Eco Friendly Heat Sealing Aluminum foil Jumbo rall
For raw and auxiliary materials
The original aluminum foil is the carrier of the adhesive layer, and its quality has a great influence on the heat seal strength of the product.
Especially the surface oil of the original aluminum foil will weaken the adhesion between the adhesive and the original aluminum foil.
If the surface of the original aluminum foil is oily and the surface tension is less than 31 × 10-3 μm, it is difficult to achieve the ideal heat seal strength. Therefore, the quality of the original aluminum foil must be strictly controlled.
In addition, during the production process, it was found that certain batches of raw aluminum foil with technical indicators that meet the requirements were coated with adhesives under all process conditions, but the heat seal strength of the final product failed to meet the requirements The reason is related to the insufficient metal composition and surface gloss of the original aluminum foil.
The research results show that by changing a special link to make full use of the original aluminum foil, the product has reached the ideal heat seal strength.
Non-toxic and pollution-free is one of the main requirements of aluminum foil, the surface is clean and free of oil, and the aluminum foil composition meets the requirements of food packaging standards. At present, the flexible packaging aluminum foil mainly uses industrial pure aluminum series such as 1235,1145,1100.
It is required that the rolling oil and related media used to produce this aluminum foil must not be toxic, meet food-grade hygiene standards, and have surface tension that meets the requirements to ensure composite bonding strength.
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