Abstract

In an embodiment, a rotatable mold apparatus includes a first mold disposed on a first base structure to be integrally moved together with the first base structure, a second mold disposed on a second base structure to be integrally moved together with the second base structure in order to couple to or decoupled from the first mold, a drive device configured to rotate the first mold and the second mold together when the first mold and the second mold are coupled to each other and support devices rotatably supporting the first mold and the second mold on the first base structure and the second base structure, respectively.

IPC Classes  ?

• B29C 51/22 - Thermoforming apparatus having movable moulds or mould parts rotatable about an axis
• B29C 51/36 - Moulds specially adapted for vacuum forming
• B29C 51/08 - Deep-drawing or matched-mould forming, i.e. using mechanical means only

Abstract

Disclosed are a porous electroformed shell for forming a grain pattern and a manufacturing method thereof. The method includes the step of causing an epoxy mandrel to be conductive by formation of a conductive thin film thereon; transferring a non-conductive masking pattern on the conductive thin film by using a masking film; generating and growing a fine pore at the position of the non-conductive masking pattern through electroforming; and demolding an electrodeposited layer having the fine pore from the epoxy mandrel, Through the disclosed method, precise control, both as a whole or in part, on a diameter, a formation position, and a density of a fine pore can be simply, economically, and efficiently can be carried out according to various curved shapes of the electroformed shell. Accordingly, in forming the surface of a high-quality surface skin material or a plastic molded product with a predetermined pattern, when the fine pore is used as a decompression suction hole or an air vent, a predetermined pattern can be efficiently and economically obtained in such a manner that it has a regular position, a regular directionality, sharp radii, and minimized deformation.

IPC Classes  ?

• C25D 1/10 - Moulds; Masks; Masterforms
• C25D 1/08 - Perforated or foraminous objects, e.g. sieves

Abstract

Disclosed are a porous electroformed shell for forming a grain pattern and a manufacturing method thereof. The method includes the step of implanting a fiber into a patterned surface of a negative-type silicone cast; applying, laminating, and curing an epoxy resin on the patterned surface of the negative-type silicone cast, and transferring the fiber from the negative-type silicone cast to an epoxy mandrel during demolding of the epoxy mandrel; forming a conductive thin film on the patterned surface of the epoxy mandrel, and causing the patterned surface to be conductive; removing the fiber having the conductive thin film from a surface of the epoxy mandrel; forming an electrodeposited layer by electrodepositing an electroforming metal on the conductive thin film while generating and growing a fine pore at a position of a hole due to the removal of the fiber; and demolding the electrodeposited layer having the fine pore from the epoxy mandrel. Through the disclosed method, precise control on a diameter and distribution of a fine pore can be simply and efficiently can be carried out.

IPC Classes  ?

• C25D 1/08 - Perforated or foraminous objects, e.g. sieves
• C25D 1/10 - Moulds; Masks; Masterforms
• B29C 33/38 - SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING - Details thereof or accessories therefor characterised by the material or the manufacturing process
• C25D 5/02 - Electroplating of selected surface areas
• B29C 51/36 - Moulds specially adapted for vacuum forming
• B29L 31/00 - Other particular articles