Patent ID: 8992199
Filing Date: 2015-03-31
Classification: B29C,B29K

Abstract:
1. A molding apparatus comprising: upper and lower mold halves, at least one of the upper and lower mold halves having a molding cavity, a seal cavity and at least one movable mold portion formed therein; and a dynamic seal comprising a base portion, an intermediate seal portion, a straight arm portion and a flexible arm portion, each arm portion extending from the intermediate seal portion, the base portion being positioned within at least a portion of the seal cavity; wherein when a sheet of a substrate material is placed between the upper and lower mold halves, at least a portion of the periphery of the sheet is within the molding cavity proximate the dynamic seal, such that the straight arm portion is in sealing contact with a major surface of the sheet, and the flexible arm portion is proximate at least a portion of the peripheral edge of the sheet of substrate material, and whereby closing the upper and lower mold halves causes the at least one moveable mold portion to contact the flexible arm portion, and sealingly press the flexible arm portion against the peripheral edge of the sheet, and wherein the flexible arm portion is capable of moving in an arc of at least 10°.