How To Improve The Heat Sealability Of Flexible Packaging Materials

- Apr 03, 2019-

A polymer resin film having an amorphous structure or a low crystallinity melts rapidly upon heating, and such a polymer resin generally has heat-sealing properties; and a polymer resin having a high degree of crystallinity, a melting rate of a crystal region when heated It is relatively slow, so the heat-sealing property of the highly crystalline polymer resin film generally cannot meet the requirements of the bag making line. Of course, the heat sealing performance of the film also depends on the softening temperature, thermal conductivity, heating method, and the like of the resin.