Aluminum coating is a thin aluminum layer (about 300nm) vacuum evaporated on the substrate. Generally, it is not used in cooking sterilization bags. The aluminum foil bag directly uses pure aluminum foil base material, and its performance is relatively perfect.
Classification of aluminized bags:
Yin Yang bag: one side is made of transparent composite material, and the other side is made of aluminized material, with silver white appearance and bright surface.
Light aluminum foil bag: aluminum plated material, silver white appearance, bright surface.
Matte aluminum foil bag: aluminum plated material, silver white in appearance, Matt on surface.
Matte gold foil bag: aluminum plated material, dark gold appearance, dull surface, black and matte surface.
The aluminum foil bag is made of pure aluminum. It is silver white (porcelain white) in appearance, with glossy surface and a sense of texture.
Difference between aluminum foil bag and aluminum plated bag:
In terms of materials, aluminum foil bags are of high purity and aluminized with composite materials;
In terms of cost, the price of aluminum foil bag is higher than that of aluminum plating;
In terms of performance, the moisture-proof and temperature reduction of aluminum foil bag is better than that of aluminum plating. The aluminum foil bag is completely protected from light, and aluminum plating also has shading effect;
In terms of use, aluminum foil bags are more suitable for electronic components, cooked food, meat, etc. with high requirements for moisture resistance and vacuum pumping. Aluminum plating is suitable for tea, powder, electronic components, etc;
How to make aluminized composite packaging?
1. Choose the right glue
Select appropriate VMCPP, VMPET and other special glue for aluminized film lamination. VMCPP and VMPET from different manufacturers have great differences after lamination.
2. Process
1) The temperature of the oven and the composite roller is reduced by 5-10 ℃ respectively;
2) The temperature of curing chamber shall not exceed 45 ℃;
3) Pet/vmpet/pe (CPP) is compounded for the first time, cured for 1-2 hours, and then compounded for the second time;
4) If the air is dry, reduce the curing dose by 10%.
How to make aluminum foil bags?
1. Selection of framing
The more the splicing, the lower the cost. Selecting the appropriate specification according to the equipment situation can greatly reduce the loss.
2. Process
1) The gluing amount is about 1.5 times that of white film. When the printing is full or the printing area is large, the gluing amount shall be further expanded.
2) After the first time of compounding and curing for 13 hours, the second time of compounding shall be carried out, and the product shall be cured for 72 hours.
3) The aluminum foil does not pass through the flattening roll, but enters the compound roll.
4) Tension control.
5) The temperature of oven and composite roller shall be increased as much as possible.
To sum up, it is necessary to judge whether the aluminum foil bag or the aluminum plated bag is better, or to comprehensively consider the product packaging, high-temperature cooking and other aspects according to your own budget.
Yutwin Alum provides variety of professional food grade aluminum foil such as 3003 Aluminum Foil, 1060 Aluminum Foil, 8006 Aluminum Foil. We support customers to customize according to their needs, welcome to contact us for quotation.
Post time: Jun-21-2022