Several technical points that must be paid attention to in dry composite
Release time:
2021-02-16
Dry composite is suitable for a variety of composite film substrates such as plastic, paper and metal aluminum, etc., with a wide range of applications; excellent resistance to chemical medium erosion, such as alkali, acid, spicy, grease and other ingredients in food, essence in cosmetics, emulsifier and other ingredients
Dry composite is suitable for a variety of composite film substrates such as plastics, paper and metal aluminum, etc., and has a wide range of applications. Excellent resistance to chemical medium erosion, such as alkali, acid, spicy, grease and other ingredients in food, essence, emulsifier and other ingredients in cosmetics, solvents and pesticide ingredients of chemicals, it is widely used in packaging with harsh content conditions, and has comprehensive multi-functional packaging requirements that are difficult to achieve by other composite processes, in particular, high-temperature retort bags with resistance to more than 121 degrees Celsius have more advantages; high composite strength, good stability, and good product transparency. It can produce high and low-grade composite films, and can produce freezing, heat preservation or high temperature Sterilized composite film; convenient and flexible to use, simple to operate, suitable for the production of multiple varieties. There are many details in the actual production process of this production process, and these details cannot be ignored by manufacturers, so what are the common problems?
1. The choice of glue
In the dry composite operation, glue mixing is a common bad operation. Choose the correct glue model, the ratio is accurate, the mixing is uniform, and avoid waste and the risk of production loss.
2. Proportion of curing agent
Increasing the proportion of curing agent is to compensate for the consumption of curing agent by moisture during the compounding process; reducing the proportion of curing agent is to reduce the hardness of the adhesive layer and slow down the degree of migration of the aluminum layer.
3. Adjust the concentration of glue
The glue working concentration is different, so the amount of glue will be different. The adjustment of the working concentration of glue has a certain range and cannot exceed the allowable working concentration.
4. Proportion of curing agent
Increasing the proportion of curing agent is to compensate for the consumption of curing agent by moisture during the compounding process.
5. Control of drying conditions
The setting of drying temperature should be adjusted according to the type of film, working concentration, gluing amount, machine speed, environmental conditions, etc.
Yi Hai Packaging has been engaged in the flexible packaging industry for many years and has accumulated rich experience in plastic packaging compounding. The production system is strict and the production process is rigorous, providing customers with high-quality packaging products.
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