EP1588815B1 - Method for producing plant felt from tow - Google Patents

Method for producing plant felt from tow Download PDF

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Publication number
EP1588815B1
EP1588815B1 EP05370007A EP05370007A EP1588815B1 EP 1588815 B1 EP1588815 B1 EP 1588815B1 EP 05370007 A EP05370007 A EP 05370007A EP 05370007 A EP05370007 A EP 05370007A EP 1588815 B1 EP1588815 B1 EP 1588815B1
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EP
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Prior art keywords
ground material
hards
fibers
fibrous
brewed
Prior art date
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EP05370007A
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German (de)
French (fr)
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EP1588815A1 (en
Inventor
Michèle Queneudec T'Kint
Blaise Dupré
Rose-Marie Dheilly
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Universite de Picardie Jules Verne
Institut Technique du Lin ITL
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Universite de Picardie Jules Verne
Institut Technique du Lin ITL
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Application filed by Universite de Picardie Jules Verne, Institut Technique du Lin ITL filed Critical Universite de Picardie Jules Verne
Priority to PL05370007T priority Critical patent/PL1588815T3/en
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds

Definitions

  • the invention relates to a method of manufacturing vegetable felts from tows and the product obtained by this process and in particular its use in thermal insulation and / or sound or in the field of packaging.
  • the seats and the fuel tanks of the first aircraft were natural fibers impregnated with some polymer, which acted as the binder.
  • plant-based fibers can be envisaged in many industrial fields, particularly automobiles.
  • the materials obtained from natural fibers have many disadvantages, in particular as regards their chemical composition and their manufacturing process.
  • thermosetting matrix such as an epoxy, vinylester or polyester resin.
  • Document is known DE-42 42,538 a process for the manufacture of a textile based on natural fibers, which does not use tows.
  • the starting material may be flax or not.
  • the cohesion between the fibers of the product is obtained after extraction of the pectins from the fibers and use of the pectins as binding agent. Hot water, or water vapor dissolves the pectins of a linen cloth. This web is then subjected to a calendering step to obtain the cohesion of the fibers.
  • the object of the present invention is to provide a method of manufacturing vegetable felts which overcomes the aforementioned drawbacks, particularly with regard to the manufacturing process.
  • Another object of the present invention is to provide the manufacture of 100% vegetable felts.
  • the tows used in the present invention are obtained using conventional methods of separating the woody portion of the fiber from textile plants.
  • the fibers used according to the present invention are heavily loaded with shives, which makes it possible to efficiently valorize many more or less woody plant co-products and to respect the environmental requirements of recycling.
  • the presence of pectic dust is not a handicap and the tows can be used without cleaning at the exit of the scutch.
  • cutting is meant the mechanical operation of separating the textile fibers from the rest of the plant stem.
  • the felt obtained are 100% vegetable.
  • the fibers used in the process can be bleached beforehand by chemical treatment without affecting the process.
  • the tows are ground to form a fibrous ground material. More precisely, in this step, the tows are crushed in order to turn them into fluffy flakes.
  • cellulosic and / or lignocellulosic agricultural co-products may optionally be incorporated in a mixture, and thus the tows are ground to form a fibrous millstock optionally with other cellulosic and / or lignocellulosic co-products.
  • tows may be substituted in part, in variable proportions up to 95%, depending on the physicochemical, hydric, mechanical and thermal characteristics desired by other tows, or more generally by any other cellulosic and / or lignocellulosic plant substance, or even in a mixture, in particular beet pulp.
  • the type of grinding can be adapted to the starting materials and the desired texture, producing felts that can be more or less fine depending on the proportion of woody fractions and the type of grinding.
  • the tows are tows of flax.
  • Flax has the advantage of having good mechanical properties among other plant fibers (table below) and being easy to supply in France.
  • flax tow can be used, whether from linseed or flax fiber, whatever the varieties and whatever the treatments in culture and the degree of retting.
  • "Retting” means the microbial action intended to remove the pectic cement coating cellulosic fibers of the bark of textile plants, such as flax, and to isolate the latter in order to obtain the tow. .
  • the ground materials are stirred in a liquid medium.
  • the stirring is carried out cold in an aqueous medium, and can be carried out manually or mechanically.
  • the stirring remains very short, of the order of one minute and the water is supplied in sufficient quantity to fully soak the fiber, thereby eliminating part of the water-soluble molecules.
  • the stirred fiber mill is subjected to a heat treatment. More particularly, the heat treatment to which the fibrous ground material is subjected is carried out by microwaves.
  • the processing time is adapted to the power of the microwave and its mode of operation, namely continuous or discontinuous.
  • good results have been obtained with a frequency of 2.450 MHz and a power of 900 W, and with a batch treatment time of the order of 1 min for 10 g of dry ground material.
  • Microwave heating in humid environments has the advantage of speed, of lack of inertia, because stops and start-ups are instantaneous, ease of use with easy power control .
  • the molecular agitation within the mixture is sufficient to entangle the fibers while a fraction of the water is removed by evaporation, which promotes the subsequent drying of the product.
  • the stirred fibrous ground material is molded to form a felt. More specifically, after the microwave treatment, the wet fibrous mixture is cast in a hot mold and in particular pressed to remove most of the water. With pressing, the fiber sample is reduced to about half of its initial volume and more or less compacting can be applied according to the desired texture.
  • the felt obtained is dried. More specifically, and according to one example, the drying of the fibers can be carried out in two stages, a first drying step with the fibers in the mold, and a second step with the demolded fibers. In other embodiments, the drying may be carried out by microwave or by infrared or any suitable treatment.
  • Another object of the present invention relates to the product obtained by the process which is the subject of this patent.
  • This product namely a 100% vegetable felt, has the advantage of being compatible with mineral materials, to be able to be shaped at will during the process and to retain its shape after drying.
  • the felts are completely recyclable in closed circuit for the production of new felts or for the production of compost, in the case of end-of-life felts.
  • the felts obtained by the present process can be rendered non-flammable.
  • the product obtained according to the method described in the present invention is used in thermal and / or sound insulation, as well as in various furniture accessories, in the automotive industry, toy and decoration industries. , packaging, horticulture, etc.

Abstract

The procedure consists of grinding the tow to separate the fibres, which are mixed with a liquid such as cold water, either manually or mechanically, and heated by microwaves. The fibres are then hot-moulded to eliminate most of the water, and dried in the mould in a ventilated chamber at about 70 deg C for 24 hours. The tow used for the procedure can be obtained, for example, from flax plants or beet.

Description

L'invention concerne un procédé de fabrication de feutres végétaux à partir d'étoupes ainsi que le produit obtenu par ce procédé et notamment son utilisation dans l'isolation thermique et/ou phonique ou encore dans le domaine de l'emballage.The invention relates to a method of manufacturing vegetable felts from tows and the product obtained by this process and in particular its use in thermal insulation and / or sound or in the field of packaging.

L'utilisation des fibres naturelles, notamment végétales, dans de nombreuses applications remonte aux origines de l'homme. Ces fibres étaient jusqu'au début du XXème siècle les seules fibres utilisées pour la réalisation de vêtements, de cordages, et dans de nombreuses autres réalisations artisanales ou dans l'industrie naissante, telles que l'industrie automobile, le transport aérien, ferroviaire, etc.The use of natural fibers, including plants, in many applications goes back to the origins of man. These fibers were until the early twentieth century the only fiber used to make clothing, rope, and many other craft projects or infant industry such as the automotive, aviation, railway etc.

A la fin du XIX et début du XXème siècle, les sièges et les réservoirs à carburant des premiers avions étaient en fibres naturelles imprégnées d'un peu de polymère, qui jouait le rôle de liant.At the late nineteenth and early twentieth century, the seats and the fuel tanks of the first aircraft were natural fibers impregnated with some polymer, which acted as the binder.

A partir des années 1950, les fibres synthétiques s'imposèrent grâce notamment au bas prix du pétrole et au développement de la pétrochimie. Les fibres d'origine naturelle ne retiennent à nouveau l'attention que depuis les années 1990.From the 1950s, synthetic fibers became essential thanks to the low price of oil and the development of petrochemicals. Naturally occurring fibers have been gaining attention only since the 1990s.

L'utilisation des fibres d'origine naturelle, notamment végétale, au lieu des fibres de verre, permet de réaliser des composites dont la masse volumique est notablement inférieure à celle obtenue avec des fibres de verre pour les mêmes caractéristiques mécaniques.The use of fibers of natural origin, especially plant fibers, instead of glass fibers, makes it possible to produce composites whose density is significantly lower than that obtained with glass fibers for the same mechanical characteristics.

Par ailleurs, la cellulose étant le polymère le plus répandu de la biosphère, l'utilisation de cette ressource de matière primaire, renouvelable par culture, permet d'économiser des réserves naturelles utilisées pour la production de certaines fibres synthétiques, comme par exemple le pétrole.Moreover, since cellulose is the most widespread polymer in the biosphere, the use of this resource of primary material, renewable by culture, saves natural reserves used for the production of certain synthetic fibers, for example oil .

En outre, l'utilisation des fibres d'origine végétale peut être envisagée dans de nombreux domaines industriels, notamment automobiles.In addition, the use of plant-based fibers can be envisaged in many industrial fields, particularly automobiles.

Toutefois, bien que très répandus, les matériaux obtenus à partir des fibres naturelles présentent de nombreux inconvénients, notamment en ce qui concerne leur composition chimique et leur procédé de fabrication.However, although widely used, the materials obtained from natural fibers have many disadvantages, in particular as regards their chemical composition and their manufacturing process.

Actuellement, les matériaux obtenus à partir des fibres naturelles, sont fabriqués soit par aiguillage à partir de fibres courtes faiblement chargées en anas, soit en imprégnant les fibres naturelles d'une matrice thermodurcissable, telle qu'une résine époxy, vinylester ou polyester.Currently, materials obtained from natural fibers, are made either by switching from short fibers weakly loaded in shives, either by impregnating the natural fibers with a thermosetting matrix, such as an epoxy, vinylester or polyester resin.

On connait du document FR-2.705.369 un procédé pour la fabrication d'un non-tissé à partir de lin. Les fibres nobles, à savoir les filasses, sont utilisées pour la réalisation de ce non-tissé.We know of the document FR-2705369 a process for producing a nonwoven from linen. The noble fibers, namely the tows, are used for the realization of this nonwoven.

On connaît du document DE-42 42 538 un procédé pour la fabrication d'un textile à base de fibres naturelles, qui n'utilise pas d'étoupes. Le matériau de départ peut être du lin roui ou non. La cohésion entre les fibres du produit est obtenue après extraction des pectines des fibres et utilisation des pectines comme agent liant. De l'eau chaude, ou de la vapeur d'eau permet de dissoudre les pectines d'une nappe de lin. Cette nappe est ensuite soumise à une étape de calandrage pour obtenir la cohésion des fibres.Document is known DE-42 42,538 a process for the manufacture of a textile based on natural fibers, which does not use tows. The starting material may be flax or not. The cohesion between the fibers of the product is obtained after extraction of the pectins from the fibers and use of the pectins as binding agent. Hot water, or water vapor dissolves the pectins of a linen cloth. This web is then subjected to a calendering step to obtain the cohesion of the fibers.

Le but de la présente invention est de proposer un procédé de fabrication de feutres végétaux qui pallie les inconvénients précités, notamment en ce qui concerne le procédé de fabrication.The object of the present invention is to provide a method of manufacturing vegetable felts which overcomes the aforementioned drawbacks, particularly with regard to the manufacturing process.

Un autre but de la présente invention est de proposer la fabrication de feutres 100 % végétaux.Another object of the present invention is to provide the manufacture of 100% vegetable felts.

D'autres buts et avantages de la présente invention apparaîtront au cours de la description qui va suivre qui n'est donnée qu'à titre indicatif et qui n'a pas pour but de la limiter.Other objects and advantages of the present invention will become apparent from the following description which is given for information only and which is not intended to limit it.

La présente invention concerne un procédé pour la fabrication de feutres végétaux à partir d'étoupes dans lequel :

  • on obtient les étoupes en séparant la partie ligneuse de la fibre,
  • on broie les étoupes pour former un broyat fibreux,
  • on brasse le broyat fibreux en milieu liquide,
  • on soumet le broyat fibreux brassé à un traitement thermique par micro-ondes,
  • on moule le broyat fibreux brassé pour former un feutre,
  • on sèche le feutre obtenu.
The present invention relates to a process for the manufacture of vegetable felts from tows in which:
  • we obtain the tows by separating the woody part of the fiber,
  • the tows are ground to form a fibrous ground material,
  • the fibrous ground material is stirred in a liquid medium,
  • the stirred fibrous ground material is subjected to a heat treatment by microwaves,
  • the stirred fibrous ground material is molded to form a felt,
  • the felt obtained is dried.

La présente invention sera mieux comprise à la lecture de la description suivante.The present invention will be better understood on reading the following description.

Les étoupes utilisées dans la présente invention sont obtenues en utilisant des méthodes classiques de séparation de la partie ligneuse de la fibre dans les plantes textiles.The tows used in the present invention are obtained using conventional methods of separating the woody portion of the fiber from textile plants.

Les fibres utilisées selon la présente invention sont fortement chargées en anas, ce qui permet de valoriser de nombreux coproduits végétaux plus ou moins ligneux et de respecter les impératifs environnementaux de recyclage.The fibers used according to the present invention are heavily loaded with shives, which makes it possible to valorize many more or less woody plant co-products and to respect the environmental requirements of recycling.

Ainsi, la présence de poussières pectiques n'est pas un handicap et les étoupes peuvent être utilisées sans nettoyage à la sortie du teillage. Par « teillage », on entend l'opération mécanique qui consiste à séparer les fibres textiles du reste de la tige du végétal.Thus, the presence of pectic dust is not a handicap and the tows can be used without cleaning at the exit of the scutch. By "scutching" is meant the mechanical operation of separating the textile fibers from the rest of the plant stem.

Par ailleurs, selon la présente invention, les feutres obtenus sont 100 % végétaux.Furthermore, according to the present invention, the felt obtained are 100% vegetable.

En outre, les fibres utilisées lors du procédé peuvent être blanchies préalablement par traitement chimique sans incidence sur le procédé.In addition, the fibers used in the process can be bleached beforehand by chemical treatment without affecting the process.

Selon l'invention, dans une première étape, on broie les étoupes pour former un broyat fibreux. Plus précisément, dans cette étape, on broie les étoupes afin de les transformer en flocons cotonneux.According to the invention, in a first step, the tows are ground to form a fibrous ground material. More precisely, in this step, the tows are crushed in order to turn them into fluffy flakes.

Cela étant, d'autres coproduits agricoles cellulosiques et/ou lignocellulosiques peuvent éventuellement être incorporés en mélange, et ainsi on broie les étoupes pour former un broyat fibreux éventuellement avec d'autres coproduits cellulosiques et/ou lignocellulosiques.However, other cellulosic and / or lignocellulosic agricultural co-products may optionally be incorporated in a mixture, and thus the tows are ground to form a fibrous millstock optionally with other cellulosic and / or lignocellulosic co-products.

Plus précisément, les étoupes, de lin par exemple, peuvent être substituées en partie, dans des proportions variables pouvant atteindre 95 %, suivant les caractéristiques physico chimiques, hydriques, mécaniques et thermiques souhaitées, par d'autres étoupes, ou plus généralement, par tout autre substance végétale cellulosique et/ou lignocellulosique, voire en mélange, dont notamment les pulpes de betteraves.More specifically, tows, linseed for example, may be substituted in part, in variable proportions up to 95%, depending on the physicochemical, hydric, mechanical and thermal characteristics desired by other tows, or more generally by any other cellulosic and / or lignocellulosic plant substance, or even in a mixture, in particular beet pulp.

Le type de broyage peut être adapté aux matériaux de départ et à la texture souhaitée, produisant des feutres qui peuvent être plus ou moins fins suivant la proportion de fractions ligneuses et le type de broyage.The type of grinding can be adapted to the starting materials and the desired texture, producing felts that can be more or less fine depending on the proportion of woody fractions and the type of grinding.

Selon un mode particulier de la présente invention, les étoupes sont des étoupes de lin.According to a particular embodiment of the present invention, the tows are tows of flax.

Le lin a l'avantage de présenter de bonnes propriétés mécaniques parmi d'autres fibres végétales (tableau ci-dessous) et d'être d'approvisionnement facile en France. Cellulose
(%) Contrainte de traction
(MPa) Allongement à la rupture densité Sisal 67-78 507-508 2-4.3 1.5 Coir 37-43 106-270 15-47 1.45-1.5 Coton 90 350 6-7 1.5 Lin 71 780-2000 2-3 1.2 Banane 64-66 529-914 3-10 1.35 Flax has the advantage of having good mechanical properties among other plant fibers (table below) and being easy to supply in France. Cellulose
(%) Traction stress
(MPa) Elongation at break density Sisal 67-78 507-508 2-4.3 1.5 coir 37-43 106-270 15-47 1.45-1.5 Cotton 90 350 6-7 1.5 Linen 71 780-2000 2-3 1.2 Banana 64-66 529-914 3-10 1.35

En outre, les étoupes de lin peuvent être utilisées, qu'elles soient issues de lin oléagineux ou de lin fibre, quelles que soient les variétés et quels que soient les traitements subis en culture et le degré de rouissage. Par « rouissage », on entend l'action microbienne ayant pour but d'éliminer le ciment pectique enrobant les fibres cellulosiques de l'écorce des plantes textiles, telles que le lin, et d'isoler ces dernières en vue d'obtenir la filasse.In addition, the flax tow can be used, whether from linseed or flax fiber, whatever the varieties and whatever the treatments in culture and the degree of retting. "Retting" means the microbial action intended to remove the pectic cement coating cellulosic fibers of the bark of textile plants, such as flax, and to isolate the latter in order to obtain the tow. .

Selon la présente invention, et après la première étape de broyage des étoupes afin d'obtenir un broyat fibreux, dans une deuxième étape on brasse les broyats en milieu liquide.According to the present invention, and after the first step of grinding the tows in order to obtain a fibrous ground material, in a second step the ground materials are stirred in a liquid medium.

Selon un mode particulier de la présente invention, le brassage est réalisé à froid en milieu aqueux, et peut être réalisé manuellement ou mécaniquement. Le brassage reste très court, de l'ordre de la minute et l'eau est apportée en quantité suffisante pour imbiber totalement la fibre, éliminant de cette façon une partie des molécules hydrosolubles.According to a particular embodiment of the present invention, the stirring is carried out cold in an aqueous medium, and can be carried out manually or mechanically. The stirring remains very short, of the order of one minute and the water is supplied in sufficient quantity to fully soak the fiber, thereby eliminating part of the water-soluble molecules.

Selon la présente invention et après la deuxième étape, on soumet le broyat fibreux brassé à un traitement thermique. Plus particulièrement, le traitement thermique auquel le broyat fibreux est soumis est effectué par micro-ondes. Le temps de traitement est adapté à la puissance de l'appareil micro-ondes et à son mode de fonctionnement, à savoir en continu ou discontinu.According to the present invention and after the second step, the stirred fiber mill is subjected to a heat treatment. More particularly, the heat treatment to which the fibrous ground material is subjected is carried out by microwaves. The processing time is adapted to the power of the microwave and its mode of operation, namely continuous or discontinuous.

A titre d'exemple, non limitatif, on a obtenu de bons résultats avec une fréquence de 2.450 MHz et une puissance de 900 W, et avec un temps de traitement en discontinu de l'ordre de 1 mn pour 10 g de broyat sec.By way of nonlimiting example, good results have been obtained with a frequency of 2.450 MHz and a power of 900 W, and with a batch treatment time of the order of 1 min for 10 g of dry ground material.

L'échauffement par micro-ondes en milieu humide présente l'avantage de la rapidité, de l'absence d'inertie, car les arrêts et les mises en route sont instantanés, de la facilité d'utilisation avec une régulation de la puissance aisée.Microwave heating in humid environments has the advantage of speed, of lack of inertia, because stops and start-ups are instantaneous, ease of use with easy power control .

En outre, le transfert de l'énergie est rapide dans toute la masse de broyat sans surchauffe superficielle.In addition, the transfer of energy is rapid throughout the mass of ground material without superheating surface.

Par ailleurs, l'agitation moléculaire au sein du mélange suffit pour enchevêtrer les fibres pendant qu'une fraction de l'eau s'élimine par évaporation, ce qui favorise le séchage postérieur du produit.In addition, the molecular agitation within the mixture is sufficient to entangle the fibers while a fraction of the water is removed by evaporation, which promotes the subsequent drying of the product.

Selon une quatrième étape, on moule le broyat fibreux brassé pour former un feutre . Plus précisément, après le traitement micro-ondes, le mélange fibreux humide est coulé à chaud dans un moule et notamment pressé pour éliminer la plus grande partie de l'eau. Avec le pressage, l'échantillon de fibres est ramené à environ la moitié de son volume initial et un compactage plus ou moins important peut être appliqué suivant la texture souhaitée.In a fourth step, the stirred fibrous ground material is molded to form a felt. More specifically, after the microwave treatment, the wet fibrous mixture is cast in a hot mold and in particular pressed to remove most of the water. With pressing, the fiber sample is reduced to about half of its initial volume and more or less compacting can be applied according to the desired texture.

Selon une cinquième étape, on sèche le feutre obtenu. Plus précisément, et selon un exemple, le séchage des fibres peut être réalisé en deux étapes, une première étape de séchage avec les fibres dans le moule, et une deuxième étape avec les fibres démoulées. Dans d'autres modes de réalisation, le séchage pourra être effectué par hyperfréquence ou par infrarouge ou tout traitement adapté.According to a fifth step, the felt obtained is dried. More specifically, and according to one example, the drying of the fibers can be carried out in two stages, a first drying step with the fibers in the mold, and a second step with the demolded fibers. In other embodiments, the drying may be carried out by microwave or by infrared or any suitable treatment.

On a obtenu de bons résultats en réalisant le séchage dans une enceinte ventilée, à une température de l'ordre de 70 °, pendant 24 heures et avec les fibres dans le moule. Les fibres ont été ensuite démoulées et le séchage se poursuit jusqu'à masse constante. Le temps de séchage peut s'adapter en fonction de la taille de l'échantillon de fibres.Good results have been obtained by carrying out the drying in a ventilated enclosure, at a temperature of about 70 °, for 24 hours and with the fibers in the mold. The fibers were then demolded and drying continued to constant mass. The drying time can be adjusted according to the size of the fiber sample.

Un autre but de la présente invention concerne le produit obtenu par le procédé objet de ce brevet.Another object of the present invention relates to the product obtained by the process which is the subject of this patent.

Ce produit, à savoir un feutre 100 % végétal, présente l'avantage d'être compatible avec des matériaux minéraux, de pouvoir être façonné à volonté lors du procédé et de conserver sa forme après séchage.This product, namely a 100% vegetable felt, has the advantage of being compatible with mineral materials, to be able to be shaped at will during the process and to retain its shape after drying.

En outre, les feutres sont totalement recyclables en circuit fermé pour la production de nouveaux feutres ou pour la production de compost, dans le cas de feutres en fin de vie.In addition, the felts are completely recyclable in closed circuit for the production of new felts or for the production of compost, in the case of end-of-life felts.

Par ailleurs, les feutres obtenus par le présent procédé peuvent être rendus ininflammables.In addition, the felts obtained by the present process can be rendered non-flammable.

Selon la présente invention, le produit obtenu selon le procédé décrit dans la présente invention est utilisé dans l'isolation thermique et/ou phonique, ainsi que dans divers accessoires d'ameublement, dans l'industrie automobile, industries du jouet et de la décoration, de l'emballage, de l'horticulture, etc.According to the present invention, the product obtained according to the method described in the present invention is used in thermal and / or sound insulation, as well as in various furniture accessories, in the automotive industry, toy and decoration industries. , packaging, horticulture, etc.

Claims (14)

  1. A process for the manufacture of vegetables felts from hards wherein:
    - the hards are obtained by separating the ligneous portion from the fibre,
    - the hards are ground to form a fibrous ground material,
    - the fibrous ground material is brewed in liquid medium,
    - the brewed fibrous ground material is subjected to a microwave heat treatment,
    - the brewed fibrous ground material is moulded to form a felt,
    - the obtained felt is dried.
  2. A method according to claim 1, characterised in that the hards are ground to form a fibrous ground material optionally with other cellulosic and/or lignocellulosic agricultural coproducts.
  3. A method according to claim 1 or 2, wherein the hards are flax hards.
  4. A method according to claim 2, wherein the cellulosic coproducts are beetroot pulps.
  5. A method according to one of the claims 1 to 4, wherein the fibrous ground material is brewed in aqueous medium.
  6. A method according to one of the claims 1 to 5, wherein the brewing process is a cold process.
  7. A method according to any of the claims 1 to 6, wherein the brewing process is realised manually.
  8. A method according to any of the claims 1 to 6, wherein the brewing process is realised mechanically.
  9. A method according to claim 1, wherein the fibres are moulded in a hot process.
  10. A method according to any of the claims 1 or 9, wherein the fibres are pressed after moulding.
  11. A product obtained according to any of the claims 1 to 10.
  12. A use of the product obtained according to the method of any of the claims 1 to 9 in thermal and/or sound insulation.
  13. A use of the product obtained according to the method of any of the claims 1 to 9 in packaging.
  14. A use of the product obtained according to the method of any of the claims I to 9 in horticulture.
EP05370007A 2004-04-21 2005-04-20 Method for producing plant felt from tow Not-in-force EP1588815B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05370007T PL1588815T3 (en) 2004-04-21 2005-04-20 Method for producing plant felt from tow

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0404215A FR2869254B1 (en) 2004-04-21 2004-04-21 PROCESS FOR PRODUCING VEGETABLE FELT FROM TOWEL
FR0404215 2004-04-21

Publications (2)

Publication Number Publication Date
EP1588815A1 EP1588815A1 (en) 2005-10-26
EP1588815B1 true EP1588815B1 (en) 2010-09-08

Family

ID=34942758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05370007A Not-in-force EP1588815B1 (en) 2004-04-21 2005-04-20 Method for producing plant felt from tow

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Country Link
EP (1) EP1588815B1 (en)
AT (1) ATE480376T1 (en)
DE (1) DE602005023372D1 (en)
FR (1) FR2869254B1 (en)
PL (1) PL1588815T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2942234B1 (en) * 2009-02-17 2012-03-09 Univ Picardie PROCESS FOR OBTAINING AGRO MATERIAL, IN PARTICULAR AGRO BINDER OR AGRO COMPOSITE, AND AGRO MATERIAL OBTAINED BY SUCH A METHOD
FR2953531B1 (en) * 2009-12-07 2012-03-02 Ahlstroem Oy NON-WOVEN SUPPORT FOR JOINT STRIP AND STABLE, DIMENSIONALLY STABLE SEALING STRIP WITHOUT LOSS OF MECHANICAL STRENGTH COMPRISING SAID SUPPORT
FR2967689B1 (en) * 2010-11-23 2012-11-23 Toulouse Inst Nat Polytech METHOD FOR MANUFACTURING SOLID MATERIAL FROM OLEAGINOUS PLANT AND SOLID MATERIAL OBTAINED

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2686461A (en) * 1948-09-23 1954-08-17 Wood Conversion Co Method of manufacturing acoustic fiberboard by perforating wet fiber mat
NL7213855A (en) * 1972-10-13 1974-04-16
DK162535C (en) * 1989-11-30 1992-03-30 Dansk Hoerindustri As HEAR FIBER FELT PLATE
DE4242539C2 (en) * 1992-12-16 2002-06-06 Thueringisches Inst Textil Process for solidifying textile products made from natural fibers
DE4242538C2 (en) 1992-12-16 2002-06-13 Thueringisches Inst Textil Process for solidifying textile products made from natural fibers
DE9217604U1 (en) * 1992-12-23 1994-05-19 Steiner Benno Insulation element made of flax fibers for thermal insulation
FR2705369B1 (en) * 1993-05-13 1995-08-11 Robaeys Freres Sa Van Linen fiber nonwoven and method of making the same
DE19541626A1 (en) * 1994-11-12 1996-06-05 Johannes Buschner Thermal and acoustic insulation based on pure plant product
DE19640622C2 (en) * 1996-10-01 1998-11-12 Moeller Plast Gmbh Building material and method and device for producing a building material
US6872674B2 (en) * 2001-09-21 2005-03-29 Eastman Chemical Company Composite structures

Also Published As

Publication number Publication date
FR2869254B1 (en) 2007-01-26
DE602005023372D1 (en) 2010-10-21
PL1588815T3 (en) 2011-07-29
ATE480376T1 (en) 2010-09-15
FR2869254A1 (en) 2005-10-28
EP1588815A1 (en) 2005-10-26

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