Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step
Patent
1980-11-17
1982-04-20
Powell, William A.
Adhesive bonding and miscellaneous chemical manufacture
Delaminating processes adapted for specified product
Delaminating in preparation for post processing recycling step
134 38, 1566611, 156658, 427277, C23F 102
Patent
active
043257798
ABSTRACT:
The invention includes the process of shaping a workpiece and for producing a surface contour complementary to the surface contour of a model. The process comprises the steps of applying a masking material to at least a portion of the surface of the workpiece to be shaped, the masking material being adapted to protect the surface from the effects of etchant. A template is then pressed against the surface, the template having a surface contour comprising a negative image of the surface contour to be formed in the workpiece, the template surface being comprised of material adapted to remove the masking material when the template is pressed against the surface and removed from the surface. The template is then withdrawn from the surface to remove masking material from those portions of the surface contacted by the template surface. Etchant is then applied to the surface not covered by the masking material. The steps of pressing the template against the surface to remove masking material and etching the surface of the workpiece are repeated until the surface contour of the workpiece conforms to the surface contour of the model.
REFERENCES:
patent: 681727 (1901-09-01), Offenbacher
patent: 1709327 (1929-04-01), Spalding et al.
patent: 1903778 (1933-04-01), Conroy
patent: 1991697 (1935-02-01), Powers
patent: 2026603 (1936-01-01), Zarse
patent: 2032771 (1936-03-01), Scherer
patent: 2888335 (1959-05-01), Atkins, Jr. et al.
patent: 3380864 (1968-04-01), Broderick
patent: 3579394 (1971-05-01), Nelson
patent: 4113549 (1978-09-01), Brimm
Beatrice Foods Co.
Powell William A.
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