Patent ID: 6149750
Filing Date: 2000-11-21
Classification: B24B,C09J,Y10T

Abstract:
A method of adhering a lens block to a compound surface of an ophthalmic lens blank, comprising the steps of:applying the pressure-sensitive adhesive portion of a section of a conformable tape to the entirety of a compound surface of an ophthalmic lens blank, wherein the tape comprises a polymer backing having a first and a second major surfaces; and a pressure-sensitive adhesive on the second major surface of the polymer backing, wherein the tape is wound into a roll without a liner and exhibits a maximum unwind force of less than 165 g/cm width;conforming the tape to the surface so that the tape is essentially free from wrinkles, air bubbles and other discontinuities in the bond between the tape and the lens blank; andapplying a lens block to at least a portion of the polymer backing layer of the tape.