Self-supporting zipper bags why so love wrinkling, the original root in this!

Self-supporting zipper bag is soft packaging category is very high and popular products in particular, it has the advantages such as convenient take put, repeated use, the soft packaging manufacturer's production process, self-supporting zipper bags produce fold the probability is very high, how can have this kind of phenomenon? Small make up take you looking for the sake of self-supporting zipper bags and wrinkled, reason for channel to find the solution. Self-supporting zipper bag as common fold has two kinds: one kind is zipper on both sides of the surface of the part level or fold; Another kind is zipper with packaging bag body sealing surface fold. Self-supporting zipper bags on both sides appear fold sometimes choose is closely associated with zipper, must pay attention to when buying zippers to its melting point and shrinkage to be less than or equal to the packing sealing layer of melting point and shrinkage, in case due to the melting point and shrinkage is more serious is not matching the fold under the condition of happening. Cooling in the process of bag making standard is one of the key elements, if the zipper after deformation can get sufficient cooling in front of the bag processing complete, the complete bag production and processing of self-supporting zipper bags will produce again under the storage standard will greatly reduce the probability of thermal contraction. If finish bag making, production, processing and packaging in the sealing layer and the zipper is still in the melting of the state or sticky bombs, then, under the storage standard, sealing layer and the zipper is sure to produce a sense of heat shrinkable film, causing the relative levels of surface drape. Therefore, bag making mechanism becomes cold surface temperature harm self-supporting zipper bags appearance quality of one of the key elements.