Tel: +86 188 2689 9458
source:Industry News release time:2022-09-16 Hits:
The zipper bag is a packaging form of plastic soft plastic packaging, which is convenient for taking food and can be used repeatedly to ensure the freshness of food. From the perspective of food packaging manufacturers, the production process requirements of bags without zippers are gradually increasing. Next, our company will take you to analyze the folds that often occur in zipper bags.
There are two common problems in zipper packaging bags: one is the local delamination or surface folds at both ends of the zipper; the other is the surface folds at the stitching of the zipper and the bag body.
The wrinkles at both ends of the zipper packaging bag are sometimes closely related to the choice of zipper. When purchasing zippers, we must pay attention that the melting point and shrinkage rate of the zipper should be lower than or equal to the melting point and shrinkage rate of the heat sealing layer of the composite film, so as to avoid the melting point and shrinkage rate of the composite film. Wrinkling that occurs when there is a severe mismatch with shrinkage.
The cooling condition is also one of the important factors in the bag-making process. If the deformed zipper can be sufficiently cooled before the bag-making process is completed, the composite film that has completed the bag-making process will continue to shrink under storage conditions. possibility will be greatly reduced.
If the heat-sealing layer and zipper in the composite film bag that has been processed into the bag are still in a molten state or viscoelastic state, then, under storage conditions, the heat-sealing layer and the zipper must undergo some degree of thermal shrinkage. Then a corresponding degree of surface wrinkling occurs. Therefore, the surface temperature of the bag making machine cooling has become one of the important factors affecting the appearance quality of the composite packaging bag.
Read recommendations:
Hot Sale BPA Free Plastic Drink Juice Fruit Liquid Packaging Stand Up Bag Spout Pouch
new Bag-in-bag machine purchased in 2023
Introduce the materials for making plastic packaging bags.reusable Snack food bag wholesale
Popular recommendation
Eco Friendly Plastic Mylar Pouch Stand Up 50ml 100ml 200ml 250ml Custom Aluminum Spout Pouch
China Factory Baby Complementary Food Spout Pouch Baby Food Fruit Puree Bag With Spout Packaging Bag
Kraft paper pouch
packaging spout pouch supplier
coffee scrub pouch price
bag in box Vendor
biodegradable spout pouches wholesale
super pouch tool bag wholesale
mini Snack food bag Manufacturing
kraft paper spout pouch wholesaler
Bag-in-Box with Tap: The Innovative Solution for Efficient Liquid Packaging
Classification and material of packaging bags
How to choose pet food packaging bags?
Several common coffee bag materials
Understand the wholesale prices of plastic packaging bags
The printing principle of composite bags.eco friendly spout pouches custom
Material of liquid bag
What are the aspects of food packaging?reusable Snack food bag Manufacturing
What equipment is needed to produce plastic packaging bags
What should be paid attention to in the customized production of rice packaging bags.super pouch too
Tell you how to detect aluminum foil adhesive coating.aluminium foil coffee bag
What are the bag materials
Talk about the advantages and applications of Spout Poubs
The structure of Spout POUCHES
Analyzing the Factors Influencing the Yield of Fruit Juice Bags.drink pouches with spout
North India's cowhide paper bag customization allows you to worry about it
Why is the cooking bag called "soft can"? What are its advantages and characteristics
And there are already four types of uses for high-temperature cooking bags alone
Development of Packaging Industry.bag in box packaging
What kind of bacteria is flatulence in food packaging bags generally?mylar bags custom printed