PVC Coated Vinyl
PVC coated vinyl (Knife coated tarpalin) is a smooth poly-vinyl chloride resin coated onto a layer of 100% polyester woven or warpknitted fabric. This polyester is waterproof and does not fray, rip, or tear, making it strong and durable for all types of applications. The coating used for this vinyl often has fire retardant additives, anti-fungicides, and UV stabilizers. Coated PVC tarpaulin could meet standard flame behaviors, cadmium free, EN 71-3, reach regulations, anti static and other international standard.
Gernarlly speaking, pvc tarpaulin can be split into 4 types according to the technology and machine used:
- Calendering machine: This machine is used to make pvc film. It can stir the pvc raw material to the paste. Then use roller system to calender into different thickness pvc films. Calendared vinyl films are formed from an older process of taking a dough-like material consisting of PVC, pigments, plasticizer and stabilizer, mixing them in an extruder and then rolling it through polished heated rollers which stretches the material to the proper thickness. The film is then fused to a polyester backing. The process is completed when the material is given a gloss, matte or embossed finish.
- Cold lamination machine: This machine is the first generation invented for this industry. It is still wildly used to laminate pvc films onto polyester base fabric. It’s short process, high speed and low running cost. The disadvantage is the drum temprature and pressure is limited so the product quality is for short life time material like flex banner and tarpaulin for low price market.
- Hot laminateion machine: This is the PRO version of cold lamination machine, it is almost twice longer process. This machine can reach much higher temprature and pressure, it has much more complex embossing roller and surface treatment system to can make high quality, high gsm material that can be used for tents, covers, inflatables…etc and with it’s surface treatment it can add acrylic coating to make it self cleaning. Also this machine can add extra glue to the film or base fabric to make simi-coated pvc tarpaulin which is better adhensive performance to improve the technical data and life-span of the product.
- Knife coating machine is not like lamination machine that need calendering machine supply pvc film in big rolls. It directly coat pvc resin on to the base fabric with a doctor blade. Then the material go through embossing roller to heatcase for drying. Knife coating machine is a kind of luxury option for vinyls, the coating quality have led to significant increases in lifespan over 10 years. And it can make heavy-duty material over 1500gsm for membrane structure or tents. PVC coated vinyl has excellent tensile strength. This fabric is useful for both permanent and temporary projects. The PVC coated vinyl can be used for things like luggage, bags, cases, and protective coverings. PVC coated vinyl roll widths from 1.0mts -5.1mts, weight From 240gsm -2700gsm, thickness from 0.19mm -2.0mm.
More information about pvc coated vinyl:
Following is our knife coated pvc tarpaulin catagory, click image to view specifications: