Process of simultaneously molding a plurality of shingles

Details Process of simultaneously molding a plurality of shingles Process of simultaneously molding a plurality of shingles

B - Operations, Transporting

29

D

B29D 7/00 (2006.01) B29C 49/00 (2006.01) E04D 1/20 (2006.01)

Patent

CA 2490376

A process of simultaneously molding either a plurality of shingles or double walled shingles or other substantially planar exterior building products is provided, such that a blow moldable thermoplastic material is provided, of a composite parison that is then blow molded in a hollow mold, to produce novel shingles according to the process. Ventilation and/or insulation can be provided to a hollow interior between spaced apart walls of a double walled shingle.

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