... good heat sealability. So we can say because of the composite layer, the film have good heatsealability.3,Good gas ... coefficient and good flatness, so in high-speed automatic machine, the film can through smoothly.Special introduction1,The product ... frictional coefficient and good flatness, so in high-speed automatic machine, the film can through smoothly. ( function(){ var aBigImageSrc = [ 'http ...