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Infiltrated Articles Prepared by a Laser Sintering Method and Method of Manufacturing the Same

Inactive Publication Date: 2007-03-01
3D SYST INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0016] The present invention is directed to an improved method of infiltrating an article prepared by an LS process. For articles manufactured using an LS process, the present method retains the flexibility of the article, maintains the dimension of the article, and improves the strength and esthetics of the article.
[0024] In another aspect of the present invention, the liquid infiltrant and method of infiltrating the article substantially retain the original dimensions and flexibility of the article, while increasing the strength and durability of the article. In yet another aspect of the present invention, the esthetics of the article are improved.

Problems solved by technology

Both rigid and flexible articles manufactured by LS technology are sufficiently porous such that undesirable physical and esthetic properties can result.
Porous articles having inadequate strength, unsatisfactory hardness, low abrasion resistance, and / or rough surface finish, are significantly limited with respect to the practical applications in which such articles can be used.
However, prior infiltration methods and compositions have disadvantages, such as involving a complex procedure or altering the dimensions or physical properties of an article prepared by an LS process.

Method used

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Embodiment Construction

[0030] The present invention is directed to a composition and method of infiltrating an article manufactured using an LS process. The infiltration process comprises easy and low-cost steps that increase the strength and durability of the article, while maintaining the dimensions, resolution, and flexibility of the article, and improving the esthetics of the article.

[0031] An article first is built from a particulate polymeric build material using an LS process known in the art. Often, the build material is a thermoplastic polymeric material that provides a flexible article. However, the present method also is useful for infiltrating rigid articles, for example, an article prepared in an LS process using a thermosetting polymeric material.

[0032] Nonlimiting examples of particulate polymeric materials useful in an LS process are disclosed in WO 2005 / 025839 and in U.S. Pat. No. 6,110,411. The polymeric materials disclosed therein are thermoplastic block copolymers, which contain disc...

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Abstract

A composition and method of infiltrating an article of manufacture prepared by a laser sintering process is disclosed. The infiltration process maintains the dimensions and flexibility of the article, increases the strength of the article, and improves the physical and esthetic properties of the article.

Description

CROSS REFERENCE TO RELATED APPLICATION(S) [0001] This application claims the benefit of Provisional Application No. 60 / 710,499 filed on Aug. 23, 2005 by Martinoni, et al., and entitled “Infiltrated Articles Prepared by a Laser Sintering Method and Method of Manufacturing the Same,” which is incorporated herein by reference in its entirety.FIELD OF THE INVENTION [0002] The present invention relates to a composition and method of infiltrating an article of manufacture prepared by a laser sintering process. More particularly, the present invention relates to a composition and method of infiltrating an article prepared by a laser sintering process, wherein the dimensions of the article are retained during the infiltration process, the flexibility of a flexible article is maintained, and the physical and esthetic properties of the article are improved. BACKGROUND OF THE INVENTION [0003] Laser sintering (LS), also termed selective laser sintering, is a process whereby a dispenser deposits...

Claims

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Application Information

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IPC IPC(8): B27N5/00
CPCB29C67/0081B29C67/0077B33Y80/00B29C64/153B29C64/165B33Y40/20
Inventor MARTINONI, RAFFAELEBOEHLER, PAUL
Owner 3D SYST INC
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