High-transparency polytene thermocontracted film and producing method thereof
A high-transparency, heat-shrinkable film technology, applied in the field of packaging materials and plastic products, can solve the problems of affecting the quality of drinks or beer in the bottle, affecting the appearance of PVC labels outside the bottle, and the effect is not bright, so as to ensure weight and stability performance, and the effect of improving transparency
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[0027] Example 1,
[0028] High-transparency polyethylene heat-shrinkable film, which is compounded by a mixture consisting of metallocene LDPE (low density polyethylene), linear LDPE, LDPE and additives, stirred and mixed uniformly by a mixer, and the mixture is extruded through an extruder and blow molded Molded.
Example Embodiment
[0029] Example 2,
[0030] Such as the high transparency polyethylene heat shrinkable film of Example 1, but the proportion of each component of the compounding mixture is: 4-6 parts by weight of metallocene LDPE, 1-2 parts by weight of linear LDPE, 2-3 parts by weight of LDPE, The auxiliary agent is 0.2-0.4 parts by weight.
[0031] The auxiliary agent may include a lubricant, a plasticizer, and may also include talc or diatomaceous earth.
Example Embodiment
[0032] Example 3.
[0033] Such as the high transparency polyethylene heat shrinkable film of Examples 1 and 2, but the lubricant can be stearic acid or metal salts of stearic acid, such as calcium stearate, magnesium stearate and barium stearate, etc. The plasticizer can be a polyhydric alcohol, such as propylene glycol, glycerol, pentaerythritol, sorbitol or their incomplete esterification products with long-chain fatty acids such as glycerol monostearate.
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