Liquid container sealing construction

Details Liquid container sealing construction Liquid container sealing construction

1979-08-20

1981-04-14

Moorhead, Davis T.

Envelopes, wrappers, and paperboard boxes

Paperboard box

Box material includes a coating or a nonpaperboard...

229 45, B65D 312, B65D 302

Patent

active

042615020

ABSTRACT:
A liquid container sealing construction comprises a container body having at least one open end surrounded by a marginal edge thereof and an end closure member closing the open end of the container body. The container body is coated on its inner surface with a heat sealable thermoplastic material. The end closure member includes a peripheral flange coated on its outer surface with a heat sealable thermoplastic material. The peripheral flange and the marginal edge jointly provide a contacting portion where they are intimately fused and united together by the heat sealable thermoplastic material, and also provide a portion where they are held out of contact with each other, the latter portion being located adjacent to the turned edge of the flange. There are also provided a method and apparatus for sealing the liquid container with the end closure member.

REFERENCES:
patent: 2467016 (1949-04-01), Dunlap
patent: 2917215 (1959-12-01), Psaty et al.
patent: 3049277 (1962-08-01), Shappell
patent: 3137431 (1964-06-01), Crouse et al.
patent: 3182882 (1965-05-01), Aellen, Jr. et al.
patent: 3215325 (1965-11-01), Shappell et al.
patent: 3312383 (1967-04-01), Shapiro et al.

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