METHOD FOR SMOOTHING SURFACE OF THREE-DIMENSIONAL MODEL FORMED BY LAMINATION SHAPING OF POLYSTYRENE POWDER AND PRECISION CASTING METHOD USING THE MODEL

WIPO Patent Application WO/2005/121229

A1

[PROBLEM] To smooth the whole of the surface of a three-dimensional model formed by the lamination shaping of a polystyrene powder, which includes the inner and outer surfaces of a hollow portion and has a complicated curved face, with no deformation of the model and no significant change of dimensional precision with operations at an ordinary temperature without delay. [MEANS FOR SOLVING PROBLEM] A method for smoothing the surface of a three-dimensional model formed by the lamination shaping of a polystyrene powder, which comprises an immersion step (A) of immersing (a) the three-dimensional model formed by the lamination shaping of a polystyrene powder in an organic solvent (b) containing a polystyrene dissolved therein, a removal step (B) of removing an organic solvent excessively attached to the model immediately after the pulling-up from the organic solvent (b) containing a polystyrene, and a drying and film forming step (C) of forming film through drying at an ordinary temperature, wherein the organic solvent (b) containing a polystyrene dissolved therein has a polystyrene content of 0.01 to 5 wt %.

SUZUKI HIDEKAZU (JP)
SAITO AKIO (JP)
OI TAKAHARU (JP)
TAKASE AKIRA (JP)

PCT/JP2004/007968

December 22, 2005

June 08, 2004

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SHONAN DESIGN CO LTD (JP)
SUZUKI HIDEKAZU (JP)
SAITO AKIO (JP)
OI TAKAHARU (JP)
TAKASE AKIRA (JP)

C08J7/02; (IPC1-7): C08J7/02

JP2002265619A	2002-09-18
JPS4610957B1	1971-03-19

Onuki, Kazuyasu (5th Floor 8-8, Shibuya 1-chom, Shibuya-ku Tokyo 02, JP)

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