Manufacturing roofing shingles

Details Manufacturing roofing shingles Manufacturing roofing shingles

1990-07-02

1992-04-07

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156264, 156512, B32B 3118

Patent

active

051024870

ABSTRACT:
A method and apparatus for manufacturing roofing shingles having tabs and cutouts comprises a cutting cylinder for engaging a membrane and cutting it into continuous strips, where the circumference of the cutting cylinder and the length of the shingle have a common factor other than the length of the shingle, and an endcut cylinder for cutting the continuous shingle membrane strips into discrete roofing shingles, so that the pattern of tabs and cutouts will repeat itself periodically.

REFERENCES:
patent: 2171010 (1939-08-01), Schuetz et al.
patent: 3624975 (1971-12-01), Morgan et al.
patent: 3921358 (1975-11-01), Bettoli
patent: 4499702 (1985-02-01), Turner
patent: 4729814 (1988-03-01), Jennus et al.

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