GB1567125A - Cloth suitable for use as a backing in an abrasive product - Google Patents
Cloth suitable for use as a backing in an abrasive product Download PDFInfo
- Publication number
- GB1567125A GB1567125A GB13371/78A GB1337178A GB1567125A GB 1567125 A GB1567125 A GB 1567125A GB 13371/78 A GB13371/78 A GB 13371/78A GB 1337178 A GB1337178 A GB 1337178A GB 1567125 A GB1567125 A GB 1567125A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cloth
- abrasive
- range
- pressure
- grit
- 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
Links
- 239000004744 fabric Substances 0.000 title claims abstract description 124
- 229920000728 polyester Polymers 0.000 claims abstract description 44
- 238000003490 calendering Methods 0.000 claims abstract description 17
- 238000005498 polishing Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 54
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 15
- 239000000853 adhesive Substances 0.000 claims description 14
- 230000001070 adhesive effect Effects 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 11
- 230000003746 surface roughness Effects 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- 229920000742 Cotton Polymers 0.000 claims description 7
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- 239000006061 abrasive grain Substances 0.000 claims description 6
- 229920001568 phenolic resin Polymers 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 235000010216 calcium carbonate Nutrition 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 claims description 4
- 229920003987 resole Polymers 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000003082 abrasive agent Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 239000002223 garnet Substances 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- 239000012790 adhesive layer Substances 0.000 claims description 2
- 230000008021 deposition Effects 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010903 husk Substances 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- -1 F/P 0.94 Chemical compound 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 244000137852 Petrea volubilis Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
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
- B24D11/02—Backings, e.g. foils, webs, mesh fabrics
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Calendering a polyester fabric at a pressure of 110 to 360 kg per linear cm and at a temperature of 100 to 195 DEG C yields a smooth surface on which a fine-grained abrasive can be deposited, in order to produce fine-grained flexible coated abrasive articles for polishing applications. The invention also relates to the polyester fabric thus calendered and to the coated abrasive articles comprising this polyester fabric as a support element.
Description
(54) CLOTH SUITABLE FOR USE AS A BACKING
IN AN ABRASIVE PRODUCT
(71) We, NORTON COMPANY of 1 New
Bond Street, Worcester 6, Massachusetts,
United States of America, a corporation organized under the laws of the State of
Massachusetts, United States of America, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:
This invention relates to a cloth suitable for use as a backing in an abrasive product; and to an abrasive product comprising abrasive grit and a backing that is said cloth.
According to a first aspect of the present invention, there is provided a method of preparing a cloth suitable for use as a backing in an abrasive product, said method comprising subjecting to both pressure and temperature, a cloth woven from polyester yarns, said pressure being in the range 600 to 2000 pounds per lineal inch of cloth, said temperature being in the range 200 to 380"F.
According to a second aspect of the present invention, there is provided a cloth, said cloth having been prepared by said method of said first aspect of the present invention.
According to a third aspect of the present invention, there is provided an abrasive product, comprising abrasive grit; and a backing that is a said cloth of said second aspect of the present invention.
Some examples of cloth in carrying out said method of said first aspect of the present invention are a cloth having a twill weave, a cloth having a sateen weave, and a cloth having a square weave. Conveniently, said polyester yarns comprise staple polyester fibers. For example, said staple polyester fiber yarns may have yarn numbers in the range 1.5 to 3.0 (cotton count). Said polyester yarns may comprise continuous multifilament polyester yarns.
For example, said continuous multifilament polyester yarns may have deniers in the range 100 to 1100 denier. Said cloth to be subjected to said pressure and temperature may have a prefinish. Said cloth to be subjected to said pressure and temperature may have been heat stretched. Said pressure is for example in the range 800 to 1600 pounds per lineal inch. Said temperature is for example in the range 210 to 3800F or for example in the range 230 to 3000F. Said subjecting to pressure and temperature is for example carried out while said cloth is moved at a speed in the range 20 to 75 feet per minute. Said subjecting to pressure and temperature may be carried out by calender roller means.Said cloth before or after said subjecting to pressure and temperature has for example a weight up to 9 ounces per square yard, for instance this weight may be in the range 3.5 to 9.0 ounces per square yard. Said cloth after said subjecting to pressure and temperature has for example an elongation load profile (as hereinafter defined) in the warp direction of not more than 6 X" at 50 pounds per inch of width, not more than 9% at 100 pounds per inch of width, and not more than 15% at 200 pounds per inch of width. At least one side of said cloth after said subjecting to pressure and temperature may have a surface roughness of for example not more than 2500 microinches, for instance this surface roughness may be not more than 200 microinches.
A said cloth according to said second aspect of the present invention is preferably a cloth woven from polyester yarns, this cloth having a weight up to 9 ounces per square yard, an elongation load profile (as hereinafter defined) in the warp direction of not more than 6% at 50 pounds per inch of width, not more than 9% at 100 pounds per inch of width, and not more than 15% at 200 pounds per inch of width, and at least one side of said cloth has a surface roughness of not more than 2500 microinches. This clotli may have a twill weave, a sateen weave, or a square weave, for example. Said polyester yarns may comprise staple polyester fibers, for instance such yarns having yarn numbers in the range 1.5 to 3.0 (cotton count). Said polyester yarns may comprise continuous multifilament polyester yarns, for instance such yarns having deniers in the range 100 to 1100 denier.Said cloth may have a prefinish. Said cloth may have been heat stretched. Said surface roughness may be not more than 200 microinches. Said cloth may have been calendered by calender roller means.
Examples of said abrasive product according to said third aspect of the present invention are that product when in the form of an abrasive sheet, belt or disc. Said abrasive grit may have grit size in the range 100 to 600, for example. Said abrasive grit may comprise at least one of silicon carbide, aluminium, oxide, co-fused alumina zirconia, garnet, flint, for example. A front size may be applied to a surface of said sheet. A maker adhesive may be applied to said front size; and said abrasive grit applied to said maker adhesive. A maker adhesive may be applied to said roughened surface of said sheet; and said abrasive grit applied to said maker adhesive. A size coat may be applied to said abrasive grit. A back size may be applied to said backing.
The present invention can enable production of e.g. a smooth surface on commercially available polyester woven cloth, for coated abrasive use, suitable for the production of fine grit products, e.g.
products comprising abrasive grit in the grit size range 100 to 600. In carrying out said method of said first aspect of the present invention, a cloth woven from polyester yarns may be passed between a set of conventional calender rollers, at a speed in e.g. the range 20 to 75 feet per minute; with said pressure in the range 800 to 1600 pounds per lineal inch, and said temperature in the range 230 to 3000F.
After calendering, the cloth can be finished in a conventional manner, by application of adhesive and abrasive grain on one side, to produce a coated abrasive product.
An example cloth for this application is a dimensionally stable polyester woven fabric having a weight of up to 9 ounces per square yard (most cloth lighter than 3.5 ounces per square yard can be manufactured smooth enough). The weave may be square, twill, or sateen weave, but square weave is preferred. The yarn weight may vary from yarn numbers of 1-1/2 to 3 for staple fibers (cotton count), to 100 to 1100 denier, for continuous multifilament yarns.
Conventional manufacturing methods may be used to produce a finished coated abrasive product from the backing. The
cloth, as treated according to this invention, will show a flattening of the weft yarns of the cloth, but will show no indication of any fusion to the yarns. Excessive heat or heat
and pressure will destroy the desired dimensional stability of the cloth, significantly reduce the adhesion of the maker coat to the backing, and will weaken it in tensile and tear strength. Calendering within the limits of pressure and temperature of this invention, will produce a smooth surface, dimensional stability within the required limits, proper base adhesion, and, surprisingly, no decrease in tear strength.
The elongation load profile in the warp direction of the cloth, after calendering should have the following character:
Load-Pounds
Per Inch
Elongation of Width
Not greater than 6% 50
9% 100
15% 200
The term "elongation load profile" refers to the locus of points defined by a plot, on rectangular coordinates, of the amount of strain in a fabric versus load on the fabric.
Since the calendering does not improve the stability of the cloth, the fabric, prior to calendering must also have equivalent dimensional stability. Such material is disclosed in U.K. Patent No. 1,515,522.
Fine grit may be abrasive grains (e.g.
silicon carbide, aluminium oxide, co-fused alumina zirconia, garnet, and flint), having a grit size in the range 100 to 600 grit size (approximately 170 microns or 6700 microinches to 8 microns or 315 microinches). Suitable cloth for such grit should have a roughness in terms of valleys and peaks in its surface no greater than about 2500 microinches, for the course grits, and 200 microinches for the finest grits.
A woven (greige) fabric of staple polyester fibers, 66 in. wide, weighing 6.3 oz./sq.yd. in a 2x 1 left handed twill construction having a nominal yarn count of 66x44, and with warp yarns of 12/1 and fill yarns of 15/1 having a warp breaking tensile of 206 Ib./in. (ASTM Strip B) with an elongation at breaking tensile of 63.7% and a fill tensile strength of 105 Ibs./in. with an elongation at breaking tensile of 51.9% is heat stretched in a manner such as disclosed in U.K. patent No. 1,515,522. Such heat stretched fabrics are commercially available.
In a two roller padder which is positioned immediately in front of the heatstretching machine, the fabric is prefinished with a composition comprising 11 parts resorcinol, 16.2 parts formalin solution (37 /n formaldehyde), 0.3 parts sodium hydroxide and 238.4 parts water. The fabric is not scoured or boiled off prior to the prefinishing and heat stretching operations.
The width of the fabric after heatstretching is 53.5 in. The yarn count of the heatstretched fabric is 75x37 and the warp yarn are noticeably smaller in diameter in the heatstretched fabric than they are in the original greige fabric. The weft yarns appear to be somewhat heavier in the heatstretched than in the greige fabric.
The fabric weight is approximately 5.9 oz./sq.yd. The web thickness after heatstretching is 17.1 mils.
The elongation load profile of the heatstretched fabric is determined according to the usual techniques on an
Instron Tensile Tester. "Instron" is a registered trade mark. A one inch strip of heatstretched and prefinished polyester fabric is used, gage length 3 inch, chart speed 12 inch/min. and jaw speed of 12 in./min.
The tensile strength of the heatstretched fabric is 279 Ibs./in. width with an elongation of 16.9%, the fill tensile strength is 86 Ibs./in.
width with an elongation of 53%. The elongation load profile of the warp is 3.2 /" at 100 Ibs., 8.8% at 200 Ibs. and 16.9% at breaking tensile.
The fabric is then subjected to a high temperature, high pressure calender to smooth and densify the fabric while maintaining dimensionally stability of the calendered fabric.
The calender employed is a three roller (roller length, 62 inches) gas fired Schreiner calender stack. The top and bottom rollers are mirror finished stainless steel, the center roller is a corn husk roller made of 100% cotton fabric having a hardness of 82 durometer. The top steel roller is heated by gas. The bottom steel roller is heated with steam, the center husk roller is heated by contact transfer from the top and bottom rollers.
The prefinished and dimensionally stabilized polyester fabric is calendered at 230"F., 40 tons pressure (1290 pounds/lineal inch of roller) and at a speed of 30 ft./min.
The warp tensile strength of the prefinished, heatstretched and calendered fabric is 276 Ibs./in. with an elongation at breaking tensile of 19.4%. The elongation profile of the warp is 4.8% to 100 Ibs., 10.4% at 200 Ibs.
and 19.4% at breaking tensile. The thickness of the calendered fabric is 11.9 mils. The surface roughness of heatstretched fabric is about 4000 microinches and after calendering it is reduced to about 1500 microinches in terms of the absolute average difference between the peaks and valleys.
The elongation load profile and the reduction in surface roughness of the heatstretched fabric is very important where the fabric is to be used on a backing member for the fine grits of coated abrasive material. If the surface roughness of the original heatstretched fabric is not reduced significantly, it will be imparted to the coated abrasive surface which will result in an undesirable scratch pattern on the workpiece being ground.
The dimensionally stabilized and calendered fabric is next coated in its back side (twill) with a composition as follows:
Parts by
Component Weight
A 1
B 1
CaCO3 2 parts per each part
solids A and B.
Component A is an aqueous resinous composition (72n e solids concentration) comprising bisphenol A and formaldehyde (alkaline catalyzed) having a formaldehyde to phenol (F/P) ratio of 3.8 to 1. Component
B is a copolymer dispersion, Dur-O-Cryl, obtainable from the C. S. Tanner Co., having a composition in terms of the monomer constituents as follows:
Component % by Weight
acrylonitrile 13
methyl methacrylate 13
butyl acetate 17
acylamide 1
monionic surfactant 3
water 53
Sufficient composition is applied to result in after drying 5.2 Ib./sand paper maker's ream. Drying is accomplished by heating for 0.33 min. at 2000F., 0.33 min. at 225"F. and 0.33 min. at 2000F.
A front size is then applied to the fabric front surface of the following composition:
Parts by
Component Weight (1) a phenol-formaldehyde
resin, F/P 0.94,
NaOH catalyzed until ph=8.1 78% solids in H2O 78% solids in H2O 1 (2) bisphenol A resin
(component A above) 9 (3) CaCO3 particulate filler equal to
solids in
(1) and (2)
Drying is accomplished by heating for 0.33 min. at 225"F., 0.33 min. at 2750 F; and 0.33 min. at 250"F. Sufficient front size composition is applied to result in a dry weight of 4.8 Ibs./SPMR.
A maker's adhesive having the following composition is then applied to the frontsized backing member in accordance with the usual techniques:
Parts by
Component Weight (1) Phenol-formaldehyde
alkaline catalyzed
resol resin F/P
factor 2.08,
pH 8.7 solids 78% in water 7 (2) Phenol-formaldehyde
alkaline catalyzed
resol resin F/P
0.94, pH 8.1, solids
in H2O 78 ó 3 (3) CaCO3 particulate
filler 1.54xtotal solids
(1)+(2)
The maker is applied in an amount equal to 2 Ibs./SPMR.
To the adhesively coated fabric is then applied by conventional elastostatic means 8.3 Ibs./5 SPMR grit 320 high purity aluminium oxide abrasive grain. The abrasive-adhesive coated backing member is then heated for 25 mins. at 170"F., 25 min. at 190"F., and 47 min. at 2250 F. to provide a dry adhesion layer (1.8
IbsJSPMR) to anchor the abrasive grains to the desired orientation.
Afterwards a size coat (3.3 Ibs./SPMR, dry) of the same composition as the maker coat, except for a lower viscosity, is then applied according to the usual techniques.
The wet adhesive layer is then dried-25 mins. at 1250F., 25 min. at 1350F., 18 min. at 1800F., 25 mins. at 1900F., and 15 minutes at 225"F. after which a final cure at 2300F for 8 hours is given. The coated abrasive material is then ready to be manufactured according to the usual techniques, into belts, discs and other desired abrasive products.
In a grit 150, the same backing was used as described above except the prefinish was not applied to the fabric. The maker weight for grit 150 Awl203, is 4 oz. Ibs./SPMR with a grain deposition of 10.6 Ibs./SPMR. The size adhesive of lower viscosity than the maker is applied 3.3 Ibs./SPMR dry.
In carrying out the present invention, a woven polyester fabric is preferably calendered at pressure in the range 20 to 60 tons pressure and temperature in the range 200 to 380"F, to provide a smooth surface, upon which fine grit abrasive may be applied, to produce flexible coated abrasive articles for polishing applications.
WHAT WE CLAIM IS:
1. A method of preparing a cloth suitable for use as a backing in an abrasive product, said method comprising subjecting to both pressure and temperature, a cloth woven from polyester yarns, said pressure being in the range 600 to 2000 pounds per lineal inch of cloth, said temperature being in the range 200 to 3800F.
2. A method as claimed in claim 1, wherein said cloth has a twill weave.
3. A method as claimed in claim 1, wherein said cloth has a sateen weave.
4. A method as claimed in claim 1, wherein said cloth has a square weave.
5. A method as claimed in any one of claims 1 to 4, wherein said polyester yarns comprise staple polyester fibers.
6. A method as claimed in claim 5, wherein said staple polyester fiber yarns have yarn numbers in the range 1.5 to 3.0 (cotton count).
7. A method as claimed in any one of claims 1 to 6, wherein said polyester yarns comprise continuous multifilament polyester yarns.
8. A method as claimed in claim 7, wherein said continuous multifilament polyester yarns have deniers in the range 100 to 1100 denier.
9. A method as claimed in any one of claims 1 to 8, wherein said cloth to be subjected to said pressure and temperature has a prefinish.
10. A method as claimed in any one of claims 1 to 9, wherein said cloth to be subjected to said pressure and temperature has been heat stretched.
11. A method as claimed in any one of claims 1 to 10, wherein said pressure is in the range 800 to 1600 pounds per lineal inch.
12. A method as claimed in any one of claims 1 to 11, wherein said temperature is in the range 210 to 3800 F.
13. A method as claimed in any one of claims 1 to 11, wherein said temperature is in the range 230 te 3000F.
14. A method as claimed in any one of claims 1 to 13, wherein said subjecting to pressure and temperature is carried out while said cloth is moved at a speed in the range 20 to 75 feet per minute.
15. A method as claimed in any one of claims 1 to 14, wherein said subjecting to pressure and temperature is carried out by calender roller means.
16. A method as claimed in any one of claims 1 to 15, wherein said cloth before or after said subjecting to pressure and temperature has a weight up to 9 ounces per square yard.
17; A method as claimed in claim 16, wherein said weight is in the range 3.5 to 9.0 ounces per square yard.
18. A method as claimed in any one of claims 1 to 17, wherein said cloth after said subjecting to pressure and temperature has an elongation load profile (as hereinbefore defined) in the warp direction of not more than 6% at 50 pounds per inch of width, not more than 9% at 100 pounds per inch of
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (49)
1. A method of preparing a cloth suitable for use as a backing in an abrasive product, said method comprising subjecting to both pressure and temperature, a cloth woven from polyester yarns, said pressure being in the range 600 to 2000 pounds per lineal inch of cloth, said temperature being in the range 200 to 3800F.
2. A method as claimed in claim 1, wherein said cloth has a twill weave.
3. A method as claimed in claim 1, wherein said cloth has a sateen weave.
4. A method as claimed in claim 1, wherein said cloth has a square weave.
5. A method as claimed in any one of claims 1 to 4, wherein said polyester yarns comprise staple polyester fibers.
6. A method as claimed in claim 5, wherein said staple polyester fiber yarns have yarn numbers in the range 1.5 to 3.0 (cotton count).
7. A method as claimed in any one of claims 1 to 6, wherein said polyester yarns comprise continuous multifilament polyester yarns.
8. A method as claimed in claim 7, wherein said continuous multifilament polyester yarns have deniers in the range 100 to 1100 denier.
9. A method as claimed in any one of claims 1 to 8, wherein said cloth to be subjected to said pressure and temperature has a prefinish.
10. A method as claimed in any one of claims 1 to 9, wherein said cloth to be subjected to said pressure and temperature has been heat stretched.
11. A method as claimed in any one of claims 1 to 10, wherein said pressure is in the range 800 to 1600 pounds per lineal inch.
12. A method as claimed in any one of claims 1 to 11, wherein said temperature is in the range 210 to 3800 F.
13. A method as claimed in any one of claims 1 to 11, wherein said temperature is in the range 230 te 3000F.
14. A method as claimed in any one of claims 1 to 13, wherein said subjecting to pressure and temperature is carried out while said cloth is moved at a speed in the range 20 to 75 feet per minute.
15. A method as claimed in any one of claims 1 to 14, wherein said subjecting to pressure and temperature is carried out by calender roller means.
16. A method as claimed in any one of claims 1 to 15, wherein said cloth before or after said subjecting to pressure and temperature has a weight up to 9 ounces per square yard.
17; A method as claimed in claim 16, wherein said weight is in the range 3.5 to 9.0 ounces per square yard.
18. A method as claimed in any one of claims 1 to 17, wherein said cloth after said subjecting to pressure and temperature has an elongation load profile (as hereinbefore defined) in the warp direction of not more than 6% at 50 pounds per inch of width, not more than 9% at 100 pounds per inch of
width, and not more than 15% at 200 pounds per inch of width.
19. A method as claimed in any one of claims 1 to 18, wherein at least one side of said cloth after said subjecting to pressure and temperature has a surface roughness of not more than 2500 microinches.
20. A method as claimed in claim 19, wherein said surface roughness is not more than 200 microinches.
21. A method as claimed in claim 1, substantially as described in the Example.
22. A cloth prepared by a method as claimed in any one of claims 1 to 21.
23. A cloth as claimed in claim 22, said cloth being a cloth woven from polyester yarns, said cloth having a weight up to 9 ounces per square yard, an elongation load profile (as hereinbefore defined) in the warp direction of not more than 6% at 50 pounds per inch of width, not more than 9% at 100 pounds per inch of width, and not more than 15% at 200 pounds per inch of width, and at least one side of said cloth having a surface roughness of not more than 2500 microinches.
24. A cloth as claimed in claim 23, wherein said cloth has a twill weave.
25. A cloth as claimed in claim 23, wherein said cloth has a sateen weave.
26. A cloth as claimed in claim 23, wherein said cloth has a square weave.
27. A cloth as claimed in any one of claims 23 to 26, wherein said polyester yarns comprise staple polyester fibers.
28. A cloth as claimed in claim 27, wherein said staple polyester fiber yarn numbers in the range 1.5 to 3.0 (cotton count).
29. A cloth as claimed in any one of claims 23 to 28, wherein said polyester yarns comprise continuous multifilament polyester yarns.
30. A cloth as claimed in claim 29, wherein said continuous multifilament polyester yarns have deniers in the range 100 to 1100 denier.
31. A cloth as claimed in any one of claims 23 to 30, wherein said cloth has a prefinish.
32. A cloth as claimed in any one of claims 23 to 31, wherein said cloth has been heat stretched.
33. A cloth as claimed in any one of claims 23 to 32, wherein said surface roughness is not more than 200 microinches.
34. A cloth as claimed in any one of claims 23 to 33, wherein said cloth has been calendered by calender roller means.
35. A cloth as claimed in claim 23, substantially as described in the Example.
36. An abrasive product, comprising abrasive grit; and a backing that is a cloth as claimed in any one of claims 22 to 35.
37. An abrasive product as claimed in claim 36, which is in the form of an abrasive sheet, belt or disc.
38. An abrasive product as claimed in claim 36 or 37, wherein said abrasive grit has grit size in the range 100 to 600.
39. An abrasive product as claimed in any one of claims 36 to 38, wherein said abrasive grit comprises silicon carbide.
40. An abrasive product as claimed in any one of claims 36 to 39, wherein said abrasive grit comprises aluminium oxide.
41. An abrasive product as claimed in any one of claims 36 to 40, wherein said abrasive grit comprises co-fused alumina zirconia.
42. An abrasive product as claimed in any one of claims 36 to 41, wherein said abrasive grit comprises garnet.
43. An abrasive product as claimed in any one of claims 36 to 42, wherein said abrasive grit comprises flint.
44. An abrasive product as claimed in any one of claims 36 to 43, comprising front size applied to a surface of said sheet.
45. An abrasive product as claimed in claim 44, comprising maker adhesive applied to said front size; and said abrasive grit applied to said maker adhesive.
46. An abasive product as claimed in any one of claims 36 to 43, comprising maker adhesive applied to said roughened surface of said sheet; and said abrasive grit applied to said maker adhesive.
47. An abrasive product as claimed in claim 45 or 46, comprising a size coat applied to said abrasive grit.
48. An abrasive product as claimed in any one of claims 36 to 47, comprising back size applied to said backing.
49. An abrasive product as claimed in claim 36, substantially as described in the
Example.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US78589977A | 1977-04-08 | 1977-04-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1567125A true GB1567125A (en) | 1980-05-08 |
Family
ID=25136967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13371/78A Expired GB1567125A (en) | 1977-04-08 | 1978-04-05 | Cloth suitable for use as a backing in an abrasive product |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS53137493A (en) |
| AU (1) | AU517721B2 (en) |
| BR (1) | BR7802194A (en) |
| CA (1) | CA1084677A (en) |
| CH (1) | CH629696A5 (en) |
| FR (1) | FR2386392A1 (en) |
| GB (1) | GB1567125A (en) |
| IT (1) | IT1108599B (en) |
| SE (1) | SE7803648L (en) |
| ZA (1) | ZA781867B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111918992A (en) * | 2018-03-27 | 2020-11-10 | 哈伯西有限公司 | Abrasive product comprising impregnated woven fabric and abrasive particles |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5831640U (en) * | 1981-08-26 | 1983-03-01 | 株式会社東海理化電機製作所 | Automotive outer mirror tilting device switch |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US590989A (en) * | 1897-10-05 | Snow-plow for wagon-roads | ||
| CA1052587A (en) * | 1974-07-24 | 1979-04-17 | Raymond E. Pemrick | Backing members of improved dimensional stability |
| FR2305278A1 (en) * | 1975-03-25 | 1976-10-22 | Tissmetal Lionel Dupont | Rotary sander pad with abrasive coated substrate - comprising polyester, polyacrylic or polynosic filaments in form of net |
-
1978
- 1978-03-30 CA CA300,025A patent/CA1084677A/en not_active Expired
- 1978-03-31 SE SE7803648A patent/SE7803648L/en unknown
- 1978-03-31 ZA ZA00781867A patent/ZA781867B/en unknown
- 1978-03-31 FR FR7809444A patent/FR2386392A1/en active Granted
- 1978-04-05 AU AU34802/78A patent/AU517721B2/en not_active Expired
- 1978-04-05 GB GB13371/78A patent/GB1567125A/en not_active Expired
- 1978-04-07 IT IT7867777A patent/IT1108599B/en active
- 1978-04-07 BR BR7802194A patent/BR7802194A/en unknown
- 1978-04-07 CH CH378978A patent/CH629696A5/en not_active IP Right Cessation
- 1978-04-07 JP JP4042378A patent/JPS53137493A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111918992A (en) * | 2018-03-27 | 2020-11-10 | 哈伯西有限公司 | Abrasive product comprising impregnated woven fabric and abrasive particles |
| CN111918992B (en) * | 2018-03-27 | 2022-08-16 | 哈伯西有限公司 | Abrasive product comprising impregnated woven fabric and abrasive particles |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1108599B (en) | 1985-12-09 |
| CH629696A5 (en) | 1982-05-14 |
| JPS53137493A (en) | 1978-11-30 |
| FR2386392B1 (en) | 1980-11-14 |
| AU3480278A (en) | 1979-10-11 |
| BR7802194A (en) | 1978-12-19 |
| JPS5614436B2 (en) | 1981-04-03 |
| SE7803648L (en) | 1978-10-09 |
| ZA781867B (en) | 1979-03-28 |
| IT7867777A0 (en) | 1978-04-07 |
| FR2386392A1 (en) | 1978-11-03 |
| AU517721B2 (en) | 1981-08-20 |
| CA1084677A (en) | 1980-09-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |