Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – Opposed registering coacting female molds
Patent
1997-11-26
2000-09-19
Ortiz, Angela
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
Opposed registering coacting female molds
425127, 4251291, 425121, 264252, B29C 3314, B29C 4514
Patent
active
061202746
ABSTRACT:
A mold assembly and method for holding a panel or sheet of material such as glass while molding a member around an attachment member and a gasket around a peripheral portion of the panel from a thermoplastic or other moldable material such as PVC. The assembly and method provides a movable, secondary pressure pad which reduces the percentage of broken panels of material. The mold assembly includes a first mold section and a second mold section, which define a mold cavity therebetween. The first mold section includes a first sheet holding surface adjacent the mold cavity, and the second mold section includes a movable, primary pressure pad having a second sheet holding surface adjacent the mold cavity. The primary pressure pad is urged toward the sheet by resilient members to hold the sheet between the first and second holding surfaces in a manner so that the peripheral portion of the sheet extends into the cavity for molding a gasket thereon. The secondary pressure pad is supported by one of the second mold section and the movable, primary pressure pad and includes an attachment member holder, preferably a recess, which holds and positions the attachment member remote from the peripheral portion of the sheet during molding. The secondary pressure pad includes a second mold cavity which extends around the attachment so that the moldable material injected into the mold apparatus will form a molded member around the attachment member to thereby adhere the attachment member to the sheet.
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Dubay Steven C.
Gerig Grant A.
Nestell David E.
Donnelly Corporation
Ortiz Angela
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