CN1236842A - Conveying belts for shoe long roller presses - Google Patents
Conveying belts for shoe long roller presses Download PDFInfo
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- CN1236842A CN1236842A CN99105239A CN99105239A CN1236842A CN 1236842 A CN1236842 A CN 1236842A CN 99105239 A CN99105239 A CN 99105239A CN 99105239 A CN99105239 A CN 99105239A CN 1236842 A CN1236842 A CN 1236842A
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- roll gap
- conveyer belt
- long roll
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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
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/08—Felts
- D21F7/12—Drying
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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
- D21F7/083—Multi-layer felts
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Laminated Bodies (AREA)
Abstract
A long nip press belt for a long nip press on a paper machine includes an endless base support substrate, a staple fiber batt attached to at least one of the two sides of the endless base support substrate, and polymeric resin materials totally impregnating the fiber/base composite structure comprising the endless base support substrate and the staple fiber batt. A layer of polymeric resin material is built up upon the fiber/base composite structure to a predetermined thickness on each side of the long nip press belt. Once the polymeric resin material is cured, at least the inside surface is ground to a desired smoothness without exposing any fiber on the ground surface.
Description
The present invention relates to machinery, more specifically say, relate to the machinery that on paper machine, dewaters by the cellulosic fiber blank of preparing the manufacturing paper product to the dehydration of material blank.What particularly point out is that the present invention is the impermeable conveyer belt that is designed for long roll gap press on the paper machine.
In paper-making process, deposit fiber cellulose fiber slurry on the knitting and forming band and form fibrous blank thereon, water a large amount of in this process are discharged by slurry, and after this fiber blank of new moulding enters press sections.Press sections comprises one group of press nip, and the fiber blank is under pressure therein, to discharge contained humidity.The fiber blank enters the oven dry part at last, and it comprises the oven dry drum barrel, and the fiber blank is guided around thereon.The oven dry drum barrel of heating is made paper by evaporating the level that the moisture of fiber blank is reduced to hope.
The energy cost that raises makes strong hope exclude moisture as much as possible before the fiber blank enters the oven dry part.Drum barrel is often by the inside Steam Heating, and in the time of particularly need excluding large quantity of moisture by the fiber blank, correlative charges can reduce greatly.
Press sections comprises by a series of roll gaps of adjacent round pressure roller to forming traditionally.It is more superior to the roll gap that forms than using adjacent pressure roller that discovered in recent years uses long roll gap press roll gap.This is that the moisture that the there is got rid of is many more because time of cellulose fibre blank withstanding pressure in roll gap is long more, therefore, is deposited in that to wait to dry the moisture that part gets rid of by evaporation in the fiber blank few more.
The present invention relates to shoe long roller presses, long roll gap forms between cylindrical roller and arc pressure base in the long roll gap press of this kind, and the latter has and the close recessed surface of circle pressure roller radius of curvature.When circle pressure roller and base are closer to each other, they at the roll gap that forms on the machine direction than long 5～10 times of the roll gap between two pressure rollers.So just increased and be called as the closing time that the fiber blank is exerted pressure in the long roll gap.The result that the common roll gap of the result of this long roll gap technology newly and paper machine obtains has relatively increased the dehydration of fiber blank in the long roll gap greatly.
Shoe long roller presses requires special conveyer belt, and for example U.S. Patent No. 5,238, shown in 537.This conveyer belt must have level and smooth fluid-tight surface, relies on or slides on fixing base last layer lubricating oil film.Conveyer belt from the roughly the same speed of press braid over braid by roll gap, therefore make the press braid over braid suffer the wear extent minimum on conveyer belt surface.
U.S. Patent No. 5,238, the conveyer belt shown in 537 are to make with braiding matrix braid over braid dipping synthetic polymer resin, and have the shape of endless loop.Best, form the coating of certain predetermined thickness at least at the inner surface resin of conveyer belt, thereby can prevent that the yarn that weaves the matrix braid over braid from directly contacting with the arc pressure base element of long roll gap press.Particularly this coating must have level and smooth impermeable surface, so that slide neatly on lubricated base and prevent any lubricating oil infiltration conveyer structure depollute press braid over braid and fiber blank.
U.S. Patent No. 5, the matrix braid over braid of conveyer belt shown in 238,537 can be woven into the single or multiple lift fabric by monofilament yarn, and is woven to enough openings, so that make impregnated material go into fabric by thorough impregnation, so just eliminated the possibility that on final conveyer belt, forms any hole.This hole can make the lubricant that uses between conveyer belt and the base by conveyer belt depollute press braid over braid and fiber blank.
When impregnated material be cured as solid-state after, it is combined on the matrix braid over braid by means of mechanical bond power, the impregnated material of Gu Huaing is round the yarn of matrix braid over braid within it.
According to different needs, often require the control impregnated material to infiltrate through the degree of depth of matrix braid over braid.This requirement or because only have the matrix braid over braid simultaneously to apply, or because every will apply in independent operation.
Therefore, have in the matrix braid over braid, add filler or filling yarn for this purpose.Use them only to obtain the part success, although add filler or fill yarn, impregnated material always produces with inhomogeneous form by some seepage of matrix braid over braid, here braid over braid only has coating in one side, this is aesthetic problem with regard to causing at least, for example presents scabbing and unevenness in the uncoated one side of matrix braid over braid at last owing to the uneven infiltration of impregnated material.
Because the impregnated material that solidifies tentatively is bonded on the matrix braid over braid by means of mechanical bond power, impregnated material must permeate enough degree of depth guaranteeing it and matrix braid over braid combining to a certain degree, and is not easy layering.When the two sides of matrix braid over braid must apply in independent operation, its impregnated material of every must be in conjunction with getting enough firmly to prevent layering.In order to guarantee such result, impregnated material on first of prepare applying should the uniformly penetrating certain depth, it is combined with matrix braid over braid machinery, and keep enough not impregnated structures, so that make impregnated material can be coated to another side and its mechanical bond.If impregnated material is penetrated deeply by first face, the impregnated material that then is coated to the another side very few and final layering in position that may mutually combine.
One of method that suggestion overcomes this difficulty is an one side of at first using impregnated material coated substrates braid over braid, and makes this coating partly solidified at least.In matrix braid over braid upset back (inside-out commentaries on classics), apply adhesive coatings (tie coating) then, apply the impregnated material coating subsequently at another side.Adhesive coatings provides the chemical bond of replenishing between the coating on the matrix braid over braid two sides.Yet, use adhesive coatings to increase extra operation, and be difficult to control.
The present invention is a kind of improved long roll gap press conveyer belt, and the two sides of its matrix braid over braid all applies impregnated material, and the quantity of infiltrating the matrix braid over braid guarantees that enough coating is unlikely from any one side delamination.
Comprise the substrate support bottom according to the long roll gap press of the present invention conveyer belt, it is made the endless loop shape and has outside and inner face.Ground floor artificial fibre felt is bonded on the inner face or the outside of substrate support bottom, and extend to small part and to penetrate this bottom, and second layer artificial fibre felt can be bonded on the another side of this substrate support bottom, if do like this, equally also extends to small part and penetrates this bottom.This substrate support bottom and ground floor artificial fibre felt may also have second layer artificial fibre felt to form the fiber composite construction together.
With this fiber composite construction of ground floor polymeric resin material impregnates to inner face uniform depth is arranged wherein extremely, and form one deck on the face within it by any artificial fibrous felt from the substrate support bottom.The ground floor polymer resin material has the surface of polishing, polishing or polishing, thereby does not have artificial fibrous felt to be exposed on polishing, polishing or the polishing surface when polishing, polishing or polishing.
With this fiber composite construction of second layer polymeric resin material impregnates to from the outside of substrate support bottom to the ground floor polymer resin material, and form one deck in the outside of substrate support bottom by any artificial fibrous felt.Second layer polymer resin material also can have the surface of polishing, polishing or polishing, thereby does not have artificial fibrous felt to be exposed on polishing, polishing or the polishing surface when polishing, polishing or polishing.Long roll gap press conveyer belt of the present invention is oil-tight and water.
The substrate support bottom can be any as paper machine cloth basal body structure, for example braiding, non-woven, bonding or woollen yarn knitting braid over braid, polymer resin material extrusion plate, extrusion billet shape fabric or screw engagement fabric.This substrate support bottom also can be woven many circles and combine by the web spiral of above-mentioned a kind of material, the continuous stitch bond of each circle and adjacent turn, so the substrate support bottom is endless in the vertical.
The layer structure that the substrate support bottom also can be made up of two-layer or more basic units, every layer can be a kind of in the said structure.Because the substrate support bottom is a stratiform, an element of base layer can be the fabric that can sew up on the machine, and therefore installation duration roll gap press conveyer belt can be sewed up and make endless loop form on paper machine.
The artificial fibre felt is joined on the substrate support bottom, for example, with knitting or hydraulic pressure entanglement method.The artificial fibre felt joins the one side at least on substrate support bottom two sides to, extends to small part and penetrates.The mode that engages is at one or both sides reservation one deck artificial fibre felt of preparing to engage artificial fibrous felt substrate support bottom.
At the inner face coated polymer resin material of fiber composite construction, and make its impregnation of fibers/matrix composite construction to basic uniform depth.On the surface of fiber composite construction, pile up the one layer of polymeric resin material, be aggregated the resin material and coat fully to guarantee it.After the curing, the partial polymer resin material is removed with polishing and/or polishing method, to reach the smoothness of hope, does not expose any fiber composite construction.
The outside of fiber composite construction applies with of the same race or different types of polymers resin material.Polymer resin material can be used for the remainder of impregnation of fibers/matrix composite construction.Also piling up the one layer of polymeric resin material on the surface of fiber composite construction is aggregated the resin material and coats fully to guarantee it.After the curing, the partial polymer resin material is removed with polishing and/or polishing method, to reach the smoothness of hope, does not expose any fiber composite construction.
This long roll gap press conveyer belt that has uniform fibers enhancing fluoropolymer resin base provides uniform pressure pulse in the roll gap to the ground paper material that dewaters, and has the longer lifetime of long roll gap press conveyer belt than present use.It provides the solution that solves the long roll gap press of prior art and some relevant issues of conveyer belt in this respect.
With reference to the accompanying drawings the present invention is illustrated in more detail, in the accompanying drawing:
Fig. 1 is the sectional side view of long roll gap press;
Fig. 2 is the perspective view of conveyer belt of the present invention;
Fig. 3 is the perspective view of another embodiment conveyer belt;
Fig. 4 is the perspective view of another embodiment conveyer belt;
Fig. 5 is the drawing in side sectional elevation of the long roll gap press of first embodiment of the invention conveyer belt, and
Fig. 6 is second embodiment gets long roll gap press conveyer belt by machine direction a drawing in side sectional elevation.
In most preferred embodiment shown in Figure 1, dehydration was used when a kind of long roll gap press of model was used for that on paper machine the fiber blank is processed as paper product.Press roll gap 10 is that the pressure base 14 by smooth round pressure roller 12 and arc limits.Base 14 has and the roughly the same radius of curvature of circle pressure roller 12.Distance between circle pressure roller 12 and the arc pressure base 14 can be regulated by the hydraulic means that is connected on the arc pressure base 14.Smooth round pressure roller 12 can be controlled convex surface roller, so as with pressure base 14 coupling of arc to obtain the machine roll gap profile of crossing on the same level.Circle pressure roller 12 can not be smooth, but fluting gets out blind hole or makes the duct with similar approach.
Long roll gap press conveyer belt 16 extends with closed loop by roll gap 10, will justify pressure roller 12 and keep apart with arc pressure base 14.Press braid over braid 18 and cellulose fibre blank 20 are admitted to paper path by roll gap 10 together, shown in Fig. 1 arrow.Cellulose fibre blank 20 is supported and directly contacts with smooth round pressure roller 12 in roll gap 10 by press braid over braid 18.Cellulose fibre blank 20 and press braid over braid 18 are pressed shown in the arrow by roll gap 10.Long roll gap press conveyer belt 16 is also by 10 motions of press roll gap, and as shown by arrows, counter-clockwise direction promptly shown in Figure 1 is directly slided to prevent that press braid over braid 18 from facing toward on the arc pressure base, and slided on one deck lubricating oil film thereon.So long roll gap press conveyer belt 16 necessary oil-tighves so just can make press braid over braid 18 and cellulose fibre blank 20 not stain by oil.
Because circle pressure roller 12 usefulness flutings, drilling blind hole or similar approach are made the duct, requiring has second press braid over braid that cellulose fibre blank 20 is clipped between this band and the press braid over braid 18, directly contacts with circle pressure roller 12 to prevent cellulose fibre blank 20.
Long roll gap press conveyer belt of the present invention also is applicable to the long roll gap press that is different from shape shown in Figure 1, and the conveyer belt of this long roll gap press has the long ring that moves in circulating path, supporting internally around the interior support roller and by the interior support roller.In addition, should understand, two press braid over braids lay respectively at each face of cellulose fibre blank 20, can be used on the long roll gap press of this shape or other shapes.
Fig. 2 shows the perspective view of long roll gap press conveyer belt 16.This conveyer belt 16 has inner surface 28 and outer surface 30.Inner surface 28 is polishing, polishing or polishing, so that required surface property to be provided.Outer surface 30 by the same tokens can be polishing, polishing or polishing.
Fig. 3 is the perspective view of another embodiment conveyer belt 32.Conveyer belt 32 has inner surface 34 and outer surface 36.Outer surface 36 has one group of groove 38, for example around conveyer belt 32 vertically on, in order to temporarily to be stored in the water that extrudes by cellulose fibre blank 20 in the press roll gap 10.
Alternative scheme is that the outer surface of conveyer belt also can be made one group of blind hole of arranging by the geometrical pattern of hope, in order to temporary transient storage of water.Fig. 4 is the perspective view of the embodiment conveyer belt 40 of this replacement.Conveyer belt 40 has inner surface 42 and outer surface 44, and outer surface 44 has one group of blind hole, and so-called blind hole is because they do not run through conveyer belt 40 fully.
Long roll gap press conveyer belt of the present invention comprises 3 primary elements: the substrate support bottom; With the fiber felt that the substrate support bottom is connected, this substrate support bottom and fiber felt are formed fiber/felt composite construction; And be coated in fluoropolymer resin on fiber/felt composite construction.
The substrate support bottom can be braiding, non-woven, bonding or produce with the paper machine cloth in the woollen yarn knitting structure of various yarns of use, for example monofilament, stranded monofilament and/or the multifibres yarn that squeezes out by polymer resin material.The resin series of Shi Yonging can be polyamide, polyester, polyurethanes, pi and vistanex for this purpose.
The substrate support bottom can be sheet material or film by above-mentioned various polymer resin material extruding also, and they can make the duct subsequently.The scheme that replaces is that the substrate support bottom can be made up of blank shape fabric, for example the sort of shown in the U.S. Patent No. 427,734 of Johnson.This patent is in conjunction with the reference as the application.The substrate support bottom also can be that the remodeling spiral shown in many United States Patent (USP)s connects conveyer belt, the patent No.4 of Gauthier for example, and shown in 567,077, this patent is in conjunction with the reference as the application.
In addition, this substrate support bottom can form with braiding, non-braiding, bonding, woollen yarn knitting, extruding or blank shape material web helically coiling according to method shown in people's such as Rexfelt the U.S. Patent No. 5,360,656.This patent is in conjunction with the reference as the application.The substrate support bottom can comprise the helically coiling web by this, and its each spiral circle is connected with stitching continuously with next circle, and the substrate support bottom is become for no reason in the vertical.
At last, the substrate support bottom can be a layer structure, and it is made up of two-layer or multilayer, and its each layer can be the structure of the above-mentioned type.
In case the shape of endless loop is made and had to the substrate support structure, have at least one side will engage fiber felt in its two sides.Generally be that fiber felt is joined on the substrate support bottom with knitting (fiber is fixed).Also available additive method replaces, and for example heat fused, hydraulic pressure tangle, and melting fiber or fusible fibers layer can be used for engaging fiber felt.During heat fused standard fiber felt material is placed on the substrate support bottom and is exposed to and be heated to the above temperature of its fusing point and make its joint.When adopting the melting fiber method, the fiber that fusing point is lower mixes or fusion with standard fiber felt material, be placed into the felt that mixes or fusion is made on the substrate support bottom and be exposed to the fusing point that is heated above more low-melting fiber, but the temperature that is lower than standard fiber felt material melting point makes joint thereon.When adopting fusible fibers layer technology, the felt of the fiber that fusing point is lower folds up between standard fiber felt material.All be placed on the substrate support bottom and with knitting and be heated above the fusing point of the lower fiber of fusing point, make its joint but be lower than standard fiber felt material melting point temperature exposure.Felt can be by 1 to 80 Denier (denier) fibrous.
Then polymer resin systems such as polyurethanes are coated on the surface of fiber composite construction and make the suitable uniform depth of its surface seepage by the fiber composite construction.This suitable uniform depth can comprise penetrating this structure fully to any point in the structure, and penetrates any fiber felt that is connected on the substrate support bottom another side fully.Whole substrate supported bottom layer and whole fiber felt are aggregated resin material parcel fully in this case.The fiber felt that under any circumstance is connected on the substrate support bottom can make the degree of depth of resin infiltrated fiber/matrix composite more accurately control, and guarantees that this degree of depth is even basically.The size of fiber felt, weight and density help to control the infiltration of resin.The another side of matrix bottom also can apply separately.Thickness under any situation on resin material coated fiber/matrix composite construction should guarantee polishing and/or polish resin-coated surface the time do not have the fiber composite construction partly to expose.This polymer resin material can be a polyurethanes, if so, preferably uses 100% solid constituent, produces bubble when avoiding polymer resin material to be cured operation subsequently.
Polymer resin systems can use any general technology to apply, and wherein a kind of is many thin passage technology (MTP), and a coating rod that extends across fiber composite construction overall with is used for once applying uniform thick-layer polymer resin material across overall with.The resin bed of Tu Fuing is used to pile up suitable thickness subsequently.As requested, resin bed subsequently can be variety classes or hardness.
Another kind of known technology is a single-screw passage technology (SPS), applies the continuous spirality resin of a fillet on fiber composite construction for no reason.Also can apply the coating layer thickness that resin bed is subsequently wished with accumulation at the one or both sides of this structure.
A kind of powder coating technology wherein applies homogeneous polymer resin material powder bed and melts with heater such as infrared heating device subsequently on the fiber composite construction, can be used as the alternative scheme of MT reconnaissance P and SPS technology.
Above-mentioned coating technology also can be used in combination mutually.
In case the coated on both sides of fiber composite construction behind the resinous coat and resin solidification of desired amount, resin surface can be with abrasive material polishing, polishing or polishing, to satisfy required surface flatness, the not any fiber or the yarn of exposed fibers/matrix composite construction in the final use of long roll gap press conveyer belt.
Fig. 5 shows the drawing in side sectional elevation of first embodiment of long roll gap press conveyer belt 110.Long roll gap press conveyer belt 110 comprises substrate support bottom 112, and it is the dual style by warp thread 114 and weft yarn 116 braidings.The substrate support bottom 112 of imagination is an endless form, and it has inner face 118 and outside 120.
In first embodiment of long roll gap press conveyer belt 110, artificial fibre felt 122 joins the inner face 118 of substrate support bottom 112 and the outside 120 that artificial fibre felt 124 joins substrate support bottom 112 to, respectively extends to small part and penetrates.Substrate support bottom 112 and artificial fibre felt 122,124 have been formed fiber composite construction 126 together.Yet should understand, no matter artificial fibre felt 122 or artificial fibre felt 124 can engage separately.
Then polymer resin material 128 is coated to the outside 120 of fiber composite construction 126 and infiltrates into uniform depth therein.On the artificial fibre felt 124 of fiber composite construction 126 outsides 120, pile up one layer of polymeric resin material 128.After polymer resin material 128 solidified, top layer 130 can be polished, polishing or polishing have the surface characteristic of hope and make long roll gap press conveyer belt 110 for having the integral body of uniform thickness to guarantee it.The polishing on top layer 130, polishing or polishing can not make on any fiber of fiber composite construction 126 or the surface 132 that yarn is exposed to top layer 130, and therefore long roll gap press conveyer belt 110 has polymer resin material 128 top layers 130 of wishing thickness on artificial fibre felt 124.May one group of groove be arranged on vertically shown in Figure 3, perhaps has one group of blind hole by shown in Figure 4, perhaps have other surface configurations, they are to make with cutting, fluting, engraving, boring or other similar approach on top layer 130 subsequently, so that the volume of temporary transient storage by the water of fiber blank in the press roll gap and the extrusion of press braid over braid to be provided, also do not make simultaneously on any fiber of fiber composite construction and the surface 132 that yarn is exposed to top layer 130, long like this roll gap press conveyer belt 110 has the one layer of polymeric resin material 128 of the whole artificial fibre felts 124 of coating.
To be coated to the inner face 118 of fiber composite construction 126 with the identical or different polymer resin material 134 of polymer resin material 128 subsequently, be penetrated on the polymer resin material 128 and the remainder of thorough impregnation fiber composite construction 126.Yet should understand, the inner face 118 of fiber composite construction can at first apply before 120 outside.At the inner face 118 of fiber composite construction 126, the following polymer resin material top layer 136 of having piled up of artificial fibre felt 122.After polymer resin material 134 solidified, top layer 136 polishings, polishing or polishing were the integral body that has uniform thickness with surface characteristic and the long roll gap press conveyer belt 110 that guarantees to wish.As mentioned above, the polishing on top layer 136, polishing or polishing can not make on any fiber of fiber composite construction or the surface 138 that yarn is exposed to top layer 136, and long like this roll gap press conveyer belt 110 has polymer resin material 134 top layers 136 to cover artificial fibre felt 122 at fiber composite construction 126 inner faces 118.
Fig. 6 illustrates the drawing in side sectional elevation of second embodiment of long roll gap press conveyer belt 170.As can be seen, long roll gap press conveyer belt 170 has layer structure as the matrix bottom in the profile of getting by machine direction, and it comprises a main base layer 172.
If secondary base layer 182 is placed on main base layer 172 following and it is the braid over braid that can sew up on the machine, available eyelet is placed it within it with shape for no reason.Main base layer 172 and secondary base layer 182 interconnect subsequently, and method is that knitting artificial fibre felt 188 passes secondary base layer 182 and goes forward side by side and become owner of base layer 172, sets up artificial fibre felt layers 188 below secondary base layer 182.Artificial fibre felt 188 extends to small part and passes main base layer 172.Artificial fibre felt 189 is connected the outside of main base layer 172 and extends to small part and passes it.Main base layer 172, secondary base layer 182, artificial fibre felt 188 and artificial fibre felt 189 form fiber composite construction 190 together.As previously mentioned, should understand, no matter artificial fibre felt 188 or artificial fibre felt 189 can use separately.
At least one deck or number layers of polymer resin material 182 are coated on the secondary base layer 182 following artificial fibrous felts 188 subsequently.Polymer resin material 192 penetrates into artificial fibre felt 188 to reach uniform depth in main base layer 172 by secondary base layer 182.Polymer resin material 192 is piled up the thickness of wishing below artificial fibre felt 188, form top layer 194.In case reach the thickness of hope, polymer resin material 192 is cured, and in case solidify, polish on top layer 194, polishing or polishing, must not expose any artificial fibrous felt 188 on the surface 196 on top layer 194, the surface characteristic and long roll gap press conveyer belt 170 integral body that have hope with assurance top layer 194 have homogeneous thickness.As previously mentioned, the polishing on top layer 194, polishing or polishing must not be on the surface 196 on top layer 194 any fiber or the yarn of exposed fibers/matrix composite construction 190, long like this roll gap press conveyer belt 170 inner faces at fiber composite construction 190 have the top layer 194 of the polymer resin material 192 of the required thickness on artificial fibre felt 188.
The polymer resin material 198 identical or different with polymer resin material 192 is coated on the artificial fibre felt 189 of original substrate layer 172 outside subsequently, permeate it until polymer resin material 192, and the remainder of thorough impregnation fiber composite construction 190.Yet also must understand, the outside of fiber composite construction 190 can at first apply before applying inner face.The top layer 200 of accumulation polymer resin material 198 on the artificial fibre felt 189 of the outside of fiber composite construction 190.After polymer resin material 198 solidified, top layer 200 can be polished, polishing or polishing have homogeneous thickness to guarantee the surface characteristic and long roll gap press conveyer belt 170 integral body of wishing.As previously mentioned, the polishing on top layer 200, polishing or polishing must not be on the surface 202 on top layer 200 any fiber or the yarn of exposed fibers/matrix composite construction 190, long like this roll gap press conveyer belt 170 has the top layer 200 of the polymer resin material 198 of the hope thickness on artificial fibre felt 189 in the outside of fiber composite construction 190.
As shown in Figure 6, main matrix top layer 172 is can sew up braid over braid on the machine, and the infiltration of polyurethane resin 192 is control like this, makes suture ring 176 keep open, does not have polymer resin material 192 in other words.In this manner, pin 178 can be removed after polymer resin material 192 solidifies and polishes, and polymer resin material 192 and secondary base layer 182 are cut by top, but do not damage suture ring 176, long roll gap press conveyer belt 170 is put into flat not stitched version so that transport and on long roll gap press, install subsequently.The method of installing is to intersect to place suture ring 176, and the passage that limits by intersection suture ring 176 inserts pin 178.Be coated in the incision closure of incisions of polymer resin material 192 subsequently with resin plaster, make seam impermeable.After this resin plaster is solidified and polishing, so as with polymer resin material 192 remainder fusion.
The long roll gap press of the present invention conveyer belt transmits than the long roll gap press of prior art and has many advantages.
Exist the artificial fibre felt can make long roll gap press conveyer belt manufactory control resin infiltrate the degree of depth of conveyer belt at the one or both sides of substrate support bottom.In other words, fiber felt helps to set up uniform resin penetration, and the degree of depth of any part extremely penetrates the fiber composite construction fully by part.Do not have artificial fibrous felt, resin penetration matrix bottom is quite inhomogeneous.They in long roll gap press conveyer belt, do not allow inhomogeneities, because can cause partial high pressure power district in roll gap.Can cause the sheet material dehydration inhomogeneous successively again.In addition, when the conveyer belt coated on both sides, inhomogeneous resin penetration may cause regional area in conjunction with bad and use in subsequently resin layering.Use the artificial fibrous felt control resin penetration degree of depth to solve this two problems.
In addition, the artificial fibre felt plays the effect of graft polymerization resin material and substrate support bottom, the needs that engage coating or internal layer have been cancelled, thereby prevented resin and its layering, this is to provide higher coating surface because of the substrate support bottom comparison artificial fibre felt with no artificial fibrous felt.
The artificial fibre felt also becomes the part of fiber reinforced resin based body, and it has eliminated the interlayer layering, promptly piles up resin bed layering each other.Also having an additional advantage is that fiber reinforced resin based body does not more subject to stress cracking and crackle expansion.In addition, whole conveyer belt may be than transmission tape thickness in the past, because resinous coat is enhanced with the artificial fibre felt.
Bigger compressibility on the also long roll gap press of the artificial fibre felt conveyer belt Z direction, and than the bigger elastic recovery of long roll gap press conveyer belt of prior art.
At last, the artificial fibre felt allows to produce than reality and uses the thicker and heavier long roll gap press conveyer belt of no knitting matrix bottom, the hysteresis effect that long roll gap press conveyer belt compresses repeatedly and relaxes and cause because the artificial fibre felt has reduced.
List examples more of the present invention below, but should be not limited to following example.
The embodiment I
Manufacturing has the substrate support bottom of main base layer and secondary base layer.Main base layer is for having the two-layer fabric of 0.35mmMD (along machine direction) monofilament yarn and 0.40mmCD (cross-machine direction) monofilament yarn.The density of MD yarn is that the density of 100 yarn/dm and CD yarn is 157 yarn/dm in main base layer.
The secondary base layer is the woven with 0.25mmMD monofilament yarn and 4 bundle 0.20mmCD monofilament yarns, promptly has the monofilament yarn of 4 0.20mm monofilament strands Shu Hecheng.Shown in Fig. 6 embodiment, the secondary base layer is to be enclosed within the interior endless loop of no auspicious ring that main base layer forms.
Weight with substrate support bottom of main base layer secondary base layer is 855g/m
2
With knitting the fiber felt of 11dtex (10 Denier) is placed and joined on the substrate support bottom, the density of the fiber felt of placement is 1135g/m
2, it 10% is placed on the main base layer of substrate support bottom, that is to say the outside of the endless loop that forms at the substrate support bottom.The unit are gross weight of fiber composite construction (substrate support bottom and artificial fibre felt) is 1990g/m
2
This fiber composite construction further handle to density be 0.423g/cm
3With thickness be 0.467cm.
By multi-pass the poly-amino resins coating of viscosity 6000cps is coated in the secondary base layer of fiber composite construction, i.e. the inner face of the endless loop that forms of substrate support bottom.Resin bed is piled up a little higher than surface fiber plane.The fiber composite construction of resin impregnation is exposed to oven dry and cured resin in the thermal source.Carry out the smoothness of surface grinding, must not expose any surperficial fiber felt to guarantee to require.
The cross section inspection of conveyer belt shows that resin has infiltrated into secondary matrix laminar surface, and resin " coating " is present in about 40% conveyer belt thickness.If there is no fiber felt in the purposes of all encapsulation situations, then resin will infiltrate and penetrate the main base layer and the secondary base layer of substrate support bottom.
Can apply the polyurethane resin coating subsequently on the original substrate layer of fiber composite construction, promptly be coated to the outside of the endless loop that the substrate support bottom forms, and make its infiltration by main base layer and secondary base layer and the top layer that forms a little higher than surface fiber plane in the outside of main base layer.Behind the resin solidification, outer surface can polish, and must not expose any surperficial fiber felt.
The example II
By the manufacturing of example I with process same fiber composite construction.Use has the polyurethane resin coating of viscosity 9000cps, is coated to the secondary base layer of fiber composite construction once more with the multi-pass method.Resin bed is deposited in a little higher than surface fiber of the inner face plane of the endless loop of substrate support bottom formation.Thermoplastic resin-impregnated fibers/matrix composite construction is exposed to thermal source oven dry and cured resin.Carry out the smoothness of surface grinding, must not expose any fiber felt to guarantee to require.
The cross section inspection of conveyer belt shows that resin has penetrated into the fiber felt part, but does not reach the secondary base layer.Still like that, if there is no fiber felt, then resin will infiltrate and penetrate the main base layer and the secondary base layer of substrate support bottom.
As the example I, the main base layer of fiber composite construction can apply the polyurethane resin coating subsequently, promptly be coated to the outside of the endless loop that the substrate support bottom forms, and make its infiltration by main base layer and secondary base layer and the top layer that forms a little higher than surface fiber plane in the outside of main base layer.Behind the resin solidification, outer surface can polish, and must not expose any surperficial fiber felt.
In general, the manufacture characteristic of fiber composite construction, fluoropolymer resin type, and the various performances that are used for coated fiber/matrix composite structure resin comprise that viscosity is all under the makers' control of conveyer belt.For example, if the used fiber composite construction of example I and II need be with increasing its density and reducing original thickness and retrofit, perhaps change fiber felt and be of a size of thinner material, the resin system that then uses in the example I as 3.3dtex (3 Denier) will infiltrate the littler basic uniform distance of felt structure.
The data group that draws in the changeable a series of experiments of the manufacturing characteristic of fiber composite construction, used resin system and coating process makes people can predict the length of penetration of the special resin of handling for given fiber composite construction particular form.
For those people that are familiar with this technology, above-mentioned improvement is conspicuous, but improvement of the present invention should not depart from the scope of appended claims.
Claims (30)
1. one kind long roll gap press conveyer belt is used for the long roll gap press of paper machine, and above-mentioned long roll gap press conveyer belt has:
The substrate support bottom, above-mentioned substrate support bottom is the endless loop shape, has outside and inner face;
Be connected the above-mentioned inner face of above-mentioned substrate support bottom and the ground floor artificial fibre felt of outside, and extend to small part and penetrate it, above-mentioned substrate support bottom and above-mentioned ground floor artificial fibre felt are formed fiber/felt composite construction together;
The above-mentioned fiber composite construction of ground floor polymeric resin material impregnates to the above-mentioned inner face from above-mentioned substrate support bottom extremely wherein has uniform depth, above-mentioned ground floor polymer resin material forms the top layer and has polished surface on above-mentioned any ground floor artificial fibre felt of the above-mentioned inner face of above-mentioned substrate support bottom, and polishing the time does not have above-mentioned ground floor artificial fibre felt to be exposed on the above-mentioned polished surface; And
To above-mentioned ground floor polymer resin material, above-mentioned second layer polymer resin material forms the top layer to the above-mentioned fiber composite construction of second layer polymeric resin material impregnates on above-mentioned any ground floor artificial fibre felt of the above-mentioned outside of above-mentioned substrate support bottom from the above-mentioned outside of above-mentioned substrate support bottom.
2. according to the described long roll gap press conveyer belt of claim 1, it is characterized in that above-mentioned second polymer resin material has polished surface, and polishing the time there is not above-mentioned ground floor artificial fibre felt to be exposed on the above-mentioned polished surface.
3. according to the described long roll gap press conveyer belt of claim 1, it is characterized in that the braid over braid composition of above-mentioned substrate support bottom for from comprise braiding, non-braiding, bonding and braid over braid woollen yarn knitting, selecting.
4. according to the described long roll gap press conveyer belt of claim 1, it is characterized in that above-mentioned substrate support bottom is the polymer resin material extrusion plate.
5. according to the described long roll gap press conveyer belt of claim 1, it is characterized in that the blank shape braid over braid of above-mentioned substrate support bottom for extruding.
6. according to the described long roll gap press conveyer belt of claim 1, it is characterized in that above-mentioned substrate support bottom is that spiral connects braid over braid.
7. according to the described long roll gap press conveyer belt of claim 1, it is characterized in that above-mentioned substrate support bottom is one group of helically coiling circle web, each circle is connected with stitching continuously with adjacent turn, above-mentioned substrate support bottom is for no reason in the vertical, and above-mentioned web is selected from braid over braid, polymeric material extrusion plate and the extrusion billet shape braid over braid of braiding, non-braiding, bonding, woollen yarn knitting.
8. according to the described long roll gap press conveyer belt of claim 1, it is characterized in that above-mentioned substrate support bottom is can sew up braid over braid on the machine.
9. according to the described long roll gap press conveyer belt of claim 1, it is characterized in that above-mentioned substrate support bottom is the layer structure with at least 2 layers of base layer.
10. according to the described long roll gap press conveyer belt of claim 9, it is characterized in that above-mentioned at least 2 layers is main base layer and secondary base layer.
11., it is characterized in that one of above-mentioned at least main base layer and above-mentioned secondary base layer are selected braid over braids from the braid over braid of braiding, non-braiding, bonding and woollen yarn knitting according to the described long roll gap press conveyer belt of claim 10.
12., it is characterized in that one of above-mentioned at least main base layer and above-mentioned secondary base layer are the polymer resin material extrusion plate according to the described long roll gap press conveyer belt of claim 10.
13., it is characterized in that one of above-mentioned at least main base layer and above-mentioned secondary base layer blank shape braid over braid for extruding according to the described long roll gap press conveyer belt of claim 10.
14., it is characterized in that one of above-mentioned at least main base layer and above-mentioned secondary base layer are the screw engagement braid over braid according to the described long roll gap press conveyer belt of claim 10.
15. according to the described long roll gap press conveyer belt of claim 10, it is characterized in that one of above-mentioned at least main base layer and above-mentioned secondary base layer are one group of helically coiling circle web, each circle is connected with stitching continuously with adjacent turn, one of above-mentioned main base layer and above-mentioned secondary base layer are for no reason in the vertical, and above-mentioned web is to select from the blank shape braid over braid of braid over braid, polymeric material extrusion plate and the extruding of braiding, non-braiding, bonding, woollen yarn knitting.
16., it is characterized in that one of above-mentioned at least main base layer and above-mentioned secondary base layer are can sew up braid over braid on the machine according to the described long roll gap press conveyer belt of claim 10.
17., it is characterized in that above-mentioned ground floor artificial fibre felt engages with knitting according to the described long roll gap press conveyer belt of claim 1.
18., it is characterized in that above-mentioned ground floor artificial fibre felt engages with hydraulic pressure entanglement method according to the described long roll gap press conveyer belt of claim 1.
19., it is characterized in that the above-mentioned ground floor artificial fibre felt legal joint of hot melt according to the described long roll gap press conveyer belt of claim 1.
20., it is characterized in that above-mentioned ground floor artificial fibre felt engages with the melting fiber method according to the described long roll gap press conveyer belt of claim 1.
21., it is characterized in that above-mentioned ground floor artificial fibre felt engages with the fusible fibers layer according to the described long roll gap press conveyer belt of claim 1.
22. according to the described long roll gap press conveyer belt of claim 1, it is characterized in that above-mentioned second layer polymer resin material top layer, the above-mentioned outside of above-mentioned substrate support bottom has one group of groove, be used for temporarily storing the moisture that extrudes by fiber blank press braid over braid in the press roll gap.
23. according to the described long roll gap press conveyer belt of claim 1, it is characterized in that the above-mentioned second polymer resin material top layer, the above-mentioned outside of above-mentioned substrate support bottom has one group of blind hole, be used for temporarily storing the moisture that extrudes by fiber blank and press braid over braid in the press roll gap.
24. according to the described long roll gap press conveyer belt of claim 1, it is characterized in that it also has the second layer artificial fibre felt that engages with another the above-mentioned inner face and the outside of above-mentioned substrate support bottom, and extend to small part and penetrate it, above-mentioned ground floor polymer resin material forms the top layer on any above-mentioned second layer artificial fibre felt of the above-mentioned inner face of above-mentioned substrate support bottom, do not have above-mentioned second layer artificial fibre felt to be exposed on the above-mentioned polished surface of above-mentioned ground floor polymer resin material, and above-mentioned second layer polymer resin material form the top layer on any above-mentioned second layer artificial fibre felt of the above-mentioned outside of above-mentioned substrate support bottom.
25., it is characterized in that above-mentioned second layer artificial fibre felt engages with knitting according to the described long roll gap press conveyer belt of claim 24.
26., it is characterized in that above-mentioned second layer artificial fibre felt engages with hydraulic pressure entanglement method according to the described long roll gap press conveyer belt of claim 24.
27., it is characterized in that the above-mentioned second layer artificial fibre felt legal joint of hot melt according to the described long roll gap press conveyer belt of claim 24.
28., it is characterized in that above-mentioned second layer artificial fibre felt engages with the melting fiber method according to the described long roll gap press conveyer belt of claim 24.
29., it is characterized in that above-mentioned second layer artificial fibre felt engages with the fusible fibers layer according to the described long roll gap press conveyer belt of claim 24.
30., it is characterized in that above-mentioned second layer polymer resin material has polished surface, and do not have above-mentioned second layer artificial fibre felt to be exposed on the above-mentioned polished surface according to the described long roll gap press conveyer belt of claim 24.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US8403698A | 1998-05-22 | 1998-05-22 | |
| US084,036 | 1998-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1236842A true CN1236842A (en) | 1999-12-01 |
Family
ID=22182481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99105239A Pending CN1236842A (en) | 1998-05-22 | 1999-04-22 | Conveying belts for shoe long roller presses |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0960975A3 (en) |
| JP (1) | JP2000017594A (en) |
| KR (1) | KR19990088374A (en) |
| CN (1) | CN1236842A (en) |
| AU (1) | AU1834199A (en) |
| BR (1) | BR9901025A (en) |
| CA (1) | CA2261504A1 (en) |
| ID (1) | ID23463A (en) |
| NO (1) | NO992475L (en) |
| ZA (1) | ZA992099B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1816662B (en) * | 2003-07-02 | 2010-05-12 | 阿尔巴尼国际公司 | Substrate for endless belt for use in papermaking applications |
| CN102216524A (en) * | 2008-07-24 | 2011-10-12 | 福伊特专利公司 | Press felt and method for producing the same |
| CN1816660B (en) * | 2003-07-02 | 2012-01-04 | 阿尔巴尼国际公司 | Low permeability textile substrate for a two-sided coated product |
| CN101946039B (en) * | 2007-12-19 | 2015-05-20 | 沃依特专利有限责任公司 | Transport belt and method for the production thereof |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10040828B4 (en) * | 2000-08-21 | 2006-06-14 | Huyck-Austria Ges.M.B.H. | felt |
| JP3698984B2 (en) * | 2000-11-10 | 2005-09-21 | ヤマウチ株式会社 | Shoe press belt |
| US6491794B2 (en) * | 2001-03-29 | 2002-12-10 | Albany International Corp. | Base structure for seamed papermaker's fabrics |
| GB0204310D0 (en) * | 2002-02-23 | 2002-04-10 | Voith Fabrics Heidenheim Gmbh | Edge balanced belt |
| US7144479B2 (en) * | 2003-04-16 | 2006-12-05 | Albany International Corp. | Method for increasing press fabric void volume by laser etching |
| JP5148973B2 (en) * | 2007-11-20 | 2013-02-20 | イチカワ株式会社 | Felt for papermaking |
| JP5731773B2 (en) * | 2010-09-02 | 2015-06-10 | ヤマウチ株式会社 | Press belt, shoe press roll, and method for manufacturing press belt |
| US9341232B2 (en) * | 2013-11-08 | 2016-05-17 | Gates Corporation | Two-component cord and method for molded power transmission belts |
| DE102021119500A1 (en) | 2021-07-28 | 2023-02-02 | Voith Patent Gmbh | Covering made of plastic film with suction cup-like indentations |
| JP2024034396A (en) * | 2022-08-31 | 2024-03-13 | イチカワ株式会社 | Papermaking belt |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61252389A (en) * | 1985-04-25 | 1986-11-10 | 市川毛織株式会社 | Papermaking press belt |
| US4946731A (en) * | 1989-09-28 | 1990-08-07 | Albany International Corp. | Construction for an extended nip press belt |
| NZ272169A (en) * | 1994-06-09 | 1997-06-24 | Albany Int Corp | Transfer belt for papermaking machine: seam construction: pintles passed through seaming loops |
-
1999
- 1999-02-12 CA CA002261504A patent/CA2261504A1/en not_active Abandoned
- 1999-02-16 EP EP99660026A patent/EP0960975A3/en not_active Withdrawn
- 1999-02-22 AU AU18341/99A patent/AU1834199A/en not_active Abandoned
- 1999-03-16 ZA ZA9902099A patent/ZA992099B/en unknown
- 1999-03-24 BR BR9901025-9A patent/BR9901025A/en not_active Application Discontinuation
- 1999-04-22 CN CN99105239A patent/CN1236842A/en active Pending
- 1999-05-19 ID IDP990460D patent/ID23463A/en unknown
- 1999-05-19 KR KR1019990017937A patent/KR19990088374A/en active IP Right Grant
- 1999-05-21 NO NO992475A patent/NO992475L/en not_active Application Discontinuation
- 1999-05-24 JP JP11143009A patent/JP2000017594A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1816662B (en) * | 2003-07-02 | 2010-05-12 | 阿尔巴尼国际公司 | Substrate for endless belt for use in papermaking applications |
| CN1816660B (en) * | 2003-07-02 | 2012-01-04 | 阿尔巴尼国际公司 | Low permeability textile substrate for a two-sided coated product |
| CN101946039B (en) * | 2007-12-19 | 2015-05-20 | 沃依特专利有限责任公司 | Transport belt and method for the production thereof |
| CN102216524A (en) * | 2008-07-24 | 2011-10-12 | 福伊特专利公司 | Press felt and method for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| ID23463A (en) | 2000-04-27 |
| CA2261504A1 (en) | 1999-11-22 |
| EP0960975A2 (en) | 1999-12-01 |
| AU1834199A (en) | 1999-12-02 |
| NO992475L (en) | 1999-11-23 |
| ZA992099B (en) | 1999-11-23 |
| EP0960975A3 (en) | 2001-01-17 |
| KR19990088374A (en) | 1999-12-27 |
| NO992475D0 (en) | 1999-05-21 |
| JP2000017594A (en) | 2000-01-18 |
| BR9901025A (en) | 2000-03-28 |
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