JP2021025639A - Roller and manufacturing method therefor - Google Patents

Abstract

To provide a roller capable of facilitating work required for adhesion of an elastic body and a shaft, having a short adhesion time, and having excellent adhesiveness of the elastic body and the shaft, and a manufacturing method therefor.SOLUTION: A roller 10 comprises an elastic body 11 and a shaft 21 inserted through the elastic body 11, wherein the elastic body 11 is adhered to the outer surface of the shaft 21 by curing an adhesive 25 provided on the outer surface of the shaft 21 covered with the elastic body 11. The elastic body 11 is made of a material that allows ultraviolet rays to pass through. The adhesive 25 is made of an ultraviolet curable resin, and is configured to be cured by ultraviolet rays transmitted through the elastic body 11.SELECTED DRAWING: Figure 2

Description

The present invention relates to a roller in which a shaft is inserted through an elastic body and a method for manufacturing the same.

The roller in which the shaft is inserted through the elastic body is, for example, a cleaning roller that comes into contact with a charging roller of an electrophotographic apparatus to clean the surface of the charging roller, a toner supply roller that supplies toner to an image carrier, or a paper feeder. Used for rollers, etc.

As a conventional roller, the hot melt adhesive is heated and melted and applied to the outer surface of the shaft, the cooled shaft is inserted into the elastic body, and then the hot melt adhesive is heat-cured to apply the elastic body to the outer surface of the shaft. Some are glued together.

Further, as an example of using a hot melt adhesive, a metal core metal coated with the hot melt adhesive is inserted into an elastic body, and the metal core metal is heated by a high frequency induction heating means to obtain a hot melt adhesive. There is a method of hot-melting and adhering a metal core metal and an elastic body (Patent Document 1).

In addition, those that use a moisture-curable adhesive as the adhesive to be applied to the outer surface of the shaft, those that use an instant adhesive, those that use an emulsion adhesive, those that use a solvent type adhesive, etc. There is.

Japanese Unexamined Patent Publication No. 2003-140476

However, the method of heating and melting the hot melt adhesive and applying it to the shaft requires a lot of work steps from the process of applying the hot melt adhesive to the outer surface of the shaft to the bonding process after inserting the shaft into the elastic body. Moreover, since it takes a long time to melt and cool the hot melt adhesive, there is a problem that the manufacturing time is long.

Further, the method of using the high frequency induction heating means for heating and melting the hot melt adhesive can shorten the heating time of the hot melt adhesive, but cannot shorten the time required for cooling, so that the manufacturing time is still long. There is.

On the other hand, the method using a moisture-curable adhesive may require several days to cure the moisture-curable adhesive.
Further, in the method using the instant adhesive, since the instant adhesive applied to the outer surface of the shaft cures quickly, the time required to insert the shaft into the elastic body is too short, and there is a problem of workability.
Further, in the method using an emulsion adhesive, after applying the emulsion adhesive to the outer surface of the shaft, it takes a long time to volatilize the water contained in the emulsion adhesive.
In addition, the method using a solvent-type adhesive may cause a problem of environmental pollution by the solvent and may cause the solvent to permeate into the elastic body and cause deterioration of physical properties.

The present invention has been made in view of the above points, and the roller can simplify the work required for bonding the elastic body and the shaft, have a short bonding time, and have good adhesiveness between the elastic body and the shaft. The purpose is to provide the manufacturing method.

The invention of claim 1 comprises an elastic body and a shaft inserted through the elastic body, and the elastic body is formed of the shaft by curing an adhesive provided on an outer surface of the shaft covered with the elastic body. In the roller bonded to the outer surface, the elastic body is made of a material that transmits ultraviolet rays, the adhesive is made of an ultraviolet curable resin, and is cured by the ultraviolet rays transmitted through the elastic body.

The invention of claim 2 is characterized in that, in claim 1, the thickness of the elastic body is 0.1 to 6 mm.

The third aspect of the present invention is a method for manufacturing a roller in which a shaft is inserted through an elastic body. The elastic body is made of a material that allows ultraviolet rays to pass through, and an adhesive made of an ultraviolet curable resin is applied to the outer surface of the shaft. The agent application step, the shaft insertion step of inserting the adhesive-coated shaft into the elastic body, and the shaft covered with the elastic body by the ultraviolet rays transmitted through the elastic body by irradiating the elastic body with ultraviolet rays. It is characterized by including an ultraviolet irradiation / adhesive curing step of curing the adhesive on the outer surface of the shaft, and adhering the elastic body to the outer surface of the shaft by curing the adhesive with the ultraviolet rays.

According to the roller of the present invention, the adhesive provided on the outer surface of the shaft covered with the elastic body is made of an ultraviolet curable resin, and the elastic body is made of a material through which ultraviolet rays are transmitted. The adhesive can be cured by irradiating ultraviolet rays from the outside, eliminating the need for heat-melting work of thermosetting resin and subsequent cooling-curing work, which are required when using thermosetting resin. The time required for heating and melting and cooling can also be eliminated. Further, unlike the moisture-curable adhesive, it does not take a long time to cure, and the adhesiveness between the elastic body and the shaft is also good. Further, there is no problem of environmental pollution as in the case of solvent-type adhesives, and no problem of the solvent permeating into the elastic body.

According to the method for manufacturing a roller of the present invention, the elastic body is made of a material that allows ultraviolet rays to pass through, and an adhesive application step of applying an adhesive made of an ultraviolet curable resin to the outer surface of the shaft and an adhesive-applied shaft are elastic. Performing a shaft insertion step of inserting into the body and an ultraviolet irradiation / adhesive curing step of irradiating the elastic body with ultraviolet rays and curing the adhesive on the outer surface of the shaft covered with the elastic body by the ultraviolet rays transmitted through the elastic body. As a result, the elastic body can be adhered to the outer surface of the shaft, so that the heat-melting work of the thermosetting resin and the subsequent cooling-curing work, which are required when using the thermosetting resin, are not required. The time required for heating and melting and cooling can be eliminated. In addition, unlike the moisture-curable adhesive, it does not take a long time to cure, and the adhesiveness between the elastic body and the shaft can be improved. Further, there is no problem of environmental pollution as in the case of solvent-type adhesives, and no problem of the solvent permeating into the elastic body. In addition, since the adhesive does not start to cure until it is irradiated with ultraviolet rays, there is a risk that the shaft cannot be inserted into the elastic body in time after applying the adhesive to the outer surface of the shaft, as in the case of using an instant adhesive. There is no workability.

It is a perspective view which shows one Embodiment of the roller of this invention. It is a 2-2 enlarged sectional view of FIG. It is a figure which shows the process of one Embodiment in the manufacturing method of the roller of this invention. It is a table which shows the composition of each Example and the evaluation of curing time and adhesive strength. It is a table which shows the structure of each comparative example and evaluation of curing time and adhesive force.

The roller 10 shown in FIGS. 1 and 2 comprises an elastic body 11 and a shaft 21 inserted through the elastic body 11, and the adhesive 25 provided on the outer surface of the shaft 21 covered with the elastic body 11 is cured. The elastic body 11 is adhered to the outer surface of the shaft 21. The roller 10 is suitable for a cleaning roller that cleans the surface of a charging roller of an electrophotographic apparatus, a toner supply roller that supplies toner to an image carrier, a paper feed roller, and the like.

The elastic body 11 has a cylindrical outer shape, and a through hole 13 for inserting the shaft 21 is formed in the center of the elastic body 11. The diameter and length of the elastic body 11 are determined according to the use of the roller, the equipment to be mounted, and the like.

The material of the elastic body 11 is not particularly limited as long as it is made of a material that allows ultraviolet rays to pass through the elastic body and does not interfere with the transmission of ultraviolet rays. For example, foams such as polyurethane foam, melamine foam, silicone foam, EPDM foam, polystyrene foam, and polyethylene foam that do not contain a substance that interferes with the transmission of ultraviolet rays can be mentioned. Examples of the substance that interferes with ultraviolet rays include pigments such as carbon, additives such as calcium carbonate, talc, and sulfur.

The thickness of the elastic body 11 is preferably 0.1 to 6 mm. If it is less than 0.1 mm, it becomes difficult to obtain the effect of the elastic body 11 on the roller 10. On the other hand, if it exceeds 6 mm, it may not be suitable depending on the application of the roller. The thickness of the elastic body 11 is the thickness of the portion between the inner peripheral surface of the through hole 13 of the elastic body 11 and the outer peripheral surface of the elastic body 11.
The density of the elastic body 11 is preferably ^{9.2 to 250 kg / m 3.} If the density is too low, the function of the roller 10 is not preferable, and if the density is too high, the roller 10 does not function as an elastic body.

The shaft 21 is made of a rod-shaped body made of metal, resin, or the like, and constitutes a core material of the roller 10. The metal shaft has excellent durability, while the resin shaft has excellent lightness. Examples of the resin include CFRP, polyethylene and polypropylene.

The adhesive 25 is made of an ultraviolet curable resin. Examples of the ultraviolet curable resin include acrylic resin (polymer type acrylate), urethane resin (urethane acrylate), vinyl ester resin, polyester / alkyd resin (epoxy acrylate) and the like.

The adhesive 25 made of an ultraviolet curable resin is applied to the outer surface of the shaft 21 before the shaft 21 is inserted into the elastic body 11, and after the shaft 21 is inserted into the elastic body 11 and covered with the elastic body 11, it is elastic. Ultraviolet rays are irradiated from the outside of the body 11 and cured by the ultraviolet rays transmitted through the elastic body 11, and the elastic body 11 and the shaft 21 are adhered to each other. The UV curable resin applied to the shaft 21 has a viscosity when uncured (when coated) from the viewpoint of coatability on the outer surface of the shaft and retention of the UV curable resin on the outer surface of the shaft until it is inserted into an elastic body. It is preferably 0.5 to 50 Pa · s. When it is less than 0.5 Pa · s, it is difficult to hold the adhesive on the shaft and it is difficult to obtain a film thickness. When it exceeds 50 Pa · s, it is difficult to apply the adhesive uniformly, and it is easy for the shaft to be inserted into the elastic body.

The method for manufacturing the roller 10 includes at least an adhesive coating step, a shaft insertion step, an ultraviolet irradiation / adhesive curing step, and if necessary, a polishing step to be performed thereafter. Each step will be described with reference to FIG. In each manufacturing process shown in FIG. 3, the code of each member was distinguished from those having only the numbers in FIGS. 1 and 2 by adding "A" after the numbers, but FIGS. 3 and 1 and 2 Members with the same number part are made of the same material.

In the adhesive application step, an adhesive 25A made of an ultraviolet curable resin is applied to the outer surface of the shaft 21A. The shaft 21A is made of metal or resin. The adhesive 25A can be applied by a die coating method in which the shaft is rotated in the circumferential direction, a dipping method, a spray method, or the like. The coating thickness of the adhesive 25A is preferably 50 to 600 μm.

In the shaft insertion step, the shaft 21A after applying the adhesive 25A made of ultraviolet curable resin is inserted into the elastic body 11A made of a material that transmits ultraviolet rays, and the adhesive 25A on the outer surface of the shaft 21A is covered with the elastic body 11A. .. A through hole 13A for inserting the shaft 21A is formed in the center of the elastic body 11A by a rotary drill or the like. The inner diameter of the through hole 13A formed in the elastic body 11A may be the same as or smaller than the outer diameter of the shaft 21A. The outer shape of the elastic body 11A is not limited to the same cylindrical shape as the product, and may be a square cylinder having a polygonal cross section. If the outer shape of the elastic body 11A is different from the outer shape of the product, the polishing step described later is performed to obtain the outer shape of the product. The thickness of the elastic body 11A used here (thickness between the inner peripheral surface of the through hole 13A of the elastic body 11A and the outer peripheral surface of the elastic body 11A) is preferably 6 mm or less. If the thickness of the elastic body 11A is too large, ultraviolet rays cannot efficiently pass through the elastic body in the subsequent ultraviolet irradiation / adhesive curing step.

In the ultraviolet irradiation / adhesive curing step, the adhesive 25A made of an ultraviolet curable resin coated on the outer surface of the shaft 21A covered with the elastic body 11A is cured by irradiating ultraviolet rays from the outside of the elastic body 11A. By the curing, the elastic body 11A is adhered to the outer surface of the shaft 21A. The irradiation of ultraviolet rays can be performed by an ECS-4011GX (lamp 120 W / cm, 3 kW) device manufactured by Eye Graphic Co., Ltd. The optimum amount of ultraviolet irradiation varies depending on the ultraviolet curable resin used, but it is preferably 100 to 1,000 mW / cm ² (illuminance meter PD-365 manufactured by Eye Graphic Co., Ltd.) and the irradiation time is 5 to 90 seconds.

In the polishing step, the outer peripheral surface of the elastic body 11A is polished with a polishing tool 31A such as a polishing roller to obtain the product shape and dimensions. The polishing method is not particularly limited. For example, a method in which both ends of the shaft 21A are attached to a rotating device, the elastic body 11A is rotated together with the shaft 21A, and the polishing tool 31A pressed against the outer peripheral surface of the elastic body 11A is moved in a direction parallel to the shaft 21A. Depending on the shape of the elastic body 11A through which the shaft 21A is inserted, the polishing step may not be necessary.

Further, depending on the use of the roller, for example, a polishing powder removing step, a surface heat pressing step, or the like may be performed after the polishing step.

・ Example 1
A metal shaft having an outer diameter of 4 mm x a length of 240 mm and a SUS303 was used as the shaft, and a polyurethane foam having an outer diameter of 16 mm x a length of 220 mm (density 70 kg / m ³ , free of pigments and inorganic fillers) was used as the elastic body. Product name: EP-70, manufactured by Inoac Corporation), using a 6 mm thick adhesive with a 4 mm diameter through hole formed in the center, urethane acrylate-based adhesive made of UV-curable resin, product name: CREA resin, product number: FLR The roller of Example 1 was manufactured as follows using −010, manufactured by Inoac Corporation, and a viscosity of 180 Pa · s.

An adhesive made of an ultraviolet curable resin having a thickness of 180 μm was applied to the outer surface of the shaft over a range of 220 mm in length by a roll coater. The shaft after applying the adhesive made of the ultraviolet curable resin was inserted into the through hole of the elastic body, and the adhesive made of the ultraviolet curable resin on the outer surface of the shaft was covered with the elastic body. After that, the outer surface of the elastic body is irradiated with ultraviolet rays having a main wavelength of 365 nm for 20 seconds using an ECS-4011GX (lamp 120 W / cm, 3 kW) device manufactured by Eye Graphic Co., Ltd. to cure the adhesive made of an ultraviolet curable resin, and the shaft A roller to which an elastic body was bonded was manufactured.

-Example 2
^{As an elastic body, a through hole with a diameter of 4 mm is formed in the center of a polyurethane foam (density 70 kg / m 3} , free of pigments and inorganic fillers, product name: EFF, manufactured by Inoac Corporation) with an outer diameter of 16 mm and a length of 220 mm. A roller having a thickness of 6 mm was used, and a roller of Example 2 was manufactured in the same manner as in Example 1 except that the irradiation time of ultraviolet rays was set to 20 seconds.

・ Example 3
^{As an elastic body, a through hole with a diameter of 4 mm is provided in the center of a polyurethane foam (density 21 kg / m 3} , free of pigments and inorganic fillers, product name: EFF, manufactured by Inoac Corporation) with an outer diameter of 16 mm and a length of 220 mm. A roller having a thickness of 6 mm was used, and a roller of Example 3 was manufactured in the same manner as in Example 1 except that the irradiation time of ultraviolet rays was set to 20 seconds.

・ Example 4
^{As an elastic body, a through hole with a diameter of 4 mm is formed in the center of a polyurethane foam (density 65 kg / m 3} , containing dye and anti-aging agent, product name: XP-278, manufactured by Inoac Corporation) with an outer diameter of 16 mm and a length of 220 mm. A roller having a thickness of 6 mm was used, and a roller of Example 4 was manufactured in the same manner as in Example 1 except that the irradiation time of ultraviolet rays was set to 20 seconds.

・ Example 5
As an elastic body, a melamine foam having an outer diameter of 16 mm and a length of 220 mm (density 9.2 kg / m ³ , product name: W, manufactured by Inoac Corporation) having a through hole with a diameter of 4 mm formed in the center and a thickness of 6 mm is used. The rollers of Example 5 were manufactured in the same manner as in Example 1 except that the irradiation time of ultraviolet rays was set to 20 seconds.

-Example 6
As an elastic body, a silicone foam having an outer diameter of 16 mm and a length of 220 mm (density 250 kg / m ³ , product name: XS-004, manufactured by Inoac Corporation) having a through hole with a diameter of 4 mm formed in the center and a thickness of 6 mm is used. The roller of Example 6 was manufactured in the same manner as in Example 1 except that the irradiation time of ultraviolet rays was set to 20 seconds.

-Example 7
As an elastic body, a through hole with a diameter of 4 mm is formed in the center of ^{an EPDM foam (including liquid peroxide, density 150 kg / m 3} , product name: XE-012, manufactured by Inoac Corporation) having an outer diameter of 16 mm and a length of 220 mm. A roller having a thickness of 6 mm was produced in the same manner as in Example 1 except that the irradiation time of ultraviolet rays was 20 seconds.

Further, Comparative Examples 1 to 5 using the same elastic body as in Example 3 and different adhesives, Comparative Example 6 using a carbon-containing polyurethane foam as the elastic body, and natural rubber foam containing a large amount of impurities. Rollers of Comparative Example 7 using a body and Comparative Example 8 using an EPDM foam containing sulfur were produced.

・ Comparative example 1
In Comparative Example 1, an olefin-based hot melt adhesive, product name: N-tuck NSH-784, manufactured by Nakagawa Shokai Co., Ltd. was used as the adhesive, and the hot melt adhesive was heated to 180 ° C. and melted, and the melted hot A melt adhesive is applied to the outer surface of the shaft with a thickness of 180 μm, and then the cooled shaft is inserted through the through hole of the elastic body and heated to 180 ° C. by a high frequency induction heating device, and then cooled at room temperature to form the shaft. A roller with an elastic body adhered was manufactured.

・ Comparative example 2
In Comparative Example 2, a vinyl acetate-based adhesive (solvent is water, emulsion type), product name: KE60, manufactured by Konishi Co., Ltd. was used as the adhesive, and the vinyl acetate-based adhesive was applied to the outer surface of the shaft with a thickness of 180 μm. A roller in which the elastic body was adhered to the shaft was manufactured by inserting the shaft through the through hole of the elastic body and hardening the shaft.

・ Comparative example 3
In Comparative Example 3, a synthetic rubber adhesive (organic solvent type), product name: 5430LF, manufactured by Cemedyne Co., Ltd. was used as the adhesive, and the synthetic rubber adhesive was applied to the outer surface of the shaft with a thickness of 180 μm, and the shaft was applied. A roller in which the elastic body was adhered to the shaft was manufactured by inserting it into a through hole of the elastic body and hardening it.

・ Comparative example 4
In Comparative Example 4, a cyanoacrylate-based moisture-curable adhesive, product name: 3000 Super, manufactured by Cemedyne Co., Ltd. was used as the adhesive, and the moisture-curable adhesive was applied to the outer surface of the shaft with a thickness of 180 μm, and the shaft was applied. A roller in which the elastic body was adhered to the shaft was manufactured by inserting it into a through hole of the elastic body and curing it.

・ Comparative example 5
In Comparative Example 5, a silicone-based moisture-curable adhesive, product name: KE-3475, manufactured by Shin-Etsu Chemical Industry Co., Ltd. was used as the adhesive, and the moisture-curable adhesive was applied to the outer surface of the shaft with a thickness of 180 μm. By inserting the shaft through the through hole of the elastic body and curing it, a roller in which the elastic body was adhered to the shaft was manufactured.

-Comparative example 6
Comparative Example 6 is an elastic body having a thickness of 6 mm in which a through hole having a diameter of 4 mm is formed in the center of a carbon-containing polyurethane foam (density 70 kg / m ^{3, product name: EP-70C, manufactured by Inoac Corporation).} Was used, but was the same as in Example 1.

-Comparative example 7
Comparative Example 7 has a thickness of 6 mm in which a through hole having a diameter of 4 mm is formed in the center of ^{a natural rubber foam (density 150 kg / m 3} , product name: XN-021, manufactured by Inoac Corporation) containing a large amount of impurities as an elastic body. The same as in Example 1 was carried out except that the irradiation time of ultraviolet rays was set to 20 seconds.

-Comparative example 8
Comparative Example 8 is an elastic body having a thickness of 6 mm in which a through hole having a diameter of 4 mm is formed in the center of an EPDM foam containing sulfur (density 150 kg / m ^{3, product name: XE-013, manufactured by Inoac Corporation).} The same as in Example 1 except that the irradiation time of ultraviolet rays was set to 20 seconds.

For the rollers of each Example and each Comparative Example, the time (curing time) from the time when the shaft after the adhesive was applied to the elastic body was completed to the time when the adhesive was cured was measured. The curing time of the adhesive in each Example and each Comparative Example was set as follows. The time when the curing of Examples 1 to 7 and Comparative Examples 6 to 8 using the ultraviolet curable resin adhesive was completed was set to the time when the elastic body was destroyed and the adhesive was solidified rather than liquid or paste. The time when the roller of Comparative Example 1 using the hot melt adhesive was cured was set to the time when the shaft reached 35 ° C. by natural cooling. At the time when the roller of Comparative Example 2 using the vinyl acetate adhesive (emulsion type) and the roller of Comparative Example 3 using the synthetic rubber adhesive (organic solvent type) were cured, the elastic body was used as in the example. It was set at the time when the adhesive was broken and solidified rather than liquid or pasty. At the time when the rollers of Comparative Example 4 and the rollers of Comparative Example 5 using the moisture-curable adhesive were cured, the elastic body was broken and the adhesive was solidified instead of being liquid or pasty, as in the examples. As a point in time.

In addition, the adhesive strength of the rollers of each example and each comparative example was evaluated. The adhesive strength evaluation method is passed if both ends of the shaft are fixed and the elastic body does not rotate (idle) around the outer circumference of the shaft when the elastic body is rotated in the circumferential direction, or if the elastic body is destroyed. , It was rejected when it rotated (idle).

For each Example and each Comparative Example, the evaluation results of the curing type, the adhesive composition, the curing time, and the adhesive strength are shown in FIGS. 4 and 5.
The rollers of each example using the ultraviolet curable resin adhesive had a short curing time of 0.25 minutes and passed the evaluation of the adhesive strength.

On the other hand, the roller of Comparative Example 1 using the hot melt adhesive had a long curing time of 120 minutes and passed the evaluation of the adhesive strength.
The roller of Comparative Example 2 using the vinyl acetate-based adhesive (emulsion type) had a long curing time of 1440 minutes and passed the evaluation of the adhesive strength.
The roller of Comparative Example 3 using the synthetic rubber adhesive (organic solvent type) had a long curing time of 30 minutes and passed the evaluation of the adhesive strength.
The roller of Comparative Example 4 using the moisture-curable cyanoacrylate-based adhesive had a long curing time of 10 minutes and failed to evaluate the adhesive strength.
The roller of Comparative Example 5 using the moisture-curable silicone-based adhesive had the longest curing time of 2880 minutes and passed the evaluation of the adhesive strength.

Further, in Comparative Example 6 in which a polyurethane foam containing carbon is used as the elastic body and an ultraviolet curable resin adhesive is used as the adhesive, the carbon contained in the elastic body hinders the transmission of ultraviolet rays, so that the elastic body is covered with the elastic body. The ultraviolet curable resin on the outer surface of the broken shaft did not cure, and the adhesive strength was unacceptable.

Comparative Example 7 in which a natural rubber foam containing a large amount of impurities is used as the elastic body and an ultraviolet curable resin adhesive is used as the adhesive is covered with the elastic body because the impurities contained in the elastic body hinder the transmission of ultraviolet rays. The ultraviolet curable resin on the outer surface of the damaged shaft did not cure, and the adhesive strength was unacceptable.

Comparative Example 8 in which an EPDM foam containing sulfur was used as the elastic body and an ultraviolet curable resin adhesive was used as the adhesive was covered with the elastic body because the sulfur contained in the elastic body hindered the transmission of ultraviolet rays. The ultraviolet curable resin on the outer surface of the shaft did not cure, and the adhesive strength was unacceptable.

As described above, the rollers of the example in which the ultraviolet curable resin adhesive is used and the foam that transmits ultraviolet rays is used as the elastic body are hot melt adhesive, emulsion type adhesive, organic solvent type adhesive, and moisture curable type adhesive. Compared to the roller of the comparative example using other types of adhesives such as agents, the time required to cure the adhesive is shorter, and unlike hot melt adhesives, it does not need to be preheated and melted, which simplifies the bonding work. The adhesiveness between the elastic body and the shaft is good.

10 Roller 11, 11A Shaft 13, 13A Through hole of elastic body 21, 21A Elastic body 25, 25A Adhesive 31A Abrasive tool

Claims (3)

A roller composed of an elastic body and a shaft inserted through the elastic body, and the elastic body is adhered to the outer surface of the shaft by curing an adhesive provided on the outer surface of the shaft covered with the elastic body. In
The elastic body is made of a material that allows ultraviolet rays to pass through.
A roller characterized in that the adhesive is made of an ultraviolet curable resin and is cured by ultraviolet rays transmitted through the elastic body. The roller according to claim 1, wherein the elastic body has a thickness of 0.1 to 6 mm. In the method of manufacturing a roller in which a shaft is inserted through an elastic body,
The elastic body is made of a material that allows ultraviolet rays to pass through.
An adhesive application step of applying an adhesive made of an ultraviolet curable resin to the outer surface of the shaft, and
A shaft insertion step of inserting the adhesive-coated shaft into the elastic body, and
An ultraviolet irradiation / adhesive curing step of irradiating the elastic body with ultraviolet rays and curing the adhesive on the outer surface of the shaft covered with the elastic body by the ultraviolet rays transmitted through the elastic body.
Including
A method for manufacturing a roller, which comprises adhering the elastic body to the outer surface of the shaft by curing the adhesive with the ultraviolet rays.

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