Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1994-12-29
1996-12-17
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
264316, 264322, 264334, 264345, 264348, B29C 3338
Patent
active
055850626
ABSTRACT:
A process for producing a cylindrical product of a fiber reinforcement-thermoplastic resin composite, which involves disposing a mandrel on a flexible guide sheet which can be formed in the shape of the letter U around the mandrel, heating a fiber reinforcement-thermoplastic resin composite sheet to a temperature not lower than the distortion temperature of the resin and lower than the thermal degradation temperature of the resin of the composite, disposing an end of the heated composite sheet at a line of contact of the mandrel with the flexible guide sheet, then rolling the mandrel on the guide sheet while moving the guide sheet, the guide sheet forming a shape of the letter U around the mandrel being drawn into the concave portion of the letter U, and the composite sheet disposed between the mandrel and the guide sheet being in intimate contact with the mandrel and the guide sheet, to thereby wind the composite sheet on the mandrel, and then recovering a cylindrical product made from the wound composite sheet. An apparatus for carring out production of the cylindrical product using a mandrel and a guide sheet.
REFERENCES:
patent: 3742106 (1973-06-01), Price
patent: 4759815 (1988-07-01), Frey
patent: 4897286 (1990-01-01), Kosuda et al.
patent: 5262118 (1993-11-01), Fukushima et al.
patent: 5384085 (1995-01-01), Houser et al.
Endo Yoshihiro
Muramatsu Teruaki
Tentoni Leo B.
Toho Rayon Co. Ltd.
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