CN100447213C - Double faced adhesive tape for grinding cloth and grinding sheet with the adhesive tape for roller winding - Google Patents

Double faced adhesive tape for grinding cloth and grinding sheet with the adhesive tape for roller winding Download PDF

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Publication number
CN100447213C
CN100447213C CNB2004100837120A CN200410083712A CN100447213C CN 100447213 C CN100447213 C CN 100447213C CN B2004100837120 A CNB2004100837120 A CN B2004100837120A CN 200410083712 A CN200410083712 A CN 200410083712A CN 100447213 C CN100447213 C CN 100447213C
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China
Prior art keywords
abrasive
cloth
abrasive cloth
double faced
faced adhesive
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CN1621472A (en
Inventor
藤永壮一郎
末田和
广田靖保
西口健次
酒井盾彦
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Okura & Co., Ltd.
Lintec Corp
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Okura & Co Ltd
Lintec Corp
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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1337Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/13378Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
    • G02F1/133784Surface-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
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F2202/00Materials and properties
    • G02F2202/02Materials and properties organic material

Abstract

The invention aims to provide a double-sided adhesive tape to which a rubbing cloth is adhered and which can prevent the development of the floatation of the double-sided adhesive tape on an interface between the double-sided adhesive tape and a roller to reduce the irregularity of the orientation of the rubbing cloth and the like, and to provide a rubbing sheet which is obtained by integrating the double-sided adhesive tape with one or more rubbing cloths and can correspond to a large rubbing roller. This double-sided adhesive tape to which the rubbing cloth is adhered and which has an adhesive layer I to be adhered to a roller on one side of a substrate film and an adhesive layer II to be adhered to the rubbing cloth on the other side is characterized by using a film having tensile stress of <=3,000 MPa on 1 % stretching as the substrate film. The rubbing sheet to be wound and adhered to the roller is characterized by integrally adhering at least one rubbing cloth to the adhesive layer II of the double-sided adhesive tape so that the piles of the rubbing cloth are arranged on the surface side of the rubbing sheet.

Description

The abrasive cloth double faced adhesive is pasted band and is adhered to its roller winding abrasive sheet
Technical field
The present invention relates to the roller winding abrasive sheet that the abrasive cloth double faced adhesive is pasted band and adhered to it.Say in further detail, relate to and be used on roller reeling for the abrasive cloth that the alignment films of liquid crystal indicator etc. carried out milled processed, suppress double faced adhesive tape and produce at interface to float etc. and paste band and adhere to the roller winding abrasive sheet of this double faced adhesive tape with the abrasive cloth double faced adhesive that reduces the orientation spot with roller.
Technical background
In the past, for the liquid crystal molecular orientation of the alignment films that limits liquid crystal indicator and carry out milled processed.The cloth that is used for this processing is called abrasive cloth, the velvet stuff that uses fine hair to be made of fibers such as cotton, artificial cotton, triacetate fibers.Abrasive cloth adheres to through double faced adhesive tape and carries out milled processed on the mixing roll.Through milled processed repeatedly, the abrasion of the tomentum of abrasive cloth need to strip down from mixing roll after therefore finishing given circulation, replace new abrasive cloth.Therefore, double faced adhesive tape wishes together to peel off with abrasive cloth and caking agent can not remain on the roller faces during exchange.Described double faced adhesive tape usually uses the splicing tape (as reference patent documentation 1) that bond layer is set on the base material film two sides that is made of pet film of thickness 10~30 μ m degree.
In recent years, for maximization and the productivity that improves liquid crystal indicator, along with the glass sheet size that is formed with the multi-disc alignment films that is called female glass usually becomes big, fixedly the length of the mixing roll of abrasive cloth is also elongated.Therefore as abrasive cloth, used velvet stuff normally is made into 110~150cm wide cut, and for corresponding to rectangular mixing roll, a kind of strong means are being ground the vertical direction adhesion multi-disc abrasive cloth of roll shaft for cutting apart abrasive cloth.
The method that adheres to the multi-disc abrasive cloth on mixing roll can consider 1) be stained with double faced adhesive tape at mixing roll earlier, arrange and adhere to the method for abrasive cloth then in the above; 2) be wound up into the method on the mixing roll after the one side that in advance the multi-disc abrasive cloth is adhered to double faced adhesive tape makes it integrated.
As the method that abrasive cloth is installed on the mixing roll, usually the method for carrying out is, at first peel off double faced adhesive tape one side's peeling sheet, make the bond layer that exposes up, be placed on given position, place mixing roll in its end, by rotating this roller, after pasting double faced adhesive tape on the mixing roll, make abrasive cloth fine hair be placed on given position down, peel off the another side peeling sheet of the double faced adhesive tape that sticks on the mixing roll, same rotation is attached with the mixing roll of double faced adhesive tape, adheres to abrasive cloth.
In described (1) method, the base material film two sides that constitutes by pet film at thickness 25 μ m in the past, when use is provided with the double faced adhesive tape adhesion abrasive cloth of bond layer, do not float though do not produce between mixing roll and the double faced adhesive tape, but the fine hair of abrasive cloth is slightly towards oblique inclination, pressure during therefore according to stickup, the problem that exists abrasive cloth to misplace.
Also have, in described (2) method, equally on the base material film two sides that constitutes by pet film of thickness 25 μ m in the past, when use is provided with the double faced adhesive tape adhesion abrasive cloth of bond layer, though can on double faced adhesive tape, accurately and firmly adhere to abrasive cloth, and can accurately paste on the mixing roll, float but can produce between mixing roll and the double faced adhesive tape.
This phenomenon is considered as follows.Low (the PET25 μ m: the about 80mN of the sharp rigidity of lattice, abrasive cloth: the sharp rigidity about 400~800mN) of lattice of double faced adhesive tape base material and abrasive cloth self rigidity.Thereby, in described (1) method, can not produce with floating and adhere to.If but their becoming one lamination thing, then will to improve one digit number be about 5000~8000mN to the sharp rigidity of lattice, by interior periphery difference generation internal stress, produces between mixing roll and double faced adhesive tape and float when sticking to its lamination thing on the cylindric mixing roll.(the sharp rigidity of lattice: based on JTAPPI paper pulp test method No.40, use gringnard type permeability softness tester (the smart mechanism of (strain) Japan is done manufacturing), measure double-sided belt base material and abrasive cloth both sides, with its mean value as the sharp rigidity of lattice.The lamination thing is, is provided with abrasive cloth in the one side of double faced adhesive tape base material and pastes on the material with bond layer and paste abrasive cloth, and method same as described above is measured.)
Also have, if being positioned at the part of cut-off part fine hair of the abrasive cloth of mixing roll central authorities misplaces according to the background fabric tissue, under the long state of villus length, carry out milled processed, if perhaps under the fine hair of dislocation is rolled into the state of other fine hair part, carry out milled processed in the process of lapping, may become the reason that alignment films produces the orientation spot.Thereby, need make the fine hair of cut surface be difficult to dislocation.
[patent documentation 1] spy opens the 2002-220570 communique
Summary of the invention
The present invention just is based on these situations, purpose is to provide a kind of and is used for reeling on mixing roll for the abrasive cloth of milled processed liquid crystal indicator alignment films etc., and for problem corresponding to " adhering to the simplification and certainization of operation; " corresponding to large-size glass substrate, produce the abrasive cloth double faced adhesive stickup band that floats at the mixing roll interface and suppress double faced adhesive tape, and this double faced adhesive tape and 1 above becoming one of cloth, can be corresponding to the reduced orientation spot of rectangular roller or the roller winding abrasive sheet of the orientation flaw.
Present inventors are in order to reach found that described purpose concentrates on studies repeatedly, reel with abrasive sheet for double faced adhesive tape and 1 incorporate mixing roll of above abrasive cloth, produce and float in order to suppress between mixing roll and the bond layer interface, can relax on roller, adhering to the internal stress that produces when mixing roll after integrated is reeled with abrasive sheet base material film, down to the following opinion of acquisition with double faced adhesive tape.And find, constitute the filling that constitutes by the thermoplastic synthetic fiber of base fabric and the state of the mutual welding of other fillings, perhaps the thermoplastic synthetic fiber of filling be out of shape because of fusion state the time, the fine hair that helps the abrasive cloth cut surface is difficult to dislocation, so that obtain following opinion.
Be that the present invention can provide:
(1) a kind of abrasive cloth double faced adhesive is pasted band, it is characterized in that: it is that one side at base material film has the bond layer I that pastes on the roller, another side has the abrasive cloth double faced adhesive of the bond layer II that pastes abrasive cloth and pastes band, uses the film of tensile stress below 3000MPa that stretched as base material film at 1% o'clock.
(2) paste band as the abrasive cloth double faced adhesive of (1) record, it is characterized in that: the tensile stress that base material film stretched 1% o'clock is 200~2600MPa.
(3) paste band as the abrasive cloth double faced adhesive of (1) or (2) record, it is characterized in that: base material film is a film of polyolefin resin.
(4) paste band as the abrasive cloth double faced adhesive of any record of (1)~(3), it is characterized in that: with base material film stretch 10% and stop to stretch 1 minute after stress below 20N/15mm.
(5) a kind of roller winding abrasive sheet is characterized in that: paste at the abrasive cloth double faced adhesive of any record of (1)~(4) on the bond layer II of band and adhere to 1 slice lapping cloth at least, make fine hair become face side and carry out integrated.
(6) as the roller winding abrasive sheet of (5) record, it is characterized in that: the multi-disc abrasive cloth is corresponding mutually to being connected into the selvedge edge, stride across the joint continuity adhesion double faced adhesive tape that described butt joint cloth edge forms, the multi-disc abrasive cloth is joined.
(7) as the roller winding abrasive sheet of (6) record, it is characterized in that: the joint of abrasive cloth is a linearity, and abrasive cloth is 0 degree~45 degree to the angle of grinding direction.
(8) the roller winding abrasive sheet of putting down in writing as (5)~(7), it is characterized in that: abrasive cloth is for weaving the woven velvet stuff of fine hair with fastening pile pattern on base fabric, described fine hair is the fiber that is selected from cotton, artificial cotton, cellulose acetate, koplon, day silk, nylon, polyester and the polyvinyl, and constitutes the warp thread of filling of described base fabric and weft yarn both sides or a side and be made of the thermoplastic synthetic fiber.
(9) the roller winding abrasive sheet of putting down in writing as (5)~(8), it is characterized in that: the cloth edge of abrasive cloth is fused, become and constitute the filling that constitutes by the thermoplastic synthetic fiber of base fabric and the state of the mutual welding of other fillings at this edge, perhaps the state that is out of shape because of fusion of the thermoplastic synthetic fiber of filling.
According to the present invention, can provide a kind of is used on mixing roll reeling for the abrasive cloth of milled processed liquid crystal indicator alignment films etc., and suppress double faced adhesive tape and produce the abrasive cloth double faced adhesive stickup band that floats with minimizing orientation spot at the mixing roll interface, and this double faced adhesive tape and 1 above becoming one of cloth, can be corresponding to the roller winding abrasive sheet of large-scale mixing roll.
Also have, for described roller winding abrasive sheet of the present invention, velvet stuff as abrasive cloth is, by select constituting the filling of base fabric, adopt the heat fusing process of chopping when cutting off abrasive cloth, make be cut off between the filling melting adhered, perhaps the leading section of filling becomes spherical or deformation state such as flats, to prevent that fine hair from peeling off or come off, its result can further reduce the orientation flaw or orientation spot, for rectangular mixing roll also effective correspondence.
Abrasive cloth double faced adhesive of the present invention is pasted band and is used in and reels on the roller for the alignment films of liquid crystal indicator etc. being carried out the abrasive cloth of milled processed, can suppress double faced adhesive tape and produce at the interface with roller to float to wait to reduce and be orientated spot.By using this abrasive cloth double faced adhesive to paste band, can provide can be corresponding to the roller winding abrasive sheet of large-scale mixing roll.
Description of drawings
Fig. 1 is the join explanatory view of method of a plurality of abrasive cloths of expression one example.
The sectional drawing that Fig. 2 constitutes with abrasive sheet for expression one routine roller winding of the present invention.
Fig. 3 is the organization chart of the velvet stuff of V-shape fine hair.
Fig. 4 is the organization chart of the velvet stuff of fastening pile.
Fig. 5 is the explanatory view of grinding test method among the expression embodiment.
Embodiment
It is the double faced adhesive tape that is used for coiling abrasive cloth on roller that abrasive cloth double faced adhesive of the present invention is pasted band, has the bond layer I that pastes on the roller in the one side of base material film, and another side has the bond layer II that pastes abrasive cloth.
This double faced adhesive tape is as described in the back, is preferred for being produced on adhering to 1 slice lapping cloth on the bond layer II at least, makes fine hair in face side, the roller winding abrasive sheet of integrated formation.This roller winding is wound on the roller across its bond layer I with abrasive sheet.At this moment, the radii fixus of the base fabric portion of abrasive cloth and the base material film of double faced adhesive tape is different, and periphery is poor in therefore causing, its result produces internal stress.This internal stress acts on the weak side of bonding force, if use common grinding double-sided belt, will become in the reason of floating with the interface generation of roller.
For double faced adhesive tape of the present invention, suppress to produce in order to absorb this internal stress and describedly float, use film with specific trait, promptly with the film of tensile stress below 3000MPa that stretched 1% o'clock as base material film.If described tensile stress surpasses 3000MPa, then base material film can't fully absorb internal stress, can't reach the object of the invention.From absorbing the internal stress aspect, the tensile stress that stretched 1% o'clock is preferably in 200~2600MPa scope.The tensile stress that described base material film stretched 1% o'clock is based on the value that JIS K 7127 measures.
Also have, base material film preferably uses base material film stretching 10% and the film of stress below 20N/15mm after stopping to stretch 1 minute.If above-mentioned stress surpasses 20N/15mm, then base material film can't fully cushion stress, can't reach the object of the invention.From relaxing the stress aspect, described stress is further preferably in 4~18N/15mm scope.With base material film stretch 10% and stop to stretch 1 minute after stress be the value of following mensuration.Promptly substrate sheet is cut into wide 15mm, long 150mm, obtains test film." the TENSIRON RTA-100 " that uses オ リ エ Application テ Star Network company to make, the chuck spacing is arranged on 100mm, with 200mm/min speed this test film that stretches, measures.
For the base material film of double faced adhesive tape of the present invention, so long as satisfy described characteristic, then its material is not done special qualification, can use various materials.For example preferably using polyolefin-based resins or soft PVC is resin etc.Do not do special qualification for polyolefin-based resins, can enumerate as the homopolymer of alpha-olefins such as ethene, propylene, 1-butylene, 3-methyl butene-1,3-methylpentene-1,4-methylpentene-1 or their multipolymer, perhaps with the multipolymer etc. that can carry out the unsaturated monomer of other copolymerization with them.Typical example can be enumerated polyethylene kind, propylene-ethylene block copolymer or unordered multipolymer, propylene-ethylene-soft polypropylene class, polybutene-1, poly 4-methylpene-1s etc. such as double olefin compound multipolymer such as high-density, middle density, new LDPE (film grade) or straight-chain low density polyethylene, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer.These may be used singly or in combination of two or more use.Wherein especially preferred new LDPE (film grade) and straight-chain low density polyethylene.
On the other hand, multipolymer (as ethylene-vinyl chloride copolymer, polyvinyl acetate-chloride copolymers, vinylchlorid-halogenated olefins multipolymer etc.) that soft PVC is polyvinyl chloride resin in the resin polyvinyl chloride that can enumerate in full equal polymerization degree about 800~2500, main body is vinylchlorid or main body are these polyvinyl chloride or vinyl chloride copolymer and mixtures other consistency resins etc.These polyvinyl chloride resins can use a kind of, also can make up two or more uses.
Soft PVC is that resin can be by cooperating 15~50 weight part degree softening agent to modulate to above-mentioned polyvinyl chloride resin 100 weight parts.
Above-mentioned softening agent can use as phthalic acid derivatives such as dinoctyl phthalate, di-2-ethylhexyl phthalate, diisononyl phthalate, Di Iso Decyl Phthalates; Isophthalic acid derivatives such as diisooctyl isophthalate; Hexanodioic acid derivatives such as Octyl adipate; Also have phosphoric acid trimethylbenzene phenolic ester, tricresyl phosphate dimethylbenzene phenolic ester, epoxidised soybean oil etc. in addition.
Thickness for base material film is not done special restriction, is generally 10~120 μ m, preferred 20~100 μ m.
Among the present invention, for this base material film, can be according to the expectation purpose, promptly, can implement physical property or chemical surface treatments such as oxidation style or concavo-convexization method in order to improve the adaptation with disposed thereon bond layer.Above-mentioned oxidation style can be enumerated as corona discharge method, chromic acid facture, spark facture, hot blast facture, ozone and uviolizing facture etc.Also have, concavo-convexization method can be enumerated as sandblasting method, solvent treatment method etc.These surface preparations can suitably be selected according to the kind of film, but consider the preferred Corona discharge Treatment method of using from aspects such as effect and operability.
For double faced adhesive tape of the present invention, paste bond layer I on the roller in the one side setting of base material film, at another side the bond layer II that pastes abrasive cloth is set simultaneously.Do not do special restriction for the caking agent that is used for described bond layer I and II, can grind with suitably selecting arbitrary substance the caking agent of double faced adhesive tape from be customarily used in the past.As using acrylic acid series caking agent, rubber is that caking agent, silicone-based caking agent, urethane adhesive and polyester are caking agent etc., and wherein general preferred acrylic acid series caking agent and rubber are caking agent.
It is at least a being selected from (methyl) Voncoat R 3310 that described acrylic acid series caking agent can use main component, contain the material of the multipolymer of the multipolymer of above (methyl) acrylate in two unit and (methyl) acrylate and other functional monomers.Should can enumerate as (methyl) butyl acrylate, (methyl) vinylformic acid pentyl ester, (methyl) Ethyl acrylate, (methyl) vinylformic acid heptyl ester, (methyl) Octyl acrylate, (methyl) vinylformic acid ester in the ninth of the ten Heavenly Stems, (methyl) decyl acrylate etc. by (methyl) acrylate.Also have, functional monomer can be enumerated as amide containing monomer, (methyl) vinylformic acid etc. such as hydroxyl monomers such as (methyl) Hydroxyethyl Acrylate, (methyl) vinylformic acid hydroxy propyl ester, (methyl) acrylamide, dimethyl (methyl) acrylamides and contain carboxylic acid monomer etc.
Described rubber is that can to use main component be at least a material that is selected from natural rubber, polyisoamylene rubber, polyisobutene, polybutadiene rubber, styrene-butadiene-styrene block copolymer, vinylbenzene-isopentene-styrene block copolymer to caking agent.
These caking agents can cooperate linking agent, bonding imparting agent, oxidation inhibitor, weighting agent etc. as required.
Remain on the roller in order to suppress caking agent when replacing abrasive cloth, the bonding force that preferably makes bond layer I pair roller is less than the bonding force of bond layer II to abrasive cloth.Regulating the method for bonding force can use, and uses the caking agent a little less than the cementability and bond layer II uses the method for the strong caking agent of cementability as bond layer I, makes bond layer I be thinner than the method for bond layer II, and the method etc. that makes up them.Here, can use during the weak caking agent of allotment cementability the high material of high material of molecular weight or degree of crosslinking as the resinous principle that constitutes caking agent.
General 10~70 μ m that select of the thickness of bond layer I among the present invention, preferred 20~50 μ m, general 30~80 μ m, preferred 40~70 μ m of selecting of the thickness of bond layer II.
Also have, can be provided with described bond layer I concavo-convex, residual air between this bond layer I and the roller when avoiding pasting on the roller.Should be concavo-convex by being provided with, during stickup air through the concavo-convex outside that flows to, thereby residual air between inhibition bond layer I and the roller.Concaveconvex shape then can be an arbitrary shape so long as can to suppress air when pasting residual.As enumerating striated, island, indefinite shape, reaching the combination of these shapes etc.
Double faced adhesive tape total thickness of the present invention is considered from the aspect such as inhomogeneous that reduces internal stress, products thickness, preferably below 200 μ m.
Double faced adhesive tape of the present invention is considered from the operability aspect, preferably covers the surface of bond layer I and II with peeling sheet.Thereby described each bond layer can be directly to be coated with on the base material film two sides bond layer is set, but preferably after coating adhesive is provided with bond layer on the peeling sheet, it is sticked to base material film come this bond layer of transfer printing, peeling sheet is then stayed method there.Also have, in this method, be provided with when concavo-convex at bond layer I, can be in the peeling sheet setting corresponding to this concavo-convex convex-concave portion.
Described peeling sheet can be enumerated as paper base materials such as glassine paper, overlay paper, good quality papers, the laminated paper of thermoplastic resin such as laminated polyethylene on these paper base materials, or on plastics films such as polyolefin films such as polyester films such as polyethylene terephthalate, polybutylene terephthalate, PEN, polypropylene or polyethylene the material of stripper such as coating silicone resin etc., do not do special qualification for this peeling sheet thickness, be generally 20~150 μ m degree.
This peeling sheet can to make it possess and can shear line perhaps be set from the size of bond layer extension in order to be stripped from easily when pasting roller or abrasive cloth, and is perhaps overlapping near the bond layer central part two peeling sheet.
The abrasive cloth that adheres to double faced adhesive tape bond layer II for the present invention is not done special qualification, can suitably select to use from the abrasive cloth of the milled processed that in the past was customarily used in liquid crystal indicator alignment films etc.The representative substances of this abrasive cloth velvet stuff of can giving an example.The fine hair of abrasive cloth uses the fiber in cellulose acetates such as cotton, artificial cotton, cellulosetri-acetate, koplon, day silk, nylon, polyester, the polyvinyl, the filling (warp thread and weft yarn) that the forms base fabric cellulose fibres such as cotton, artificial cotton that use more.
Fig. 3, the 4th is used for the representative organization chart of the velvet stuff of abrasive cloth.Symbol 31 is that weft yarn, 32 is that warp thread, 33 is fine hair.Fig. 3 is called so-called V fine hair, and fine hair 33 is pushed down by a weft yarn 31, so fine hair 33 easy runnings.Fig. 4 is called the fastening pile, is to clip by three weft yarns 31 to push down, and be the structure that fine hair 33 is difficult for running therefore.At arbitrary structures, fine hair 33 is all controlled by weft yarn 31.Velvet stuff as abrasive cloth is, the resin such as a side coating vinyl acetate between to for plastic system, acrylic acid series that does not expose fine hair 33 at base fabric fixes, but fine hair 33 is not to be completely fixed, especially when weft yarn 31 directions are cut off lining, the warp thread 32 of lining is cut off, and fine hair 33 is thrown off when the lining end easily.Therefore, warp thread 32, weft yarn 32 both sides or a side to the velvet stuff base fabric use thermoplastic synthetic fibers such as polyester, polypropylene, blade with heating when cutting off velvet stuff carries out the heat fusing cut-out, then fusion engages between the filling of Qie Duaning, perhaps the leading section of filling becomes spherical or deformation state such as flats, to prevent peeling off, coming off of fine hair 33.Also have, this moment, then fusion engaged better effects if if velvet stuff is woven into the fastening pile as shown in Figure 4.VELVET density is generally through 12~50 (root/cm), latitude 30~100 (scope of root/cm).Also have, base fabric thickness is generally 0.1~1.0mm scope, and the long thickness of fine hair that contains base fabric is common 1.5~3.5mm.
Then, roller winding abrasive sheet of the present invention is on the bond layer II of described double faced adhesive tape at least 1 slice lapping cloth to be adhered to into fine hair and make it integrated in face side.
This roller winding can be made according to method as described below of abrasive sheet.At first, be placed on the smooth tabular platform, make fine hair at downside cutting into to 1 of sizing or multi-disc abrasive cloth.Then the two-sided double faced adhesive tape that is stained with peeling sheet that cuts into to sizing is placed on another smooth tabular platform, make bond layer II in the outside, peel off the peeling sheet of bond layer II side, the bond layer II that exposes is pasted on the base fabric of abrasive cloth gently.Abrasive cloth and fully integratedization of double faced adhesive thin slice ground is forward pressurizeed with pressure roll along fine hair from a direction of fine hair side carry out driving fit.At this moment, if carry out after in advance double faced adhesive tape and tabular being heated to 50~70 ℃, then caking agent is dipped into the fabric fibre of the base fabric of abrasive cloth easily, and is bonding more certain.
Also have, when joining a plurality of abrasive cloth, preferably as shown in Figure 1, to be connected into each abrasive cloth 11,11 ' edge 12,12 ' is corresponding mutually, the joint continuity that strides across the formation of described butt joint cloth edge adheres to into bond layer II contact to double faced adhesive tape, with multi-disc abrasive cloth (being 2 slice lapping cloth among Fig. 1) being integral of joining.
At this moment, the joint of abrasive cloth is a linearity, and abrasive cloth to the angle (θ among Fig. 1) of grinding direction is, consider to suppress roller winding and peel off and fine hair is peeled off or come off from roller with the abrasive sheet end, and preferred 0 degree~45 degree, more preferably 0~30 spends.Also have the cloth edge of joint and the preferred 0.5~5mm in the gap at cloth edge (L among Fig. 1).Fine hair is arranged in and is parallel to warp thread shown in Fig. 3,4.The grinding direction of abrasive cloth and the warp thread of abrasive cloth are set for parallel usually, but also can misplace uneven (2 °~10 ° degree) a little.
Incorporate like this roller winding is controlled by the diameter and the length of used roller with the size of abrasive sheet.Roller is because use diameter 60~300mm degree, length 500~3000mm degree, so roller winding is of a size of length 480~2950mm degree, wide cut 180~950mm degree with abrasive sheet.Also have, adherent abrasive cloth quantity is generally 1~3, preferred 1~2.
The sectional drawing that Fig. 2 constitutes with abrasive sheet for expression one routine roller winding of the present invention.Roller winding with abrasive sheet 10 is, on the bond layer II 2b of the two-sided double faced adhesive tape 4 that is provided with bond layer I2a and bond layer II 2b of base material film 1, stick to the abrasive cloth 3 that has fine hair 3a on the base fabric 3b, and on bond layer I2a, adhere to peeling sheet 5.
For roller winding of the present invention is wound up on the roller with abrasive sheet, at first roller winding is placed to fine hair at downside with abrasive sheet, peel off the peeling sheet of bond layer I side, bond layer I is exposed.Then, place roller on bond layer I, by rotating this roller, I is wound up into abrasive sheet on the roller across bond layer.The roller of abrasive sheet of having reeled like this is installed on the device for grinding and processing, is used for the milled processed of the alignment films etc. of liquid crystal indicator.
The base material film of double faced adhesive tape of the present invention is, the tensile stress that stretched 1% o'clock is below 3000MPa, more preferably use base material film stretching 10% and the base material film of stress below 20N/15mm after stopping to stretch 1 minute, therefore, can sponge the internal stress that causes by interior periphery difference between abrasive cloth base fabric and the double faced adhesive tape base material film by enough this base material films, its result can suppress double faced adhesive tape and float with the interface of roller.Thereby, if use this device for grinding and processing that described alignment films is carried out milled processed, the alignment films of the orientation spot that then can be inhibited.
Also have, roller winding of the present invention is with in the abrasive sheet, and the velvet stuff that is used as abrasive cloth is to use the thermoplastic synthetic fiber as the filling that constitutes base fabric, and adopt the heat fusing cutting-off method to cut off abrasive cloth, like this, fusion engages between the filling of cut-out, and perhaps the leading section of filling becomes spherical or deformation state such as flats, peel off or come off to prevent fine hair, its result can further reduce the orientation flaw or orientation spot, also can be effectively corresponding for rectangular mixing roll.
Embodiment
Then, further describe the present invention, but the present invention is not limited to these examples according to embodiment.
Tensile stress during the stretching 1% of base material film and with base material film stretch 10% and stop to stretch 1 minute after stress be that the method that goes up record is to specifications measured.
Embodiment 1
(1) making of double faced adhesive tape
Base material film uses the polyethylene film (abbreviating PE50 as) by the thickness 50 μ m of weight ratio mixtures acquisition in 90: 10 of new LDPE (film grade) and straight chain shape new LDPE (film grade).The tensile stress that this PE50 stretched 1% o'clock is 380MPa, stretch 10% and stop to stretch 1 minute after stress be 6.4N/15mm.
Trade(brand)name オ リ バ イ Application BPS3841) and the dry bond layer I (roll side) that thickness 30 μ m are set (リ Application テ Star Network (strain) is made: (Japan イ Application キ makes (strain) and makes lift-off processing aspect coating acrylic acid series caking agent trade(brand)name SP-11BY): in the peeling sheet of thickness 90 μ m.Then, across this bond layer I this peeling sheet is sticked to the one side of described PE50.
Trade(brand)name オ リ バ イ Application BPS8170) and the dry bond layer II (cloth side) that thickness 50 μ m are set then, (リ Application テ Star Network (strain) is made: (Japan イ Application キ makes (strain) and makes lift-off processing aspect coating acrylic acid series caking agent trade(brand)name SP-8K): in the peeling sheet of thickness 65 μ m.Then, this peeling sheet is sticked to the another side of described PE50, make double faced adhesive tape with peeling sheet across this bond layer II.It is cut into wide 300mm, long 550mm, be used to make the roller winding abrasive sheet.
(2) the roller winding making of abrasive sheet
Peel off the peeling sheet of the bond layer II side of the double faced adhesive tape of in above-mentioned (1), making, the abrasive cloth of proterties as shown in table 1 (1) and (2) are cut into wide 263mm, long 480mm separately, make this bond layer II contact according to method noted earlier at that face of base fabric side, place double faced adhesive tape, and fixing gently.Then, counter-rotating is exerted pressure from the fine hair side, carries out driving fit, the roller winding abrasive sheet of being made into one.Cut away and remove unnecessary double faced adhesive tape.Also have, carry out after in the above-mentioned making double faced adhesive tape and tabular being heated to 55 ℃.
(3) estimate
The roller winding of making in above-mentioned (2) is placed to the abrasive cloth side down with abrasive sheet, peels off peeling sheet, expose bond layer I.Then, on this bond layer I, place the cylindric glass roller of long 500mm, diameter 84mm, towards the forward rotation roller of fine hair, the incorporate roller winding abrasive sheet of on roller, reeling.
Then, behind the coiling roller, placed 24 hours,, estimate adaptation according to following judgment criteria from the sticking state of cylindric glass inner side visual observations roller and double faced adhesive tape.
Judgment criteria
Zero: can't see according to range estimation and to float between roller and the double faced adhesive tape etc.
*: can see between roller and the double faced adhesive tape and floating according to range estimation.
Its result is illustrated in the table 2.
Embodiment 2
(1) making of double faced adhesive tape
In embodiment 1 (1), soft PVC film [リ Application テ Star Network (strain) manufacturing: trade(brand)name エ Application ピ ト ウ メ イ 80 except used thickness 80 μ m, contain softening agent (dinoctyl phthalate) 20 weight parts for 100 weight part polyvinyl chloride (PVC) RESINS] (abbreviating PVC80 as) in addition, all the other and embodiment 1 (1) identical enforcement.
This moment, the tensile stress that stretched 1% o'clock of PVC80 was 1340MPa, stretch 10% and stop to stretch 1 minute after stress be 15.9N/15mm.
(2) the roller winding making of abrasive sheet
Use the double faced adhesive tape of making in above-mentioned (1) and abrasive cloth (1) and (2) of proterties as shown in table 1, with embodiment 1 (2) identical making roller winding abrasive sheet.
(3) estimate
For the roller winding abrasive sheet of in above-mentioned (2), making, with embodiment 1 (3) the identical evaluation.It is the results are shown in table 2.
Comparative example 1
(1) making of double faced adhesive tape
In embodiment 1 (1), except the pet film of used thickness 25 μ m (eastern レ (strain) makes: trade(brand)name Le ミ ラ-25T-70) (abbreviates PET25 as), all the other and embodiment 1 (1) identical enforcement.
This moment, the tensile stress that stretched 1% o'clock of PET25 was 5330MPa, stretch 10% and stop to stretch 1 minute after stress be 26.4N/15mm.
(2) the roller winding making of abrasive sheet
Use the double faced adhesive tape of making in above-mentioned (1) and abrasive cloth (1) and (2) of proterties as shown in table 1, with embodiment 1 (2) identical making roller winding abrasive sheet.
(3) estimate
For the roller winding abrasive sheet of in above-mentioned (2), making, with embodiment 1 (3) the identical evaluation.It is the results are shown in table 2.
Table 1
Figure C20041008371200191
Table 2
Figure C20041008371200192
As can knowing from table 2, use PE50 as the roller winding of base material film with abrasive sheet (embodiment 1), and use PVC80 all can't see between roller and the double faced adhesive tape with abrasive sheet (embodiment 2) as the roller winding of base material film and float.
Test example 1
Use abrasive cloth (1) shown in the table 1, prepare the sample that 1 group of 2 heat fusing cuts into shape as shown in Figure 1 (a=750mm, b=650mm, c=407mm, θ=15 °) (below be called 15 ° of abrasive cloths of θ (1)), prepare the sample that 1 group of 2 heat fusing cuts into shape as shown in Figure 1 (a=940mm, b=460mm, c=407mm, θ=50 °) (below be called 50 ° of abrasive cloths of θ (1)) simultaneously.
(1) roller winding is reeled with the making and the pair of rollers of abrasive sheet
The double faced adhesive tape of making among the embodiment 1 (1) is cut into wide 450mm, long 1550mm, on smooth tabular platform, be fixed into bond layer II, peel off peeling sheet simultaneously, expose bond layer II last.
Then, on another smooth tabular platform, 1 group of 15 ° of abrasive cloth of 2 θ (1) are joined as shown in Figure 1, make the fine hair side and note not wrinkle or crooked down, and make the face of this bond layer II contact base fabric side place double faced adhesive tape, adhere to gently, counter-rotating is exerted pressure from the fine hair side then, carries out driving fit.Cut away and remove unnecessary double faced adhesive tape.The gap of 2 slice lapping cloth is 2mm.Like this, make roller winding with abrasive sheet (θ=15 °).
Also have, except substitute 15 ° of abrasive cloths of θ (1) with 50 ° of abrasive cloths of θ (1), all the other are identical with aforesaid method makes roller winding usefulness abrasive sheet (θ=50 °).
With the roller winding that obtains like this with each self reversal of abrasive sheet (θ=15 °) and roller winding usefulness abrasive sheet (θ=50 °), peel off peeling sheet, on bond layer I, place the aluminum mixing roll of external diameter 130mm, long 1500mm, towards the forward rotation of fine hair, the incorporate roller winding abrasive sheet of driving fit simultaneously.
(2) according to the evaluation of grinding test
Fig. 5 is the explanatory view of expression grinding test.
As shown in Figure 5, use to be wound with the mixing roll 21 of roller winding with abrasive sheet 22, milled processed approach d is the sheet glass 23 of 0.5mm.With rotating speed 1200rpm rotation 3 minutes, sight glass plate surface should be operated for 6 times repeatedly, carried out 18 minutes milled processed.Evaluation result after the milled processed is as follows.
The roller winding that uses 15 ° of abrasive cloths of θ (1) is during with abrasive sheet (θ=15 °), do not have obscission from the fine hair of joint, and is all right.The roller winding that uses 50 ° of abrasive cloths of θ (1) on the other hand is during with abrasive sheet (θ=50 °), though the fine hair from joint does not have obscission, but the roller winding of 50 ° of otch fore-ends with abrasive sheet from a roller flake-off part, a villus shedding part.

Claims (15)

1. an abrasive cloth double faced adhesive is pasted band, it is that one side at base material film has the bond layer I that pastes on the roller, another side has the abrasive cloth double faced adhesive of the bond layer II that pastes abrasive cloth and pastes band, it is characterized in that: the film of tensile stress below 3000MPa that use to stretch 1% o'clock be as base material film, and the tensile stress during described stretching 1% is based on the value that JIS K 7127 measures.
2. paste band as the abrasive cloth double faced adhesive of claim 1 record, it is characterized in that: the tensile stress that base material film stretched 1% o'clock is 200~2600MPa.
3. paste band as the abrasive cloth double faced adhesive of claim 1 record, it is characterized in that: base material film is a film of polyolefin resin.
4. paste band as the abrasive cloth double faced adhesive of claim 2 record, it is characterized in that: base material film is a film of polyolefin resin.
5. paste band as the abrasive cloth double faced adhesive of each record of claim 1~4, it is characterized in that: the test film that base material film is cut into wide 15mm, long 150mm, the chuck spacing is arranged on 100mm, stretch with the draw speed of 200mm/min, make thus this test film stretch 10% and stop to stretch 1 minute after stress below 20N/15mm.
6. roller winding abrasive sheet is characterized in that: paste at the abrasive cloth double faced adhesive of each record of claim 1~4 on the bond layer II of band and adhere to 1 slice lapping cloth at least, make fine hair become face side and carry out integrated.
7. a roller winding abrasive sheet is characterized in that: adhere to 1 slice lapping cloth at least on the bond layer II that the abrasive cloth double faced adhesive stickup of claim 5 record is with, make fine hair become face side and carry out integrated.
8. as the roller winding abrasive sheet of claim 6 record, it is characterized in that: the multi-disc abrasive cloth is corresponding mutually to being connected into the selvedge edge, stride across the joint continuity adhesion double faced adhesive tape that described butt joint cloth edge forms, the multi-disc abrasive cloth is joined.
9. as the roller winding abrasive sheet of claim 7 record, it is characterized in that: the multi-disc abrasive cloth is corresponding mutually to being connected into the selvedge edge, stride across the joint continuity adhesion double faced adhesive tape that described butt joint cloth edge forms, the multi-disc abrasive cloth is joined.
10. as the roller winding abrasive sheet of claim 8 record, it is characterized in that: the joint of abrasive cloth is a linearity, and abrasive cloth is 0 degree~45 degree to the angle of grinding direction.
11. as the roller winding abrasive sheet of claim 9 record, it is characterized in that: the joint of abrasive cloth is a linearity, and abrasive cloth is 0 degree~45 degree to the angle of grinding direction.
12. roller winding abrasive sheet as claim 10 record, it is characterized in that: abrasive cloth uses at base fabric with the woven velvet stuff of fastening pile pattern braiding fine hair, described fine hair is the fiber that is selected from cotton, artificial cotton, cellulose acetate, koplon, day silk, nylon, polyester and the polyvinyl, and constitutes the warp thread of filling of described base fabric and weft yarn both sides or a side and be made of the thermoplastic synthetic fiber.
13. roller winding abrasive sheet as claim 11 record, it is characterized in that: abrasive cloth uses at base fabric with the woven velvet stuff of fastening pile pattern braiding fine hair, described fine hair is the fiber that is selected from cotton, artificial cotton, cellulose acetate, koplon, day silk, nylon, polyester and the polyvinyl, and constitutes the warp thread of filling of described base fabric and weft yarn both sides or a side and be made of the thermoplastic synthetic fiber.
14. roller winding abrasive sheet as claim 12 record, it is characterized in that: the cloth edge of abrasive cloth is fused, become and constitute the filling that constitutes by the thermoplastic synthetic fiber of base fabric and the state of the mutual welding of other fillings at this edge, perhaps the state that is out of shape because of fusion of the thermoplastic synthetic fiber of filling.
15. roller winding abrasive sheet as claim 13 record, it is characterized in that: the cloth edge of abrasive cloth is fused, become and constitute the filling that constitutes by the thermoplastic synthetic fiber of base fabric and the state of the mutual welding of other fillings at this edge, perhaps the state that is out of shape because of fusion of the thermoplastic synthetic fiber of filling.
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