WO2007088802A1 - Belt for papermaking machine - Google Patents
Belt for papermaking machine Download PDFInfo
- Publication number
- WO2007088802A1 WO2007088802A1 PCT/JP2007/051362 JP2007051362W WO2007088802A1 WO 2007088802 A1 WO2007088802 A1 WO 2007088802A1 JP 2007051362 W JP2007051362 W JP 2007051362W WO 2007088802 A1 WO2007088802 A1 WO 2007088802A1
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- WIPO (PCT)
- Prior art keywords
- belt
- layer
- polyurethane
- intermediate layer
- peripheral surface
- Prior art date
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/0209—Wet presses with extended press nip
- D21F3/0218—Shoe presses
- D21F3/0227—Belts or sleeves therefor
Definitions
- the present invention relates to a papermaking machine belt (hereinafter sometimes simply referred to as “belt”). More specifically, it is a papermaking machine belt having a multilayer outer peripheral surface and excellent physical properties such as crack resistance, abrasion resistance, and permanent set.
- a belt for a paper machine made of a substrate and polyurethane is used in each manufacturing process.
- a shrew press belt or a transfer belt is used in the press part of the papermaking process, and a soft force render belt is used in the calendar part.
- These belts are basically composed of a base made of woven fabric or the like and polyurethane laminated on both sides or one side of the base in order to develop the strength of the entire belt.
- a process in which a liquid urethane prepolymer is applied to a substrate, impregnated, and cured with a curing agent is taken.
- the belt is formed by laminating polyurethane on both surfaces or one surface of the base.
- the outer peripheral surface is in contact with the felt side
- the inner peripheral surface is in contact with a press roll or press shoe.
- the outer peripheral surface laminated on the felt side is subjected to severe pressure, and the drainage is usually provided with a drainage groove in order to increase the dewatering efficiency, so the bottom of the drainage groove and its edge force Crap This is easy to generate.
- there is a problem that the surface of the convex portion located between adjacent drain grooves is easily worn. Therefore, there is a great demand for improvement in crack resistance and wear resistance among polyurethanes constituting the belt, particularly polyurethane used as the outer peripheral surface.
- a diisocyanate having two isocyanate groups at the terminal and a polyol having a plurality of hydroxyl groups at the terminal are subjected to a polyaddition reaction to first produce a urethane prepolymer having an isocyanate group at the terminal.
- the liquid urethane prepolymer obtained by force is low in molecular weight, and is cured by adding a curing agent (chain extender) thereto and heating to obtain a solid high molecular weight polyurethane.
- the selection of the curing agent for the production of high molecular weight polyurethane is important as it greatly affects the properties of polyurethane.
- Typical examples of curing agents for papermaking polyurethanes are dimethylthiotoluenediamine (DMTDA) and methylenebisorthochloroaline (M BOCA), both of which are frequently used.
- DMTDA dimethylthiotoluenediamine
- M BOCA methylenebisorthochloroaline
- Crack resistance is an important property for papermaking belts, and DMTDA is often used for applications where crack resistance is important.
- Patent Document 1 when DMTDA is used as a polyurethane curing agent for a papermaking machine belt, a papermaking machine belt that balances crack resistance, wear resistance, and permanent distortion resistance is obtained. Is provided.
- a cured product of MBOCA has a defect that it is excellent in wear resistance and easily generates cracks. Also, as a belt for paper machines, it is usually high to improve wear resistance. The ability to select polyurethane with hardness It was known that cracks were even more likely to occur in DMTDA cured products and MBOCA cured products. In other words, improvement in wear resistance and prevention of cracks are generally contradictory properties, and it was considered difficult to solve both at once.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2004-52204
- the inventors of the present invention have found that cracks often occur at the bottom of drainage grooves provided in the polyurethane resin layer on the outer peripheral surface of the polyurethane and the edge force thereof, and Since it is necessary to pay attention to the hair cracking property and wear resistance of the belt convex part surface, the resin layered on the outer periphery (felt side) of the base is composed of two or more layers, and the layer that is in direct contact with the substrate (A material excellent in crack resistance is laminated on the intermediate layer (hereinafter referred to as an intermediate layer), and a material having good wear resistance and hair crack resistance is laminated on the outer periphery thereof, and the outermost layer on the outer peripheral surface (hereinafter simply referred to as the outermost layer).
- the drainage groove When the drainage groove is provided on the outer peripheral surface, the drainage groove is cut so that the bottom of the drainage groove is deeper than the boundary surface between the intermediate layer and the outermost layer. It is a crack-resistant material, and the outermost layer is wear-resistant and hair-resistant. It was found that a belt with excellent crack resistance, wear resistance, and hair crack resistance can be obtained.
- the intermediate layer is laminated with DMTDA cured polyurethane, and the outermost layer is selected from a curing agent other than DMTDA, for example, polyurethane cured with MBOCA, epoxy resin, unsaturated polyester resin. Laminated thermosetting resin.
- the present invention relates to a papermaking machine belt in which the outer peripheral surface is laminated on the felt side of the substrate, and includes an intermediate layer whose outer peripheral surface is in contact with the substrate and an outermost layer located on the outer periphery thereof.
- the interlayer is a polyurethane cured with dimethylthiotoluenediamine, and the outermost layer is selected from a cured polyurethane cured with a curing agent other than dimethylthiotoluenediamine, or an epoxy resin or an unsaturated polyester resin.
- the drainage groove is cut on the outer peripheral surface, and the bottom of the drainage groove is cut deeper than the boundary surface between the intermediate layer and the outermost layer. Is a belt for papermaking machines.
- the papermaking machine belt of the present invention has a thermosetting resin selected from a polyurethane hardened with a hardener other than DMTDA, such as MBOCA, an epoxy resin, or an unsaturated polyester resin, as the outermost layer.
- a thermosetting resin selected from a polyurethane hardened with a hardener other than DMTDA, such as MBOCA, an epoxy resin, or an unsaturated polyester resin, as the outermost layer.
- FIG. 1 is a cross-sectional view of the belt 1, in which a shoe-side resin layer 3 is laminated on the inner peripheral surface of the substrate 2 and a felt-side resin layer 4 is laminated on the outer peripheral surface.
- the felt-side resin layer 4 on the outer peripheral surface is composed of an intermediate layer 5 and an outermost layer 6.
- the intermediate layer 5 is in contact with the substrate and the outermost layer 6 is laminated on the outer side.
- the belt is provided with a plurality of drain grooves 7 in the running direction. Since the drainage groove 7 is cut so as to be deeper than the boundary surface 9 between the intermediate layer 5 and the outermost layer 6, the exposed intermediate layer 5 forms the bottom surface 8 of the drainage groove 7 and its edge. Yes.
- the belt outer peripheral surface obtained by such a laminating method and the installation of drainage grooves is composed of an intermediate layer 5 and an outermost layer 6.
- the outermost layer 6 in contact with the felt side in a papermaking machine has an outer layer other than DMTDA.
- a curing agent such as MBOCA cured polyurethane, or thermosetting resin selected from epoxy resin and unsaturated polyester resin.
- the generation of cracks and edge defects on the surface of the convex part is suppressed.
- the drainage groove 7 is cut to a position deeper than the boundary surface 9 between the intermediate layer 5 and the outermost layer 6, the bottom 8 and its edge are DMTDA-cured polyurethane having excellent crack resistance. Hard to occur.
- the intermediate layer 5 is provided with DMTDA-cured polyurethane, and the outermost layer 6 is particularly required to have wear resistance and hair crack resistance. Ru .
- a thermosetting resin selected from polyurethane cured with a curing agent other than DMTDA, epoxy resin, and unsaturated polyester resin is used.
- thermosetting polyurethane is most often used as in the outer peripheral surface.
- the substrate in addition to the force normally used for woven fabrics, those obtained by superimposing the two without being woven, films and knitted fabrics, and those obtained by winding a strip of narrow width in a spiral are used.
- the polyurethane of the intermediate layer reacts with polyol and diisocyanate to form a urethane prepolymer, and then mixed with a curing agent (chain extender), and then applied to a substrate, followed by drying and curing (heating) However, a high molecular weight polyurethane is obtained.
- a curing agent chain extender
- Polyols that are raw materials for producing urethane prepolymers include, for example, polyether polyols such as polyethylene glycol, polypropylene glycol, polytetramethylene glycol, poly force prolatathone ester, polycarbonate, polyethylene adipate, polybutylene adipate, polyhexene A polyester polyol such as adipate is used.
- the diisocyanate used as a raw material for the urethane prepolymer includes tolylene diisocyanate (TDI), diphenolmethane diisocyanate (MDI), m-xylene diisocyanate, naphthalene diisocyanate, etc., usually polyurethane Any known raw material can be used, but TDI and MDI are particularly preferred. MDI has various isomers, but the 4,4 'isomer is most preferred. A mixture of TDI and MDI can also be used.
- the mixing ratio of the two is such that the equivalent ratio of isocyanate group ZOH group is 1.3 / 1 to 4/1, preferably 1.4 / 1 to 1.6 / 1. It is preferable that
- the reaction product contains a large amount of unreacted diisocyanate and a solvent, and is removed by distillation. Prepolymers are obtained as distillation residues.
- Dimethylthiotoluenediamine which is a hardener, has various isomers due to substitution positions of dimethylthio group and amino group, and can be used in the form of a mixture of these isomers. It is available as ETHACURE300 (trade name) manufactured by Albemarle.
- Methylenebisorthochloroaline a hardener
- Iharacamine MT (trade name) manufactured by Ihara Chemical.
- the urethane prepolymer and the curing agent are mixed at a mixing ratio such that the equivalent ratio of the active hydrogen group of the curing agent to the isocyanate group of the urethane prepolymer is 0.9 to 1.10.
- the curing reaction with the curing agent can be performed by a known method.
- the temperature of the curing reaction is usually 20 to 150 ° C, preferably 90 to 140 ° C, and it is preferable to carry out the reaction for at least 30 minutes.
- the urethane prepolymers generally have a low viscosity, and a high molecular weight polyurethane can be obtained by extending the chain with a curing agent (chain extender).
- the multilayer polyurethane of the present invention and the substrate 2 In order to manufacture a belt for a papermaking machine comprising, a belt substrate 2 such as a woven fabric is first impregnated with a mixture of a urethane prepolymer and a curing agent for forming the intermediate layer 5, and then dried and cured (may be heated).
- the outermost layer 6 also includes a mixture of urethane prepolymer and a curing agent, or a thermosetting resin selected by epoxy resin, unsaturated polyester resin, etc. As shown in Fig. 1, polyurethane layer force is applied to the inner peripheral surface of the base 2 and the outer peripheral surface composed of the intermediate layer 5 and the outermost layer 6 is impregnated and laminated on the opposite side. A belt is obtained.
- thermosetting polyurethane When a thermosetting polyurethane is used for the outermost layer 6, the types of the raw material polyol and diisocyanate, their mixing ratio, reaction temperature, etc. are almost the same as those in the intermediate layer 5, but the curing agent A curing agent other than dimethylthiotoluenediamine (DMTDA) is used.
- DMTDA dimethylthiotoluenediamine
- curing agents include aromatic diamines (methylene bis-orthochloroarine (M BOCA), trimethylene bis bis 4-amino benzoate, 1,2-bis- (2 amide phenol thio) ethane, methylene diamine.
- Phosphorus salt-sodium complex trimethylene glycol-di-paraaminobenzoate
- aliphatic polyols 1,4-butanediol, trimethylpropane
- aromatic polyols hydrophilicity-lowering agents
- MBOCA is preferable from the viewpoint of wear resistance, hair crack resistance, and the like.
- the outermost layer 6 is made of other than polyurethane, such as epoxy resin and unsaturated polyester resin.
- Thermosetting rosin can also be used.
- epoxy resin bisphenol A type epoxy resin obtained by condensation of bisphenol A and epichlorohydrin and cured with a curing agent such as aliphatic amine, aromatic amine or acid anhydride is preferred or not.
- Saturated polyester resin includes an unsaturated dicarboxylic acid, darlicol, an unsaturated polyester obtained by force, and a polymerizable vinyl monomer such as styrene, which is cured with a radical initiator such as an organic peroxide. Saturated polyester resin is preferred.
- epoxy resins are suitable particularly when used for the outermost layer 6 as in the present invention.
- An unsaturated polyester resin that is a thermosetting resin is Adeka Resin EP4100 manufactured by Asahi Denki Co., Ltd.
- thermosetting resin bisphenol A type epoxy resin
- Nippona Pica 4516P (trade name).
- a method of laminating polyurethane resin on both surfaces of the substrate 2 is performed by the following steps as shown in FIGS.
- the base 2 is placed between the rolls 20 and 21, and the roll is rotated, while the roll is rotated, the urethane prepolymer that becomes the shear side resin layer 3 on the base 2 and the curing agent dimethylthiotolamine ( DMTDA) is applied to the resin coating nozzle 22 as well, and the shear-side resin layer 3 is dried and cured (may be heated).
- DMTDA dimethylthiotolamine
- the front and back of the substrate 2 are reversed, and as shown in FIG. 3, the urethane that forms the intermediate layer 5 on the other surface of the substrate 2 on which the shoe-side resin layer 3 is laminated.
- a mixture of a prepolymer and a curing agent, DMTDA, is applied and dried and cured (which may be heated) to form the intermediate layer 5.
- a mixture of a urethane prepolymer that is the outermost layer 6 (not shown) and MBOCA, which is a curing agent is applied and dried (cured) (heated).
- the felt-side resin layer 4 composed of the intermediate layer 5 and the outermost layer 6 is sequentially formed.
- thermosetting resin selected from epoxy resin and unsaturated polyester resin is used. If the product is commercially available as an uncured liquid resin, such as a condensate of bisphenol A and epichlorohydrin, or a mixture of an unsaturated polyester and a polymerizable butyl monomer, a curing agent or radical
- the outermost layer can be formed by adding an initiator and heating and curing in the same manner as in the curing of the urethane prepolymer.
- the drainage groove 7 is formed.
- the drainage groove 7 is formed by cutting in the belt running direction using a rotary blade or the like. In the present invention, it is necessary to expose the DMTDA cured polyurethane as the intermediate layer 5 to form the bottom of the drainage groove 7 and the edge thereof, and as shown in FIG. Cutting is performed so as to be deeper than the boundary surface 9 between the intermediate layer 5 and the outermost layer 6.
- the intermediate layer 5 is preferably 40 to 90, particularly 50 to 80, with respect to the total thickness 100 of the felt-side resin layer 4, and the outermost layer. 6 is preferably 60 to 10, in particular 50 to 20. If the thickness of the intermediate layer 5 is too large (if the thickness of the outermost layer 6 is too small), the wear of the outermost layer 6 progresses while the belt is in use, and the time when the intermediate layer 5 is exposed to the belt surface comes earlier.
- the boundary surface 9 between the middle layer 5 and the outermost layer 6 approaches the bottom 8 of the drainage groove 7, so that the bottom 8 and its Unfavorable because cracks near the edge or adjacent groove walls may occur.
- the depth of the drainage groove 7 is 40 to 70, preferably 50 to 60 with respect to the relative ratio 100 as the thickness of the felt-side resin layer 4, and the boundary surface 9 is the drainage groove 7.
- Drain groove 7 is cut so as to form a part of the wall.
- the depth to the bottom 8 of the interface force is preferably 10 to 90, particularly 40 to 60 with respect to the depth 100 of the drainage groove 7. If the depth of the drainage groove 7 is deeper than this, it is not preferable because a force crack may occur near the bottom 8 or its edge or adjacent groove wall. On the contrary, if the depth is smaller than this, the dewatering efficiency of the belt is lowered, which is not preferable.
- the present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples.
- the intermediate layer and The urethane prepolymer, the curing agent and the thermosetting resin used as the material of the outermost layer are as follows.
- Curing agent DMTDA Albemarle "ETHACURE300" (80 parts Z20 parts mixture with 3,5-dimethylthio 2,4-toluenediamine Z3,5-dimethylthio 2,6-toluenediamine)
- Curing agent MBOCA "Iharacamine MT” (Methylenebisorthochlorine dilin) manufactured by Ihara Chemical
- Adeka Resin EP4100 (Asahi Denka Co., Ltd.): Bisphenol A type epoxy resin obtained by condensation of bisphenol A and epichlorohydrin
- DMTDA was prepared as a curing agent, and urethane prepolymer was mixed so that the HZNCO equivalent ratio was 0.97.
- the base 2 is passed between the rolls 20 and 21, and the inner surface (shew side) of the resin 3 is formed on the base 2 from the resin application nozzle 22 while rotating the roll. Apply a mixture of the urethane prepolymer and the curing agent, and dry and cure the side-side resin 3.
- a mixture of urethane prepolymer and intermediate hardener DMTDA to be the intermediate layer 5 is applied to the other side of the substrate 2 and dried and cured.
- the urethane prepolymer and the MBO CA curing agent are mixed so that the HZNCO equivalent ratio is 0.97, and the mixture is applied to the upper force of the intermediate layer 5
- the outermost layer 6 is formed, it is dried and cured. Thereafter, the reaction was carried out at 100 ° C. for 3 hours by the heat source 23 provided above, whereby the inner peripheral surface polyurethane, the intermediate layer polyurethane, and the outermost layer polyurethane were completely cured.
- a belt was obtained in which one layer was laminated on the inner peripheral surface of the substrate 2 and two layers of the intermediate layer 5 and the outermost layer 6 were laminated on the outer peripheral surface.
- the thickness of each layer on the outer peripheral surface is the thickness of the entire felt-side resin layer 4 2. Omm (100 as a relative ratio), while the intermediate layer 5 is 1.5 mm (75) and the outermost layer 6 is 0.5 mm (25 ).
- drainage grooves 7 having a width of 1. Om m and a depth of 1. Omm are formed on the outer peripheral polyurethane surface using a rotary blade. As a result, the layer of DMTD A cured polyurethane as the intermediate layer 5 is exposed and the bottom of the drainage groove is formed.
- the physical properties of the obtained belt sample were measured.
- the measuring method of physical properties is as follows.
- test piece 31 is sandwiched between the rotary roll 33 and the press shoe 34 so that the outer peripheral surface is in contact with the rotary roll 33, and is moved at 36 kg / cm 2 by moving the press shoe in the direction of the rotary roll. Pressed.
- test piece was repeatedly reciprocated, and the number of times the test piece 31 was reciprocated until a crack occurred at the bottom and its edge was measured. Thereafter, the occurrence of hair cracks was observed on the convex surface located between the drainage grooves on the outer peripheral surface of the test piece.
- test piece 31 is attached to the lower part of the press board 35, and the lower surface (surface to be measured) is pressed by the outer peripheral surface coming into contact with the rotary roll 36.
- a friction piece 57 is provided on the outer periphery of the rotating roll 36, and the contact friction with the rotating roll under pressure is performed for 20 minutes at a pressure of 10 kg / cm, the rotating speed of the rotating roll of 100 m / min, and the test piece after the test.
- the thickness reduction amount of 31 was measured.
- Example 1 MBOCA-cured polyurethane was replaced with Adeka Resin EP4100 (bisphenol A type epoxy resin), which is a thermosetting resin, as the outermost layer resin, as in Example 1.
- Adeka Resin EP4100 bisphenol A type epoxy resin
- a belt sample was prepared, and the physical properties of the obtained belt sample were measured. The results are also shown in Table 1.
- a belt sample was produced in the same manner as in Example 1 except that the outer peripheral surface was a single layer of only DMTDA cured polyurethane used as an intermediate layer in Example 1, and the physical properties of the obtained belt sample were measured. The results are also shown in Table 1.
- a belt sample was produced in the same manner as in Example 1 except that the outer peripheral surface was a single layer of only MBOCA cured polyurethane used as the outermost layer in Example 1, and the physical properties of the obtained belt sample were measured. The results are also shown in Table 1.
- the belt of the present invention in which the outer peripheral surface is made up of an intermediate layer of DMTDA cured polyurethane and an outermost layer of MB OCA cured polyurethane has crack resistance, Abrasion and hair crack resistance are improved in a well-balanced manner.
- the belt of Comparative Example 1 in which the outer peripheral surface is a DMTDA-cured polyurethane single layer has good crack resistance, but has insufficient wear resistance and hair crack resistance, while the outer peripheral surface is
- the belt of Comparative Example 2 which is a single MBOCA-cured polyurethane layer has good wear resistance and air crack resistance, resulting in poor crack resistance.
- a belt having a single outer layer polyurethane formed on the outer peripheral surface is used.
- FIG. 1 is a cross-sectional view showing a configuration of a papermaking machine belt of the present invention.
- FIG. 2 shows a belt manufacturing process for a papermaking machine according to the present invention.
- FIG. 3 shows a process for manufacturing a belt for papermaking machine according to the present invention.
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Abstract
This invention provides a belt for a papermaking machine that has excellent properties such as excellent crack resistance, abrasion resistance, and hair crack resistance. The belt for a papermaking machine comprises a substrate and an outer peripheral surface stacked on the substrate in its felt side. The outer peripheral surface comprises an intermediate layer in contact with the substrate and an outermost layer located on the outer periphery of the intermediate layer. The intermediate layer is formed of polyurethane cured with dimethylthiotoluenediamine. The outermost layer is formed of cured polyurethane cured with a curing agent other than dimethylthiotoluenediamine, or a heat curing resin selected from epoxy resins and unsaturated polyester resins. A drainage gutter is provided by cutting on the outer peripheral surface. The bottom of the drainage gutter is cut to a position which is deeper than the boundary surface between the intermediate layer and the outermost layer.
Description
明 細 書 Specification
製紙機械用ベルト Paper machine belt
技術分野 Technical field
[0001] 本発明は、製紙機械用ベルト (以下、単に「ベルト」と記すことがある。)〖こ関する。更 に詳しくは、外周面が多層で構成され、耐クラック性、耐摩耗性、永久歪等の物性に 優れた製紙機械用ベルトである。 The present invention relates to a papermaking machine belt (hereinafter sometimes simply referred to as “belt”). More specifically, it is a papermaking machine belt having a multilayer outer peripheral surface and excellent physical properties such as crack resistance, abrasion resistance, and permanent set.
背景技術 Background art
[0002] 製紙工場にお 、ては各製造工程にお 、て、基体とポリウレタンとからなる製紙機械 用ベルトが使用されている。すなわち、製紙工程のプレスパートにおいては、シユー プレスベルトやトランスファーベルトが使用され、カレンダーパートにおいてはソフト力 レンダーベルトが使用されて 、る。 [0002] In a paper mill, a belt for a paper machine made of a substrate and polyurethane is used in each manufacturing process. In other words, a shrew press belt or a transfer belt is used in the press part of the papermaking process, and a soft force render belt is used in the calendar part.
[0003] これらのベルトは基本的にはベルト全体の強度を発現させるための、織布等からな る基体と、基体の両面または片面に積層されたポリウレタンとから構成されている。こ のようなベルトを製造するには、基体に液状のウレタンプレボリマーを塗布、含浸し、 硬化剤により硬化させるという工程がとられている。 [0003] These belts are basically composed of a base made of woven fabric or the like and polyurethane laminated on both sides or one side of the base in order to develop the strength of the entire belt. In order to manufacture such a belt, a process in which a liquid urethane prepolymer is applied to a substrate, impregnated, and cured with a curing agent is taken.
[0004] 製紙機械用ベルト用のポリウレタンにおいては、製紙工程のプレスパート等の使用 パート、用途により多種のポリウレタンが使い分けされている力 いずれの場合も、口 一ル上を高速で回転し、またロール間やロールとプレスシュ一間の強 、圧力を受ける ので、高度の物性が要求される。特に最近、紙の生産性向上に起因した抄紙機械の 運転速度の高速化や、プレス部の高圧化等に伴い、その使用環境は近年ますます 苛酷なものとなっている。このような高性能の製紙機械において使用されるベルトは 一層高レベルの性能が求められている。一般に製紙機械用ベルトとしては、耐摩耗 性、永久歪、耐クラック性、耐圧縮疲労性などの物性が要求される。 [0004] In polyurethane for papermaking machine belts, the force used by various types of polyurethane depending on the use part and application of the papermaking process, etc. High physical properties are required because of the strength and pressure between rolls and between rolls and press shoes. In recent years, the operating environment has become increasingly harsh in recent years due to the increase in the operating speed of paper machines due to the improvement in paper productivity and the high pressure in the press section. Belts used in such high-performance paper machines are required to have a higher level of performance. Generally, a papermaking machine belt is required to have physical properties such as wear resistance, permanent set, crack resistance, and compression fatigue resistance.
[0005] 前述のとおり、ベルトは基体の両面または片面にポリウレタンが積層され、両面の場 合、外周面はフェルト側に、内周面はプレスロールやプレスシユーに接する。そのうち フェルト側に積層される外周面は過酷な加圧を受け、しカゝも脱水効率を上げるために 、外周面には通常排水溝が設けられるので、この排水溝の底部とその縁部力 クラッ
クが発生しやすい。また、隣接する排水溝間に位置する凸部表面は摩耗し易いとい う問題があった。したがって、ベルトを構成するポリウレタンのうち、特に外周面として 使用されるポリウレタンについて、耐クラック性と耐磨耗性の向上の要求が大きい。 [0005] As described above, the belt is formed by laminating polyurethane on both surfaces or one surface of the base. In both surfaces, the outer peripheral surface is in contact with the felt side, and the inner peripheral surface is in contact with a press roll or press shoe. Among them, the outer peripheral surface laminated on the felt side is subjected to severe pressure, and the drainage is usually provided with a drainage groove in order to increase the dewatering efficiency, so the bottom of the drainage groove and its edge force Crap This is easy to generate. Further, there is a problem that the surface of the convex portion located between adjacent drain grooves is easily worn. Therefore, there is a great demand for improvement in crack resistance and wear resistance among polyurethanes constituting the belt, particularly polyurethane used as the outer peripheral surface.
[0006] ポリウレタンの製造法は、末端に 2個のイソシァネート基を有するジイソシァネートと 末端に複数の水酸基を有するポリオールとを重付加反応させて、先ず末端にイソシ ァネート基を有するウレタンプレボリマーを製造する。力べして得られた液状のウレタ ンプレポリマーは、低分子であり、これに硬化剤(鎖延長剤)を加えて加熱することに より、硬化し、固体状の高分子量ポリウレタンが得られる。 [0006] In the polyurethane production method, a diisocyanate having two isocyanate groups at the terminal and a polyol having a plurality of hydroxyl groups at the terminal are subjected to a polyaddition reaction to first produce a urethane prepolymer having an isocyanate group at the terminal. . The liquid urethane prepolymer obtained by force is low in molecular weight, and is cured by adding a curing agent (chain extender) thereto and heating to obtain a solid high molecular weight polyurethane.
[0007] ポリウレタンの性状に大きく影響するものとして高分子量ポリウレタン製造のための 上記硬化剤の選択が重要である。製紙用ポリウレタンの硬化剤として代表的なものは 、ジメチルチオトルエンジァミン(DMTDA)およびメチレンビスオルソクロロア-リン (M BOCA)であり、どちらも多く使用されている。そのうち MBOCAは耐摩耗性に優れ、 D MTDAは耐クラック性にぉ 、て特に優れて 、る。耐クラック性は製紙用ベルトにとって 重要な性質であり、耐クラック性を重要視する用途にぉ 、ては DMTDAを使用するこ とが多くなつている。 [0007] The selection of the curing agent for the production of high molecular weight polyurethane is important as it greatly affects the properties of polyurethane. Typical examples of curing agents for papermaking polyurethanes are dimethylthiotoluenediamine (DMTDA) and methylenebisorthochloroaline (M BOCA), both of which are frequently used. Among them, MBOCA is excellent in wear resistance, and D MTDA is particularly excellent in crack resistance. Crack resistance is an important property for papermaking belts, and DMTDA is often used for applications where crack resistance is important.
[0008] 例えば、特許文献 1にお 、て、製紙機械用ベルトのポリウレタン硬化剤に DMTDAを 使用すると、耐クラック性、耐磨耗性、耐永久歪性のバランスが取れる製紙機械用べ ルトが提供されている。 [0008] For example, in Patent Document 1, when DMTDA is used as a polyurethane curing agent for a papermaking machine belt, a papermaking machine belt that balances crack resistance, wear resistance, and permanent distortion resistance is obtained. Is provided.
[0009] しかし、ベルトに生じるクラックとして強 、外力による通常のクラックの他に、隣接す る排水溝間に位置する凸部表面に生ずる小さな髪の毛状のクラック、いわゆるヘアク ラックがあり、 DMTDA硬化物は、通常のクラック発生防止には優れている力 ヘアク ラックが発生しやすいという欠点があった。そしてこのヘアクラック力 ベルト凸部表面 に一様に発生するようになると、表面粗さが増す結果、摩擦磨耗が増大するといつた 問題を生じていた。更に、製紙用ベルトは通常搾水した水分を排出するために、外 周面に排水溝を設けるが、隣接する排水溝間に位置する凸部表面の縁端部が欠損 する現象がある力 この現象も DMTDA硬化物の方が起こり易いという傾向がある。 [0009] However, there is a strong crack as a crack generated in the belt, and in addition to a normal crack due to an external force, there is a small hair-like crack generated on the surface of a convex portion located between adjacent drain grooves, a so-called hair crack. However, there is a defect that hair cracks are easily generated. When this hair crack force is evenly generated on the belt convex surface, the surface roughness increases, and as a result, frictional wear increases. Furthermore, the papermaking belt is usually provided with drainage grooves on the outer peripheral surface to discharge the squeezed water, but there is a phenomenon that the edge of the convex surface located between adjacent drainage grooves may be lost. The phenomenon tends to occur more easily with DMTDA cured products.
[0010] 一方 MBOCA硬化物は耐摩耗性に優れている力 クラックが発生しやすい欠点を有 している。また製紙機械用ベルトとして特に耐摩耗性を向上させるために、通常は高
硬度のポリウレタンを選択する力 DMTDA硬化物や MBOCA硬化物でも一層クラック が発生しやすくなることが知られていた。つまり一般に耐摩耗性の向上と、クラック防 止とは相反する性質であり、両者を一挙に解決することは困難と考えられていた。 [0010] On the other hand, a cured product of MBOCA has a defect that it is excellent in wear resistance and easily generates cracks. Also, as a belt for paper machines, it is usually high to improve wear resistance. The ability to select polyurethane with hardness It was known that cracks were even more likely to occur in DMTDA cured products and MBOCA cured products. In other words, improvement in wear resistance and prevention of cracks are generally contradictory properties, and it was considered difficult to solve both at once.
[0011] 特許文献 1 :特開 2004— 52204号公報 Patent Document 1: Japanese Patent Application Laid-Open No. 2004-52204
発明の開示 Disclosure of the invention
発明が解決しょうとする課題 Problems to be solved by the invention
[0012] 本発明の発明者はこの点について検討した結果、クラックの発生はポリウレタン外 周面のポリウレタン榭脂層に設けた排水溝の底部とその縁部力 発生することが多 ヽ こと、そしてベルト凸部表面のヘアクラック性と磨耗性に留意すべきである事から、基 体の外周 (フェルト側)に積層する榭脂を 2層以上の複数層とし、基体と直接接触す る層(以下中間層と呼ぶ)には耐クラック性に優れた材料を積層し、その外周に、耐 摩耗性と耐ヘアクラック性の良い材料を積層して外周面の最外層(以下、単に最外 層と呼ぶ)とし、かつ外周面に排水溝を設ける際に、その底部が上記中間層と最外層 の境界面より深くなるように排水溝を切削することにより、排水溝底部とその縁部は耐 クラック性の材料となり、最外層は耐摩耗性と耐ヘアクラック性の良い材料で形成さ れるから、これ〖こより耐クラック性、耐摩耗性、耐ヘアクラック性のいずれもが優れたべ ルトが得られることを見出した。 As a result of studying this point, the inventors of the present invention have found that cracks often occur at the bottom of drainage grooves provided in the polyurethane resin layer on the outer peripheral surface of the polyurethane and the edge force thereof, and Since it is necessary to pay attention to the hair cracking property and wear resistance of the belt convex part surface, the resin layered on the outer periphery (felt side) of the base is composed of two or more layers, and the layer that is in direct contact with the substrate ( A material excellent in crack resistance is laminated on the intermediate layer (hereinafter referred to as an intermediate layer), and a material having good wear resistance and hair crack resistance is laminated on the outer periphery thereof, and the outermost layer on the outer peripheral surface (hereinafter simply referred to as the outermost layer). When the drainage groove is provided on the outer peripheral surface, the drainage groove is cut so that the bottom of the drainage groove is deeper than the boundary surface between the intermediate layer and the outermost layer. It is a crack-resistant material, and the outermost layer is wear-resistant and hair-resistant. It was found that a belt with excellent crack resistance, wear resistance, and hair crack resistance can be obtained.
[0013] 具体的には中間層には DMTDA硬化ポリウレタンを積層し、最外層には DMTDA以 外の硬化剤、例えば MBOCAにより硬化されたポリウレタン、またはエポキシ榭脂、不 飽和ポリエステル榭脂から選ばれた熱硬化性榭脂を積層する。 [0013] Specifically, the intermediate layer is laminated with DMTDA cured polyurethane, and the outermost layer is selected from a curing agent other than DMTDA, for example, polyurethane cured with MBOCA, epoxy resin, unsaturated polyester resin. Laminated thermosetting resin.
[0014] すなわち本発明は、基体のフェルト側に外周面が積層された製紙機械用ベルト〖こ おいて、外周面が基体に接する中間層と、その外周に位置する最外層とを含み、中 間層がジメチルチオトルエンジァミンにより硬化されたポリウレタンであり、最外層がジ メチルチオトルエンジァミン以外の硬化剤により硬化された硬化ポリウレタン、または エポキシ榭脂、不飽和ポリエステル榭脂から選ばれた熱硬化性榭脂であり、かつ外 周面には排水溝が切削されており、該排水溝の底部が上記中間層と最外層の境界 面より深!ヽ位置まで切削されて ヽることを特徴とする製紙機械用ベルトである。 That is, the present invention relates to a papermaking machine belt in which the outer peripheral surface is laminated on the felt side of the substrate, and includes an intermediate layer whose outer peripheral surface is in contact with the substrate and an outermost layer located on the outer periphery thereof. The interlayer is a polyurethane cured with dimethylthiotoluenediamine, and the outermost layer is selected from a cured polyurethane cured with a curing agent other than dimethylthiotoluenediamine, or an epoxy resin or an unsaturated polyester resin. The drainage groove is cut on the outer peripheral surface, and the bottom of the drainage groove is cut deeper than the boundary surface between the intermediate layer and the outermost layer. Is a belt for papermaking machines.
発明の効果
[0015] 本発明の製紙機械用ベルトは、最外層に DMTDA以外の硬化剤、例えば MBOCA により硬化されたポリウレタン、またはエポキシ榭脂、不飽和ポリエステル榭脂から選 ばれた熱硬化性榭脂を配置したことにより、耐摩耗性、耐ヘアクラック性が優れる。ま た排水溝が上記 2層の境界面より深い位置まで切削されて、中間層の DMTDA硬化 ポリウレタンが排水溝の底部とその縁部で露出しているため、底部とその縁部力もの クラックは発生しにくぐ一方隣接する排水溝間に位置する凸部表面は最外層の材 料であるためその縁端部の欠損も防止できる。このようにして、耐クラック性、耐摩耗 性、耐ヘアクラック性のすべての点で、従来使用されているものより優れた製紙機械 用ベルトが提供される。 The invention's effect [0015] The papermaking machine belt of the present invention has a thermosetting resin selected from a polyurethane hardened with a hardener other than DMTDA, such as MBOCA, an epoxy resin, or an unsaturated polyester resin, as the outermost layer. As a result, the wear resistance and hair crack resistance are excellent. In addition, the drainage groove is cut to a position deeper than the boundary surface between the two layers, and the DMTDA-cured polyurethane in the intermediate layer is exposed at the bottom and the edge of the drainage groove. The convex surface located between the adjacent drainage channels that are difficult to generate is the outermost layer material, so it is possible to prevent the edge from being damaged. In this manner, a papermaking machine belt superior to those conventionally used in all aspects of crack resistance, wear resistance, and hair crack resistance is provided.
発明を実施するための最良の形態 BEST MODE FOR CARRYING OUT THE INVENTION
[0016] 本発明の製紙機械用ベルトの構造を図 1により説明する。図 1はベルト 1の横断面 図であり、基体 2の内周面にシユー側榭脂層 3、外周面にフェルト側榭脂層 4が積層 されている。 The structure of the papermaking machine belt of the present invention will be described with reference to FIG. FIG. 1 is a cross-sectional view of the belt 1, in which a shoe-side resin layer 3 is laminated on the inner peripheral surface of the substrate 2 and a felt-side resin layer 4 is laminated on the outer peripheral surface.
外周面のフェルト側榭脂層 4は中間層 5と最外層 6とからなり、中間層 5は基体に接し 、その外側に最外層 6が積層されている。ベルトには走行方向に複数の排水溝 7が 設けられている。排水溝 7は中間層 5と最外層 6との境界面 9よりも深い位置となるよう に切削されているので、露出した中間層 5が排水溝 7の底面 8とその縁部を形成して いる。 The felt-side resin layer 4 on the outer peripheral surface is composed of an intermediate layer 5 and an outermost layer 6. The intermediate layer 5 is in contact with the substrate and the outermost layer 6 is laminated on the outer side. The belt is provided with a plurality of drain grooves 7 in the running direction. Since the drainage groove 7 is cut so as to be deeper than the boundary surface 9 between the intermediate layer 5 and the outermost layer 6, the exposed intermediate layer 5 forms the bottom surface 8 of the drainage groove 7 and its edge. Yes.
[0017] このような積層方法および排水溝の設置により得られたベルト外周面は、中間層 5と 最外層 6とからなり、製紙機械においてフェルト側に接する最外層 6には、 DMTDA以 外の硬化剤で硬化したポリウレタン、例えば MBOCA硬化ポリウレタン、またはェポキ シ榭脂、不飽和ポリエステル榭脂から選ばれた熱硬化性榭脂であるため、抄紙機械 の高速、高圧運転を行なっても磨耗やヘアクラック及び凸部表面の縁端部欠損の発 生は抑制される。一方排水溝 7は中間層 5と最外層 6との境界面 9よりも深い位置まで 切削されているので、底部 8とその縁部は耐クラック性に優れる DMTDA硬化ポリウレ タンであるため、クラックは発生しにくい。 [0017] The belt outer peripheral surface obtained by such a laminating method and the installation of drainage grooves is composed of an intermediate layer 5 and an outermost layer 6. The outermost layer 6 in contact with the felt side in a papermaking machine has an outer layer other than DMTDA. Polyurethane cured with a curing agent, such as MBOCA cured polyurethane, or thermosetting resin selected from epoxy resin and unsaturated polyester resin. The generation of cracks and edge defects on the surface of the convex part is suppressed. On the other hand, since the drainage groove 7 is cut to a position deeper than the boundary surface 9 between the intermediate layer 5 and the outermost layer 6, the bottom 8 and its edge are DMTDA-cured polyurethane having excellent crack resistance. Hard to occur.
[0018] 本発明のベルトの外周であるフェルト側榭脂層 4のうち、中間層 5は DMTDA硬化ポ リウレタンが配置され、最外層 6には、特に耐摩耗性、耐ヘアクラック性が要求される
。最外層 6の材料としては、 DMTDA以外の硬化剤で硬化したポリウレタン、またはェ ポキシ榭脂、不飽和ポリエステル榭脂から選ばれた熱硬化性榭脂が用いられる。 [0018] Of the felt-side resin layer 4 that is the outer periphery of the belt of the present invention, the intermediate layer 5 is provided with DMTDA-cured polyurethane, and the outermost layer 6 is particularly required to have wear resistance and hair crack resistance. Ru . As the material of the outermost layer 6, a thermosetting resin selected from polyurethane cured with a curing agent other than DMTDA, epoxy resin, and unsaturated polyester resin is used.
[0019] 製紙機械用ベルトは上記基体 2の外周面を構成するフェルト側榭脂層 4の他に、通 常基体 2のシユー側にもシユー側榭脂層 3が積層される。シユー側榭脂層 3としては 外周面と同様、熱硬化性ポリウレタンが最も多く用いられる。 In the papermaking machine belt, in addition to the felt-side resin layer 4 constituting the outer peripheral surface of the substrate 2, a shoe-side resin layer 3 is also laminated on the normal side of the substrate 2. As the outer side resin layer 3, the thermosetting polyurethane is most often used as in the outer peripheral surface.
[0020] また基体としては、通常織布が用いられる力 このほか両者を織成せずに重ね合わ せたもの、フィルムや編物、狭い幅の帯状体をスパイラルに巻いたもの等が用いられ る。 [0020] Further, as the substrate, in addition to the force normally used for woven fabrics, those obtained by superimposing the two without being woven, films and knitted fabrics, and those obtained by winding a strip of narrow width in a spiral are used.
[0021] 中間層のポリウレタンはポリオールとジイソシァネートと反応してウレタンプレポリマ 一を生成させてから、これに硬化剤 (鎖延長剤)を混合し、その後に基体に塗布し、 乾燥 ·硬化 (加熱してもよ 、)して高分子量のポリウレタンを得る。 [0021] The polyurethane of the intermediate layer reacts with polyol and diisocyanate to form a urethane prepolymer, and then mixed with a curing agent (chain extender), and then applied to a substrate, followed by drying and curing (heating) However, a high molecular weight polyurethane is obtained.
[0022] ウレタンプレポリマーを生成させる原料であるポリオールとして、例えばポリエチレン グリコール、ポリプロピレングリコール、ポリテトラメチレングリコール等のポリエーテル ポリオール、ポリ力プロラタトンエステル、ポリカーボネート、ポリエチレンアジペート、 ポリブチレンアジペート、ポリへキセンアジペート等のポリエステルポリオール等が用 いられる。 [0022] Polyols that are raw materials for producing urethane prepolymers include, for example, polyether polyols such as polyethylene glycol, polypropylene glycol, polytetramethylene glycol, poly force prolatathone ester, polycarbonate, polyethylene adipate, polybutylene adipate, polyhexene A polyester polyol such as adipate is used.
[0023] ウレタンプレポリマー原料のジイソシァネートとしては、トリレンジイソシァネート(TDI )、ジフエ-ノレメタンジイソシァネート(MDI)、 m-キシレンジイソシァネート、ナフタレ ンジイソシァネート等、通常ポリウレタンの原料として公知のものがいずれも使用でき るが特に TDIおよび MDIが好ましい。 MDIは、各種の異性体が存在するが、 4,4'異 性体が最も好まし 、。また TDIと MDIの混合物を用いることもできる。 [0023] The diisocyanate used as a raw material for the urethane prepolymer includes tolylene diisocyanate (TDI), diphenolmethane diisocyanate (MDI), m-xylene diisocyanate, naphthalene diisocyanate, etc., usually polyurethane Any known raw material can be used, but TDI and MDI are particularly preferred. MDI has various isomers, but the 4,4 'isomer is most preferred. A mixture of TDI and MDI can also be used.
[0024] ポリオールとジイソシァネートとから、ウレタンプレポリマーを製造する反応において 、両者の混合比は、イソシァネート基 ZOH基当量比が 1.3/1〜4/1、好ましくは 1.4/1 〜1.6/1の範囲となるようにするのが好ましい。 [0024] In a reaction for producing a urethane prepolymer from a polyol and a diisocyanate, the mixing ratio of the two is such that the equivalent ratio of isocyanate group ZOH group is 1.3 / 1 to 4/1, preferably 1.4 / 1 to 1.6 / 1. It is preferable that
[0025] 反応生成物は多量の未反応ジイソシァネートと溶媒を含んでいるので、蒸留により 除去する。蒸留残渣としてプレボリマーが得られる。 [0025] The reaction product contains a large amount of unreacted diisocyanate and a solvent, and is removed by distillation. Prepolymers are obtained as distillation residues.
[0026] 硬ィ匕剤であるジメチルチオトルエンジァミンはジメチルチオ基及びアミノ基の置換位 置による各種異性体が存在するが、これら異性体混合物の形で使用することができ、
米国アルべマール社製の ETHACURE300(商品名)として入手可能である。 [0026] Dimethylthiotoluenediamine, which is a hardener, has various isomers due to substitution positions of dimethylthio group and amino group, and can be used in the form of a mixture of these isomers. It is available as ETHACURE300 (trade name) manufactured by Albemarle.
[0027] 硬ィ匕剤であるメチレンビスオルソクロロア-リンは、ィハラケミカル社製のィハラキュ ァミン MT (商品名)として入手可能である。 [0027] Methylenebisorthochloroaline, a hardener, is available as Iharacamine MT (trade name) manufactured by Ihara Chemical.
[0028] ウレタンプレポリマーと硬化剤とは、硬化剤の活性水素基とウレタンプレポリマーの イソシァネート基との当量比が 0.9〜1.10となるような混合比で混合することが望まし い。 [0028] It is desirable that the urethane prepolymer and the curing agent are mixed at a mixing ratio such that the equivalent ratio of the active hydrogen group of the curing agent to the isocyanate group of the urethane prepolymer is 0.9 to 1.10.
[0029] 硬化剤による硬化反応は公知の方法で行なうことができる。硬化反応の温度は通 常 20〜150°C、好ましくは 90〜140°Cであり、少なくとも 30分以上反応させるのが好ま しい。 [0029] The curing reaction with the curing agent can be performed by a known method. The temperature of the curing reaction is usually 20 to 150 ° C, preferably 90 to 140 ° C, and it is preferable to carry out the reaction for at least 30 minutes.
[0030] 前記のウレタンプレボリマーは一般には低粘度であり、これを硬化剤(鎖延長剤)に より鎖延長することによって高分子量のポリウレタンが得られるが、本発明の多層ポリ ウレタンと基体 2からなる製紙機械用ベルトを製造するに当たっては、先ず中間層 5を 形成するウレタンプレボリマーと硬化剤との混合物を織布等のベルト基体 2に含浸さ せ、乾燥'硬化 (加熱してもよい)させて中間層 5を形成し、次いで最外層 6にもウレタ ンプレポリマーと硬化剤との混合物、或いはエポキシ榭脂、不飽和ポリエステル榭脂 カゝら選ばれた熱硬化性榭脂を、中間層 5の上部に塗布して、図 1に示すような、基体 2の内周面にポリウレタン層力 またその反対側には中間層 5と最外層 6からなる外周 面が含浸、積層されたベルトが得られる。 [0030] The urethane prepolymers generally have a low viscosity, and a high molecular weight polyurethane can be obtained by extending the chain with a curing agent (chain extender). The multilayer polyurethane of the present invention and the substrate 2 In order to manufacture a belt for a papermaking machine comprising, a belt substrate 2 such as a woven fabric is first impregnated with a mixture of a urethane prepolymer and a curing agent for forming the intermediate layer 5, and then dried and cured (may be heated). ) To form an intermediate layer 5, and then the outermost layer 6 also includes a mixture of urethane prepolymer and a curing agent, or a thermosetting resin selected by epoxy resin, unsaturated polyester resin, etc. As shown in Fig. 1, polyurethane layer force is applied to the inner peripheral surface of the base 2 and the outer peripheral surface composed of the intermediate layer 5 and the outermost layer 6 is impregnated and laminated on the opposite side. A belt is obtained.
[0031] 最外層 6に熱硬化性ポリウレタンを用いる場合、その原料のポリオールとジイソシァ ネートの種類と、それらの混合比、反応温度等は、中間層 5におけるものとほぼ同様 であるが、硬化剤はジメチルチオトルエンジァミン(DMTDA)以外の硬化剤が用いら れる。そのような硬化剤としては、芳香族ジァミン (メチレンビスオルソクロロア-リン (M BOCA)、トリメチレン一ビス一 4ァミノべンゾエート、 1,2-ビス- (2ァミノフエ-ルチオ)ェ タン、メチレンジァ-リン塩ィ匕ナトリウム錯体、トリメチレングリコール-ジ-パラァミノベン ゾエート)、脂肪族ポリオール (1,4-ブタンジオール、トリメチルプロパン)、芳香族ポリ オール (ハイド口キノンキノンジェチロールエーテル)等が挙げられる力 特に、耐摩 耗性、耐ヘアクラック性等の点から、 MBOCAが好ましい。 [0031] When a thermosetting polyurethane is used for the outermost layer 6, the types of the raw material polyol and diisocyanate, their mixing ratio, reaction temperature, etc. are almost the same as those in the intermediate layer 5, but the curing agent A curing agent other than dimethylthiotoluenediamine (DMTDA) is used. Such curing agents include aromatic diamines (methylene bis-orthochloroarine (M BOCA), trimethylene bis bis 4-amino benzoate, 1,2-bis- (2 amide phenol thio) ethane, methylene diamine. Phosphorus salt-sodium complex, trimethylene glycol-di-paraaminobenzoate), aliphatic polyols (1,4-butanediol, trimethylpropane), aromatic polyols (hydride quinone quinone jetolol ether) In particular, MBOCA is preferable from the viewpoint of wear resistance, hair crack resistance, and the like.
[0032] 最外層 6にはエポキシ榭脂、不飽和ポリエステル榭脂のような、ポリウレタン以外の
熱硬化性榭脂を用いることもできる。エポキシ榭脂としては、ビスフエノール Aとェピク ロロヒドリンとの縮合により得られ、脂肪族ァミン、芳香族ァミン、酸無水物等の硬化剤 により硬化させるビスフエノール A型エポキシ榭脂が好ましぐまた不飽和ポリエステ ル榭脂としては、不飽和ジカルボン酸とダリコールと力 得られる不飽和ポリエステル と、スチレン等の重合性ビニルモノマーとの混合物を有機過酸ィ匕物のようなラジカル 開始剤により硬化させる不飽和ポリエステル榭脂が好ましい。上記の熱硬化性榭脂 の中では特に本発明のように最外層 6に使用する場合には、エポキシ榭脂が好適で ある。 [0032] The outermost layer 6 is made of other than polyurethane, such as epoxy resin and unsaturated polyester resin. Thermosetting rosin can also be used. As the epoxy resin, bisphenol A type epoxy resin obtained by condensation of bisphenol A and epichlorohydrin and cured with a curing agent such as aliphatic amine, aromatic amine or acid anhydride is preferred or not. Saturated polyester resin includes an unsaturated dicarboxylic acid, darlicol, an unsaturated polyester obtained by force, and a polymerizable vinyl monomer such as styrene, which is cured with a radical initiator such as an organic peroxide. Saturated polyester resin is preferred. Among the above-described thermosetting resins, epoxy resins are suitable particularly when used for the outermost layer 6 as in the present invention.
[0033] 熱硬化性榭脂である不飽和ポリエステル榭脂は、旭電ィ匕社製のアデカレジン EP4100 [0033] An unsaturated polyester resin that is a thermosetting resin is Adeka Resin EP4100 manufactured by Asahi Denki Co., Ltd.
(商品名)として入手可能である。 It is available as (trade name).
[0034] 別の熱硬化性榭脂であるビスフエノール A型エポキシ榭脂は、 日本ュピカ社製のュ ピカ 4516P (商品名)として入手可能である。 [0034] Another thermosetting resin, bisphenol A type epoxy resin, is available as Nippona Pica 4516P (trade name).
[0035] 基体 2の両面にポリウレタン榭脂を積層させる方法は、例えば図 2、 3に示すように、 下記の工程により行なわれる。 A method of laminating polyurethane resin on both surfaces of the substrate 2 is performed by the following steps as shown in FIGS.
[0036] (工程 1) [0036] (Process 1)
図 2に示すようにロール 20、 21間に基体 2を掛け渡し、ロールを回転させながら、基体 2上にシユー側榭脂層 3となるウレタンプレボリマーと、硬化剤であるジメチルチオトル ェンジァミン (DMTDA)との混合物を榭脂塗布ノズル 22力も塗布し、シユー側榭脂層 3を乾燥'硬化 (加熱してもよい)させる。 As shown in FIG. 2, the base 2 is placed between the rolls 20 and 21, and the roll is rotated, while the roll is rotated, the urethane prepolymer that becomes the shear side resin layer 3 on the base 2 and the curing agent dimethylthiotolamine ( DMTDA) is applied to the resin coating nozzle 22 as well, and the shear-side resin layer 3 is dried and cured (may be heated).
[0037] (工程 2) [0037] (Process 2)
シユー側榭脂層 3を乾燥'硬化後に基体 2の表裏を反転させ、図 3に示すように、シュ 一側榭脂層 3が積層された基体 2の他面上に中間層 5となるウレタンプレボリマーと 硬化剤である DMTDAとの混合物を塗布し、乾燥 ·硬化 (加熱してもよ 、)させて中間 層 5を形成させる。更に、図 3に示される中間層 5の上部から、同様にして最外層 6 ( 図示せず)となるウレタンプレボリマーと硬化剤である MBOCAとの混合物を塗布し、 乾燥'硬化 (加熱してもよい)させて中間層 5と最外層 6からなるフェルト側榭脂層 4が 順次形成される。 After drying / curing the shear-side resin layer 3, the front and back of the substrate 2 are reversed, and as shown in FIG. 3, the urethane that forms the intermediate layer 5 on the other surface of the substrate 2 on which the shoe-side resin layer 3 is laminated. A mixture of a prepolymer and a curing agent, DMTDA, is applied and dried and cured (which may be heated) to form the intermediate layer 5. Further, from the upper part of the intermediate layer 5 shown in FIG. 3, a mixture of a urethane prepolymer that is the outermost layer 6 (not shown) and MBOCA, which is a curing agent, is applied and dried (cured) (heated). The felt-side resin layer 4 composed of the intermediate layer 5 and the outermost layer 6 is sequentially formed.
[0038] 最外層 6をエポキシ榭脂、不飽和ポリエステル榭脂から選ばれた熱硬化性榭脂を用
いる場合、ビスフエノール Aとェピクロロヒドリンとの縮合物、不飽和ポリエステルと重 合性ビュルモノマーとの混合物等、未硬化の液状榭脂として市販されて ヽるものに、 硬化剤またはラジカル開始剤を添加し、上記ウレタンプレボリマーの硬化と同様に加 熱 '硬化して最外層を形成させることができる。 [0038] For the outermost layer 6, a thermosetting resin selected from epoxy resin and unsaturated polyester resin is used. If the product is commercially available as an uncured liquid resin, such as a condensate of bisphenol A and epichlorohydrin, or a mixture of an unsaturated polyester and a polymerizable butyl monomer, a curing agent or radical The outermost layer can be formed by adding an initiator and heating and curing in the same manner as in the curing of the urethane prepolymer.
[0039] カゝくして基体 2の外周面として、フェルト側榭脂層 4が形成された後、排水溝 7を形成 させる。排水溝 7の形成は回転刃等を用いて、ベルトの走行方向に切削することによ り行なわれる。本発明においては、中間層 5である DMTDA硬化ポリウレタンが露出し て排水溝 7の底部とその縁部を形成することが必要であり、そのため図 1に示すように 、排水溝 7の深さが中間層 5と最外層 6の境界面 9よりも深い位置となるように切削を 行なう。 [0039] After the felt-side resin layer 4 is formed on the outer peripheral surface of the substrate 2, the drainage groove 7 is formed. The drainage groove 7 is formed by cutting in the belt running direction using a rotary blade or the like. In the present invention, it is necessary to expose the DMTDA cured polyurethane as the intermediate layer 5 to form the bottom of the drainage groove 7 and the edge thereof, and as shown in FIG. Cutting is performed so as to be deeper than the boundary surface 9 between the intermediate layer 5 and the outermost layer 6.
[0040] 外周面の各層の厚みについて相対比で示すと、フェルト側榭脂層 4全体の厚み 10 0に対して、中間層 5が好ましくは 40〜90、特に 50〜80であり、最外層 6は好ましく は 60〜10、特に 50〜20である。中間層 5の厚みが大きすぎると(最外層 6の厚みが 小さ過ぎると)、ベルト使用中に最外層 6の磨耗が進んだ場合、中間層 5がベルト表 面に露出する時期が早く来る。逆に中間層 5の厚みが小さ過ぎると (最外層 6の厚み が大きすぎると)、中間層 5と最外層 6との境界面 9が排水溝 7の底部 8に近づくため、 底部 8やその縁部付近または隣接する溝壁部力 クラックが発生することがあり、好ま しくない。 [0040] In terms of the relative thickness of each layer on the outer peripheral surface, the intermediate layer 5 is preferably 40 to 90, particularly 50 to 80, with respect to the total thickness 100 of the felt-side resin layer 4, and the outermost layer. 6 is preferably 60 to 10, in particular 50 to 20. If the thickness of the intermediate layer 5 is too large (if the thickness of the outermost layer 6 is too small), the wear of the outermost layer 6 progresses while the belt is in use, and the time when the intermediate layer 5 is exposed to the belt surface comes earlier. Conversely, if the thickness of the middle layer 5 is too small (if the thickness of the outermost layer 6 is too large), the boundary surface 9 between the middle layer 5 and the outermost layer 6 approaches the bottom 8 of the drainage groove 7, so that the bottom 8 and its Unfavorable because cracks near the edge or adjacent groove walls may occur.
[0041] 本発明においては、排水溝 7の深さはフェルト側榭脂層 4の厚みとして相対比 100に 対して、 40〜70、好ましくは 50〜60であり、境界面 9が排水溝 7の壁面の一部を形 成するよう排水溝 7を切削する。境界面力もの底部 8への深さは、排水溝 7の深さ 100 に対して好ましくは 10〜90、特に 40〜60である。これより排水溝 7の深さが深いと、 底部 8やその縁部付近または隣接する溝壁部力 クラックが発生することがあり、好ま しくない。また、逆にこれより深さが浅いと、ベルトの脱水効率が下がって好ましくない 実施例 [0041] In the present invention, the depth of the drainage groove 7 is 40 to 70, preferably 50 to 60 with respect to the relative ratio 100 as the thickness of the felt-side resin layer 4, and the boundary surface 9 is the drainage groove 7. Drain groove 7 is cut so as to form a part of the wall. The depth to the bottom 8 of the interface force is preferably 10 to 90, particularly 40 to 60 with respect to the depth 100 of the drainage groove 7. If the depth of the drainage groove 7 is deeper than this, it is not preferable because a force crack may occur near the bottom 8 or its edge or adjacent groove wall. On the contrary, if the depth is smaller than this, the dewatering efficiency of the belt is lowered, which is not preferable.
[0042] 以下実施例を挙げて本発明を具体的に説明するが、本発明は、これら実施例によ つて何ら制限されるものではない。なお各実施例および比較例において、中間層及
び最外層の材料として用いたウレタンプレボリマー、硬化剤及び熱硬化性榭脂は下 記のとおりである。 [0042] The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples. In each example and comparative example, the intermediate layer and The urethane prepolymer, the curing agent and the thermosetting resin used as the material of the outermost layer are as follows.
(1)ウレタンプレポリマー: (1) Urethane prepolymer:
"タケネート L2395 (武田製薬社製) "を使用 Uses "Takenate L2395 (Takeda Pharmaceutical)"
(2)硬化剤 DMTDA:アルべマール社製" ETHACURE300"(3,5-ジメチルチオ 2,4-トル ェンジァミン Z3,5-ジメチルチオ 2,6-トルエンジァミンとの 80部 Z20部混合物) (2) Curing agent DMTDA: Albemarle "ETHACURE300" (80 parts Z20 parts mixture with 3,5-dimethylthio 2,4-toluenediamine Z3,5-dimethylthio 2,6-toluenediamine)
(3)硬化剤 MBOCA:ィハラケミカル社製"ィハラキュアミン MT" (メチレンビスオルソクロ ロア二リン) (3) Curing agent MBOCA: "Iharacamine MT" (Methylenebisorthochlorine dilin) manufactured by Ihara Chemical
(4)熱硬化性榭脂: (4) Thermosetting resin:
,,アデカレジン EP4100" (旭電化社製):ビスフェノール Aとェピクロロヒドリンの縮合に より得られたビスフエノール A型エポキシ榭脂 Adeka Resin EP4100 "(Asahi Denka Co., Ltd.): Bisphenol A type epoxy resin obtained by condensation of bisphenol A and epichlorohydrin
[0043] [実施例 1] [0043] [Example 1]
(内周面ポリウレタンの積層) (Lamination of inner surface polyurethane)
硬化剤として DMTDAを用意し、ウレタンプレポリマーとを、 HZNCO当量比が 0.97と なるように混合した。 DMTDA was prepared as a curing agent, and urethane prepolymer was mixed so that the HZNCO equivalent ratio was 0.97.
(プレボリマー塗布) (Prebomer application)
図 2に示すように、ロール 20、 21間に基体 2を掛け渡し、ロールを回転させながら、基 体 2上にまず榭脂塗布ノズル 22から、内周面 (シユー側)榭脂 3となる上記ウレタンプ レポリマーと硬化剤との混合物を塗布し、シユー側榭脂 3を乾燥'硬化させる。 As shown in FIG. 2, the base 2 is passed between the rolls 20 and 21, and the inner surface (shew side) of the resin 3 is formed on the base 2 from the resin application nozzle 22 while rotating the roll. Apply a mixture of the urethane prepolymer and the curing agent, and dry and cure the side-side resin 3.
[0044] (中間層ポリウレタンの積層) [0044] (Lamination of middle layer polyurethane)
次に基体 2の表裏を反転させ、図 3に示すように、基体 2の他面側に中間層 5となるゥ レタンプレボリマーと硬ィ匕剤 DMTDAの混合物を塗布し、乾燥'硬化させる。 Next, the front and back of the substrate 2 are turned over, and as shown in FIG. 3, a mixture of urethane prepolymer and intermediate hardener DMTDA to be the intermediate layer 5 is applied to the other side of the substrate 2 and dried and cured.
[0045] (最外層ポリウレタンの積層) [0045] (Lamination of outermost polyurethane layer)
上記中間層 5の硬化が進み流動性がなくなった時点で、ウレタンプレボリマーと MBO CA硬化剤とを、 HZNCO当量比が 0.97となるように混合し、該混合物を上記中間層 5の上部力 塗布して最外層 6を形成したあと、乾燥'硬化させる。その後、上方に設 けられた熱源 23により、 100°C、 3時間反応させて、内周面ポリウレタンと中間層ポリウ レタン、および最外層ポリウレタンを完全に硬化させた。
[0046] カゝくして、基体 2の内周面に 1層、外周面に中間層 5,最外層 6の 2層が積層された ベルトが得られた。外周面の各層の厚みは、フェルト側榭脂層 4全体の厚み 2. Omm (相対比として 100)に対して、中間層 5が 1. 5mm (75)、最外層 6は 0. 5mm (25)で ある。 When the intermediate layer 5 is cured and fluidity is lost, the urethane prepolymer and the MBO CA curing agent are mixed so that the HZNCO equivalent ratio is 0.97, and the mixture is applied to the upper force of the intermediate layer 5 After the outermost layer 6 is formed, it is dried and cured. Thereafter, the reaction was carried out at 100 ° C. for 3 hours by the heat source 23 provided above, whereby the inner peripheral surface polyurethane, the intermediate layer polyurethane, and the outermost layer polyurethane were completely cured. As a result, a belt was obtained in which one layer was laminated on the inner peripheral surface of the substrate 2 and two layers of the intermediate layer 5 and the outermost layer 6 were laminated on the outer peripheral surface. The thickness of each layer on the outer peripheral surface is the thickness of the entire felt-side resin layer 4 2. Omm (100 as a relative ratio), while the intermediate layer 5 is 1.5 mm (75) and the outermost layer 6 is 0.5 mm (25 ).
[0047] ポリウレタンが硬化した後、外周面のポリウレタンの表面に回転刃を用いて、幅 1. Om m、深さ 1. Ommの排水溝 7を形成させる。これにより中間層 5である DMTD A硬化ポリ ウレタンの層が露出して排水溝の底部が形成されている。 [0047] After the polyurethane is cured, drainage grooves 7 having a width of 1. Om m and a depth of 1. Omm are formed on the outer peripheral polyurethane surface using a rotary blade. As a result, the layer of DMTD A cured polyurethane as the intermediate layer 5 is exposed and the bottom of the drainage groove is formed.
[0048] [物性の評価] [0048] [Evaluation of physical properties]
得られたベルトサンプルの物性を測定した。物性の測定法は下記のとおりである。 The physical properties of the obtained belt sample were measured. The measuring method of physical properties is as follows.
(1)クラック (1) Crack
図 4に示す装置を用いて測定した。試験片 31は両端がクランプノヽンド 32、 32により挟 持され、クランプハンド 32、 32が、連動して左右方向に往復移動可能に構成されてい る。試験片 31に掛けられる張力は 3kg/cm、往復速度は 40cm/秒である。 Measurement was performed using the apparatus shown in FIG. Both ends of the test piece 31 are clamped by clamp nodes 32 and 32, and the clamp hands 32 and 32 are configured to be able to reciprocate in the left and right directions in conjunction with each other. The tension applied to the specimen 31 is 3 kg / cm, and the reciprocating speed is 40 cm / sec.
また、試験片 31は、外周面が回転ロール 33に接するようにして、回転ロール 33と、プ レスシユー 34とにより挟まれ、プレスシユーを回転ロール方向に移動することにより、 3 6kg/cm2で加圧される。 In addition, the test piece 31 is sandwiched between the rotary roll 33 and the press shoe 34 so that the outer peripheral surface is in contact with the rotary roll 33, and is moved at 36 kg / cm 2 by moving the press shoe in the direction of the rotary roll. Pressed.
この装置により、試験片に往復運動を繰り返し、試験片 31の底部とその縁部にクラッ クが生じるまでの往復回数を測定した。その後、試験片外周面の排水溝間に位置す る凸部表面について、そのヘアクラック発生状況を観察した。 With this device, the test piece was repeatedly reciprocated, and the number of times the test piece 31 was reciprocated until a crack occurred at the bottom and its edge was measured. Thereafter, the occurrence of hair cracks was observed on the convex surface located between the drainage grooves on the outer peripheral surface of the test piece.
[0049] (2)耐摩耗性 [0049] (2) Abrasion resistance
図 5に示す装置を用いて測定した。図 5において試験片 31はプレスボード 35の下部 に取り付けられ、その下の面 (測定対象面)は回転ロール 36に外周面が接触し押圧さ れる。回転ロール 36の外周には、摩擦子 57が設けられ、圧力 10kg/cm、回転ロール の回転速度 100m/分で、加圧下での回転ロールとの接触摩擦を 20分間行い、試験 後の試験片 31の厚み減少量を測定した。 The measurement was performed using the apparatus shown in FIG. In FIG. 5, the test piece 31 is attached to the lower part of the press board 35, and the lower surface (surface to be measured) is pressed by the outer peripheral surface coming into contact with the rotary roll 36. A friction piece 57 is provided on the outer periphery of the rotating roll 36, and the contact friction with the rotating roll under pressure is performed for 20 minutes at a pressure of 10 kg / cm, the rotating speed of the rotating roll of 100 m / min, and the test piece after the test. The thickness reduction amount of 31 was measured.
[0050] [実施例 2] [0050] [Example 2]
実施例 1において、最外層榭脂として MBOCA硬化ポリウレタンを、熱硬化性榭脂で あるアデカレジン EP4100 (ビスフエノール A型エポキシ榭脂)に代え、実施例 1と同様
にしてベルトサンプルを作成し、得られたベルトサンプルの物性を測定した。結果を 表 1に併せて示す。 In Example 1, MBOCA-cured polyurethane was replaced with Adeka Resin EP4100 (bisphenol A type epoxy resin), which is a thermosetting resin, as the outermost layer resin, as in Example 1. Thus, a belt sample was prepared, and the physical properties of the obtained belt sample were measured. The results are also shown in Table 1.
[0051] [表 1] [0051] [Table 1]
[0052] [比較例 1] [0052] [Comparative Example 1]
外周面を、実施例 1で中間層として使用した DMTDA硬化ポリウレタンのみの単層と した以外は実施例 1と同様にしてベルトサンプルを製造し、得られたベルトサンプル の物性を測定した。結果を表 1に併せて示す。 A belt sample was produced in the same manner as in Example 1 except that the outer peripheral surface was a single layer of only DMTDA cured polyurethane used as an intermediate layer in Example 1, and the physical properties of the obtained belt sample were measured. The results are also shown in Table 1.
[0053] [比較例 2] [0053] [Comparative Example 2]
外周面を、実施例 1で最外層として使用した MBOCA硬化ポリウレタンのみの単層と した以外は実施例 1と同様にしてベルトサンプルを製造し、得られたベルトサンプル の物性を測定した。結果を表 1に併せて示す。 A belt sample was produced in the same manner as in Example 1 except that the outer peripheral surface was a single layer of only MBOCA cured polyurethane used as the outermost layer in Example 1, and the physical properties of the obtained belt sample were measured. The results are also shown in Table 1.
[0054] 表 1の結果から明らかなように、外周面を、 DMTDA硬化ポリウレタンの中間層と、 MB OCA硬化ポリウレタンの最外層カゝらなる 2層にした本発明のベルトは耐クラック性、耐 摩耗性、耐ヘアクラック性がバランスよく改善されて 、る。 [0054] As is clear from the results in Table 1, the belt of the present invention in which the outer peripheral surface is made up of an intermediate layer of DMTDA cured polyurethane and an outermost layer of MB OCA cured polyurethane has crack resistance, Abrasion and hair crack resistance are improved in a well-balanced manner.
これに比べて、外周面を DMTDA硬化ポリウレタン単層とした比較例 1のベルトは、 耐クラック性は良好である力 耐摩耗性、耐ヘアクラック性が不十分であり、一方、外 周面を MBOCA硬化ポリウレタン単層とした比較例 2のベルトは耐摩耗性、耐へアクラ ック性は良好である力 耐クラック性が劣るという結果になっている。 Compared to this, the belt of Comparative Example 1 in which the outer peripheral surface is a DMTDA-cured polyurethane single layer has good crack resistance, but has insufficient wear resistance and hair crack resistance, while the outer peripheral surface is The belt of Comparative Example 2, which is a single MBOCA-cured polyurethane layer, has good wear resistance and air crack resistance, resulting in poor crack resistance.
産業上の利用可能性 Industrial applicability
[0055] 本発明により、従来使用されている、外周面ポリウレタンを単層で構成したベルトよ
り耐クラック性、耐摩耗性、耐ヘアクラック性等が優れた製紙機械用ベルトが提供され 、耐久性が増すので、製紙工程の生産性向上による製品の品質向上およびコスト削 減が期待される。 [0055] According to the present invention, a belt having a single outer layer polyurethane formed on the outer peripheral surface is used. As a belt for papermaking machines with excellent crack resistance, abrasion resistance, hair crack resistance, etc. is provided and durability is increased, product quality and cost reduction are expected by improving productivity in the papermaking process .
図面の簡単な説明 Brief Description of Drawings
[0056] [図 1]本発明の製紙機械用ベルトの構成を示す横断面図である。 FIG. 1 is a cross-sectional view showing a configuration of a papermaking machine belt of the present invention.
[図 2]本発明の製紙機械用ベルト製造工程を示す。 FIG. 2 shows a belt manufacturing process for a papermaking machine according to the present invention.
[図 3]本発明の製紙機械用ベルト製造工程を示す。 FIG. 3 shows a process for manufacturing a belt for papermaking machine according to the present invention.
[図 4]耐クラック性試験装置。 [Figure 4] Crack resistance test equipment.
[図 5]耐摩耗性試験装置。 [Figure 5] Wear resistance test equipment.
符号の説明 Explanation of symbols
[0057] 1 ベノレト [0057] 1 Benoleto
2 基体 2 Substrate
3 シユー側榭脂層 3 Shear side oil layer
4 フェルト側榭脂層 4 Felt-side grease layer
5 中間層 5 Middle layer
6 最外層 6 Outermost layer
7 排水溝 7 Drainage channel
8 排水溝底部 8 Drain bottom
9 中間層と最外層との境界面 9 Interface between intermediate layer and outermost layer
20、 21 ロール 20, 21 rolls
22 榭脂塗布ノズル 22 Grease application nozzle
23 熱源 23 Heat source
31 試験片 31 specimen
32 クランプハンド 32 Clamp hand
33 回転ロール 33 Rotating roll
34 プレスシユー 34 Press Shu
35 プレスボード 35 Press board
36 回転ロール
摩擦子
36 rotating roll Friction
Claims
[1] 基体のフェルト側に外周面が積層された製紙機械用ベルトにおいて、外周面が基体 に接する中間層と、その外周に位置する最外層とを含み、中間層がジメチルチオトル ェンジァミンにより硬化されたポリウレタンであり、最外層がジメチルチオトルエンジァ ミン以外の硬化剤により硬化された硬化ポリウレタン、またはエポキシ榭脂、不飽和ポ リエステル榭脂から選ばれた熱硬化性榭脂であり、かつ外周面には排水溝が切削さ れており該排水溝の底部が上記中間層と最外層の境界面より深い位置まで切削され て!、ることを特徴とする製紙機械用ベルト。 [1] In a papermaking machine belt in which the outer peripheral surface is laminated on the felt side of the substrate, the outer peripheral surface includes an intermediate layer in contact with the substrate and an outermost layer positioned on the outer periphery, and the intermediate layer is cured with dimethylthiobenzene A cured polyurethane obtained by curing the outermost layer with a curing agent other than dimethylthiotoluenediamine, or a thermosetting resin selected from epoxy resin and unsaturated polyester resin, and A belt for papermaking machines, characterized in that a drainage groove is cut on the outer peripheral surface, and the bottom of the drainage groove is cut to a position deeper than the boundary surface between the intermediate layer and the outermost layer!
[2] 最外層がメチレンビスオルソクロロア-リンにより硬化されたポリウレタンである請求項 [2] The outermost layer is a polyurethane cured with methylenebisorthochloroaline.
1に記載の製紙機械用ベルト。 The belt for papermaking machines according to 1.
[3] 熱硬化性榭脂がビスフエノール A型エポキシ榭脂である請求項 1に記載の製紙機 械用ベルト。
[3] The papermaking machine belt according to [1], wherein the thermosetting resin is a bisphenol A type epoxy resin.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07707593A EP1985750B1 (en) | 2006-01-31 | 2007-01-29 | Belt for papermaking machine |
DE602007003195T DE602007003195D1 (en) | 2006-01-31 | 2007-01-29 | BAND FOR PAPER MACHINE |
US12/162,232 US20090038770A1 (en) | 2006-01-31 | 2007-01-29 | Belt for papermaking machine |
CN2007800039029A CN101374996B (en) | 2006-01-31 | 2007-01-29 | Belt for papermaking machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-022618 | 2006-01-31 | ||
JP2006022618A JP4827542B2 (en) | 2006-01-31 | 2006-01-31 | Paper machine belt |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007088802A1 true WO2007088802A1 (en) | 2007-08-09 |
Family
ID=38327378
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/051362 WO2007088802A1 (en) | 2006-01-31 | 2007-01-29 | Belt for papermaking machine |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090038770A1 (en) |
EP (1) | EP1985750B1 (en) |
JP (1) | JP4827542B2 (en) |
CN (1) | CN101374996B (en) |
DE (1) | DE602007003195D1 (en) |
WO (1) | WO2007088802A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105803843A (en) * | 2015-01-16 | 2016-07-27 | 株式会社市川 | Shoe press belt and method of manufacturing the same |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010196205A (en) | 2009-02-26 | 2010-09-09 | Ichikawa Co Ltd | Shoe press belt |
FI20115099L (en) * | 2011-01-31 | 2012-08-01 | Metso Fabrics Oy | Shoe press belt, method of making it and use in a shoe press |
JP6467342B2 (en) * | 2013-06-14 | 2019-02-13 | イチカワ株式会社 | Shoe press belt for papermaking |
CN105905523B (en) * | 2016-06-01 | 2018-08-07 | 日志动力传送***(上海)有限公司 | Polyurethane high molecule material felt conveyer belt |
DE102017115592A1 (en) * | 2017-07-12 | 2019-01-17 | Voith Patent Gmbh | press cover |
DE102017117227A1 (en) | 2017-07-31 | 2019-01-31 | Voith Patent Gmbh | Press cover and its use as well as press roller and shoe press |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002327389A (en) * | 2001-04-27 | 2002-11-15 | Yamauchi Corp | Belt for shoe press |
EP1378601A1 (en) | 2002-07-01 | 2004-01-07 | Ichikawa Co.,Ltd. | Shoe press belt |
JP2004052204A (en) * | 2002-07-19 | 2004-02-19 | Ichikawa Woolen Textile Co Ltd | Belt for paper machine and method for producing the same |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3698984B2 (en) * | 2000-11-10 | 2005-09-21 | ヤマウチ株式会社 | Shoe press belt |
JP2005290358A (en) * | 2004-03-08 | 2005-10-20 | Ichikawa Co Ltd | Belt for papermaking machine and its producing method |
CN1712636A (en) * | 2004-06-25 | 2005-12-28 | 市川毛织株式会社 | Papermaking machine belt |
-
2006
- 2006-01-31 JP JP2006022618A patent/JP4827542B2/en not_active Expired - Fee Related
-
2007
- 2007-01-29 CN CN2007800039029A patent/CN101374996B/en not_active Expired - Fee Related
- 2007-01-29 DE DE602007003195T patent/DE602007003195D1/en active Active
- 2007-01-29 EP EP07707593A patent/EP1985750B1/en not_active Expired - Fee Related
- 2007-01-29 US US12/162,232 patent/US20090038770A1/en not_active Abandoned
- 2007-01-29 WO PCT/JP2007/051362 patent/WO2007088802A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002327389A (en) * | 2001-04-27 | 2002-11-15 | Yamauchi Corp | Belt for shoe press |
EP1378601A1 (en) | 2002-07-01 | 2004-01-07 | Ichikawa Co.,Ltd. | Shoe press belt |
JP2004036015A (en) * | 2002-07-01 | 2004-02-05 | Ichikawa Woolen Textile Co Ltd | Shoe press belt |
JP2004052204A (en) * | 2002-07-19 | 2004-02-19 | Ichikawa Woolen Textile Co Ltd | Belt for paper machine and method for producing the same |
Non-Patent Citations (1)
Title |
---|
See also references of EP1985750A4 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105803843A (en) * | 2015-01-16 | 2016-07-27 | 株式会社市川 | Shoe press belt and method of manufacturing the same |
Also Published As
Publication number | Publication date |
---|---|
US20090038770A1 (en) | 2009-02-12 |
EP1985750B1 (en) | 2009-11-11 |
CN101374996A (en) | 2009-02-25 |
JP4827542B2 (en) | 2011-11-30 |
DE602007003195D1 (en) | 2009-12-24 |
CN101374996B (en) | 2011-04-13 |
EP1985750A4 (en) | 2009-03-25 |
EP1985750A1 (en) | 2008-10-29 |
JP2007204862A (en) | 2007-08-16 |
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