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    • 2. 发明授权
    • Process for production of easy-open can lid made of resin laminated metal sheet, easy-open can lid, and resin laminated metal sheet for easy-open can lid
    • 生产容易开罐的盖子由树脂层压金属板制成,易开罐盖和树脂层压金属板易开罐盖
    • US07629038B1
    • 2009-12-08
    • US08295686
    • 1993-12-24
    • Hiroshi NishidaYashichi OyagiKiyonori Nakamura
    • Hiroshi NishidaYashichi OyagiKiyonori Nakamura
    • B32B15/09C08J5/18
    • B21D51/44B21D51/383Y10T428/24612Y10T428/269Y10T428/31681
    • A process for productive an easy-open can lid made of a resin laminated metal sheet comprising laminating a metal sheet or surface-treated metal sheet on one or both surfaces thereof with a crystalline saturated polyester resin film having a thickness of 10 to 100 μm, an elongation of at least 150%, a degree of crystallinity of not more than 10%, and a heat of fusion of crystalline of not less than 10 joules/g, to form a laminated metal sheet for an easy-open can, forming by a composite cold-forming method a tear-along grooves of a residual thickness of not more than ½ of the thickness of the material using top and bottom dies of a die radius of 0.1 to 1.0 mm, then heat treating the crystalline saturated polyester resin layer at the portion surrounding the tear-along groove at a temperature of at least the crystallization starting temperature and less than the melting point thereof and, also, an easy-open can lid obtained by the same and a resin laminated metal sheet used for the same.
    • 一种用于生产由树脂层压金属片制成的易开罐的盖的方法,包括在其一个或两个表面上层压金属片或表面处理的金属片与厚度为10至100μm的结晶饱和聚酯树脂膜, 至少150%的伸长率,不大于10%的结晶度和不小于10焦耳/克的结晶的熔化热,以形成易于打开的层压金属片,可以通过 复合冷成型方法,使用模具半径为0.1〜1.0mm的上下模具,残留厚度不大于材料厚度的1/2的撕裂槽,然后热处理结晶饱和聚酯树脂层 在至少结晶起始温度和小于其熔点的温度下,在撕裂槽周围的部分,以及由其获得的容易打开的罐盖和用于sam的树脂层压金属片 e。