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1. 发明授权

US4403710A Easily-openable heat seal lid 失效
标题翻译：易于开启的热封盖
公开(公告)号：US4403710A
公开(公告)日：1983-09-13
申请号：US376949
申请日：1982-05-11
申请人： Kazumi Hirota , Yotaro Tsutsumi , Senji Ito , Tadahiko Katsura , Kikuo Matsuoka , Ichiro Hori
发明人： Kazumi Hirota , Yotaro Tsutsumi , Senji Ito , Tadahiko Katsura , Kikuo Matsuoka , Ichiro Hori
IPC分类号： B21D51/38 , B32B15/08 , B65D17/28 , B65D17/34
CPC分类号： B21D51/44 , B21D51/383 , B32B15/08 , B65D17/24
摘要： Disclosed is an easily openable heat seal lid for sealing a vessel proper by forming a heat-sealed portion between the lid and the vessel proper, which comprises a laminate comprising at least an inner face member composed of a thermoplastic resin and a metal foil, wherein scores defining a portion to be opened are formed on the side inner than the portion to be heat-sealed so that the scores extend to the midway of the thickness direction of the metal foil, and said inner face member comprises at least one heat-sealable thermoplastic resin layer having an adhesion strength of at least 800 g/15 mm to the metal foil, a tear strength lower than 3.0 kg and a tensile modulus of at least 300 kg/cm.sup.2. In this heat seal lid, the resin layer can be broken sharply along the scores and opening can be accomplished very easily.
摘要翻译：公开了一种用于通过在盖和容器本体之间形成热密封部分来适当地密封容器的容易打开的热封盖，其包括至少包括由热塑性树脂和金属箔构成的内表面构件的层压体，其中在要被热封的部分的内侧形成限定要打开的部分的分数，使得分数延伸到金属箔的厚度方向的中间，并且所述内表面构件包括至少一个可热封对金属箔具有至少800g / 15mm的粘合强度，低于3.0kg的撕裂强度和至少300kg / cm 2的拉伸模量的热塑性树脂层。在这种热封盖中，树脂层可以沿着分数急剧破裂，开口可以非常容易地实现。

2. 发明授权

US4310578A Retort-sterilizable laminated structure and process for preparation thereof 失效
标题翻译：蒸煮消毒层压结构及其制备方法
公开(公告)号：US4310578A
公开(公告)日：1982-01-12
申请号：US55004
申请日：1979-07-05
申请人： Tadahiko Katsura , Kenji Suzuki , Senji Ito
发明人： Tadahiko Katsura , Kenji Suzuki , Senji Ito
IPC分类号： B32B15/08
CPC分类号： B32B15/08 , Y10T428/1338 , Y10T428/2826 , Y10T428/31681 , Y10T428/31692 , Y10T428/31913
摘要： Disclosed is a retort-sterilizable laminated structure comprising an aluminum foil or sheet, a heat-sealable crystalline propylene type resin layer formed on one surface of the aluminum foil or sheet and a heat-resistant resin layer formed on the other surface of the aluminum foil or sheet, wherein the aluminum foil or sheet is heat-fusion-bonded to said crystalline propylene type resin layer through a layer of a modified olefin resin having a degree of crystallization of 15 to 95% and a carbonyl group concentration of 1 to 600 meq/100 g of the polymer, in which the majority of the structural olefin units are propylene units and the minority of the structural olefin units are ethylene units.As the modified olefin polymer, a modified ethylene-propylene copolymer or a blend of a modified propylene type polymer with an ethylene type polymer is preferably employed.
摘要翻译：公开了一种包括铝箔或片材的蒸煮灭菌叠层结构，形成在铝箔或片材的一个表面上的可热封的结晶丙烯类树脂层和形成在铝箔的另一个表面上的耐热树脂层或片材，其中铝箔或片材通过结晶度为15〜95％，羰基浓度为1〜600meq的改性烯烃树脂层与所述结晶丙烯类树脂层热熔接合 / 100g聚合物，其中大部分结构烯烃单元是丙烯单元，少数结构烯烃单元是乙烯单元。作为改性烯烃聚合物，优选使用改性乙烯 - 丙烯共聚物或改性丙烯类聚合物与乙烯类聚合物的共混物。

3. 发明授权

US4291085A Packaging material for food to be subjected to high-temperature short-time sterilization and process for the preparation thereof 失效
标题翻译：用于进行高温短时间灭菌的食品的包装材料及其制备方法
公开(公告)号：US4291085A
公开(公告)日：1981-09-22
申请号：US682908
申请日：1976-05-04
申请人： Senji Ito , Kenji Suzuki
发明人： Senji Ito , Kenji Suzuki
IPC分类号： B32B27/00 , B65D75/26 , B65D65/40
CPC分类号： B32B27/00 , B65D75/26 , Y10T428/24967 , Y10T428/31507 , Y10T428/31681 , Y10T428/31692 , Y10T428/31743 , Y10T428/31797 , Y10T428/31855 , Y10T428/31913
摘要： A packaging material for food to be subjected to high-temperature short-time sterilization, which comprises a flexible laminate sheet including (a) a heat-sealable inner face layer of a crystalline polypropylene, (b) an outer face layer of a thermoplastic or thermosetting resin having a melting point or decomposition point higher than the melting point of said polypropylene and, if desired, (c) an oxygen-barrier layer interposed between said layers (a) and (b), said polypropylene layer being composed of a film of a polypropylene having a melt flow index of 0.5 to 3, said film being characterized in that (i) when the film is extracted in salad oil at 130.degree. C. for 30 minutes, the amount extracted of the polypropylene is smaller than 1500 ppm, (ii) the polypropylene film has a pseudohexagonal crystal form or a crystal form of a combination of the pseudohexagonal system and .alpha.-monoclinic system and a degree of orientation not higher than 3.0 and (iii) the surface of the polypropylene film confronting the layer (b) has a tension in the wet state (wetting tension T.sub.1) of at least 38 dyne/cm when it is allowed to stand still in an atmosphere of a temperature of 20.degree. C. and a relative humidity of 40% for 1 week.
摘要翻译：一种用于经受高温短时间灭菌的食品的包装材料，其包括柔性层压片，其包括（a）可热封的结晶聚丙烯内表面层，（b）热塑性塑料的外表面层或具有高于所述聚丙烯的熔点或分解点的热固性树脂，如果需要，（c）介于所述层（a）和（b）之间的氧阻隔层，所述聚丙烯层由薄膜的熔体流动指数为0.5至3的聚丙烯，所述薄膜的特征在于（i）当在130℃的色拉油中提取薄膜30分钟时，聚丙烯提取的量小于1500ppm ，（ii）聚丙烯薄膜具有拟六边形晶体形式或拟六边形体系和α-单斜晶系的组合的结晶形式，取向度不高于3.0，（iii）聚丙烯的表面面对层（b）的薄膜在20℃的温度和相对湿度为40的气氛中静置时，具有至少38达因/厘米的湿润状态（润湿张力T1）的张力％1周。

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