Process for producing information carrying discs

Details Process for producing information carrying discs Process for producing information carrying discs

1978-07-18

1979-06-12

Hoag, W. E.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156242, 156246, 156272, 264 22, 264135, 264102, 264106, 264311, 264255, B29D 1700, B29C 2700, B29C 1300

Patent

active

041579313

ABSTRACT:
The process according to the invention uses a matrix engraved by any means, the tracks being perfectly centered on this matrix in relation to a center of rotation. The matrix is placed in a vacuum chamber on a supporting axis capable of rotating and is coated over its entire surface with a polymerizable material which is free from air bubbles and which does not adhere to the constituent material of the matrix. A substrate previously drilled at its center, balanced and coated with a material to which the polymerizable material adheres, is placed on the supporting shaft and held at a distance from the matrix. The vacuum is established in the chamber and the substrate is brought into contact with the matrix. On completion of polymerization outside or inside the chamber, the substrate carrying the moulded resin is readily separated from the matrix.

REFERENCES:
patent: 1146391 (1915-07-01), Aylsworth
patent: 1179660 (1916-04-01), Sanders
patent: 2431923 (1947-12-01), Dimmick
patent: 3068510 (1962-12-01), Coleman
patent: 3359129 (1967-12-01), Mao
patent: 3430966 (1969-03-01), Gregg
patent: 3639188 (1972-02-01), Vogel
patent: 3795534 (1974-03-01), Mehalso et al.
patent: 3882214 (1975-05-01), Nosker et al.
patent: 3954469 (1976-05-01), Avanzado et al.
patent: 4054635 (1977-10-01), Schlesinger et al.

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