Discussion on the requirements of POF shrink film and PVC shrink film for shrinkage temperature

Some people may think: POF shrink filmand PVC shrink film are both shrink films, so how can they have different requirements for shrinkage temperature? Yes, they do have different requirements for shrinkage temperature because of their different materials. If you want to know what's going on, please see the following:

The requirements of POF shrink film and PVC shrink film for shrinkage temperature. The requirements of POF shrink film for temperature are higher than those of PVC shrink film. PVC shrink film can be thermally shrunk by household hair dryer, but POF shrink film can't. He needs a hot air gun to get into the shrink film.

POF is thin and tough, uniform in thickness, good in moisture resistance, soft in texture, high in tensile strength, high in tear resistance and adjustable in shrinkage. Environmental POF is non-toxic and does not produce toxic odor during processing, which meets FDA and USDA standards. POF film can keep its softness even at minus 20℃, without brittle crack, and it is suitable for storage and transportation of packaged goods in cold environment. POF heat shrinkable film plays a protective role, is not easy to be punctured, and can be used to package goods of any shape. In order to ensure the heat sealing strength of plastic composite flexible packaging, a certain heat sealing pressure is essential. Therefore, moderate and uniform heat sealing pressure is required in the heat sealing process.

PVC, with additional ingredients to enhance its heat resistance, toughness and ductility. The top layer of this surface film is paint, the main component in the middle is polyvinyl chloride, and the bottom layer is back coating adhesive. Because of its unique properties (rain-proof, fire-proof, antistatic, easy to shape) and the characteristics of low investment and high output, PVC film is widely used in building materials industry and packaging industry. Therefore, PVC film has the characteristics of high transparency, good gloss and high shrinkage.