Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Utilizing plasma – electric – electromagnetic – particulate – or...
Patent
1992-02-18
1993-09-07
Thurlow, Jeffery
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Utilizing plasma, electric, electromagnetic, particulate, or...
264 14, 264 22, 264107, 264320, 264293, 425810, B29C 3508, B29C 4304
Patent
active
052426300
ABSTRACT:
A method of manufacturing an object having a surface structure, the method employing pressure members (3, 5) which are movable relative to one another and which have facing pressure surfaces (23, 25). A first element (51) and a second element (53) having a relief on one surface are pressed against one another to provide the second element with a microstructure by cold deformation. During pressing use is made of a pressure body (27, 29) which is interposed between one of the pressure members and one of the elements and which is made of a material having a characteristic parameter equal to the quotient of the Poisson's ratio and the modulus of elasticity of the material, which parameter differs less from the corresponding parameter of the material of the relevant element than from the corresponding parameter of the material of the relevant pressure member. The difference between the parameter of the material of the first element and the parameter of the material of the second element being smaller than or equal to the difference between the parameter of the material of said pressure body and the parameter of the material of the adjacent element.
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Mulder Evert-Jan
Nuij Pieter W. J. M.
Van den Bekerom Peter P. W. L.
Spain Norman N.
Thurlow Jeffery
U.S. Philips Corporation
Vargot Mathieu
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