EP3030713A1 - Clothing - Google Patents
ClothingInfo
- Publication number
- EP3030713A1 EP3030713A1 EP14741629.1A EP14741629A EP3030713A1 EP 3030713 A1 EP3030713 A1 EP 3030713A1 EP 14741629 A EP14741629 A EP 14741629A EP 3030713 A1 EP3030713 A1 EP 3030713A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- covering according
- viscose
- basic structure
- mixture
- covering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000835 fiber Substances 0.000 claims abstract description 29
- 229920000297 Rayon Polymers 0.000 claims abstract description 15
- 239000004627 regenerated cellulose Substances 0.000 claims abstract description 13
- 239000004744 fabric Substances 0.000 claims description 23
- 229920002678 cellulose Polymers 0.000 claims description 18
- 239000001913 cellulose Substances 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 11
- 239000010408 film Substances 0.000 claims description 5
- 238000005470 impregnation Methods 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 5
- 239000002759 woven fabric Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 238000005056 compaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000011148 porous material Substances 0.000 description 4
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
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
- D21F1/0036—Multi-layer screen-cloths
-
- 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
-
- 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
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
Definitions
- the invention is based on a covering, in particular a covering, for use in a machine for producing a fibrous web, such as a paper, board, tissue or nonwoven web, according to the preamble of claim 1.
- Coverings are used in industrial applications in many machines. Paper machines, but also machines for the production of nonwovens, such as fleece, filter media, etc.
- the coverings usually serve to support and guide as well as the deflection in such machines.
- clothing is found in the forming section, where it receives the paper suspension from fibers, additives and water from the former, drains it first, and then feeds it to the press.
- press felts are provided, which serve in addition to the further drainage of the paper web and the pre-smoothing of the web.
- the surface of the fabric is designed so that neither mechanical nor hydraulic markings are left in the paper web, which would be visible in the final product and would affect its quality.
- Other fabrics, such as transfer belts guide the paper web further to the dryer section, where webbing in the form of dryer fabrics to which increased temperature tolerance requirements are imposed.
- the clothing In the press section, as already noted, it is very important to design the clothing in such a way that the marking tendency is minimized, the clothing has the same physical properties as possible over its entire service life, such as thickness and permeability to liquids and gases, and a consistently high liquid receiving volume having. Especially the latter is crucial for the quality of the final product.
- the recording volume When a fabric compacts over the course of its service life, the recording volume is reduced and the Permeability by laying the pores decreases, less water is absorbed from the paper web and wet leaves the web the press section. The consequences are increased energy costs, runnability problems and quality problems in the final product.
- Fabrics of the initially mentioned type are known in a multitude of variants, which may have basic structures in the form of woven fabrics, laid, knitted fabrics, spiral structures, spiraled sets of threads or ribbons which are combined with one or more other components such as staple fiber layers, membranes, plastic films, injected particles, Impregnations or similar combined to avoid the above problems.
- At least one liquid-receiving and / or liquid-storing structure arranged on the load-receiving basic structure is provided, which is formed porous like a sponge cloth and contains or substantially consists of cellulose.
- a structure consisting essentially of cellulose is understood as meaning a structure in which more than 50% by weight of the structure consists of cellulose.
- Cellulose is a natural substance that is used in a variety of applications in the textile industry. The resulting fibers and textiles are environmentally friendly to produce, resort to renewable resources and are biodegradable. Further advantageous aspects and design variants are specified in the subclaims.
- the cellulose may preferably be present as regenerated cellulose, viscose or as a mixture thereof.
- a plurality of layer-forming structures of regenerated cellulose, viscose or a mixture thereof can be arranged on one or both sides of the basic structure and / or in the basic structure.
- the storage capacity of the clothing can thereby be increased and evened out again.
- the basic structure may also be impregnated or foamed with a solution containing regenerated cellulose, viscose or a mixture thereof.
- a solution containing regenerated cellulose, viscose or a mixture thereof may also be impregnated or foamed with a solution containing regenerated cellulose, viscose or a mixture thereof.
- the sponge cloth-like structure can be closed-pore or particularly preferably open-pored.
- the sponge cloth-like porous structure of regenerated cellulose, viscose or a mixture thereof can advantageously be in the form of roll goods which can be processed quickly and easily.
- individual pieces that are connectable to each other can be processed.
- a one-piece, especially endless production is conceivable and possible.
- the basic structure can be formed as a woven fabric, scrim, knitted fabric, knitted fabric, extrudate, cast, pressure, spiral structure, sintered structure, spiraled fabric structure or fleece layer or knitted fabric bundles.
- fabrics can be produced which are optimized for any press configuration or for other positions.
- the covering may comprise further layers of staple fibers, membranes, films and / or films in order to further improve the property profile.
- the fabric in particular the sponge cloth-like layer, may be substantially biodegradable.
- the sponge cloth-like porous structure may be formed as a continuous structure or as a predominantly continuous structure.
- Sponge cloth-like structures made of cellulose are usually prepared so that cellulose is brought into solution - for example by dissolution in CS 2 .
- This Solution are usually fed particles.
- This particle-laden solution is shaped-for example, as a layer, and solidified by expelling the solvent. By removing or dissolving the particles, the pores of the structure are formed.
- a cellulose composite, such as arises from such a process, is referred to in the context of this application as a continuous structure.
- This structure differs significantly from cellulosic structures resulting from the juxtaposition, overlay or network formation of cellulosic fibers.
- a predominantly continuous structure denotes a continuous structure as defined above containing a proportion of discrete particles.
- the particles may be cellulose fibers, but may also be cotton fibers, mineral particles such as e.g. Salts or synthetic polymer fibers such as polyamide fibers, polyethylene fibers, polyester fibers or the like.
- the proportion of these particles in a predominantly continuous structure is less than 50% by weight, preferably less than 35% by weight, very particularly preferably less than 25% by weight.
- fabrics are indispensable in machines for making fibrous webs such as paper, board, tissue or nonwoven webs for backing, routing and dewatering.
- fibrous webs such as paper, board, tissue or nonwoven webs for backing, routing and dewatering.
- press felts are in use, which absorb a significant part of the liquid from the fiber web, store and later return to appropriate collection devices again.
- the press felts are usually in the form of a load-bearing basic structure, on which additional layers with different functions can be arranged.
- the basic structure can be present in various forms in a well-known manner. These can be woven, laid, knitted, knitted, cast, printed, sintered structures, spirally wound structures or spiral structures.
- Tissues are characterized by threads that intersect substantially at right angles and that can be interwoven in patterns. They can be one, two or more layers, whereby the individual layers can already be woven together during the weaving process. Combinations of several separate individual layers are possible, which can be fixed to each other by connecting or sewing threads after the production of the individual layers.
- Layers also have two or more layers of intersecting yarns, which, however, are only stacked on each other and not interwoven.
- the gel layers may be bonded together by suitable means such as the incorporation of adhesive or fusing bicomponent fibers.
- Cast, printed and sintered structures can be produced, for example, as lattice-like structures or in another suitable form, depending on the manufacturing process.
- Spiral structures consist of spirals, which are placed side by side and interlocking and connected by plug wires.
- Spiralized structures can be made from spirally wound ribbon or from bundles of threads combined with a nonwoven. They may be overlapping or bumped and suitably e.g. be joined by laser welding or ultrasonic treatment at their edges.
- Knitted fabrics and knits are non-woven structures made of threads, which have, for example, mesh-like shapes such as knit or crocheted structures.
- the load-bearing basic structure must be characterized by high load capacity on train, since the fabrics are held in the machine to train and are subject to many changing roller speeds, which induce high tensile forces in the fabrics. Tearing off the fabric usually results in at least machine downtime, which is expensive for the operator, or damage to the machine and endangerment of personnel.
- Materials for the yarns of the basic structure are, for example, polyamide, in particular PA6, PA6.6, PA6.6T, PA6.10 and PA6.12, also polyester, PEEK, PET and other common plastics.
- the other structures which are connected to the load-bearing basic structure, have their main task in receiving and storing the water absorbed from the fiber web and continue to prevent rewetting of the fiber web after leaving the press, the so-called. Rewetting.
- press felts have at least one ply of staple fibers which are in the form of rectified fibers prepared by carding processes.
- the fibers may have the same or different lengths and fiber thicknesses and consist of different materials.
- the staple fiber layers define a part of the so-called void volume, ie the volume in the interior of the press felt which is available for receiving or storing water; on the other hand, the surface of the press felt can be influenced by suitable selection of the fibers. If coarse fibers are chosen, the press felt is more water permeable and less prone to compaction, but the rewetting tendency is also higher. Fine fibers result in less permeable felts with little tendency for rewetting, but too fast compaction.
- the press felt according to the invention is characterized by a high Wasserability- and water storage volume and a low tendency to Rewetting and compaction and also produced using renewable resources.
- At least one porous, sponge cloth-like structure is arranged, which consists of cellulose such as regenerated cellulose, viscose or a mixture thereof.
- cellulose such as regenerated cellulose, viscose or a mixture thereof.
- Wettex® sponge wipes from Freudenberg and shows the desired properties in terms of water absorption and water storage.
- cellulose is converted into a soluble form by chemical modification and brought into solution, an endless fiber can be produced in a spinning process.
- Regenerated cellulose is formed when, during the spinning process, the chemical change is reversed so that the continuous fiber consists of chemically unaltered cellulose.
- Viscose is produced industrially from the base cellulose, using the viscose process. Sawdust is cooked with chemicals to remove the cellulose. Subsequently, the cellulose is processed with water, sodium hydroxide solution and carbon disulfide to a Viskosebrei and solidified by spinnerets to Viskosegarn.
- the at least one sponge cloth-like structure can be present as an endless roll product or in the form of pieces which are suitably connected to one another. Also, a one-piece, large-scale production such as spraying the cellulose on an endlessly woven basic structure are conceivable and possible. Furthermore, it is possible to supply the cellulose in a dissolved state of the basic structure and thereby impregnate or to foam the basic structure with the sponge cloth-like structure after their introduction by adding suitable agents.
- the individual components may be mechanically interconnected, e.g. needled or otherwise suitable, e.g. by the application of adhesives, welding, melting, laminating or extruding.
- a combination with other components such as other staple fiber layers, films, films, membranes, particles or impregnations are still possible and conceivable.
- Such a formed press felt is characterized by a resource-saving composition, since a large proportion of synthetic fibers from the petrochemical industry can be replaced without sacrificing performance by using fibers from renewable resources.
- a press felt is at least partially biodegradable, which additionally reduces the environmental impact.
- the sponge cloth-like structure gives the press felt a uniform pressure distribution over the entire surface. The fine pores of the sponge cloth-like structure develop strong capillary forces, so that the fiber web is dehydrated excellent.
- the stored in the press felt water can be removed without the aid of additional suction boxes already in the press nip again from the felt, which brings significant savings in energy consumption.
Landscapes
- Nonwoven Fabrics (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013215733 | 2013-08-09 | ||
PCT/EP2014/065671 WO2015018632A1 (en) | 2013-08-09 | 2014-07-22 | Clothing |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3030713A1 true EP3030713A1 (en) | 2016-06-15 |
EP3030713B1 EP3030713B1 (en) | 2019-04-17 |
Family
ID=51211786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14741629.1A Active EP3030713B1 (en) | 2013-08-09 | 2014-07-22 | Clothing |
Country Status (4)
Country | Link |
---|---|
US (1) | US9938665B2 (en) |
EP (1) | EP3030713B1 (en) |
CN (1) | CN105473784B (en) |
WO (1) | WO2015018632A1 (en) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4571359A (en) * | 1984-12-18 | 1986-02-18 | Albany International Corp. | Papermakers wet-press felt and method of manufacture |
CN1034938A (en) * | 1988-01-27 | 1989-08-23 | 中国纺织大学 | The preparation of expansion cellulose sponge |
DE59604227D1 (en) | 1996-01-25 | 2000-02-24 | Conrad Munzinger & Cie Ag Olte | Material web and process for its production |
GB9726722D0 (en) | 1997-12-18 | 1998-02-18 | Scapa Group Plc | Papermaking fabric surface structure |
US7135096B2 (en) * | 2003-12-23 | 2006-11-14 | Astenjohnson, Inc. | Press felt with improved dewatering capability |
US7351307B2 (en) | 2004-01-30 | 2008-04-01 | Voith Paper Patent Gmbh | Method of dewatering a fibrous web with a press belt |
EP1709242A2 (en) * | 2004-01-30 | 2006-10-11 | Voith Patent GmbH | Advanced dewatering system |
US7989368B2 (en) | 2005-08-26 | 2011-08-02 | Voith Patent Gmbh | Polymer particles mixed with fibers and products such as press fabrics made therefrom |
DE102008040706A1 (en) * | 2008-07-24 | 2010-01-28 | Voith Patent Gmbh | Press felt and process for its production |
KR101550647B1 (en) | 2008-09-11 | 2015-09-07 | 알바니 인터내셔널 코포레이션 | Permeable belt for the manufacture of tissue, towel and nonwovens |
-
2014
- 2014-07-22 CN CN201480044432.0A patent/CN105473784B/en active Active
- 2014-07-22 EP EP14741629.1A patent/EP3030713B1/en active Active
- 2014-07-22 WO PCT/EP2014/065671 patent/WO2015018632A1/en active Application Filing
- 2014-07-22 US US14/911,068 patent/US9938665B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2015018632A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN105473784A (en) | 2016-04-06 |
CN105473784B (en) | 2019-01-08 |
EP3030713B1 (en) | 2019-04-17 |
US9938665B2 (en) | 2018-04-10 |
US20160177506A1 (en) | 2016-06-23 |
WO2015018632A1 (en) | 2015-02-12 |
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