Claims
- 1. In the combination of a tool having a relatively rigid, unyielding base substrate having a work surface of predetermined non-planar contour and configuration, and a grinding or polishing member adhesively mounted on and conforming to said tool work surface, the improvement comprising
- an essentially non-strippable, unreactive, smooth, glossy film affixed to and conforming to said work surface, beneath said member and exhibiting virtually no surface adhesive characteristics, and having a root mean square roughness of less than or equal to 0.1 micron, and
- a layer of adhesive releasably joining together said film and said grinding or polishing member, said adhesive layer having a shear value with respect to said film of at least 0.7 kg./cm.sup.2, a peel strength from about 10 to about 250 grams force per inch width, a tack value of about 15 to 30 cm travel, and a surface tension less than, or equal to, the surface energy of said film.
- 2. The combination as defined in claim 1, wherein said film is sheet polymer.
- 3. The combination as defined in claim 2, wherein said sheet polymer is a polyester.
- 4. The combination as defined in claim 1, wherein the surface tension of said adhesive layer is in the range of about 45 to 100 dynes/cm, and the surface energy of said film is in the range of about 40 to 200 dynes/cm.
- 5. The combination as defined in claim 1, wherein
- said grinding or polishing member comprises a flexible substrate having abrasive particles projecting from one surface thereof, and having said adhesive layer secured to and covering the opposite surface thereof,
- said adhesive layer presenting at the side thereof remote from said substrate a pressure-sensitive, tacky surface having a surface tension in the range of 45 to 100 dynes/cm.
- 6. The combination as defined in claim 5 wherein said adhesive layer comprises a liquid plasticizer and a polymer selected from the group consisting of granular polyvinyl chloride or polyvinyl chloride-ethylene copolymer, an acrylic latex compound modified by hydroxyethyl cellulose, and a polyurethane elastomer.
- 7. An abrasive lens grinding or polishing pad, comprising
- a flexible substrate having abrasive particles projecting from one surface thereof,
- a flexible base layer secured by a first layer of adhesive to the opposite side of said substrate, and
- a second, elastomeric layer of adhesive secured at one side to and covering said base layer, and having at its opposite side a tacky surface for releasably securing the pad to the smooth surface of a lapping tool, or the like,
- said second layer of adhesive comprising a liquid plasticizer and a polymer selected from the group consisting of granular polyvinyl chloride, or polyvinyl chloride-ethylene copolymer an acrylic latex compound modified by hydroxyethyl cellulose, and a polyurethane elastomer, and said tacky surface having a surface tension in the range of 45 to 100 dynes/cm, and a peel strength of about 250 grams force per/inch width, and tack value of about 15 to 30 cm. travel.
- 8. The combination of a lapping tool having a work surface, and an abrasive lens grinding or polishing pad of the type defined in claim 7 releasably adhered by the tacky surface thereof to said tool work surface, wherein
- said tool work surface has a root mean square roughness of less than or equal to 0.1 micron, and
- said second adhesive layer has a shear value with respect to said work surface of at least 0.7 kg./cm.sup.2.
- 9. The combination as defined in claim 8, wherein said work surface has a surface energy in the range of about 40 to 200 dynes/cm.
RELATED APPLICATIONS
This application is a continuation-in-part of our pending U.S. application Ser. No. 06/843,469, filed Mar. 24, 1986, now abandoned, for Two Component Adhesive System For Maintaining Flexible Workpiece To A Rigid Substrate.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4558542 |
Marton |
Dec 1985 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
843469 |
Mar 1986 |
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