EP1046737B1 - Verfahren zur Herstellung von Faservliesen nach dem Airlaidverfahren - Google Patents
Verfahren zur Herstellung von Faservliesen nach dem Airlaidverfahren Download PDFInfo
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- EP1046737B1 EP1046737B1 EP00107105A EP00107105A EP1046737B1 EP 1046737 B1 EP1046737 B1 EP 1046737B1 EP 00107105 A EP00107105 A EP 00107105A EP 00107105 A EP00107105 A EP 00107105A EP 1046737 B1 EP1046737 B1 EP 1046737B1
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Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
- D04H1/587—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives characterised by the bonding agents used
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/425—Cellulose series
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
- D04H1/60—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in dry state, e.g. thermo-activatable agents in solid or molten state, and heat being applied subsequently
Definitions
- the invention relates to a method for producing nonwoven fabrics after the airlaid process, with fibers and powder Binding agents are placed in the air flow, and with it available nonwovens and their use.
- WO-A 96/39553 describes the prior art for production air-laid nonwovens using the airlaid process, which are used for example in hygiene products, Find household items or in filter media.
- This will be natural Fibers, for example cellulose fibers (fluff pulp), inflated to a wire band with air, the air drawn off and the flat fiber structure thus obtained with an aqueous binder or thermoplastic fibers, under the influence of heat, Pressure and / or water jets, solidified.
- the WO-A 96/39553 itself relates to the manufacture of nonwovens the airlaid process, with an aqueous polymer dispersion for fiber binding is used and the penetration depth of the latex binder into the laid out fiber structure by the spray pressure or the vacuum applied is controlled.
- a disadvantage of the airlaids which are only bound with aqueous binders is the lack of binding of the nonwoven at high basis weights, so that delamination of the nonwoven layers inside can occur.
- the reason for this is that in the case of thick nonwovens, the polymer portion of the binder dispersion does not go through and only water penetrates into the interior of the fiber structure.
- Heavy airlaids with basis weights of> 60 g / m 2 are accordingly made up by an additional costly production step, for example by lamination with hot melt adhesives.
- thermoplastic binding fibers predominantly based on polyolefin, prepared by dust generation (Linting) in production or packaging Difficulties as these materials are insufficient Show dust binding of very short natural fibers.
- adhesion of these binding fibers to the polar fluff pulp fibers not sufficient due to their non-polar character, so that increased amounts of binder are necessary.
- Simultaneous is the absorption capacity of aqueous liquids significantly reduced by the hydrophobic proportion of binding fibers, what a use as an absorption medium in hygiene articles, stands in the way of its main application areas for voluminous airlaids.
- WO-A 90/11171 describes the production of fiber structures according to the airlaid process, natural fibers, preferably Wood fibers, sprayed with binder latex and dried, so that this completely with a thermoplastic binder layer are impregnated.
- the consolidation of the fiber composite takes place in a second step using heat and pressure.
- Disadvantageous with the complete impregnation is the change the physical properties of the completely covered natural fiber surface. For example, this can be the absorption capacity deteriorate the fiber composite for aqueous liquids, so that such a process does not produce Airlaids with absorbency is suitable.
- processing conditions are not recommended in this document in which the dispersed binder particles dry because is believed that dry binders are none or show little adhesion to the fiber.
- the invention had for its object to provide a process for the production of nonwoven fabrics by the airlaid method - with which thick and voluminous airlaid nonwovens with a weight per unit area of> 60 g / m 2 can also be accessed with optimum binding, without the need for more effort Lamination steps and without the absorption capacity of the fiber being restricted.
- Fiber materials are suitable as fiber materials Fiber materials.
- Polyester polyamide, glass, cellulose, cotton, wool and wood fibers.
- Natural fibers such as are particularly preferred Cellulose, cotton, wool and wood fibers, in particular Cellulose fibers such as cellulose fibers.
- Suitable thermoplastic polymer powders are polymers of one or more monomers from the group of vinyl esters of unbranched or branched carboxylic acids with 1 to 12 C atoms and the ester of acrylic acid and methacrylic acid with unbranched or branched alcohols with 1 to 12 carbon atoms. Short-chain vinyl esters with 1 to 4 carbon atoms are preferred in the carboxylic acid residue such as vinyl acetate, vinyl propionate, vinyl butyrate, 1-methyl vinyl acetate.
- Methacrylic acid ester or acrylic acid ester with 1 to 4 carbon atoms in the ester residue such as methyl acrylate, methyl methacrylate, ethyl acrylate, Ethyl methacrylate, propyl acrylate, propyl methacrylate, n-butyl acrylate, n-butyl methacrylate.
- 0.05 to 10.0% by weight can also be obtained on the total weight of the monomers, polar auxiliary monomers the group comprising ethylenically unsaturated mono- and dicarboxylic acids and their amides, such as acrylic acid, methacrylic acid, Maleic acid, fumaric acid, itaconic acid, acrylamide, methacrylamide; ethylenically unsaturated sulfonic acids or their salts, preferably vinyl sulfonic acid, 2-acrylamidopropane sulfonate and N-vinyl pyrrolidone can be copolymerized.
- polar auxiliary monomers the group comprising ethylenically unsaturated mono- and dicarboxylic acids and their amides, such as acrylic acid, methacrylic acid, Maleic acid, fumaric acid, itaconic acid, acrylamide, methacrylamide; ethylenically unsaturated sulfonic acids or their salts, preferably vinyl sul
- Hydrophilic polymers are preferred, the hydrophilicity the polymers by partial saponification of the vinyl esters or (Meth) acrylic acid ester units and optionally by a polar auxiliary monomer content is obtained in the polymer. Hydrophilic polymers are therefore those which which are at least 50% by weight of the short-chain mentioned above Contain vinyl ester or (meth) acrylic ester units or at least 5% by weight of the said polar auxiliary monomers, each based on the total weight of the monomers. For core-shell polymers the values in% by weight apply to the shell polymer.
- hydrophobic copolymers which, in addition to the vinyl ester or (meth) acrylate comonomers, also contain one or more hydrophobic comonomers from the group comprising long-chain vinyl esters having 5 to 11 carbon atoms in the ester radical, for example vinyl -2-ethylhexanoate, vinyl laurate, vinyl pivalate and vinyl ester of alpha-branched monocarboxylic acids with 9 to 11 carbon atoms, for example VeoVa9 R or Veo-Va10 R (trade name of Shell); Vinyl aromatics, for example styrene, methylstyrene and vinyltoluene; Vinyl halides, for example vinyl chloride; Olefins, e.g.
- the proportion of hydrophobic comonomers is at least 20% by weight, preferably 20 to 70% by weight, in each case based on the total weight of the copolymer.
- the powdered binders are thermosetting, that means they cross-link at higher Temperature.
- Crosslinkable comonomers are therefore also suitable, preferably in amounts of 0.05 to 10% by weight on the total weight of the monomers, such as acrylamidoglycolic acid (AGA), methacrylamidoglycolic acid methyl ester (MAGME), N-methylolacrylamide (NMA), N-methylol methacrylamide (NMMA), N-methyl olallyl carbamate, Alkyl ether of N-methylolacrylamide or N-methylolmethacrylamide such as their isobutoxy ether or n-butoxy ether.
- AGA acrylamidoglycolic acid
- MAGME methacrylamidoglycolic acid methyl ester
- NMA N-methylolacrylamide
- NMMA N-methylol methacrylamide
- Alkyl ether of N-methylolacrylamide or N-methylolmethacrylamide such as their isobutoxy ether or
- crosslinkable comonomers are alkoxysilane functional ones Monomers such as acryloxypropyl tri (alkoxy) and Methacryloxypropyl tri (alkoxy) silanes, vinyl trialkoxysilanes and vinyl methyl dialkoxysilanes, preferably vinyl triethoxysilane and gamma-methacryloxypropyltriethoxysilane.
- Preferred crosslinkable comonomers are N-methylolacrylamide (NMA), N-methylolmethacrylamide (NMMA), N-methylolallyl carbamate, alkyl ether of N-methylolacrylamide or N-methylolmethacrylamide such as their isobutoxy ether or n-butoxy ether.
- the polymer composition is chosen so that the powdered binders can be heat activated, that is, softened at elevated temperature. Therefore, the polymer composition is chosen so that a glass transition temperature Tg of -40 ° C to + 150 ° C, preferably from -20 ° C to + 50 ° C results.
- Tg n the glass transition temperature in degrees Kelvin of the homopolymer of monomer n. Tg values for homopolymers are listed in Polymer Handbook 3rd Edition, J. Wiley & Sons, New York (1989).
- the polymers are prepared in a known manner by bulk, solution, suspension or emulsion polymerization and optionally subsequent drying.
- the Drying can be carried out using known methods: Suspension polymers by suction and drying; both Solution polymers by precipitation of the polymers or distillation the solvent and subsequent drying; in the case of emulsion polymers by spray drying, or by means of coagulation of the dispersion and subsequent fluid bed drying of the coagulum.
- the polymerization is carried out in conventional reactors or pressure reactors performed in a temperature range from 30 ° C to 80 ° C and initiated with the commonly used methods.
- the initiation takes place by means of the usual water-insoluble or water-soluble radical generator that preferably in amounts of 0.01 to 3.0% by weight, based on the Total weight of the monomers can be used.
- examples for water-insoluble initiators are dicetyl peroxydicarbonate, Dicyclohexyl peroxydicarbonate, dibenzoyl peroxide; examples for water-soluble initiators are sodium persulfate, hydrogen peroxide, t-butyl peroxide, t-butyl hydroperoxide; Potassium peroxodiphosphate, Azobisisobutyronitrile.
- the radical initiators mentioned in a known manner with 0.01 to 0.5% by weight, based on the total weight of the monomers, Reducing agents can be combined.
- Reducing agents can be combined.
- At the redox initiation is preferably one or both Redox catalyst components metered during the polymerization.
- the polymerization takes place in the presence of the commonly used protective colloids such as Polyvinyl alcohol, cellulose derivatives such as hydroxyethyl cellulose, Polyvinyl pyrrolidone; during the emulsion polymerization the polymerization in the presence of those commonly used Emulsifiers are anionic, cationic and nonionic Emulsifiers.
- the amount of protective colloids and Emulsifiers are usually from 0.5 to 6% by weight on the total weight of the monomers.
- the polymerization can discontinuous or continuous, with or without use of seed latices, with presentation of all or individual components of the reaction mixture, or with partial submission and replenishment of the or individual components of the reaction mixture, or according to the dosing process without a template be performed.
- the solids content of the dispersion thus obtainable is 20 to 70%.
- the polymer dispersions are preferably dried by means of spray drying or by means of coagulation of the dispersion and subsequent fluidized bed drying of the coagulum.
- Drying is preferred in conventional spray drying systems, where the atomization by means of one-, two- or multi-component nozzles or with a rotating disc can.
- the outlet temperature is generally in Range from 55 ° C to 100 ° C, preferably 65 ° C to 90 ° C, depending on Plant, Tg of the resin and desired degree of dryness selected.
- the dispersion of the polymer is used for spray drying a fixed content of preferably 20% to 70% together with Protective colloids sprayed and dried as an atomization aid become.
- partially saponified can be used as protective colloids
- Polyvinyl alcohols, polyvinyl pyrrolidones, starches, Melamine formaldehyde sulfonates, naphthalene formaldehyde sulfonates be used.
- a particular advantage of suspension polymerization powder produced or dried by spray drying is because of the proportion of protective colloid water-activatable binding powder can be obtained; that is the The melt viscosity of the polymer powder can be increased by adding Reduce water.
- water-activatable powders are used for fiber binding.
- Not Powders that can be activated with water are better sealable binders and are used when the fiber composite is subsequently by heat sealing with another substrate to be connected.
- the polymer powders have a melt flow index MFI (Melt Flow Index) from 2 to 300, preferably 15 to 80 g / 10 min at 190 ° C and a load weight of 2.16 kg.
- MFI Melt Flow Index
- To determine the MFI value is determined according to method DIN 53735 on a Göttfert MFI device Move the MPS-D model.
- the molecular weight is 15,000 to 800,000, preferably 100,000 to 200,000.
- the molecular weight is the weight average, determined by means of the gel permeation method (GPC) against sodium polystyrene sulfonate standards, specified.
- the preferred grain size is 50 to 400 ⁇ m, particularly preferably 100 to 400 ⁇ m.
- the method according to the invention can be used on conventional airlaid systems with several forming heads connected in series for blowing the fiber and / or powder mixture with air be practiced.
- the number of forming heads is determined according to the desired basis weight of the nonwoven and process variants.
- the fiber material can be laid out in the form of a prefabricated fiber fleece, or a first fiber layer made of loose fibers can be laid on by means of air laying. If a prefabricated nonwoven is laid out, the nonwoven is laid out, for example, in the form of knitted fabrics, scrims, spunbonded or polymer-bonded nonwoven.
- loose fibers short fibers with a fiber length of 20 20 mm, preferably 1 to 18 mm, in particular 2 to 12 mm, are preferably used in this and the subsequent steps.
- the weight per unit area of the nonwoven fabric or loose fibers laid out in the first step is 10 to 50 g / m 2 .
- the fibers and the thermoplastic polymer powder are separated or deposited as a fiber / powder mixture in an air stream in an amount of 10 to 300 g / m 2 , preferably 10 to 100 g / m 2 .
- the fibers and the fiber binding powder are dry-mixed in a turbulent airflow, continuously or discontinuously, and the mixture is then deposited in the airflow. This step can be repeated one or more times until the desired basis weight of the fleece is reached.
- the procedure is such that the multiple application is carried out by means of a plurality of forming heads arranged one behind the other.
- the application amount is preferably 10 to 100 g / m 2 per process step.
- the proportion by weight of fiber binding powder is in each case 1 to 30% by weight, preferably 5 to 15% by weight, in each case based on the total weight of fiber and polymer powder.
- the nonwovens or fibers should be laid out have a residual moisture content of 5 to 15% by weight since the residual moisture content swelling of the polymer powder and better adhesion of the polymer powder on the fiber.
- the designed ones Non-woven fabrics or layers of fibers, either before laying on the next layer or after storing all layers, with water or steam humidified to activate the polymer powder.
- the humidification can using steam or spraying Water, optionally combinations of the individual Procedures are used. When producing thick Steaming with hot steam is preferred for nonwovens.
- the drying and solidification of the laid fiber material is generally carried out at temperatures from 80 ° C to 260 ° C, preferably 120 ° C to 200 ° C, optionally under a pressure of up to 100 bar, the drying temperature and the pressure to be used primarily from Depending on the type of fiber material.
- fiber bodies with a very high basis weight are accessible by means of air laying.
- the weight per unit area of the fiber bodies is generally from 30 g / m 2 to 1000 g / m 2 , preferably from 60 g / m 2 to 1000 g / m 2 , in particular from 60 g / m 2 to 300 g / m 2 .
- the fiber binding powder Powdery additives are also included, for example super adsorber (SAP), fillers such as silica gel, Flame retardants, expandable microbeads or activated carbon.
- SAP super adsorber
- fillers such as silica gel, Flame retardants, expandable microbeads or activated carbon.
- the fibers and the fiber binding powder can be deposited in a mixture in an air stream to form a textile fabric and then the fiber structure can be sprayed with an aqueous polymer dispersion instead of water activation or in addition to water activation.
- the procedure here can be such that polymer powder and polymer dispersion have the same polymer base;
- it is also possible to use different polymers from the group of the above-mentioned vinyl ester or methacrylic acid ester polymers for example depositing a water-activatable powder with the fibers and spraying this fiber structure with an aqueous dispersion of a non-water-activatable but sealable polymer.
- the polymer dispersion is included a fixed content of preferably 7 to 30%.
- the amount of polymer dispersion used is preferably 2 to 25% by weight of the fiber content.
- the drying and solidification takes place analogous to the procedure described above. This process variant is preferred when very thick fiber structures be made, or if the nonwovens in a next Process step to be laminated.
- the fiber structures are given in the above Way, with or without spraying of polymer dispersion, treated and then another substrate hung up.
- the laminates are consolidated under the temperature and pressure conditions given above.
- lamination can be two identical or different fiber structures are glued together or a fiber structure with be glued to another substrate.
- plastic films such as polyester films or polyolefin films, Fabrics and nonwovens such as cellulose fleeces, fiberboard such as chipboard, foamed sheet materials like polyurethane foams.
- the products accessible by the process according to the invention are suitable for use in the automotive industry or in the construction sector, for example as insulation or for use in hygiene area, for example for the production of diapers or sanitary napkins.
- the non-woven fabrics can save costs in an integrated manufacturing process can be processed further, for example to form laminates yourself or other fleeces while maintaining multifunctional Composites.
- the polymer powders also have binding capacity for functional, powdery additives, which are often found in nonwovens are included and can be due to the tie even distribution effectively. Compared to Conventional binding fibers are obtained when using the binding powder better adhesion to natural fibers, improved dust binding without the absorption capacity of the airlaid being restricted becomes.
- An airlaid made of cellulose fibers (fiber length 2 to 12 mm) with a basis weight of 100 g / m 2 was, with 10 wt .-% (s / s), based on the total weight of fiber and polymer, an aqueous dispersion of a self-crosslinking vinyl acetate-ethylene -NMA copolymers sprayed on both sides and then dried in a drying cabinet at a temperature of 180 ° C and without pressure.
- the strength of the nonwoven was tested with a peel seam test. For this purpose, 40 mm wide strips were produced and then 5 individual strips were tested according to ISO 9073-3 and the average was determined.
- the peel seam strength of the airlaid was 0.15 N / cm.
- Cellulose fibers (fiber length 2 to 12 mm) were laid out in a basis weight of 50 g / m 2 and then a layer of cellulose fiber in a basis weight of 50 g / m 2 with an additional 20% by weight, based on the fiber / powder mixture Total weight of fiber and powder, a powdery vinyl acetate-diisopropyl fumarate copolymer with 30 wt .-% diisopropyl fumarate.
- the fleece was dried in the drying cabinet under the same conditions as in Comparative Example 1.
- the peel strength was 0.38 N / cm. Although non-crosslinkable binder was used, the peel seam strength was significantly increased in comparison with comparative example 1.
- Example 2 The procedure was analogous to Example 2, with the difference that that after laying out the fleece and before drying 30th % By weight of water, based on the total weight of fiber and Powder that were sprayed on.
- the peel seam strength increased again and was 0.41 N / cm.
- Example 2 The procedure was analogous to Example 2, with the difference that that 10 wt .-%, based on the total weight of fiber and Powder, a 70:30 mixture (w / w) of the powdered binder according to example 2 and a SAP powder (Famor SX FAM) was used. Despite the high percentage of SAP powder the peel seam strength of 0.30 N / cm is significantly higher than that of the Use of a larger amount of crosslinkable binder dispersion (Comparative Example 1). It wasn't dusting the Superadsorber powder either noticeable.
- Example 2 The procedure was analogous to Example 2, with the difference that that 10 wt .-%, based on the total weight of fiber and Powder, a powdery, hydrophobic polyolefin copolymer (PE / PP) were used.
- the peel seam strength was with 0.08 N / cm compared to the vinyl ester or (meth) acrylic ester polymers significantly reduced.
- Fig. 1 is a SEM picture of one with PE / PP bicomponent fibers thermally consolidated airlaids (100 g / m2). The poor wetting of the fluff pulp is good too detect.
- Fig. 2 shows an airlaid (100 g / m 2 ) consolidated with a powdered binder (example 3), which has very good wetting of the fibers.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Description
Claims (12)
- Verfahren zur Herstellung von Faservliesen nach dem Airlaidverfahren wobei die Fasern und das pulverförmige Bindemittel in einem Luftstrom abgelegt werden, dadurch gekennzeichnet, daßa) in einem ersten Verfahrensschritt ein Faservlies oder Fasern bis zu einem Flächengewicht von 10 bis 50 g/m2 ausgelegt werden,b) im nächsten Schritt Fasern und ein thermoplastisches Polymerpulver auf der Basis von Polymerisaten von einem oder mehreren Monomeren aus der Gruppe der Vinylester und (Meth-)Acrylsäureester getrennt oder als Mischung im Luftstrom in einer Menge von 10 bis 300 g/m2 abgelegt werden und dieser Schritt gegebenenfalls so oft wiederholt wird, bis das gewünschte Flächengewicht erhalten wird, undc) das Fasermaterial bei Temperaturen von 80°C bis 260°C und bei einem Druck von bis zu 100 bar verfestigt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß Polymerpulver auf der Basis von kurzkettigen Vinylester mit 1 bis 4 C-Atomen im Carbonsäurerest und kurzkettigen Methacrylsäureester oder Acrylsäureester mit 1 bis 4 C-Atomen im Esterrest eingesetzt werden.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß noch 0.05 bis 10.0 Gew%, bezogen auf das Gesamtgewicht der Monomeren, polarer Hilfsmonomere aus der Gruppe umfassend ethylenisch ungesättigte Mono- und Dicarbonsäuren und deren Amide, ethylenisch ungesättigte Sulfonsäuren und deren Salze, N-Vinylpyrrolidon und/oder vernetzbare Comonomere copolymerisiert sind.
- Verfahren nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß Polymerpulver auf der Basis von hydrophilen Polymerisaten eingesetzt werden, welche mindestens 50 Gew.-% der obengenannten kurzkettigen Vinylester- oder (Meth)acrylsäureester enthalten oder mindestens 5 Gew.-% der genannten polaren Hilfsmonomere, jeweils bezogen auf das Gesamtgewicht der Monomere.
- Verfahren nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß Polymerpulver eingesetzt werden, auf der Basis von Vinylester- bzw. (Meth)acrylat-Comonomeren, welche mindestens 20 Gew.-% ein oder mehrere hydrophobe Comonomere enthalten aus der Gruppe umfassend langkettige Vinylester mit 5 bis 11 C-Atomen im Esterrest, Vinylaromaten, Vinylhalogenide, Olefine, Diene, sowie Diester von Dicarbonsäuren wie Fumarsäure oder Maleinsäure enthalten.
- Verfahren nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß die Polymerisate eine Glasübergangstemperatur Tg von -40°C bis +150°C aufweisen.
- Verfahren nach Anspruch 1 bis 5, dadurch gekennzeichnet, daß die ausgelegten Faservliese oder Faserlagen entweder vor dem Auflegen der nächsten Lage oder nach Ablage aller Lagen mit 5 bis 60 Gew.-%, jeweils bezogen auf das Gesamtgewicht von Faser und Faserbindepulver, Wasser oder Dampf befeuchtet werden.
- Verfahren nach Anspruch 1 bis 7, dadurch gekennzeichnet, daß mit dem Polymerpulver auch pulverförmige Zusatzstoffe wie Superadsorber, Füllstoffe, Flammschutzmittel, blähfähige Microperlen oder Aktivkohle zugegeben werden.
- Verfahren nach Anspruch 1 bis 8, dadurch gekennzeichnet, daß Kombinationen von Polymerpulver und wäßriger Polymerdispersion eingesetzt werden.
- Verfahren nach Anspruch 1 bis 9, dadurch gekennzeichnet, daß im letzten Verfahrenschritt vor der Wärmebehandlung nur mehr ein Lage Faser ohne Zusatz von Polymerpulver oder Polymerdispersion abgelegt wird.
- Faservliese mit einem Flächengewicht von 30 g/m2 bis 500 g/m2, erhältlich mit einem Verfahren nach Anspruch 1 bis 10.
- Verwendung der Faservliese aus Anspruch 11 im Automobilbau, im Bausektor und im Hygienebereich.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19918343 | 1999-04-22 | ||
DE19918343A DE19918343C2 (de) | 1999-04-22 | 1999-04-22 | Verfahren zur Herstellung von Faservliesen nach dem Airlaidverfahren |
Publications (2)
Publication Number | Publication Date |
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EP1046737A1 EP1046737A1 (de) | 2000-10-25 |
EP1046737B1 true EP1046737B1 (de) | 2001-11-14 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP00107105A Expired - Lifetime EP1046737B1 (de) | 1999-04-22 | 2000-04-06 | Verfahren zur Herstellung von Faservliesen nach dem Airlaidverfahren |
Country Status (5)
Country | Link |
---|---|
US (1) | US6458299B1 (de) |
EP (1) | EP1046737B1 (de) |
BR (1) | BR0001651A (de) |
CA (1) | CA2306514A1 (de) |
DE (2) | DE19918343C2 (de) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10206126A1 (de) * | 2002-02-14 | 2003-09-04 | Wacker Polymer Systems Gmbh | Pulverförmige Bindemittelzusammensetzung |
AU2003266880A1 (en) * | 2002-09-13 | 2004-04-30 | Whirlpool Canada Inc. | Device and process for processing organic waste |
US20070026754A1 (en) * | 2003-04-25 | 2007-02-01 | Carmen Martin Rivera | Scouring material |
US8104247B2 (en) * | 2003-11-12 | 2012-01-31 | Margaret Henderson Hasse | Disposable roof covering |
US7208429B2 (en) * | 2004-12-02 | 2007-04-24 | The Procter + Gamble Company | Fibrous structures comprising a nonoparticle additive |
US7976679B2 (en) | 2004-12-02 | 2011-07-12 | The Procter & Gamble Company | Fibrous structures comprising a low surface energy additive |
US7459179B2 (en) * | 2004-12-02 | 2008-12-02 | The Procter & Gamble Company | Process for making a fibrous structure comprising an additive |
DE102005004454B3 (de) * | 2005-02-01 | 2006-10-12 | ERKO Trützschler GmbH | Verfahren zur Herstellung von textilen Formstücken |
US7962993B2 (en) | 2005-09-30 | 2011-06-21 | First Quality Retail Services, Llc | Surface cleaning pad having zoned absorbency and method of making same |
US7694379B2 (en) | 2005-09-30 | 2010-04-13 | First Quality Retail Services, Llc | Absorbent cleaning pad and method of making same |
DE102006013988A1 (de) * | 2006-03-22 | 2007-09-27 | Concert Gmbh | Faserverstärkter Thermoplast |
GB0818186D0 (en) * | 2008-10-06 | 2008-11-12 | 3M Innovative Properties Co | Scouring material comprising natural fibres |
DE102009055951A1 (de) | 2009-11-27 | 2011-06-01 | Glatfelter Falkenhagen Gmbh | Absorbierende Struktur |
US20110184365A1 (en) | 2010-01-28 | 2011-07-28 | Glatfelter Falkenhagen Gmbh | Flexible, highly absorbent material |
DE102010006228A1 (de) | 2010-01-28 | 2011-08-18 | Glatfelter Falkenhagen GmbH, 16928 | Flexibles, stark absorbierendes Material |
JP5934111B2 (ja) | 2010-01-28 | 2016-06-15 | グラトフェルター ファルケンハーゲン ゲゼルシャフト ミット ベシュレンクテル ハフツング | 柔軟性のある高吸収性を有する材料 |
GB201104684D0 (en) | 2011-03-18 | 2011-05-04 | Metz Paul Friedrich | Composite film and fibre of keratins and cellulose |
US9144943B2 (en) | 2012-02-15 | 2015-09-29 | Olbrich Gmbh | Fiber mold filling system and method |
US20220105701A1 (en) * | 2019-02-14 | 2022-04-07 | Zephyros, Inc. | Cushioning flooring underlayment |
DE102019004633A1 (de) * | 2019-07-05 | 2021-01-07 | Ewald Dörken Ag | Entkopplungsbahn |
WO2022122120A1 (de) * | 2020-12-08 | 2022-06-16 | Wacker Chemie Ag | Textile flächengebilde |
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US2993239A (en) * | 1954-11-08 | 1961-07-25 | Weyerhaeuser Co | Production of integral layered felts |
AU522973B2 (en) * | 1978-03-02 | 1982-07-08 | Karl Kristian Kobs Kroyer | Preparing dry-laid fibrous products |
GB8618729D0 (en) * | 1986-07-31 | 1986-09-10 | Wiggins Teape Group Ltd | Fibrous structure |
GB8717729D0 (en) * | 1987-07-27 | 1987-09-03 | Bonar Carelle Ltd | Non-woven materials |
US4869950A (en) * | 1987-09-14 | 1989-09-26 | The Dow Chemical Company | Nonwoven fibrous batt |
CA2012524A1 (en) * | 1989-03-20 | 1990-09-20 | Amar N. Neogi | Natural fiber product coated with a thermoplastic binder material |
FI84843C (fi) * | 1989-05-17 | 1992-01-27 | Ahlstroem Oy | Foerfarande foer framstaellning av fiberfoerstaerkt raomaterial foer plast. |
US5128082A (en) * | 1990-04-20 | 1992-07-07 | James River Corporation | Method of making an absorbant structure |
US5237945A (en) * | 1990-12-17 | 1993-08-24 | American Colloid Company | Water barrier formed from a clay-fiber mat |
DE4306808A1 (de) * | 1993-03-04 | 1994-09-08 | Wacker Chemie Gmbh | Vernetzbare Dispersionspulver als Bindemittel für Fasern |
FI110326B (fi) * | 1995-06-06 | 2002-12-31 | Bki Holding Corp | Menetelmä kuitukankaan valmistamiseksi |
DE19733133A1 (de) * | 1997-07-31 | 1999-02-04 | Wacker Chemie Gmbh | Pulverförmige, vernetzbare Textilbinder-Zusammensetzung |
-
1999
- 1999-04-22 DE DE19918343A patent/DE19918343C2/de not_active Expired - Fee Related
-
2000
- 2000-04-06 DE DE50000036T patent/DE50000036D1/de not_active Expired - Fee Related
- 2000-04-06 EP EP00107105A patent/EP1046737B1/de not_active Expired - Lifetime
- 2000-04-17 US US09/551,243 patent/US6458299B1/en not_active Expired - Fee Related
- 2000-04-19 BR BR0001651-9A patent/BR0001651A/pt not_active IP Right Cessation
- 2000-04-20 CA CA002306514A patent/CA2306514A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
DE19918343A1 (de) | 2000-10-26 |
DE19918343C2 (de) | 2001-03-08 |
BR0001651A (pt) | 2000-10-31 |
US6458299B1 (en) | 2002-10-01 |
DE50000036D1 (de) | 2001-12-20 |
CA2306514A1 (en) | 2000-10-22 |
EP1046737A1 (de) | 2000-10-25 |
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