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发明公开
CN103879112A 塑料复合软包装用聚乙烯薄膜及其吹塑方法 有权

塑料复合软包装用聚乙烯薄膜及其吹塑方法
摘要：
本发明公开了一种塑料复合软包装用聚乙烯薄膜及其工艺，聚乙烯薄膜的配方为：内层含的原料及其重量百分比为LDPE5%～60%，LLDPE15%～70%，mLLDPE10%～30%，爽滑开口剂0.1%～0.5%，脱模剂0.3%～0.5%；中层的原料及其重量百分为LDPE5%～60%，LLDPE15%～70%；mLLDPE0～30%，脱模剂0.3%～0.5%；外层的原料及其重量百分比为LDPE5%～60%，LLDPE15%～70%，mLLDPE0～30%，脱模剂0.3%～0.5%。采用本方案的配方及工艺制备的聚乙烯薄膜的韧性、拉伸强度、耐冲击性、耐穿刺性得到了大幅度地提高。
摘要（英）：

The invention discloses a polyethylene film for a plastic compound flexible package and a process thereof. The formula of the polyethylene film is as follows: an inner layer of the polyethylene film comprises the following raw materials in percent by weight: 5-60 percent of LDPE (Low-Density Polyethylene), 15-70 percent of LLDPE (Linear Low Density Polyethylene), 10-30 percent of mLLDPE (metallocene Linear Low Density Polyethylene), 0.1-0.5 percent of smooth opening agent, and 0.3-0.5 percent of a demoulding agent; a middle layer of the polyethylene film comprises the following raw materials in percent by weight: 5-60 percent of LDPE, 15-70 percent of LLDPE, 0-30 percent of mLLDPE and 0.3-0.5 percent of demoulding agent; an outer layer of the polyethylene film comprises the following raw materials in percent by weight: 5-60 percent of LDPE, 15-70 percent of LLDPE, 0-30 percent of mLLDPE and 0.3-0.5 percent of demoulding agent. According to the polyethylene film prepared by adopting the formula and the process of the scheme, the flexibility, the tensile strength, the impact resistance and the puncture resistance are greatly improved.

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