Method for regenerating mandrel made of thermally expandable flu

Details Method for regenerating mandrel made of thermally expandable flu Method for regenerating mandrel made of thermally expandable flu

1991-10-16

1992-11-03

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Repairing or restoring consumer used articles for reuse

264 39, 264230, 264235, 264257, 264313, 264337, 264342R, 264346, 425393, 425403, B29C 6104

Patent

active

051606712

ABSTRACT:
A method for regenerating a used mandrel made of a fluororesin, includes the steps of heating the mandrel under substantially unloaded conditions to a temperature above the temperature at which the fluororesin is crystallized and gradually cooling the mandrel to a temperature below the temperature at which the fluororesin is crystallized.

REFERENCES:
patent: 2794481 (1957-06-01), Anderson
patent: 2808622 (1957-10-01), Stott et al.
patent: 2886853 (1959-05-01), Herman et al.
patent: 3061873 (1962-11-01), Supitilov
patent: 3076233 (1963-02-01), Taylor
patent: 3165569 (1965-01-01), Bright
patent: 3656233 (1972-04-01), Overholser
patent: 3962394 (1976-06-01), Hall
patent: 4683099 (1987-07-01), Buxton et al.

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