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    • 7. 发明申请
    • MULTILAYERED ALIPHATIC POLYESTER FILM
    • 多层聚酰胺薄膜
    • US20100055428A1
    • 2010-03-04
    • US12521841
    • 2008-01-03
    • Kyung-Youn KimSang-II Kim
    • Kyung-Youn KimSang-II Kim
    • B32B7/02B32B27/36
    • C08J5/18C08J2331/00Y10T428/2495Y10T428/31786
    • A multilayered aliphatic polyester film of the present invention comprising a first resin layer and a second resin layer laminated on one or both sides of the first resin layer, the first resin layer containing a polylactic-based polymer comprising L-lactic acid in an amount ranging from 50 to 100% by weight, and the second resin layer containing a polylactic-based polymer comprising D-lactic acid in an amount ranging from 5 to 20% by weight, can be easily peeled off by pulling with hands, and has improved heat adhesiveness, heat resistance, transparency, impact resistance, perforation resistance and dimensional stability. Accordingly, it is useful for packaging materials, especially as a disposable film lid for plastic containers.
    • 本发明的多层脂肪族聚酯膜包含层叠在第一树脂层的一面或两面上的第一树脂层和第二树脂层,所述第一树脂层含有包含L-乳酸的聚乳酸类聚合物, 50〜100重量%,含有以重量计5〜20重量%的D-乳酸的聚乳酸类聚合物的第2树脂层可以用手牵拉而容易地剥离,热量提高 粘合性,耐热性,透明性,耐冲击性,耐穿孔性和尺寸稳定性。 因此,对于包装材料,特别是作为塑料容器的一次性膜盖是有用的。