Easily-openable heat seal lid

Details Easily-openable heat seal lid Easily-openable heat seal lid

B - Operations, Transporting

65

D

190/143

B65D 17/34 (2006.01) B21D 51/38 (2006.01) B32B 15/08 (2006.01)

Patent

CA 1172181

Abstract of the Disclosure 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 com- posed 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.

402785

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