Plastic containers and lids therefor

Details Plastic containers and lids therefor Plastic containers and lids therefor

1978-11-08

1980-08-05

Hall, George T.

Receptacles

Closures

Removable closure retained by adhesive or fusion means

229 43, 150 05, 220276, B65D 4100

Patent

active

042157978

ABSTRACT:
Reusable plastic container and plastic lid therefor, the lid being hermetically sealed to the container by a set adhesive. The set adhesive has a greater attraction for the lid plastic than for the container plastic. Such attraction is sufficient to ensure that, on removing the lid from the container, the adhesive is peeled from the container rim and removed with the reusable lid. This leaves the container rim essentially free of adhesive to reduce the likelihood of contaminating the contained product with adhesive chemicals. The lid or the container rim may be coated with the adhesive prior to heat-seal. In the instance where the container is coated with the adhesive, the rim ledge portion may be provided with at least one continuous circumferentially extending raised portion to facilitate coating of the container rim. Processes for manufacturing the adhesive-coated container lid and forming the container rim portion and applying adhesive thereto are disclosed.

REFERENCES:
patent: 3276616 (1964-02-01), Lurie
patent: 3501042 (1970-03-01), Risch et al.
patent: 4044941 (1977-08-01), Knudsen

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