Method of producing laminated shingle

Details Method of producing laminated shingle Method of producing laminated shingle

B - Operations, Transporting

32

B

B32B 3/16 (2006.01) E04D 1/28 (2006.01) B32B 31/18 (1995.01)

Patent

CA 2278335

A method of making a multi-layer laminated shingle, in which a sheet of roofing material is cut into four strips, namely a shim strip, a first narrow tooth strip, a wide tooth strip, and a second narrow tooth strip, all dovetailing with each other. The shim is then laminated below the wide tooth strip to produce a first lamination. The first lamination is slit lengthwise along its centre to produce two half first lamination strips. Each half first lamination strip is then laminated below a narrow tooth strip to produce two three layer lamination strips which are cross-cut into shingles. This enables production of a three layer laminated shingle simply and efficiently. In a modified method, two shim strips are used, one at each side of the sheet of roofing material, each being laminated below the wide tooth strip to produce a first lamination as before.

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