Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – Female mold type means
Patent
1982-09-28
1984-08-21
Czaja, Donald E.
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
Female mold type means
425126R, 425298, 425553, 264275, 264257, 264247, B29F 110
Patent
active
044667876
ABSTRACT:
An improved apparatus and method are disclosed for forming molded plastic articles, such as support devices, having wooden or otherwise fibrous backing members bonded thereto. The apparatus includes an injection molding machine within which the molded plastic articles are formed. Continuous strips of backing material are provided, and are drawn through the apparatus by a novel feed roller mechanism which is intermittently operated in synchronization with the cyclical operation of the injection molding machine. A punch and die mechanism associated with the molding die assembly of the injection molding machine severs discrete backing members from the continuous strip of material, and thereafter advances the severed backing members to a portion of the periphery of the one or more molding cavities defined by the molding die assembly of the machine. The use of continuous strips of backing material intermittently advanced through the apparatus has been found to greatly facilitate efficient formation of the backed molded articles by eliminating problems heretofore associated with formation of the backing members from individual discrete strips of fibrous material, and by permitting extended operation of the apparatus without replenishment of the supply of backing material.
REFERENCES:
patent: 3324508 (1967-06-01), Dickinson
patent: 3743458 (1973-07-01), Hallauer et al.
patent: 3792948 (1974-02-01), Martinez
patent: 4025258 (1977-05-01), Ragir et al.
patent: 4372736 (1983-02-01), Gooch et al.
Bielecki John M.
Ragir Meyer J.
Czaja Donald E.
Fischbach V.
Ragir Meyer J.
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