The composite packaging bag takes a typical three-layer structure composite flexible packaging material as an example. The function and requirements of the outer substrate (surface layer) are shown in the following tableThe role of the outer substrateRequireeffectMechanical strengthTensile, tear-resistant, impact-resistant, friction-resistantBarrierMoisture proof, gas barrier, fragrance retention, UV protectionstabilityLight resistance, oil resistance, organic resistance, heat resistance, […]

1. Classification of packaging bag compounding process:At present, composite materials for packaging bags are classified according to processing methods, mainly as follows:①Dry coating organic solvent adhesive compound packaging bag material②Wet coating inorganic adhesive composite packaging bag material③Extrusion film laminated composite packaging bag material④Multilayer co-extrusion composite packaging bag material⑤Hot solvent coating composite packaging bag material⑥Solvent-free composite […]

1. The type, thickness and quality of the heat seal material have the most direct influence on the heat seal strength. Common heat sealing materials for composite packaging include CEP, LPPE, CPP, OPP, EVA, hot melt adhesive and other ion-exchange resin coextrusion or blending modified films. The thickness of heat seal material is generally 20-80 […]

The main components of the composite packaging bag are made of various plastic materials, most of which are PE, PA, PET, BOPP, YOPP, CPP, etc. The molecular structure of these materials is tight, and it takes more than 100 years to fully degrade. time. The emergence of degradable materials seems to solve this problem. But […]

Composite packaging bags are made of a variety of raw materials, such as OPP, PE, composite film and so on. The process is very cumbersome. It goes through: ordering, engraving, printing, compounding, drying, bag cutting, quality inspection, warehousing, and delivery. Composite packaging bag bag shape: side seal, bottom seal, middle seal, three-side seal, eight-side seal, […]

The self-supporting composite packaging bag is the first to use the self-supporting composite bag for sale, which has a good sale effect and is easy to use. Compared with stand-up bags such as four-side sealing and eight-side sealing, stand-up bags have the advantage of being easy to use. Tea packaging bags, aluminum foil bags, plastic […]

In daily life, the demand for composite packaging bags is very large. For food factories, the composite packaging bags used come from different businesses, enterprises or factories. For merchants, the composite packaging bag can be directly customized by the manufacturer, and only in this way can reduce the procurement cost to the greatest extent. Many […]