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

2006-11-28

2006-11-28

McDowell, Suzanne E. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

C264S516000, C264S523000, C264S157000, C264S267000, C264S046600

Reexamination Certificate

active

07141200

ABSTRACT:
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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