A method for producing a part consisting of a polymer material involves injection-moulding said polymer material in a mould comprising a main section for forming the part and an additional section for forming an add-on for the part. The additional section is arranged between the injection point and the main section. The part and the add-on are separated by cutting.

A method for producing a part consisting of a polymer material involves injection-moulding said polymer material in a mould comprising a main section for forming the part and an additional section for forming an add-on for the part. The additional section is arranged between the injection point and the main section. The part and the add-on are separated by cutting.

A control valve includes a housing, a valve body arranged in a valve chamber of the housing, and a support member fixed to the housing and supporting the valve body in the valve chamber. The valve body has a tubular shape into which the support member is inserted, and the valve body is slidable on the support member between a first position to close an inlet passage and a second position to close a drain passage. The valve body includes a skin layer forming an outer surface of the valve body, and a core layer under the skin layer. The outer surface of the valve body includes a core exposed portion where the core layer is exposed without being covered with the skin layer.

A control valve includes a housing, a valve body arranged in a valve chamber of the housing, and a support portion slidably supporting an outer surface of the valve body in the valve chamber. The valve body is slidable on the support portion between an open position at which an outlet port is open and a closed position at which a seat surface of the valve body closes the outlet port. The valve body includes a skin layer forming the outer surface of the valve body, and a core layer under the skin layer. The outer surface of the valve body, other than the seat surface and a slidable area, includes a core exposed portion where the core layer is exposed without being covered with the skin layer.

A control valve includes a housing, a valve body arranged in a valve chamber of the housing, and a support portion slidably supporting an outer surface of the valve body in the valve chamber. The valve body is slidable on the support portion between an open position at which an outlet port is open and a closed position at which a seat surface of the valve body closes the outlet port. The valve body includes a skin layer forming the outer surface of the valve body, and a core layer under the skin layer. The outer surface of the valve body, other than the seat surface and a slidable area, includes a core exposed portion where the core layer is exposed without being covered with the skin layer.

A control valve includes a housing, a valve body arranged in a valve chamber of the housing, and a support member fixed to the housing and supporting the valve body in the valve chamber. The valve body has a tubular shape into which the support member is inserted, and the valve body is slidable on the support member between a first position to close an inlet passage and a second position to close a drain passage. The valve body includes a skin layer forming an outer surface of the valve body, and a core layer under the skin layer. The outer surface of the valve body includes a core exposed portion where the core layer is exposed without being covered with the skin layer.

A method of forming a molded device, such as a stopper, requiring minimal post-molding processing includes providing a four-plate mold assembly (52) having top plate (54), a sprue/vent plate (56) including a core portion (62), a main plate (58) including a recess (66) defining a mold cavity (68) having a contoured surface (70), and a bottom plate (60), closing the mold assembly (52) such that the core portion (62) enters into the recess (66) in the main plate (58) to define a space (72) corresponding to the shape of the stopper (10, 110) to be molded. A polymeric material is introduced into the mold cavity (68) to form the stopper (10, 110). A barrier layer (14, 114) can be inserted between the main plate (58) and bottom plate and adhered to the molded device (10, 110). The plates are opened and the molded device is removed.

A molding system 10 for manufacturing a molded article Q by integrally molding a sheet-shaped insert member S and a molding material R, the molding system comprising: a sheet supply part 20 configured to supply the insert member S; a sheet heating part 30 configured to heat the insert member S; a molding apparatus 100 configured to form the molded article Q by integrally molding the insert member S and the molding material R; an ejector 200 including a delivery position 222 and configured to transfer the insert member S between the sheet heating part 30 and the molding apparatus 100 and to eject and transfer the molded article Q from the molding apparatus; and a transfer robot configured to transfer the insert member S or the molded article Q between the sheet supply part 20 and the ejector.

A molding system 10 for manufacturing a molded article Q by integrally molding a sheet-shaped insert member S and a molding material R, the molding system comprising: a sheet supply part 20 configured to supply the insert member S; a sheet heating part 30 configured to heat the insert member S; a molding apparatus 100 configured to form the molded article Q by integrally molding the insert member S and the molding material R; an ejector 200 including a delivery position 222 and configured to transfer the insert member S between the sheet heating part 30 and the molding apparatus 100 and to eject and transfer the molded article Q from the molding apparatus; and a transfer robot configured to transfer the insert member S or the molded article Q between the sheet supply part 20 and the ejector.

A molding system 10 for manufacturing a molded article Q by integrally molding a sheet-shaped insert member S and a molding material R, the molding system comprising: a sheet supply part 20 configured to supply the insert member S; a sheet heating part 30 configured to heat the insert member S; a molding apparatus 100 configured to form the molded article Q by integrally molding the insert member S and the molding material R; an ejector 200 including a delivery position 222 and configured to transfer the insert member S between the sheet heating part 30 and the molding apparatus 100 and to eject and transfer the molded article Q from the molding apparatus; and a transfer robot configured to transfer the insert member S or the molded article Q between the sheet supply part 20 and the ejector.