MOLDING PROCESS FOR RIDGE VENTS AND OTHER INDEX MOLDED PRODUCTS

A method of making a ridge vent includes: disposing a first quantity of a polymeric material in a mold cavity; forming a first ridge vent section in the mold cavity, the first ridge vent section having a stepped end section formed across a width of the first ridge vent section at an end thereof; ind...

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Bibliographische Detailangaben
Hauptverfasser:	HOLLAND ROBERT BRADLEY, GRISHAM PHILLIP R
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING BLASTING BUILDING FIXED CONSTRUCTIONS GUTTERS HEATING LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS RANGES ROOF COVERINGS ROOF-WORKING TOOLS SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SKY-LIGHTS TRANSPORTING VENTILATING WEAPONS WORKING CEMENT, CLAY, OR STONE WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A method of making a ridge vent includes: disposing a first quantity of a polymeric material in a mold cavity; forming a first ridge vent section in the mold cavity, the first ridge vent section having a stepped end section formed across a width of the first ridge vent section at an end thereof; indexing the first ridge vent section so that it is substantially moved beyond the mold cavity but remains in contact at the stepped end section with the mold; disposing a second quantity of polymer between the mold sections; and forming a second ridge vent section which is connected to the first ridge vent section at the stepped end section. The stepped end section includes bottom tread and top tread sections, wherein the tread length of the bottom tread section has a non-uniform tread length across the width of the bottom tread section.