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What are the main reasons for the delamination of composite packaging bags

Release time:

2021-07-21

Composite packaging bags can be seen everywhere in daily life. The packaging bags used for snacks, candies and biscuits in supermarkets are all packaged in composite bags. Many food manufacturers often experience bag separation when using composite bags. Today, the Xinrunlong packaging manufacturer will analyze why these bags appear to be separated.

One: Delamination caused by improper composite bag materials

Many manufacturers think that the materials of all bags are the same. In fact, this is not the case. The materials of the packaging bags are different for different characteristics of the products. Some products have high oil content, some products need high temperature treatment, and some products need low temperature. It is refrigerated, so delamination caused by incorrect selection of the material of the bag is very common.

Two: Layer separation caused by the failure of composite bag composite technology

Composite plastic bag is a packaging bag made by combining materials of more than two layers, we professionally call it: composite bag. These materials are glued together through a special process. If the technology is not good enough, the amount of glue used in the compounding process will affect the separation of the bag in the future.

Three: The maturation time is not enough after the compound bag is compounded

After the compound bag is compounded, it is necessary to put the compounded material in an environment with a constant temperature of 50 degrees for baking. The baking time must reach 48 hours. The purpose of baking is to bake the glue in the compounding process. In order to reduce the production time, some manufacturers take them out to make bags before they are baked. Such bags will surely delaminate after a period of time.

Zhizhao

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