High-performance shrinkage film and preparation method thereof
A shrink film, high-performance technology, applied in the field of packaging film, can solve the problems of the shrinking furnace temperature is not too high, the shrinkage rate is not high, the shrinkage effect is not good, etc., to achieve the effect of fast shrinkage, high transparency and high sealing strength
Inactive Publication Date: 2019-05-21
深圳市致新包装有限公司
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Abstract
The invention discloses a high-performance shrinkage film and a preparation method thereof. The invention adopts the preparation method of biaxial stretching into a whole after five layers of co-extrusion. The prepared shrinkage film comprises a first layer, a second layer, a third layer, a fourth layer and a fifth layer which are sequentially arranged; the first layer is an outer surface layer; the second layer, the third layer and the fourth layer are three inner layers; the fifth layer is an inner surface layer; the weight ratio of the outer surface layer to the inner surface layer is 1:1;the outer surface layer and the inner surface layer totally comprise 30 parts by weight of polypropylene and 5 parts by weight of aid; the inner three layers comprise 30-65 parts by weight of linear low-density polyethylene and 0-35 parts by weight of ultralow-density polyethylene; the linear low-density polyethylene and the ultralow-density polyethylene totally are 65 parts by weight. The shrinkage film has good shrinkage rate and thermal slip performance and high transparency, can reach 70 percent of shrinkage ratio at a temperature of 130 DEG C, and is high in shrinkage speed, high in tearing strength and high in sealing strength.
Application Domain
Synthetic resin layered products
Technology Topic
PolypropyleneLow-density polyethylene +5
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