Container closure wth liner and method of producing the same

Details Container closure wth liner and method of producing the same Container closure wth liner and method of producing the same

1994-08-09

1996-08-06

Shoap, Allan N.

Bottles and jars

Closures

Cap type

206 7, 220378, B65D 5304

Patent

active

055425577

ABSTRACT:
A container closure comprising a container closure shell and a resin liner applied to the inner surface side of the shell, wherein the resin liner is constituted by an upper layer portion which is composed of a resin composition containing such additives as disoxidation agent, drying agent, deodorant, antibacterial agent and thermo color agent and which forms a panel portion on the inside of the hermetically sealing portion, a lower layer portion which is composed of a thermoplastic resin having cushioning property and elasticity and which is interposed between the upper layer portion and the top surface of the shell to join them together, and a hermetically sealing portion which is formed on the outer peripheral side of the panel portion integrally with the lower layer portion. There is further provided a container closure with liner of the function separation type which is free from defects inherent in the conventional function addition-type container closures with liner, and which permits additional functions to be exhibited to a high degree without impairing hermetically sealing property, and a method of producing the same. Moreover, there is provided a method of producing the container closure with liner of the function separation type maintaining excellent produceability and high quality.

REFERENCES:
patent: 4111323 (1978-09-01), Ichmose et al.
patent: 4287995 (1981-09-01), Moriya
patent: 4372457 (1983-02-01), Kunumoto et al.
patent: 4536409 (1985-08-01), Farrell et al.
patent: 4702966 (1987-10-01), Farrell et al.
patent: 4740402 (1988-04-01), Maeda et al.
patent: 4785952 (1988-11-01), Obadia
patent: 5089323 (1992-02-01), Nakae et al.
patent: 5143763 (1992-09-01), Yamada et al.

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