WO2015146996A1 - Rouleau de support de couchage pour la fabrication du papier - Google Patents

Rouleau de support de couchage pour la fabrication du papier Download PDF

Info

Publication number
WO2015146996A1
WO2015146996A1 PCT/JP2015/058953 JP2015058953W WO2015146996A1 WO 2015146996 A1 WO2015146996 A1 WO 2015146996A1 JP 2015058953 W JP2015058953 W JP 2015058953W WO 2015146996 A1 WO2015146996 A1 WO 2015146996A1
Authority
WO
WIPO (PCT)
Prior art keywords
roll
coating
backing roll
rubber
lining layer
Prior art date
Application number
PCT/JP2015/058953
Other languages
English (en)
Japanese (ja)
Inventor
聡 西岡
宣旭 須和
道忍 明石
Original Assignee
株式会社金陽社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社金陽社 filed Critical 株式会社金陽社
Publication of WO2015146996A1 publication Critical patent/WO2015146996A1/fr

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
    • D21H23/56—Rolls
    • D21H23/58—Details thereof, e.g. surface characteristics, peripheral speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor

Definitions

  • the present invention relates to a coater backing roll for use in coating a paper surface.
  • paper is manufactured by preparing a stock, making a paper to obtain a base paper, and coating the surface of the obtained base paper.
  • the coating liquid is applied to the surface of the base paper by a coating device, thereby improving the beauty or printability of the paper product.
  • Coating equipment includes a blade coater method and a roll coater method.
  • a doctor blade is used for the blade coater method, and this adjusts the coating amount called leveling, scrapes off excess coating liquid and coating waste, and smoothes the coating surface.
  • the coating solution contains components such as fillers such as inorganic and latex, sizing agents and surfactants.
  • these components include those similar to rubber compounding materials generally used as a rubber material for the surface layer of the backing roll. And many of those components have high affinity with a backing roll. Therefore, the coating liquid is likely to adhere or deposit on the roll surface. When the coating liquid adheres to the backing roll surface, it affects the base paper traveling there, and affects the paper quality and operability. Further, since the doctor blade is disposed in contact with the backing roll, the backing roll is likely to be deformed at the position of the base paper edge or roll edge due to the contact pressure of the doctor blade. These deformations cause dents and wear on the backing roll surface.
  • an object of the present invention is to provide a papermaking coater backing roll capable of stabilizing coating quality, reducing maintenance frequency, and improving work efficiency.
  • a papermaking coater backing roll for solving the above problems includes a roll body and a lining layer provided as an outermost layer concentrically with the roll body.
  • the surface free energy of the lining layer is 25 ⁇ 10 ⁇ 5 N / cm or less.
  • the paper coater backing roll of the present invention it is possible to stabilize coating quality, reduce maintenance frequency, and improve work efficiency.
  • FIG. 1 is a perspective view showing an example of a papermaking coater backing roll.
  • FIG. 2 is a perspective view showing a further example of a papermaking coater backing roll.
  • FIG. 3 is a schematic diagram illustrating an example of a coating apparatus.
  • FIG. 4 is a diagram illustrating the contact angle.
  • FIG. 5 is a schematic diagram showing a testing machine.
  • the coater backing roll for papermaking is a roll for supporting the paper when coating the surface of the paper in the coating apparatus.
  • paper here is prepared by using pulp fiber as a paper material, and entangled with it, a synthetic sheet manufactured using a polymer such as a polypropylene film as a paper material, and a dry nonwoven fabric. It is used for the same purposes as paper and paper.
  • FIG. 1 is a perspective view showing an example of a backing roll.
  • the backing roll 10 includes a cylindrical roll body 11 and a cylindrical lining layer 12 that constitutes the outermost layer of the backing roll 10 along the cylindrical surface of the roll body 11.
  • the backing roll 10 may further include shaft portions 13 a and 13 b extending from both ends of the roll body 11.
  • the material of the roll body 11 may be a high-rigidity material such as stainless steel, aluminum alloy, carbon FRP, and iron, but stainless steel is preferable.
  • the roll body 11 may have a hollow cylindrical shape or a hollow cylindrical shape.
  • the shaft portions 13a and 13b are generally called journals.
  • the shaft portions 13a and 13b are used to pivotally support both ends of the roll body 11 and / or to be fitted with the driving components, and have a diameter and a length selected for that purpose.
  • the end portions of the shaft portions 13a and 13b may be further processed as desired.
  • the roll main body 11 and the shaft portions 13a and 13b may be formed integrally, or the roll main body 11 and the shaft portions 13a and 13b may be formed as separate parts and further combined. Further, the shaft portions 13 a and 13 b may be both ends of one shaft penetrating the roll body 11.
  • the lining layer 12 is provided concentrically with the roll body 11 so as to cover the cylindrical surface of the roll body 11.
  • the lining layer 12 and the roll body 11 are firmly bonded to each other so that they can be used. Further, a further layer may be interposed between the lining layer 12 and the roll body 11.
  • the lining layer 12 may be made of any rubber material having a surface free energy of the lining layer 12 of 25 ⁇ 10 ⁇ 5 N / cm or less, that is, 25 dyn / cm or less.
  • the surface free energy can be calculated from data measured using, for example, a contact angle measuring machine and a wetting reagent.
  • wetting reagents having different surface tensions are prepared.
  • One of these wetting reagents is dropped on the target member, and the contact angle is measured with a contact angle measuring machine with 1/2 of the contact angle ⁇ as a measurement angle. This operation is performed for all wet reagents.
  • the cos ⁇ is calculated for each of the obtained plurality of measurement angles.
  • the value of cos ⁇ obtained on the vertical axis is plotted on the graph, and the surface tension ⁇ (dyn / cm) for each wetting reagent is plotted on the horizontal axis.
  • the method for obtaining the surface free energy is known in addition to the above method, but the surface free energy can be similarly obtained by any of these known methods, and the value obtained thereby. May be the surface free energy value. Further, the surface free energy is affected by the material of the lining layer 12 surface.
  • the lining layer 12 has a surface free energy value of 25 ⁇ 10 ⁇ 5 N / cm or less
  • the surface of the backing roll 10 becomes water-repellent, and a property that is difficult to wet is obtained. This makes it difficult for the coating liquid to adhere and accumulate.
  • the need for re-polishing and roll replacement is reduced as compared with the prior art, and the backing roll 10 can be used for coating over a longer period of time with less maintenance or maintenance-free.
  • the coating liquid it is possible to prevent dents on the surface of the backing roll caused by the adhesion. Further, even when used for a long time, the penetration of the coating liquid can be prevented, whereby the physical properties of the backing roll can be maintained for a longer period.
  • the lining layer 12 may have the following ranges of tensile strength, tear strength, impact resilience, compression set, surface roughness, and strength.
  • the tensile strength of the lining layer 12 may be 6 Mp or more, preferably 8 Mp or more.
  • the tensile strength is measured by a tensile test of JIS K6251-2010 standard.
  • the tear strength may be 20 N / mm or more.
  • the tear strength is measured according to JIS K6252-2007.
  • the impact resilience may be 40% or more.
  • the impact resilience is measured by a Rupke test or a trypso test, which is a resilience test standardized by JIS K6255-2013.
  • Compression set may be less than 15%.
  • the compression set is measured by the method of obtaining compression set at normal temperature, high temperature and low temperature according to JIS K6262-2013 standard.
  • the average surface roughness of the lining layer 12 is preferably JIS B0601-1994 standard surface roughness Ra of 0.3 or more, but is not limited thereto.
  • the surface roughness may be, for example, in the range of JIS B0601-1994 surface roughness Ra 0.3 to 10.0 ⁇ m, and preferably in the range of Ra 0.3 to 5.0 ⁇ m.
  • the surface roughness of the coating layer 14 is measured by a surface roughness measuring instrument corresponding to the JIS B0601-1994 standard.
  • the hardness of the lining layer 12 may be JIS A 60-80, preferably 65-75, more preferably about 70.
  • the hardness is measured by a durometer hardness test using a type A durometer corresponding to the JIS K6253-2012 standard. Specifically, it may be measured by any instrument that can measure JIS A hardness, for example, a JIS A hardness measuring instrument manufactured by Kobunshi Keiki Co., Ltd.
  • the surface free energy of the lining layer 12 is 25 ⁇ 10 ⁇ 5 N / cm or less, and the ranges of tensile strength, tear strength, impact resilience, and compression set are in the above-described numerical ranges.
  • the lining layer of the backing roll has a surface free energy of 25 ⁇ 10 ⁇ 5 N / cm or less, so that adhesion and deposition of the coating liquid are prevented, and further, dents due to adhesion and deposition are prevented.
  • better wear resistance and dent resistance can be obtained by balancing the values of the physical properties of the lining layer 12, such as tensile strength, tear strength, impact resilience, and compression set.
  • Examples of the rubber material for the lining layer 12 include natural rubber, isoprene rubber, butadiene rubber, styrene butadiene rubber, acrylonitrile butadiene rubber, butyl rubber, chloroprene rubber, epichlorohydrin rubber, fluorine rubber, ethylene propylene rubber, acrylic rubber, and silicone rubber. , Urethane rubber or chlorosulfonated polyethylene, or a combination of any two or more thereof.
  • One example of a preferable rubber material for the lining layer 12 is silicone rubber. Examples of silicone rubbers are high temperature vulcanization (HTV) silicone rubber, low temperature vulcanization (LTV) silicone rubber and room temperature vulcanization (RTV) silicone rubber, and combinations thereof.
  • the lining layer 12 may include one layer or a plurality of layers. In the case of including a plurality of layers, the lining layer 12 may include a plurality of layers formed of the same or different types of rubber materials.
  • the backing roll 10 is manufactured as follows, for example. First, a roll body having a desired length and diameter having a shaft portion is prepared as desired. Next, the surface of the roll body is blasted and an adhesive is applied. Separately, a rubber material made of a desired material is kneaded at a desired blending ratio to produce an unvulcanized rubber sheet. An adhesive is applied to the blasted portion of the roll body, and an unvulcanized rubber sheet is wound around the blasted portion, and molded and vulcanized. Next, the surface of the vulcanized rubber formed on the cylindrical surface of the roll body is polished. Polishing of the vulcanized rubber surface is performed concentrically with the roll body. As a result, a backing roll as a final product is obtained.
  • the rubber material raw material may include a raw rubber and a desired additive such as a vulcanizing agent, a vulcanizing aid, an anti-aging agent, a processing aid, a filler and / or a plasticizer.
  • the adhesive may be appropriately selected according to the rubber material.
  • the backing roll may be manufactured as follows. First, a roll body having a desired length and diameter having a shaft portion is prepared as desired. Next, the surface of the roll body is blasted, and after application of the adhesive, it is assembled into a casting mold. Separately, a liquid rubber compound is prepared. That is, a predetermined raw material such as a rubber material is prepared at a predetermined blending ratio. They are stirred and mixed. Mixing may be performed under reduced pressure as desired. This gives a liquid rubber formulation. Next, the liquid rubber compound is poured into a casting mold prepared in advance. This is cured. Curing may be performed under appropriate conditions according to the raw materials and the mixing ratio, and secondary vulcanization is performed as desired. The obtained cured product is taken out from the casting mold together with the roll body, and surface polishing is performed to form a lining layer on the cylindrical surface of the roll body. As a result, a backing roll as a final product is obtained.
  • a predetermined raw material such as a rubber material is prepared at a pre
  • the adhesive may be appropriately selected according to the rubber material.
  • a backing roll using silicone rubber as a rubber material constituting the lining layer may be manufactured by this method.
  • the rubber material raw material may contain a silicone polymer as a raw material rubber and desired additives such as a catalyst, a processing aid and a filler.
  • desired additives such as a catalyst, a processing aid and a filler.
  • the mixing of the rubber material is performed by a planetary mixer or the like, and after being degassed by vacuum, it flows into the casting mold.
  • the method of forming the lining layer in the manufacturing of the backing roll is not limited to these examples, and may be appropriately selected according to the blending and blending ratio of the rubber material used. Good.
  • the method of forming the lining layer in the manufacturing of the backing roll is not limited to these examples, and may be appropriately selected according to the blending and blending ratio of the rubber material used. Good.
  • the method of forming the lining layer in the manufacturing of the backing roll is not limited to these examples, and may be appropriately selected according to the blending and blending ratio of the rubber material used. Good.
  • millable type rubber sheet winding molding, ribbon molding and extrusion molding, etc.
  • rotational molding may be used. Good.
  • the backing roll 10 may further include a coating layer outside the lining layer 12.
  • a coating layer outside the lining layer 12.
  • FIG. 2 is a perspective view showing an example of a further backing roll.
  • a backing roll 10 shown in FIG. 2 covers a cylindrical roll body 11, a cylindrical thick lining layer 12 concentrically with the roll body 11, and a cylindrical surface of the lining layer 12. And a coating layer 14.
  • the coating layer 14 constitutes the outermost layer of the backing roll 10 concentrically with the roll body 11.
  • the coating layer 14 may be made of any rubber material having a surface free energy of 25 ⁇ 10 ⁇ 5 N / cm or less or any kind of resin known per se.
  • the rubber material used for the coating layer 14 may be any rubber material described above, for example.
  • a preferred resin that can be used for the coating layer 14 is a fluororesin.
  • fluororesins include perfluorinated resins such as polytetrafluoroethylene, partially fluorinated resins such as polychlorotrifluoroethylene, polyvinylidene fluoride and polyvinyl fluoride, and perfluoroalkoxy fluororesins, tetrafluoroethylene and hexafluoroethylene.
  • Fluorinated resin copolymers such as fluorinated propylene copolymer, ethylene / tetrafluoroethylene copolymer, and ethylene / chlorotrifluoroethylene copolymer.
  • the thickness of the coating layer 14 is, for example, 0.1 to 2 mm. With this thickness, the coating layer 14 can give the surface free energy of 25 ⁇ 10 ⁇ 5 N / cm or less to the lining layer 12 and at the same time make use of the physical properties of the rubber material constituting the lining layer 12. It becomes. When the backing roll 10 includes the coating layer 14, the surface free energy of the coating layer 14 may act as the surface energy of the lining layer.
  • the backing roll 10 Even after the surface is worn, the surface energy can be continuously maintained at 25 ⁇ 10 ⁇ 5 N / cm or less, which is more preferable.
  • the coating layer 14 may be formed on the backing roll obtained by the above-described method. That is, a coating layer is formed on the cylindrical surface of the lining layer of the backing roll obtained above.
  • the formation of the coating layer may be performed as follows, for example. First, before heat shrinkage, a commercially available heat shrink type resin tube having a diameter larger than the diameter of the lining layer and shrinking to a diameter smaller than the diameter of the lining layer is prepared as a covering. A roll body provided with a lining layer is inserted along the inside of the covering. Thereafter, the coated body is contracted by heating and is brought into close contact with the lining layer. Thereby, a coating layer is formed, and a backing roll having the coating layer is obtained as a final product.
  • An adhesive may be interposed between the covering and the lining layer to improve the adhesion. What is necessary is just to select an adhesive agent according to the material of a coating body and a lining layer. If desired, the surface of the coating layer may be polished concentrically with the roll body.
  • FIG. 3 is a schematic diagram showing a process of coating the surface of a strip-shaped paper (that is, a strip-shaped paper) by a general blade coater type coating apparatus.
  • the blade coater type coating device applies the coating liquid to the first coating portion for applying the coating liquid to the front surface of the belt to be coated and the back surface of the belt.
  • a second coating part In FIG. 3, the 1st coating part for apply
  • the backing roll 10 that rotates to support the belt-like paper 32 to be coated in the coating unit 31 and advance the belt-like paper 32 from below to above, and the belt-like paper 32 that is advanced by the backing roll 10
  • An applicator roll 35 for applying the coating liquid 34 to the front surface, a doctor blade 36 for scraping off the excess coating liquid 34 applied to the belt 32, and smoothing the coating surface;
  • a metering roll 37 for supplying the coating liquid 34 to the applicator roll 35 and a coating liquid pan 38 for supplying the coating liquid 34 to the metering roll 37 are provided.
  • the applicator roll 35 is disposed so as to face the backing roll 10 with the belt 32 interposed therebetween.
  • the doctor blade 36 is disposed so as to come into contact with the front side surface of the belt-like paper 32 or the coating liquid applied thereto. If necessary, the doctor blade 36 is pressed against the backing roll 10 with the belt-like paper 32 interposed therebetween.
  • the backing roll 10, the applicator roll 35, and the metering roll 37 are arranged so that their axes are parallel to each other. In the case of such a coating unit 31, each roll rotates as follows when the strip paper 32 is coated.
  • the backing roll 10 rotates counterclockwise.
  • the applicator roll 35 rotates clockwise.
  • the metering roll 37 rotates counterclockwise. In FIG. 3, the rotation direction of each roll and the traveling direction of the belt-like paper 32 are indicated by arrows.
  • the coating liquid pan 38 contains the coating liquid 34.
  • a part of the metering roll 37 is immersed in the coating liquid 34.
  • the coating liquid 34 attached to the surface of the metering roll 37 by dipping is continuously conveyed to the applicator roll 35 by the rotation of the metering roll 37. Due to the contact between the metering roll 37 and the applicator roll 35, the coating liquid 34 on the surface of the metering roll 37 moves to and adheres to the surface of the applicator roll 35.
  • the application liquid 34 on the surface of the applicator roll 35 is applied to the front surface of the belt 32 by bringing the applicator roll 35 into contact with the front surface of the belt 32 that is traveling.
  • the further coating part for applying the coating liquid to the back surface of the belt-like paper 32 basically has the same configuration as the coating part 31.
  • the belt-like paper 32 is sent to a further coating unit to coat the back side surface.
  • the backing roll contacts the front surface side of the belt 32 and supports the belt 32.
  • the applicator roll is disposed so as to face the backing roll via the belt-like paper 32, and causes the coating liquid to adhere to the back surface of the belt-like paper 32. Excess coating liquid, coating residue, etc. are scraped off by a doctor blade disposed opposite the backing roll.
  • the backing roll of the present invention there is little adhesion of the coating liquid to the surface of the backing roll and there is little dirt on the roll surface, so that maintenance on the machine can be reduced. Further, if adhesion of the coating liquid to the roll surface is reduced, contact of the doctor blade with the backing roll via the belt-like paper can be eliminated. In that case, it becomes possible to eliminate the contact pressure of the doctor blade with respect to the backing roll, and deformation at the position of the base paper etch or roll etch does not occur or can be reduced. Therefore, the impact on the roll surface due to adhesion of the coating liquid residue and the damage due to the contact pressure are small, and the roll surface is hardly damaged. Such an effect is due to the fact that the surface free energy of the lining layer is 25 ⁇ 10 ⁇ 5 N / cm or less.
  • silicone rubber materials are generally considered to be inferior in physical strength to general synthetic rubbers (NR, SRB, NBR, H-NBR, EPDM, etc.), but various physical properties such as Papers that have a physical strength suitable for coating that is more excellent in wear resistance and dent resistance by investigating a good balance of tensile strength, impact resilience and compression set, and clarifying good conditions Coater backing rolls can be provided.
  • the position of the base paper edge or roll edge is likely to be deformed by the doctor blade being placed in contact with the backing roll with contact pressure.
  • Deformation causes a dent or wear on the backing roll surface.
  • Deformation occurs, for example, at the start of coating as described below, at the time of coating thickness adjustment, and coating of various types and sizes of paper.
  • the doctor blade ground pressure is set to be strong in order to dislike taking out the coating liquid.
  • a device is made to reduce the coating thickness near the edge of both ends for the purpose of adjusting the winding shape of the paper.
  • the doctor blade pressure is high at the edge portion of the backing roll, and the rubber is escaping in the axial direction at the end portion, so that the degree of roll deformation is large, and surface rubber is likely to be chipped or worn.
  • the coating liquid jumps and causes uneven coating quality.
  • the roll edge is worn, it is necessary to replace the roll and perform polishing maintenance.
  • deformation such as dents occurs in a portion of the roll corresponding to the paper edge portion.
  • the roll surface is also deformed by the coating residue generated by the coating.
  • Such deformation can be achieved by frequently sanding the surface and paper edge on the machine without removing the roll from the coating device, or removing the coating device and polishing the surface, or removing the lining layer from the roll, It becomes necessary to form a lining layer again. For example, sanding is performed to repair adhesion of coating liquid, surface roughness of the roll surface, and deformation at the paper edge portion, but frequent sanding deteriorates productivity.
  • the backing roll of the present invention is excellent in preventing adhesion of coating liquid and coating residue. Therefore, it becomes possible to reduce or eliminate the contact pressure of the doctor blade. Thus, by using the backing roll of the present invention, the coating quality is stabilized, the maintenance frequency is greatly reduced, and the working efficiency is improved.
  • the surface free energy of the lining layer is 25 ⁇ 10 ⁇ 5 N / cm or less, and various physical properties such as tensile strength, tear strength, impact resilience, and compression set have a good balance.
  • a backing roll is provided that is excellent in adhesion and deposition prevention of coating liquid, strength or resilience against deformation, abrasion resistance and dent resistance. Thereby, even when the contact pressure of the doctor blade is high, an excellent restoring force from the inevitably occurring deformation (ie, dent) is provided.
  • Example 1 Physical property test Various rubber materials for the lining layer were prepared and their physical properties were compared.
  • Example 1 Silicone rubber
  • the rubber material is as follows: 100 parts by weight of a silicone polymer (KE7170U manufactured by Shin-Etsu Chemical Co., Ltd.) and 3 parts by weight of a crosslinking agent C-8 (manufactured by Shin-Etsu Chemical Co., Ltd.) A vulcanized rubber sheet was prepared and vulcanized. The surface of the obtained silicone rubber was polished to obtain the silicone rubber of Example 1.
  • a silicone polymer KE7170U manufactured by Shin-Etsu Chemical Co., Ltd.
  • a crosslinking agent C-8 manufactured by Shin-Etsu Chemical Co., Ltd.
  • Example 2 Silicone rubber
  • the raw material of the rubber material is as follows: 100 parts by weight of a silicone polymer (KE870U manufactured by Shin-Etsu Chemical Co., Ltd.) and 3 parts by weight of a cross-linking agent C-8 (manufactured by Shin-Etsu Chemical Co., Ltd.).
  • Rubber material was kneaded to prepare an unvulcanized rubber sheet and vulcanized.
  • the surface of the obtained silicone rubber was polished to obtain the silicone rubber of Example 2.
  • NBR Acrylonitrile butadiene rubber
  • the rubber material is as follows. 100 parts by weight of acrylonitrile butadiene rubber (Nipol 1042 made by Nippon Zeon) as raw rubber, 5 parts by weight of zinc oxide, 1 part by weight of stearic acid, 10 parts by weight of silica, 25 parts by weight of carbon black (HAF), bis (2-ethylhexyl) phthalate (DOP) 10 parts by weight, 2,6-di-tert-butyl-4-methylphenol (BHT) 1 part by weight, N-cyclohexyl-2-benzothiazolesulfenamide (CBS) 1 part by weight as a vulcanization accelerator , 2.0 parts by weight of sulfur.
  • Nipol 1042 made by Nippon Zeon
  • Rubber material was kneaded to prepare an unvulcanized rubber sheet, which was vulcanized.
  • the surface of the obtained NBR was polished to obtain the NBR rubber of Comparative Example 1.
  • Example 1, Example 2, and Comparative Example 1 were all JIS A70.
  • the surface free energies of the rubbers of Example 1, Example 2 and Comparative Example 1 were 20 ⁇ 10 ⁇ 5 N / cm, 21 ⁇ 10 ⁇ 5 N / cm and 38 ⁇ 10 ⁇ 5 N / cm, respectively.
  • Example 2 Test for backing roll (1) Production of backing roll A backing roll comprising the rubber materials of Examples 1 and 2 and Comparative Example 1 as lining layers was produced. The rubber material used was as described above.
  • an iron core with a roll body and shafts at both ends was prepared.
  • the outer diameter of the roll body is 300 mm and the length is 300 mm.
  • the thickness of the lining layer was 25 mm.
  • Example 1 and Example 2 and Comparative Example 1 were manufactured as follows. A rubber material was kneaded to prepare an unvulcanized rubber sheet. The cylindrical surface of the core metal roll body was blasted. An adhesive was applied to the blasted portion, an unvulcanized rubber sheet was wound around the portion, molded, and vulcanized. Next, the vulcanized rubber surface formed on the cylindrical surface of the roll body was polished.
  • Wettability test (1) A wettability test was performed on the surfaces of the backing rolls of Examples 1 and 2 and Comparative Example 1. The test was conducted using a contact angle measuring machine and water in an atmosphere of a temperature of 23 ° C. and a humidity of 48%. The roll was placed on the placement surface so that the roll axis was parallel to the placement surface. A water droplet of 100 ⁇ L was gently dropped on the top of the cylindrical surface of the roll. The contact angle was measured after 30 seconds and after 180 seconds. As shown in FIG. 4, the contact angle ⁇ is defined as an angle formed by a horizontal line 41 that is an interface between the roll surface and a water droplet and a tangent line 42 at the droplet end of the water droplet. As shown in FIG.
  • Example 1 and Example 2 both have a larger contact angle after 30 seconds and after 180 seconds than Comparative Example 1, and the change in contact angle over time is It was small. Also, Example 1 had a larger contact angle after 30 seconds than Example 2. Further, the change with time of the contact angle in Comparative Example 1 was the largest as compared with Example 1 and Example 2. The contact angle after 180 seconds was 117 °, and it was predicted that the contact angle would become smaller after a further time. From the above results, Example 1 and Example 2 were evaluated as having water repellency, but Example 1 showed higher water repellency than Example 2. Comparative Example 1 was evaluated as hydrophilic.
  • Example 1 when observation was continued for a long time, the effect that a coating liquid was repelled for a long time and a water droplet did not osmose
  • the coating liquid used was a coating liquid for coated paper.
  • the ingredients are a white pigment such as clay (kaolin) or calcium carbonate, and an adhesive (binder) such as starch, which are mixed.
  • the results are shown in Table 3.
  • Example 1 and Example 2 When immersed in either warm water or coating solution, the hardness change was JIS A-1 in any of Example 1, Example 2, and Comparative Example 1. In Example 1 and Example 2, the weight change rate was smaller than that in Comparative Example 1. About Example 1 and Example 2, the weight change rate in warm water was +0.21, and the weight change rate in a coating liquid was +0.23, and there was no big difference. Regarding Comparative Example 1, the warm water had a weight change rate of +3.15, and the coating liquid was +0.72.
  • Example 1 and Example 2 were repelled in the form of water droplets on their surfaces.
  • the coating liquid applied to Comparative Example 1 covered the entire surface uniformly white.
  • Example 1 and Example 2 it was revealed that the backing roll surface has water repellency and does not penetrate by repelling the coating liquid.
  • Example 1 The surface of Example 1 was not changed from the initial state before rotation. That is, no wear or deformation by the doctor blade was observed. On the other hand, wear lines were observed on the surface of Comparative Example 1. Furthermore, more and more deep wear streaks were observed on the surface of Example 2 than in Comparative Example 1.
  • FIG. 5 is a schematic diagram of a testing machine.
  • the backing roll 10, 51 or 52 of Example 1 and Example 2 and Comparative Example 1 and the metal roll 53 are vertically moved so that the backing roll 10, 51 or 52 is upward so that their axes are parallel to each other. Arranged, each shaft was attached to the drive.
  • the backing roll 10, 51 or 52 was rotated in the clockwise direction, and the metal roll was rotated in the counterclockwise direction so that the nip traveled. All the tests were performed under the same rotation conditions.
  • the rotational conditions are as follows: rotational speed 450 m / min (410 rpm), temperature: 60 ° C., nip pressure: 10 kg / cm, continuous operation for 180 minutes.
  • Example 2 and Comparative Example 1 were also tested in the same manner.
  • the silicone rubber of Example 2 was shown to be inferior to the NBR rubber. This is data that supports what has been considered in the past. However, this experiment proved that Example 1 has a strength equal to or higher than that of NBR rubber.
  • the characteristic of the backing roll of Example 1 is that the surface free energy is 25 ⁇ 10 ⁇ 5 N / cm or less and has specific physical properties. The effect of Example 1 is an overall effect of these characteristics, and is suggested to be due to the surface free energy being 25 ⁇ 10 ⁇ 5 N / cm or less.
  • the backing roll of the embodiment is excellent in water repellency, abrasion resistance and dent resistance. Further, according to the backing roll, it was proved that the surface contamination and accumulation by the coating liquid can be prevented, and the strength against deformation, that is, the resilience, wear resistance and dent resistance are excellent. Thereby, the coating quality can be stabilized, the maintenance frequency can be reduced, and the working efficiency can be improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Coating Apparatus (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Paper (AREA)

Abstract

Rouleau de support de couchage (10) pour la fabrication du papier comprenant un corps de rouleau (11) et une couche de revêtement (12) disposé de manière concentrique avec le corps de rouleau (11) en tant que couche la plus à l'extérieur. L'énergie de surface libre de la couche de revêtement (12) est inférieure ou égale à 25×10-5 N/cm.
PCT/JP2015/058953 2014-03-25 2015-03-24 Rouleau de support de couchage pour la fabrication du papier WO2015146996A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-061810 2014-03-25
JP2014061810A JP5782542B1 (ja) 2014-03-25 2014-03-25 製紙用コーターバッキングロール

Publications (1)

Publication Number Publication Date
WO2015146996A1 true WO2015146996A1 (fr) 2015-10-01

Family

ID=54195508

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/058953 WO2015146996A1 (fr) 2014-03-25 2015-03-24 Rouleau de support de couchage pour la fabrication du papier

Country Status (2)

Country Link
JP (1) JP5782542B1 (fr)
WO (1) WO2015146996A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111757782A (zh) * 2018-02-20 2020-10-09 三菱制纸株式会社 无纺布涂布机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3714100A1 (fr) * 2017-11-21 2020-09-30 3M Innovative Properties Company Procédé et appareil de revêtement d'une toile ample

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05337426A (ja) * 1992-06-04 1993-12-21 Ishikawajima Harima Heavy Ind Co Ltd 塗工装置
JPH07309495A (ja) * 1994-03-23 1995-11-28 Mitsubishi Paper Mills Ltd 表面金属性カーボンロール及びその製造方法
JP2001038267A (ja) * 1999-07-29 2001-02-13 Dainippon Ink & Chem Inc バックアップロール及びバックアップロールを用いた塗工方法
JP2002266842A (ja) * 2001-03-06 2002-09-18 Ishikawajima Harima Heavy Ind Co Ltd 塗工用ロール
JP2006116498A (ja) * 2004-10-25 2006-05-11 Daio Paper Corp 塗工ブレード及びこれを用いたブレード塗工装置
JP2007175926A (ja) * 2005-12-27 2007-07-12 Konica Minolta Photo Imaging Inc インクジェット記録用紙の製造方法及び該インクジェット記録用紙の製造方法を用いて製造されたインクジェット記録用紙
JP2010116646A (ja) * 2008-11-13 2010-05-27 Oji Paper Co Ltd 印刷用塗工紙の製造方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05337426A (ja) * 1992-06-04 1993-12-21 Ishikawajima Harima Heavy Ind Co Ltd 塗工装置
JPH07309495A (ja) * 1994-03-23 1995-11-28 Mitsubishi Paper Mills Ltd 表面金属性カーボンロール及びその製造方法
JP2001038267A (ja) * 1999-07-29 2001-02-13 Dainippon Ink & Chem Inc バックアップロール及びバックアップロールを用いた塗工方法
JP2002266842A (ja) * 2001-03-06 2002-09-18 Ishikawajima Harima Heavy Ind Co Ltd 塗工用ロール
JP2006116498A (ja) * 2004-10-25 2006-05-11 Daio Paper Corp 塗工ブレード及びこれを用いたブレード塗工装置
JP2007175926A (ja) * 2005-12-27 2007-07-12 Konica Minolta Photo Imaging Inc インクジェット記録用紙の製造方法及び該インクジェット記録用紙の製造方法を用いて製造されたインクジェット記録用紙
JP2010116646A (ja) * 2008-11-13 2010-05-27 Oji Paper Co Ltd 印刷用塗工紙の製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111757782A (zh) * 2018-02-20 2020-10-09 三菱制纸株式会社 无纺布涂布机

Also Published As

Publication number Publication date
JP2015183325A (ja) 2015-10-22
JP5782542B1 (ja) 2015-09-24

Similar Documents

Publication Publication Date Title
US5798181A (en) Fluoropolymer coated elastomeric rollers and structures
JP5782542B1 (ja) 製紙用コーターバッキングロール
WO2008000824A1 (fr) Enveloppe de rouleau élastique, rouleau recouvert et son procédé de fabrication
CN106470800B (zh) 研磨膜
US20010051567A1 (en) Roller with ink-repellent coating
US6918865B2 (en) Roll cover
US6424815B1 (en) Oil coating roller, oil coating device, and fixing apparatus
US7014604B2 (en) Paper machine roll cover
US9290887B2 (en) Roll covering with improved dynamic properties and good recovery performance
US20110041713A1 (en) Contact or transfer roller
JPWO2016067916A1 (ja) 溝付ローラー、ならびにこれを用いたプラスチックフィルムの製造装置および製造方法
CN102656525B (zh) 导电辊及其制造方法
WO2018029996A1 (fr) Rouleau électroconducteur
JP6883314B2 (ja) 親水性ゴム組成物およびこれを用いた搬送用ロール
JP7138876B1 (ja) 給水ロール
JP7138877B1 (ja) 塗布ロール
JP7153187B2 (ja) 現像ローラおよびその製造方法
US20100124641A1 (en) Semiconductive belt and method for producing the same
WO2021024816A1 (fr) Dispositif de revêtement
JP6728448B2 (ja) ゴム組成物
KR101197298B1 (ko) 양단부가 보강된 백업 롤
US10421094B2 (en) Doctor blade, coating device, and method for producing laminated separator
JP4978980B2 (ja) アプリケータ用ベルト
JP2015024385A (ja) 塗工装置
JPH11282247A (ja) 導電性弾性ロール

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15768027

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15768027

Country of ref document: EP

Kind code of ref document: A1