loading

 Linyang - An expert in PVC tarpaulin / PVC film industry since 2002

PVDC multilayer co-extrusion film production technology

Due to the different methods of film, can be divided into multi-layer co-extrusion blown film and multilayer co-extrusion stretch film, both, compared to stretch film than blown film has more excellent transparency and dimensional stability, degree of thickness control more accurate. Such as sapphire company, it can produce three, five layers symmetric and asymmetric membrane structure, its product structure are as follows: symmetry class, PE/EVA/PVDC/EVA/PE; Not say class, PP/EVA/PVDC/EVA/PE. Practice shows that the success of a total of extrusion products production, depends on three key factors: the choice of polymer, screw, feed block and mold design and the best process conditions. Select material of each layer in the process of co-extrusion must have similar thermal performance ( Melting temperature and melt sticky degree, etc. ) , have bonding effect between layer and layer. With PVDC resin with affinity effect is very little, the most commonly used only EVA. Although PVDC that can tolerate 121 t cooking, and heat resistance of multi-layer co-extrusion, depends on the surface, and the co-extrusion layer and the lowest temperature tolerance in the sort of resin bonding resin. We know that EVA can only be used under 80 ℃, to have it as a bonding layer by the multi-layer co-extrusion film cannot be used for more than 80 ℃ long time use, with PVDC co-extrusion film packing meat can only use pasteurized, cannot be used for 121 ℃ cooking. In PVDC co-extrusion film production, PVDC barrier property decides the co-extrusion the barrier property of the product, 8 - table 8 is asymmetric PP/EVA/PVDC/EVA/PE five layers co-extrusion composite film detection index, membrane oxygen through the quantity of 4. 26 cmvm2, 24 h, ATM, water vapor through the quantity of 1. 79g/m2 . 值班。 PVDC co-extrusion application performance in: (1) for oxygen, water vapor blocking rate is high, used to wrap meat products, frozen products; Drugs, chemicals; Electronics, machinery, military industry products, precision parts, etc. (2) mechanical performance is good, suitable for automatic packaging machine should be used, for aseptic packaging of fresh milk, dairy products. (3) can be microwave heating.

GET IN TOUCH WITH Us
recommended articles
Info Center Application FAQ
2025 Chinese New Year Holiday Notice
With the Chinese New Year around the corner, we are sincerely here to thank you for your long-term support and trust in Zhongshan Linyang Plastic Co.,Ltd. in the past year.


We wish you and your family happy New Year in 2025!
Clear PVC tarpaulin is a versatile and durable material that has a wide range of applications and benefits.
Clear PVC tarpaulin sheets are an essential item for outdoor protection and coverage.
Weatherproofing Your Outdoor Equipment with Waterproof PVC Tarpaulin

As outdoor enthusiasts, we understand the importance of keeping our gear safe from the elements.
Tarps are widely used for a variety of purposes, from protecting boats and cars to covering construction materials.
Waterproof PVC Tarpaulin: A Must-Have for Camping and Hiking

Planning a camping or hiking trip can be an exciting endeavor, but it's important to be prepared for whatever weather conditions might come your way.
Choosing the Right Thickness for Your PVC Tarpaulin Roll

PVC tarpaulin is a versatile and durable material that is commonly used for a wide range of applications.
Agriculture has come a long way with the introduction of modern technology and innovative materials.
The Importance of Durability in Tarpaulin Materials

Tarpaulins are a staple in many industries, often serving as reliable covers for machinery, equipment, and other items that need protection from the elements.
When it comes to fire safety in buildings and structures, using fire-retardant materials is a crucial step in preventing the spread of flames and smoke.
no data
Customer service
detect