Optical disc and method and apparatus for making same

Details Optical disc and method and apparatus for making same Optical disc and method and apparatus for making same

1992-06-30

1994-06-07

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156330, 428694R, 430272, B32B 3104, G11B 566

Patent

active

053186532

ABSTRACT:
An optical disc comprises two facing disc units, at least one of which has a recording layer formed on its surface facing to the other disc unit. The disc units are bonded together by a layer of adhesive which may be a room-temperature curing thermosetting adhesive having a glass transition temperature higher than the upper limit of the range of temperatures of environments in which the disc may be used. Alternatively, the adhesive may be a room-temperature curing two-pack epoxy adhesive which comprises a bisphenol epoxy resin base agent and a modified aliphatic polyamine curing agent, and which has a viscosity of 100-1000 cps, a pot life of one hour or more, a cure shrinkage of 1.0% or less, a water absorption, after curing, of 0.2% or less, and a Shore hardness, after curing, of 80-90.

REFERENCES:
patent: 3607528 (1971-09-01), Gassaway
patent: 3948657 (1976-04-01), Yoshikawa
patent: 4428793 (1984-01-01), Sato
patent: 4711798 (1987-12-01), Ueda
patent: 4877475 (1989-10-01), Uchida
patent: 4892606 (1990-01-01), Miyazake
patent: 4917751 (1990-04-01), Ohta
patent: 4990208 (1991-02-01), Kano
patent: 5118371 (1992-06-01), Hori
May, Epoxy Resins, Chemistry and Technology, 2nd ed. pp. 683-687, 1988.
Skeist, Epoxy Resins, 1958.
Skeist, Handbook of Adhesives, 3rd. ed., 1990.

Affiliated with

Also associated with

Rating

Optical disc and method and apparatus for making same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical disc and method and apparatus for making same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disc and method and apparatus for making same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-790587