CN88101108A - Flexible abrasives - Google Patents

Abstract

The method that forms abrasive article includes a surface of metallic membrane being linked regularly the flexible sheet base, the shade of anti-plated material is added on the exposure of metallic membrane, above-mentioned anti-plated material has numerous discrete holes on the whole, plated metal directly adheres on the above-mentioned metallic film, and grinding element also just is embedded in the metal plating.

Description

The present invention is relevant with flexible abrasives, is specially adapted to the course of processing such as grinding, grinding, precision work to stone or other heavy loading material.

The United States Patent (USP) 4256467(invention Ren of on August 17th, 1981 promulgation is Ge Suxi) announced a kind of flexible abrasives, this abrasive article includes and is loaded with the flexible nonconducting net of some nickel coatings, just is embedded in wherein such as the powder emery abrasive substance in nickel coating.

According to above-mentioned United States Patent (USP), the manufacture method of flexible abrasive article at first is but that the flexible nonconducting net materials of a slice is taped against a smooth electrical conductor surface, and suitably cover only to stay and want galvanized those surface portions, net materials becomes fixed relationship with conductive surface like this, nickel is just by the expose portion of mesh plating at smooth surface, contain abrasive substance in the net materials, abrasive substance is with regard to being embedded in the metal level and net just is embedded in the nickel coating like this, net peels off from conductive surface at last, and is cut into desired shape.

Yet this method has many shortcomings, the preparation work of cylinder is that costliness is complicated again before each the plating, the course of processing is that operate on the basis with one batch slowly and all, because the flexible net materials of the concrete size of one deck must be attached on the cylinder, under tight power effect, make net and cylinder be maintained fixed relation.

The more important thing is the product of producing with the Ge Suxi method, structurally not too firm, only be suitable for using under the underloading, such as the mill camera lens, be used in heavier load such as abrasive belt as fruit product, net just need stick in the suitable basic unit, not so so, grind the heat produced and be difficult to provide a kind of adhesion of satisfaction and since damage, the nickel coating of abrasive belt not firm from the inherence split away off on the net and the layering of abrasive belt all can cause a lot of troubles.

We are on September 15th, 1986 in the Canadian pending application NO 518201(applying date) introduced a kind of method, this method has overcome the problem that occurs in the relevant conducting post preparation work, and allows this process operate continuously.In this method, shade directly is added on the conductive mesh, rather than is added on the conducting surface, and when using net, yet abrasive article still sticks in the blocky basic unit in heavy duty is used.

The object of the invention provides a kind of method of producing flexible abrasive article, and this method is compared with Canadian pending application NO 518201 described methods above-mentioned, not only soon but also economize, and is easy to make the operating process automatization during operation.Therefore use this method, abrasive sheet base provided by the invention can be made cushion, disk or band shape, product can carry out grinding and providing at a high speed a clean surface on the separation surface of metal plating, this has just produced a more effective grinding, only need to use still less metal or abrasive substance simultaneously, make this product of manufacturing become more economical effective, more meaningfully but this method direct production is used for the abrasive sheet under the heavy duty and needn't be folded into base material later on, the abrasive article of producing with the inventive method can dispel the heat effectively, and the life-span is also long.

According to the invention provides a kind of method of making abrasive article, this method has in the one side of flexible sheet base and has metallic membrane, the shade of the anti-plated material of numerous discrete wells is added on the exposure of metallic membrane, plated metal directly is plated on the metallic membrane that contains particulate abrasive material by these discrete holes, institute's metallizing just directly sticks on the metallic membrane like this, and abrasive substance is just imbedded in the metal plating, coating preferably adopts electro-plating method, though also can use electrodeless plating, the desired metallic of metallic membrane is a copper, the desired metallic of coating is a nickel, also can use other combination certainly.

Yet for reducing the heat that abrasive article produced in the use, just increased its efficient and life-span, the wearing piece that this method is produced itself is useful thereupon.In most preferred embodiment of the present invention, after the exposure of Metal plating at metallic membrane, shade peels from the sheet base, and the metallic membrane between the discrete metal plating is corroded and exposes the sheet base.

Shade also can be added on the metallic membrane; by being coated with the last layer photopolymer; yet exposure again; opening under the uviolizing of foraminous barrier by one; photopolymer just decomposes; so coating just is rinsed; the most handy highly basic is handled such as sodium hydroxide; photopolymer can be the film of doing or be called dry film; for example E.I.Du Pont Company's supply is with the photopolymer of Li Sidun name; or the photopolymer protective layer of the stratified photopolymer protective membrane of Dai Naxi (Dynachem) company supply or the supply of Hai Gelisi company, also can be by Kodak, GAF; Dai Naxi; the liquid photopolymer protective layer of Du Pont or Fuji Photo Film Co., Ltd.'s supply.Photopolymer wishes to expose under ultraviolet ray, and it also is suitable still decomposing photopolymer and other flushable form radiation.

The content that the present invention gos deep into a step provides a kind of method of making flexible abrasive article, this method has in the conductive metallic surface of flexible basic unit and is coated with the last layer photopolymer, then, have under the ultraviolet ray of discrete wells exposure on by a barrier and decompose photopolymer, rinse out coating then, so just can serve as the shade that some discrete wells are arranged, directly plated metal is plated to the metallic surface of containing particulate abrasive material again by above-mentioned discrete wells, grinding element just is embedded in the metal plating so metal directly sticks to above-mentioned metallic surface, as in the past, this method is wished after plated metal, shade is peeled with the exposing metal face from substrate, yet the metal covering that erodes again between the plated metal exposes basic unit.

In addition; shade also can be used the silk weaving barrier; in the case; shade is to be made by the ultraviolet ink of retaining; also can be making of retaining heat, and these anti-galvanized protective membranes or etch-proof resist all can be by company of the special The Mead Corp (Mcdermid) of mark, Dai Naxi company or the supplies of M$T chemical company such as retaining infrared rays ink.

When wanting that abrasive article is made pad and during disk, flexible basic unit is the form of fabric preferably, but also can be the glass-epoxy lamination form that is used for printed circuit board (PCB), these materials all can be supplied by western room and G, E company.The sheet base can be the resol form also, such as phenol formaldehyde resin, can certainly be the polyester glass fiber lamination that is used for printed circuit board (PCB), and the suitable thickness of sheet base is about 8 to 12 mils (0.001).

In order to make the flexible abrasive article that is applicable to abrasive belt, also available Copper Foil and with the no resin fibre of flexible printed circuit trade mark kapton (E.I.Du Pont Company's supply) by name as basic unit.Yet in the embodiment of particular requirement of the present invention, the sheet base is to make with plating the blocky cloth of metallic film, and the fabric of particularly suitable is by polymeric amide (nylon) line or the poly-of trade mark Kai Fula (Kelilan) by name one (phenylene) terephthalamide line to be made into.

Metallic film is attached to the sheet primary surface regularly, and metallic film can be used pellicular cascade, also can use electrodeless coating, and steam is smoked plating, sputter or electrochemistry plating, can also be with electroplating.Metal can be any conducting metal such as copper, aluminium, nickel, steel, rhodium or gold, but optimal metal or copper, only thickness from 3/20 to 14 mil of metallic film, optimal thickness is 0.7 to 2.8 mil.

Abrasive substance is exactly the abrasive sand of plain particles shape, the boron nitride of powder emery or side grain for example, the best is a carbonado, can be anyly can carry out electroplated metal or with the metal of electrodeless plating with the appropriate electrical plating bath as for metal, the most handy nickel or copper, nickel is even more ideal.

In most preferred embodiment, with the sheet base of metallic membrane continuously by electroplate liquid as a negative electrode, and anode is wanted electroplated metal exactly, and with top method, metal is plated in above-mentioned discrete wells place continuously, and in electroplating process, the abrasive sand dispenser is a negative electrode in order to guarantee the sheet base in electric liquid liquid in electroplate liquid, so will link the sheet base negative pole of power supply, at this moment the sheet base preferably contacts with smooth nonconducting plastic cover, and optimum electroplate liquid is a nickel sulfamic acid.And shade itself is extremely thin sheet base, and its thickness is about 3～4 mils, and it forms mesh grille with numerous perforates, and opening diameter for example is 1/6.

The sheet base is taken out from electroplate liquid, peel and in alkaline solution, corrode.Extremely important characteristics of the present invention are, have opening on husband's pulling-on piece base of powder emery nickel coating and be coated with the last layer resin, such as dual urethane, it is that UR 2139 X-1 and UR 2139X-14 are provided by Yi Lan POLO (Elecbro) company that trade name on the market is arranged, through peel off and rotten feedback after, open on husband's pulling-on piece base and include numerous nickel shots, these nickel shots are carried by the copper layer and stick on the Kai Fula fabric, in use, the nickel anchorage firmly fixes on the fabric, after coating urethane, the trend that nickel shot comes off reduces greatly, this urethane just is filled in the space between the nickel shot, therefore when fabric moves past working face, has reduced shearing force.

Also further find to use a kind of resin of filling, just in resin, be filled with solid particulate matter, especially silicon carbide powder, horizontal the moving that can further stop nickel to draw, thus further reduce the possibility that they come off.

Further characteristics of the present invention are that nickel shot determines that to give the shape of deciding characteristic this just not weakening under the abrasive characteristic prerequisite, can obtain the effect that reduces the diamond usage quantity to greatest extent.By the shape of careful design nickel shot, also can help to remove the material that had ground.Above-mentioned photolithography and silk screen method all have extraordinary effect to making the fast nickel shot of a setting.

With reference to accompanying drawing,, now invention is narrated in more detail in conjunction with example.

Fig. 1 shows the sectional view of Kai Fula fabric on a segment length of the nickel coating that is coated with the band powder emery.

Fig. 2 shows that lamination basic unit contains the surperficial shade of a band crescent hole regular pattern.

Fig. 3 shows the details in a group hole.

Example 1

Copper clad and two rooms; the thickness that the glass-epoxy lamination that is used for printed circuit board (PCB) is sold by GE company has only 8 to 12 mils; and the copper surface is mechanically cleaned with brush; under about 222 temperature, be laminated to the copper surface by Dai Naxi company supply light polymeric film; use the autoscan exposure apparatus then; expose with ultraviolet ray by hole on the barrier; anti-light protection layer with photopolymer removes; and the photopolymer that has exposed washed with potassium hydroxide; so the product with the shade photoetching is handled in the commercial electroplate liquid nickel sulfamic acid of the trade mark SNR 42 by name that Hansen Corp. provides, service temperature is 14 ℃; 9 volts of volts DSs; electric current be 170 peaces doubly.

After this flexible abrasives leaves electroplate liquid, though do not need further to handle just can to cut and use, also handy Chemalex stripper carries out lift-off processing to dried light film, and then by the alkaline copper etchant solution that Hunt chemical company the provides corrosion of spraying.

Abrasive article has the prominent grain of a clear translucent appearance attractive in appearance with the powder emery grinding element, in fact, between prominent grain, do not include the metal of diamond, this is with opposite according to the product of Canadian pending application NO518210 method manufacturing, it is very irregular that the product of Canada's pending application demonstrates appearance, often has metal and powder emery particle to exist between the prominent grain.The human consumer appeals to clean the abrasive article of appearance, and especially in the supermarket, this just provides more effective abrasive article, and in addition, the product price made from the inventive method is cheap, and the waste of metal and abrasive substance is also few.

The copper layer have many advantages, it provides the smooth surface of coating, this smooth surface is important preventing that shade from coming off and making the powder emery uniform distribution.Copper zone of transition between shade and prominent grain is removed, and the copper part that stays below prominent grain just becomes the part of prominent grain, relies on this copper part, and prominent grain is just linked in the basic unit.In order to make prominent grain that certain altitude be arranged, because metal part below being positioned at prominent, electroplating time just can shorten like this.Metal-plated should exceed basic unit has enough amounts to avoid unsuitable wearing and tearing to allow the removing material that had enough ground.

Example 2

One heavily is 10 ounces, be of a size of 24 * 24 Kai Fula fabrics and carry out electrodeless copper facing with the electrodeless copper electroplating method of standard, this method is known for everyone with trade name Ethone System CU 701, generally be used to produce printed circuit board (PCB), its copper facing thickness is respectively 80 microns and 120 microns at two faces.

The copper facing fabric is subjected to shade, and use-case 1 described method is on nickel and the powder emery plating, and the copper-clad coating can be handled with being similar to the glass-epoxy laminating method.

After from electroplate liquid, taking out, through peeling off and corrode, coat urethane resin and make them fill up the space of nickel between drawing opening husband's pulling-on piece base, abrade or isolate in order to prevent abrasive belt, coat the Resins, epoxy of gel at its reverse side after, the sheet base just cuts into band shape.

Example 3

The clean fabric of the F-2160/175 Kai Fula that a slice Batan company produces (line footpath 29～1500 Denier), soaked into and be numbered BO 800 LOMOD polyester type elastomer resins, resin is liquid and adds with roller, one deck Copper Foil of weighing 10 English rain is added on the sheet base that soaks into then, and to be placed on pressure be 250 pounds/inch ²Made up in lasting 1 hour at room temperature condition under the pressing machine.

After the sheet base takes out from pressing machine, the Copper Foil exposure is improved its sticking power with the mechanical system polishing, having the anti-plating of many porous shade is added on the Copper Foil with aforesaid way, and lamination is placed on electroplate liquid, nickel just is plated on the Copper Foil by the hole on the shade, in electroplating process, simultaneously powder emery particle dispenser in plating tank.

Shade peels from Copper Foil, middle copper is corroded and only stays the powder emery nickel layer that sticks on a small amount of Copper Foil, and the space between the nickel coating has been full of the urethane resin of deflection, such as the UR 2139X-1 and the UR 2139X-1A of Elecbro company, such abrasive product presents continuous surface will grinding a side.As mentioned above, use resin coating that one significant advantage is arranged, in use promptly, the possibility that coating comes off from substrate subtracts minimumly, and the resin of other deflection also can use.

LOMOD ^TMIn fact resin has strengthened the characteristic of fabric, and it can also be in the industry of heavy lift be used, under to damage abrasive belt flexible down, prevent fabric because wearing and tearing and scratch are gone bad, the physics that this resin also has, machinery, think, electric, fire performance.

Also having the thing of a no less important is LOMOD ^TMHave enough intensity and make copper foil lamination to fabric, after peeling off and corroding, in use, residual copper partly also has firm confining force.

The advantage of this technology be it unlike splash copper, the Copper Foil of lamination has smooth surface, the homogeneity of grinding element can accurately be controlled, simultaneously the possibility of the above-mentioned shade part of electrolytic coating Gonna breakthrough subtracts minimumly.

LOMOD ^TMThe physical data of resin is as follows:

LOMOD LOMOD

Characteristic BO800 BO852

Proportion 1.23 1.30

Modulus of flexibility 85,000 95000

Tensile strength psi 3,350 3475

Stretch percentage elongation % 250 120

Insulation strength 415 405

With the band of LOMOD resin impregnation sheet based method manufacturing the abrasive product of disk shape and other form all had intensity of anomaly and abrasive characteristic.

Example 4

A slice heavily is that the Kai Fula fabric (trade mark of E.I.Du Pont Company is given for poly-yarn to one (phenylene) terephthalamide) of 10 ounce sizes 24 * 24 is used LOMOD ^TMResin (can obtain from GE company) is under heating and pressurized conditions, and it is 1 ounce/Foot that fabric is adhered to surface density ²The copper layer on, the surface of copper layer is cleared up and polishing with the abrasive brush on the rolling jack.

The lamination sheet of one dried mould after by this cleaning, the lamination sheet of being made (30 type) by Xi Keer/Dai Xina company adds last layer Riston(E.I.Du Pont Company trade mark) anti-optical thin film (another kind of alternative film is produced by Dai Xina company).

The lamination sheet that adds anti-optical thin film is placed on-exposure apparatus that has the crescent moon sectional hole patterns barrier that requires of Scauner II type; barrier can be produced with photoetching; behind ultraviolet exposure, image is is just developed and printed, and the polyester protective film that is added to like this on the lamination sheet just is rinsed.

In this method, spilt powder emery in the electroplate liquid, plating is meniscate with above-mentioned formation, and powder emery imbeds under the similarity method of nickel coating and carries out, other grinding particulate material also can use such as square boron nitride.

After electroplating, the copper of shade and exposure is removed with peeling off with etchant solution of alkalescence.

This product is coated urethane protection resin with roller subsequently, and the trade name of being produced by elecbro company is that UR 2139x-1 and UR 2139x-1A fill the gap between the nickel coating.

The sheet base cuts into strip and a plurality of strip lumps together and forms bandedly, prepares to be used for grinding.

Form shade without light-locking material, and be applied on the shade with silk weaving screen method, shade is to make with UR 2311B silk weaving screen material, and this material is applied in the effect of playing ultraviolet processing treatment in the silk weaving screen method.

With reference to Fig. 1, one section Kai Fula fabric 1 is used LOMOD ^TMResin impregnation also adheres on the copper barrier film 2, and these copper barrier films are Copper Foil in above-mentioned method, and be above-mentioned peel off and corrode after original Copper Foil stay that part of.

Nickel shot 3 is that nickel is electroplated on copper barrier film 2, and has powder emery particle 4 to be embedded in wherein.

Space between nickel shot 3, with urethane resin 5 fillings, resin 5 has reduced the transverse movement of nickel shot 4, and in grinding, coming off of nickel shot is had deep effect in aforesaid method.

To coagulate one of widely used factor of this kind abrasive product be under the severe environment of industrial shredder in harm in the past, is difficult to nickel shot is retained in the basic unit.

The sheet base cut into inch strips and the reverse side that is incorporated in them by knot with Bostk 7070 ^TMViscose glue is bonding and form the broadband the arrowband.In order to reduce wear, should grind off slightly in the back of the band of position, arrowband, to avoid can causing jolting of awaring when the arrowband forwards this position to, it is laterally mobile to reduce that its edge also should be processed into wave molding.

Lamination 11 shown in Figure 2 has a Kai Fula fabric to arrive copper layer 12 with resin bond, cover a surperficial shade that has the crescent hole and make on it with light-locking material, plating is undertaken by these crescent moon holes, lamination sheet shown in Figure 2 is just put into plating tank subsequently, by these holes 14, the nickel that has powder emery just plates, and this method makes the position that is in the hole produce the prominent grain of meniscate nickel, and powder emery just is embedded in the nickel.

Take out in plating tank at product; the copper of shade and exposure is peeled off from the Kai Fula fabric; stay one deck and firmly be connected in the regular pattern that contains the prominent grain of crescent on the Kai Fula textile substrate; each prominent grain has the nickel coating of band powder emery to constitute, and prominent copper that also has a crescent partly sticks on the fabric below it.

Fig. 3 a is the expression shape of portalling in detail, and this crescent shape is to have the overlapped circle institute of difference to be limited slightly by radius, and Fig. 3 b represents that these holes are as symmetrical arrangement how.

The sheet base of making cuts slivering subsequently, these recomposition bands, and meniscate nickel shot makes abrasive belt be one-way, and promptly the edge that crescent is outstanding must face toward direction of motion, in general, the shortcoming that this is outstanding at last.

Do not damaging under the abrasive characteristic situation, using the prominent grain of crescent shape can save a considerable amount of powder emerys,, therefore removing the material that had ground and also improve to some extent because the grain surface area ratio round shaped grain surface-area of should dashing forward is little.

Can there be other shape in the hole, and for example favose hole just can make belt that bigger rigidity is arranged.

The interval of prominent grain and size can be closed according to the field boundary that will use and be changed, and better coordinate the characteristic of abrasive product, and compared with former product, the product that the inventive method is produced is to grinding the spy

Claims (55)

1, the method for formation grinding element includes a surface of metallic membrane being linked regularly the flexible sheet base, the shade that anti-plated material is made is added to the surface that metallic film exposes, above-mentioned anti-plated material has numerous discrete holes, want plated metal to be plated on the metallic membrane and make plated metal contain particulate abrasive material by these discrete holes, plated metal directly adheres on the above-mentioned metallic film like this, and grinding element is embedded in the metal plating.

2, method according to claim 1, wherein after Metal plating, shade peels with the exposing metal film from the sheet base, and the metallic film between the discrete electrodeposition of metals is corroded, to expose the sheet base.

3, method according to claim 2, wherein the space between the metal plating at least in part filling resin to reduce laterally moving of coating.

4, method according to claim 3, resin wherein is a urethane resin.

5, method according to claim 2, wherein shade is added on the metallic membrane and is coated with one deck photopolymer on metallic membrane, this photopolymer is exposed by the light with barrier of discrete wells decomposes photopolymer, and above-mentioned coating is washed to remove the photopolymer that is decomposed and expose and is positioned at following metallic membrane.

6, method according to claim 5, photopolymer wherein are the photopolymers of the film like done.

7, method according to claim 5, photopolymer wherein are the photopolymers of liquid film shape.

8, method according to claim 5, photopolymer wherein is subjected to ultraviolet irradiation.

9, method according to claim 1, wherein shade is to rely on the silk weaving barrier to add by a net.

10, method according to claim 9, wherein shade is to be made by the ink of retaining ultraviolet ray and retaining heat.

11, method according to claim 1, sheet base wherein is to be made by the glass-epoxy lamination.

12, method according to claim 1, sheet base wherein is to be made by resol.

13, method according to claim 1, sheet base wherein are that the glass fiber reinforced polyester lamination is made.

14, method according to claim 12, the thickness of sheet base wherein is 8～12 mils

15, method according to claim 2, metallic film wherein is a copper film.

16, method according to claim 1, wherein the sheet base is to be made by the copper clad of no fibre resin.

17, method according to claim 1, wherein the metallic film degree from 3/20 mil to 14 mils.

18, method according to claim 17, wherein thickness of metal film from 7/10 mil to 2.8 mils.

19, method according to claim 1, wherein metallic film is to be stacked on the sheet base.

20, method according to claim 1, wherein metallic film is to be plated on the substrate with electrodeless plating, the smoked plating of steam, sputter or electrochemistry plating.

21, method according to claim 1, sheet base wherein are flexible fabrics.

22, method according to claim 1, fabric wherein are to be made into by nylon yarn (polymeric amide).

23, method according to claim 1, fabric wherein is made into one (phenylene) terephthalamide yarn by poly-.

24, method according to claim 1, wherein the sheet base passes through electroplate liquid continuously, metallic membrane forms negative electrode, in electroplate liquid, want electroplated metal to form the sun level, metal is plated in the discrete hole continuously like this, and the grinding element of dispenser in electric liquid liquid just is embedded in the plated metal in above-mentioned plating.

25, method according to claim 1, wherein plated metal is a nickel.

26, method according to claim 1, wherein abrasive substance is a powder emery.

27, method according to claim 1, wherein shade defines numerous effigurate holes, and metal plating just forms the prominent grain of tangible metal like this.

28, method according to claim 27, the hole on the wherein above-mentioned shade forms a well-regulated pattern.

29, method according to claim 27, wherein above-mentioned hole is a crescent.

30, method according to claim 1, wherein above-mentioned metallic film is a Copper Foil, and above-mentioned base is nylon fiber (tynex) fabric, and resin adheres to above-mentioned Copper Foil, and above-mentioned metal is a nickel, and above-mentioned grinding particulate material is a powder emery.

31, method according to claim 1, wherein the sheet base is coated with one deck polyester elastic resin.

32, method according to claim 31, wherein metallic film adheres on the fabric that contains copolyester resin having under pressure.

33, abrasive article has a flexible sheet base, this sheet base has the surface that numerous discrete prominent grains of metal are linked the sheet base regularly, each prominent grain has a bottom first thin metal layer to link on the sheet base regularly and the electrolytic coating of top second metal, and abrasive substance is imbedded wherein.

34, its first metal of the abrasive article of method according to claim 33 is different with second metal.

35, abrasive article according to claim 34 wherein first metal be copper, second metal is a nickel.

36, abrasive article according to claim 35 wherein abrasive substance be powder emery.

37, abrasive article according to claim 33 wherein the sheet base form by the glass-epoxy lamination.

38, abrasive article according to claim 33 wherein the sheet base be that the polyester glass fiber lamination is formed.

39, abrasive article according to claim 33 wherein the sheet base form by polyamide fabric.

40, flexible abrasive product has a flexible basic unit, and this basic unit has numerous particulate abrasive material to stick to prominent grain above it, and above-mentioned prominent grain is with a kind of patterned arrangement and certain shape is arranged.

41, be meniscate according to the wherein prominent grain of the described flexible abrasive product of claim 40.

42, be to arrange according to the wherein prominent grain of the described abrasive article of claim 41 with a well-regulated pattern.

43, including plated metal according to the wherein prominent grain of the described flexible abrasive product of claim 41 adheres in the basic unit with resin in the part that copper is arranged.

44, according to the described flexible abrasive product of claim 41 wherein basic unit be a polyamide fabric.

45, scribble one deck copolyester resin having according to the wherein said fabric of the described flexible abrasive product of claim 44.

46, be to be made into according to the wherein said fabric of the described flexible abrasive product of claim 45 by polyamide yarn.

47, be poly-according to the wherein said polymeric amide of the described flexible abrasive product of claim 46 to one (phenylene) terephthalamide.

48, be to use above-mentioned resin impregnation according to the wherein said fabric of the described flexible abrasive product of claim 46.

49, adhere on the above-mentioned fabric with conjugated polyester resin according to the wherein said metal part of the described flexible abrasive product of claim 45.

50, abrasive product has numerous prominent grains of discrete metal that contain particulate abrasive material, and this prominent grain is linked in the flexible basic unit regularly, and the compaction material institute filling of deflection is used in the space between the prominent grain at least in part, in use can reduce the shearing force of prominent grain.

51, according to the described flexible abrasive product of claim 50 wherein compaction material be urethane resin.

52, according to claim 3 or 4 described methods, resin wherein is filled with the particulate solid packing material.

53, according to claim 3 or 4 described methods, resin wherein is filled with silicon carbide powder.

54, according to the described abrasive product of claim 51, resin wherein is filled with the particulate solid packing material.

55, according to the described abrasive product of claim 51, resin wherein is filled with silicon carbide powder.

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