Thread lock

Coating processes – Electrical product produced – Welding electrode

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Details

427287, B05D 306

Patent

active

048471135

ABSTRACT:
The method of making a friction locking fastener of the type having in the thread grooves a first deposit formed of a mixture of an uncured epoxy resin and a radiation-curable, film-forming material, and a second deposit of a fluid curing agent and a radiation-curable, film-forming material. The deposits are made in the thread grooves at circumferentially spaced locations so that a very thin coating of the radiation-curable, film-forming material develops at the surface of each deposit. The deposits are subjected to high intensity ultraviolet radiation for a few seconds to transform the coatings developed on the surfaces of the deposits into thin, continuous, flexible, non-tacky protective films which cover the still fluid deposits in the thread grooves of the article. Alternatively, when one or both the resin and the curing agent are microencapsulated. They may be contained in a single mixture which includes the radiation-curable material. That mixture, when deposited and exposed to radiation, will form a protective film at the surface. The resin will not be polymerized until the capsule are ruptured.

REFERENCES:
patent: 3746068 (1973-07-01), Deckert et al.
patent: 4091122 (1978-05-01), Davis et al.
patent: 4228216 (1980-10-01), Austin et al.
patent: 4258378 (1981-08-01), Wallace
patent: 4366190 (1982-12-01), Rodden et al.
patent: 4484204 (1984-11-01), Yamamoto et al.

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