Why does the aluminum foil bag delaminate?

Aluminum foil bag manufacturer Weihua packaging Xiaobian today and you a simple analysis of the main reasons for delamination analysis.

A) Ink or glue in the operation of the problem, there are three reasons:

1. The dosage of curing agent does not meet the requirements.

2, ink or glue activity is not enough or mixed with more expired failure residues.

3, the curing time can not meet the requirements, the short time is insufficient crosslinking, the ink layer temperature resistance, hydrolysis resistance is reduced.

B) The heat resistance of ink or glue is not good enough resulting in insufficient viscosity strength. At this level, it is because of the selection of product materials. For example, it may be insufficient temperature resistance of ink and glue.

C) This reason may also be the main reason, that is, the mismatch between the ink, glue and film, which is also the adaptability between the materials. Improper selection of adhesive type may lead to poor adhesion fastness after printing, compounding and curing, so it will also cause delamination.

So why is there no problem with the PA and aluminum foil in the inner layer? It is because the glue layer in the inner layer is protected by the aluminum foil layer and is less eroded by water.

If you want to know more about the price of high temperature cooking bags, you can consult aluminum foil bag manufacturer Weihua Packaging in detail.