Method of and device for producing a hollow columnar piece

Details Method of and device for producing a hollow columnar piece Method of and device for producing a hollow columnar piece

1992-05-14

1993-11-30

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

15624411, 264 455, 2642092, 26421121, 2642976, 264323, 264334, 425319, 425325, 4253781, 425381, 425393, 425403, 425438, 425467, B29C 4720

Patent

active

052662608

ABSTRACT:
A method of the device for producing a hollow columnar piece whereby a blend of essentially thermoplastic particles is melted into a billet, introduced into a mold, looped into layers inside the mold, and transformed into a piece, subsequent to which the piece is solidified by cooling and removed. The billet (3) is rotated around its axis and concentric with its face as it is introduced into a mold (4), the mold accommodates a core (20), space is left between the core and the inner surface (6) of the mold, the billet is laid along the circumference of the space, and the billet continues to be introduced into the space until the mold's inner surface and core are uniformly and continuously wet with constituents of the billet.

REFERENCES:
patent: 2400055 (1946-05-01), Wallace
patent: 2666947 (1954-01-01), Shaw
patent: 3234597 (1966-02-01), Peborgh
patent: 3366718 (1968-01-01), Komada
patent: 3407440 (1968-10-01), Myers, Jr.
patent: 3870451 (1975-03-01), Gokcen
patent: 4187352 (1980-02-01), Klobbie
patent: 4738808 (1988-04-01), Hammer et al.

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