公开(公告)号：US08257822B2

公开(公告)日：2012-09-04

申请号：US12735686

申请日：2009-02-06

申请人： Mitsuo Kawata ,  Jun Birukawa ,  Kunihiko Takesue ,  Keita Itakura ,  Tokutaro Kimura

发明人： Mitsuo Kawata ,  Jun Birukawa ,  Kunihiko Takesue ,  Keita Itakura ,  Tokutaro Kimura

IPC分类号： B32B7/02 ,  B32B27/32

CPC分类号： C08F297/083 ,  B32B15/08 ,  B32B15/20 ,  B32B25/08 ,  B32B25/14 ,  B32B27/08 ,  B32B27/10 ,  B32B27/18 ,  B32B27/327 ,  B32B27/34 ,  B32B27/36 ,  B32B2264/10 ,  B32B2307/30 ,  B32B2307/306 ,  B32B2307/31 ,  B32B2307/412 ,  B32B2307/50 ,  B32B2307/546 ,  B32B2307/558 ,  B32B2439/70 ,  B32B2439/80 ,  Y10T428/2495 ,  Y10T428/31938

摘要： Provided is a film for thermal sterilization packaging which is excellent in a total balance of characteristics such a transparency, an impact resistance, a heat sealing property, a blocking resistance, a heat resistance and the like.The film for thermal sterilization packaging according to the present invention is characterized by comprising: an outer layer containing a propylene/ethylene block copolymer (A) which has a melt flow rate (MFR; ASTM D1238, 230° C., load: 2.16 kg) in the range of 1 to 10 g/10 minutes and a melting point in the range of 150 to 170° C. measured by means of a differential scanning colorimeter. (DSC) and which is constituted from 90 to 80% by weight of a part (Dinsol) insoluble in n-decane at room temperature satisfying the specific requisites and 10 to 20% by weight of a part (Dsol) soluble in n-decane at room temperature satisfying the specific requisites and an intermediate layer or an outer layer containing a propylene/ethylene block copolymer (B) which is not the same as the above propylene/ethylene block copolymer (A).

摘要翻译： 本发明提供一种热敏杀菌包装用膜，其透明性，耐冲击性，热封性，耐粘连性，耐热性等特性的总体平衡优异。 根据本发明的用于加热灭菌包装的薄膜的特征在于包括：含有丙烯/乙烯嵌段共聚物（A）的外层，其具有熔体流动速率（MFR; ASTM D1238,230℃，载荷2.16kg ）在1至10g / 10分钟的范围内，并且通过差示扫描色度计测量在150至170℃范围内的熔点。 （DSC），其由在室温下不溶于正癸烷的部分（Dinsol）90〜80重量％构成，满足特定要求，10〜20重量％的可溶于正癸烷的部分（Dsol） 满足特定要求的室温和含有与上述丙烯/乙烯嵌段共聚物（A）不同的丙烯/乙烯嵌段共聚物（B）的中间层或外层。