In order to meet the required packaging requirements, the composite packaging film should have the following properties:
1, Â Mechanical behavior
Tensile strength, rigidity, wear resistance, sealing, elongation friction, etc.
2, Â Physical and chemical properties
Barriers to oxygen and moisture, fragrance retention, oil resistance, chemical resistance, light protection, etc.
3. Â Durability
Performance in low and high temperature environments, stability in high temperature conditions, ability to explain, etc.
4. Â Workability
Suitable for printing, convenient for automatic packaging, anti-static, heat shrinking ability, etc.
5. Â Product display
Transparency, whiteness, glossiness, easy opening, easy disposal of waste, etc.
For example, the preservation requirements, packaging operation requirements, safety and hygiene requirements, sales shelf display requirements, and economic requirements are all issues that must be considered in the design of composite flexible packaging. For different packaging contents, we need to further deepen, Refine thinking.
Various products have different requirements for composite packaging films, and the common ones are as follows:
[1] Â General industrial product packaging: Mainly consider protection, packaging workability, sales commodity, transportation, etc.
[2] Packaging of daily chemical products: Most of them are directly facing consumers, and their protection, beauty, convenience, shelf display, etc. need to be considered.
[3] Packaging of electronic products: the protection, shock resistance, antistatic, shielding and barrier properties should be considered.
[4] Food and drug packaging: Consider its hygienic safety, barrier, packaging, shelf display, etc. Food packaging is the main object of use in composite packaging films. There are many types and different requirements. From raw to cooked, from low temperature to high temperature, from vacuum to inflatable packaging, almost all ranges of composite packaging films are covered.
[5] Packaging of mechanical parts: its protection, functionality, rust resistance, transportation, etc. should be considered.
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