Method and apparatus of producing a deep-drawn formed...

Details Method and apparatus of producing a deep-drawn formed... Method and apparatus of producing a deep-drawn formed...

B - Operations, Transporting

29

C

18/1068

B29C 51/10 (2006.01) B29C 51/14 (2006.01) B29C 67/00 (2006.01) B60K 37/00 (2006.01) F21S 8/00 (2006.01) F21V 5/00 (2006.01)

Patent

CA 2004376

Cold-stretchable sheet material is isostatically formed at an operating temperature beneath the softening temperature of the sheet material by means of a fluid pressure medium at a pressure of more than 20 bars so as to produce a deep-drawn formed plastics piece. Forming may take place abruptly. The sheet to be formed may be provided with a coating such as an ink imprint. The resulting thin-walled deep-drawn piece may be backed and reinforced by injecting further plastics material.

Un feuille de plastique étirable à froid est déformée isostatiquement à une température inférieure à sa température d'amollissement au moyen d'un agent fluide dont la pression est supérieure à 20 bars pour donner un embouti profond. La déformation peut être brutale. La feuille de plastique devant être emboutie peut comporter un revêtement, une inscription à l'encre par exemple. L'embouti profond à parois minces obtenu peut être doublé et renforcé par injection de matière plastique.

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