Method of making interlocking vinyl siding

Details Method of making interlocking vinyl siding Method of making interlocking vinyl siding

1984-02-16

1987-03-10

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264178R, 2642102, 264284, 264285, 264295, 264322, 425325, 425388, B29C 5304

Patent

active

046490086

ABSTRACT:
Interlocking vinyl siding panels are formed from vinyl sheets. A sheet of vinyl is extruded with a V-shaped bend along one of its edges, and a Z-shaped bend intermediate its edges. The extruded sheet of vinyl is then formed, while in a hot, semi-viscous state into the final siding profile. As the siding profile is formed, the V-shaped bend is formed into a first locking profile and the Z-shaped bend is formed into a second locking profile. The first locking profile is dimensioned for a snap-type engagement with the second locking profile of another similarly formed siding member.

REFERENCES:
patent: 3281516 (1966-10-01), Southwick
patent: 3454693 (1969-07-01), Crenshaw
patent: 3622418 (1971-11-01), Black et al.
patent: 3776672 (1973-12-01), Heilmayr
patent: 3886250 (1975-05-01), Danko
patent: 4096011 (1978-06-01), Sanders et al.
patent: 4247506 (1981-01-01), Summers
patent: 4329307 (1982-05-01), Westcott et al.
patent: 4352771 (1982-10-01), Szabo

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