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Patent Searching and Data


Title:
PLASTIC SHEETS FOR THERMOFORMING DENTAL PRODUCTS
Document Type and Number:
WIPO Patent Application WO2006055700
Kind Code:
A3
Abstract:
Thermoforming of plastic sheets over a model includes varying the thickness in the area that is stretched over the model so that when it thins it becomes more uniform in thickness. The plastic sheet is fabricated in a substantially uniform thickness but with a preformed a complex profile or 3D area that partially builds in part of the area that would be stretched so that it thins much less than a flat sheet. Combinations of these elements may also be made.

Inventors:
ANDERSON MICHAEL C (US)
BOZMAN JOHN F (US)
Application Number:
US2005041658W
Publication Date:
August 31, 2006
Filing Date:
November 17, 2005
Export Citation:
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Assignee:
DENTSPLY INTERNATIONAL INC.
ANDERSON, MICHAEL, C.
BOZMAN, JOHN, F.
International Classes:
A61C7/08; A61C9/00; A61C13/00; A61C13/01; A63B71/08; B29C51/02; B29C69/02; B29C51/10
Foreign References:
US20040038171A12004-02-26
FR2763238A11998-11-20
US6524101B12003-02-25
US3682571A1972-08-08
US6082995A2000-07-04
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