CN104603358A - Pressing strip in a paper machine - Google Patents
Pressing strip in a paper machine Download PDFInfo
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- CN104603358A CN104603358A CN201380045916.2A CN201380045916A CN104603358A CN 104603358 A CN104603358 A CN 104603358A CN 201380045916 A CN201380045916 A CN 201380045916A CN 104603358 A CN104603358 A CN 104603358A
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- China
- Prior art keywords
- expelling belt
- web
- belt
- expelling
- subregion
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/0027—Screen-cloths
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- 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
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- 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
- D21F3/0236—Belts or sleeves therefor manufacturing methods
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/08—Felts
- D21F7/086—Substantially impermeable for transferring fibrous webs
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/0066—Calenders; Smoothing apparatus using a special calendering belt
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Paper (AREA)
Abstract
The invention relates to a pressing strip for a shoe press device (10) for draining or smoothing a web of fibrous material, particularly a paper, cardboard, or tissue web, wherein the pressing strip (20, 32) has a fibre-reinforced plastic matrix. The abrasion resistance, the tendency for cracks to form and to grow and/or resistance to media entering into a paper machine are improved due to the fibre-reinforced plastic matrix having, at least in one portion, at least one polyurethane and, as additives, polydimethylsiloxane and silicon dioxide microparticles.
Description
Technical field
The present invention relates to a kind of expelling belt for shoe press equipment with the feature of the preamble of claim 1.In addition, the invention still further relates to a kind of have the feature of the preamble of claim 12 in order to manufacture for the method for the synthetic material matrix of the expelling belt of shoe press equipment.
Background technology
Expelling belt suffers high machinery, heat and chemical load, and these expelling belts such as can be configured to the closed shell of shoe press roller, or are configured to conveyer belt, and this conveyer belt is guided between web of fiber with the shell of corresponding roller as the band of continued circling.Usually, this type of expelling belt is made up of fibre-reinforced polyurethane substrates.Polyurethane substrates can be formed at this single coating or many coating, thus expelling belt can have multiple layer coating in other words.The outer surface of corresponding expelling belt can be equipped with following structure, as such as groove, blind hole or similar structures, to be optimized the dehydration in pressing device.Crackle can be formed due to high mechanical load in expelling belt, wherein, there will be the further growth of crackle equally due to high mechanical load.The crackle growth of this appearance also can increasingly appear in the expelling belt with groove or blind hole.Expelling belt inefficacy structurally and/or functionally can be there is because crackle increases.In addition, expelling belt also suffers the load of huge mechanical dynamic, thus makes expelling belt also stand large wearing and tearing.In addition, expelling belt is in the paper machine subjected to strong chemical load due to the different media applied in the paper machine.Therefore, expelling belt such as can contact with water, oil, acid, basic species, solvent or analog and be corroded at least in part by these media.
Therefore, such as, by the known a kind of squeezing shell of DE19702138 A1, its hardness and ABRASION RESISTANCE be improved by the additive be made up of stone flour, pottery or carbon.Propose in DE4411620 A1, an only skin of squeezing shell is equipped with the additive improving ABRASION RESISTANCE.
By the known following expelling belt of US2005287373 and US20060118261, it has dimethyl silicone polymer.The papermaking machine belt of WO2005090429 and US2008081179 has nano particle, such as to improve the stability, hardness or the mar proof that increase relative to crackle.In EP2330249, describe following papermaking machine belt, it has silicon dioxide microparticle.
Although be present in form of implementation, be there is the requirement with the expelling belt of the stability through improving relative to machinery, heat and chemical load to for shoe press equipment in addition.
Summary of the invention
The problem of the present invention's research is, for the expelling belt of shoe press equipment, and in order to manufacture form of implementation that is that the method for synthetic material matrix being used for this type of expelling belt provides improvement or at least one alternative, its feature is especially: higher mar proof, relatively crackle are formed and crackle increases trend that is little or that be not at least deteriorated, and/or are the lower sensitiveness relative to the medium occurred in the paper machine.
According to the present invention, this problem is solved by the theme of independent claims.Favourable form of implementation is the theme of dependent claims.
In viewpoint of the present invention, propose a kind of expelling belt for shoe press equipment, in order to web of fiber, especially paper web, board web or web of tissue paper are carried out dewatering or flatten sliding, in shoe press equipment, expelling belt has fibre-reinforced synthetic material matrix.At this, fibre-reinforced synthetic material matrix at least can have polyurethane and as the dimethyl silicone polymer of additive and silicon dioxide microparticle in subregion.
Advantageously, can by carrying out additive dimethyl silicone polymer and silicon dioxide microparticle to combine the chemoresistance improved relative to the medium occurred in the paper machine.In addition, mar proof can be improved by the additive mentioned, and the trend that crackle is formed and crackle increases can be made to keep very little.At this advantageously, there is no or only slightly changes the expansion sex character of expelling belt by adding additive combination.
Relative to only using for dimethyl silicone polymer, the combination of additive result in the improvement of mar proof and the raising of chemical stability.And the diffusing capacity only using silicon dioxide microparticle to result in the reactant of synthetic material matrix is deteriorated, and the crackle that result in where necessary thus in the expelling belt made forms trend raising.In addition can determine only using silicon dioxide microparticle as the expelling belt of additive, there is the mar proof be obviously deteriorated.
Therefore can determine, the first-selected load section bar can being made equilibrium by additive combination, thus not only chemoresistance, and crackle formed and crackle growth trend and mar proof be improved all each other under the ratio of equilibrium, and any one or the characteristic aspect required by other that can't occur in these characteristics, the variation of such as expansion sex character aspect.
Expelling belt is understood to band or shell, and it is with being guided through shoe press apparatus roll gap together with web of fiber, and shoe press apparatus roll gap is at the pressing element erect i.e. formed between so-called squeezing shoe and the corresponding roller of cylinder shape.Squeezing shoe is supported on fixing yoke, and is pushed in a hydrodynamic manner on corresponding roller.Except web of fiber and expelling belt, the felt of one or more continued circling and/or the expelling belt of other continued circling can by guiding ground through press nip.
Expelling belt may be embodied as the squeezing shell of shoe press roller, and that is, expelling belt is maintained by the clamping disk(-sc) of two side direction as closed shell, and rotates around fixing squeezing shoe.In order to reduce the friction of expelling belt on squeezing shoe, apply oil in order to lubrication to the inner side of expelling belt.Replace being guided by the clamping disk(-sc) of two side direction, expelling belt can guide via squeezing shoe and multiple deflector roll as when open shoe press apparatus.The surface of squeezing shell can be equipped with groove and/or blind hole.
Expelling belt also may be embodied as conveyer belt, and its band as continued circling is guided between web of fiber with the shell of corresponding roller, to make web of fiber transport through shoe press apparatus roll gap.Then, web of fiber takes off from expelling belt by suction roller, transfers in other tensioner and the machine component flowed to subsequently after passing shoe press apparatus roll gap.Therefore advantageously, the surface of conveyer belt has enough adhesivenesses relative to web of fiber, reliably to guide web of fiber, and the surface of conveyer belt has the trend of good slickness and less generation impression.On the other hand also advantageously, web of fiber can be taken off again.
Fibre-reinforced synthetic material matrix is understood to following synthetic material matrix, and the processbearing astrocyte thing of 1,2 or 3 dimensions is embedded in synthetic material matrix.At this, term " the processbearing astrocyte thing of 1 dimension " comprises fiber, continuous fibers, yarn, fibre bundle, fiber rod, filament, filaments bundles, fibre glass roving or mixed form.Term " 2 dimension processbearing astrocyte things " comprise textile web, knitted net, braided fabric, non-weaving cloth, fabric, unidirectional design fibrage, multi-axial fabric, gauze pad, WEB, sparse textile web, compartment braided fabric, embroidery, sewing product, easily pull textile web or mixed form.Term " the processbearing astrocyte things of 3 dimensions " is understood to the processbearing astrocyte thing of 2 dimensions of multiple upper lower leaf substantially.At this, the processbearing astrocyte thing of 2 dimensions can differently construct.Therefore thinkable, after unidirectional fibrage be then such as non-weaving cloth as lower one deck, and textile web can close the processbearing astrocyte thing of 3 dimensions.But the processbearing astrocyte thing of 2 only unidirectional dimensions also may be used for the processbearing astrocyte thing of structure 3 dimension.At this, the processbearing astrocyte thing of 2 unidirectional dimensions can be directed or differently directed in the same manner about its direction.Multi-axial fabric is there is when last.
Glass fibre, carbon fiber, plastic optical fibre, aramid fiber, pbo fiber, polyethylene fiber, polyester fiber, polyamide fiber, natural fabric, basalt fibre, quartz fibre, alumina fibre, silicon carbide fibre or mixed form can be used as the material for processbearing astrocyte thing.
Additive is understood to the material being added to synthetic material matrix, to change the characteristic of synthetic material matrix with the mode expected and method.Therefore additive is added to synthetic material matrix, such as to affect mar proof targetedly, the trend of low formation crackle, few crackle increase, relative to there is the medium such as high stability of water, oil, acid, basic species, solvent or analog, the surface characteristic of expectation in the paper machine, such as, relative to the tack of web of fiber, hardness or similar characteristics.At this, the characteristic realized by fiber reinforcement can be had influence on equally by additive.Therefore other additive can be used, such as any combination of pigment, microfiber (such as carbon fiber, glass fibre or analog), glass dust, coal, clay, montmorillonite, saponite, hectorite, mica, vermiculite, bentonite, nontronite, beidellite, wolchonskoite, Man Nadite (Manadiit), kenyaite, terre verte, Bei Deruite (Bederit), carborundum, silicate, metal oxide or above-mentioned compound.
Web of fiber is understood to include fabric or the intertexture of the fiber of xylon, plastic optical fibre, glass fibre, carbon fiber, additive, additives or analog.Therefore, web of fiber such as can be configured to the paper web, board web or the web of tissue paper that are substantially made up of xylon, wherein, has other a small amount of fiber or additive and additives.
In addition, at least one other subregion of fibre-reinforced synthetic material matrix can be configured to foam.Advantageously, can by the other subregion of fibre-reinforced synthetic material matrix being configured to higher elasticity and the flexibility that foam sets up expelling belt.In the following way, that is, make expelling belt have less hardness, pressing force can be conditioned more accurately.In addition, in other components of web of fiber or paper machine in irregular situation, pressing force fluctuates less intense.At this, foam is understood to by the separated vesicle of wall.If foam is perforate, so wall is at least that part is through, and when foam is closed, each vesicle is closed by wall.
At least there is polyurethane and such as can comprise the layer of expelling belt, expelling belt superficial layer, the fringe region of expelling belt or the internal layer of expelling belt as the dimethyl silicone polymer of additive and the subregion of silicon dioxide microparticle or the other subregion that is configured to foam.
If subregion comprises the superficial layer of expelling belt, so expelling belt can possess the surface characteristic of expectation, but still possesses other favourable characteristics by the heteroid build-up layer of expelling belt.Therefore, such as can realize abrasion strength resistance, favourable crack form and the high stability relative to the medium occurred in the paper machine by the superficial layer designed like this, and sufficiently high elasticity and anti-Crack Strength can be set up by internal layer.This is also applicable to the fringe region of expelling belt similarly.The internal layer be such as made up of foam pro can affect the elastic flexibility of seeking peace of expelling belt, and can not make the required high bad stability on the surface of expelling belt.
At this, the floor of expelling belt or coating are understood in a thickness direction relative to the region that other floor or coating district can separate.At this, distinguishing such as can by fibre reinforcement, by structure synthetic material matrix, by additive share and/or realized by mechanical property.
In addition, the dimethyl silicone polymer used can have the viscosity of 100 to 100,000mPa*s.Also can use and have 500 to 50,000mPa*s, if desired 1,000 to 10,000mPa*s, especially 1,500 to 5,000mPa*s, and the dimethyl silicone polymer of the viscosity of such as 2,000 to 3,000mPa*s.This is relevant with the temperature of 25 DEG C.
Advantageously, by using the dimethyl silicone polymer with such viscosity can reduce blemish in expelling belt.In addition, by such viscosity of dimethyl silicone polymer can improve the reactant of synthetic material matrix can dispersivity.
In addition, at least one subregion can have the dimethyl silicone polymer of 0.1 to 10 % by weight.Also thinkable, at least one subregion has the dimethyl silicone polymer of 0.1 to 8 % by weight, especially 0.1 to 5 % by weight, if desired 0.1 to 3 % by weight and such as 0.2 to 1.5 % by weight.
Advantageously, can be realized by the dimethyl silicone polymer of such share before the advantage mentioned.
In addition, silicon dioxide microparticle can have the mean particle size of 2 to 800 μm.Also thinkable, use following silicon dioxide microparticle, they have 5 to 500 μm, especially 5 to 50 μm, such as 10 to 30 μm and the mean particle size of 10 to 20 μm if desired.
Advantageously, by such mean particle size of silicon dioxide microparticle can improve the reactant of synthetic material matrix can dispersivity.
In addition, at least one subregion can have the silicon dioxide microparticle of 0.01 to 10 % by weight.Also thinkable, at least one subregion has the silicon dioxide microparticle of 0.01 to 5 % by weight, especially 0.05 to 3 % by weight, if desired 0.05 to 0.5 % by weight and such as 0.05 to 2 % by weight.
Advantageously, can be realized by the silicon dioxide microparticle of such share before the advantage mentioned.
In addition, can be used in, at least one subregion, there is the nano SiO 2 particle that mean particle size is 10 to 80nm.Also thinkable, use following nano SiO 2 particle, they have 12 to 60nm, especially 14 to 40nm, such as 16 to 30nm and the mean particle size of 18 to 25nm if desired.
Advantageously, the trend formed by using nano SiO 2 particle can reduce crackle.The trend that crackle increases can reduce equally in a practical manner.Although only use nano SiO 2 particle to further improve the trend of crackle formation, this will cause mar proof to be deteriorated.The mar proof of at least one subregion will be improved when combining additive.
In addition, at least one subregion can have the nano SiO 2 particle of 0.01 to 10 % by weight.
The advantage mentioned before can realizing by the nano SiO 2 particle of the such share at least one subregion.
In addition, at least one polyurethane at least can be made up of polyurethane prepolymers and cross-linking agent.At this, polyurethane prepolymers can utilize and is configured to MDI prepolymer as the polyethers of polyol component and/or Merlon and/or poly-acetic acid lactone and/or is configured to PPDI prepolymer.Advantageously, can be set up relative to the durability desired by the wearing and tearing of expelling belt and stability by the polyurethane component of the synthetic material matrix constructed like this.In addition, the feature of this type of synthetic material matrix is to have the high stability relative to the medium occurred in the paper machine.
In addition, cross-linking agent can contain at least one polyether polyol.Also thinkable, use the polyether polyol of straight chain and such as also have the polypropylene ether polyol of straight chain.
Synthetic material matrix advantageously can be affected in elasticity, hardness and relative to the characteristic in the stability occurring medium in the paper machine by this type of cross-linking agent.
In another viewpoint of the present invention, propose a kind of as before describe in order to manufacturing needles to for web of fiber, especially paper web, board web or web of tissue paper carry out the method for the synthetic material matrix of the expelling belt dewatering or flatten sliding shoe press equipment.At this, synthetic material matrix is made up of at least one polyurethane prepolymers, at least one cross-linking agent, dimethyl silicone polymer and silicon dioxide microparticle.
By such method can advantageously make have before the expelling belt of advantage mentioned.
In addition, at least one polyurethane prepolymers is carried out crosslinked before, nano SiO 2 particle can be mixed into mixture of nanoparticles with cross-linking agent at least partially, and mixture of nanoparticles contains the nano SiO 2 particle of 20 to 60 % by weight.Also thinkable, mixture of nanoparticles contains the nano SiO 2 particle of 25 to 55 % by weight, such as 30 to 50 % by weight, especially 35 to 45 % by weight and if desired 38 to 42 % by weight.
Advantageously, by such process wizard can realize good can dispersivity.If use the silica nanoparticles that formed by sol-gel process, that so can improve the reactant of synthetic material matrix further can dispersivity, wherein, can stop OH group at the surface of the particles by silanization.
In addition, mixture of nanoparticles replaces completely or replaces at most the cross-linking agent of 5 to 40% in method step subsequently.In addition also thinkable, mixture of nanoparticles replace at most 6 to 35%, especially 7 to 30%, such as 9 to 30% and if desired 10 to 25% cross-linking agent.
By such method guide can improve the reactant of synthetic material matrix equally further can dispersivity.In addition, the mixing of each reactant to synthetic material matrix can also be improved thus.
In addition, at least one polyurethane prepolymers is carried out crosslinked before, silicon dioxide microparticle can be mixed together into additives mixed thing with dimethyl silicone polymer with other additive if desired.Additives mixed thing can mix with cross-linking agent at least partially subsequently.Thinkable at this, nano SiO 2 particle is mixed in cross-linking agent before.
Guided the uniform mixing that advantageously can realize reactant to synthetic material matrix by such method, and can improve can dispersivity and mixing sex character.
Average granular size such as can utilize the measure of laser light scattering light or determine by dynamic graphical analysis.1 μm of granular size to 30mm can be determined by dynamic graphical analysis.Laser light scattering measure can analyze the granular size of 0.3nm to 1 μm.Average granular size limits according to the measurement measure correspondingly used for its magnitude range at this.
Accompanying drawing explanation
Other important feature and advantage of the present invention are by dependent claims, accompanying drawing and obtain with the attached figure description of example by reference to the accompanying drawings.Preferred embodiment of the present invention is shown in the drawings, and elaborates in the description that follows, and wherein, identical Reference numeral represents same or similar or that function is identical component.Wherein, respectively schematically:
Fig. 1 illustrates the view of the shoe press apparatus according to an embodiment of the invention with squeezing shell; And
Fig. 2 illustrates the view comprising the press section of shoe press apparatus and conveyer belt according to an embodiment of the invention of paper machine.
Detailed description of the invention
Figure 1 illustrates shoe press apparatus 10, it comprises shoe roller 12 and corresponding roller 14.Corresponding roller 14 by the cylinder shape rotated the roller that designs form, and shoe roller 12 is assembled by shoe 16, the yoke 18 carrying this shoe and squeezing shell 20.At this, shoe 16 is supported by yoke 18 and pressing element via unshowned hydraulic pressure is pressed on the squeezing shell 20 around this shoe.Long squeezing gap 22 is obtained due to the design of the spill of shoe 16 on the side that it is opposite with corresponding roller 14.Shoe press apparatus 10 is particularly useful for dewatering to web of fiber 24.When shoe press apparatus runs, web of fiber 24 squeezes together with film 26,26 ' by guiding ground through squeezing gap 22 with one or two, wherein, the liquid of discharging from web of fiber 24 owing to being applied to pressure on web of fiber 24 in squeezing gap 22 be squeezed film 26,26 ' and the recess (not shown) be arranged in squeezing shell surface temporarily absorb, liquid in addition to water also containing that dissolved such as, with undissolved compound, fiber, fibrous fracture block, additive and/or additives.After leaving squeezing gap 22, the liquid being squeezed shell 20 absorption squeezed shell 20 centrifugations from 15 before squeezing shell 20 reenters squeezing gap 22.In addition, be squeezed the water that film 26,26 ' absorbs to remove with suction element after leaving squeezing gap 22.
The long squeezing gap 22 due to the design because of the spill of shoe 16 on the side that it is opposite with corresponding roller 14, compared with the pressing device formed with the roller rotated by two, this shoe press apparatus 10 is utilized to achieve web of fiber 24 obviously better dehydration, thus can the corresponding heated drying cancelled more momently subsequently.Achieve the dehydration economic especially to web of fiber 24 in like fashion.
Figure 2 illustrates the Local map of the press section of paper machine 30, this press section comprises shoe press apparatus 10.At this, as form of implementation also shown in Figure 1, shoe press apparatus 10 comprises and has squeezing shell 20 and the pressing element shoe roller 12 of shoe 16 and corresponding roller 14 in other words, wherein, forms and squeeze gap between shoe 16 with corresponding roller 14.In addition, this part of paper machine also comprises two suction roller 28,28 ' and two commutation rollers 30,30 '.When paper machine runs, by guiding that ground passes suction roller 28,28 ', accept web of fiber 24 at suction roller 28 place felt 26 through squeezing gap.In addition, in the below of the felt 26 of guiding web of fiber 24, the conveyer belt guided by 10 commutation rollers 30,30 ' in other words conveyer belt 32 passes squeezing gap with being guided, wherein, conveyer belt 32 accepts web of fiber 24 from felt 26 in squeezing gap, and exports from squeezing gap via commutation roller 30 '.From web of fiber 15, liquid is discharged owing to being applied to the pressure on web of fiber 24 in squeezing gap, liquid in addition to water also containing that dissolved with undissolved compound, such as fiber, fibrous fracture block, additive and/or additives, liquid temporarily absorbs by felt 26 and by the recess be arranged in squeezing shell surface.After leaving squeezing gap, the liquid being squeezed shell 20 absorption is squeezing before shell 20 reenters squeezing gap from the centrifugation of squeezing shell 20.In addition, after leaving squeezing gap, the water conservancy absorbed by felt 26 suction element be arranged on suction roller 28 ' is removed.The long 25 squeezing gaps due to the design of the spill because of shoe 16, compared with the pressing device formed with the roller rotated by two, utilize this shoe press apparatus to achieve and better dehydration is carried out obviously to web of fiber 24, thus can the corresponding heated drying cancelled more momently subsequently.Realize the dehydration economic especially to web of fiber 24 in like fashion.
Example:
Wherein:
Hardness [ShA] before HV immersion
Wearing and tearing [mm] before AV immersion
AN soaks the wearing and tearing [mm] after 150 hours when 95 DEG C
VAV is to the improvement [%] of the mar proof before immersion
VAN is to the improvement [%] of mar proof after immersion
RB when 100 ten thousand loads, the mean value [mm] that crackle in BW machine increases
Compared with the comparison plate not having additive, by adding dimethyl silicone polymer-silica-particulate, make mar proof particularly immersion after be improved significantly.At this, the trend that crackle increases is constant substantially.Therefore, mar proof can be improved when the trend of crackle growth is almost constant by adding dimethyl silicone polymer-silica-particulate.
The perparation of specimen:
Use the MDI-polyethers-prepolymer with the NCO of roughly 6% content.MCDEA and PTHF200 uses as cross-linking agent, and implements crosslinked when the temperature of 90 DEG C.
Prepolymer, MCDEA and PTHF2000 utilize separately cold boiler degassed.Dimethyl silicone polymer-SiO is added to cross-linking agent
2-particulate.Then, all components mixes in vortex mixer.Mixture is poured into a mould and is annealed in steel mold.
Determine mar proof:
Mar proof is implemented according to DIN 5316 and ISO 4649.For this reason, load to the sample with 16mm diameter with the power of test of 10N.When angular speed is 40 revs/min, grinding length is 40m.
Determine the mean value that crackle increases:
Crackle increases to be implemented in BW machine (alternating bending machine).For this reason, when frequency is 7.5Hz, under the angle of +/-40 °, sample is bent 1,000,000 time.Snick in sample has the width of 6mm and the degree of depth of 2.5mm.
Claims (15)
1. the expelling belt for shoe press equipment (10), in order to web of fiber, particularly paper web, board web or web of tissue paper are carried out dewatering or flatten sliding, wherein, described expelling belt (20,32) has fibre-reinforced synthetic material matrix
It is characterized in that,
Described fibre-reinforced synthetic material matrix at least has at least one polyurethane and as the dimethyl silicone polymer of additive and silicon dioxide microparticle in subregion.
2. expelling belt according to claim 1,
It is characterized in that,
At least another part regional structure of described fibre-reinforced synthetic material matrix is foam.
3. according to expelling belt in any one of the preceding claims wherein,
It is characterized in that,
At least one subregion is selected by following group:
The internal layer of the layer of described expelling belt (20,32), the superficial layer of described expelling belt (20,32), the fringe region of described expelling belt (20,32), described expelling belt (20,32).
4. according to expelling belt in any one of the preceding claims wherein,
It is characterized in that,
The dimethyl silicone polymer used has the viscosity of 100 to 100,000mPa*s.
5. according to expelling belt in any one of the preceding claims wherein,
It is characterized in that,
At least one subregion described has the share of the dimethyl silicone polymer of 1 to 10 % by weight.
6. according to expelling belt in any one of the preceding claims wherein,
It is characterized in that,
Described silicon dioxide microparticle has the mean particle size of 10 to 800 μm.
7. according to expelling belt in any one of the preceding claims wherein,
It is characterized in that,
At least one subregion described has the share of the silicon dioxide microparticle of 1 to 10 % by weight.
8. according to expelling belt in any one of the preceding claims wherein,
It is characterized in that,
At least one subregion described has the nano SiO 2 particle that mean particle size is 10 to 80nm.
9. according to expelling belt in any one of the preceding claims wherein,
It is characterized in that,
At least one subregion described has the share of the nano SiO 2 particle of 1 to 10 % by weight.
10. according to expelling belt in any one of the preceding claims wherein,
It is characterized in that,
Described at least one polyurethane is at least made up of polyurethane prepolymers and cross-linking agent, and wherein, described polyurethane prepolymers utilizes and is configured to MDI prepolymer as the polyethers of polyol component and/or Merlon and/or is configured to PPDI prepolymer.
11. according to expelling belt in any one of the preceding claims wherein,
It is characterized in that,
Described cross-linking agent contains at least one polyether polyol or is made up of polyether polyol.
12. 1 kinds in order to manufacture the method for the synthetic material matrix being used for expelling belt particularly according to aforementioned any one of claim,
It is characterized in that,
Described synthetic material matrix is made up of at least one polyurethane prepolymers, at least one cross-linking agent, dimethyl silicone polymer and silicon dioxide microparticle.
13. methods according to claim 12,
It is characterized in that,
Before carrying out described at least one polyurethane prepolymers being cross-linked; to be mixed into mixture of nanoparticles at least partially in nano SiO 2 particle and described cross-linking agent, described mixture of nanoparticles contains the nano SiO 2 particle of 20 to 60 % by weight.
14. methods according to claim 13,
It is characterized in that,
Described mixture of nanoparticles replaces completely or replaces at most the described cross-linking agent of 5 to 40% in method step subsequently.
15. methods according to any one of the claims,
It is characterized in that,
Before carrying out described at least one polyurethane prepolymers being cross-linked, described silicon dioxide microparticle is become additives mixed thing with described dimethyl silicone polymer with additives mixed other if desired, subsequently by described additives mixed thing and mixing at least partially in described cross-linking agent.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012215612.7 | 2012-09-04 | ||
| DE102012215612 | 2012-09-04 | ||
| PCT/EP2013/067858 WO2014037268A1 (en) | 2012-09-04 | 2013-08-29 | Pressing strip in a paper machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104603358A true CN104603358A (en) | 2015-05-06 |
Family
ID=49080881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380045916.2A Pending CN104603358A (en) | 2012-09-04 | 2013-08-29 | Pressing strip in a paper machine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20150211177A1 (en) |
| EP (1) | EP2893079A1 (en) |
| CN (1) | CN104603358A (en) |
| CA (1) | CA2883016A1 (en) |
| WO (1) | WO2014037268A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115874483A (en) * | 2021-09-30 | 2023-03-31 | 维美德技术有限公司 | Boot sleeve |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6674698B2 (en) * | 2015-04-07 | 2020-04-01 | ヤマウチ株式会社 | Shoe press belt |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4830905A (en) * | 1988-08-22 | 1989-05-16 | Appleton Mills | Papermaker's felt incorporating a closed cell polymeric foam layer |
| US6296738B1 (en) * | 1999-09-29 | 2001-10-02 | Ichikawa Co., Ltd. | Shoe press belt |
| US20040014383A1 (en) * | 2002-07-19 | 2004-01-22 | Atsushi Ishino | Belt for papermaking machine and manufacturing method therefor |
| CN1525003A (en) * | 2003-02-26 | 2004-09-01 | �д�ë֯��ʽ���� | Press felt for papermaking |
| EP1609905A1 (en) * | 2004-06-25 | 2005-12-28 | Ichikawa Co.,Ltd. | Papermaking machine belt and method for manufacturing a papermaking machine belt |
| CN1836070A (en) * | 2003-08-11 | 2006-09-20 | 阿尔巴尼国际公司 | Paper industry process belt with a surface structure composed of a porous membrane |
| EP2330249A1 (en) * | 2009-11-27 | 2011-06-08 | Ichikawa Co.,Ltd. | Process belt for papermaking and method for making the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE477289T1 (en) * | 2004-03-16 | 2010-08-15 | Albany Int Corp | POLYURETHANE COATED BELTS WITH NANOFILLERS |
| US20060118261A1 (en) * | 2004-11-16 | 2006-06-08 | Ichikawa Co., Ltd. | Shoe press belt |
| JP2006144139A (en) * | 2004-11-16 | 2006-06-08 | Ichikawa Co Ltd | Belt for shoe press |
| DE102007019960A1 (en) * | 2007-04-27 | 2008-11-06 | Voith Patent Gmbh | Improvements in transfer ribbons, background of the invention |
| FI121015B (en) * | 2007-07-05 | 2010-06-15 | Tamfelt Pmc Oy | The shoe press belt |
-
2013
- 2013-08-29 EP EP13753636.3A patent/EP2893079A1/en not_active Withdrawn
- 2013-08-29 WO PCT/EP2013/067858 patent/WO2014037268A1/en active Application Filing
- 2013-08-29 US US14/425,650 patent/US20150211177A1/en not_active Abandoned
- 2013-08-29 CN CN201380045916.2A patent/CN104603358A/en active Pending
- 2013-08-29 CA CA2883016A patent/CA2883016A1/en not_active Abandoned
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4830905A (en) * | 1988-08-22 | 1989-05-16 | Appleton Mills | Papermaker's felt incorporating a closed cell polymeric foam layer |
| US6296738B1 (en) * | 1999-09-29 | 2001-10-02 | Ichikawa Co., Ltd. | Shoe press belt |
| US20040014383A1 (en) * | 2002-07-19 | 2004-01-22 | Atsushi Ishino | Belt for papermaking machine and manufacturing method therefor |
| CN1525003A (en) * | 2003-02-26 | 2004-09-01 | �д�ë֯��ʽ���� | Press felt for papermaking |
| CN1836070A (en) * | 2003-08-11 | 2006-09-20 | 阿尔巴尼国际公司 | Paper industry process belt with a surface structure composed of a porous membrane |
| EP1609905A1 (en) * | 2004-06-25 | 2005-12-28 | Ichikawa Co.,Ltd. | Papermaking machine belt and method for manufacturing a papermaking machine belt |
| EP2330249A1 (en) * | 2009-11-27 | 2011-06-08 | Ichikawa Co.,Ltd. | Process belt for papermaking and method for making the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115874483A (en) * | 2021-09-30 | 2023-03-31 | 维美德技术有限公司 | Boot sleeve |
| JP7429745B2 (en) | 2021-09-30 | 2024-02-08 | バルメット テクノロジーズ オサケユキチュア | belt |
Also Published As
| Publication number | Publication date |
|---|---|
| US20150211177A1 (en) | 2015-07-30 |
| WO2014037268A1 (en) | 2014-03-13 |
| CA2883016A1 (en) | 2014-03-13 |
| EP2893079A1 (en) | 2015-07-15 |
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Application publication date: 20150506 |