CN101681066A - Rubbing cloth - Google Patents
Rubbing cloth Download PDFInfo
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- CN101681066A CN101681066A CN200880018656A CN200880018656A CN101681066A CN 101681066 A CN101681066 A CN 101681066A CN 200880018656 A CN200880018656 A CN 200880018656A CN 200880018656 A CN200880018656 A CN 200880018656A CN 101681066 A CN101681066 A CN 101681066A
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- Prior art keywords
- friction
- friction cloth
- organizine
- fiber
- braid
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
- G02F1/133784—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by rubbing
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/56—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads elastic
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
Abstract
Provided is a rubbing cloth, which is suppressed in the generation of contaminants such as peeled fibers at a rubbing treatment time, which has fine and homogeneous orientation performances for achieving a high resolution of a liquid crystal display device and which is homogeneously controlled in its pushing pressure while contacting an orientation film, thereby to have an excellent orientation regulating force. The rubbing cloth has a woven-knitted fabric and an elastic element laminated and integrated.
Description
Technical field
The present invention relates to a kind of friction cloth.Particularly, the friction cloth that the present invention relates to is orientated excellent in forming the friction process of liquid crystal display with alignment films of high meticulous liquid crystal display, the Soft flocks (peeled fibers) that become pollution source in addition when friction treatment are difficult to form, and can control desirable repulsion performance when friction treatment.
Background technology
In recent years, the liquid crystal indicator performance is thin and the little advantage of area is set, and is being widely used as replacing the display device of existing CRT monitors such as game machine, TV, monitor, duplicating machine, camera.The following formation of the liquid crystal display cells that uses in above-mentioned liquid crystal indicator: the filter substrate (the CF substrate made in following brief note) that will form the TFT substrate of the driving element of being made up of thin film transistor (TFT) (TFT) and form color filter is enclosed liquid crystal over against configuration with vacating slight gap in their gap.Then, cover the surface of ITO electrode, all contact with the liquid crystal of being enclosed in the surface configuration alignment films of above-mentioned TFT substrate, CF substrate.
According to purpose or structure from SiO
2, suitably select in polyimide, polyvinyl alcohol resin or the nylon-epoxy-raw materials such as organic titanium class material and form above-mentioned alignment films, implementation orientation is handled in order to arrange liquid crystal molecule.In above-mentioned orientation process aspect the even orientation that realizes liquid crystal layer is important operation.
As method for orientation treatment, the main rubbing manipulation that adopts with friction cloth friction orientation film surface.Usually the cloth that will rub adheres to the outer peripheral face of aluminium roller or stainless steel rider, make this roller rotation, and meanwhile the friction cloth of outer peripheral face is contacted with alignment layer surface, thus with friction cloth friction orientation film surface.As described above alignment layer surface is implemented friction treatment, alignment films has the orientation anisotropy on by the direction of friction cloth friction, and liquid crystal molecule is arranged along the direction of orientation of this alignment films, obtains uniform display characteristic.
Friction cloth as being used for above-mentioned rubbing manipulation uses the fibrous raw material that is formed by natural fiber, semisynthetic fibre or synthon all the time.
A kind of technology (referring to patent documentation 1) that relates to the friction material that is formed by synthon is for example disclosed.In this technology, use polyester and polyamide to form fabric as synthon, the orientation that has obtained liquid crystal by friction treatment becomes uniform friction material really.But, only the friction material that is made of fabric is because textile self is thin, so the extruding force of required friction cloth is controlled to be necessarily when being difficult to friction treatment, in addition, technology for the disclosure, be used to give the technological thought of fine orientation in shortage aspect the formation of friction cloth, the result considers from the viewpoint that the height of realizing liquid crystal indicator becomes more meticulous, is the inadequate raw material of frictional behaviour.
In addition, as the raw materials of friction cloth, comprise the fibrous raw material (fine hair fleece) that the fine hair that obtained by fiber nappings such as making velvet forms as at most.Filamentary thickness and filamentary filling density (root/cm that friction cloth uses in the fine hair by change with the fine hair fleece
2) regulate cashmere density, in addition, regulate the napping length of fiber according to the cutting position that begins from base cloth.In addition, the long fibre (filament) that the known use of fibrous raw material of use is formed by cellulosic fibres such as rayon or Triafol Ts in the fine hair part, the staple fibre (referring to patent documentation 2) that uses cotton wool and so on.
As the technology related with this fine hair fleece, a kind of technology is for example disclosed, described technology relates to a kind of friction cloth (referring to patent documentation 3) that is formed by the fine hair fleece that uses modified cross-section fibre.There is following advantage in this technology: effectively utilize filamentary sharp keen fiber side, can carry out fine and close orientation process, in addition, because be the structure that forms by fleece, so can be when being adjusted in friction treatment the depth of cup of fleece, the dipole-dipole force during the control orientation etc.; But then, ultimate fibre after the napping easily produces Soft flocks when friction treatment, easily pollute liquid crystal orientation film, and because fleece self, different gradually in the length of fleece surface nappy, promptly, must exist the length of napping irregular,, and be difficult to avoid this friction irregular so it is irregular to produce friction when friction treatment.
In addition, disclose a kind of technology, described technology relates to a kind ofly will cushion (cushion) material and friction cloth (referring to patent documentation 4) of obtaining integrated with the fleece that is formed by superfine fibre.Though in this technology, can expect finer orientationization from superfine fibre, but except that with the same Soft flocks of above-mentioned patent documentation 2 with by the problem such as the irregular orientation that causes of napping length is irregular, also there is following problem: because of the napping softness that forms by superfine fibre, absorb stress, so offset by this superfine fibre napping by the repulsion characteristic that the padded coaming that is provided with produces, orientation when not only having friction treatment is regulated the tendency of power difference, and when superfine fibre contacts with alignment films, because fiber self softness, so all superfine fibre may not be arranged by the direction that should be orientated, the some superfine ultimate fibre that the result does not arrange in direction of orientation hinders the homogeneous orientationization of alignment films, easily produces the uneven and liquid crystal display defective of friction.
Patent documentation 1: Japanese kokai publication hei 1-288827 communique (claims, embodiment 1)
Patent documentation 2: TOHKEMY 2003-156746 communique (claims, embodiment)
Patent documentation 3: Japanese kokai publication sho 61-46932 communique (claims, accompanying drawing 1)
Patent documentation 4: TOHKEMY 2005-91899 communique (claims, accompanying drawing 1)
Summary of the invention
Problem of the present invention is to provide a kind of friction cloth, described friction cloth can be eliminated above-mentioned prior art problems, the generation of pollutant such as Soft flocks when being suppressed at friction treatment, in addition, orientation characteristic with fine and homogeneous of the high resolving powerization that is used to realize liquid crystal indicator, and the squeeze pressure of friction cloth in control and the alignment films contact process is regulated power thereby have excellent orientation equably.
The present invention adopts following formation in order to solve above-mentioned problem.
(1) a kind of friction cloth closes braid and elastomer layer integrated and forms.
As (1) described friction cloth, it is characterized in that (2) braid is a satin fabric.
As (1) or (2) described friction cloth, it is characterized in that (3) quantity that the end of the fiber of formation braid is present in textile surface is that every 1cm square is below 30.
(4) as each described friction cloth in (1)～(3), it is characterized in that, the ultimate fibre radical that forms the organizine on satin fabric top layer or tram be 2000/more than the cm.
As each described friction cloth in (1)～(4), it is characterized in that (5) organizine of satin fabric and intersecting of tram are the repetition more than 5.
As each described friction cloth in (1)～(5), it is characterized in that (6) forming the organizine on satin fabric top layer or the ultimate fibre fiber number of tram is below 2.0 dtexs.
As each described friction cloth in (1)～(6), it is characterized in that (7) organizine or the tram that form the satin fabric top layer are formed by polyester and/or polyamide.
As each described friction cloth in (1)～(7), it is characterized in that (8) organizine or the tram that form the satin fabric top layer are formed by uncrimped fibers.
(9) as each described friction cloth in (1)～(8), it is characterized in that, use 10% o'clock stress (P1) of compression and the elastic body of ratio R (R=P2/P1) in 0.90≤R≤2.00 scopes that compresses 50% o'clock stress (P2) on the thickness direction of friction cloth.
Friction cloth of the present invention is compared with the existing friction cloth that is only formed by fabric, owing to have elastic body, thus required friction cloth extrusion stress can be adjusted in friction treatment the time, excellence that the orientation voltinism can (be orientated adjusting power).Particularly when satin fabric was used as braid, the direction of orientation of fiber and alignment films was arranged in parallel, the orientation characteristic excellence.The radical of the fiber of arranging in the direction of orientation of this alignment films can suitably be selected according to the degree of orientation of target orientation film, and design friction cloth easily is so be fit to employing.
On the other hand, if compare,, need not to worry the pollution of alignment films so generation Soft flocks when friction cloth then of the present invention is suppressed at friction treatment because of no napping front end perhaps do not produce Soft flocks with the existing friction cloth that forms by the fine hair fleece.In addition, owing to also do not have the distinctive napping length of fleece irregular, suppress to produce the friction irregular excellent effect relevant with the display defect of liquid crystal so have.And then, friction cloth of the present invention with satin fabric when the braid because the fiber that uses in the fabric is in bond, thus the angle friction fiber that can as fleece, begin to depart from from direction of orientation not with napping, the orientation characteristic excellence.In addition, because fleece need use the twisted filament of twisting usually, so orientation adjusting power easily becomes insufficient, but in friction cloth of the present invention, the fiber that can be used in braid is a uncrimped fibers, can realize orientationization uniformly thus.
Description of drawings
[Fig. 1] uses the friction cloth of embodiment of the present invention for explanation and the alignment films on the substrate carried out the key diagram of the operation of friction treatment.
[Fig. 2] for as the basis that is configured for the fabric 10 of the embodiment of the invention 10 and 19, be used to obtain have the filamentary cross-sectional view of the core sheath composition fiber (molten remove preceding) of four blade profile odd-shaped cross section silks of sharp keen projection.
The mensuration curve of the compressibility-stress of the elastic property of the elastic body 1 that [Fig. 3] uses in the embodiment of the invention for expression.
The mensuration curve of the compressibility-stress of the elastic property of the elastic body 2 that [Fig. 4] uses in the embodiment of the invention for expression.
Symbol description
1: friction roller
2: elastic body
3: braid
4: alignment films
5: substrate
6: sheath composition (PEG copolymerization PET)
7: core composition (PET)
Embodiment
Friction cloth of the present invention is combined in elastomer layer on the braid and forms.The at present widely used friction cloth that is formed by pile fabric exists the characteristic of optimized surface independently and the problem of the compression property of integral body.That is, if for the more even and fiber that will constitute the pile fabric pile of friction treatment is attenuated, the compression property of the cloth integral body that then rubs also changes, and only can obtain lacking the friction cloth of resiliency.Friction cloth of the present invention by select respectively, corresponding braid and elastic body, can be with the character of surface of friction cloth and resiliency optimization independently.
Fabric do not limit braid in the present invention is special, if then can use plain cloth, satin fabric, twills etc.; If knitted fabric then can use WARP-KNITTING, cylinder braid, weft-knitted fabric etc., wherein, preferred especially satin fabric.The satin weave knitted fabric exposes at the surperficial organizine of fabric or in the tram any one morely, direction by making friction treatment is identical with the orientation of the silk that exposes morely, can improve the fiber of friction cloth and the homogeneity of substrate contacts degree, can make friction effect more even.
So-called herein satin fabric is meant to exist to have only organizine or the supernatant part of tram, and this part only demonstrates the fabric that is similar to organizine or tram outward appearance.
In this satin fabric, organizine is kept off with intersect (interlacing point) of tram, for once intersects and arrangement discretely in fabric tissue (the repetitive structure unit that the organizine of fabric and tram form).The satin fabric that uses among the present invention preferably this interlacing point is that the intersection of organizine or tram is the repetition more than 5, the more preferably repetition more than 8, the preferred especially repetition more than 10.The radical that repeats is many more, only organizine or only the ratio of exposing of tram increase more, when with laminated integrated and friction cloth that form of the present invention satin fabric one side pressure being carried out friction treatment on alignment films, the performance that alignment films is orientated is more excellent.Need to prove, when this interlacing point (intersection of organizine or tram) is 5 repetition, be called " 5 satin weaves "; When being 8 repetition, be called " 8 satin weaves " etc., with kind (form) synonym of satin fabric, as the form of satin fabric more preferably, preferred 5 satin weaves are above, further above, preferred especially 10 more than the satin weave of preferred 8 satin weaves.
As mentioned above, friction cloth of the present invention closes braid and elastomer layer integrated and forms, and when friction treatment friction treatment is carried out in braid one side pressure on alignment films.When braid is satin fabric, if this satin fabric face on the alignment films of being pressed in has more fiber to expose on the direction parallel with frictional direction and arranges when friction treatment, then this more fiber expose the silk can be organizine, also can be tram, but preferred in the manufacturing of satin fabric the more warp satin that exposes of the organizine of easier design.This more fiber that exposes and frictional direction are arranged in parallel, and the friction orientation film is finished orientationization when friction treatment, thereby realize as the generation of the inhibition Soft flocks of the object of the invention, the fine and fine and close orientation anisotropisation of alignment films.
In this satin fabric, the ultimate fibre radical that is pressed in the organizine that exposes than multifilament of face on the alignment films or tram is many more, can realize more fine and close orientation anisotropisation more, thus satin fabric is pressed in face on the alignment films, be the ultimate fibre radical of the organizine on top layer or tram be preferably 2000/cm above, more preferably be 3000/cm above, especially be preferably 5000/more than the cm.In addition, the upper limit for the ultimate fibre radical, though radical is many more preferred more, but using producible fiber fine, molten when ultimate fibre fiber number that composite spinning obtains such as to remove be superfine fibre below 0.1 dtex through cutting as described later, can stably obtain the satin fabric that the ultimate fibre radical mostly is 250,000/cm most.
Constitute the fiber that uses in the braid of friction cloth of the present invention and can be long fibre (filament), also can be staple fibre (staple), but the fiber front end exposes the Soft flocks that a few side produces when friction treatment few, more satisfactory, so the preferred braid that is formed by long fibre.Therefore, for this preferred long fibre, though preferred multifilament (multifilament), but formation as multifilament, it can be multifilament with single fiber number, it perhaps also can be the different iso-fineness combined filament yarn of each filamentary fiber number, and then, can also be following core sheath iso-fineness combined filament yarn, described core sheath iso-fineness combined filament yarn be that multifilament demonstrates one or more fiber at configuration heavy denier on the core with high rigidity and fine-titred proterties, the core sheath iso-fineness combined filament yarn that disposes fine-titred plurality of fibers on sheath.
Thus, the multifilament radical that braid is pressed in the organizine of the direction that face on the alignment films and frictional direction be arranged in parallel or tram is many more, when friction treatment, can realize fine and close orientation anisotropisation more, thus the multifilament radical be preferably 70/cm above, more preferably 80/cm above, especially be preferably 90/more than the cm.In addition, in view of making braid, the radical of this multifilament be 200/can stably make braid below the cm, preferred 180/below the cm.In addition, the filamentary radical (long fibre number) that constitutes multifilament is preferably more than 36, more preferably is more than 48, more preferably more than 96, most preferably is more than 144.In addition, though this long fibre number is The more the better,, be below 3000 as the radical that can stably make.
In addition, a filamentary thickness of braid that is used to constitute friction cloth of the present invention is thin more, promptly, the ultimate fibre fiber number is more little to obtain fine more orientationization when friction treatment, therefore the ultimate fibre fiber number be preferably 2.0 dtexs (below, dtex made in the unit brief note) following, more preferably 1.5dtex following, be preferably below the 1.0dtex especially.Though the ultimate fibre fiber number is the smaller the better, but when meticulous, fiber easily cuts off when friction treatment, also can produce Soft flocks sometimes, thus the ultimate fibre fiber number be preferably 0.005dtex above, more preferably 0.01dtex above, be preferably more than the 0.05dtex especially.Need to prove, as the method that obtains the little fiber of above-mentioned ultimate fibre fiber number, can followingly obtain, obtain the fiber of ultimate fibre fiber number by direct fabrics, perhaps carry out behind the sea-island-type composite spun molten the removing of sea component only taken out island component and obtained the little fiber of ultimate fibre fiber number, perhaps carry out fiber being cut fibre behind the composite spinning and obtain the little fiber of ultimate fibre fiber number.
For the filamentary cross sectional shape (fiber shape in the fiber cross section vertical) that constitutes this braid with the fiber axis direction, round or ellipse has the uniform fibers rerum natura, has isotropic bending stress in the fibre section, in addition, also be difficult to produce Soft flocks, therefore preferred especially.Tuo Yuan definition herein is meant that the ratio P (P=S/T) of long axis of ellipse S and minor axis T is the ellipse below 2.0, and this P surpasses at 2.0 o'clock and is defined as platypelloid type described later.On the other hand, according to the characteristic of the alignment films of using and required degree of orientation, filamentary cross sectional shape can suitably adopt platypelloid type, polygon type, Multiblade, hollow type or unsetting type etc.; Particularly because can make the direction of fiber bending have anisotropy, when carrying out friction treatment, improve or weaken the ultimate fibre self rigidity, so filamentary cross sectional shape is preferably polygon, Multiblade; And then, be Multiblade more than three so especially preferably have the polygon of triangle～hexagonal of projection of acute angle or the number of sheets with sharp keen projection because can carry out to realize the fine friction treatment of high meticulous liquid crystal display.
In addition, the organizine or the tram that constitute this braid, promptly form the top layer are preferably formed by uncrimped fibers.Usually when making fabric and knitted fabric and so on fibre, in order to increase winding and the friction between the fiber, form cloth and silk tissue more closely, curl by twisted filament, false twisting, turn such as nuzzle up, be pressed into, non-turns such as excipient, compoundization of multicomponent curl fiber is implemented curling.In the braid that constitutes friction cloth of the present invention, when making braid self, curl or uncrimped fibers though can use, but consider that from the aspect that can form densification and have the friction cloth of fine orientation characteristic the organizine or the tram that form the braid top layer that constitutes friction cloth of the present invention are as mentioned above preferably formed by uncrimped fibers (flat yarn) as goal of the invention.
Consider that from the aspect that can extensively give the frictional behaviour that is suitable for purpose the fiber that uses preferably has the incipient extension elastic modulus more than the 15cN/dtex in the braid that constitutes friction cloth of the present invention.Thus, from being pressed into friction cloth is implemented high-orientation to alignment films friction treatment by brute force, and from bearing the aspect consideration that friction cloth is pressed in the repulsion stress of the moment generation on the alignment films, the high fiber of flexural rigidity (with incipient extension elastic modulus height correlation) of special optimum fiber, incipient extension elastic modulus more preferably 45cN/dtex above, especially be preferably 70cN/dtex above, most preferably be more than the 90cN/dtex.In addition,, can stably make in the scope below 300cN/dtex as the upper limit of this incipient extension elastic modulus, thus preferred, more preferably below the 200cN/dtex.
Even if when the fiber that uses in constituting the braid of friction cloth of the present invention uses the little fiber of ultimate fibre fiber number, optimum fiber does not cut off and has permanance yet, therefore from the above considerations, fracture strength is preferably more than the 2.0cN/dtex, more preferably is more than the 2.5cN/dtex, is preferably more than the 3.0cN/dtex especially.Though this fracture strength is high more good more,, then be fit to make the following fiber of 7.0cN/dtex if consider throughput rate.In addition, for the permanent elongation rate of this fiber, the aspect that fibre deformation is little during from preferred friction treatment considers that the permanent elongation rate is preferably 5～80%, is preferably 5～50% especially.
Though the fiber that uses in the braid that constitutes friction cloth of the present invention can use at least a manufacturing the in natural fiber, semisynthetic fibre, regenerated fibre or the synthon, but from stable fibrous physical property and the viewpoint consideration of preferred long filament as mentioned above, preferred semisynthetic fibre, regenerated fibre, synthon, preferred especially synthon.
As constituting this semisynthetic fibre, regenerated fibre, the polymkeric substance of synthon, for example can enumerate polyester, polyamide, polyimide, vinyl class in polymer such as polyolefin and synthetic for example polymethacrylate polymkeric substance that obtains of other addition polymerizations and polyacrylonitrile base polymer by vinyl, fluorine-based polymer, cellulosic polymer, silicone based polymkeric substance, aromatic ketone or aliphatic ketone, elastic body such as natural rubber and synthetic rubber, other various engineering plastics (engineering plastic), but from thermotolerance and the aspect consideration that is difficult to produce Soft flocks, preferred polyester and/or polyamide.
As this preferred polyamide, can enumerate polyamide by carboxylic acid or carboxylic acid chlorine and amine reaction formation.Particularly, can enumerate nylon 6, nylon 7, nylon 9, nylon 11, nylon 12, nylon 6,6, nylon 4,6, nylon 6,9, nylon 6,12, nylon 5,7, nylon 5,6, nylon 6T, nylon 9 T, MXD6 nylon etc., in addition, in the scope of not damaging the object of the invention, can use other aromatic series separately, aliphatics, alicyclic dicarboxylic acid and aromatic series, aliphatics, the alicyclic diamine composition, perhaps aromatic series, aliphatics, compound such as alicyclic grade has carboxylic acid and amino amino carboxylic acid compounds simultaneously, perhaps also can be the 3rd kind, the 4th kind of polyamide that copolymer composition obtains through copolymerization.
In addition, as this preferred polyester, can enumerate polyester by the esterification formation of carboxylic acid and alcohol.Particularly, can enumerate the polymkeric substance that the ester bond by dicarboxylic acid compound and diol compound forms; As above-mentioned polymkeric substance, can enumerate polyethylene terephthalate (PET), PTT (is also referred to as polytrimethylene terephtalate sometimes; PTT), polytetramethylene terephthalate (PBT), PEN (PEN), poly-naphthalenedicarboxylic acid propylene glycol ester (PPN) and poly terephthalic acid cyclohexanedimethanoester ester aromatic polyesters such as (PCMT) or be the liquid crystal polyester with fused solution crystallinity etc. of principal ingredient with the aromatic hydroxy-carboxylic.And, can use in the polyester that the ester bond by dicarboxylic acid compound and diol compound forms, the multipolymer that other compositions of copolymerization form in the scope of not damaging the object of the invention can make the dicarboxylic acid compound copolymerization.As this dicarboxylic acid compound, can enumerate terephthalic acid (TPA), m-phthalic acid, naphthalenedicarboxylic acid, diphenyl dicarboxylic acid, the anthracene dicarboxylic acid, luxuriant and rich with fragrance dicarboxylic acid, the diphenyl ether dioctyl phthalate, the biphenoxyl ethane dioctyl phthalate, the diphenylethane dioctyl phthalate, hexane diacid, decanedioic acid, 1, the 4-cyclohexane cyclohexanedimethanodibasic, 5-sodium sulfo isophthalate, 5-tetrabutyl m-phthalic acid, azelaic acid, dodecandioic acid, hexahydroterephthalic acid and so on aromatic series, aliphatics, alicyclic dicarboxylic acid and their alkyl, alkoxy, allyl, aryl, amino, imino group, derivants such as halogen thing, addition product, constitutional isomer and optical isomer, a kind of in the above-mentioned dicarboxylic acid compound can be used separately, perhaps also two or more uses can be in the scope of not damaging the object of the invention, made up.
In addition, copolymer composition as this preferred polyester, can make the diol compound copolymerization, as this diol compound, can enumerate ethylene glycol, propylene glycol, butylene glycol, pentanediol, hexanediol, 1, the 4-cyclohexanedimethanol, neopentyl glycol, p-dihydroxy-benzene, resorcinol, dihydroxybiphenyl, naphthalenediol, the anthracene glycol, luxuriant and rich with fragrance glycol, 2, two (4-hydroxy phenyl) propane of 2-, 4,4 '-dihydroxy diphenyl ether, bisphenol S, polyglycol, polypropylene glycol, polytetramethylene glycol and so on aromatic series, aliphatics, alicyclic diol compound and their alkyl, alkoxy, allyl, aryl, amino, imino group, derivants such as halogen thing, addition product, constitutional isomer and optical isomer, a kind of in the above-mentioned diol compound can be used separately, perhaps also two or more uses can be in the scope of not damaging the object of the invention, made up.
In addition, copolymer composition as this preferred polyester, can enumerate the compound that in a compound, has hydroxyl and carboxylic acid, it is hydroxycarboxylic acid, as this hydroxycarboxylic acid, can enumerate lactic acid, the 3-hydracrylic acid, the 3-hydroxybutyric acid, the 3-hydroxypentanoic acid, hydroxybenzoic acid, hydroxynaphthoic acid, the hydroxyl anthroic acid, the hydroxyl phenanthrenecarboxylic acid, (hydroxy phenyl) vinylformic acid and so on aromatic series, aliphatics, alicyclic diol compound and their alkyl, alkoxy, allyl, aryl, amino, imino group, derivants such as halogen thing, addition product, constitutional isomer and optical isomer, a kind of in the above-mentioned hydroxycarboxylic acid can be used separately, perhaps also two or more uses can be in the scope of not damaging the object of the invention, made up.
As this preferred polyester, also can be to have the polyester of the hydroxy carboxylic acid compound of carboxylic acid and hydroxyl for main repetitive with aromatic series, aliphatics, alicyclic an etc. compound, as the polymkeric substance that forms by above-mentioned hydroxycarboxylic acid, can enumerate the polyester that polyglycolic acid, PLA, poly-(3-hydroxybutyric acid), poly-(4 hydroxybutyric acid), poly-(4-hydroxypentanoic acid), poly-(6 hydroxycaproic acid) etc. are formed by hydroxycarboxylic acid; The polyglycolic acid that aliphatics lactones such as glycolide, lactide, butyrolactone, caprolactone etc. are formed by the single monomer polymerization and the kind polyester of PLA, in addition, in the scope of not damaging the object of the invention, can use aromatic series, aliphatics, alicyclic dicarboxylic acid or aromatic series, aliphatics, alicyclic diol composition in above-mentioned poly-(hydroxycarboxylic acid), perhaps also multiple hydroxycarboxylic acid copolymerization can be formed.
In above-mentioned preferred polyester, owing to have high incipient extension elastic modulus, so can make it keep excellent orientation characteristic when in the friction treatment process, constituting braid, or owing to have high-melting-point, so the heat of friction that produces when friction treatment also is difficult to cause fibre deformation, from the above considerations, preferred PET base polymer, PTT base polymer, PBT base polymer, PEN base polymer, PCMT base polymer, PPN base polymer, polyester such as preferred especially PET base polymer, PEN base polymer, PCMT base polymer.
The fiber that uses in the braid that constitutes friction cloth of the present invention preferably uses preferred polyester and/or polyamide as mentioned above, but also can be used alone polyester and/or polyamide, in addition, in the scope of not damaging the object of the invention, also can use multiple polyester and/or polyamide simultaneously.Perhaps as required in the scope of not damaging the object of the invention, also can in the braid that the present invention uses, mix to use and have the fiber of electric conductivity, the fiber that has electrostatic fiber or have retractility.
In addition, in the scope of not damaging the object of the invention, the fiber that uses in constituting the braid of friction cloth of the present invention also can keep following additives on a small quantity, and described adjuvant is flatting agent, fire retardant, lubricant, subtract thick dose, antioxidant, ultraviolet light absorber, infrared absorbent, nucleus agent, fluorescer, end-capping reagent, conductive agent etc.
Friction cloth of the present invention is combined in elastomer layer on the above-mentioned braid and forms.Of the present inventionly close braid and elastomer layer integrated and friction cloth that form when being used for friction treatment, configuration friction cloth makes braid one side contact with alignment films, and elastic body is brought into play braid is pressed in effect on the alignment films.As the raw material that is suitable for this elastomer layer, can use polyurathamc, polyethylene foamed, expanded polypropylene, expanded polystyrene (EPS), foaming PLA or nonwoven fabrics etc.In addition, in order to regulate mechanical properties such as elastic modulus, also can use impregnation to be coated with the nonwoven fabrics and the braid of resins such as polyurethane, melamine.Wherein, particularly consider, more preferably polyurathamc from having the good aspect of cohesive that appropriate elastic force and braid layer close when integrated.Above-mentioned polyurathamc is formed by isocyanate prepolymer composition, polyol component (high molecular weight polyols composition, low molecular weight polyols composition) and cahin extension agent.As isocyanate prepolymer composition, be not particularly limited, can use known compound in polyurethane field.As isocyanate prepolymer composition, can enumerate 2,4-toluene diisocyanate, 2,6-toluene diisocyanate, 2,2 '-methyl diphenylene diisocyanate, 2,4 '-methyl diphenylene diisocyanate, 4,4 '-methyl diphenylene diisocyanate, 1,5-naphthalene diisocyanate, PPDI, m-benzene diisocyanate, terephthaldehyde support aromatic diisocyanates such as diisocyanate, an xylylene diisocyanate; Ethylidene diisocyanate, 2,2,4-trimethyl hexamethylene diisocyanate, 1, aliphatic diisocyanates such as 6-hexamethylene diisocyanate; 1,4-cyclohexane diisocyanate, 4, ester ring type diisocyanate such as 4 '-dicyclohexyl methyl hydride diisocyanate, isophorone diisocyanate, norbornene alkyl diisocyanate.Above-mentioned isocyanates can use a kind of, also can mix two or more uses.As isocyanate prepolymer composition, except that above-mentioned diisocyanate cpd, can also use the above polyfunctional group polyisocyanate compound of three functional groups.As multi-functional isocyanate compound, commercially available a series of diisocyanate additive compound such as Desmodur-N (Bayer corporate system) and trade name Duranate (industry society of Asahi Chemical Industry system).In above-mentioned isocyanate prepolymer composition, preferably use aromatic diisocyanate and ester ring type diisocyanate simultaneously, especially preferably use toluene diisocyanate and dicyclohexyl methyl hydride diisocyanate simultaneously.As the high molecular weight polyols composition, can enumerate with the polytetramethylene ether glycol is the polyether glycol of representative; With the poly adipate succinic acid ester is the polyester polyol of representative; The polycaprolactone polyvalent alcohol; With reactant of polycaprolactone and so on polyester-diol and alkylene carbonate etc. is the polyester-polycarbonate polyvalent alcohol of example; Make ethylene carbonate and polyol reaction, then reaction mixture and the organic dicarboxylic acid that obtains reacted and the polyester-polycarbonate polyvalent alcohol of formation; And the polycarbonate polyol that obtains of the ester exchange reaction by polyol and aryl carbonates.Mentioned component can be used alone, and also can use two or more simultaneously.The number-average molecular weight of high molecular weight polyols composition is not particularly limited, and considers from the viewpoints such as elastic property of gained urethane resin, is preferably 500～2000.If number-average molecular weight less than 500, then uses the urethane resin of these compositions not have the sufficient elasticity characteristic, form crisp polymkeric substance.On the other hand, if number-average molecular weight surpasses 2000, then use the urethane resin of these compositions can become soft.As polyol component, except that above-mentioned high molecular weight polyols composition, preferably make spent glycol, 1 simultaneously, 2-propylene glycol, 1, ammediol, 1,4-butylene glycol, 1,6-hexanediol, neopentyl glycol, 1,4-cyclohexanedimethanol, 3-methyl isophthalic acid, 5-pentanediol, diglycol, triethylene glycol, 1, low molecular weight polyols compositions such as two (2-hydroxyl-oxethyl) benzene of 4-.Also can use low-molecular-weight polyamine compositions such as ethylenediamine, toluene diamine, diphenylmethane diamine, diethylene triamine.(number average) molecular weight of low molecular weight polyols composition and low-molecular-weight polyamine composition is preferably below 250 less than 500.When adopting prepolymer method to make the urethane resin foaming body, in the curing of prepolymer, use cahin extension agent.Cahin extension agent is the organic compound with at least two above reactive hydrogen bases, as the reactive hydrogen base, can enumerate hydroxyl, primary amino radical or secondary amino group, sulfydryl (SH) etc.Particularly, can enumerate the polyamines class, or above-mentioned low molecular weight polyols composition and low-molecular-weight polyamine composition, described polyamines class can enumerate 4,4 '-di-2-ethylhexylphosphine oxide (o-chloraniline) (MOCA), 2,6-two chloro-p-phenylenediamine (PPD), 4,4 '-di-2-ethylhexylphosphine oxide (2, the 3-dichloroaniline), 3, two (methyl mercapto)-2 of 5-, the 4-toluene diamine, 3, two (methyl mercapto)-2 of 5-, the 6-toluene diamine, 3,5-diethyl Toluene-2,4-diisocyanate, the 4-diamines, 3,5-diethyl Toluene-2,4-diisocyanate, the 6-diamines, two p-aminobenzoic acid trimethylene glycol esters, 1, two (the 2-aminobenzene sulfenyl) ethane of 2-, 4,4 '-diamido-3,3 '-diethyl-5,5 '-dimethyl diphenylmethane, N, N '-two sec-butyl-4,4 '-diaminodiphenyl-methane, 3,3 '-diethyl-4,4 '-diaminodiphenyl-methane, m-xylene diamine, N, N '-di-sec-butyl-p-phenyl enediamine, m-phenylene diamine and p dimethylamine etc.Above-mentioned cahin extension agent can use a kind of, also can mix two or more.The ratio of isocyanate prepolymer composition, polyol component and cahin extension agent can carry out various changes according to each molecule and desired rerum natura etc.The manufacturing of urethane resin foaming body can be in the foaming any one of prepolymer method, a step, the physical characteristics excellence of the urethane resin that obtains with prepolymer method, be preferred, described prepolymer method by isocyanate prepolymer composition and the terminal prepolymer of polyol component synthesizing isocyanate, makes it to react with cahin extension agent in advance.Need to prove that molecular weight is excellences such as the processability, physical characteristics of the terminal prepolymer of about 800～5000 isocyanates, is preferred.As the manufacture method of urethane resin foaming body, can enumerate the method for adding the hollow pearl ball, mechanical foaming method, chemical blowing process etc.
In addition, as the additive method that obtains polyurathamc, can adopt the method that the polyurethane wet type is solidified.This method is after urethane resin being dissolved in water Combination solvents such as DMF, make its curtain coating on processing release paper or film, the method in the aqueous solution of water or above-mentioned water Combination solvent with this processing release paper or film immersion is the method that forms little porous structure when displacement polyurethane such as water Combination solvent and water solidify.
With this elastic body of obtaining as mentioned above and braid layer is closed integrated and form friction cloth, as this incorporate method, preferably undertaken by flame laminating (flame laminate) method and bonding (bonding) method integrated owing to do not follow thermal treatment, so Method for bonding more preferably.That is,, can preferably use on braid or elastic body one side and give bonding agent, the method for fitting with the opposing party as method with braid and elastomer bonded.As above-mentioned bonding agent, can suitably select to use acrylic resin, polyurethanes resin, polyester resin, polyurethanes resin.As the method for giving above-mentioned bonding agent, can adopt following method, described method comprises the method that bonding agent is heated to the above melt coating of fusing point; Be dissolved in bonding agent in the solvent or be scattered in the method that is coated with under the state in the water.In addition, can also adopt bonding agent is shaped to nonwoven fabrics or membranaceous, it is clipped in carry out hot pressing between braid and the elastic body and make its bonding method.Though this Method for bonding comprises method and the fixing comprehensively method that braid and elastic body are fixed at several points, but in friction treatment,, especially preferably use bonding agent with braid and the fixing comprehensively method of elastic body for fear of producing dislocation between knitted fabric and the elastic body.
Friction cloth of the present invention is to use elastic body to form, and this elastic body is 10% o'clock stress (P1) of compression and the elastic body of ratio R (R=P2/P1) in 0.90≤R≤2.00 scopes that compresses 50% o'clock stress (P2) on the thickness direction of friction cloth preferably.Usually when friction treatment, the friction roller that will form side face with friction cloth contacts while rotating being formed on the alignment films of substrate surface, and make it to move linearly, give the orientation anisotropy to alignment films, friction roller is contacted to separating process with alignment films, distance between roller curved surface and the alignment films recurs variation with the rotation of roller, and promptly friction cloth bears continuous compression deformation at the thickness direction of friction cloth in the process of roller rotation.When friction treatment, preferably the orientation characteristic of friction cloth does not change as much as possible yet in this a series of compression deformation process, finishes orientation process with certain stress.That is, of the present invention with braid and elastomer layer close the integrated and friction cloth that forms preferably in above-mentioned continuous compression deformation process the stress during compresses elastomeric do not change yet.Therefore, by use 10% o'clock stress (P1) of compression and the elastic body of ratio R (R=P2/P1) in the scope of 0.90≤R≤2.00 that compresses 50% o'clock stress (P2), the orientation characteristic that friction cloth of the present invention can be played stably on the thickness direction of friction cloth in friction.Thus, consider that from having the viewpoint of not having the irregular stable frictional behaviour of orientation this is further more preferred in the scope of 0.90≤R≤1.80, in the scope particularly preferably in 1.00≤R≤1.50 than R.
Though friction cloth of the present invention can be by the thickness of the rubbing device decision friction cloth that uses, but consider that from the aspect that elastomeric repulsion characteristic effectively plays a role the thickness of friction cloth is preferably more than the 0.5mm, more preferably is more than the 1.0mm, more preferably more than the 1.5mm.In addition, the aspect that is difficult to be installed in when blocked up on the rubbing device considers that the upper limit of the thickness of this friction cloth is preferably below the 20mm, more preferably below the 10mm.
Following concrete and illustrate in greater detail the present invention according to embodiment, but the present invention is not limited to these embodiment.Need to prove that the physics value among the embodiment is measured by the following method.
Embodiment
A. the mensuration of ultimate fibre fiber number [dtex (dtex)]
Fiber (multifilament) reeled yarn is become length 100m, measure the weight (g) of the fiber that above-mentioned reeled yarn obtains, income value be multiply by 100.To similarly measure 3 mean values obtaining fiber number as this multifilament, the value that this fiber number is obtained divided by the filamentary radical that constitutes multifilament is 2 with significant figure and calculates as ultimate fibre fiber number [dtex].
B. the mensuration of the incipient extension elastic modulus of fiber, permanent elongation rate, fracture strength
Use Orientec corporate system TENSIRON cupping machine (TENSIRON UCT-100), if undrawn yarn is then with initial specimen length 50mm, draw speed 400mm/ minute, if drawn yarn is then measuring incipient extension elastic modulus (only drawn yarn), fracture strength and permanent elongation rate in initial specimen length 200mm, draw speed 200mm/ minute respectively, will measure the mean value that obtains for 5 times as separately measured value.The incipient extension elastic modulus is following to be obtained, and is that 100cm/ minute, stress full scale (full range) are that 500g carries out record with recording chart speed on recording chart, is obtained by the slope of a curve of incipient extension.Incipient extension elastic modulus, residual length growth rate, fracture strength all are 2 with significant figure and calculate.
C. elastic body compresses the calculating of ratio R (R=P2/P1) of stress (P1) with 50% o'clock stress (P2) of compression at 10% o'clock
The following mensuration of 7. compression deflection B methods based on JIS K6400-2 (2004), in temperature is that 23 ℃, relative humidity are under 50% the atmosphere, use sample size to be the coupons of 300mm as the length of thickness 50mm, length and width, with the increased pressure board of diameter 200mm with the press-in speed for after per minute 100mm is depressed into 75% thickness of coupons, remove increased pressure board with identical speed, write down above-mentioned a series of compression-stress curve automatically.Being 3 with the stress (P2) that is pressed at 50% o'clock with significant figure by 10% o'clock stress (P1) of compression then calculates it and compares R.
D. be orientated the evaluation of (orientation adjusting power) evaluation of voltinism energy and Soft flocks
Manufacturing is carried out friction treatment as the substrate with alignment films of friction treatment object and is estimated.Particularly, use the foursquare glass substrate of 10cm, on the other hand, friction cloth is sticked on the stainless steel friction roller of φ 50mm with double sticky tape, be installed on the rubbing device with polyimide system alignment films.Need to prove, the following formation of polyimide system alignment films, (daily output chemistry system SE-7492) is coated on the glass substrate with polyimide precursor solution, cures in 250 ℃.
On rubbing device, Yi Bian make friction roller with rotation number 1500rpm rotation, Yi Bian the cloth that will rub is close to alignment films, the surface that the cloth that rubs is pressed in alignment films extremely begins to count with thickness 50% thickness (above-mentioned state is called the amount of being pressed into 50%) from the surface.Under above-mentioned state, the platform (Stage) that carried substrate moved to certain orientation with translational speed 30mm/ second carry out friction treatment.Each friction is after cloth carries out above-mentioned friction treatment to two plate bases, and opposed to make the friction treatment direction of two plate bases be that Anti-Parallel (antiparallel) forms the unit with alignment films.Then, in the gap of two plate bases, enclose liquid crystal.The gap of final liquid crystal cells is about 5 μ m.
The liquid crystal cells that manufacturing is obtained is clipped between two Polarizers, sees through light and observes the state of orientation of visualization liquid crystal.At this moment, compare with the light intensity of position outside seeing through liquid crystal cells, the good liquid crystal cells of the permeability of light be have abundant orientation voltinism can liquid crystal cells, be excellent (dual circle); Though the vestige that liquid crystal flows during residual inclosure liquid crystal perhaps a little less than the orientation voltinism energy of liquid crystal, can be seen to see through light, be well (zero) this moment; The liquid crystal cells of cannot see fully through light is poor (△).
In addition, on the alignment films of friction treatment end back, reach the alignment films end with the alignment films on the Keyence of Co., Ltd. system DIGITALMICROSCOPE VHX-100 observation substrate.On alignment films and the alignment films end is not seen fully or when seeing the dregs of several Soft flocks, be excellent (dual circle); Though on alignment films and the alignment films end see the dregs of Soft flocks, when being less than the friction cloth that forms by the fine hair fleece of comparative example 2, be good (zero); On alignment films and the amount of the dregs of the Soft flocks seen of alignment films end and comparative example 2 on an equal basis or more for a long time, be poor (△).
(method for making of polyethylene terephthalate (PET)): carry out polycondensation reaction as polycondensation catalyst, 0.06 weight portion, four hydration cobalt acetates as toner as painted agent, the 0.06 weight portion antimony trioxide of preventing in the oligomer that common esterification obtains, adding 0.03 weight portion phosphoric acid, 85% aqueous solution by 166 weight portion terephthalic acid (TPA)s and 75 weight portion ethylene glycol, obtain polyethylene terephthalate (following PET) particle of normally used IV0.66.
(manufacturing of PTT (PTT)): add 130 parts of (6.7 molar part) dimethyl terephthalate (DMT), 114 parts of (15 molar part) 1, ammediol, 0.24 part of (0.014 molar part) hydration calcium acetate, 0.1 part of (0.01 molar part) two hydration lithium acetate, distillation for removing methanol carries out ester exchange reaction on one side on one side, in the oligomer that obtains, add 0.065 part of trimethyl phosphate and 0.134 part of four titanium butoxide, distillation on one side removes 1, ammediol carries out polycondensation reaction on one side, obtains the prepolymer of sheet.Further the prepolymer that obtains is flowed down and carries out solid phase in 220 ℃, nitrogen, obtain PTT (PTT) particle of IV1.16.When being used for melt spinning, used in 10 hours above-mentioned PTT particle in 150 ℃ of vacuum drying.
(manufacturing of organizine 1): with above-mentioned PET particle in 150 ℃ of vacuum drying 10 hours, with extrusion type melt spinning machine with biaxial extruder (axial length L/ diameter of axle D=35), the spinning head that the aperture is set is 0.20mm, hole count and be 144 circular port shape under 280 ℃ of spinning temperatures carries out melt spinning, with effective constituent is after the adhesion amount of 1 weight % adheres to aqueous treatment agent (effective constituent concentration is 20 weight %), draw rate tractive with 1500m/ minute carries out melt spinning, obtains batching silk.
When stretching to batching the multifilament that obtains, with the wire feed rate of thread delivering roller be 320m/ minute, the 1st roller in 80 ℃ of wires feed rate be 320m/ minute, the 2nd roller in 120 ℃ of wires feed rate be 800m/ minute, the 3rd roller in the room temperature wire feed rate be fiber implemented to stretch in 800m/ minute and thermal treatment after, silk is cooled to the glass temperature (Tg of polyester with cold roller; 77 ℃) batch after following, obtaining by the fibre section that several 144 of fiber number 144dtex, the multifilament of multifilament, ultimate fibre fiber number 1.00dtex form is the multifilament drawn yarn (organizine 1) of justifying.The fibrous physical property of organizine 1 is shown in the hurdle of fabric 1 of table 1.
(manufacturing of tram 1): except that use the aperture in the manufacturing of above-mentioned organizine 1 is 48 the spinning head of circular apertures shape as 0.30mm, hole count, after adopting the method enforcement melt spinning same with the manufacturing of organizine 1, stretching, thermal treatment, obtaining by the fibre section that several 48 of fiber number 56dtex, the long fibre of multifilament, ultimate fibre fiber number 1.17dtex form is round multifilament drawn yarn (tram 1).
(manufacturing of fabric 1): the long fibre radical that uses organizine 1 and tram 1 (be and do not have flat the spinning of curling) to make organizine is that the long fibre radical of 100/cm, tram is 10 satin weaves through the face satin weave that are of 44/cm.
[table 1]
[table 1]
* 1 method for making: the manufacture method of following expression fiber.
Direct fabrics: drawn thermal treatment obtains the method for fiber behind the melt spinning, silk is not processed and is only obtained the method for fiber by spinning.
Molten removing: the method that only obtains island component with the sea component of dissolution with solvents island composition fiber.
Cut fibre: the silk stress application is cut it, obtain the method for fine-titred fiber.
* 2 long fibre numbers: the filamentary radical that constitutes multifilament.
* the kind of 3 satin fabrics: with the overlapping radical synonym of organizine or tram, if this repetition radical is 5 and then is called " 5 satin weaves " if 10 then are called " 10 satin weaves ".
* 4 long stapled radicals: satin fabric is pressed in the face on the alignment films and the be arranged in parallel radical of multifilament of every 1cm width of organizine of direction of frictional direction.
* 5 ultimate fibre radicals: the ultimate fibre radical that is pressed in every 1cm width of the organizine that exposes than multifilament in the face on the alignment films.
PET: polyethylene terephthalate, PEN: PEN, PTT: PTT,
PBT: polybutylene terephthalate, Ny6: nylon 6
( organizine 2,3,10 manufacturing): with extrusion type composite molten spinning-drawing machine with two biaxial extruders (axial length L/ diameter of axle D=35), island component uses PET, sea component use copolymerization 15 weight % mean molecular weight be the PEG copolymerization PET of 1000 polyglycol (PEG), make islands-in-sea bicomponent fibre (organizine 2:36 island * hole count 8, organizine 3:70 island * hole count 35) or carry out core sheath composite spinning (core: PET, sheath: PEG copolymerization PET, the core sheath is shaped as 144 of the hole counts of Fig. 2 spinning head), at spinning temperature is to carry out melt spinning under 275 ℃ respectively, in addition, adopt to batch and obtain multifilament with the same method of organizine 1.Adopt with the same method of organizine 1 to stretch and thermal treatment, obtain the multifilament drawn yarn respectively batching the multifilament that obtains.The fiber that obtains is obtained organizine 2, organizine 3, organizine 10 with the processing of 1% sodium hydrate aqueous solution.
(manufacturing of organizine 4～9): remove in the manufacturing of above-mentioned organizine 1, uses respectively and table 1 shown in long fibre count the spinning head of the hole count of equal number (aperture be 0.30mm ( organizine 4,5,7,9), 0.20mm (organizine 6,8)), the same method of manufacturing of employing and organizine 1 is after enforcement melt spinning, stretching, the thermal treatment, obtaining the fibre section shown in the table 1 is the round flat multifilament drawn yarn that spins (organizine 4～7,9).Need to prove,, obtained as the crimped filament of having implemented 100T/m twisted filament processing for organizine 8.
(manufacturing of organizine 11～14): in the manufacturing of above-mentioned organizine 1, use (the organizine 11:M﹠amp of the polymkeric substance shown in the table 1 respectively; G Polymers corporate system PEN HIPERTUF 90000; Following PEN, organizine 12:PTT, organizine 13: the system polybutylene terephthalate 1100SS of Dongli Ltd. type; Following PBT, organizine 14: Dongli Ltd.'s system nylon 6300 types), use with long fibre and count the spinning head (aperture is 0.20mm) of the hole count of equal number, spinning temperature is respectively 310 ℃ (organizine 11), 250 ℃ (organizine 12,13,14), in addition, the same method of manufacturing of employing and organizine 1, after enforcement melt spinning, stretching, the thermal treatment, obtaining the fibre section shown in the table 1 is the round flat multifilament drawn yarn that spins (organizine 11～14).
(manufacturing of fabric 2～14): when similarly using the long fibre radical of tram 1 manufacturing tram to be the warp satin of 44/cm with fabric 1, above-mentioned organizine 2～14 is used for organizine, in addition, press the kind of the satin weave shown in the table 1, the long fibre radical of organizine and the ultimate fibre radical of organizine and make warp satin (fabric 2～14).
Comparative example 2
The rayon fleece of putting down in writing among the table 1No.5 among the embodiment of use patent documentation 2 is estimated orientation voltinism energy and Soft flocks similarly to Example 1.Need to prove, elastic body is not set equally with comparative example 1.The orientation voltinism can be good, but the Soft flocks as many as buries in alignment films, even if also can't remove with the pure water washing, with regard to Soft flocks orientationization poor performance.
[table 2]
※ 5P1: 10% o'clock stress of compression on the thickness direction of friction cloth
※ 6P2: 50% o'clock stress of compression on the thickness direction of friction cloth
※ 7 is than the ratio R=P2/P1 of R:P1 with P2.
Claims (9)
1, a kind of friction cloth closes braid and elastomer layer integrated and forms.
2, friction cloth as claimed in claim 1 is characterized in that, braid is a satin fabric.
3, friction cloth as claimed in claim 1 or 2 is characterized in that, the fiber that constitutes braid is a long fibre.
4, as claim 2 or 3 described friction cloth, it is characterized in that, the ultimate fibre radical that forms the organizine on satin fabric top layer or tram be 2000/more than the cm.
As each described friction cloth in the claim 2～4, it is characterized in that 5, the organizine of satin fabric and intersecting of tram are the repetition more than 5.
As each described friction cloth in the claim 2～5, it is characterized in that 6, becoming the organizine on satin fabric top layer or the ultimate fibre fiber number of tram is below 2.0 dtexs.
As each described friction cloth in the claim 2～6, it is characterized in that 7, the organizine or the tram that form the satin fabric top layer are formed by polyester and/or polyamide.
As each described friction cloth in the claim 2～7, it is characterized in that 8, the organizine or the tram that form the satin fabric top layer are formed by uncrimped fibers.
9, as each described friction cloth in the claim 1～8, it is characterized in that, use 10% o'clock stress (P1) of compression and the elastic body of ratio R (R=P2/P1) in 0.90≤R≤2.00 scopes that compresses 50% o'clock stress (P2) on the thickness direction of friction cloth.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP150530/2007 | 2007-06-06 | ||
| JP2007150530 | 2007-06-06 | ||
| PCT/JP2008/060177 WO2008149847A1 (en) | 2007-06-06 | 2008-06-03 | Rubbing cloth |
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| Publication Number | Publication Date |
|---|---|
| CN101681066A true CN101681066A (en) | 2010-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880018656A Pending CN101681066A (en) | 2007-06-06 | 2008-06-03 | Rubbing cloth |
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| Country | Link |
|---|---|
| JP (1) | JP5272525B2 (en) |
| KR (1) | KR20100017618A (en) |
| CN (1) | CN101681066A (en) |
| TW (1) | TW200916919A (en) |
| WO (1) | WO2008149847A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102236212A (en) * | 2011-07-21 | 2011-11-09 | 昆山龙腾光电有限公司 | Method for adjusting rubbing strength in liquid crystal display panel manufacturing process |
| CN103364997A (en) * | 2012-03-27 | 2013-10-23 | 富士胶片株式会社 | Rubbing treatment method, and optical film manufacturing method |
| CN103558715A (en) * | 2013-11-12 | 2014-02-05 | 北京京东方光电科技有限公司 | Friction cloth and friction device |
| CN104965353A (en) * | 2015-07-23 | 2015-10-07 | 合肥鑫晟光电科技有限公司 | Friction roller |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5855461B2 (en) * | 2009-11-06 | 2016-02-09 | セーレン株式会社 | Rubbing cloth |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01297619A (en) * | 1988-05-25 | 1989-11-30 | Asahi Chem Ind Co Ltd | Rubbing material |
| JPH03163528A (en) * | 1989-11-22 | 1991-07-15 | Toray Ind Inc | Rubbing cloth for producing liquid crystal element and production of liquid crystal element |
| JPH03209428A (en) * | 1990-01-12 | 1991-09-12 | Matsushita Electric Ind Co Ltd | Rubbing device |
| WO2001061083A1 (en) * | 2000-02-21 | 2001-08-23 | Kanebo, Limited | Modified cross-section fiber and production method therefor |
| JP2005091899A (en) * | 2003-09-18 | 2005-04-07 | Kanebo Ltd | Rubbing cloth |
-
2008
- 2008-06-03 WO PCT/JP2008/060177 patent/WO2008149847A1/en active Application Filing
- 2008-06-03 CN CN200880018656A patent/CN101681066A/en active Pending
- 2008-06-03 KR KR1020097025337A patent/KR20100017618A/en not_active Application Discontinuation
- 2008-06-05 JP JP2008147723A patent/JP5272525B2/en not_active Expired - Fee Related
- 2008-06-05 TW TW097120853A patent/TW200916919A/en unknown
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102236212A (en) * | 2011-07-21 | 2011-11-09 | 昆山龙腾光电有限公司 | Method for adjusting rubbing strength in liquid crystal display panel manufacturing process |
| CN102236212B (en) * | 2011-07-21 | 2012-10-03 | 昆山龙腾光电有限公司 | Method for adjusting rubbing strength in liquid crystal display panel manufacturing process |
| CN103364997A (en) * | 2012-03-27 | 2013-10-23 | 富士胶片株式会社 | Rubbing treatment method, and optical film manufacturing method |
| CN103364997B (en) * | 2012-03-27 | 2015-08-05 | 富士胶片株式会社 | The manufacture method of rubbing treatment method and blooming |
| CN103558715A (en) * | 2013-11-12 | 2014-02-05 | 北京京东方光电科技有限公司 | Friction cloth and friction device |
| CN103558715B (en) * | 2013-11-12 | 2016-04-06 | 北京京东方光电科技有限公司 | Friction cloth and rubbing device |
| CN104965353A (en) * | 2015-07-23 | 2015-10-07 | 合肥鑫晟光电科技有限公司 | Friction roller |
| US10126574B2 (en) | 2015-07-23 | 2018-11-13 | Boe Technology Group Co., Ltd. | Rubbing roller |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008149847A1 (en) | 2008-12-11 |
| KR20100017618A (en) | 2010-02-16 |
| TW200916919A (en) | 2009-04-16 |
| JP2009015317A (en) | 2009-01-22 |
| JP5272525B2 (en) | 2013-08-28 |
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