The performance of the composite packaging film and packaging requirements

Composite packaging film in order to meet the needs of packaging requirements, should have the following performance: A. Mechanical properties, tensile strength, rigidity, abrasion resistance, sealing, elongation, friction, etc. B。 Physical and chemical properties: blocking performance of moisture and oxygen, incense, oil resistance, resistance to chemical media, avoid light, etc. C。 Durability: used under low temperature, high temperature performance and stability under high moisture conditions, degradation ability, etc. D。 Nature: it is suitable for printing, automatic packaging, antistatic, thermal contraction ability, etc. E. Commodity display: transparency, whiteness, glossiness and open, waste ease of handling, etc. The requirement of the packaging for all kinds of products, the composite packaging film focus is different also, as follows: A. General industrial goods packaging, mainly considering its protective, packaging operation, sales, commercial, transportation, etc. B。 Cosmetic products packaging, are mostly directly to consumers, to consider its protective, beautiful sex, convenience, shelf display, etc. C。 Packaging machinery parts, to consider its protective, functional, rust, transportation, etc. D。 Packaging of electronic products, want to consider its protective, anti-shock, anti-static, block, block, etc. E. Food, pharmaceutical packaging, want to consider the protection, health, safety, barrier property, packing, etc. The outer base material ( Surface layer) Role and requirements of function requirement of mechanical tensile strength, tear resistance, impact resistance, resistance to friction block well protected against dampness, choke, incense, uv light stability, oil resistance, resistance to organic matter, heat-resistant, hardy processability friction, heat shrinkable curly health security is low, low odor, non-toxic other shiny, transparent, white degree, print two intermediary material requirements and tensile mechanical strength requirements, tensile and tearing resistance, impact resistance barrier property, choke, care sweet workability duplex strength other transparent, avoid light three photosensitive layer for requirements and role of tensile mechanical strength, tensile strength, tear resistance, impact resistance barrier property insurance, low adsorption light stability, oil resistance, resistance to organic matter, heat-resistant, hardy processability friction coefficient, thermal viscous resistance sealing pollution, non crimp health security is low, low odor, non-toxic other transparency, transparency, seepage control, easy to tear