EP0786550B1 - Materialbahn sowie Verfahren zu deren Herstellung - Google Patents

Materialbahn sowie Verfahren zu deren Herstellung Download PDF

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Publication number
EP0786550B1
EP0786550B1 EP96101069A EP96101069A EP0786550B1 EP 0786550 B1 EP0786550 B1 EP 0786550B1 EP 96101069 A EP96101069 A EP 96101069A EP 96101069 A EP96101069 A EP 96101069A EP 0786550 B1 EP0786550 B1 EP 0786550B1
Authority
EP
European Patent Office
Prior art keywords
material web
backing
plastics layer
process according
soluble
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.)
Expired - Lifetime
Application number
EP96101069A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0786550A1 (de
Inventor
Michael Dr.-Ing. Gass
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Munzinger Conrad and Cie AG
Original Assignee
Munzinger Conrad and Cie AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to ES96101069T priority Critical patent/ES2144162T3/es
Application filed by Munzinger Conrad and Cie AG filed Critical Munzinger Conrad and Cie AG
Priority to DE59604227T priority patent/DE59604227D1/de
Priority to DK96101069T priority patent/DK0786550T3/da
Priority to PT96101069T priority patent/PT786550E/pt
Priority to AT96101069T priority patent/ATE189016T1/de
Priority to EP96101069A priority patent/EP0786550B1/de
Priority to PCT/EP1997/000215 priority patent/WO1997027362A1/de
Priority to KR1019970706656A priority patent/KR100286511B1/ko
Priority to CA002213841A priority patent/CA2213841C/en
Priority to CZ19972996A priority patent/CZ293405B6/cs
Priority to PL97322383A priority patent/PL182272B1/pl
Priority to TR97/01032T priority patent/TR199701032T1/xx
Priority to BR9704636A priority patent/BR9704636A/pt
Priority to SI9730030T priority patent/SI0817886T1/xx
Priority to SK1300-97A priority patent/SK279612B6/sk
Priority to US08/913,878 priority patent/US6057255A/en
Priority to EP97901065A priority patent/EP0817886B1/de
Priority to AU14445/97A priority patent/AU696610B2/en
Priority to TW086100629A priority patent/TW339384B/zh
Priority to MYPI97000233A priority patent/MY119214A/en
Priority to ZA9700598A priority patent/ZA97598B/xx
Publication of EP0786550A1 publication Critical patent/EP0786550A1/de
Priority to MX9707245A priority patent/MX9707245A/es
Priority to NO19974421A priority patent/NO311229B1/no
Application granted granted Critical
Publication of EP0786550B1 publication Critical patent/EP0786550B1/de
Priority to GR20000400505T priority patent/GR3032802T3/el
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D21F1/0063—Perforated sheets
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3008—Woven fabric has an elastic quality
    • Y10T442/3016—Including a preformed layer other than the elastic woven fabric [e.g., fabric or film or foil or sheet layer, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3008—Woven fabric has an elastic quality
    • Y10T442/3024—Including elastic strand or strip
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3854—Woven fabric with a preformed polymeric film or sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3854—Woven fabric with a preformed polymeric film or sheet
    • Y10T442/3862—Ester condensation polymer sheet or film [e.g., polyethylene terephthalate, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3854—Woven fabric with a preformed polymeric film or sheet
    • Y10T442/3886—Olefin polymer or copolymer sheet or film [e.g., polypropylene, polyethylene, ethylene-butylene copolymer, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3854—Woven fabric with a preformed polymeric film or sheet
    • Y10T442/3894—Amide condensation polymer sheet or film [e.g., nylon 6, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3854—Woven fabric with a preformed polymeric film or sheet
    • Y10T442/3911—Natural or synthetic rubber sheet or film
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/40—Knit fabric [i.e., knit strand or strip material]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/601—Nonwoven fabric has an elastic quality
    • Y10T442/602—Nonwoven fabric comprises an elastic strand or fiber material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/674—Nonwoven fabric with a preformed polymeric film or sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/674—Nonwoven fabric with a preformed polymeric film or sheet
    • Y10T442/675—Ester condensation polymer sheet or film [e.g., polyethylene terephthalate, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/674—Nonwoven fabric with a preformed polymeric film or sheet
    • Y10T442/678—Olefin polymer or copolymer sheet or film [e.g., polypropylene, polyethylene, ethylene-butylene copolymer, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/674—Nonwoven fabric with a preformed polymeric film or sheet
    • Y10T442/679—Natural or synthetic rubber sheet or film
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/681—Spun-bonded nonwoven fabric

Definitions

  • the invention relates to a material web with a carrier, the on at least one side a plastic layer that is flat on the outside has to pass through the through channels.
  • the Material web is particularly suitable for the production of paper machine tapes for forming, pressing and drying areas, of filter media and here in particular of belt filter media.
  • a material web of the type mentioned above for use in a paper machine is described in EP-B-0 196 045.
  • she has as a carrier a liquid-permeable fabric on which a 1.3 to 5 mm thick layer of an elastomeric polymer resin is applied.
  • the plastic layer has through channels on that of the otherwise smooth and flat outside go through to the support and in the paper machine as drainage channels serve.
  • the through channels are manufactured in such a way that textile fibers are homogeneously dispersed in the polymer resin, before the mixture of textile fibers and polymer resin on the carrier is applied.
  • a nonwoven can be used first applied to the carrier and then the coating with be made of the polymer resin.
  • the textile fibers are removed after application of the Polymer resin by applying the solvent so that channels arise that the shape and the course of the detached Correspond to textile fibers.
  • Textile fibers proposed particle-like particles that are homogeneous be distributed in the polymer resin. As a material for these particles become inorganic salts or their hydrates or oxides suggested. Using appropriate solvents, you can in the same way as the textile fibers made of the polymer resin are removed and leave pore cavities.
  • paper machine belts are used This type has a number of advantages over known felts attributed according to the batt-on-base principle, namely enlarged Resistance to permanent deformation and therefore longer Operating times and consequently lower set-up costs, improved abrasion resistance and higher structural strength, lower Affinity for contaminating substances as well as more uniform Pressure distribution and thus improved drainage.
  • WO86 / 05219 describes a method for producing a Paper machine belt disclosed in which a polymer material applied in liquid form to a barbed tape becomes. After the polymer material has hardened, the resultant is obtained Stripped polymer tape, the spines of the Leave the barbed tape tapered through holes.
  • the Polymer material can also have a reinforcing structure be provided in the form of fibers, threads or fabrics. The disadvantage, however, is that the surface of the so obtained Polymer web is smooth and therefore has a tendency to stick to the paper web.
  • a conceptually different path is in accordance with the proposal EP-B-0 187 967.
  • a porous plastic layer on a carrier produces loose particles of a synthetic polymer resin in of the order of 0.15 to 5 mm on the surface of a Carrier fabric distributed and then subjected to heat treatment be in which the polymer resin particles above the softening point be heated so that they are at their contact points fuse with each other and with the base fabric.
  • the application can also a resinous binder may be provided.
  • loose fibers on the carrier fabric can also be added to the particles be distributed. After the particles or fibers have adhered free spaces remain among one another and on the carrier fabric, that make the plastic layer permeable to liquids.
  • the material web initially consists exclusively of polymer particles is produced by exposure to heat at their contact points be connected to each other. If necessary can complete a reinforcement structure like a reinforcement be stored in the band thus formed. Here it can be a pure fiber product or a fabric.
  • the particles can also have different diameters have one increasing from one side to the other To create permeability.
  • a polymer coating is made using a peel film under the simultaneous exposure to heat and Pressure applied to a support, the polymer film due to the heat on the peel-off film Drops forming free spaces with the Consequence that the plastic layer applied to the carrier is porous. It is also difficult with this method Permeability of the plastic layer can be set reproducibly and adapt to the respective requirements. Also stand Foils in the width required here are not available and would also not be able to be produced with sufficient uniformity.
  • the invention has for its object a web of material type mentioned so that they are simple and is time-saving to manufacture and also has a favorable surface finish Has. Another task is a simple one and flexible method for producing such a material web to provide.
  • the first-mentioned object is achieved according to the invention by that the outside of the plastic layer increases its roughness Impressions also between the openings of the through-channels having.
  • the increase caused by the imprint Roughness is particularly when using the material web as Paper machine belt is advantageous because the inclination of the paper web, sticking to the paper machine belt too much, is counteracted and yet no markings are caused become.
  • the paper web comes off much more easily from the paper machine belt than in the previously known designs same type as that from EP-B-0 196 045 and EP-B-0 273 613 are known.
  • the impressions have through their distribution in relation to the openings of the through channels such a small size that enough contact area to Paper web remains to provide even support and pressure transfer to enable.
  • the through channels together with the imprints responsible for the fact that the Remoistening of the paper web after leaving the press nip is very low.
  • the carrier of the material web according to the invention has the task to give the material web shape and structural strength and if necessary Absorb longitudinal and transverse forces. It should also be permeable to liquids his. Threads are particularly suitable for this formed textile supports, such as laid scrims, knitted fabrics, Knitted fabrics, fabrics or combinations of such textile supports. Depending on the area of application and strength requirements the carrier can be constructed in one or more layers. In the case All types of fabric come into question for a carrier fabric, in particular those known from the field of paper machine tapes are. For the threads are both monofilaments as well Multifilaments made of preferably thermoplastic plastic materials applicable.
  • the carrier can alternatively or in combination a spunbonded nonwoven and / or a punched or extruded one Have network structure. He can also with a Be nonwoven so that it has a felt character.
  • Plastics such as these are suitable as materials for the carrier especially known from the field of paper machine tapes and are mentioned in the documents mentioned above.
  • the selection The plastic can be used for the respective purpose and prevailing conditions there are adapted.
  • such plastics should be selected that are used in the production the plastic layer and the associated heat effects do not suffer any impairments.
  • the through channels are made up of a plurality of interconnected assemble standing pore cavities.
  • Such pore cavities can be with the method known from EP-B-0 196 045 with the help of soluble particles.
  • the pore cavities can be distributed so that for the respective application best possible properties can be achieved.
  • Cavity volume towards the carrier in layers or continuously increases for example by increasing the number of pore cavities and / or the individual volumes of the pore cavities.
  • Pore cavities have connection to each other so especially in the case of use in a wet press Paper machine also open pores and thus drainage volume is provided in the plane of the plastic layer and not just in the direction across this plane.
  • the middle one The diameter of the pore cavities should be in the range between 30 up to 500 ⁇ m.
  • the plastic layer contains soluble components which by means of a solvent can be removed, against which the material web is otherwise stable, and which are so distributed that additional through-channels result after removal.
  • soluble components which by means of a solvent can be removed, against which the material web is otherwise stable, and which are so distributed that additional through-channels result after removal.
  • Polyamides such as polyamide, are suitable for the plastic layer 4.6, 6, 6.6, 6.10, 6.12, 11 and 12, polyester, polyphenylene sulfite, Polyetheretherketone, polyurethane, polysulfones, thermoplastic, aromatic polyamides, polyphthalamides and polypropylene.
  • other polymers and elastomeric plastics also come in question, such as that of EP-B-0 196 045 and EP-B-0 273 613.
  • Mixtures can also be used of various plastics can be used, for example with different elastic properties, the plastic layer can also consist of layers made of plastics with different elastic assets. The selection of plastics and their elasticity can also be taken into account Properties to be adapted to the respective application.
  • the carrier is not only has a plastic layer on one side, but is provided on both sides with a plastic layer.
  • a Such training is particularly useful if the Back of the material web exposed to strong mechanical loads against which the carrier is to be protected. This can, for example, in the forming and press area of a paper machine be the case because the paper machine belts over there fixed devices such as suction boxes, strips or the like be performed.
  • the second plastic layer should also be used Have through channels, the training, arrangement and production of the through channels in an analogous manner as can be taken at the first plastic layer that second plastic layer so all the features described above may have the first plastic layer.
  • the number and / or the volumes of the pore cavities in the plastic layers at least in the areas adjacent to the carrier is the same, preferably in the second plastic layer larger than in the first plastic layer.
  • the number of Pore cavities and / or the individual volumes of the pore cavities remove in the second plastic layer facing away from the carrier, for example, to rewet the paper web to avoid the separation of paper web and paper machine belt.
  • the soluble particles be at a temperature the plastic layer can be pressed into this the plastic layer compared to the condition at room temperature is softened so the soluble particles without great pressure sink easily into the plastic layer and the embossing after the particles have been removed their shape essentially keep. It is appropriate that the soluble particles following the creation of the plastic layer applied and pressed in at an even higher temperature are, i.e. the heating of the plastic material during Application for the purpose of producing the plastic layer on the carrier is used and thus there is no need for renewed heating can.
  • the above procedure for the formation of the impressions is particularly suitable for such material webs can be produced in that the plastic layer with soluble Components are provided, which with the formation of Through channels can be removed by such a solvent against which the material web is otherwise resistant, and that at least a part of those present in the plastic layer soluble components and those pressed in on the outside soluble particles - preferably removed in one operation become.
  • the solvent has access to the soluble particles to the soluble ones initially enclosed in the plastic layer Components and can therefore also completely dissolve them and remove.
  • the impressions then form the openings of the through-channels.
  • the procedure thus replaces the Grinding treatment according to EP-B-0 273 613, independently whether as soluble components fibers or particles are embedded in the plastic layer.
  • EP-B-0 196 045 and EP-B-0 273 613 can be used for the production of the plastic layer EP-B-0 196 045 and EP-B-0 273 613 be applied.
  • Proven method first using a plastic powder - e.g. B. by grinding, sieving, etc. - is formed and the plastic powder and as soluble components, particle-like soluble ones Particles are applied to the carrier and that by Heat and pressure treatment from the plastic powder on the outside flat plastic layer with soluble therein Particle is generated.
  • the process is simple Handling and flexibility.
  • the grain size of the particles of the plastic powder and also the the soluble particles and their mixing ratio can be in wide limits can be set so that a desired Structure of the plastic layer results, especially what the cavities resulting from the dissolving of the soluble particles of the through channels.
  • the average grain size of the plastic powder may be less than that of the soluble particles, for example only half to amount to one third of the soluble particles and not at all be more than 100 ⁇ m. In this way the soluble particles of a plurality or even a plurality of particles of the Plastic powder practically encased, and it creates a relative tight packing.
  • the mixing of the plastic powder and the soluble particles can be applied to the carrier, but also during it respectively.
  • the subsequent heat treatment is said to a temperature at which the plastic powder so far is plasticized that a homogeneous, d. H. to on the soluble particles essentially non-porous plastic layer arises, which adheres to the carrier.
  • the exertion of pressure should not only favor this process, but at the same time also ensure a flat surface, the roughness afterwards by the additional to be pressed into the outer surface soluble particles is determined.
  • the warming can by infrared radiation or in a heating oven etc., while applying pressure with the help of rollers, for example can be carried out in a calender.
  • the plastic powder and the soluble particles can also applied in layers, with different layers Grain sizes, materials and mixing ratios can be provided to account for the respective requirements to wear. So the soluble particles can go to the carrier grow from layer to layer. Alternatively or in combination the number of soluble particles can also Increase carrier from layer to layer. Both measures serve to increase the permeability to the wearer leave like this especially when using the web of material desirable in the forming and press area of a paper machine is.
  • the mixing ratio can also be varied within a wide range adapt the respective purpose. So after detaching of the soluble particles to a sufficient extent through channels should arise, the volume ratio between plastic powder and soluble particles are in the range 1/4: 3/4 and 1/2: 1/2, preferably in the range 2/3: 1/3.
  • both should be made of the same material, so that the removal can be carried out in one operation using the same solvent.
  • the soluble components contained in the plastic layer such substances should be selected that remain essentially dimensionally stable under the influence of heat when the plastic layer is being produced.
  • polymeric fibers or particles come into question which have a higher heat resistance than that of the plastic matrix in which the soluble components are embedded. These conditions should expediently also apply to the soluble particles pressed into the outside of the plastic layer.
  • inorganic substances and in particular water-soluble salts such as NaCl, KCl and / or CaCO 3, as well as chlorides, carbonates and / or soluble sulfates of the alkali or alkaline earth elements or of the metals, and also salts such as these, are particularly favorable for use result from DE-C-34 19 708.
  • Such soluble particles or particles are not adversely affected by the heat treatment necessary for the formation of the plastic layer and are easy to pour and thus scatterable.
  • Inorganic substances such as carbohydrates (sugar) or salts of organic acids such as citric acid, ascorbic acid etc. are also suitable.
  • soluble components used in the form of particles the mean Diameter is between 30 to 500 microns.
  • soluble particles For impressing in the outside of the plastic layer should have soluble particles are used, whose average diameter is between 5 and 100 ⁇ m.
  • the plastic powder should have antioxidants like them known for example from US-A-3 677 965 or US-A-3 584 047 are to be added.
  • soluble Components from at least two substances are used, each one of the substances by a solvent is removable, against which the other substance (s) is or are stable.
  • a plastic layer is produced. This can be done in an analogous manner to the first plastic layer happen, so forming a mixture of one Plastic powder with soluble particles and subsequent heat and pressure treatment. Again, this should be in the outside and then plastic particles are pushed into the plastic layer be removed again to the roughness on the respective Adapt the intended use and in particular openings for the Connection to the soluble ones embedded in the plastic layer To create components so that they are also detached can be.
  • the invention is greatly enlarged on the basis of a illustrated embodiment illustrated in more detail. It shows a section of a section of a material web 1.
  • the material web 1 has a carrier 2, which as a fabric is formed with longitudinal thread 3 and transverse thread 4.
  • On the upper and the underside of the carrier 2 is each a plastic layer 5, 6.
  • the first plastic layer 5 is in accordance with the invention Process prepared by using a mixture from a plastic powder and soluble particles on the carrier 2 sprinkled and both together a heat and pressure treatment has undergone. This is a homogeneous Plastic layer 5 with substantially evenly distributed therein soluble particles have been generated, due to the pressure treatment has resulted in a flat outer surface. On the still heated and therefore plastically easily deformable outside 7 of the plastic layer 5 are then further soluble particles sprinkled and then by means of pressure rollers or the like has been pressed into the plastic layer 5. In corresponding The procedure is with the lower plastic layer 6 , especially with regard to the treatment of their Outside 8.
  • the material web 1 is a treatment with a solvent subjected to the soluble particles and particles been.
  • these impressions 9 have at least sometimes not only with each other, but also connection to the soluble particles close to the outer sides 7, 8 the plastic layers 5, 6 created so that the solvent these particles are also reached and dissolved.
  • the resolution has the consequence that 5, 6 pore cavities in the plastic layers - exemplified with 10 - arise, which have the shape of the particle detached and communicate with each other.
  • the pore cavities 10 of the top plastic layer 5 are towards the carrier 2 larger than in the area of the outside 7. This can be prepared by first mixing Plastic powder and relatively large soluble particles and after another mixture of plastic powder and in contrast smaller soluble particles is applied. With the underside Plastic layer 6 is a plastic powder with even larger soluble particles have been used so that the Pore cavities 10 are larger than that of the plastic layer on the top 3rd

Landscapes

  • Laminated Bodies (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Paper (AREA)
  • Nonwoven Fabrics (AREA)
  • Decoration Of Textiles (AREA)
  • Glass Compositions (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Inorganic Insulating Materials (AREA)
  • Cell Separators (AREA)
EP96101069A 1996-01-25 1996-01-25 Materialbahn sowie Verfahren zu deren Herstellung Expired - Lifetime EP0786550B1 (de)

Priority Applications (24)

Application Number Priority Date Filing Date Title
DE59604227T DE59604227D1 (de) 1996-01-25 1996-01-25 Materialbahn sowie Verfahren zu deren Herstellung
DK96101069T DK0786550T3 (da) 1996-01-25 1996-01-25 Materialebane og fremgangsmåde til fremstilling deraf
PT96101069T PT786550E (pt) 1996-01-25 1996-01-25 Banda de material assim como sua preparacao
AT96101069T ATE189016T1 (de) 1996-01-25 1996-01-25 Materialbahn sowie verfahren zu deren herstellung
EP96101069A EP0786550B1 (de) 1996-01-25 1996-01-25 Materialbahn sowie Verfahren zu deren Herstellung
ES96101069T ES2144162T3 (es) 1996-01-25 1996-01-25 Banda de material y procedimiento para su fabricacion.
AU14445/97A AU696610B2 (en) 1996-01-25 1997-01-17 Strip material and process for its manufacture
CA002213841A CA2213841C (en) 1996-01-25 1997-01-17 Strip material and process for its manufacture
CZ19972996A CZ293405B6 (cs) 1996-01-25 1997-01-17 Pás materiálu a způsob jeho výroby
PL97322383A PL182272B1 (pl) 1996-01-25 1997-01-17 Wstega materialu i sposób wytwarzania wstegi materialu PL PL PL
TR97/01032T TR199701032T1 (xx) 1996-01-25 1997-01-17 �erit malzeme ve bunun �retilme y�ntemi.
BR9704636A BR9704636A (pt) 1996-01-25 1997-01-17 Faixa de material bem como processos para produção da mesma
PCT/EP1997/000215 WO1997027362A1 (de) 1996-01-25 1997-01-17 Materialbahn sowie verfahren zu deren herstellung
SK1300-97A SK279612B6 (sk) 1996-01-25 1997-01-17 Pás látky a spôsob jeho výroby
US08/913,878 US6057255A (en) 1996-01-25 1997-01-17 Flat structure permeable to liquid, and a method for manufacturing such a structure
EP97901065A EP0817886B1 (de) 1996-01-25 1997-01-17 Materialbahn sowie verfahren zu deren herstellung
KR1019970706656A KR100286511B1 (ko) 1996-01-25 1997-01-17 스트립물질 및 이의 제조방법
SI9730030T SI0817886T1 (en) 1996-01-25 1997-01-17 Web of fabric and process for its production
TW086100629A TW339384B (en) 1996-01-25 1997-01-21 Strip material and process for its manufacture
MYPI97000233A MY119214A (en) 1996-01-25 1997-01-22 Material web and production method for the same
ZA9700598A ZA97598B (en) 1996-01-25 1997-01-24 Strip material and process for its manufacture.
MX9707245A MX9707245A (es) 1996-01-25 1997-09-23 Banda de material y procedimiento para su fabricacion.
NO19974421A NO311229B1 (no) 1996-01-25 1997-09-24 Materialbane og fremgangsmåte for dens fremstilling
GR20000400505T GR3032802T3 (en) 1996-01-25 2000-02-29 Web of fabric and process for its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96101069A EP0786550B1 (de) 1996-01-25 1996-01-25 Materialbahn sowie Verfahren zu deren Herstellung

Publications (2)

Publication Number Publication Date
EP0786550A1 EP0786550A1 (de) 1997-07-30
EP0786550B1 true EP0786550B1 (de) 2000-01-19

Family

ID=8222437

Family Applications (2)

Application Number Title Priority Date Filing Date
EP96101069A Expired - Lifetime EP0786550B1 (de) 1996-01-25 1996-01-25 Materialbahn sowie Verfahren zu deren Herstellung
EP97901065A Expired - Lifetime EP0817886B1 (de) 1996-01-25 1997-01-17 Materialbahn sowie verfahren zu deren herstellung

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP97901065A Expired - Lifetime EP0817886B1 (de) 1996-01-25 1997-01-17 Materialbahn sowie verfahren zu deren herstellung

Country Status (23)

Country Link
US (1) US6057255A (ko)
EP (2) EP0786550B1 (ko)
KR (1) KR100286511B1 (ko)
AT (1) ATE189016T1 (ko)
AU (1) AU696610B2 (ko)
BR (1) BR9704636A (ko)
CA (1) CA2213841C (ko)
CZ (1) CZ293405B6 (ko)
DE (1) DE59604227D1 (ko)
DK (1) DK0786550T3 (ko)
ES (1) ES2144162T3 (ko)
GR (1) GR3032802T3 (ko)
MX (1) MX9707245A (ko)
MY (1) MY119214A (ko)
NO (1) NO311229B1 (ko)
PL (1) PL182272B1 (ko)
PT (1) PT786550E (ko)
SI (1) SI0817886T1 (ko)
SK (1) SK279612B6 (ko)
TR (1) TR199701032T1 (ko)
TW (1) TW339384B (ko)
WO (1) WO1997027362A1 (ko)
ZA (1) ZA97598B (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008016863U1 (de) 2008-01-31 2009-04-02 Voith Patent Gmbh Bespannung mit herauslösbarem Anteil

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060084336A1 (en) * 1999-08-10 2006-04-20 Warwick Mills, Inc. High strength lightweight composite fabric with low gas permeability
CN1175141C (zh) * 1999-09-21 2004-11-10 阿斯坦私人有限公司 造纸机的干燥网
PT1162307E (pt) 2000-06-06 2004-03-31 Heimbach Gmbh Thomas Josef Banda de aperto de sapatas para maquinas de papel
DE10241010A1 (de) * 2002-09-05 2004-03-25 Voith Paper Patent Gmbh Transferband
US20070111625A1 (en) * 2002-10-24 2007-05-17 Voith Fabrics Patent Gmbh Condensation dryer fabric
ES2352500T3 (es) 2003-08-13 2011-02-21 HEIMBACH GMBH & CO. Revestimiento de máquina de fabricación de papel.
DE102008001854A1 (de) * 2008-05-19 2009-11-26 Voith Patent Gmbh Pressfilz
EP3030713B1 (de) 2013-08-09 2019-04-17 Voith Patent GmbH Bespannung
WO2015090797A1 (de) * 2013-12-20 2015-06-25 Voith Patent Gmbh Bespannung und verfahren zu deren herstellung
KR102317465B1 (ko) 2014-11-19 2021-10-27 유한킴벌리 주식회사 일회용 흡수물품
CN113183281A (zh) * 2021-04-23 2021-07-30 湖南三一快而居住宅工业有限公司 加气混凝土预制构件及其生产方法
PL443816A1 (pl) * 2023-02-16 2024-08-19 Burchardt Włodzimierz Pph Gobest Zespół do formowania masy półpłynnej na taśmie folii nośnej

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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
FI75893C (fi) * 1985-03-01 1988-08-08 Nokia Oy Ab Skivformad vaetskegenomslaeppande struktur, och foerfarande foer tillverkning av densamma.
US4847116A (en) * 1988-05-09 1989-07-11 Albany International Corp. Method for depositing particles and a binder system on a base fabric
ATE163453T1 (de) * 1993-11-16 1998-03-15 Scapa Group Plc Papiermaschinenbespannung
GB9401902D0 (en) * 1994-02-01 1994-03-30 Scape Group Plc Industrial fabric

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008016863U1 (de) 2008-01-31 2009-04-02 Voith Patent Gmbh Bespannung mit herauslösbarem Anteil
DE102008000196A1 (de) 2008-01-31 2009-08-06 Voith Patent Gmbh Bespannung mit herauslösbarem Anteil

Also Published As

Publication number Publication date
PL322383A1 (en) 1998-01-19
SK279612B6 (sk) 1999-01-11
CA2213841A1 (en) 1997-07-31
NO974421D0 (no) 1997-09-24
ATE189016T1 (de) 2000-02-15
BR9704636A (pt) 1998-06-09
SK130097A3 (en) 1998-06-03
TR199701032T1 (xx) 1997-12-21
AU1444597A (en) 1997-08-20
TW339384B (en) 1998-09-01
NO311229B1 (no) 2001-10-29
NO974421L (no) 1997-09-24
DK0786550T3 (da) 2000-06-26
EP0817886A1 (de) 1998-01-14
US6057255A (en) 2000-05-02
CZ299697A3 (en) 1997-12-17
KR19980703252A (ko) 1998-10-15
MY119214A (en) 2005-04-30
GR3032802T3 (en) 2000-06-30
ZA97598B (en) 1997-08-08
SI0817886T1 (en) 2000-06-30
CZ293405B6 (cs) 2004-04-14
WO1997027362A1 (de) 1997-07-31
EP0786550A1 (de) 1997-07-30
PT786550E (pt) 2000-05-31
CA2213841C (en) 2002-10-01
KR100286511B1 (ko) 2001-04-16
PL182272B1 (pl) 2001-12-31
ES2144162T3 (es) 2000-06-01
DE59604227D1 (de) 2000-02-24
MX9707245A (es) 1998-08-30
AU696610B2 (en) 1998-09-17
EP0817886B1 (de) 2000-01-19

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