Method for restoring dented areas in bottle neck finish

Details Method for restoring dented areas in bottle neck finish Method for restoring dented areas in bottle neck finish

1982-03-11

1985-06-11

Silbaugh, Jan

Plastic and nonmetallic article shaping or treating: processes

Repairing or restoring consumer used articles for reuse

264521, 264230, 425 11, 425445, B29C 1700

Patent

active

045227705

ABSTRACT:
This relates to the removal of indentations in the sealing surfaces of plastic bottles, particularly blow molded bottles. The neck finish of each bottle, as it moves along a discharge conveyor from a blow molding machine, is heated to a temperature approaching the glass transition temperature of the plastic material, at which temperature the memory of the plastic material begins to induce slight flow and wherein the indentations are eliminated by the flow of the plastic material of the sealing surface.

REFERENCES:
patent: 4035462 (1977-07-01), Lane, Jr.
patent: 4260567 (1981-04-01), Poppe et al.
patent: 4375442 (1983-03-01), Ota et al.
patent: 4379099 (1983-04-01), Ota et al.

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