Method for forming plastic sheet

Details Method for forming plastic sheet Method for forming plastic sheet

1980-03-31

1982-05-11

Derrington, James H.

Plastic and nonmetallic article shaping or treating: processes

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

Dividing work to form plural articles

264285, 264286, 264296, 425384, 425392, B29C 714

Patent

active

043293077

ABSTRACT:
This invention relates to a machine for and a method of making building products from a coiled sheet of thermoplastic polymer such as polyvinyl chloride. In the practice of this invention, portions of the polymeric sheet are selectively and sequentially heated and progressively bent to the desired shape by passing the sheet through a series of heating, forming and cooling stations.
The simplified design of the machine enables the user to custom fabricate building products at a construction site with a resulting savings in cost. Typical products adapted to be made in accordance with the invention are exterior building siding, siding accessories and other building products.

REFERENCES:
patent: Re28733 (1976-03-01), Cohen
patent: 2315804 (1943-04-01), Massoline
patent: 2779388 (1957-01-01), Quoss
patent: 3024496 (1962-03-01), Colombo
patent: 3169274 (1965-02-01), Colombo
patent: 3197536 (1965-07-01), French
patent: 3237361 (1966-03-01), Norman
patent: 3281516 (1966-10-01), Southwick
patent: 3791185 (1974-02-01), Knudson
patent: 3952037 (1960-09-01), Ruck et al.
patent: 4096011 (1970-06-01), Sanders

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