Causes and solutions to the problem of insufficient stripping force of solventless composite film
On the phenomenon of insufficient peeling force
Characteristics: insufficient peeling strength of composite film, dry glue, easy delamination, etc.
Cause analysis: there are many reasons for the insufficient stripping force of solvent-free composite, such as wrong (or improper) glue mixing ratio at the operation level, insufficient glue amount, improper curing conditions, insufficient substrate corona value at the material level, improper selection of glue, deterioration of glue, insufficient adhesion of ink or aluminum coating, excessive residual solvent of printing film (printing ink is not dry), etc It may lead to this phenomenon.
Solution: in view of the diversity of the causes of the phenomenon, there are various ways to deal with it, but if we can do the following, the probability of the phenomenon will be much less.
1. Ensure that the corona value of the composite substrate meets the requirements;
2. Ensure that the adhesive used is within the shelf life and kept or used according to the manufacturer's specification;
3. Ensure that the automatic mixing machine is in good condition, and regular calibration to ensure accurate mixing and uniform mixing;
4. Make sure that the ink on the printing substrate has enough adhesion, and the aluminum coating on the aluminum coating has enough adhesion;
5. Determine the amount of glue to meet the requirements of peel strength (determined in the process test), and glue according to the requirements;
6. Ensure that the composite equipment and auxiliary facilities are in good condition and the operators operate according to the specification requirements;
7. Ensure open and regular interaction with suppliers of glue, ink, substrate, equipment, etc.
Dongguan Beite packaging materials Co., Ltd. - located in Dongguan City, the world's manufacturing city, is a subsidiary of Beite packaging (China) Co., Ltd., with a plant area of 6000 square meters. It is a flexible packaging enterprise integrating R & D, production and sales. It has a complete set of domestic advanced production equipment, a scientific and humanized management system and a group of experienced technical personnel For backing, to provide customers with quality products and first-class service.
The company produces composite bags, roll film, fruit bags, aluminum foil bags, suction mouth bags, self-supporting bags, zipper bags, anti-static bags, special-shaped bags, etc., which are suitable for the internal and external packaging of food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products and other industries.
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