Liner-provided cap and cap-provided threaded container

Abstract

The present invention discloses a liner-provided cap and a cap-provided threaded container. The liner-provided cap for sealing the mouthpiece of the threaded container includes the cap shell (4) consisting of the top plate (2) and the tubular peripheral wall section (3) that hangs from the peripheral edge of the top plate (2), and the synthetic resin liner (5) provided on the inner surface of the top plate (2). The liner (5) includes the disk-shaped rigid sheet (5a) disposed in contact with the inner surface of the top plate (2), and the soft layer (5b) that is laminated to the rigid sheet (5a) and is more flexible than the rigid sheet (5a). The soft layer (5b) is concentric with the rigid sheet (5a) and is formed in an annular or disk shape with a diameter smaller than that of the rigid sheet (5a) so that the soft layer (5b) can be brought into contact with at least the mouthpiece.

Description

technical field

[0001] The present invention relates to a bottle cap with a gasket and a threaded container with a bottle cap which are excellent in unsealing performance, sealing performance, gasket installation adaptability and the like.

[0002] In addition, the present invention relates to a bottle cap with a gasket and a threaded container with a cap having excellent unsealing properties, sealing properties, gas barrier properties, and the like. Background technique

[0003] Generally, caps (container caps) such as glass bottles, PET bottles, and aluminum bottles are widely used with synthetic resin liners. For metal bottle caps, there are the following methods: paint several times on both sides of aluminum sheet, tin-plated sheet, chrome-plated sheet (TFS), etc., and perform stamping molding, and then use it as a bottle cap shell (cap shell), In this regard, the method of inserting a disc-shaped gasket (disk molded body) in advance (disk insertion method), after inser...

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