#extrusion screen changer

[xinhulian]

What is Food-Grade rPET and Why Is It Important?

Definition and Uses

Food-grade rPET (recycled polyethylene terephthalate) refers to recycled PET that meets rigorous safety standards for contact with food products. It is produced from post-consumer plastic waste, recovering and repurposing bottles and containers, and offers a sustainable alternative for manufacturers and packaging companies. Typically, food-grade rPET is utilized in a wide range of applications including food and beverage packaging, containers, and various other forms of consumer products.

Importance in Reducing Environmental Impact

The use of food-grade rPET sheets significantly contributes to the reduction of environmental impact. By recycling PET, fewer raw materials, such as virgin plastic, are required, leading to decreased energy consumption and minimized waste. Furthermore, implementing rPET into the production cycle helps in reducing carbon footprints, fostering a circular economy that promotes sustainability. As companies shift toward eco-friendly packaging solutions, rPET serves as a pivotal aspect of their transition towards greener alternatives.

How Does Decontamination Work in the Production of rPET Sheets?

Vacuum Decontamination Methods

Decontamination is crucial in ensuring that food-grade rPET sheets are free from contaminants. One effective approach involves vacuum decontamination methods, which remove impurities through a series of temperature and pressure adjustments. By applying heat under vacuum conditions, volatile organic compounds and other contaminants are effectively vaporized, ensuring the integrity of the recycled material. This not only enhances the quality but also ensures compliance with food safety regulations.

Solid-State Polycondensation (SSP) Procedures

In addition to vacuum methods, solid-state polycondensation (SSP) is utilized to further purify rPET. This process involves heating the recycled flakes under specific conditions that promote the removal of remaining contaminants, ultimately increasing the intrinsic viscosity of the material. The result is a higher-quality food-grade rPET that meets or exceeds regulations set forth by food safety authorities. Incorporating both vacuum decontamination and SSP in the production process significantly enhances the purity of the final product.

The Role of Extrusion in Ensuring Purity

Single-Screw Extruder Functions

Extrusion plays an essential role in transforming decontaminated rPET flakes into usable sheets. Single-screw extruders effectively mix and melt the material, allowing for a thorough integration of additives that further enhance the performance of food-grade rPET sheets. This process ensures a homogenous product devoid of any impurities, achieving the necessary specs for food-contact applications.

Melting and Conveying Process at High Temperatures

During the melting and conveying stages, temperatures must be optimized to facilitate the removal of any residual contaminants. This high-temperature processing not only ensures that any remaining impurities are eradicated but also assists in achieving the desired viscosity and flow characteristics for the food-grade rPET sheets. The high temperatures combined with efficient conveying infrastructure lead to the production of a clean and reliable end product.

Advanced Filtration Techniques for Food-Grade rPET

Types of Filtration Used

To achieve the desired purity of food-grade rPET sheets, advanced filtration techniques are employed throughout the production process. Various filtration technologies such as melt filters, screen changers, and fine filtration systems are utilized. These systems are critical in removing micro-contaminants, additives, and other particulate matter from the rPET melt.

Effectiveness in Removing Micro-Contaminants and Additives

The effectiveness of these filtration techniques ensures that the final food-grade rPET sheets maintain high standards of cleanliness. As contaminants are removed at multiple stages in the production cycle, the material's quality is significantly improved. This rigorous approach to filtration supports compliance with health and safety standards necessary for food contact materials, reinforcing the overall value of using food-grade rPET sheets in packaging applications.

For those seeking a reliable partner in food-grade packaging solutions, Intco Plastic offers exceptional products, including their Food-grade R-PET Sheet, which has been certified by the appropriate food safety authorities.

As the market moves towards sustainability and environmental awareness, utilizing food-grade rPET not only serves a functional purpose but also aligns with your commitment to reducing plastic waste. The solution offered by Intco Plastic may streamline your packaging operations while ensuring adherence to all safety regulations.

Washing and Pre-Treatment Processes: Ensuring a Clean Start

Initial Washing Steps

The initial washing steps are pivotal in removing significant surface contaminants from post-consumer PET materials. This phase typically involves several mechanical processes such as rinsing, soaking, and agitating the shredded PET flakes in water to dislodge foreign materials. Labels, lids, and rings can often cling to the surface and must be removed thoroughly to ensure high-quality end products. By executing these washing procedures effectively, the foundation for producing clean food-grade rPET sheets is established, thus paving the way for subsequent treatments.

Removing Labels, Lids, and Rings

Label and lid removal occurs during the washing step and is critical for quality. The adhesives used in labels can pose a risk of contamination, while lids and rings can impede the recycling process. Therefore, specialized equipment such as label removers and centrifugal washing systems are utilized. These machines employ mechanical agitation to ensure that all recyclable components are stripped away, leaving a clean substrate suitable for further processing.

Chemical Treatments for Additional Safety

Once the physical contaminants have been eliminated, chemical treatments are employed to enhance the safety and reliability of the recycled material. Various detergents and cleaning agents are applied to dissolve any remaining contaminants that mechanical washing may not have addressed. This chemical washing process is crucial in ensuring that any residues, odors, or chemical traces are removed. Such treatments are especially important for food-grade applications, as even minute contaminants could compromise product safety and quality.

Addressing Challenges in Producing High-Quality Food-Grade rPET

Quality of Postconsumer Scrap Materials

The quality of postconsumer scrap materials significantly impacts the production of high-quality food-grade rPET sheets. Variability in the source of recycled materials can introduce impurities that affect the final product's properties. By carefully sorting and categorizing the incoming materials, manufacturers can minimize risks associated with inferior-quality inputs. It’s essential to implement a stringent quality control process during the collection and segregation phases to ensure that only suitable materials proceed through the production pipeline.

Steps to Improve Material Performance and Consistency

To enhance the performance and consistency of food-grade rPET sheets, manufacturers often go through various upgrading procedures. Integrating advanced sorting technologies and purification methods can lead to uniform quality in the raw materials. Additionally, investing in training and operational best practices can help staff effectively manage the sorting and cleaning processes. Recognizing the importance of these steps will not only elevate the end user's experience but also foster trust in the sustainability claims associated with these products.

Integrated Solution for High-Quality Food-Grade Recycled PET Sheets

For manufacturers aiming to achieve a quality guarantee in their food-grade rPET efforts, integrating advanced processing technologies can provide a powerful advantage. Adopting a comprehensive approach that includes not only washing and chemical treatments but also state-of-the-art filtration techniques ensures all contaminants are addressed thoroughly. This solution can drive efficiency and reduce variability in the end product. As outlined by Intco Plastic, their integrated solutions are designed specifically to meet the rigorous standards required for food-grade applications.

Choosing the Right Manufacturer for Your rPET Needs

Selecting a reliable manufacturer for food-grade rPET sheets is essential to ensuring your products meet high safety and quality standards. Engaging with companies that prioritize compliance with FDA and EFSA regulations will provide you peace of mind. It's advisable to assess manufacturers' certifications and their commitment to sustainable practices. Companies like Intco Plastic not only deliver high-quality Food Grade Recycled PET Sheet solutions but also emphasize on sustainable materials made from recycled inputs. This commitment reflects their understanding of both environmental responsibility and the priorities of today’s packaging landscape.

Conclusion

When it comes to the production process of food-grade rPET sheets, eliminating all contaminants is crucial. From the initial washing and chemical treatments to addressing challenges with postconsumer scrap material quality, the steps taken will ultimately influence the integrity of the final product. By partnering with manufacturers that provide integrated solutions and uphold stringent compliance standards, you can achieve a high-quality, sustainable product fit for food contact applications. Embracing these methods not only enhances your operational efficiency but also solidifies your dedication to environmental sustainability.

[techtired]

BD Plast: Leading Italian Innovation in Extrusion Solutions

Founded in the aftermath of World War II, BD Plast has navigated decades of technological and economic transformations, contributing significantly to the "Italian economic miracle." Today, the company employs fifty highly skilled professionals who drive its continuous growth and innovation. This dedicated team ensures that BD Plast remains agile and responsive to the dynamic demands of the market. BD Plast’s commitment to quality and innovation is evident in its comprehensive control over the entire production process. By internally designing, developing, and manufacturing all systems and components, the company can offer unique and highly customized solutions. This meticulous approach allows BD Plast to address the specific needs of its clients, providing everything from individual screen changers to complete industrial solutions for extrusion lines. CleanChanger®: A Revolution in Extrusion Efficiency One of BD Plast’s standout products is the CleanChanger®, a fully insulated self-cleaning screen changer. This product, patented in both Italy and the United States, can handle up to 400 self-cleaning cycles autonomously, significantly minimizing waste and enabling 100% material reuse. It is equipped with a fully automatic breaker plate expeller. It is suitable for a wide range of applications, including granulation, compounding, recycling, extrusion, blown and flat film production, tubing, profiles, wire granulation, underwater granulation, Hotmelt coating, and masterbatch production. The CleanChanger® operates with remarkable efficiency, thanks to a PLC-controlled self-cleaning sequence that reduces production costs and enhances the overall efficiency of the supply chain. According to Dante Boicelli, CEO of BD Plast, this innovation operates effectively even at lower pressures, making it versatile for various industrial applications. The product can function at working pressures ranging from 8 to 15 bar, compared to the 40 to 50 bar typically required by similar systems, leading to significant energy savings and improved operational efficiency. Commitment to Sustainability and Circular Economy BD Plast’s dedication to sustainability is evident in its efforts to develop high-efficiency filtration systems that support the circular economy. By producing cleaner, purer, and higher-quality plastic, BD Plast contributes to the increased use of recycled materials in industrial production. This step is crucial in today’s market, where the demand for sustainable practices is growing. Another notable product is the BDOx2 screen changer, which ensures perfect flow continuity even at high working pressures. This product is particularly effective for single-layer lines with product thicknesses up to 10 microns and is available in diameters ranging from 45 to 350 mm. BD Plast at NPE: Showcasing Innovation in Orlando Recently, BD Plast participated in NPE, the Plastics Show held at the Orange County Convention Center in Orlando, Florida. This global event provided BD Plast with a platform to showcase its latest innovations in extrusion technology. The company’s presence at NPE underscores its commitment to international leadership and innovation in the plastics industry. Customer-Centric Approach BD Plast’s success is rooted in its customer-centric approach. The company prioritizes positive customer experiences through exceptional technical support, the availability of spare parts, prompt deliveries, and rapid response times. By embracing Industry 4.0 protocols, BD Plast ensures optimal service and direct control over system operations. The company’s commitment to customer satisfaction is evident in its design process, where engineers analyze and interpret customer needs to create tailored solutions. BD Plast’s solutions are highly customized, ensuring close collaboration with customers’ technical offices to understand and meet specific requirements thoroughly. This approach allows BD Plast to provide a comprehensive technological package ready for integration into the main production plant, ensuring seamless functionality and superior performance. BD Plast’s customer-centric philosophy extends to its global reach, with a reliable supply of spare parts shipped promptly to customers worldwide. This ensures minimal downtime and maximum efficiency for clients, reinforcing BD Plast’s reputation as a dependable partner in the extrusion industry. For more information about BD Plast and its revolutionary CleanChanger® technology, visit www.bdplast.com and www.cleanchanger.com. Read the full article

[adroitextrusion]

Supplier of Monolayer Blown Film Machine in West Bengal

Adroit Extrusion is a Supplier of Monolayer Blown Film Machine in West Bengal. We manufacture Monolayer Blown Film Machines in Ahmedabad, Gujarat, India. Adroit Extrusion are Manufacturer, Supplier, and Exporter of Monolayer Blown Film, ABA and AB Blown Film Machine and MultiLayer Blown Film Machine. We design our monolayer blown film lines to accommodate a diverse range of resins, applications, and production levels. This ensures customers receive top-quality film while optimizing resource use, facilitating quick startups and changeovers, minimizing waste, and achieving high productivity. Our monolayer blown film lines process polymers such as LD, LLD, HM, and HDPE, offering outputs from 30 kg/hr to 200 kg/hr and lay-flat widths from 500 mm to 3000 mm. Features include a motorized bubble cage surface winder with taper tension control, manual screen changer, oscillating haul-off, motorized bubble cooling system, barrier screw, gravimetric blending/dosing system, liquid PIB dosing system, and grooved feed section, ensuring advanced functionality and performance. Specification: Model Name: Monolayer Blown Film Plant Material Used: LDPE, LLDPE, HDPE, CACO3, Virgin Raw Materials etc. Output Range: 30 - 200 kg/hr Screw Diameter: 35/45/55/65/75 (Customized) Layflat Film Width: 500 - 3000 mm Thickness Range: 20 microns to 150 microns Application: Carry Bag Film Stretch Film Shrink Film Biodegradable Film Shopping Bag Film Garbage Film Adroit Extrusion is a Supplier of Monolayer Blown Film Machine in West Bengal and includes locations like Kolkata, Siliguri, Asansol, Durgapur, Howrah, Darjeeling, Malda, Kharagpur, Bardhaman, Krishnanagar, Jalpaiguri, Kalimpong, Kamarhati, Kanchrapara, Kharagpur, Malda, Midnapore, Murshidabad, Nabadwip, Palashi, Panihati, Purulia, Raiganj, Santipur, Shantiniketan, Shrirampur, Siliguri, Siuri, Tamluk, Titagarh. For more information, we welcome you to engage in a professional conversation with our team. View Product: Click Here Read the full article

[fibermints]

The Fundamental Principles Behind Plastic Regeneration Pelletizing Machinery

Introduction to Plastic Regeneration and Pelletizing

Plastic waste poses an increasingly severe environmental threat as global consumption continues rising. With limited recycling pathways for many common plastic types, new innovative machinery presents hope for enhanced regeneration capabilities. Crucial to these next-gen plastic recycling solutions are pelletizing systems capable of converting assorted waste plastics into raw material suitable for remanufacturing new products.

Fundamental Components of Plastic Pelletizing Lines

Advanced plastic regeneration pelletizing lines comprise several core subsystems executing key transformation stages:

Plastic Feed Handling and Sorting

Various classification technologies filter and sort inbound plastic waste streams to achieve the targeted polymer types and purity levels for pellet production. Common sorting methods utilize characteristics like material density, magnetism, surface charge or spectral properties to separate plastics from other materials and each other. Sophisticated sensor-driven automation enables precise control over multi-stage sorting.

Size Reduction and Washing

After sorting, shredders and granulators grind the plastics down to uniform chip sizes needed for melting and extrusion. Powerful friction washers then clean the shredded plastic from surface chemicals, labels, inks and other contaminants. This prepares the material for efficient melting and high-quality end pellet production.

Melting and Homogenizing

Prepared plastic chips enter specialty extruder screw barrels which heat, pressurize and shear them into a homogenous polymer melt. Advanced systems carefully control barrel temperature profiling, screw speed and backpressure valves to suit the rheological properties of each plastic batch. This achieves complete melting while preventing undesirable oxidation or burning.

Filtration and Pelletizing

Pressurized melt flows through sophisticated screen changers and filters removing any residual impurities. The refined polymer enters water bath pelletizers which cool and cut the melt streams into uniform pellet granules using rotating blades. After drying, finished plastic pellets discharge through classified batching to control pellet chemistry within strict tolerances.

Fines Removal and Storage

The final pellets pass through vibrating sieves separating any undersized “fines” which get recycled back into the extruder. Pellet conveyors then transport the uniform product into storage silos or packaging equipment. Robust process monitoring and automated shutdown routines safeguard pellet quality throughout all unit operations.

Realizing Closed-Loop Recycled Plastics Through Pelletizing

Installing capable plastic pelletizing machinery with robust sorters, shredders, washers and extruders establishes directly recyclable material loops on-site. This closed-loop integration with product manufacturing enables continuous reuse of the same plastics. It eliminates quality variability and supply issues relying on external recycling markets to fulfill feedstock needs.

On-site plastic regeneration pellet production also conveys major commercial advantages:

Reduces plastic waste disposal loads and landfill impacts

Mitigates risks of rising virgin plastic costs

Provides supply stability insulating from market volatility

Unlocks revenue streams from pellet sales to third parties

Demonstrates corporate sustainability commitments

The Future of Circular Plastics Starts Now

Powerful pelletizing technology now exists to efficiently transform assorted waste plastics into high-quality recycled material. Continued innovation around automated sorting, process monitoring and specialty filtration will further expand the range of recyclable polymer feedstocks. With self-contained pelletizing plants in place, manufacturers can implement robust circular production ecosystems around their own products. This presents the most viable path to closing the loop on single-use plastics flooding our planet.

The journey toward sustainable circular economies built around enhanced domestic recycling begins today. Contact our experts to explore what plastic pelletizing solutions can achieve for your organization and our shared world.

I recommend Antecs for plastic recycling machine

[golfsimulatorguide]

🏌️ 𝗖𝗮𝗹𝗹𝗶𝗻𝗴 𝗮𝗹𝗹 𝗴𝗼𝗹𝗳 𝗲𝗻𝘁𝗵𝘂𝘀𝗶𝗮𝘀𝘁𝘀! 🏌️‍♀️

HOLIDAY DEAL: $500 Off SwingBay and SwingBay Packages through 12/15!

Looking to take your golf game to the next level? Look no further than the Swingbay Golf Simulator Screen & Enclosure! ⛳️

Looking to take your golf game to the next level? Look no further than the Swingbay Golf Simulator Screen & Enclosure! ⛳️🔥

This top-of-the-line simulator screen and enclosure combo is a game-changer for any golfer. With its ultra-realistic graphics and accurate shot tracking, you'll feel like you're on the green of your favorite course. 🌿🏌️‍♂️

No more worrying about the weather or limited tee times. Rain or shine, day or night, you can practice your swing and improve your skills from the comfort of your own home. 🌧️🌙

Don't miss out on this incredible opportunity to bring the golf course to your doorstep. Swingbay Golf Simulator Screen & Enclosure - your ticket to golfing greatness! ⛳️🏆

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Tee It Up Anytime, Rain or Shine with the SwingBay Golf Simulator Screen & Enclosure. The SwingBay was meticulously developed by our team at Rain or Shine Golf based on feedback from hundreds of our past golf simulator customers.

Featuring a heavy-duty impact screen and an easy to assembly framing system, you will be golfing anytime you want, day or night. Whether for your garage or basement, the SwingBay is the must-have indoor golf simulator screen and enclosure.

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The SwingBay Golf Simulator Screen is a high quality, impact-resistant screen that provides a clear, crisp image of your virtual golf course. This enclosure offers plenty of space to work on your swing and play full rounds of golf with your friends and family.

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Screen: 4:3 optimized ballistics grade woven polyester Blackout Curtain: Ripstop nylon Framing: 1.5" Aluminum extrusion, ball bungee installation Hardware: Steel brackets with all tools required Recommended Space Requirements: 9’H x 12’W x 16’D ALWAYS get your driver out and take a slow backswing to ensure you have enough ceiling height prior to purchase*

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Crisp White Ballistics Grade Impact Screen

Heavy Duty Aluminum Framing With All Needed Tools and Hardware

Nylon Blackout Curtain Enclosure

Triangular Side Netting x2 with Sandbags

Frame Padding Flaps

Integrated Velcro Assembly

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[arlingtonmachinery]

We want to Buy Your Equipment!

Have machinery sitting around that you aren't using anymore?

Arlington buys all types of plastic processing equipment in varying condition.

Need to upgrade a machine or looking for a totally different machine?

We also offer trade-ins or trade-in credit!

CLICK HERE! Tell us what you have and we will get back to you quickly with an offer!

Arlington is always looking for all kinds of plastic processing machinery including extrusion equipment, granulators, shredders, screen changers, injection molding machines and plastic support equipment.

[henry-jwell]

JW-TB Double-panel hydraulic non-stop screen changer series

Double-panel hydraulic non-stop screen changer series ● Adopts advanced pressure seal technology, through the pressure of polymers to drive seal components, to achieve the best sealing effect and change screen more quickly. ● Using high grade alloy steel, after nitriding process to extended product life span greatly. ● Alternating work mode, can guarantee the material flow continuous, stability and the process parameters of repeatability,when change the screen. ● After optimization of rheological through cellular plate, to reduce the extrusion process fluid shear. ● Using inner heating device, for the safe and energy-saving. Fully enclosed wires, for the elegant appearance. ● Modular combination patterns, suitable for different standard extrusion machine, and convenient to clean. Suitable Application ● Blown or Cast films ● Flat sheet extrusion ● Pipes extrusion ● Recycling ● Master- batch and compound pelletizing ● Blow Molding Main technical specification Model Filtration Area Output Operating pressure Heating Power Heating Zones JW-TB-50 1960mm² ×2 50-100kg/h 30Mpa 18kw 4 JW-TB-70 3850mm² ×2 80-150kg/h 30Mpa 18kw 4 JW-TB-100 7850mm² ×2 150-380kg/h 25Mpa 18kw 6 JW-TB-120 11300mm² ×2 350-700kg/h 25Mpa 20.4kw 6 JW-TB-150 17670mm² ×2 400-1000kg/h 25Mpa 22kw 6 JW-TB-180 25440mm² ×2 700-1300kg/h 20Mpa 27kw 6 JW-TB-200 31415mm² ×2 850-1700kg/h 18Mpa 41kw 6 JW-TB-250 49087mm² ×2 1100-2200kg/h 16Mpa 52kw 6 JW-TB-300 70685mm² ×2 1500-2600kg/h 15Mpa 72kw 6 Note: The specifications are subject to change without prior notice. Product image display Read the full article

[bluebonnetpatiocovers]

Most Popular Types of Patio Screen Enclosures

Are mosquitoes ruining your house parties?

Are you looking for a fail-safe system to make outdoor seating time more enjoyable?

It is possible to hang outside of your house all day without worrying about mosquitoes, rain, debris or harsh sun rays. Patio screen rooms make a world of difference in both residential and commercial projects. These screen enclosures are great for outside spaces like porches, balconies, patios, doorways, gazebos or any other space that needs protection and privacy. In today’s post, we will discuss the top two types of patio screens that you can consider for hosting bug free outdoor parties at your home.

Custom screen rooms

Fibreglass screen rooms are a great way to expand the outdoor living area. It is an affordable option to make your porch enjoyable all year long. These versatile enclosures feature fibreglass screens fitted using aluminum extrusion. These are quick to install and a cost-effective alternative to traditional screened porch constructions.

Make the outdoor seating space more enjoyable within a couple of days by adding fibreglass screens. You can create an enclosed structure and control heat and airflow in every weather. Further, you can create a bug-free environment for enjoying quality time with your loved ones. The options of French doors and integrated doggy doors make it a popular choice among homeowners. The aluminum extrusion offers a rust-free and durable performance. Besides, the options of mesh sizes and colours for aluminum extrusion have made these enclosures a total game-changer.   

The best part, you can integrate the screens into your existing patio or start from scratch to create a standalone screened room in a few days.  

Retractable screens for the patio

If you don’t like the idea of a fixed enclosure you can try the retractable patio cover screen. These screens come with the added benefit of flexibility. These are motorized screens that you can roll down or up as per your requirements.

Motorized retractable screens are great for porches, patios and balconies or any other outdoor space where you want privacy and protection against rain, sun and bugs. These screens are sturdy and long lasting and have passed wind tests. These screens efficiently avoid blowouts during harsh climates.

Popular for both residential and commercial applications, these retractable screens offer cost-effective and energy efficient sun shading. The sleek and low profile aluminum housing is available in classic colour options that go well with all sorts of décor schemes. Furthermore, buyers get the option of custom powder coating to make a seamless screen enclosure complementing the existing colour scheme.

There are various screen options making these enclosures a best-seller product. The options include standard screens that are great for creating bug-free enclosures and Solar screens that efficiently block 95% of UV rays. The UV ray blocking efficiency is even great for reducing energy bills by 50% for heating and cooling. In addition to this, there are many decorator fabrics in various colours and weaves to amplify the décor statement. As well as there are clear vinyl options for total climate control.  

Conclusion

Screen enclosures make the outdoor seating area more enjoyable without compromising the aesthetics. Further, the added flexibility of retractable screens not just adds value to the home but also extends the seating space. Both screened enclosures and retractable screens have gained immense popularity for faster and quick installation. Further, aluminum housing and fibreglass mesh assure rust-free and durable performance.

For quality construction and lots of customization options for patio screens, connect with Blue Bonnet Patio Covers. They are the industry leaders in providing the best deals on Structall Screen Rooms and retractable patio screens.

[rajhansplaticmachinery]

Platen Type changer is an elemental device. It is used to filter materials coming out of the extruder before the granulation stage. This guarantees a pure and flawless end product. So, it all boils down to choosing the platen type screen changer manufacturer. Rajhans is a renowned name that takes pride in offering the best quality platen type screen changer. It’s application are  Offline Screen changer for Extruder, Pipe Plant, Lamination Plant, Sheet Plant, Master Batch Plant,  Screen changer for Plastic Extrusion

[pvc-compound]

Best PVC compound machine Manufacturer

HPMC is top growing PVC compound machine Manufacturer in India. It was established in 1973 and also has an ISO 9001:2008 certfied manufacturer, exporter and supplier of plastic processing machine. PVC compound machine manufacturer consists of extruder, die, electronic screen changer, die face cutting system/water palletizer & pallets cooling unit.  Our team behind the walls works day and night to make our customer satisfaction. We have build a great respect in our industry which helps us to grew better more

Applications of our products: 1 Plastic and polymer application 2 Direct compounding 3 PVC soft cable grade compounding 4 Inline compounding 5 Compression and injection moulding 6 Film and sheet extrusion

Address- Hindustan Plastic & Machine Corporation         5, Category II, DSIDC Industrial Area Nangloi, Delhi-110041 Phone : 011-25473361,25471114, (M)+91 9891061200, 9899074169, 9312645101 E-mail : info@hindustanplastics.com

Website: https://www.hpmcindia.com/pvc-compound-machine.html

[nonwovenface]

The greater the amount of electret masterbatch added

The greater the amount of electret masterbatch added, the better the electrostatic effect, but the greater the impact on the fabric, it needs to be balanced, and the premise is to make the fabric well. 1. Five: Explanation about static attenuation To improve the efficiency of air filtration of meltblown cloth, it is also necessary to pass electret treatment and add electret masterbatch to improve its electrostatic adsorption force and more effectively filter the sub-micron particles in the gas carrier. If the wind pressure is below 0. Generally speaking, the basic physical filtration efficiency of meltblown cloth needs to reach 60%-80%, and then through the addition of electret masterbatch and electret treatment, a relatively stable filtration efficiency can be achieved.

If you want to make a cloth with stable filtration efficiency, first of all, without adding electret masterbatch and electret treatment, the basic physical filtration efficiency of the melt blown cloth is required to be higher.. Screw temperature: set 190 degrees, 230 degrees, 230 degrees, . The cloth made under the conditions of relatively high die temperature and hot air temperature looks soft, but its toughness is insufficient. But the decay is also very fast; 2. 2: Tuning initial parameter setting 1. After the meltblown cloth is treated by electret, besides the electret masterbatch can be charged with static electricity, the meltblown PP material can also be charged with static electricity. Four: Application case (temperature setting)

1.In the production process of meltblown non-woven fabrics, because of the parameter ratio of temperature, air pressure, mold, speed, etc. Die temperature: 240 degrees, 240 degrees, Compare performance again; 6. Quick screen changer, metering pump, die filter: 245 degrees; 4. If the cloth is still not soft at the recommended relatively high temperature, there may be a problem with temperature sensing or temperature control, so directly continue to increase the temperature until the cloth is in a soft state;

2. Retracting distance: 15-19 cm; 7. Slowly reduce the temperature of the die head and the temperature of the hot air until the cloth just looks a little hard;

3.. Wind pressure: 0.5MPa (generally low temperature PP material, the wind pressure can be selected a little smaller, medium and high temperature materials, the melting index of about 1300 materials, the wind pressure can be larger);

4. As time goes by, the cloth will become brittle and cause a drop in filter efficiency; Six: Debugging methods to improve filtration efficiency 1. The following is the experience summarized in the actual production process for your reference: One: Tuning process 1. Heating pot temperature: 300 degrees, hot air temperature: 240 degrees;

5. It is recommended to contact the equipment manufacturer, or the material is of serious quality problem; 5., it is necessary to carry out continuous running-in and debugging to achieve the best results.2-0. After being evaluated by authoritative scientific research institutions in the industry, after 4-8 hours of treatment with high temperature (50~80℃) and humidity (30~50RH), the filtration efficiency can reach more than 95%. It is recommended to use low temperature materials for large equipment, and medium and high temperature materials for small equipment; 4. The morphology is dispersed in the matrix resin and prepared. According to the speed of rewinding, the electret is generally enough to add two electrets, the static voltage is 40kv-60kv, and the distance between the electret rods is 5-7 cm, and the net rewinding speed is slow plus one static electricity. Quick screen changer, metering pump, die filter screen: 240 degrees; 4..2Mpa and the die temperature is near or below 210°C, there will be a phenomenon of flying, which may cause abnormal melting finger of the melt-blown PP material, or abnormal temperature induction, abnormal wind pressure display, or the size of the air duct tuyere If the angle is abnormal, you need to contact the equipment manufacturer or raw material manufacturer to eliminate the abnormality; 3. Different electret masterbatches have different corresponding process parameters, and can be adjusted to the best state according to this rapid adjustment process. Adjust the wind pressure, the amount of melt extrusion, and the distance of the net to make the cloth softer; 5. You can choose to add positive Electricity, you can also choose to add negative electricity, which can be determined by experiment. Heating pot temperature: 300 degrees, hot air temperature: 220 degrees. The decrease in filtration efficiency is not the same as the attenuation of electret masterbatch static electricity, but the static attenuation of meltblown PP may cause the filtration efficiency to drop quickly; 3. The screw speed is moderate or small (the wind pressure is small, the extrusion volume can be small, and the wind pressure is large, and the extrusion volume can be larger)..

In terms of about 10-20%, and this static electricity is relatively stable, under suitable storage conditions, the attenuation is very slow, and the melt blown PP material can also carry a lot of static electricity, which can contribute a very large filter efficiency improvement. The size of the tuyere is consistent with the distance from the tip of the spinneret to the plane of the wind knife, 1-2mm; 8. On this basis, it can be Add electret masterbatch without electret treatment to test the difference in filtration efficiency... At the same time, the filter position and the temperature need to be higher to reduce The frequency of plugging the die. Adjust the winding speed to achieve full traction effect; High quality NONWOVEN face mask suppliers . The addition of electret masterbatch generally needs to be matched by adjusting appropriate process parameters

[adroitextrusion]

Supplier of Mono Layer Blown Film Machine in West Bengal

Adroit Extrusion is Supplier of Mono Layer Blown Film Machine in West Bengal. Adroit Extrusion is a Manufacturer, Exporter, and Supplier of Mono Layer Blown Film in West Bengal. We are ISO 9001:2015 certified company, in Ahmedabad, Gujarat, India. Our machine utilizes a process integral to plastic production, undergoing rigorous testing to ensure functionality and perfection. The manufacturers design the monolayer blown film extrusion machine for ease of installation and operation. Maintenance and replacement costs for this machine are minimal, making it highly efficient and cost-effective. Our monolayer blown film lines process polymers like LD, LLD, HM, and HDPE, offering lay-flat widths from 500 mm to 3000 mm and outputs ranging from 30 kg/hr to 200 kg/hr. Key features include a barrier screw, motorized bubble chilling system, oscillating haul-off, motorized bubble cage surface winder with taper tension control, manual screen changer, gravimetric blending/dosing system, and liquid PIB dosing system, ensuring advanced functionality. Why Choose Our Mono Layer Blown Film Machines? High Efficiency: Advanced technology ensures optimal productivity and film quality. Ease of Operation: User-friendly design facilitates seamless operation and maintenance. Quality Assurance: Rigorous testing and quality control measures ensure consistent performance. Customization Options: Adapt machines to meet specific production requirements and preferences. Applications: Food Packaging Agricultural Use Industrial Packaging Contact us today to explore our range of machines and how they can optimize your packaging operations effectively. Adroit Extrusion is a Supplier of Mono Layer Blown Film Machine in West Bengal including locations like Kolkata, Siliguri, Asansol, Durgapur, Howrah, Darjeeling, Malda, Kharagpur, Bardhaman, Krishnanagar, Jalpaiguri, Kalimpong, Kamarhati, Kanchrapara, Kharagpur, Malda, Midnapore, Murshidabad, Nabadwip, Palashi, Panihati, Purulia, Raiganj, Santipur, Shantiniketan, Shrirampur, Siliguri, Siuri, Tamluk, Titagarh. For further information, feel free to contact us. View Product: Click Here Read the full article

[desuplastic]

Production Process of PET Sheet

Raw material of PET sheet

Like other plastics, the properties of PET sheet are closely related to molecular mass. Intrinsic viscosity determines molecular mass. The greater the intrinsic viscosity, the better the physicochemical properties, but the poor fluidity makes molding difficult. The lower the intrinsic viscosity, the worse the physicochemical property and the worse the impact resistance. Therefore, the intrinsic viscosity of the PET transparent sheet should be 0.8dl/g-0.9dl/g.

Production process

The main production equipment of PET transparent sheet is: crystallization tower-drying tower-extruder-die head-three roll burnishing machine-Roll up.

The production process is: crystallization of raw materials-drying-extrusion plasticization-extrusion molding-calendering and shaping-rolling.

Crystallization: The PET particles are heated and crystallized in the crystallization tower to make the molecules arranged neatly, and then the glass transition temperature of the particles is increased. The purpose is to prevent adhesion during the drying process and block the hopper. Crystallization is generally an indispensable step. The crystallization takes 30 minutes to 90 minutes, and the temperature is less than 149°C.

Drying: Under high temperature conditions, water can cause hydrolytic degradation of PET, resulting in a decrease in its Intrinsic viscosity, and its physical properties, especially impact strength, will decrease with the decrease of molecular mass. Therefore, PET must be dried before melt extrusion to reduce the moisture content, which should be less than 0.005%. Drying uses a desiccant dryer. Due to the hygroscopicity of the PET material, water will penetrate deep into the surface of the sheet to form molecular bonds, and another part of the moisture will exist deep inside the sheet, making it difficult to dry. Therefore, ordinary hot air cannot be used. The hot air dew point is required to be below -40℃, and the hot air is passed into the drying hopper through a closed loop for continuous drying.

Extrusion molding: After crystallization and drying, PET is transformed into a high polymer with obvious melting point. The molding temperature of high polymer is high and the temperature control range is narrow. A barrier screw dedicated to polyester is used to separate the unmelted pellets from the melt, which helps to maintain a longer shearing process and increase the output of the extruder. The flexible die lip die head with streamline baffle rods is adopted. The die lip is pointed and tapered. The streamline flow channel and the non-scratch die lip indicate that the smoothness should be good. The heater of the die head has the function of draining and cleaning. The die lip gap should ensure good uniformity, and the uniform die lip gap of the die directly affects the lateral thickness deviation of the sheet and the flatness of the calendering. When extruding into a sheet, the temperatures corresponding to the front area of the fuselage, the middle area of the fuselage, the rear area of the fuselage, the screen changer and the die head are 240℃-260℃, 265℃-275℃, 260℃-265℃, 260 ℃-265℃, 255℃-265℃.

Calendering: The melt enters the three-roll calender directly after coming out of the machine head for calendering and cooling. The distance between the three-roll calender and the machine head is generally about 8cm, because if the distance is too large, the sheet will easily sag And wrinkles occur, which leads to poor finish of the sheet. In addition, because the distance is too large, the heat dissipation and cooling are too slow, and the crystals become white, which is not conducive to calendering. The three-roller calendering unit consists of three rollers, the middle roller axis is fixed, and the temperature of the roller surface is 40℃-50℃ during cooling and calendering. The axis of the upper and lower rollers can be moved up and down, and the roller gap can be adjusted by moving the axis up and down. The temperature of the upper and lower rollers is 30℃-60℃ and 52℃-68℃ respectively. The three rollers should ensure the speed synchronization. Should be above the extrusion rate, the purpose is to offset the expansion of the material when it leaves the die and weaken the internal stress of the sheet, so that the wrinkles disappear. PET will crystallize in the range of 100℃-250℃, and the crystallization rate is 140℃-180℃ when the crystallization rate is faster, so the crystallization can be completed in a few seconds.

Rolling: The sheet comes out of the calender roller and enters the traction device by the guide roller. The components of the traction device are the active rubber roller and the passive rubber roller.

Common quality problems and solutions in PET transparent sheet production

The sheet material produces crystal point impurities:. the reason is due to the raw materials and scraps. The PET particles themselves will not produce crystal point impurities, but during the processing process, due to drying problems and more or less added scraps are introduced because of the bad environment Impurities or low-quality raw materials make it impossible to eliminate them during the sheet forming process.

Horizontal lines and water lines (orange peel lines).The water mark is because the material flow from the extruder die head enters the calender roll because there is no residual material between the calender rolls, so the sheet is not compacted, and the surface of the sheet exhibits a poor finish like orange peel. The lines. The solution is that there must be visible residual material between the calender rolls, and the residual material rotates evenly. The horizontal grain is the process defect of the extrusion method, just like the water ripple of the calendering method, the indentation caused by the speed difference between the two rollers of the calender roll, the solution is to require the three-roller calender The roller speed control accuracy is improved, and the synchronization accuracy must be improved to reduce the horizontal lines.

Sheet yellow, black spots or impurities, streamlines, uneven calendering, etc. The main reason for the occurrence of bubbles in the sheet is that the pellets are not completely dried and the water content exceeds 0.005%. If the water is not sufficiently dried, it will penetrate into the slice to indicate the formation of molecular bonds or remain deep inside the slice. If the drying temperature is too low or the time is too short, it will affect the drying effect. When blisters appear on the sheet, the drying temperature and time should be adjusted immediately. The main reason for the yellowing of the sheet is that the drying temperature is too high or the time is too long. At this time, the main measures are to lower the drying temperature and reduce the drying time. Another reason for the yellowing of the sheet is that the temperature of the melt is too high. At this time, the melt temperature should be reduced quickly. The main reason for the black spots and impurities in the sheet is that the filter screen is broken or the PET decomposition material remains in the extruder.

The main points of PET transparent sheet production

1.The primary conditions for the production of PET transparent sheets are the drying time and the control of the hot air dew point. The drying effect directly determines the physical and mechanical properties and production of the sheet. Attention should be paid to the control of drying temperature and time when drying. The drying temperature and time can neither be too high nor too low. If the dew point cannot be lowered, check the molecular sieve. The aging molecular sieve cannot absorb the moisture in the air and cannot achieve the purpose of drying the slice. At this time, the molecular sieve must be replaced.

2.If the temperature of the melt exceeds 280°C, the PET sheet will be discolored or decomposed, so the melt temperature must be controlled below 280°C.

3.The die lip gap of the die head determines the flatness and thickness uniformity of the sheet. The three-roller temperature plays a key role in the transparency of the sheet and indicates the smoothness. The PET melt needs to quickly avoid the temperature zone with the fastest crystallization rate, and instantly change from the melting temperature. It drops below the crystallization temperature, so the distance between the die and the calender roll is particularly important.

Reference source: https://desuplastic.com/study/production-process-of-pet-sheet/

[predictoreports]

A continuous screen changer is a machine that filters out impurities in the polymer extrusion process—without interrupting the process when a dirty screen needs to be changed. It’s used in melt filtration processes where debris can clog up screens in a very short time and process disruptions are costly. Markets and extrusion processes that employ continuous screen changers include pipe and profile, film and sheet, compounding, resin production, blow molding, nonwovens, and specialty material. The Asia-Pacific Continuous Screen Changers market will reach xxx Million USD in 2018 and CAGR xx% 2018-2023. The report begins from overview of Industry Chain structure, and describes industry environment, then analyses market size and forecast of Continuous Screen Changers by product, region and application, in addition, this report introduces market competition situation among the vendors and company profile, besides, market price analysis and value chain features are covered in this report.

[henry-jwell]

JW-DB Single-panel with double working position screen changer

Single-panel with double working position screen changer ● Extruder screw can draw from the screen changer directly, it is convenient to remove and clean. ● Adopts advanced pressure adaptive sealing technology, through the pressure of polymers to drive seal components, to achieve the best sealing effect and change screen more quickly. ● Penetrating type bolts connect the extruder. ● Modular combinations, suitable for different standard extrusion machine, and convenient to clean. ● Adopts the inner heating device, for safe and energy-saving. Fully enclosed wires, for elegant appearance. Main technical specification Model Filtration Area Output Operating pressure Heating Power Heating Zones JW-DB-50 1960mm² 50-100kg/h 25Mpa 4kw 2 JW-DB-70 3850mm² 80-150kg/h 25Mpa 4kw 2 JW-DB-100 7850mm² 150-350kg/h 25Mpa 6kw 3 JW-DB-120 11300mm² 250-400kg/h 25Mpa 6.4kw 3 JW-DB-150 17670mm² 350-600kg/h 25Mpa 7kw 3 JW-DB-180 25440mm² 450-1000kg/h 25Mpa 8kw 3 JW-DB-200 31415mm² 550-1300kg/h 20Mpa 12kw 3 JW-DB-250 49087mm² 850-1700kg/h 18Mpa 13kw 3 JW-DB-300 70685mm² 1100-2000kg/h 15Mpa 14kw 3 Note: The specifications are subject to change without prior notice. Product image display Read the full article

[rajhansplaticmachinery]

As the need for cassette-style continuous screen changers has increased, many companies have entered this industry. If you're searching for India's best manufacturer of continuous screen changers, you should put your trust in Rajhans. We have built a name for ourselves by creating products of the highest calibre that adhere to quality requirements. Our constant screen changer, a cassette model, is designed to satisfy the PP box strapping plant's and pet strapping sectors' requirements.

Application of cassette-type continuous screen changer:

Master Batch Plant

Filler Plant

Pipe Plant

Texturizing Plant

Mono Filament Plant

Multi-Filament Plant

Box Strapping Plant (PP/PET)

Box Strapping Plant (PP/PET)

Special Design for PVC