Method for molding corrugated pipe sleeve

Details Method for molding corrugated pipe sleeve Method for molding corrugated pipe sleeve

1986-12-15

1988-02-09

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Making hole or aperture in article

264266, 264274, 264279, 2643281, B28B 148, B29C 4514

Patent

active

047241110

ABSTRACT:
A method of molding a sleeve on a corrugated pipe consisting of an inner wall and fusion-bond ridges. Two clamps can close to engage several of the ridges. One to three of the ridges project into a molding space between the clamps. A core is inserted into pipe and closes the molding space. Hot pressurized resin softens and collapses the projected ridges and fusion bonds the pipe to the sleeve portion of the molding space.

REFERENCES:
patent: 2604661 (1952-07-01), Karns
patent: 2986411 (1961-05-01), Anderson
patent: 3291881 (1966-12-01), Michael
patent: 3395591 (1968-08-01), Shaeffer
patent: 3435107 (1969-03-01), Conrad
patent: 4088156 (1978-05-01), Kubo et al.
patent: 4134431 (1979-01-01), Davidson et al.
patent: 4303104 (1981-12-01), Hegler et al.
patent: 4534923 (1985-08-01), Lupke

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