Method of molding a composite synthetic roofing structure
OwnerWalter M. Gouldinventor
Life of this patent
Estimating the term…
Abstract
A form molded synthetic foam roofing section having a relatively broad undersurface and an exposed surface configured to resemble interlocked and overlapping roofing shingles which is united to a support surface such as wood, metal, etc. during molding process. This section may be affixed by any conventional means such as nails and adhesives to roof boards, rafters or over old existing roofing structure.
Claims13
A method of molding a composite foam synthetic resin product having a stepped portion on at least one edge thereof comprising the steps of:
- introducing into a barrier coated contoured cavity of an open mold having an internal stepped section about a portion of the periphery of said cavity a foamable thermosetting resin reaction mixture;
- temporarily attaching a relatively broad surface reinforcing base member into a stepped portion of a pressure plate for said mold;
- placing said pressure plate with said base member attached thereto on said mold with said base member fitted into said stepped section of said mold;
- securing said pressure plate to said mold, permitting said reaction mixture to foam, cure and unite to said base member;
- removing said pressure plate from said mold with the composite foamed resin structure attached thereto after the thermosetting resin foam has cured;
- and
- removing the composite foam synthetic resin product from said pressure plate.
A method of molding a composite foam synthetic resin roofing structure having a stepped portion on at least one edge thereof utilizing a conveyor system comprising the steps of:
- placing on a conveyor an open mold having an internal stepped section about a portion of the periphery of the contoured cavity of said mold;
- moving said mold to a spray booth and spraying a barrier coat over the contoured surface of said cavity;
- moving said coated mold to a drying booth and drying said barrier coat;
- then
- moving said mold to a chilling compartment and chilling the coated surface of said mold;
- temporarily attaching a relatively broad surface reinforcing base member into a stepped portion of a pressure plate for said mold;
- introducing into said chilled, coated mold a foamable thermosetting resin reaction mixture;
- placing said pressure plate with said base member attached thereto on said mold with said base member fittedinto said stepped section of said mold;
- securing said pressure plate to said mold by passing them between a set of rollers, permitting said reaction mixture to foam, cure and unite to said base member;
- removing said pressure plate from said mold with the composite foamed resin structure attached thereto after the thermosetting resin foam has cured;
- and
- removing the composite foam synthetic resin product from said pressure plate.
Dependencies are inferred from the claim text.