JP2005254354A - Profiling sheet material for supporting polishing material, polisher and polishing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a profiling sheet material for supporting polishing material, and a polisher made of it, which are free from a danger to the human body in profiling work and from risk of disaster due to fire, dispense with a special device such as a heater, and allow a polishing material support to be simply made. <P>SOLUTION: This profiling sheet material for supporting polishing material is formed by impregnating a soft base material with moisture curable resin reacting with moisture to be cured, and fixing the soft base material in an arbitrary shape as the polishing material support. For use, the soft base material is brought into close contact with a region having the same surface shape as the target surface shape, and held until the soft base material is cured by the action of the moisture curable resin to be fixed in the same surface shape as the target surface shape. Thus, the polishing material support for polishing easily an object surface to be polished to the target surface shape with good accuracy is safely and simply manufactured without a special device. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an abrasive-supporting mold sheet material for producing an abrasive support tool used for surface polishing of a target surface, particularly a curved target surface. The present invention also relates to an abrasive tool and an abrasive support tool having the mold sheet material. The present invention further relates to a polishing method using the mold sheet material.

  Conventionally, as a method of repairing damage (deformation) caused by external force on the surface of structures made of iron or hard plastic, such as automobiles, trains, vending machines, arts, etc. The putty is put on the damaged part, and after the putty is hardened, the extra putty is removed by polishing with an abrasive to restore the original surface shape. In this work, skilled techniques are required to restore the original shape with high accuracy. In particular, when the repair location has a complicated shape, or when the area of the repair location is large, even a skilled engineer often has difficulty.

  Therefore, as a technique that enables the polishing to be performed while accurately holding the polishing material in a shape that matches the shape before the damage when the extra putty is dropped with the polishing material, there is a technique described in Patent Document 1 below. Proposed.

In this proposal, a molten resin mass obtained by heating and melting polycaprolactone resin to a certain temperature in the range of 60 to 100 ° C. is pressed against another body part having the same surface shape as that before the damage. The contact portion of the resin mass is deformed so as to be in close contact with the surface shape of the vehicle body portion, and the resin mass is cooled and cured while maintaining the deformation, thereby providing a support surface that can adhere to the surface before damage. It is disclosed that a cured resin is used, and the cured resin is used as a sandpaper support, and the back surface of the sandpaper is pasted on the support surface of the support to obtain a polishing tool.
See Japanese Patent Application Laid-Open No. 10-249739

  However, the method uses a thermoplastic synthetic resin (polycaprolactone resin) to prepare a sandpaper support, and it is necessary to prepare a heat source at 60 to 100 ° C. in order to soften and melt the resin. There is a danger of burns due to the heat of the resin and fire and disasters due to fire. Also, in order to collect a wide range of molds, there is a problem that a large heat source is required to melt and soften a large amount of resin at once, and a special heating and melting apparatus is required. Furthermore, if the thermoplastic resin plate or lump for mold making is softened, the mold will not be elastic and the mold making operation becomes difficult. In addition, since the indoor temperature of the workplace is greatly influenced by the season and the outside air temperature, the curing time of the thermoplastic resin varies, and there is a problem that it is practically difficult to use.

  The present invention has been made in view of the above circumstances, and an attempt is made to provide a mold sheet material for producing an abrasive support that can be easily and accurately polished to a target shape of a surface to be polished. To do. In addition, the present invention has no danger of a human body or a fire-related disaster, does not require a special device such as a heating device, and can easily produce the abrasive material support tool. An object of the present invention is to provide a take-up sheet material and a polishing tool made therefrom.

  Another object of the present invention is to provide a polishing method capable of easily and accurately polishing a target surface shape to a surface to be polished.

  In order to solve the above-mentioned problems, an abrasive-supporting mold sheet material according to the present invention is a flexible base material, impregnated in the flexible base material, reacts with moisture, and cures to form the flexible base material. And a moisture curable resin that is fixed in an arbitrary shape as an abrasive material support (claim 1).

  In use, the mold support sheet material for supporting an abrasive is adhered to a portion having the same surface shape as a target surface shape, and the flexible substrate is cured by the action of the moisture curable resin, Hold until fixed to the same surface shape as the target surface shape. As a result, it is possible to produce an abrasive support that can easily and accurately polish the surface shape targeted for the surface to be polished.

  According to the present invention, since it is not necessary to use a high temperature in the production of the abrasive support, there is no danger to the human body or disaster due to fire. Therefore, it is possible to produce the abrasive support with peace of mind even in places where there is a highly flammable solvent such as an automobile repair shop. Moreover, since the flexible base material can be fixed in an arbitrary shape as long as it has moisture, no special preparation or apparatus is required, and the abrasive support can be easily produced anywhere. Furthermore, since the moisture curable resin is impregnated in the base material, it is easy to handle, and a flexible base material is used as the base material. Therefore, even a complicated shape can be easily and accurately molded. be able to.

  As a preferred embodiment, as the moisture curable resin, the flexible base material is fixed in a shape that can be used as an abrasive support in a short time, specifically, 1 to 30 minutes. Can be used (claim 2). In this way, the mold taking time is shortened and the working efficiency is improved.

  In addition, as the moisture curable resin, a urethane prepolymer resin composed of a polyisocyanate and a polyol can also be used (Claim 3).

  As another embodiment of the present invention, a flexible base material is impregnated into the flexible base material, activated by light, and cured to fix the flexible base material in an arbitrary shape as an abrasive support. It is also possible to make a mold support sheet material for supporting an abrasive material comprising a photocurable resin.

  As the photocurable resin, unsaturated polyester resin, vinyl ester resin, epoxy resin, and the like can be used, and those that activate at 350 to 780 nm as a wavelength of light to cause a polymerization reaction, particularly visible light having a wavelength of 380 to 780 nm. Or what superpose | polymerizes by irradiation of near-infrared light is especially preferable.

  Also in this case, in use, the flexible substrate is brought into close contact with a portion having the same surface shape as the target surface shape, and the flexible substrate is cured by the action of the photocurable resin. Hold until fixed to the same surface shape as the target surface shape. As a result, an abrasive material support that can easily and accurately polish the surface shape targeted for the polishing target surface can be produced safely and easily without requiring a special device.

  In the abrasive-supporting mold sheet material, as the base material, a woven fabric, a knitted fabric, a nonwoven fabric or a foamed material is used as a flexible material which can be freely adapted to any surface shape of the molding target surface. (Claim 5). If a woven fabric is used, a high-strength mold sheet material can be obtained, and if a knitted fabric is used, a mold sheet sheet having good deformability can be obtained. When a non-woven fabric or a foam is used, the deformability can be appropriately obtained and the thickness can be set freely, so that a highly versatile mold sheet material can be obtained.

  As the material of the base material, various materials can be used as long as they are non-reactive materials with moisture curable resin, but in particular, when glass fiber is used, rigidity strength is high and economic efficiency is also improved. (Claim 6).

  The polishing tool according to the present invention includes the above-mentioned mold support sheet material for supporting an abrasive material and an abrasive material supported by the mold sheet material (Claim 7). The abrasive may be obtained by attaching an abrasive cloth having good flexibility to the base material having a fixed shape by a method such as sticking, or abrasive particles in advance on the base material itself. It may be a material to which is attached.

  An abrasive material support according to the present invention comprises the above-mentioned mold support sheet material for supporting an abrasive material, and a grip attached to the mold material sheet (Claim 8). In this way, when polishing is performed using the abrasive material support tool, the polishing operation can be performed with the grip, which facilitates the polishing operation, which is preferable.

  The polishing method according to the present invention molds a surface shape identical to a target surface shape by a mold sheet material obtained by impregnating a moisture-curable resin into a flexible substrate, and after curing the mold sheet material Polishing is performed using the cured mold sheet material as an abrasive support (claim 9).

  The polishing method according to another embodiment of the present invention is to mold a surface shape that is the same as a target surface shape by using a mold sheet material obtained by impregnating a flexible base material with a photocurable resin. After the taking sheet material is cured, polishing is performed using the cured mold sheet material as an abrasive support (claim 10).

  The mold support sheet material for supporting an abrasive according to the present invention can be implemented in the following manner.

  First, as the flexible substrate, a woven fabric, a knitted fabric, a nonwoven fabric, or a foam can be used. The woven fabric is suitable for producing a mold sheet material having a thin and strong strength, and the knitting is suitable for producing a mold sheet material having good deformability. If a non-woven fabric or a foam is used, the deformability can be obtained moderately and the thickness can be set freely, which is suitable for producing a highly versatile mold sheet material.

  A curable resin and a non-reactive material are used as the material of the substrate. More preferably, a material having a low water content is preferable. For example, natural fibers and synthetic fibers can be used as materials for woven fabrics, knitted fabrics and non-woven fabrics. Among them, fibers with high elastic modulus (high tensile strength) are preferable. For example, glass fibers, carbon fibers, and metal fibers are used. it can. Glass fiber is suitable because it has not only high rigidity but also economy. When it is desired to increase the flexibility as the base material, polyester fiber, polyamide fiber, polypropylene fiber, cotton and the like can also be used. Examples of the foam material include open cell foam urethane.

  Next, as the moisture curable resin impregnated in the flexible base material, for example, urethane resin, silicone resin or the like can be used.

  As the urethane resin, a urethane prepolymer comprising a polyisocyanate and a polyol is preferable. Specifically, it is a prepolymer having an isocyanate group at the terminal, obtained by a reaction between a polyol and a polyisocyanate.

  Examples of the polyol include low molecular polyols such as polyethylene glycol, polypropylene glycol and polyglycerin, polyether polyols obtained by adding an alkylene oxide such as ethylene oxide and propylene oxide to polyphenols, low molecular polyols, adipic acid and phthalic acid. Polyestermethylenes obtained by dehydration condensation of dicarboxylic acids such as polytetramethylene glycols obtained by ring-opening polymerization of lactones such as γ-butyllactone and εcapracton, and polymers of diene compounds such as butadiene and isoprene. A polydiene polyol having a hydrogen atom or a mixture thereof can be used.

  Polyols having an average molecular weight of about 200 to 4000, preferably about 400 to 2000, may be used alone or in combination. When the molecular weight is increased, it becomes rich in elasticity, and when the molecular weight is decreased, it becomes hard and brittle.

  A known polyisocyanate can be used as the polyisocyanate. For example, 2,4′-diphenylmethane diisocyanate, 4,4′-diphenylmethane diisocyanate, toluene diisocyanate, 1,5-naphthalene diisocyanate, tolidine diisocyanate, hexamethylene diisocyanate, isophorazine diisocyanate, p-phenylene diisocyanate, transcyclohexane-1, 4-diisocyanate, xylene diisocyanate, hydrogenated xylene diisocyanate, lysine diisocyanate, triphenylmethane triisocyanate, lysine ester triisocyanate, 1,3,6-hexamethylene triisocyanate, polymethylene polyphenylene polyisocyanate, and carbodiimide modified or isocyanate Examples include nurate-modified polyisocyanate. These polyisocyanates can be used alone or in appropriate combination. Of these, aromatic polyisocyanates such as 2,4'-diphenylmethane diisocyanate, 4,4'-diphenylmethane diisocyanate, p-phenylene diisocyanate, polymethylene polyphenylene polyisocyanate, and carbodiimide-modified polyisocyanates are preferable.

  The mixing ratio of the polyol and the polyisocyanate is usually about 1.2 to 8 equivalents, preferably 2.0 to 5 equivalents of polyisocyanate with respect to 1 equivalent of polyol. For both reactions, a known urethane prepolymer synthesis technique can be used. The normal reaction temperature can be achieved by stirring at 40 to 100 ° C., preferably 50 to 80 ° C. The viscosity of the synthesized urethane prepolymer is usually 10 to 100 Pa · s, preferably 15 to 50 Pa · s at normal temperature.

  Furthermore, the urethane prepolymer has a catalyst, a stabilizer, an antifoaming agent, an antioxidant, a coloring, taking into consideration the curing time, storage stability, acceleration of defoaming during curing, finished color, storage stability, etc. An agent, a thixotropic agent, a filler and the like can be appropriately mixed.

  The catalyst has a function of adjusting the rate at which the urethane prepolymer reacts with water, and the urethane prepolymer is cured during the time required to securely adhere the mold sheet material to the mold target surface. It has flexibility and adjusts the time from the start of the reaction to the curing so that it can be quickly cured in the state along the surface shape of the surface to be molded after being closely attached to the surface to be molded. It is.

  Examples of the catalyst include those having excellent storage stability, such as bis (N, N-dimethylaminoethyl) ether, bis (4-morpholinoethyl) ether, bis (4- (2,6- (dimethylmorpholino) ethyl). ) Ether, etc. These catalysts can be used alone or in combination of two or more, and the amount of the catalyst used is usually 0.05 to 10% by weight, preferably 0, based on the urethane prepolymer. .1 to 5% by weight.

  The stabilizer has a function of suppressing self-curing of the urethane prepolymer. The urethane prepolymer is affected by moisture other than water, oxygen and the like, and has a property of causing a self-curing reaction and curing. Therefore, the stabilizer suppresses the self-curing reaction of the urethane prepolymer, and enhances the storage stability from when the mold sheet material is manufactured until it is used on the polishing work site.

  Examples of the stabilizer include acid chlorides such as benzoyl chloride, and sulfonic acids such as methanesulfonic acid. These stabilizers can be used alone or in admixture of two or more. Although the usage-amount of a stabilizer needs to be adjusted with the quantity of a catalyst, it is 0.005-1 weight% normally with respect to a urethane prepolymer. If the amount is too small, the stability effect cannot be obtained, and if it is too large, the activity of the catalyst is lowered.

  The antifoaming agent is used to increase the resin strength so as not to leave carbon dioxide gas generated by the reaction of the urethane prepolymer with water in the resin. As the antifoaming agent, it is preferable to use a commonly used silicone-based agent in an amount of about 0.01 to 2% by weight.

  Examples of the antioxidant include hindered phenols and phosphorus compounds.

  As the colorant (pigment, dye), it is preferable to use a legal pigment having a low risk of dermatitis.

  The thixotropic agent prevents the moisture curable resin from being biased in the flexible substrate during storage of the mold sheet material. Specifically, the thixotropic agent is silica, titanium oxide, aromatic carboxylic acid. Acid esters and the like can be used.

  In producing the mold sheet material, the moisture-curable resin is impregnated with the flexible substrate using, for example, a roll coater in a low-humidity environment where the moisture-curable resin is not cured. . The mold sheet material is stored in a moisture-impermeable container after production.

  In addition, it can replace with the said moisture curable resin, and the mold-sheet sheet | seat material for abrasive | polishing material supports which show | plays the same effect as the above can also be produced by impregnating the said base material with a photocurable resin. In this case, unsaturated polyester resin, vinyl ester resin, or the like can be used as the photocurable resin.

  The unsaturated polyester resin may be produced by a known method, and as a raw material, an unsaturated polybasic acid having an active unsaturated bond such as maleic anhydride or maleic acid or an anhydride thereof is used as an acid component. Ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, 1,2-butanediol, 1,4-butanediol, 1,5-butanediol, 1,6-butanediol, ethylene oxide adducts of bisphenol A, etc. It is obtained by dehydration polycondensation using a polyhydric alcohol as an alcohol component.

  The vinyl ester resin may be produced by a known method, and is a resin obtained by reacting an epoxy resin with an unsaturated monobasic acrylic acid or methacrylic acid, or a saturated carboxylic acid, a saturated carboxylic acid and a polyvalent resin. There is a resin obtained by reacting an epoxy compound having an α, β-unsaturated carboxylic acid ester group with a saturated polyester or unsaturated polyester having a terminal carboxy group obtained from alcohol. These photocurable resins may contain a low-molecular unsaturated compound such as acrylic ester or styrene.

  When producing a mold sheet material using these photocurable resins, for example, a roll coater is used for the flexible base material in a non-light environment where the photocurable resin is not cured. And impregnating the photocurable resin. The mold sheet material is stored in a light-shielding container after production.

  Next, although the specific example of preparation of the shaping sheet material which concerns on one embodiment of this invention is described, this invention is not limited to this.

  PPG-2000 (manufactured by Sanyo Kasei Kogyo Co., Ltd., trade name, propylene ether glycol, hydroxyl value 56 mg-KOH / g) after dehydration under reduced pressure while heating, isocyanate 125M (trade name, manufactured by Mitsubishi Kasei Dow Co., Ltd.) After adding 321 g of 4,4′-diphenylmethane diisocyanate) and stirring to react, 20 g of bis (dimethylmorpholinoethyl) ether and 0.6 g of methanesulfonic acid were added at 50 ° C., and further stirred and mixed to obtain a urethane prepolymer ( A) was obtained. The blend had a viscosity of 6 Pa · s at 20 ° C. and a curing time of 8 minutes.

As a base material, glass fiber (E glass fiber thickness ECG75 1/0 1.0Z) is knitted to a 15 cm width by raschel knitting to a finished density of 5.4 pieces / cm and weft 6.0 pieces / cm. Used tape. This product obtained 15-30% of elongation in the vertical direction by finishing, and also obtained elongation in the weft direction. The basis weight was 290 g / m ² .

  Under a low humidity environment, 200 g per square meter of the urethane prepolymer (A) was applied to the substrate with a two roll coater to obtain a mold sheet material. The prepared mold sheet material was rolled up in 1 m units and sealed in a moisture-impermeable container.

  In using the abrasive support mold sheet, the abrasive support mold sheet is brought into close contact with a portion having the same surface shape as the target surface shape, and the flexible substrate It holds until it hardens | cures by the effect | action of curable resin or the said photocurable resin, and is fixed to the same surface shape as the said target surface shape. As a result, it is possible to produce an abrasive support that can easily and accurately polish the surface shape targeted for the surface to be polished.

  The inventors of the present invention describe a sand paper support (hereinafter referred to as “conventional example”) made of polycaprolactone resin described in Patent Document 1, and moisture-curing according to an embodiment of the present invention. A comparison of the initial curability of an abrasive-supporting mold sheet material (hereinafter referred to as “this example”) obtained by impregnating a flexible base material with a polyurethane resin as a resin was performed.

  As a conventional sandpaper support, a polycaprolactone resin (width 10 cm, length 10 cm) having a thickness of 3 mm was used, which was immersed in a hot water bath at 70 ° C. to be completely softened. The time required for softening was 90 seconds.

On the other hand, the mold support sheet material for supporting an abrasive material of this example was obtained by impregnating a glass knit (warp yarn: 5.4 yarns / cm, weft yarn: 6.0 yarns / cm, basis weight: 265 g / m ² ) with a polyurethane resin. Three layers having a width of 10 cm and a length of 10 cm were laminated and immersed in water at 20 ° C. for 5 seconds.

The three-point bending stress was measured over time from the state where each could be shaped. At that time, a 5R indenter was used, and the distance between branches was 50 mm and the crosshead moving speed was 100 mm / min. The measurement was performed in an environment of 23 ° C. and 65% RH. The results were as shown in Table 1 below.

  From Table 1, it can be seen that the present example exhibits extremely good curability in a short time compared to the conventional example. For example, according to the present embodiment, the rigidity that can be taken is reached by waiting for about 5 minutes until it hardens, whereas according to the conventional example, the time to reach the rigidity that can be taken is doubled. Even after 10 minutes, the curability in the case of this example after 5 minutes is not reached. Moreover, in the case of this comparative experiment, the pretreatment time associated with the molding is 5 seconds in the water of 20 ° C. in the present example, while the conventional mixing is performed in the conventional example. Along with the complexity of preparing hot water of 70 ° C. that cannot be obtained with a stopper, the softening time of the resin requires 90 seconds. Therefore, when this pretreatment time is also taken into consideration, the temporal advantage until the completion of the mold making of the present embodiment is further increased.

  Furthermore, in the case of the conventional example, increasing the thickness in order to improve the curability results in a further increase in the time required for softening. By increasing the thickness, the rigidity as an abrasive material support can be easily improved, and the immersion time in water in that case is very short.

  Next, with reference to the attached drawings, a method for producing an abrasive material support using an abrasive material support molding sheet material according to an embodiment of the present invention and a polishing method using the abrasive material support tool will be described. To do.

  FIG. 1 is a process diagram of a polishing method according to an embodiment of the present invention.

  The polishing method according to the present invention molds a surface shape S that is the same as the target surface shape after polishing in the mold support sheet material 1 for supporting an abrasive according to an embodiment of the present invention, and the mold sheet After the material 1 is cured, polishing is performed using the cured mold sheet material 1a as an abrasive support. In the present embodiment, the present invention will be described by taking as an example polishing of a putty surface that is performed when a deformed portion (dented damaged portion) generated on a vehicle body surface B of an automobile is repaired using the putty P. That is, the polishing of the putty P performed to obtain the same surface shape as the body surface B before deformation after the putty P applied to the deformed portion is dried.

  Specifically, the polishing method according to the present embodiment shown in FIG. 1 includes a guard tape application process [FIG. 1 (a)] → moulding process [FIG. 1 (b)] → grip and abrasive cloth removal. The deposition process [FIG. 1 (c)] → putty polishing process [FIG. 1 (d)] is performed in this order. Hereinafter, each process will be described.

  As shown in FIG. 1A, the guard tape attaching step is performed on the surface shape after polishing, that is, on another vehicle body portion (surface to be molded) having the same surface shape S as the vehicle body surface B before deformation. This is a step of applying the guard tape 2. The purpose of affixing the guard tape 2 is mainly to surely protect the surface to be molded when performing the molding operation with the molding sheet material 1. Here, the “other vehicle body portion having the same surface shape S as the vehicle body surface B before deformation” may be another same surface shape portion in the vehicle body to be repaired, or other than the same type as the vehicle body to be repaired. The same surface shape portion of the vehicle body may be used.

  Since the guard tape 2 is peeled off after the mold is taken, it is desirable to employ a tape that is easy to peel off from the surface to be molded and does not leave an adhesive on the surface to be molded after peeling.

  In the molding process, as shown in FIG. 1 (b), the molding sheet material 1 is brought into close contact with the surface of the guard tape 2, so that the same surface shape S as the vehicle body surface B before deformation is obtained. This is a step of applying to the sheet material 1. The mold sheet 1 is impregnated with a flexible base material, moisture which is impregnated into the flexible base material, reacts with moisture, cures, and fixes the flexible base material to an arbitrary shape as an abrasive support. And a curable resin. Therefore, the required shape S can be easily and surely molded simply by allowing the mold sheet material 1 to be in close contact with the surface of the guard tape 2 after being immersed in water and waiting for a predetermined time until it is cured. However, if the mold sheet material 1 that can be sufficiently cured with moisture in the air is used, the mold can be taken without being wetted with water.

  If the base material of the mold sheet material 1 is thin, such as a woven fabric, a knitted fabric or a non-woven fabric, it is easy to manufacture when impregnated with the moisture curable resin. Sometimes it is weaker in strength. In this case, a plurality of the mold sheet materials 1 can be used in an overlapping manner, whereby the cured mold sheet material 1a can have the necessary strength as an abrasive support. When the base material which can be made comparatively thick like a nonwoven fabric or a foam is used as the said base material, it is advantageous at the point which can fully provide intensity | strength.

  When the mold sheet material 1 is cured, it is peeled off from the guard tape 2. In the peeled state, the required shape is given to the first surface 3 of the cured mold sheet material 1a as shown in FIG. 1 (c).

  Next, the attaching process of the grip and abrasive cloth will be described. In this step, as shown in FIG. 1 (c), a polishing cloth, such as sandpaper, which is thin and has good flexibility on the molding surface (the first surface) 3 of the cured molding sheet 1a. 4 is a process of attaching the back surface 4 (surface opposite to the abrasive material surface 4 b) 4 a and attaching the grip 6 to the second surface 5 opposite to the mold-taking surface 3. The method of attaching the abrasive cloth paper 4 and the grip 6 to the cured mold sheet 1a may be, for example, a method using a double-sided tape, an adhesion using an adhesive, or a surface fastener. It may be an attachment using.

  The mold sheet 1 or the cured mold sheet 1a and the grip 6 constitute an abrasive support 7 according to the present embodiment, and further include the abrasive cloth paper 4 as an abrasive. Thus, the polishing tool 8 according to the present embodiment is configured.

  Due to the attachment to the cured mold sheet 1a, the abrasive surface 4b of the abrasive cloth paper 4 is identical to the mold surface 3 following the mold surface 3 of the cured mold sheet 1a. The surface shape S will be exhibited. In addition, the grip 6 is a part that an operator holds by hand when polishing using the cured mold sheet 1a as the abrasive support 7. For this reason, it becomes easy to perform a polishing operation. In the example of FIG. 1, the grip 6 is formed in a rectangular parallelepiped shape, but is not limited to this, and the attachment surface 9 to the second surface 5 of the cured mold taking sheet 1 a and a surface that is easy to hold. If it has a shape, the specific shape of the said grip 6 is not ask | required.

  If the grip 6 is attached to the hardened mold taking sheet 1a by means of a pair of surface fasteners 10a and 10b which are surface-joined to each other, the grip 6 can be attached easily and quickly. It is preferable.

  In addition, if the abrasive particles are attached in advance as an abrasive to the mold sheet 1 itself, the process of attaching the abrasive cloth paper 4 is not necessary.

  In the putty polishing step, as shown in FIG. 1 (d), the surface of the putty P that has been applied in advance to a deformed portion of the body surface B to be repaired and dried and cured is attached to the hardened polishing sheet 1a. This is a step of polishing with the polishing cloth 4. Specifically, the abrasive tool 8 is slid back and forth along the body surface B in a state where the grip 6 is gripped and the abrasive surface 4b of the abrasive cloth 4 is in close contact with the surface of the putty P. Let Then, when the surface of the putty P is polished until there is no extra swell of the putty P and the entire abrasive surface 4b of the polishing cloth 4 is in close contact with the vehicle body surface B, the polishing operation is completed. It becomes. Since the abrasive surface 4b of the abrasive cloth 4 has the same surface shape as the vehicle body surface S before being deformed, the surface of the putty P can be treated as a vehicle body before it is damaged, even if it is not an expert. It can be easily polished into the same shape.

  The scope of application of the present invention is not limited to the polishing of the car body surface of automobiles, such as polishing of putty surfaces applied to damaged parts of vending machines, polishing of bathtub surfaces, polishing of wooden furniture surfaces, etc. Needless to say, the present invention can be applied to surface polishing of all objects. Further, it is not limited to polishing the putty surface. In any case, with the mold sheet material 1, a surface shape S that is the same as the surface shape after polishing (target surface shape) is molded, and after the mold sheet material 1 is cured, the mold is cured. By polishing using the mold sheet 1a as an abrasive support, the surface to be polished can be easily and reliably polished to the target surface shape.

  In addition, in the case of performing mold making work with a mold support sheet material for an abrasive material support, in which a flexible base material is impregnated with a light curable resin instead of the moisture curable resin, the light curing is performed at the time of mold removal. Wait for a predetermined time until the functional resin is activated by light and cured. For the other points, the abrasive material support tool and the polishing tool are produced in the same manner as in the case of the mold sheet material using the moisture curable resin, and the polishing method similar to the above is performed using the same. be able to.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process diagram of a method for producing an abrasive material support tool from an abrasive support mold sheet according to an embodiment of the present invention, and a polishing method using the abrasive material support material, wherein FIG. Tape attaching step, (b) shows a mold taking step, (c) shows a grip and polishing cloth attaching step, and (d) shows a putty polishing step.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Molding sheet 1a Cured molding sheet 4 Abrasive cloth 6 Grip 7 Abrasive support 10a, 10b Surface fastener S Surface shape same as surface shape after grinding

Claims (10)

  A flexible base material, and a moisture curable resin impregnated in the flexible base material, which reacts with moisture and cures to fix the flexible base material in an arbitrary shape as an abrasive support. A mold sheet material for supporting an abrasive.   2. The mold support sheet material for supporting an abrasive material according to claim 1, wherein the moisture curable resin fixes the shape of the flexible substrate to a strength that can be used as an abrasive material support tool in 1 to 30 minutes. .   The mold support sheet material for abrasive | polishing material support of Claim 1 or 2 whose said moisture curable resin is a urethane prepolymer resin which consists of polyisocyanate and a polyol.   A flexible base material; and a photocurable resin impregnated in the flexible base material, activated with light, and cured to fix the flexible base material in an arbitrary shape as an abrasive support. A mold sheet material for supporting an abrasive.   The mold support sheet material for abrasive | polishing material support of Claim 1, 2, 3 or 4 whose said base material is a woven fabric, a knitted fabric, a nonwoven fabric, or a foam.   The mold support sheet for supporting an abrasive material according to any one of claims 1 to 5, wherein the substrate is made of glass fiber.   A polishing tool comprising: the abrasive-supporting mold sheet material according to any one of claims 1 to 6; and an abrasive material supported by the mold sheet material.   An abrasive support, comprising: the mold support sheet material for supporting an abrasive material according to any one of claims 1 to 6; and a grip attached to the mold sheet material.   A molding sheet material obtained by impregnating a moisture-curing resin with a flexible substrate, molds the same surface shape as the target surface shape, and after the molding sheet material is cured, the cured molding sheet material A polishing method characterized in that polishing is performed using as a polishing material support.   A molding sheet material obtained by impregnating a flexible base material with a photocurable resin is molded with the same surface shape as the target surface shape, and after the molding sheet material is cured, the cured molding sheet material A polishing method characterized in that polishing is performed using as a polishing material support.

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