Manufacturing process of an insulator

Details Manufacturing process of an insulator Manufacturing process of an insulator

1996-09-18

1998-07-14

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

264250, B29C 4514, B29C 4516

Patent

active

057799636

ABSTRACT:
A process of manufacturing an insulator having a central core and an insulating body fitted tightly around the central core includes interposing a flexible coating layer between a part of the central core and the insulating body. The flexible coating layer fills in shrinkage cavities and compensates for a retraction effect caused by injected material used in forming the insulating body. The insulating body is achieved by overmolding the central core previously coated with the flexible coating layer with an injected insulating resin such as a thermoplastic or thermosetting resin. The insulator could be used as a capacitive divider or bushing insulator.

REFERENCES:
patent: 4243628 (1981-01-01), Herold
patent: 4246696 (1981-01-01), Bauer et al.
patent: 4312123 (1982-01-01), Wheeler
patent: 4702873 (1987-10-01), Kazcerginski
patent: 5223315 (1993-06-01), Katsura et al.
patent: 5516477 (1996-05-01), Johnson et al.
patent: 5523038 (1996-06-01), Kuneida et al.

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