Method of thread masking and thread masked part

Details Method of thread masking and thread masked part Method of thread masking and thread masked part

1988-05-18

1989-08-15

Smith, Gary L.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Internally threaded fastener element, e.g., nut, etc.

411378, 411903, 134 1, 134 4, 134 38, 427156, 427287, 4273885, F16B 3700

Patent

active

048569542

ABSTRACT:
A method of masking the threaded portion of a threaded fastener part to prevent adhesion of coatings comprising the steps of applying a film of a heat activated foaming polymeric material to the threaded portion of a threaded part prior to exposing the threads to a coating and heating the foaming material subsequent to the application of a coating thereto. The foaming material comprises a plastisol, preferably including a vinyl compound, which most preferably is polyvinyl chloride. The foaming material further comprises a blowing agent, preferably azodicarbonamide.

REFERENCES:
patent: 3416492 (1968-12-01), Greenleaf
patent: 3483056 (1969-12-01), Cheesman et al.
patent: 4210567 (1980-07-01), Kosters
patent: 4268544 (1981-05-01), Wallace
patent: 4278713 (1981-07-01), Burba et al.
patent: 4548967 (1985-10-01), Brown et al.
patent: 4701348 (1987-10-01), Neville
patent: 4748049 (1988-05-01), Charles et al.

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