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

Composite packaging bags can be found everywhere in daily life. The packaging bags used to hold snacks, candy and biscuits in supermarkets are all packaged with composite plastic bags. Many food manufacturers often have the reason that the bags are separated into layers when using composite bags. Today, the Liyuanda manufacturer will help you analyze why these bags are separated from layers.

1： Separation caused by poor materials

Many manufacturers think that the materials of all bags are the same, but not the same. Different characteristics of products require different materials of packaging bags. Some products have high oil content, some products need high temperature treatment, and some products need low temperature refrigeration. The separation caused by incorrect selection of bag materials is very common.

2： Separation caused by failure of composite technology

Composite plastic bag is a kind of packaging bag made by combining more than two layers of materials together. Our professional name is composite bag. These materials are bonded together by special processes. If the technology is not up to standard, the more or less glue used in the process of composite will affect the separation of bags in the future.

3： Insufficient curing time after compounding

After the composite bag is compounded, the composite material needs to be baked in an environment with a constant temperature of 50 ℃. The baking time should reach 48 hours. The purpose of baking is to dry the glue in the composite process. In order to reduce the production time, some manufacturers take out the bags in advance before the time of baking, and such bags will be delaminated after a period of time.

The above points mentioned by the manufacturer of Liyuanda plastic packaging materials are the main reasons for the delamination of composite packaging bags. Therefore, when you select the manufacturer of composite bags, you must investigate and understand clearly, so as to avoid the impact of the delamination of the product during the use process on the product.