EP0447885A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Polishing method of goods and abrasive pad therefor
Assignee: Fujimi Inc
•
Filing: 1991-03-07
•
Granted: —
•
Expires: 2011-03-07
Abstract
Abstract A polishing method and abrasive pads used to polish of abrade, for example, lenses. The pad is manufactured with an abrasives such as grains of the mean diameter: 0.5 - 10 µm of alumina, zirconium oxide, tin oxide, and cerium oxide, a kind of water-soluble cellulose ether seleted from the group of hydroxypropylmethyl and the like, and a kind of insolubilizing agent such as glyoxal, citric acid, and the like. The substances above are blended and coated on a sheet-like substrate. In polishing process, only water is poured between the rotating abrasives pad and goods to be polished.
Inventors
- 👤 Gisaburo C/O Fujimi Abrasives Co. Ltd. Takizawa
- 👤 Tetsushi C/O Fujimi Abrasives Co. Ltd. Senda
- 👤 Shiro C/O Fujimi Abrasives Co. Ltd. Miura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 17:41
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/01
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
57 words
A polishing method comprising of the steps of contacting an abrasive pad consisting of substrate and a blend having abrasives, water-soluble cellulose ether and insolubilizing agent coated on a face of the substrate like a sheet with goods through its face, and supplying water between said goods and the abrasive pad in order to polish the goods.
Claim 2
Dependent Claim
20 words
The polishing method according to claim 1, wherein the mean grain diameter of said abrasives is 0.5 - 10 µm.
Claim 3
Dependent Claim
25 words
The polishing method according to Claim 2, wherein said abrasives is one selected from the group of alumina, zirconium oxide, tin oxide, and cerium oxide.
Claim 4
Dependent Claim
29 words
The polishing method according to one of Claims 1 - 3, wherein the weight ratio of said water-soluble cellulose ether relative to the abrasives is 1 - 8 %.
Claim 5
Dependent Claim
26 words
The polishing method according to Claim 4, wherein said water-soluble cellulose ether is one selected from the group of hydroxypropylmethyl cellulose, methyl cellulose and hydroxyethylmethyl cellulose.
Claim 6
Dependent Claim
25 words
The polishing method according to one of Claims 1 - 5, wherein the weight ratio of the insolubilizing agent to abrasives is 0.2 - 1.5%.
Claim 7
Dependent Claim
30 words
The polishing method according to Claim 6, wherein said in solubilizing agent is one selected from the group of glyoxal, citric acid, tannic acid, urea-formalidehyde resin and methylol melamine resin.
Claim 8
Dependent Claim
40 words
The polishing method according to one of Claims 1 - 7, wherein said substrate is one selected from the group of flocked fabric, flocked synthetic resin film, non-woven fabric, synthetic paper, artificial leather, woven fabric, synthetic resin film, and sponge.
Claim 9
Dependent Claim
25 words
An abrasive pad comprising a substrate and a blend consisting of abrasives, water-soluble cellulose ether, and insolubilizing agent, which blend being coated on the substrate.
Claim 10
Dependent Claim
20 words
The abrasive pad according to Claim 9, wherein the mean grain diameter of said abrasives is 0.5 - 10 µm.
Claim 11
Dependent Claim
25 words
The abrasive pad according to Claim 10, wherein said abrasives is one selected from the group of alumina, zirconium oxide, tin oxide, and cerium oxide.
Claim 12
Dependent Claim
27 words
The abrasive pad according to one of Claims 9 - 11, wherein the weight ratio of said water-soluble cellulose ether to the abrasives is 1 - 8%.
Claim 13
Dependent Claim
27 words
The abrasive pad according to Claim 12, wherein said Water-soluble cellulose ether is one selected from the group of hydroxypropyl methyl cellulose, methyl cellulose, and hydroxyethylmethyl cellulose.
Claim 14
Dependent Claim
25 words
The abrasive pad according to Claims 9 - 13, wherein the weight ratio of the insolubilizing agent relative to abrasives is 0.2 - 1.5 %.
Claim 15
Dependent Claim
28 words
The abrasive pad according to Claim 14, wherein said hardener is one selected from the group of glyoxal, citric acid, tannic acid, urea-formaldehyde resin and methylol melamine resin.
Claim 16
Dependent Claim
40 words
The abrasive pad according to one of Claims 9 - 15, wherein said substrate is one selected from the group of flocked fabric, flocked synthetic resin film, non-woven fabric, synthetic paper, artificial leather, woven fabric, synthetic resin film, and sponge.
Claim 17
Dependent Claim
44 words
An abrasive pad comprising a substrate, a blended abrasives consisting of abrasives, water-soluble cellulose ether, and insolubilizing agent coated in a shape of sheet on said substrate, and polyvinyl alcohol film laminated with water or water-soluble adhesive agent on the resultant dried blended abrasives.
Claim 18
Dependent Claim
28 words
The abrasive pad according to Claim 17, wherein the thickness of said polyvinyl alcohol film is 10 - 40 µm and the saponification number is 80 - 90.
Claim 19
Dependent Claim
20 words
The abrasive pad according to Claim 17, wherein the thickness of said water-soluble adhesive layer is 5 - 30 µm.
Claim 20
Dependent Claim
18 words
The abrasive pad according to Claim 17, wherein said pad is adhered to the pressure sensitive adhesive layer.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.