Method of applying a thermoplastic strip to a container

Details Method of applying a thermoplastic strip to a container Method of applying a thermoplastic strip to a container

1989-06-06

1990-03-27

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

53442, 215246, 264230, 264342R, B32B 3126

Patent

active

049117726

ABSTRACT:
The method includes the step of providing a cylindrical mandrel with vacuum openings around the circumference thereof and of a diameter substantially equal to the maximum diameter of the container. A thermoplastic strip is then wrapped around both the container and the mandrel, and just that portion of the strip enclosing the container is heat shrunk to follow closely the contour of the container. Then, the mandrel is withdrawn from the thermoplastic sleeve and that portion of the sleeve extending above the container is heat shrunk to engage snugly over the top of the container lid.

REFERENCES:
patent: 3984005 (1976-10-01), Amberg
patent: 4028459 (1977-06-01), Lajovic
patent: 4144631 (1979-03-01), Fujio
patent: 4293364 (1981-10-01), Fujio
patent: 4566923 (1986-01-01), Mueller
patent: 4691835 (1987-09-01), Mueller

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