Lamination molding resin-coated sand and lamination molding method using resin-coated sand
First Claim
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1. A resin-coated sand used in a lamination molding process for forming a laminated article by laminating sand layers in a thickness direction, the resin-coated sand comprising:
- generally spherical sand particles about 20 to 100 μ
m in diameter and coated with a laser radiation-cured resin, said resin having a fusion temperature of about 100°
C. or higher and a mean molecular weight of about 2,000 to 10,000.
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Abstract
Lamination molding resin-coated sand which can advantageously enhance accuracy for a formed article, is lamination molding resin-coated sand used for lamination molding for forming an article by laminating sand layers in thickness direction. Sand particles coated with resin are 20 to 100 μm in diameter and generally spherical. The resin has a mean molecular weight of about 2000 to 10000 and a fusion temperature of 100° C. or higher.
69 Citations
4 Claims
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1. A resin-coated sand used in a lamination molding process for forming a laminated article by laminating sand layers in a thickness direction, the resin-coated sand comprising:
generally spherical sand particles about 20 to 100 μ
m in diameter and coated with a laser radiation-cured resin, said resin having a fusion temperature of about 100°
C. or higher and a mean molecular weight of about 2,000 to 10,000.- View Dependent Claims (2)
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3. A method, comprising:
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preparing resin-coated sand of generally spherical sand particles each having a particle diameter of 20 to 100 μ
m and coated with resin, said resin having a fusion temperature of about 100°
C. or higher and a mean molecular weight of about 2,000 to 10,000;
a sand application step of applying said resin-coated sand to form a thin sand layer;
a laser radiation step of radiating a laser beam onto said sand layer to cure said resin;
alternately repeating said sand application step and said laser radiation step until sand layers are laminated in a thickness direction and an article is formed. - View Dependent Claims (4)
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Specification
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Current AssigneeToyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
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Original AssigneeToyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
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InventorsOzaki, Motoaki, Otsuka, Yukio
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Primary Examiner(s)Le, Hoa T.
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Application NumberUS09/351,368Time in Patent Office904 DaysField of Search428/407, 427/508, 427/221US Class Current428/407CPC Class CodesB29C 64/165 using a combination of soli...Y10T 428/2998 including synthetic resin o...
