Abstract

The object of the invention is a method and an apparatus for manufacturing articles with the help of a mould. The solution according to the invention comprises a strong pressure-resistant frame (1) and also a pressurizing box (6) to be disposed in it, in which pressurizing box moulds of essentially thin structure can be surrounded with high pressures and temperatures. By utilizing high temperatures, post-treatment with an autoclave is avoided. With the solution according to the invention techniques known from plastic mould technology, which have been used e.g. in vacuum forming moulds and injection moulding moulds, are applied to articles and moulds to be manufactured with compression moulding technology.

IPC Classes  ?

• B21D 22/20 - Deep-drawing
• B21D 22/12 - Stamping using yieldable or resilient pads using enclosed flexible chambers
• B30B 1/32 - Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure

Abstract

The object of the invention is a method and a mould arrangement for manufacturing articles with the help of a mould. The solution according to the invention comprises a strong pressure-resistant frame (1) and also a pressurizing box (6) to be disposed in it, in which pressurizing box the moulds can be surrounded with high pressures and temperatures. By utilizing high temperatures, post-treatment with an autoclave is avoided. Bottom parts suited to the manufacturing technique can be dis- posed as the bottom part of the pressurizing box (6), in which case with the solution according to the invention techniques known from plastic mould technology, which have been used e.g. in vacuum forming moulds and injection moulding moulds, are applied to articles and moulds to be manufactured with compression moulding technology.

IPC Classes  ?

• B21D 22/20 - Deep-drawing
• B21D 22/12 - Stamping using yieldable or resilient pads using enclosed flexible chambers
• B30B 1/32 - Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure