# US 10,478,940 B2 · Manufacturing method of polishing layer, and polishing method

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- Number: US 10,478,940 B2
- Document ID: US10478940B2
- Status: Granted
- Kind: B2
- Application number: 15/635,210
- Filed: 2017-06-28
- Published: 2018-01-11
- Granted: 2019-11-19
- Earliest claimed: 2016-07-05
- Assignees: IV Technologies CO., Ltd.
- Applicants: IV Technologies CO., Ltd.
- Inventors: Yu-Hao Pan; Ching-Huang Shen; Yu-Piao Wang
- Web page: https://patentgrep.com/patent/US10478940B2

## CPC

- B24B 37/26: characterised by the shape of the lapping pad surface, e.g. grooved
- B24B 37/22: characterised by a multi-layered structure
- B24D 18/0009: {using moulds or presses}
- B24D 18/0045: {by stacking sheets of abrasive material}
- B29C 43/021: {characterised by the shape of the surface}
- B29C 43/36: Moulds for making articles of definite length, i.e. discrete articles
- B29C 2043/023: {having a plurality of grooves}
- B29C 2043/3634: {having specific surface shape, e.g. grooves, projections, corrugations}
- B29C 2793/0027: Cutting off
- B29C 2793/009: after shaping
- B29L 2009/00: Layered products
- 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
- B24D: TOOLS FOR GRINDING, BUFFING OR SHARPENING (abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls B24B31/14; honing tools B24B33/08; lapping tools B24B37/11)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES

## Abstract

A manufacturing method of a polishing layer is provided. First, a mold for which the mold cavity has a contour pattern is provided, and the cross section of the contour pattern along a direction includes a plurality of recessions and at least one concavity portion, wherein the at least one concavity portion is disposed on the bottom of at least one of the recessions. A polymer material is disposed in the mold cavity. The polymer material is cured to form a semifinished product, wherein the cross section of the semifinished product along the direction includes a plurality of polishing portions corresponding to the recessions and at least one protruding portion corresponding to the at least one concavity portion. A flattening process is performed on the semifinished product to remove the at least one protruding portion.

## Claims

### Claim 1

A manufacturing method of a polishing layer, comprising:
providing a mold having a mold cavity, wherein the mold cavity has a contour pattern, and a cross section of the contour pattern along a direction comprises a plurality of recessions and at least one concavity portion, each of the recessions has a bottom, and the at least one concavity portion is disposed on the bottom of at least one of the recessions;
disposing a polymer material in the mold cavity;
curing the polymer material to form a semifinished product, wherein a cross section of the semifinished product along the direction comprises a plurality of polishing portions corresponding to the recessions and at least one protruding portion corresponding to the at least one concavity portion; and
performing a flattening process on the semifinished product to remove the at least one protruding portion.

### Claim 2 (depends on 1)

The manufacturing method of the polishing layer of claim 1, wherein the mold comprises an upper die and a lower die, and the upper die or the lower die has the contour pattern.

### Claim 3 (depends on 1)

The manufacturing method of the polishing layer of claim 1, wherein the mold comprises an upper die and a lower die, and the upper die or the lower die has a die body and a molding die disposed on the die body, and the molding die has the contour pattern.

### Claim 4 (depends on 1)

The manufacturing method of the polishing layer of claim 1, wherein the mold comprises an upper die, a lower die, and a patterned material layer disposed on the upper die or the lower die, the patterned material layer has the contour pattern, and the patterned material layer and the polymer material have at least one different material property.

### Claim 5 (depends on 1)

The manufacturing method of the polishing layer of claim 1, wherein the flattening process comprises mechanical cutting, chemical etching, laser processing, or abrasion.

### Claim 6 (depends on 1)

The manufacturing method of the polishing layer of claim 1, wherein on a cross section of the direction, a width of the at least one concavity portion is less than or equal to a width of the bottom of the corresponding recession.

### Claim 7 (depends on 1)

The manufacturing method of the polishing layer of claim 1, wherein on a cross section of the direction, the bottoms of the recessions are coplanar and are not coplanar with a bottom of the at least one concavity portion.

### Claim 8 (depends on 1)

The manufacturing method of the polishing layer of claim 1, wherein a method of disposing the polymer material in the mold cavity comprises a perfusion method or a compression molding method.

### Claim 9 (depends on 8)

The manufacturing method of the polishing layer of claim 8, wherein when the polymer material is disposed in the mold cavity via the perfusion method, the at least one concavity portion is disposed at a flow field end during a perfusion of the polymer material.

### Claim 10 (depends on 8)

The manufacturing method of the polishing layer of claim 8, wherein when the polymer material is disposed in the mold cavity via the mold compression method, the at least one concavity portion is disposed in a peripheral region of the contour pattern.

### Claim 11 (depends on 1)

The manufacturing method of the polishing layer of claim 1, wherein on a cross section of the direction, the at least one concavity portion comprises a plurality of concavity portions, and the concavity portions are disposed on the bottoms of the recessions.

### Claim 12 (depends on 1)

The manufacturing method of the polishing layer of claim 1, wherein a shape of the at least one concavity portion is a hole or a long groove.