Structure of aluminum foil cooking bag

Aluminum foil cooking bag is often called "soft can". It is a composite plastic film bag that can be heated. Do you know its structure?

According to the manufacturer of aluminum foil cooking bag, its structure is composed of three layers:

1. The surface printing layer is PET polyester - PET film has good transparency, low haze, odorless, tasteless, colorless and non-toxic; It has good mechanical properties, strong rigidity, good stiffness, good tensile strength, good thickness uniformity, and is conducive to printing; It has good air tightness, general water resistance and good fragrance retention; It has excellent high and low temperature resistance, can withstand most acids and alkalis, oil resistance, but not strong alkalis.

2. The middle layer is AL aluminum foil - the appearance of AL aluminum foil is silvery and opaque, with strong reflectivity and soft texture; It is colorless, tasteless, odorless and non-toxic; It is a very thin material. The thickness of composite is only 7 wires. Although its density is very light because of its thin; It has strong adaptability to temperature, heat resistance, cold resistance, and will not easily deform in high and low temperatures; It has a high barrier, excellent moisture and gas resistance, oil resistance, excellent shading, heat sealing and printing.

3. The inner layer is PE polyethylene - PE film is not very transparent and foggy. It is odorless, tasteless, colorless and non-toxic; Its mechanical strength is relatively low, the thickness error is relatively large, and it is easy to stretch, so it is not conducive to printing multi-color and accurate positioning; Because of its good heat sealing, water resistance, acid and alkali resistance, it is usually used as the heat sealing layer inside the composite material to directly contact the product.

Jiangsu Gengda Packaging Co., Ltd. is a professional manufacturer of aluminum foil bags. The company has rich experience in the production of composite flexible packaging. Its products are widely used in the packaging of food, medicine, daily chemical, chemical, military, electronic instruments and meters, and the quality has been recognized and affirmed by customers.