CN101491890B - Porous abrasive disks and preparation thereof - Google Patents
Porous abrasive disks and preparation thereof Download PDFInfo
- Publication number
- CN101491890B CN101491890B CN2008101444235A CN200810144423A CN101491890B CN 101491890 B CN101491890 B CN 101491890B CN 2008101444235 A CN2008101444235 A CN 2008101444235A CN 200810144423 A CN200810144423 A CN 200810144423A CN 101491890 B CN101491890 B CN 101491890B
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- CN
- China
- Prior art keywords
- petinet
- layer
- resin
- thermosetting resin
- abrasive disks
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
- B24D18/0045—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for by stacking sheets of abrasive material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
- B24D3/28—Resins or natural or synthetic macromolecular compounds
Abstract
The invention relates to a porous abrasive disk and method for manufacturing the same. The abrasive disk comprises laminated damp-proof paper, more than one carboform leno layer permeating a first thermosetting resin and more than one chemical fibre leno layer for dispersing coating abrasive after permeating a second thermosetting resin. As a result of the structure of leno layer, the invention has the advantages of porosity, stable size, excellent spin burst strength and impact-resistant strength, safety, environment protection and benefit for abrading work.
Description
Technical field
It is outstanding to the present invention relates to a kind of dimensional stability, rotation breakdown strength and impact strength, the porous abrasive disks of safety, environmental protection and manufacture method thereof.
Background technology
Abrasive disk comprises glass fabric layer structure mostly.Fig. 1 is the cross section structure of the abrasive disk that contains the glass fabric layer made of utilization traditional handicraft.Shown in Figure 1 with the traditional abrasive disk of glass fabric as strengthening material, be on the plate-like glass fabric layer of impregnation thermosetting resin, to spray the slurry that contains abrasive material, through predrying, after obtaining the glass fabric layer of scatter coated abrasive material, stacked black brown paper and 2 above-mentioned glass fabric layers add hot pressing and form on the die frame of curve form.
But, this traditional impact strength and the rotation breakdown strength of abrasive disk in grinding technics is low, the corner of abradant surface or rapid impact can produce fragment, workman's operation there is potential safety hazard, and owing to produce glass fiber dust, can cause workman's skin that burning sensation or problem such as harmful, not environmental protection are arranged.
Summary of the invention
Therefore, the objective of the invention is to, provide a kind of dimensional stability, rotation breakdown strength and impact strength outstanding, thereby can significantly reduce workman's the security incident and the abrasive disk and the manufacture method thereof of public hazards (labor pollution) problem.
Abrasive disk comprises: 1) moistureproof paper, 2) an above carbon fiber petinet layer of impregnation first thermosetting resin, and 3) an above chemical fibre petinet layer of scatter coated abrasive material behind impregnation second thermosetting resin.
The manufacture method of described porous abrasive disks is characterized in that, this method comprises moistureproof paper, an above carbon fiber petinet layer and an above chemical fibre petinet layer, through stacked, add hot pressing the said structure layer mutually combined.
Abrasive disk of the present invention is owing to have petinet layer structure, has porous, need not to contain in the past, employed glass fabric layer can possess outstanding dimensional stability, impact strength and rotation breakdown strength, thereby can eliminate the potential safety hazard of workman's operation, and do not produce glass fiber dust, thereby can not cause stimulation etc. to workman's skin, safety, environmental protection are of value to grinding operation.
Description of drawings
Fig. 1 is the sectional view of traditional abrasive disk that contains the glass fabric layer;
Fig. 2 is the sectional view of the abrasive disk made according to an embodiment of the invention;
Fig. 3 is the ideograph that is coated with the different shape abrasive material that is covered with thermosetting resin;
Fig. 4 is an ideograph of fabric being carried out continuously the device of resin impregnation coating, abrasive material sprinkling and baking operation;
The die frame of the curve form that Fig. 5 uses when making abrasive disk of the present invention and the ideograph of mould plasticity plate.
The specific embodiment
In order to achieve the above object, the invention provides and a kind ofly contain stacked 1) moistureproof paper (dampproofpaper), 2) one of impregnation first thermosetting resin above carbon fiber leno (leno) tissue layer, and the 3) abrasive disk of an above chemical fibre petinet layer of scatter coated abrasive material behind impregnation second thermosetting resin.
The feature of abrasive disk of the present invention is, has stacked moistureproof paper, an above carbon fiber petinet layer of impregnation first thermosetting resin, and an above chemical fibre petinet layer structure of scatter coated abrasive material behind impregnation second thermosetting resin, owing to the petinet layer is arranged, has porous.Preferred forms is, abrasive disk of the present invention should integral body be curve form, stacks gradually moistureproof paper, the first chemical fibre petinet layer, carbon fiber petinet layer and the second chemical fibre petinet layer at the convex surface of above-mentioned curved surface.In addition, above-mentioned carbon fiber petinet layer and chemical fibre petinet layer can be more than the alternately laminated secondaries.Fig. 2 is the cross section structure of the abrasive disk made according to an embodiment of the invention (plate that iron axle sleeve plate will be loaded onto when abrasive disk is applied to grinding technics usually though made diagram, is not essential constituent, does not therefore explain in addition).
The moistureproof paper that uses among the present invention should have 25 to 40g/m
2Weight and 0.03 to 0.07mm thickness, when relative humidity (RH, Relative Humidity) 40 to 80% times is placed 24 hours, show the low rate of perviousness below 3%.
The carbon fibre fabric that uses among the present invention, should be in thermosetting resin (first thermosetting resin) according to 120 to 140g/m
2Amount impregnation certain hour after, made in predrying 2 to 4 minutes down at 80 to 140 ℃, the fibre coarseness, 200 with G75 1/4～H45 1/3 * G75 1/4～H45 1/3 (organizine * tram) tex/yarn is to 300g/m
2Leno (leno) tissue of weight and 6～12 * 6～12 (organizine * tram) count/inch.At this moment, above-mentioned G and H are meant that respectively average diameter is 8.89～10.1 μ m and 10.16～11.42 μ m, and tex is meant 1000m quality of fiber (g).
First and second chemical ﹠ blended fabric that uses among the present invention can be identical or different, can be in thermosetting resin (second thermosetting resin) according to 120 to 160g/m
2Amount impregnation certain hour after, 80 to 140 ℃ predrying 2 to 4 minutes down, then according to 200 to 270g/m
2Amount spray abrasive material after, made in predrying 5 to 10 minutes down at 70 to 100 ℃.Above-mentioned abrasive material should be coated with and be covered with thermosetting resin (the 3rd thermosetting resin).Fig. 3 is the ideograph that is coated with the abrasive material of the different shape that is covered with thermosetting resin.In addition, in order further to improve the caking ability of abrasive material, can be after handling through the second thermosetting resin impregnation, before spraying abrasive material, increase is coated with the operation that is covered with the 4th thermosetting resin to chemical ﹠ blended fabric.
Above-mentioned chemical ﹠ blended fabric can be made of polyester, nylon, vinylon (polyvinyl alcohol (PVA)), polyvinylidene chloride, polyvinyl chloride, acryl, aromatic polyamide, acetate fiber, cotton, fiber crops, viscose (viscose), thin,tough silk, wool or their mixed yarn.
The chemical ﹠ blended fabric that uses among the present invention should have double-deck leno (leno) tissue of fibre coarseness and 12～18 * 6～14 (organizine * tram) count/inch of 6/2～14/2 * 6/2～14/2 (organizine * tram) s/yarn.At this moment, for the thickness combination, more suitable fibre coarseness with 12/2～14/2 * 8/2～10/2 (organizine * tram) s/yarn.
The above-mentioned first, second, third and the 4th thermosetting resin can be selected from phenolic resins, mylar, epoxy resin, Lauxite, melamine resin, diallyl phthalate prepolymer (DAPP) resin respectively, through maleimide-cyanate resin and the combination that is made of their mixture.First, second and the 4th thermosetting resin are preferably the liquid phenolic resin or the liquid DAPP resin of the viscosity (under 25 ℃) of amount of solid content with 40 to 60 quality % and 300 to 600cps.The 3rd thermosetting resin that uses during coated abrasives, being preferably Powdered phenolic resins (the many aldehyde of phenol few (Novolak) type) content accounts for 55～70 quality % and liquid phenolic resin (few phenol many (Rezole) type of aldehyde) content and accounts for the mixture of 30～45 quality %, especially, above-mentioned liquid phenolic resin should have the amount of solid content of 60 to 75 quality % and 300 to 600cps viscosity (under 25 ℃).
Abrasive disk of the present invention replaces emery cloth with the abrasive material of scatter coated, and above-mentioned abrasive components is preferably aluminium oxide (Al
2O
3), carborundum (SiC), aluminium oxide-zirconium oxide (AZ), pottery (sol-gel), diamond or their mixture.Above-mentioned abrasive material can have the size of #16 to #60, can be " P " or " F " specification.
According to most preferred embodiment of the present invention, integral body is the abrasive disk of the present invention of curve form, and when abrasive disk being buckled on the ground, the connecting line at the edge of abrasive disk and inboard concave surface center and ground are 5 to 9 ° of angles, and this shape can be grinding operation and facilitates.
The method for making of abrasive disk of the present invention is, with moistureproof paper, an above carbon fiber petinet layer and an above chemical fibre petinet stacked after, through adding hot pressing, the said structure layer is mutually combined.
A concrete Production Example of abrasive disk of the present invention is, after stacking gradually the above-mentioned first chemical fibre petinet layer, carbon fiber petinet layer, the second chemical fibre petinet layer and moistureproof paper on the curve form die frame shown in Figure 5, after putting the mould plasticity plate of curve form shown in Figure 5 more in the above, apply 4 to 8kgf/cm
2, be preferably 5 to 7kgf/cm
2Pressure, and at 120 to 180 ℃, be preferably in 140 to 160 ℃ the baking box heating 4 to 8 hours, be preferably 4 to 6 hours, melt and contain the thermosetting resin that is dipped in each fiber and the abrasive material, thereby structure sheaf is bondd mutually.At this moment, above-mentioned moistureproof paper, carbon fiber petinet layer and chemical fibre petinet layer should cut into the plate-like of required size in advance.
The mould plasticity plate that uses among the present invention should have the curved surface angle identical with die frame.
The porous abrasive disks of so making of the present invention, have outstanding dimensional stability, impact strength and rotation breakdown strength, thereby can eliminate the potential safety hazard of workman's operation, and do not produce glass fiber dust, thereby can not cause stimulation etc. to workman's skin, safety, environmental protection are of value to grinding operation.
Below, specify the present invention according to following embodiment.But following embodiment is an example of the present invention, and scope of the present invention is not limited thereto.
[embodiment]
Embodiment 1
Has 25g/m with 1
2The moistureproof paper of weight and 0.05mm thickness (Ji-Sung cultural industry company product) cuts into the size of external diameter 112mm and internal diameter 23mm; With 2 in phenolic resins KRD-745 (can swell oiling company product) according to 138.0 ± 1.0g/m
2The amount impregnation after the dacron fabric (Hwail industrial corporation product) of double-deck leno tissue of dry fibre coarseness and 16 * 8 (organizine * tram) count/inch that make, that have 12/2 * 8/2 (organizine * tram) s/yarn; And the carbon fibre fabric (Korea S Fiber company product) of the leno tissue of dry fibre coarseness and 8 * 8 (organizine * tram) count/inch that make, that have H45 1/3 * H45 1/3 (organizine * tram) tex/yarn behind 1 the same impregnation phenolic resins, cut into the size of external diameter 180mm and internal diameter 23mm respectively.
Then, the Al of " F " specification that #24 particle and #30 particle are mixed by 30: 70 mass ratio
2O
3100g, Powdered phenolic resins (Novolak) 1364K (Kangnam Chemical company product) 13.5g and liquid phenolic resin (Rezole) TD-2207 (solid component content 70%, Kangnam Chemical company product) 9.3g mixes stirring, makes the abrasive material that applies phenolic resins.Utilize device shown in Figure 4, polyester fiber petinet with the impregnation phenolic resins of the plate-like that makes in advance, after applying according to the amount impregnation of 4.0g/7inch in phenolic resins KRD-745 (can swell oiling company product) with the machine of smearing, spray above-mentioned abrasive material in its one side according to the amount of 40.0g/7inch, predrying by dryer, obtain the polyester fiber petinet of scatter coated abrasive material.
At die frame (when being buckled in abrasive disk on the ground, the connecting line at the edge of abrasive disk and inboard concave surface center and ground are 6 ° of angles) on stack gradually 1 of 1 of above-mentioned dacron fabric, 1 of above-mentioned carbon fibre fabric, 1 of above-mentioned dacron fabric and above-mentioned moistureproof paper, put mould plasticity plate more in the above, apply 6.0kgf/cm
2Pressure after, duplexer is put into 160 ± 5 ℃ electric oven, be heating and curing 6 hours, make porous abrasive disks (seeing abrasive disk cross section structure shown in Figure 2).At this moment, the mould plasticity plate of use has the curved surface angle identical with die frame (6 °).
Embodiment 2
Except with dacron fabric and carbon fibre fabric, respectively in phenolic resins KRD-745 according to 150.0 ± 1.0g/m
2The amount impregnation, and dacron fabric has outside the double-deck leno tissue of 10 * 10 (organizine * tram) count/inch, other operations of making porous abrasive disks are identical with the foregoing description 1.
Embodiment 3
Except with dacron fabric and carbon fibre fabric, respectively in phenolic resins KRD-745 according to 127.0 ± 1.0g/m
2The amount impregnation, and dacron fabric has outside the fibre coarseness of 12/2 * 12/2 (organizine * tram) s/yarn, other operations of making porous abrasive disks are identical with the foregoing description 1.
Embodiment 4
Except replacing with nylon fiber fabric (Hwail industrial corporation product) the dacron fabric, other operations of making porous abrasive disks are identical with the foregoing description 1.
Embodiment 5
Except replacing dacron fabric with vinylon (polyvinyl alcohol) fabric (Hwail industrial corporation product), and with vinal fabric and carbon fibre fabric, respectively in phenolic resins KRD-745 according to 140.0 ± 1.0g/m
2The amount impregnation outside, other operations of making porous abrasive disks are identical with the foregoing description 1.
Embodiment 6
Except replace with acryl fabric (Hwail industrial corporation product) dacron fabric and, with acryl fabric and carbon fibre fabric respectively in phenolic resins KRD-745 according to 135.0 ± 1.0g/m
2The amount impregnation outside, other operations of making porous abrasive disks are identical with the foregoing description 1.
Comparative example 1
Has 25g/m with 1
2The moistureproof paper of weight and 0.05mm thickness (Ji-Sung cultural industry company product) cuts into the size of external diameter 112mm and internal diameter 23mm; With 2 in phenolic resins KRD-745 according to 138.0 ± 1.0g/m
2The amount impregnation after the glass fabric No.389 (Korea S Fiber company product) of leno tissue of dry fibre coarseness and 8 * 8 (organizine * tram) count/inch that make, that have H45 1/4 * H45 1/4 (organizine * tram) tex/yarn, cut into the size of external diameter 180mm and internal diameter 23mm respectively.
Then, the Al of " F " specification that #24 particle and #30 particle are mixed by 30: 70 mass ratio
2O
3100g, Powdered phenolic resins (Novolak) 1364K (Kangnam Chemical company product) 13.5g and liquid phenolic resin (Rezole) TD-2207 (amount of solid content 70%, Kangnam Chemical company product) 9.3g mixes stirring, makes the abrasive material that applies phenolic resins.Glass fabric with the impregnation phenolic resins of the plate-like that makes in advance, after applying according to the amount impregnation of 4.0g/7inch in phenolic resins KRD-745 (can swell oiling company product) with the machine of smearing, after its two sides (front and back) sprays above-mentioned abrasive material by the amount of 30.0g/7inch respectively, air dry obtains the glass fabric of scatter coated abrasive material.
On die frame (when being buckled in abrasive disk on the ground, the connecting line and the ground at the edge of abrasive disk and inboard concave surface center are 6 ° of angles), stack gradually 1 of 2 of above-mentioned glass fabrics and above-mentioned moistureproof paper, put mould plasticity plate more in the above, apply 6.0kgf/cm
2Pressure after, duplexer is put into 160 ± 5 ℃ electric oven, be heating and curing 6 hours, make abrasive disk (seeing abrasive disk cross section structure shown in Figure 1).At this moment, the mould plasticity plate of use has the curved surface angle identical with die frame (6 °).
Comparative example 2
Make the dacron fabric of impregnation phenolic resins of 3 plate-likes with the method identical with the foregoing description 1 after, 2 in only giving 3 are sprayed abrasive materials, obtain the dacron fabric of 2 scatter coated abrasive materials.
Afterwards, except the dacron fabric with impregnation phenolic resins replaces the carbon fibre fabric of impregnation phenolic resins, other operations of making porous abrasive disks are identical with the foregoing description 1.
Test example: physical property test
To the abrasive disk of making in embodiment 1 to 6 and the comparative example 1,2, measure impact strength, rotation breakdown strength, dimensional stability respectively, to the excitant and service time (life-span) of workman's skin, result such as table 1.
Table 1
Shown in above-mentioned table 1, the abrasive disk of making among the embodiment 1 to 6 more outstanding impact strength, rotation breakdown strength and dimensional stability are all arranged, and the impact strength of the abrasive disk of making in the comparative example 1,2 is low, especially the abrasive disk of making in the comparative example 1 has excitant to workman's skin.
Claims (13)
1. porous abrasive disks, it is characterized in that, this abrasive disk comprises: 1) moistureproof paper, 2) one of impregnation first thermosetting resin above carbon fiber petinet layer, described carbon fiber petinet has the fibre coarseness, 200 of G751/4～H451/3 * G751/4～H451/3 (organizine * tram) tex/yarn to 300g/m
2The leno tissue of weight and 6～12 * 6～12 (organizine * tram) count/inch; At this moment, G and H mean that respectively average diameter is 8.89～10.15 μ m and 10.16～11.42 μ m, and 3) an above chemical fibre petinet layer of scatter coated abrasive material behind impregnation second thermosetting resin.
2. porous abrasive disks as claimed in claim 1 is characterized in that, described abrasive disk integral body is curve form, stacks gradually moistureproof paper, the first chemical fibre petinet layer, carbon fiber petinet layer and the second chemical fibre petinet layer at the convex surface of above-mentioned curved surface.
3. porous abrasive disks as claimed in claim 2 is characterized in that, when being buckled in described abrasive disk on the ground, the connecting line at the edge of abrasive disk and inboard concave surface center and ground are 5 to 9 ° of angles.
4. porous abrasive disks as claimed in claim 1 is characterized in that described abrasive material is applied by the 3rd thermosetting resin.
5. porous abrasive disks as claimed in claim 1 is characterized in that, described chemical fibre petinet before coated abrasives, is coated with earlier and is covered with the 4th thermosetting resin after handling through the second thermosetting resin impregnation.
6. porous abrasive disks as claimed in claim 1, it is characterized in that described chemical fibre petinet is made of polyester, nylon, vinylon (polyvinyl alcohol), polyvinylidene chloride, polyvinyl chloride, acryl, aromatic polyamide, acetate fiber, cotton, fiber crops, viscose, thin,tough silk, wool or their mixed yarn.
7. porous abrasive disks as claimed in claim 1, it is characterized in that described chemical fibre petinet has the double-deck leno tissue of fibre coarseness and 12～18 * 6～14 (organizine * tram) count/inch of 6/2～14/2 * 6/2～14/2 (organizine * tram) s/yarn.
8. porous abrasive disks as claimed in claim 7 is characterized in that, described chemical fibre petinet has the fibre coarseness of 12/2～14/2 * 8/2～10/2 (organizine * tram) s/yarn.
9. porous abrasive disks as claimed in claim 4, it is characterized in that described first, second, third thermosetting resin is selected from phenolic resins, mylar, epoxy resin, Lauxite, melamine resin, diallyl phthalate prepolymer resin, through maleimide-cyanate resin and the combination that is made of their mixture.
10. porous abrasive disks as claimed in claim 9 is characterized in that, described the 3rd thermosetting resin is that Powdered phenolic resin content accounts for the mixture that 55～70 quality % and liquid phenolic resin content account for 30～45 quality %.
11. the manufacture method of porous abrasive disks as claimed in claim 1 is characterized in that, this method comprises moistureproof paper, an above carbon fiber petinet layer and an above chemical fibre petinet layer, through stacked, add hot pressing the said structure layer mutually combined.
12. the manufacture method of porous abrasive disks as claimed in claim 11 is characterized in that, 4 to 8kgf/cm
2Pressure and 120 to 180 ℃ temperature under add hot pressing.
13. as claim 5 porous abrasive disks, it is characterized in that, described first, second, the 4th thermosetting resin is selected from phenolic resins, mylar, epoxy resin, Lauxite, melamine resin, diallyl phthalate prepolymer resin, through maleimide-cyanate resin and the combination that constitutes by their mixture.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020080008136A KR100937857B1 (en) | 2008-01-25 | 2008-01-25 | Porous abrasive disks and preparation thereof |
| KR10-2008-0008136 | 2008-01-25 | ||
| KR1020080008136 | 2008-01-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101491890A CN101491890A (en) | 2009-07-29 |
| CN101491890B true CN101491890B (en) | 2011-03-23 |
Family
ID=39532793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101444235A Expired - Fee Related CN101491890B (en) | 2008-01-25 | 2008-07-29 | Porous abrasive disks and preparation thereof |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5002551B2 (en) |
| KR (1) | KR100937857B1 (en) |
| CN (1) | CN101491890B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101491897B1 (en) * | 2013-02-19 | 2015-02-12 | 인하대학교 산학협력단 | Abrasive tool |
| JP2015199170A (en) * | 2014-04-08 | 2015-11-12 | 学校法人立命館 | polishing tool |
| TWI713526B (en) * | 2016-05-20 | 2020-12-21 | 智勝科技股份有限公司 | Base layer, polishing pad with base layer and polishing method |
| TWI587981B (en) * | 2016-09-02 | 2017-06-21 | Mesh emery cloth with open holes | |
| KR102233399B1 (en) | 2020-07-23 | 2021-03-26 | 주식회사 티유글로벌 | Abrasive disk with improved work efficiency and preparation method thereof |
| CN112276806B (en) * | 2020-10-26 | 2022-02-08 | 东莞金太阳研磨股份有限公司 | Dry-wet dual-purpose sand paper coating sizing material and preparation method and application thereof |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5127027B1 (en) * | 1970-11-02 | 1976-08-10 | ||
| JPS5453389A (en) * | 1977-10-05 | 1979-04-26 | Ogami Mitsuji | Reinforcement for thin resinoid rotary grinding wheel |
| JPS5652670U (en) * | 1979-09-29 | 1981-05-09 | ||
| JPS6056074U (en) * | 1983-09-26 | 1985-04-19 | いすゞ自動車株式会社 | Label for grinding wheel |
| US4949511A (en) | 1986-02-10 | 1990-08-21 | Toshiba Tungaloy Co., Ltd. | Super abrasive grinding tool element and grinding tool |
| JPS62189124A (en) * | 1986-12-27 | 1987-08-18 | Toho Rayon Co Ltd | Manufacture of three-dimensional fiber reinforced resin composite material |
| JPH0266959U (en) * | 1988-11-09 | 1990-05-21 | ||
| JPH03180561A (en) * | 1989-12-06 | 1991-08-06 | Kawasaki Steel Corp | Carbon fiber netlike unit for reinforcing cement mortar and formed mortar body |
| JPH08132348A (en) * | 1994-11-02 | 1996-05-28 | Noritake Dia Kk | Grinding tool for machining curved surface |
| JPH1170474A (en) * | 1997-06-23 | 1999-03-16 | Niyuurejisuton Kk | Rotating grinding wheel |
| JP2003117834A (en) * | 2001-10-03 | 2003-04-23 | Niyuurejisuton Kk | Support body for rotary polishing member and manufacturing method therefor |
| KR200360927Y1 (en) | 2004-05-17 | 2004-09-06 | 태양연마 주식회사 | Back pad of abrasive wheel |
| KR100749049B1 (en) * | 2006-03-21 | 2007-08-14 | 주식회사 썬텍인더스트리 | Back pad for abrasive disks and preparation thereof |
| KR100872507B1 (en) * | 2007-02-28 | 2008-12-08 | 주식회사 썬텍인더스트리 | Abrasive disks and preparation thereof |
-
2008
- 2008-01-25 KR KR1020080008136A patent/KR100937857B1/en active IP Right Grant
- 2008-07-24 JP JP2008190737A patent/JP5002551B2/en not_active Expired - Fee Related
- 2008-07-29 CN CN2008101444235A patent/CN101491890B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009172750A (en) | 2009-08-06 |
| KR20080030961A (en) | 2008-04-07 |
| CN101491890A (en) | 2009-07-29 |
| JP5002551B2 (en) | 2012-08-15 |
| KR100937857B1 (en) | 2010-01-21 |
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