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A coextruded Multilayer Film substrate for use in the packaging of fresh vegetables that can modulate the permeability of gases generated during the respiration of these fresh vegetables

机译:共挤多层膜基材,用于包装新鲜蔬菜,可以调节这些新鲜蔬菜呼吸期间产生的气体的渗透性

摘要

A coextruded Multilayer Film substrate for use in the packaging of fresh vegetables, which can modulate the permeability of gases generated during respiration of the fresh vegetables, wherein Said substrate comprises: a First Sealing Layer (2) is By at least 55% by weight of polyethylene at least 0,925 g / cm3 the difference being complemented with another Thermoplastic Polyethylene, with a significant number of short branches to not exceed more than 0.935 g / cm3; a second layer of core layer (3) formed by a Polymer Matrix comprising a Polymer forming pelu00edcul A,Where The Matrix polymer of the second layer core (3) is formed from 88% of Thermoplastic Polymer suitable Low degree of Branching and increased at 0940 g / cm3, the difference being structured by Thermoplastic polymer with significant number of short branches Up to 0.935 g / cm3, and a Third Layer (4) formed by at least 55% by weight of at least one polyethylene 0.925 g / cm3, the difference being complemented with another Thermoplastic Polyethylene, with a significant number of short branches to not exceed more than 0.935 g / cm3.
机译:用于新鲜蔬菜包装的共挤出多层膜基材,其可以调节新鲜蔬菜呼吸期间产生的气体的渗透性,其中所述基材包括:第一密封层(2)为至少55重量%。聚乙烯至少为0.925克/立方厘米,至少与另一种热塑性聚乙烯相辅相成,短支的数量不超过0.935克/立方厘米。第二层芯层(3)是由包括形成聚合物的聚合物A的聚合物基质形成的,其中第二层芯层(3)的基质聚合物由88%的合适的低支化度的热塑性聚合物形成并增加。在0940 g / cm3时,差异是由热塑性聚合物构成的,该聚合物具有大量的短支链,最高可达0.935 g / cm3,第三层(4)由至少55%的重量的至少一种聚乙烯0.925 g形成/ cm 3,区别在于另一种热塑性聚乙烯的补充,其短支链的数量不超过0.935 g / cm 3。

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