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04-25-2007

Plastic sheets for thermoforming dental products

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 (10) 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.

Document: EP1776061
Click here for the full patent text at DEPATISnet [PDF]
Publication date: 04-25-2007
Applicant: DENTSPLY INT INC (US)
Inventor: ANDERSON MICHAEL C (US); BOZMAN JOHN F (US)


© European Patent Office. This information was obtained from the espacenet of the European Patent Office. There is no guarantee of its correctness or curency. For additional information, please use the research at espacenet. It is possible to determine the current legal and procedural status of patents and utility patents/models at http://worldwide.espacenet.com/ kfree of charge.

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