#Cold Feed Rubber Extruder

[rubberpressmachine]

Cold Feed Rubber Extruder: Enhancing Efficiency in Rubber Processing

A Cold Feed Rubber Extruder is a specialized machine used in the rubber industry to shape and form rubber compounds by forcing them through a die. Unlike traditional extruders, cold feed extruders do not require pre-heating of the rubber before feeding it into the machine, which improves energy efficiency and reduces processing time. These extruders are widely used in manufacturing rubber products like profiles, tubes, hoses, and cables.

The key benefits of cold feed rubber extruders include:

Energy Savings: With no need for pre-heating, these machines consume less energy.

Improved Productivity: Faster processing times and consistent output enhance production efficiency.

Better Control: Precise control over temperature, pressure, and die design ensures high-quality rubber products.

If you're in the rubber manufacturing industry, investing in a Cold Feed Rubber Extruder can optimize your operations, reduce costs, and improve product quality. Explore top manufacturers and models to find the right extruder for your needs today.

[chinasteady24]

Cold Feed Rubber Extruder Machines: Transforming USA Manufacturing

Cold feed rubber extruder machines have become essential in modern rubber manufacturing, offering unmatched efficiency and precision. This blog post delves into the technology behind these machines, highlighting their energy-saving benefits, versatile applications, and role in sustainable production. Learn about their impact on industries like automotive, construction, and medical manufacturing while exploring future trends and innovations shaping the industry.

[microwaverubberheating]

What is Rubber Machinery?

Machinery used to manufacture various rubber products such as tires, including general rubber machinery, tire machinery and other rubber product machinery 3 categories.

Rubber machinery in general “Machinery for preparing rubber or semi-finished products, including raw material processing machinery, rubber mixing machines, extruders, calenders, curtain canvas pre-treatment devices and cutting machines.

Rubber mixing machines are divided into two types: open type and closed type.

Open rubber mixing machine: It is mainly used for hot mixing, tablet pressing, rubber breaking, plasticizing and rubber mixing. It consists of rollers, roller bearings, roller pitch adjustment device, emergency brake device, frame, machine base, transmission device, and heating and cooling system.

The working principle of the open rubber mixer is: raw rubber or rubber material is fed into the nip by friction between two rollers rotating at different speeds and subjected to strong shearing and compression to increase the degree of plasticity. This double roller open rubber mixing mill began to be used in production in 1826. Its structure is relatively simple and it is still commonly used in modern times.

Closed Rubber Mixing Machine: It is mainly used for plasticizing and mixing rubber. It has one more mixing chamber than the open mixer. After the raw rubber and compounding agent are loaded into the mixing chamber from the feed hopper, the material door is closed, the upper bolt of the pressing device is pressed down, and the two rotors of the mixing chamber mixture rotate in opposite directions at different or the same speed.

The charged rubber material is subjected to constant agitation, rolling and strong kneading between the rotors, between the rotors and the mixing chamber, which leads to oxidation and chain scission, which increases plasticity. At the same time, the rubber material is evenly dispersed and mixed due to shearing, so as to achieve the purpose of mixing the rubber.

Since the invention of the elliptical rotor enclosed rubber mixer in 1916, the enclosed rubber mixer has developed rapidly in the rubber industry. Subsequently closed rubber mixers with other types of rotors appeared. The mixing cycle of a modern closed rubber mixer is 2.5-3 minutes and the maximum capacity of the mixing chamber is 650 litres.

The extruder is used to extrude treads, inner tubes, hoses and various rubber strips, and is also used to coat cables and wire products. The most common is the screw extruder. Its working principle is: the rubber material is stirred, mixed, plasticized and compacted in the barrel by rotating the extrusion screw, and then it moves in the direction of the machine head and finally extrudes a product of a certain shape. From the mouth Depending on the needs of the product, various machines can be used for compound extrusion of a variety of rubber materials.

Screw extruders are divided into two types: hot feed and cold feed. Hot feed extruders generally feed strips that have been preheated by an open rubber mill. The rubber material fed by the cold feed extruder does not melt with heat, so the hot melt equipment can be omitted.

The calender is mainly used for pasting or rubbing curtain canvas, rubber material pressing, laminating, pressing and embossing. The main working part of the calender is the roller, and the number of rollers is usually 3 or more. When rubber material with a certain temperature and plasticity is fed into the gap of counter-rotating rollers, it is strongly squeezed and stretched under the action of friction to form the required product. The first calender was made and used in production in 1857, and it has been continually improved thereafter.

Especially since the 1950s, the development of the plastics industry has strongly promoted the improvement of high-precision and high-speed calenders. In order to obtain calendered products with a uniform thickness, new calenders are generally equipped with roll deflection compensation devices. The thickness of the calendered semi-finished product is measured with special equipment, and some calenders are also equipped with an automatic thickness adjustment system controlled by an electronic computer.

Tire Machinery

This type of machinery includes tire building machines, tire displacement machinery, tire molding vulcanizers, bladder vulcanizers, cushion belt vulcanizers, tube splicers and tube vulcanizers, as well as tire machinery, retreading machinery tires and recovered rubber production machinery. More than 60% of the world's rubber is used to make tires, so tire machinery occupies an important place in rubber machinery. Figure 2 is a flowchart of tire production.

The tire making machine is used to roll and process various components such as rubber cord, wire cord, and tread into a green tire. According to the purpose, it is divided into two categories: ordinary tire making machines and radial tire making machines.

The cords of the cords of the common tire carcass intersect at a certain angle. When forming, the cord tube is first placed in the building drum, and then wire loops are placed on both sides, and the cushioning layer and tread rubber are covered in the middle to form the shape. The green tire becomes cylindrical.

The main difference in the structure between radial tires and ordinary tires is that the cords of the cushion layer and the axis of the carcass are 90° 75° (almost orthogonal), so the diameter of the cushion layer does not it can be changed significantly after molding, so the carcass is made. After that you need to expand to the rough final shape and then attach the damping layer. Therefore, the structure of the radial tire making machine is also different from that of the ordinary tire making machine.

A molding machine completes the entire radial tire building process, which is called the one-time molding method. The carcass is made by a modified ordinary tire making machine, and then formed on the radial tire making machine, which is called the two-stage forming method.

Continuous Vulcanizing Ovens

Microwave Rubber Vulcanization

[clearblowmachine]

Production speed adjustment of blow molding machines

Reduce the speed by increasing the exhaust time and full pressure time, while reducing the overall temperature of the light box. For every 0 and 1S increase in light box temperature, the overall temperature needs to be reduced by 1%. (The shortest exhaust time is 0, 8S, below 0, 8S, the bottle skipping phenomenon will occur due to irregular exhaust). Whether the speed increases or decreases, do not go too fast. Each time Z changes more than 0, 3S. Observe the quality of the bottle and adjust the speed after the quality of the bottle is stable. Every time you adjust the speed, you must carefully observe the quality of the bottle and adjust the temperature of the light box at any time.

 Every time the blowing cycle of the bottle changes by 0 or 1S, the output of the bottle changes by about 50 per hour. The blow molding machine should adjust the blow molding speed reasonably according to the speed of the filling machine. Plastic system debugging 1) The heater of the plasticizing system must be fixed evenly, and the heater and the heated surface should be evenly and tightly attached. For mica heaters, tap lightly with a rubber mallet while tightening to ensure a tight fit, which facilitates even heating and prolongs the life of the heater. 2) The thermocouple probe must have sufficient spring preload to ensure accurate temperature measurement. 

3) The compression bolt of the die head of the oil storage cylinder cannot be fully tightened. Press it down lightly to allow room for the thermal expansion and contraction of the barrel; the axis of the barrel  injection machines manufacturers  should remain straight without bending. 4) Before heating, be sure to turn on the barrel cooling water and the die cooling water to prevent blocking and clogging of the barrel feeding part, and to prevent the oil tank seal on the gearbox and the die from premature aging. 5) A magnetic frame must be placed in the hopper to prevent iron filings from entering the screw, thereby damaging the screw and mold parts or blocking the mold channel. 6) When the cold machine starts, it is usually recommended to reduce the extrusion speed. Usually the speed is gradually increased after the tube blank is extruded from the die.

 7) Under normal circumstances, before extruding the tube blank from the mold, personnel shall not stand directly in front of and under the mold. When the tank machine takes the first 3 shots, the personnel should stay away from the mold and shoot manually. The pressure should normally not be too high (usually no more than 5 MPa). 8) The automatic injection pressure of the gas cylinder machine should not be too high. The actual time for automatic injection is usually more than 5 seconds. Too fast speeds can result in incorrect wall thickness tracking and melt fracture. 9) For machines equipped with a wall thickness control system, the wall thickness controller must be manually started and run once before starting extrusion to prevent the die from closing completely and causing damage to the part.

[shanghaideren]

Know about the rubber extrusion machinery of DeRen

Rubber extrusion machinery is a basic equipment in the rubber industry and one of the key equipments affecting product quality. It plays a very important role in the production process of tires and rubber products. The development of foreign rubber extrusion machinery has experienced plunger type rubber extrusion machinery, screw type hot feed rubber extrusion machinery, ordinary cold feed rubber extrusion machinery, main and auxiliary thread cold feed rubber extrusion machinery, cold feed exhaust rubber extrusion machinery , pin cold feeding rubber extrusion machinery, compound rubber extrusion machinery and other stages. ShangHai DeRen Rubber and Plastic, Machinery Co.,LTD. sells the best rubber extrusion machinery.

 The working principle of rubber extrusion machinery

 The function of Rubber extrusion machinery is to use heat, pressure and shear to transform solid plastic into a homogeneous melt, which is sent to the next process. The production of the melt involves mixing additives such as color masterbatches, blending resins, and regrinding. The finished melt must be homogeneous in concentration and temperature. The pressure must be large enough to extrude the viscous polymer. Now I believe you know the working principle of rubber extrusion machinery. By the way welcome to buy the best rubber extrusion machinery of DeRen.

 Application of Rubber extrusion machinery

 Rubber extrusion machinery and its auxiliary machines are one of the most widely used important equipment in the rubber industry. It is mainly used for the extrusion molding of treads, inner tubes, rubber strips, hoses, tapes and other rubber products. It has excellent characteristics such as energy saving, high output, good plasticization, and low temperature rubber mixing, which expands the application scope of rubber extrusion machinery. , become a new generation of high-efficiency rubber processing equipment. Rubber extrusion machinery equipment is widely used in the manufacture of semi-finished products such as pure rubber pipes, tire treads, rubber inner and outer layers of rubber pipes and wires and cables. As the rubber extruder manufacturer ShangHai DeRen Rubber and Plastic, Machinery Co.,LTD. has the best rubber extrusion machinery.

 Maintenance of Rubber extrusion machinery

 ①The machine head should be assembled together and installed on the rubber extrusion machinery as a whole. ②Before assembling the machine head, wipe off the grease applied during storage, carefully check the cavity surface for bumps, scratches and rust spots, perform necessary polishing, and then apply a layer of silicone oil on the surface of the runner. ③ Assemble the plates of the machine head together in sequence, apply high temperature grease to the threads of the bolts, and then screw on the bolts and flanges. ④ Place the perforated plate between the flanges of the machine head to ensure that the perforated plate is pressed without overflowing. ⑤The horizontal position of the die should be adjusted before tightening the fastening bolts of the connection flange between the machine head and the rubber extrusion machinery. The square head can be adjusted horizontally, and the round head is based on the rubber bottom surface of the stereotyped model. The bottom surface of the mold is leveled. ⑥ Tighten the connecting flange bolts, tighten the machine head fastening bolts, install the heating ring and thermocouple, and pay attention to the heating ring and the outer surface of the machine head. ⑦Install the setting sleeve and adjust it in place, check whether the center line of the main engine, the setting sleeve and the tractor are aligned. After adjustment, tighten the fixing bolts. Connect the water pipes and vacuum pipes of the setting sleeve. ⑧Turn on the heating power, and evenly heat the machine head and machine body. At the same time, open the cooling water at the bottom of the hopper and the gear box and the water inlet valve of the exhaust vacuum pump. When heating and heating, the temperature of each section is first adjusted to 140 ° C, and when the temperature rises to 140 ° C, the temperature is kept for 30-40 minutes, and then the temperature is raised to the normal production temperature.

 Notice for Rubber extrusion machinery

 First, the plastic used for extrusion. The raw materials should meet the required drying requirements, and further drying is required if necessary. The raw materials are sieved to remove agglomerates and mechanical impurities. Check whether the water, electricity and gas systems in the equipment are normal, ensure that the water and gas paths are unobstructed and not leaking, whether the electrical system is normal, whether the heating system, temperature control, and various instruments work reliably; Check whether the equipment is running normally; start the vacuum pump of the setting table and observe whether the work is normal; add oil to the lubricating parts of various equipment. If a fault is found, remove it in time. Mounting head and setting sleeve. According to the variety and size of the product, select the head specification.

 The recommendation of the rubber extruder manufacturer

 Please pay attention to ShangHai DeRen Rubber and Plastic, Machinery Co.,LTD. and update your knowledge every day. After reading the above, everyone must have a certain understanding of the working principle of rubber extrusion machinery, rubber extruder manufacturer and best rubber extrusion machinery. ShangHai DeRen Rubber and Plastic, Machinery Co.,LTD. provides products with favorable prices and guaranteed quality, using the latest manufacturing technology to create personalized products according to customer requirements.

[slachhydratecs]

Rubber Extruder Manufacturer in New Delhi

Slach Hydratecs is the top rubber extruder manufacturers in India offering a vast range of hot feed and cold feed rubber extruders in India.This Rubber Extruder guarantees varied operations like better plastication result, higher extrusion capability and lower temperature of the outgoing rubber.

For More Info.

Mail Us : info@slachhydratecs.in

Call Us : +91–97171 35168

Visit Us : https://slachhydratecs.in/

[htoilmachine]

Process of rapeseed oil pressing

1 Pretreatment of rapeseed Pretreatment includes crushing, steaming and peeling. The purpose of rapeseed peeling is to remove the main fiber and pigment body, otherwise it will reduce the feeding value of the cake. On the other hand, the leaching process is conducive to solvent penetration (the leaching can improve the porosity of the blank). In theory, peeling (that is, removing 15 percent of the material) will increase leaching equipment capacity by 15 percent. Remove these black skins before leaching and the oil is lighter and requires less decolorization. The dry peeling of rapeseed can adopt different technologies, such as pneumatic impact, cracking between rolls or deformation cracking, and the deformation cracking effect is the best and oil loss rate is the lowest. 2 Use rapeseed to make oil Rapeseed is first rolled to destroy the seed layer and rupture the oil cells. The steam stir-fry can rupture the remaining intact cells, improve the oil bead aggregation, increase the fluidity, and passivate the enzyme, especially the mustard enzyme. Billet in steaming in the frying pan, steaming Fried within 77 ~ 100 °C 15 ~ 20 min (depending on the rapeseed varieties). In most cases, the blanks after rolling and steaming are pre-pressed with a press machine to reduce the oil content from 42% to 16% ~ 20%. This prepress process also compresses the fine cake into a large sheet. The cake was leached with hexane solvent to extract most of the remaining oil. Leaching pulp finally in steaming offline (DT), steam spray treatment of 30 min (temperature is 100 ~ 130 °C), with removal of hexane and improve the quality of meal nutrition (by removing volatile mustard glucoside). Protein denaturation may occur during the initial stage of steaming and dissolving. It is an effective method to passivate the mustard enzyme in rapeseed and rolled stock by microwave. Myrosinase passivation depends on the initial feed moisture content (ideal moisture content is 10%). The drawback of microwave treatment is that the sulfur content in oil increases, which is caused by the long processing time. Many rapeseed processors add an extruder after prepress and before leaching. This kind of extruder is a kind of auxiliary equipment, its benefit is enough to make the cost economical. The latest design is to combine the prepress and extrusion units into one device, which has the advantage that no additional power is required. 3 Cake processing technology Rapeseed meal is a high quality protein source and can be used as animal feed instead of meal. Scientists in Scandinavia have developed a new method for making high-protein rapeseed meal. The key is deliberate heat treatment. In order to reduce the residual solubility in the meal as far as possible, only when the water content of rapeseed is less than 5%, can the best dissolute effect be obtained. Foreign scientists have investigated and studied the production of edible protein concentrate and protein isolate from rapeseed, but they have not put into industrial production. Danish scientists have developed a water-enzymatic process for preparing rapeseed oil. The pretreatment includes a rolling process and a heat treatment process to passivate myrosinase and other enzymes. The meal -- a mixture of rapeseed powder and molasses -- has been used to feed animals with a digestibility of 77.2%, a price of 92.7, and a net protein utilization rate of 71.5%. 4 Oil processing Rapeseed oil is refined by traditional chemical neutralization. A newly designed method of total degumming has been adopted. With the total degumming process, the phospholipid metal complexes use a strong acid to decompose insoluble metal salts and phospholipids (acid type). The latter is partially neutralized so that it is converted into a hydrated compound which can then be removed from the oil. After a certain contact time, add the alkali solution and mix into the acid oil emulsion to prevent the formation of fatty acid salts. This is especially important in terms of yield. Then, the oil was degummed by the first centrifuge, so that the gel phase with the lowest oil content and the oil still containing the residual glue were obtained. Then, the oil passes through the second centrifuge to get the gel-free oil and a type of oil-rich gel phase, which is recirculated.    A new method of separation impurities by 350 centrifugal filter is developed in Xi 'an filter qingbao filter plant. The method uses low density particles and centrifugal force. These particles form an inner layer of suspended solids through which the liquid must pass. The filtration accuracy of these particles can also be changed according to the characteristics of different oils. This adsorption is counter-current, in the operation process, the used particles can be replaced. The advantage of this method is that when oil is extracted, it is filtered through coarse filtration and water washing and then directly poured into the centrifuge. A small amount of dissolved phospholipids or emulsified water can be isolated from a large amount of oil, resulting in a clean oil. This centrifugal force exerts a force of several kilograms on the particles and the emulsion water. This method can be used to separate sulfur or phosphorus in rapeseed oil (which passivates nickel catalysts) and to separate colored ingredients or substances that affect smell. At present, there are mainly three ways to develop and utilize rapeseed resources at home and abroad. Second, detoxification of the cake; Third, rapeseed dehulling oil, deep processing. In order to improve the utilization quality of rapeseed meal, "double low" (i.e. low erucic acid, low glucoside) quality rapeseed was successfully cultivated and popularized in China. In order to remove the content of thioside in rapeseed meal, various detoxification methods were proposed. Such as heating inactivate and detoxify the thiosidase, enzymatic hydrolysis, distillation, filtration detoxification, water leaching of thiosidase detoxification, microbial fermentation detoxification, and so on. However, these detoxification methods can only remove the sulfur glycosides and cannot solve the harm of other harmful substances to livestock. The dehulling technology of rapeseed (also called skin) to produce oil has created certain conditions for the comprehensive development and utilization of rapeseed. The technological route of oil production is: drying - cleaning - hulling (removing the shell) - granulation - leaching. Compared with the traditional Chinese process of drying - cleaning - rolling - embryo - prepressing - leaching - oil production, the process of decanting oil production omitted the process of steaming and prepressing, which can avoid excessive protein denaturation caused by high temperature treatment in the process of steaming and prepressing, so that the water-soluble protein in the cake can be effectively preserved. At the same time, by removing the shell, the content of melanin, crude fiber, sinapine, tannin and other polyphenols was reduced, the wool oil was clear and transparent, and the quality of the cake was improved, providing quality raw materials for further processing. Utilization and comprehensive utilization of rapeseed Rapeseed oil from seeds is good cooking oil. Non-erucic rapeseed oil is used to make margarine and as raw vegetable oil (salad oil), shortening and flavoring oils. The main characteristic of rapeseed oil, which is composed of various fatty acids, is high in erucic acid (generally 40-55%) compared with other edible vegetable oils. Erucic acid is the long chain fatty acid of 22 carbon. By quality improved, erucic acid rapeseed oil of oleic acid and linoleic acid content increased significantly, linoleic acid is in the fat does not have, only rely on the supply of vegetable oil, easy to human digestion and absorption, and reduce serum cholesterol in the human body and glycerin three esters, softening blood vessels and prevent the formation of thrombus, have to human body fat metabolism plays a particularly important role. Rapeseed oil with high erucic acid (erucic acid content is 55-60%) is an important industrial raw material and used as lubricating oil in the casting steel industry. Generally, rapeseed oil is widely used in machinery, rubber, chemical industry, plastics, paint, textile, soap making and medicine. The protein content of rapeseed cake after oil extraction is up to 36-38%,and its nutritive value is close to that of soybean cake, so it is a good concentrate.   Characteristics of rapeseed oil peeling and cold pressing Its features are as follows High peeling rate. The rate of one peeling is over 98% to 99% Good peeling effect. After peeling, the proportion of half kernel and whole kernel is up to 80%, and the powder degree is less than 3% The preprocessing is simple. Before peeling, rapeseed does not need to be classified. Rapeseed water content of about 8% can achieve the ideal peeling effect. Post-processing is simple. After peeling, due to high peeling rate and low powder degree, there is almost no whole seed. It only needs to separate the two materials of kernel and skin, which is simple and easy to operate, and the necessary unpeeled and whole seed recovery and re-removal process can be omitted. The percentage of kernels after separation was less than 1%. Read the full article

[pushingmorebuttons]

how we made custom rubber extrusions for clients

Custom rubber extrusions are made to be small size flexible strips or large size straight bars/profiles,often made by EPDM,silicone rubber etc, the finished products series are

weatherstrip seals for vehicle,door and window(sunlight,rainstorm, cold,wind,ozone,UV etc)

edge trims for guard protection or rough parts decoration(e.g.sheet metal)

sponge/foam u channel rubber seal extrusions for anti impact/vibration/collision/hard-wearing

industrial use rubber tubing,rubber strip/sheet,extruded large profiles

custom rubber extrusions manucturing workflow chart

1.Raw material preparation–compounding

Mix all raw materials to a certain proportion except ultra accelerator and vulcanizator,for the first stage mixing:banbury internal mixing. Most of the rubber extrusions requires two stage mixing/plastication:

banbury internal mixing

open mixing

2.Banbury internal mixing

Mix uniformly the crude rubber with the compounding ingredients e.g. vulcanizing agent,oil-softener,fortifier etc,and stash it for 8 hours or so,to make it

Recover the fatigue

release mechanical stress

Reduce shrinkage

Compounding diffusing uniformly

Bound rubber reinforcement between carbon black and rubber with cross-linking matrix structure

first stage rubber mixing machine–banbury mix machine

Notes:

One of the ingredients Kerosene is to change the plasticity and flexibility to be more machinable;

The largest 3 synthetic rubber producing country are: USA/Japan/Korea,especially for EPDM rubber;

Rubber straining machine can effectively wipe off the impurities of the compounding rubber

EPDM rubber straining machine to wipe off impurities

Open Mixing

Compounding with accelerant,prepare the material to be next process-calendaring molding

second stage open mixing-epdm rubber mixer machine

Extruding

The exhaust type pin cold feed extruder is the most popular extruding machine,or thread cold feed extruder is another option,for general custom rubber extrusions. Extruding Die design moulds to determine the cross section shapes,which makes extruded rubber items to be a continuous bar with constant lateral section shape.

extrusion die moulds and its cross section shapes

Vulcanization

Closely followed by vulcanization(or sulfidation),via a series of curing equipment—micro wave vulcanister,hot air culcanister,hauling machine and cooling equipment.

rubber extrusions manufacturing vulcanization equipment

rubber extrusions assembly line

Packaging (cutting or coiling)

After cooling then make dry,the rubber extrusions item can be cut to be a given length or packed in a roll. Small size extruded rubber items is flexible,we often call it “rubber strips”(including small diameter rubber tubing),it can be curled in a roll,then every 200~300meters per carton;

small size rubber extrusions-flexible rubber strip packed in rolls

Large size extruded rubber items are not easy to bend,it is more like straight bars,we often call them “rubber profiles”,rubber extrusions profiles are usually cut into centain length bars,such as anti-collision rubber profiles;

large size rubber extrusions-straight bar profiles cut into certain length

7.Or deep processing as per clients’ special requirement below:

Hole punching

Butt jointing

Angle Adjancent

Flocking/Pile coating

Adhesive Backing

rubber extrusions flocking equipment-pile coating machine

angle acjacent moulds for extruded rubber seals

8.Required Properties for Automotive rubber extrusions

Working conditions of automotive rubber seals are required strictly conditional especially for weathering aspect,the service life of the finished product are up to the performance index of rubber extrusion items. Important parameters of automotive rubber extrusions:

Temperature range: typical value: -35℃ to 70℃

Hardness

Tensile strength: typical value >=7Mpa

Enlongation at break   Typical value 250~350

Compression set(compression load)

Anti-ozone aging

Atmospheric aging

Resistant to paint(coating properties)

Low-temperature properties (low-temp elasticity)    typical value:keep resilient at -35℃

Installation performance(insert/pull out force)

Flocking resistance

Cohesiveness

Extrusion force for edge trims

Brittleness temperature    typical value -35℃

The above properties and its typical value applies to custom rubber extrusions for common projects of industrial use rubber extrusions, such as u channel rubber edge trims,epdm rubber tubing,house door window rubber strip seals,etc

[thedunwells]

how we made custom rubber extrusions for clients

Custom rubber extrusions are made to be small size flexible strips or large size straight bars/profiles,often made by EPDM,silicone rubber etc, the finished products series are

weatherstrip seals for vehicle,door and window(sunlight,rainstorm, cold,wind,ozone,UV etc)

edge trims for guard protection or rough parts decoration(e.g.sheet metal)

sponge/foam rubber edging for sheet metal extrusions for anti impact/vibration/collision/hard-wearing

industrial use rubber tubing,rubber strip/sheet,extruded large profiles

custom rubber extrusions manucturing workflow chart

1.Raw material preparation–compounding

Mix all raw materials to a certain proportion except ultra accelerator and vulcanizator,for the first stage mixing:banbury internal mixing. Most of the rubber extrusions requires two stage mixing/plastication:

banbury internal mixing

open mixing

2.Banbury internal mixing

Mix uniformly the crude rubber with the compounding ingredients e.g. vulcanizing agent,oil-softener,fortifier etc,and stash it for 8 hours or so,to make it

Recover the fatigue

release mechanical stress

Reduce shrinkage

Compounding diffusing uniformly

Bound rubber reinforcement between carbon black and rubber with cross-linking matrix structure

first stage rubber mixing machine–banbury mix machine

Notes:

One of the ingredients Kerosene is to change the plasticity and flexibility to be more machinable;

The largest 3 synthetic rubber producing country are: USA/Japan/Korea,especially for EPDM rubber;

Rubber straining machine can effectively wipe off the impurities of the compounding rubber

EPDM rubber straining machine to wipe off impurities

Open Mixing

Compounding with accelerant,prepare the material to be next process-calendaring molding

second stage open mixing-epdm rubber mixer machine

Extruding

The exhaust type pin cold feed extruder is the most popular extruding machine,or thread cold feed extruder is another option,for general custom rubber extrusions. Extruding Die design moulds to determine the cross section shapes,which makes extruded rubber items to be a continuous bar with constant lateral section shape.

extrusion die moulds and its cross section shapes

Vulcanization

Closely followed by vulcanization(or sulfidation),via a series of curing equipment—micro wave vulcanister,hot air culcanister,hauling machine and cooling equipment.

rubber extrusions manufacturing vulcanization equipment

rubber extrusions assembly line

Packaging (cutting or coiling)

After cooling then make dry,the rubber extrusions item can be cut to be a given length or packed in a roll. Small size extruded rubber items is flexible,we often call it “rubber strips”(including small diameter rubber tubing),it can be curled in a roll,then every 200~300meters per carton;

small size rubber extrusions-flexible rubber strip packed in rolls

Large size extruded rubber items are not easy to bend,it is more like straight bars,we often call them “rubber profiles”,rubber extrusions profiles are usually cut into centain length bars,such as anti-collision rubber profiles;

large size rubber extrusions-straight bar profiles cut into certain length

7.Or deep processing as per clients’ special requirement below:

Hole punching

Butt jointing

Angle Adjancent

Flocking/Pile coating

Adhesive Backing

rubber extrusions flocking equipment-pile coating machine

angle acjacent moulds for extruded rubber seals

8.Required Properties for Automotive rubber extrusions

Working conditions of automotive rubber seals are required strictly conditional especially for weathering aspect,the service life of the finished product are up to the performance index of rubber extrusion items. Important parameters of automotive rubber extrusions:

Temperature range: typical value: -35℃ to 70℃

Hardness

Tensile strength: typical value >=7Mpa

Enlongation at break   Typical value 250~350

Compression set(compression load)

Anti-ozone aging

Atmospheric aging

Resistant to paint(coating properties)

Low-temperature properties (low-temp elasticity)    typical value:keep resilient at -35℃

Installation performance(insert/pull out force)

Flocking resistance

Cohesiveness

Extrusion force for edge trims

Brittleness temperature    typical value -35℃

The above properties and its typical value applies to custom rubber extrusions for common projects of industrial use rubber extrusions, such as u channel rubber edge trims,epdm rubber tubing,house door window rubber strip seals,etc

[thefairybones-blog1]

how we made custom rubber extrusions for clients

Custom rubber extrusions are made to be small size flexible strips or large size straight bars/profiles,often made by EPDM,silicone rubber etc, the finished products series are

weatherstrip seals for vehicle,door and window(sunlight,rainstorm, cold,wind,ozone,UV etc)

edge trims for guard protection or rough parts decoration(e.g.sheet metal)

sponge/foam silicone rubber extrusions extrusions for anti impact/vibration/collision/hard-wearing

industrial use rubber tubing,rubber strip/sheet,extruded large profiles

custom rubber extrusions manucturing workflow chart

1.Raw material preparation–compounding

Mix all raw materials to a certain proportion except ultra accelerator and vulcanizator,for the first stage mixing:banbury internal mixing. Most of the rubber extrusions requires two stage mixing/plastication:

banbury internal mixing

open mixing

2.Banbury internal mixing

Mix uniformly the crude rubber with the compounding ingredients e.g. vulcanizing agent,oil-softener,fortifier etc,and stash it for 8 hours or so,to make it

Recover the fatigue

release mechanical stress

Reduce shrinkage

Compounding diffusing uniformly

Bound rubber reinforcement between carbon black and rubber with cross-linking matrix structure

first stage rubber mixing machine–banbury mix machine

Notes:

One of the ingredients Kerosene is to change the plasticity and flexibility to be more machinable;

The largest 3 synthetic rubber producing country are: USA/Japan/Korea,especially for EPDM rubber;

Rubber straining machine can effectively wipe off the impurities of the compounding rubber

EPDM rubber straining machine to wipe off impurities

Open Mixing

Compounding with accelerant,prepare the material to be next process-calendaring molding

second stage open mixing-epdm rubber mixer machine

Extruding

The exhaust type pin cold feed extruder is the most popular extruding machine,or thread cold feed extruder is another option,for general custom rubber extrusions. Extruding Die design moulds to determine the cross section shapes,which makes extruded rubber items to be a continuous bar with constant lateral section shape.

extrusion die moulds and its cross section shapes

Vulcanization

Closely followed by vulcanization(or sulfidation),via a series of curing equipment—micro wave vulcanister,hot air culcanister,hauling machine and cooling equipment.

rubber extrusions manufacturing vulcanization equipment

rubber extrusions assembly line

Packaging (cutting or coiling)

After cooling then make dry,the rubber extrusions item can be cut to be a given length or packed in a roll. Small size extruded rubber items is flexible,we often call it “rubber strips”(including small diameter rubber tubing),it can be curled in a roll,then every 200~300meters per carton;

small size rubber extrusions-flexible rubber strip packed in rolls

Large size extruded rubber items are not easy to bend,it is more like straight bars,we often call them “rubber profiles”,rubber extrusions profiles are usually cut into centain length bars,such as anti-collision rubber profiles;

large size rubber extrusions-straight bar profiles cut into certain length

7.Or deep processing as per clients’ special requirement below:

Hole punching

Butt jointing

Angle Adjancent

Flocking/Pile coating

Adhesive Backing

rubber extrusions flocking equipment-pile coating machine

angle acjacent moulds for extruded rubber seals

8.Required Properties for Automotive rubber extrusions

Working conditions of automotive rubber seals are required strictly conditional especially for weathering aspect,the service life of the finished product are up to the performance index of rubber extrusion items. Important parameters of automotive rubber extrusions:

Temperature range: typical value: -35℃ to 70℃

Hardness

Tensile strength: typical value >=7Mpa

Enlongation at break   Typical value 250~350

Compression set(compression load)

Anti-ozone aging

Atmospheric aging

Resistant to paint(coating properties)

Low-temperature properties (low-temp elasticity)    typical value:keep resilient at -35℃

Installation performance(insert/pull out force)

Flocking resistance

Cohesiveness

Extrusion force for edge trims

Brittleness temperature    typical value -35℃

The above properties and its typical value applies to custom rubber extrusions for common projects of industrial use rubber extrusions, such as u channel rubber edge trims,epdm rubber tubing,house door window rubber strip seals,etc

[shanghaideren]

Know about the rubber extrusion machinery of DeRen

The overview of the best rubber extrusion machinery of DeRen

 Rubber extrusion machinery is a basic equipment in the rubber industry and one of the key equipments affecting product quality. It plays a very important role in the production process of tires and rubber products. The development of foreign rubber extrusion machinery has experienced plunger type rubber extrusion machinery, screw type hot feed rubber extrusion machinery, ordinary cold feed rubber extrusion machinery, main and auxiliary thread cold feed rubber extrusion machinery, cold feed exhaust rubber extrusion machinery , pin cold feeding rubber extrusion machinery, compound rubber extrusion machinery and other stages. ShangHai DeRen Rubber and Plastic, Machinery Co.,LTD. sells the best rubber extrusion machinery.

 The working principle of rubber extrusion machinery

 The function of Rubber extrusion machinery is to use heat, pressure and shear to transform solid plastic into a homogeneous melt, which is sent to the next process. The production of the melt involves mixing additives such as color masterbatches, blending resins, and regrinding. The finished melt must be homogeneous in concentration and temperature. The pressure must be large enough to extrude the viscous polymer. Now I believe you know the working principle of rubber extrusion machinery. By the way welcome to buy the best rubber extrusion machinery of DeRen.

 Application of Rubber extrusion machinery

 Rubber extrusion machinery and its auxiliary machines are one of the most widely used important equipment in the rubber industry. It is mainly used for the extrusion molding of treads, inner tubes, rubber strips, hoses, tapes and other rubber products. It has excellent characteristics such as energy saving, high output, good plasticization, and low temperature rubber mixing, which expands the application scope of rubber extrusion machinery. , become a new generation of high-efficiency rubber processing equipment. Rubber extrusion machinery equipment is widely used in the manufacture of semi-finished products such as pure rubber pipes, tire treads, rubber inner and outer layers of rubber pipes and wires and cables. As the rubber extruder manufacturer ShangHai DeRen Rubber and Plastic, Machinery Co.,LTD. has the best rubber extrusion machinery.

 Maintenance of Rubber extrusion machinery

 ①The machine head should be assembled together and installed on the rubber extrusion machinery as a whole. ②Before assembling the machine head, wipe off the grease applied during storage, carefully check the cavity surface for bumps, scratches and rust spots, perform necessary polishing, and then apply a layer of silicone oil on the surface of the runner. ③ Assemble the plates of the machine head together in sequence, apply high temperature grease to the threads of the bolts, and then screw on the bolts and flanges. ④ Place the perforated plate between the flanges of the machine head to ensure that the perforated plate is pressed without overflowing. ⑤The horizontal position of the die should be adjusted before tightening the fastening bolts of the connection flange between the machine head and the rubber extrusion machinery. The square head can be adjusted horizontally, and the round head is based on the rubber bottom surface of the stereotyped model. The bottom surface of the mold is leveled. ⑥ Tighten the connecting flange bolts, tighten the machine head fastening bolts, install the heating ring and thermocouple, and pay attention to the heating ring and the outer surface of the machine head. ⑦Install the setting sleeve and adjust it in place, check whether the center line of the main engine, the setting sleeve and the tractor are aligned. After adjustment, tighten the fixing bolts. Connect the water pipes and vacuum pipes of the setting sleeve. ⑧Turn on the heating power, and evenly heat the machine head and machine body. At the same time, open the cooling water at the bottom of the hopper and the gear box and the water inlet valve of the exhaust vacuum pump. When heating and heating, the temperature of each section is first adjusted to 140 ° C, and when the temperature rises to 140 ° C, the temperature is kept for 30-40 minutes, and then the temperature is raised to the normal production temperature.

 Notice for Rubber extrusion machinery

 First, the plastic used for extrusion. The raw materials should meet the required drying requirements, and further drying is required if necessary. The raw materials are sieved to remove agglomerates and mechanical impurities. Check whether the water, electricity and gas systems in the equipment are normal, ensure that the water and gas paths are unobstructed and not leaking, whether the electrical system is normal, whether the heating system, temperature control, and various instruments work reliably; Check whether the equipment is running normally; start the vacuum pump of the setting table and observe whether the work is normal; add oil to the lubricating parts of various equipment. If a fault is found, remove it in time. Mounting head and setting sleeve. According to the variety and size of the product, select the head specification.

 The recommendation of the rubber extruder manufacturer

 Please pay attention to ShangHai DeRen Rubber and Plastic, Machinery Co.,LTD. and update your knowledge every day. After reading the above, everyone must have a certain understanding of the working principle of rubber extrusion machinery, rubber extruder manufacturer and best rubber extrusion machinery. ShangHai DeRen Rubber and Plastic, Machinery Co.,LTD. provides products with favorable prices and guaranteed quality, using the latest manufacturing technology to create personalized products according to customer requirements.

[slachhydratecs]

Top Rubber Extruder Manufacturer in India

Prominent & Leading Manufacturer from Gurgaon, we offer Slach Hydratecs Rubber Hot / Cold Feed Extruder.This products is made using the top quality raw material and advanced technique. 

For More Info.Mail Us : info@slachhydratecs.in

Call Us : +91–97171 35168

Visit Us : https://slachhydratecs.in/

[outlettomsstoreonline]

how we made custom rubber extrusions for clients

Custom rubber extrusions are made to be small size flexible strips or large size straight bars/profiles,often made by EPDM,silicone rubber etc, the finished products series are

weatherstrip seals for vehicle,door and window(sunlight,rainstorm, cold,wind,ozone,UV etc)

edge trims for guard protection or rough parts decoration(e.g.sheet metal)

sponge/foam rubber extrusions for anti impact/vibration/collision/hard-wearing

industrial use rubber tubing,rubber extrusions manufacturers  strip/sheet,extruded large profiles

custom rubber extrusions manucturing workflow chart

1.Raw material preparation–compounding

Mix all raw materials to a certain proportion except ultra accelerator and vulcanizator,for the first stage mixing:banbury internal mixing. Most of the rubber extrusions requires two stage mixing/plastication:

banbury internal mixing

open mixing

2.Banbury internal mixing

Mix uniformly the crude rubber with the compounding ingredients e.g. vulcanizing agent,oil-softener,fortifier etc,and stash it for 8 hours or so,to make it

Recover the fatigue

release mechanical stress

Reduce shrinkage

Compounding diffusing uniformly

Bound rubber reinforcement between carbon black and rubber with cross-linking matrix structure

first stage rubber mixing machine–banbury mix machine

Notes:

One of the ingredients Kerosene is to change the plasticity and flexibility to be more machinable;

The largest 3 synthetic rubber producing country are: USA/Japan/Korea,especially for EPDM rubber;

Rubber straining machine can effectively wipe off the impurities of the compounding rubber

EPDM rubber straining machine to wipe off impurities

Open Mixing

Compounding with accelerant,prepare the material to be next process-calendaring molding

second stage open mixing-epdm rubber mixer machine

Extruding

The exhaust type pin cold feed extruder is the most popular extruding machine,or thread cold feed extruder is another option,for general custom rubber extrusions. Extruding Die design moulds to determine the cross section shapes,which makes extruded rubber items to be a continuous bar with constant lateral section shape.

extrusion die moulds and its cross section shapes

Vulcanization

Closely followed by vulcanization(or sulfidation),via a series of curing equipment—micro wave vulcanister,hot air culcanister,hauling machine and cooling equipment.

rubber extrusions manufacturing vulcanization equipment

rubber extrusions assembly line

Packaging (cutting or coiling)

After cooling then make dry,the rubber extrusions item can be cut to be a given length or packed in a roll. Small size extruded rubber items is flexible,we often call it “rubber strips”(including small diameter rubber tubing),it can be curled in a roll,then every 200~300meters per carton;

small size rubber extrusions-flexible rubber strip packed in rolls

Large size extruded rubber items are not easy to bend,it is more like straight bars,we often call them “rubber profiles”,rubber extrusions profiles are usually cut into centain length bars,such as anti-collision rubber profiles;

large size rubber extrusions-straight bar profiles cut into certain length

7.Or deep processing as per clients’ special requirement below:

Hole punching

Butt jointing

Angle Adjancent

Flocking/Pile coating

Adhesive Backing

rubber extrusions flocking equipment-pile coating machine

angle acjacent moulds for extruded rubber seals

8.Required Properties for Automotive rubber extrusions

Working conditions of automotive rubber seals are required strictly conditional especially for weathering aspect,the service life of the finished product are up to the performance index of rubber extrusion items. Important parameters of automotive rubber extrusions:

Temperature range: typical value: -35℃ to 70℃

Hardness

Tensile strength: typical value >=7Mpa

Enlongation at break   Typical value 250~350

Compression set(compression load)

Anti-ozone aging

Atmospheric aging

Resistant to paint(coating properties)

Low-temperature properties (low-temp elasticity)    typical value:keep resilient at -35℃

Installation performance(insert/pull out force)

Flocking resistance

Cohesiveness

Extrusion force for edge trims

Brittleness temperature    typical value -35℃

The above properties and its typical value applies to custom rubber extrusions for common projects of industrial use rubber extrusions, such as u channel rubber edge trims,epdm rubber tubing,house door window rubber strip seals,etc

[top-of-stairs-baby-gate]

how we made custom rubber extrusions for clients

Custom rubber extrusions are made to be small size flexible strips or large size straight bars/profiles,often made by EPDM,silicone rubber etc, the finished products series are

weatherstrip seals for vehicle,door and window(sunlight,rainstorm, cold,wind,ozone,UV etc)

edge trims for guard protection or rough parts decoration(e.g.sheet metal)

sponge/foam rubber extrusions for anti impact/vibration/collision/hard-wearing

industrial use rubber tubing,extruded rubber gasket  strip/sheet,extruded large profiles

custom rubber extrusions manucturing workflow chart

1.Raw material preparation–compounding

Mix all raw materials to a certain proportion except ultra accelerator and vulcanizator,for the first stage mixing:banbury internal mixing. Most of the rubber extrusions requires two stage mixing/plastication:

banbury internal mixing

open mixing

2.Banbury internal mixing

Mix uniformly the crude rubber with the compounding ingredients e.g. vulcanizing agent,oil-softener,fortifier etc,and stash it for 8 hours or so,to make it

Recover the fatigue

release mechanical stress

Reduce shrinkage

Compounding diffusing uniformly

Bound rubber reinforcement between carbon black and rubber with cross-linking matrix structure

first stage rubber mixing machine–banbury mix machine

Notes:

One of the ingredients Kerosene is to change the plasticity and flexibility to be more machinable;

The largest 3 synthetic rubber producing country are: USA/Japan/Korea,especially for EPDM rubber;

Rubber straining machine can effectively wipe off the impurities of the compounding rubber

EPDM rubber straining machine to wipe off impurities

Open Mixing

Compounding with accelerant,prepare the material to be next process-calendaring molding

second stage open mixing-epdm rubber mixer machine

Extruding

The exhaust type pin cold feed extruder is the most popular extruding machine,or thread cold feed extruder is another option,for general custom rubber extrusions. Extruding Die design moulds to determine the cross section shapes,which makes extruded rubber items to be a continuous bar with constant lateral section shape.

extrusion die moulds and its cross section shapes

Vulcanization

Closely followed by vulcanization(or sulfidation),via a series of curing equipment—micro wave vulcanister,hot air culcanister,hauling machine and cooling equipment.

rubber extrusions manufacturing vulcanization equipment

rubber extrusions assembly line

Packaging (cutting or coiling)

After cooling then make dry,the rubber extrusions item can be cut to be a given length or packed in a roll. Small size extruded rubber items is flexible,we often call it “rubber strips”(including small diameter rubber tubing),it can be curled in a roll,then every 200~300meters per carton;

small size rubber extrusions-flexible rubber strip packed in rolls

Large size extruded rubber items are not easy to bend,it is more like straight bars,we often call them “rubber profiles”,rubber extrusions profiles are usually cut into centain length bars,such as anti-collision rubber profiles;

large size rubber extrusions-straight bar profiles cut into certain length

7.Or deep processing as per clients’ special requirement below:

Hole punching

Butt jointing

Angle Adjancent

Flocking/Pile coating

Adhesive Backing

rubber extrusions flocking equipment-pile coating machine

angle acjacent moulds for extruded rubber seals

8.Required Properties for Automotive rubber extrusions

Working conditions of automotive rubber seals are required strictly conditional especially for weathering aspect,the service life of the finished product are up to the performance index of rubber extrusion items. Important parameters of automotive rubber extrusions:

Temperature range: typical value: -35℃ to 70℃

Hardness

Tensile strength: typical value >=7Mpa

Enlongation at break   Typical value 250~350

Compression set(compression load)

Anti-ozone aging

Atmospheric aging

Resistant to paint(coating properties)

Low-temperature properties (low-temp elasticity)    typical value:keep resilient at -35℃

Installation performance(insert/pull out force)

Flocking resistance

Cohesiveness

Extrusion force for edge trims

Brittleness temperature    typical value -35℃

The above properties and its typical value applies to custom rubber extrusions for common projects of industrial use rubber extrusions, such as u channel rubber edge trims,epdm rubber tubing,house door window rubber strip seals,etc

[bharajmachineries-blog]

Cold feed Rubber Extruder

Bharaj Machineries Pvt Ltd manufactures and exports all kinds of rubber processing machineriy like Cold Feed Rubber Extruders and Rubber Extruders.  Get complete information about Cold feed Rubber Extruder and Rubber Extruders from http://www.bharajmachineries.com

[dixonviz-blog]

Rubber mixing mill

http://www.oulimachine.com - Qingdao Ouli machine CO., LTD was located in west coast of Qingdao    city Shandong province China. Our company is specialized in Rubber machinery production enterprise with R &D, design, production, sales and service.        OULI main products:    Rubber mixing equipment: kneader, bucket,mixing mill, bale cutter    Rubber calendaring machine: 2 roll ,3 roll, 4 roll calender, calendaring line    Rubber vulcanizing machine: Four-column press, Frame press, E-type press,tire and tube press , Belt vulcanizing press .    Rubber extruding equipment: Hot feed extruder,cold feed extruder    Automatic and semi-automatic waste tire recycling equipment    Reclaimed rubber production line        The products have been exported to many countries and districts around the world, such as America, France, Canada, Australia, Southeast Asia, and the Middle East. By the advanced quality and    service, our products have gained the praise of domesticand foreign customers.