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A process for the preparation of uniaxially oriented, filler containing films for packaging in a controlled atmosphere
A process for the preparation of uniaxially oriented, filler containing films for packaging in a controlled atmosphere
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机译:制备用于在受控气氛下包装的单轴取向的含填料薄膜的方法
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摘要
ANTOON CASE No. 2UNIAXIALlY ORIENTED FILLED FILMSFOR CONTROLLED ATMOSPHERE PACKAGINGAbstract of the DisclosureA uniaxially oriented, polyolefin film is prepared bymelt blending a mixture of a polyolefin, an inert filler, anda processing aid such as calcium stearate, maintaining themoisture level in the melt blend below 700 ppm, casting afilm, and uniaxially stretching the film at least about 2times its original casting dimension in one direction untilthe film has a sufficient number of elongated, microporousvoids in order to create a CO2 and 02 permeance in therange of 5,000 to 10,000,000 cc/1002-atm-day, the a filmbeing used as a panel in a side of a controlled atmospherepackaging container that is otherwise substantially gasimpermeable.
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机译:ANTOON案例2单轴定向电影用于可控气氛包装披露摘要通过以下方法制备单轴取向的聚烯烃膜:熔融共混聚烯烃,惰性填料和加工助剂,例如硬脂酸钙,保持熔体混合物中的水分含量低于700 ppm,铸造膜,并单轴拉伸至少约2在一个方向上乘以原始铸造尺寸,直到薄膜有足够数量的拉长的微孔空隙,以便在每天5,000至10,000,000 cc / 1002-atm的范围在可控气氛的一侧用作面板包装容器,否则基本上是气体不可渗透的。
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