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The characteristics and application of composite packaging bag

source:Industry News release time:2022-10-27 Hits:    


  Composite packaging bag in the field of packaging status has been irreplaceable, this kind of packaging through the plastic film, aluminum foil, paper and other properties of the base material rolling composite processing of packaging materials, once used, will quickly replace the traditional packaging position.

  The bag that comes into contact every day is so much, know its action after all and characteristic, safety how? Xiaobian today to explain the characteristics and application of common composite packaging bags.

  1, the characteristics of composite bag

  Composite packaging bag is a flexible packaging material formed by two or more different properties of the material composite, so as to form a new high performance packaging can give full play to the advantages of each component material. It can collect the advantages of each layer of film, overcome their shortcomings, composite can obtain more ideal packaging materials, can meet the requirements of a variety of products.

  With the progress of material processing technology, now the composite packaging bag variety, different performance, compared with other packaging materials, its main characteristics are as follows:

  1. Light, transparent and soft;

  2. Good air tightness and heat sealing;

  3. Can moisture-proof, air-proof, anti-ultraviolet, heat resistance, cold resistance performance;

  4. It has good dimensional stability, stable chemical properties, excellent chemical resistance and grease resistance;

  5. Tear resistance, needle resistance, fatigue resistance, impact resistance, friction resistance and aging resistance;

  6. Excellent machining adaptability.

  Composite packaging bag with light quality, soft, less waste, easy processing molding, small space, low cost and cost effectiveness (volume and weight per unit weight packaging) high advantages, can meet the needs of most commodities -- especially clothing, hardware, food packaging needs.

  2, the application of composite packaging bags

  Composite packaging bags are mainly used for the packaging of clothing, hardware, food, medicine, cosmetics, beverages and other products. In recent years, the global demand for composite packaging bags has been maintaining a rapid development. Composite packaging bag can be used by a wide variety of substrate, commonly used substrate are: High density, medium density, low density polyethylene film (HDPE, MDPE, LDPE), stretched and unstretched polypropylene film (BOPP, CPP), polyester film (PET), polyvinyl chloride film (PVC), polyvinylidene chloride film (PVDC), nylon film (NY), etc.

  Common types of composite packaging bags are: paper/plastic composite, plastic/plastic composite, aluminum/plastic composite, etc. The number of composite substrate layers can be two layers, three layers, four layers, five layers or more. According to the type and thickness of the composite plastic film substrate, the number of layers and sequence of the combination, and the method of composite, can constitute many kinds of composite packaging bags.

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