Cup cover film

The company is a manufacturer specializing in printing and producing composite aluminum foil packaging. Its products include: facial mask bags, food bags, detergent suction bags, pesticide bags, veterinary medicine bags, anti-static shielding bags and automatic packaging roll films. The product has high precision, rich layers, lifelike images, bright colors, low prices, and can be designed for free.
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The laminated structure of composite flexible packaging can be classified in many forms according to different combinations. However, conventional structures are usually distinguished by outer layer, middle layer, inner layer, adhesive layer, etc.

The requirements and functions of outer layer materials with good mechanical strength, heat resistance and printing are usually selected

Requirements and functions of interlayer materials

The key function of the inner material is sealing. The inner structure is in direct contact with the contents, so it is required to be non-toxic, tasteless, water-resistant and oil-resistant. The commonly used materials are cast polypropylene (CPP), ethylene vinyl acetate copolymer (EVA), polyethylene (PE) and its modified materials. The requirements and functions of inner layer materials are shown in the following table:

（4） Adhesive layer

An important indicator of the internal performance of materials. Different packaging requirements have different requirements for this indicator.

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