Patent ID: 6458446
Filing Date: 2002-10-01
Classification: B29C,B29K,B32B,Y10T

Abstract:
A part manufactured according to a process comprising the steps of molding a thermoplastic material into a generally planar sheet form having a textured surface on at least one side, the textured surface defined by a plurality of protuberances with at least one side wall extending outwardly from the sheet, the thermoplastic material molded with a predetermined pressure between a die and within a perforated insert, removing the molded thermoplastic material sheet and perforated insert from the die, and sintering the molded thermoplastic material sheet at a predetermined temperature for a predetermined period of time, the part comprising:a thermoplastic material molded and sintered into a generally planar sheet form having a textured surface on at least one side, the textured surface defined by a plurality of protuberances with at least one side wall extending outwardly from the sheet; and a dissimilar material layer molded to the textured surface of the sheet and a mechanically locked interface between the dissimilar material layer and the sheet as a result of deformation of the protuberances during the molding process to define a composite layered product, the composite layered product defining a pump diaphragm with the thermoplastic material sheet capable of exposure to a corrosive fluid to be transported mechanically locked to the dissimilar material.