Method and device for the fabrication of plastic sleeves

Details Method and device for the fabrication of plastic sleeves Method and device for the fabrication of plastic sleeves

1986-04-30

1988-01-12

Czaja, Donald E.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156 86, 156247, 156285, 156344, 156447, 156494, 156584, B32B 3100, B29C 5342

Patent

active

047189614

ABSTRACT:
In the fabrication of a plastic sleeve by heat sealing overlapped ends of a plastic film blank wrapped around a mandrel, a part of the underlying overlapped end is often melted inadvertently and adheres to the mandrel, obstructing easy stripping of the sleeve off the mandrel. Accordingly, a tensioning groove is formed in the mandrel surface, and a pressing-in bar is pressed thereinto over the sleeve while a part of the sleeve is held stationary against the mandrel by a holding plate to pull the sleeve part thus adhering sidewise in the peripheral direction of the mandrel and thereby to peel away and free the same.

REFERENCES:
patent: 4199851 (1980-04-01), Doherty
patent: 4365460 (1982-12-01), Cress
patent: 4496409 (1985-01-01), Kontz

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