EP2093318B1 - Matière première composite flexible, son procédé de fabrication et d'utilisation - Google Patents

Matière première composite flexible, son procédé de fabrication et d'utilisation Download PDF

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Publication number
EP2093318B1
EP2093318B1 EP08003298A EP08003298A EP2093318B1 EP 2093318 B1 EP2093318 B1 EP 2093318B1 EP 08003298 A EP08003298 A EP 08003298A EP 08003298 A EP08003298 A EP 08003298A EP 2093318 B1 EP2093318 B1 EP 2093318B1
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EP
European Patent Office
Prior art keywords
fibers
composite
drying
moisture content
binder
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EP08003298A
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German (de)
English (en)
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EP2093318A1 (fr
Inventor
Rainer Gardill
Frank Mehlhorn
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ISOWOOD Holding GmbH
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ISOWOOD Holding GmbH
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Priority to PL08003298T priority Critical patent/PL2093318T3/pl
Priority to EP08003298A priority patent/EP2093318B1/fr
Publication of EP2093318A1 publication Critical patent/EP2093318A1/fr
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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
    • D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/48—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
    • 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
    • D04H1/4266—Natural fibres not provided for in group D04H1/425
    • 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
    • D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/48—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
    • D04H1/488—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation in combination with bonding agents
    • 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
    • D04H1/64—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 wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/645—Impregnation followed by a solidification process

Definitions

  • the present invention relates to a process for producing flexible composite materials, the composites thus obtained and their use.
  • the method of the invention comprises mechanically agitating during drying of binder-impregnated fibrous structures, such as natural fiber felts and natural fiber webs, and / or needling following drying.
  • the composites thus obtained are particularly suitable for further processing of molded parts in compression molding.
  • Felt and nonwovens are widely used starting materials, in particular in the production of molded parts in the automotive industry.
  • the fibers could already be impregnated and dried before the production of the felt or fleece. In many cases, however, this is technically very complicated to accomplish.
  • thermally curable polymer dispersions are described as a binder.
  • the object is achieved by providing a method for producing flexible composites of sheet-like fibrous structures and binders.
  • a starting material of the process according to the invention are sheet-like fiber structures or mats and fabrics, nonwovens or nonwovens or felts.
  • textile fabrics such as woven, knitted or nonwoven fabrics are to be understood. They can be made from fibers, shavings, chips or their mixtures exist. An example of such structures are wet or air laid or carded webs.
  • the nonwovens may for example consist of natural or synthetic fibers or of mixtures of natural and synthetic fibers. Examples of natural fibers are fruit fibers, seed fibers and stem fibers such as sisal, jute, hemp, kenaf, flax, cellulose and cotton as well as banana fibers, wool, hair and cork.
  • synthetic fibers are fibers of polyester, polyacrylonitrile, polyamide, carbon, polyvinyl chloride, polyolefins such as polyethylene and polypropylene, and aramid and inorganic fibers such as mineral fibers and glass fibers.
  • starting materials of the process according to the invention comprise plant fibers and are in particular plant fiber felts or fleeces, which are preferably made of e.g. Jute, sisal, banana, coconut, flax, hemp, kenaf, cotton fibers and mixtures thereof.
  • plant fiber felts or fleeces which are preferably made of e.g. Jute, sisal, banana, coconut, flax, hemp, kenaf, cotton fibers and mixtures thereof.
  • synthetic fibers such as polyester fibers, polypropylene fibers or also fibers which are obtained synthetically from renewable raw materials, such as polylactide fibers, or also glass fibers.
  • Nonwovens consisting only of synthetic fibers or of synthetic fibers and glass fibers can also be used as starting materials.
  • the sheet-like fiber structure comprises plant fibers, which are preferably selected from jute, sisal, banana, coconut, flax, hemp, kenaf, cotton fibers and mixtures thereof, and is in particular a corresponding vegetable fiber felt or fleece ,
  • their proportion is preferably more than 50% by weight, e.g. 70 to 100 wt .-%.
  • the sheet-like fiber structure, starting material preferably has a basis weight of 100 g / m 2 to 4000 g / m 2 , in particular from 600 g / m 2 to 1900 g / m 2 .
  • the fiber structure is a mixture of 50% flax fibers and kenaf fibers.
  • the solidification of the starting material is preferably carried out by mechanical needling.
  • the web may also be consolidated by other felting processes or by thermal bonding with suitable melt fibers or remain unconsolidated as a scrim. (see 1, 3, 4)
  • Another starting material of the process according to the invention are binders.
  • binder as used herein is a binder or binder liquid comprising a polymeric structure dissolved or dispersed in an organic solvent, water or mixtures.
  • a "binder” or a “binding liquid” is also a collective term for the synonyms latex, adhesive, dispersion, plastic dispersion, polymer dispersion, emulsion polymer and polymer solution. (see also section 3.2 Binder fluids in (1)).
  • Binders are known in the art. Preferred suitable binders are described in (1).
  • the binder is preferably selected from latex, adhesive, dispersion, plastic dispersion, polymer dispersion, emulsion polymer and polymer solution.
  • the binder is present as a solution or dispersion.
  • prepolymers and solutions or dispersions of these may be suitable binders.
  • the binder is preferably selected from thermally curable binders.
  • thermally curable binders are known in the art and extensively described.
  • binders are known to those skilled in the art, such as UV-curing systems, which cure, for example, only at very high thermal stress without UV light.
  • Preferred binders are described in: WO 01/27163 A1 respectively.
  • EP 1 240 205 B1 (BASF); WO 2006/063802 (BASF).
  • a particularly preferred binder is Acrodur® - an aqueous acrylate dispersion (BASF).
  • binders are prepolymers based on furfuryl alcohol (furan resins) or phenolic resins, such as resoles and novolaks.
  • the binders may contain other additives, such as water repellents, flame retardants, color pigments, anti-mold agents, wetting agents (surfactants), defoamers.
  • additives such as water repellents, flame retardants, color pigments, anti-mold agents, wetting agents (surfactants), defoamers.
  • Preferred water repellents are paraffin dispersions, wax dispersions, organosilicon compounds.
  • Preferred flame retardants are inorganic flame retardants such as aluminum hydroxide, magnesium hydroxide, ammonium sulfate and phosphate, boron salts, also in combination with organic compounds such as melamine and urea.
  • Preferred color pigments are organic and inorganic color pigments, such as in EP 1 582 344 A1 described. Further color pigments are known to the person skilled in the art.
  • Preferred antimold agents are boron oxides, boric acid and salts, and mixtures thereof; 2-mercaptopyridine N-oxide and salts, such as the sodium salt,
  • antimold agents are basically possible and common in the art, but not necessary due to the method of the invention (see below).
  • step (a) of the process according to the invention a sheetlike fibrous structure is treated with a binder.
  • This treatment is known in the art and is also referred to as impregnation.
  • Preference is impregnated with at least one binder.
  • the process step (a) involves known measures for the production of bonded fiber webs.
  • At least one binder in an amount of 0.5 to 40 wt .-%, preferably 15 to 30 wt .-%, more preferably about 20 wt .-% (solids content of binder based on the sheet-like fiber structure) is used.
  • the binder serves to solidify the fiber structures. It can be applied, for example, by spraying, dipping, impregnating or patting or by treating the fiber structure with a foam (3, 4).
  • Preferred methods for the treatment or impregnation are selected from spraying, rolling or impregnating or impregnating in an impregnating bath.
  • the impregnation in the padder bath especially if the fiber structure contains natural fibers.
  • a needled natural fiber mat in roll form is pulled through the padder bath containing the binder (s) with a suitable solids content and optional additives and squeezed between 2 rollers to the desired binder and water content. Thereafter, the impregnated roll is optionally wound and dried via an external dryer (see step (b)).
  • the impregnated mat web is fed directly into the dryer, preferably a perforated drum dryer (see below).
  • the starting material felt is impregnated in step (a) in a known manner with a binder solution - preferably with an aqueous solution - or a binder dispersion which may contain other additives.
  • step (b) of the process according to the invention the treated sheetlike fibrous structure is dried.
  • the drying of the fiber structure treated with a binder according to process step (a) is preferably carried out under conditions which do not lead to the curing of the binder.
  • These conditions are preferably selected depending on the curing temperature of the binder, especially when thermally curable binders are used.
  • the drying of the fibrous structures treated with a binder according to process step (a) is preferably carried out at a temperature which does not exceed the curing temperature of the binder, i. which is below the temperature at which the binder crosslinks. This ensures that the binder does not or at most only partially cured.
  • the temperature at which the individual binders crosslink or harden depends on the type of binder used. Methods for determining the crosslinking temperature of binders (or also referred to as the curing temperature of the binders) are known in the art.
  • the water- or solvent-containing felt is dried to the extent that, as far as possible, only the solids content remain in the felt, i. that a water or solvent content of less than 10 wt .-% based on the impregnated felt remains.
  • the curing temperature (crosslinking temperature) of the binder is not exceeded in order to avoid premature chemical curing.
  • the curing temperature of the preferred binder Acrodur® is 130 ° C to 200 ° C or depending on the preparation used at 130 ° C to 160 ° C (see information from the manufacturer).
  • the drying in step (b) is preferably carried out using this binder in a temperature range of 100 to 130 ° C.
  • the drying is preferably carried out in a perforated drum dryer.
  • a preferred screen drum dryer has 4 to 6 drums, as described for example in (1), p 346. Manufacturers of such dryer are z. Fleissner GmbH (Egelsbach, Germany) or Moenus Textilmaschinen GmbH (Gera and Mönchengladbach, Germany).
  • Step (b) contains two (part) steps (i) and (ii), which are performed either alternatively or in combination.
  • Step (i) of step (b) During drying, the fiber structure is subjected to a mechanical movement according to the invention.
  • This mechanical movement serves to reduce the stiffness of the fiber structure and preferably to prevent.
  • This mechanical movement of the fiber structure preferably takes place from a residual moisture content of the fiber structure of less than 20%, more preferably less than 10%.
  • the "residual moisture" is determined by a standard method by weighing the sample / fiber structure before and after a drying step. Drying takes place in a drying oven until the weight of the sample / fiber structure no longer changes / remains constant (to constant weight), preferably at 110 ° C., and under conditions in which the binder does not cure yet. For resin / binder systems that cure already at 110 ° C, a correspondingly lower temperature is selected. The method for determining the residual moisture differs from the determination of the equilibrium moisture, which is also described herein.
  • the mechanical movement is preferably achieved by rolling or the deflection over several rollers.
  • a meandering reversal of the mat web is carried out over small radii.
  • the drying is carried out by the repeated passage through a perforated drum dryer with downstream deflection rollers.
  • the drying is carried out in a perforated drum dryer with 4 to 6 drums (corresponding to (1), page 346) and downstream pulleys.
  • the still warm, almost dry felt at a residual moisture content of less than 20%, preferably less than 10% is deflected over several rolls in order to introduce a mechanical movement into the system. This results in contrast to a conventional (known in the art) leading out of the nonwoven web from the dryers used a flexible, movable felt.
  • steps (i) (mechanical movement during drying) and (ii) (needling subsequent to drying) of step (b) are performed either alternatively or in combination.
  • the sheet-like fiber structure is preferably used in almost completely dried or almost dry state, ie with residual moisture ⁇ 10%, preferably a moisture content between 0 and 8 wt .-%.
  • This step of needling is directly connected to the drying process or is performed separately.
  • the needling is preferably carried out in a conventional in the art needle machine, preferably with double-sided needling.
  • step (ii) of (b) the almost dry felt web (residual moisture ⁇ 10%) by a commercially available needle machine guided.
  • step (c) the composite according to the invention, which is characterized in more detail below, is obtained.
  • step (i) mechanical movement during drying
  • step (ii) needleling subsequent to drying
  • the product of the process of the invention is a composite of the fibrous structure and binder which has advantageous properties over conventional composites.
  • the composite according to the invention is a flexible composite because it is a flexible, deformable and "soft" composite (felt) with sufficient binder content, preferably in the range of 15 to 30 wt .-% (solids content of binder based on the sheet-like fiber structure)). Moreover, the composite material according to the invention has only a low residual moisture content and can therefore be stored open for months without appreciable change in humidity. In one embodiment, the weight loss of the treated treated felt upon open storage and 16 to 22% resin / binder content is 6 to 9% by weight; for weight loss see below.
  • the composite according to the invention is deformable in the same way as untreated felts and can be cured in a H meetpreßtechnikmaschine to form a dimensionally stable part.
  • Hard composite or hard mat means that the composite / mat can not be wound up on the surface using commercially available cores (diameter approx. 15 to 25 cm) without noticeable cracks.
  • Such a binder-containing felt (composite according to the invention) can therefore be prepared in known manner, e.g. used for the production of automotive parts.
  • a preferred embodiment of the composite of the invention such as a resinated felt mat, has a preferred basis weight in the range of 800 to 2,200 g / m 2 .
  • the respective preferred basis weights depend on the further use. use preferred basis weights Interior door panels 1,600 - 2,000 g / m 2 hat racks 1,800 - 2,200 g / m 2 headliners 800 - 1,100 g / m 2 Backrest shells for seats 1,700 - 2,200 g / m 2
  • parameters of the composite of the invention are component related, i. they are determined by the further use of the composite.
  • Other parameters are blank formats, variations in the needling density of the starting mat (which influences warpage behavior), other fiber combinations (e.g., hemp instead of flax).
  • the composite of the invention is distinguishable from conventional composites, e.g. by microscopic observation or by observation through a magnifying glass, z. B. 2- to 4-fold linear magnification with a magnifying glass - as in the accompanying figures.
  • the attached figures are in original scale and in 2x magnification (see also drawn scale).
  • the soft, impregnated and dried composite / felt obtained in accordance with the invention can be stored open, wherein a moisture dependent on the fibers used, the binder used and the room humidity is established as equilibrium moisture content from the environment.
  • the "equilibrium moisture content" is determined by the weight loss during hot pressing, resulting in curing of the binder.
  • the weight loss in this determination method additionally includes possible cleavage products from the curing reaction (in the binder Acrodur® reaction water from the Polykondensationsrepress) and at higher temperature vaporizable substances from natural fibers, such as waxes and oils.
  • the method for determining the equilibrium moisture differs from the determination of the residual moisture, which is also described herein.
  • the equilibrium moisture content is preferred by the weight loss when pressing the impregnated composite / felt at 210 ° C / 60 sec.
  • it also contains and evaporates constituents from the fibers, such as the natural fibers, and possibly constituents exiting from the binder as reaction water.
  • the impregnated mat / composite is weighed prior to insertion into the hot pressing tool and then after pressing at 210 ° C., 60 seconds. weighed back while still warm. From the difference, the weight loss, referred to as moisture, in percent, based on the dry pressed part obtained, calculated.
  • the result is a "soft”, pliable and deformable felt, a flexible composite that is capable of forming even more deformed parts without pretreatment or preforming processes by forming in a hot stamping tool without cracking or breakage.
  • the process is therefore suitable, unlike the prior art, to produce soft, binder precoated and dry felts, from which e.g. More deformed automotive parts, such as supports for door panels, can be produced.
  • the flexible composite materials according to the invention are used as molded parts and shaped bodies, preferably in the automobile industry.
  • Typical applications of moldings and moldings for the automotive industry are: door panels, hat racks, instrument panels, headliners, etc.
  • a "pulp” is a textile raw material from vegetable, animal, mineral or synthetically produced fibers, eg. Eg silk, artificial silk.
  • Nonwoven (also short “fleece”) is a textile fabric made of individual fibers. In contrast, fabrics, knits and knits are made from yarns and membranes are made from films.
  • a “fleece” consists of loosely connected fibers, which are not yet connected to each other. The strength of a fleece is based only on the fiber's own liability, but can be influenced by Avivagen. To be able to process and use the fleece, it must be solidified, for which various methods can be used. Only a solidified nonwoven is to be called a nonwoven fabric. In colloquial language, this difference is not made.
  • a “felt” is a fabric of pressed, entangled, non-woven, mostly animal fibers.
  • a “felt” is a nonwoven fabric made of wool and / or other textile fibers.
  • the cleaned, combed and processed to fleece and possibly colored raw wool or fibers are brought by a mostly mechanical processing (felting and walking) in a solid material.
  • the individual fibers are intertwined with each other.
  • the dry wool is shaped using special needles. This method is the precursor of needling with a needle bar. Needle felt is made mechanically with numerous barbed needles. In this case, the barbs are arranged in reverse as in a harpoon, so that the fibers are pressed into the felt and the needle easily goes out again.
  • needled nonwovens can be produced not only from wool but also from virtually all other fibers. Needle felt is today's industrially produced felt. In addition, the entanglement with a pulsed water jet or with a binder is still possible. Here also fibers without scale structure can be used (eg: polyamide, polyester).
  • a “composite” is a material of two or more bonded materials.
  • the composite material has different material properties than its individual components. Material properties and geometry of the components are important for the properties of the composites. In particular, size effects often play a role.
  • the connection is made by fabric or form-fitting or a combination of both.
  • the first part was completely dried after padding and then left open for 48 hours to reach equilibrium moisture under room conditions.
  • a part of row A was passed through a needle machine after complete drying and subsequent adaptation to room conditions in a further step.
  • a part of row B was passed through a needle machine after adaptation to room conditions in a further step.
  • Table 1 shows the individual values of the blanks of the rows A-D during fouling and pressing.
  • Natural fiber mat used (starting material):
  • the resin application corresponds to a resin solids content of 25.9 wt .-% based on the natural fiber mat.
  • the wet blanks were dried in a laboratory drying oven at 110 ° C. in a simple position next to each other.
  • an untreated natural fiber mat was provided with sufficient punched holes, into which the prepared samples of rows C and D were then sewn.
  • the untreated natural fiber mat served exclusively as a transport aid through the needle machine.
  • Row A Hard, stiff, "like a board”.
  • Row B Blanks pliable, clearly noticeable resistance, goes back to starting position.
  • Row C Blanks flexible, slightly stiffer than row B.
  • Row D Blanks easy to bend, character like a non-resinous, strong needled NF mat, does not go back to starting position.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nonwoven Fabrics (AREA)

Claims (20)

  1. Procédé de fabrication d'une matière première composite flexible constituée de structures fibreuses de forme plane et de produits liants, comprenant les étapes
    (a) de traitement d'une structure fibreuse de forme plane avec du produit liant,
    (b) de séchage de la structure fibreuse de forme plane traitée dans des conditions qui ne conduisent pas au durcissement du produit liant,
    (i) où, pendant le séchage, on produit un mouvement mécanique, de préférence à partir d'une humidité résiduelle de la structure fibreuse inférieure à 20 %,
    le mouvement mécanique diminuant, et de préférence empêchant, la structure fibreuse de devenir rigide,
    et/ou,
    (ii) la structure fibreuse de forme plane traitée et séchée jusqu'à une humidité résiduelle inférieure à 10 % étant ensuite aiguilletée mécaniquement après le séchage,
    (c) d'obtention de la matière première composite flexible.
  2. Procédé selon la revendication 1 où la structure fibreuse de forme plane comprend des fibres de plantes et est en particulier un feutre de fibres de plantes ou un rembourrage de fibres de plantes.
  3. procédé selon les revendications 1 ou 2 où les fibres de plantes sont choisies parmi les fibres de jute, de sisal, de bananier, de coco, de lin, de chanvre, de kénaf, de coton et des mélanges d'entre elles.
  4. Procédé selon l'une des revendications de 1 à 3 où la structure fibreuse de forme plane présente un poids par unité de surface de 100 g/m2 à 4000 g/m2, en particulier de 600 g/m2 à 1900 g/m2.
  5. Procédé selon l'une des revendications de 1 à 4 où le produit liant est choisi parmi des produits liants thermodurcissables.
  6. Procédé selon l'une des revendications de 1 à 5 où le produit liant se présente sous la forme d'une solution ou d'une dispersion.
  7. Procédé selon l'une des revendications de 1 à 6 où le traitement avec le produit liant dans l'étape (a) s'effectue au moyen d'un procédé de trempage.
  8. Procédé selon l'une des revendications de 1 à 7 où le séchage s'effectue à une température qui ne dépasse pas la température de durcissement du produit liant.
  9. Procédé selon l'une des revendications de 1 à 8 où le séchage est effectué jusqu'à une humidité résiduelle de moins de 20 %, en particulier de moins de 10 %.
  10. Procédé selon l'une des revendications de 1 à 9 où le séchage s'effectue jusqu'à une humidité résiduelle de moins de 20 %, en particulier de moins de 10 % et qu'ensuite le mouvement mécanique a lieu.
  11. Procédé selon la revendication 10 où le mouvement mécanique est effectué par un damage, en particulier par le croisement de plusieurs damages.
  12. Procédé selon l'une des revendications de 1 à 11 où le séchage s'effectue pour une humidité résiduelle < 10 %, de préférence une humidité entre 0 et 8 % en poids à l'équilibre.
  13. Procédé selon la revendication 12 où la structure fibreuse de forme plane traitée et séchée jusqu'à une humidité résiduelle < 10 %, qui présente de préférence une humidité entre 0 et 8 % en poids, est ensuite aiguilletée mécaniquement après le séchage.
  14. Matière première composite flexible fabriquée par un procédé selon l'une des revendications de 1 à 13 où la matière première composite présente une humidité à l'équilibre < 10 %.
  15. Matière composite selon la revendication 14 fabriquée par le mélange de respectivement 50 % de fibres de lin et 50 % de fibres de kénaf et d'une dispersion d'acrylate aqueuse en tant que produit de liaison, de préférence avec une proportion de corps solide-produit liant de 15 à 30 % en poids.
  16. Matière composite selon les revendications 14 ou 15 qui présente une humidité à l'équilibre d'environ 7 %.
  17. Matière composite selon l'une des revendications de 14 à 16 qui présente un poids par unité de surface de 800 g/m2 à 2200 g/m2.
  18. Utilisation d'une matière composite l'une des revendications de 14 à 17 en tant que pièce moulée, de préférence dans l'industrie automobile.
  19. Utilisation selon la revendication 18 pour la fabrication de coques de valises ; de couvertures de machines ; de compartiments pour des armoires, des tiroirs et des panneaux arrières de meubles ; des coques et des dossiers d'appui pour des chaises, des chaises de bureau, des meubles de jardin ; en tant que matière première de support pour du papier décoratif, du tissu de décoration et du placage de bois.
  20. Procédé pour le moulage par compression comprenant
    l'utilisation d'une matière composite selon l'une des revendications de 14 à 17
    et le chauffage de la matière composite à une température qui est supérieure ou égale à la température de durcissement du produit liant.
EP08003298A 2008-02-22 2008-02-22 Matière première composite flexible, son procédé de fabrication et d'utilisation Not-in-force EP2093318B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL08003298T PL2093318T3 (pl) 2008-02-22 2008-02-22 Elastyczny materiał kompozytowy, sposób jego wytwarzania oraz jego zastosowanie
EP08003298A EP2093318B1 (fr) 2008-02-22 2008-02-22 Matière première composite flexible, son procédé de fabrication et d'utilisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08003298A EP2093318B1 (fr) 2008-02-22 2008-02-22 Matière première composite flexible, son procédé de fabrication et d'utilisation

Publications (2)

Publication Number Publication Date
EP2093318A1 EP2093318A1 (fr) 2009-08-26
EP2093318B1 true EP2093318B1 (fr) 2012-12-12

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EP (1) EP2093318B1 (fr)
PL (1) PL2093318T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009059975A1 (de) * 2009-12-22 2011-06-30 Sitech Sitztechnik GmbH, 38442 Sitzstruktur
DE102013101937A1 (de) * 2013-02-27 2014-08-28 Georg-August-Universität Göttingen Stiftung Öffentlichen Rechts Holz- und Verbundwerkstoffplatte
DE102019118806A1 (de) 2019-07-11 2021-01-14 Peter Schweiger Materialzusammensetzung u.a. für Aufbissschienen in der Dentaltechnik, Verfahren zu ihrer Herstellung und ihre Verwendung
IT202300011724A1 (it) * 2023-06-08 2024-12-08 Dv8 Id S R L Manufatto in materiale composito e procedimento di realizzazione di detto manufatto

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2822298A (en) * 1955-08-29 1958-02-04 Armstrong Cork Co Fibrous products
NL6511760A (fr) * 1964-09-10 1966-03-11
JPS5888019A (ja) * 1981-11-18 1983-05-26 Kanai Hiroyuki 高性能フイルタ−エレメント及びその製造方法
AT387798B (de) * 1987-12-11 1989-03-10 Kuehnsdorfer Gmbh Verfahren zur herstellung einer lagerfaehigen, handhabbaren fasermatte und nach dem verfahren hergestellte fasermatte
DE19949592A1 (de) 1999-10-14 2001-04-19 Basf Ag Thermisch härtbare Polymerdipersion
JP3685125B2 (ja) * 2001-11-26 2005-08-17 松下電工株式会社 プリプレグの製造方法
DE102004016646A1 (de) 2004-03-31 2005-10-27 Basf Ag Verfahren zur Herstellung von Halbzeug und Formteilen
DE102004061144A1 (de) * 2004-12-16 2006-06-22 Basf Ag Verwendung formaldehydfreier wässriger Bindemittel für Substrate

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PL2093318T3 (pl) 2013-05-31
EP2093318A1 (fr) 2009-08-26

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