# US 2008/0166953 A1 · Adhesive Tape For Fixing Lens and Method For Processing Lens Using the Same

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- Number: US 2008/0166953 A1
- Document ID: US20080166953A1
- Status: Published application
- Kind: A1
- Application number: 11/576,762
- Filed: 2005-10-07
- Published: 2008-07-10
- Earliest claimed: 2004-10-15
- Assignees: Musashi Chemicals Industry Co., Ltd
- Inventors: Fumikazu Yamada
- Web page: https://patentgrep.com/patent/US20080166953A1

## CPC

- B24B 13/005: Blocking means, chucks or the like; Alignment devices
- C09J 7/22: Plastics; Metallised plastics
- C09J 7/26: Porous or cellular plastics
- C09J 7/38: Pressure-sensitive adhesives [PSA]
- C09J 2301/124: the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape
- C09J 2400/263: in the substrate
- Y10T 428/1476: Release layer
- B24B: MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw-threads B23G1/36; by electro-erosion B23H; abrasive or related blasting B24C; tools for grinding, buffing or sharpening B24D; polishing compositions C09G1/00; abrasives C09K3/14; electrolytic etching or polishing C25F3/00; grinding arrangements for use on assembled railway tracks E01B31/17); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An adhesive tape, interposed between a lens to be processed and a holding jig when the lens is mounted in a lens processing machine, which has a plastic foam with holes opening in an adhering surface and an adhesive layer formed on the adhering surface of the plastic foam, and having a suction function for providing suction to the adhering surface together with elastic restoration after the plastic foam is deformed under compression. The adhesive tape of the present invention also exhibits sufficient shear adhesive strength in relation to a lens that has received surface processing and can realize precise lens processing.

## Claims

### Claim 1

An adhesive tape for fixing a lens interposed between the lens to be processed and a holding jig at a time when the lens to be processed is mounted in a lens processing machine, the adhesive tape comprising:
a plastic foam material having openings formed in an adhering surface; and
an adhesive layer formed on the adhering surface of the plastic foam,
wherein the adhering surface has a suction function for providing suction to the adhering surface in accordance with elastic restoration after the plastic foam material is deformed under compression.

### Claim 2 (depends on 1)

The adhesive tape for fixing the lens according to claim 1, wherein the adhesive layer is formed on both sides of the plastic foam material.

### Claim 3 (depends on 1)

The adhesive tape for fixing the lens according to claim 1, wherein the adhesive layer is formed on one side of the plastic foam material.

### Claim 4 (depends on 1)

The adhesive tape for fixing the lens according to claim 1, wherein a combined thickness of the plastic foam and the adhesive layer is less than or equal to 5 mm.

### Claim 5 (depends on 1)

The adhesive tape for fixing the lens according to claim 1, further comprising a peeling sheet formed in a separable manner in contacting the adhesive layer, the adhesive sheet which is removed from the adhesive layer at a time of use.

### Claim 6 (depends on 1)

The adhesive tape for fixing the lens according to claim 1, wherein the adhesive tape has a shape corresponding to an external shape of the lens to be processed.

### Claim 7

A lens processing method using adhesive tape comprising:
a plastic foam material having openings formed at an adhering surface; and
an adhesive layer formed on the adhering surface of the plastic foam,
wherein the adhesive tape for fixing a lens has a suction function for providing suction to the adhering surface in accordance with elastic restoration after the plastic foam material is deformed under compression, at a time when the lens to be processed is fixed to a holding jig via the adhesive tape for fixing the lens at a time when a machining process is executed.

### Claim 8 (depends on 7)

The lens processing method according to claim 7, wherein the machining process is a grooving or chamfering process by a grindstone.