发明名称 |
EASILY-OPENABLE HEAT SEAL LID |
摘要 |
<p>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/cm2. In this heat seal lid, the resin layer can be broken sharply along the scores and opening can be accomplished very easily.</p> |
申请公布号 |
CA1172181(A) |
申请公布日期 |
1984.08.07 |
申请号 |
CA19820402785 |
申请日期 |
1982.05.12 |
申请人 |
TOYO SEIKAN KAISHA, LTD. |
发明人 |
HIROTA, KAZUMI;TSUTSUMI, YOTARO;ITO, SENJI;KATSURA, TADAHIKO;MATSUOKA, KIKUO;HORI, ICHIRO |
分类号 |
B21D51/38;B32B15/08;B65D17/28;B65D17/34;(IPC1-7):B65D17/34 |
主分类号 |
B21D51/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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