FR2468676A1 - Felted sheet for thermo-forming made using liq. binder resins - to save energy compared with blending and fusing of powdered resins with loose fibres - Google Patents

Felted sheet for thermo-forming made using liq. binder resins - to save energy compared with blending and fusing of powdered resins with loose fibres Download PDF

Info

Publication number
FR2468676A1
FR2468676A1 FR7927170A FR7927170A FR2468676A1 FR 2468676 A1 FR2468676 A1 FR 2468676A1 FR 7927170 A FR7927170 A FR 7927170A FR 7927170 A FR7927170 A FR 7927170A FR 2468676 A1 FR2468676 A1 FR 2468676A1
Authority
FR
France
Prior art keywords
sheet
binder
layer
resin
fibers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7927170A
Other languages
French (fr)
Other versions
FR2468676B3 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR7927170A priority Critical patent/FR2468676A1/en
Publication of FR2468676A1 publication Critical patent/FR2468676A1/en
Application granted granted Critical
Publication of FR2468676B3 publication Critical patent/FR2468676B3/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • 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
    • D04H1/44—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
    • D04H1/498—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 entanglement of layered webs
    • 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
    • D04H1/655—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 characterised by the apparatus for applying 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
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/90—Passive houses; Double facade technology

Landscapes

  • 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)

Abstract

Felted sheet is made by damping a continuous bed of loose fibres with liq. resin which is subsequently polymerised to bind the fibres together. Process is used for mfg. fibrous sheet for lining and insulating vehicle bodies etc. as thermoformed mouldings. Less energy is required to mix and cure the fibre and resin system c.f. similar processes involving dry powder binder resins. The required thickness may be developed by repeated carding, resin spraying and pricking treatments. The impregnated sheet is supported by carrier papers may be surface coated before being dried and wound up. Pref. the resin is a low viscosity blend with suitable hardeners for curing at 120-130 deg. C, is applied from static or oscillating sprays.

Description

La présente invention a trait à la fabrication d'articles d'isola tion et de rembourrage utilisés notamment dans l'industrie de l'automobile, du bâtiment ou du meuble et qui se présentent sous la forme de feutres obtenus par agglomération de fibres textiles à l'aide de liants synthétiques. The present invention relates to the manufacture of insulation and padding articles used in particular in the automobile, building or furniture industry and which are in the form of felts obtained by agglomeration of textile fibers. using synthetic binders.

Le processus normalement employé pour la fabrication d'articles de ce genre consiste à réaliser en premier lieu une couche de fibres d'origine naturelle ou synthétique et à faire ensuite passer ladite couche au-dessous d'un dispositif doseur propre à déposer sur sa face supérieure une quantité appropriée d'une résine artificielle en poudre ; le complexe ainsi obtenu est alors introduit dans une enceinte équipée de tambours perforés, l'espace intérieur de ceux-ci étant relié à une source de dépression de manière à ce que les fibres, mélangées à la poudre de résine artificielle, se collent contre leur paroi ajourée.La nappe qui recouvre les tambours précités est compactée avaat d'être traitée dans un tunnel chauffé qui assure la polymé- risation de la résine en poudre, et elle est enfin refroidie pour être découpée ou enroulée. The process normally used for the manufacture of articles of this kind consists in first of all making a layer of fibers of natural or synthetic origin and then passing said layer below a clean metering device to be deposited on its face. more than an appropriate amount of an artificial powdered resin; the complex thus obtained is then introduced into an enclosure equipped with perforated drums, the internal space of these being connected to a source of vacuum so that the fibers, mixed with the artificial resin powder, stick against their perforated wall. The sheet covering the aforementioned drums is compacted before being treated in a heated tunnel which ensures the polymerization of the powdered resin, and it is finally cooled to be cut or rolled up.

On conçoit que dans un tel procédé le mélange de la poudre de résine s':ntnétique et des fibres s'effectue dans des conditions assez erratiques, si bien que pour pallier à tout risque de désaggrégation intempestive du feutre obtenu il est en pratique nécessaire d'incorporer à la couche une quantité de résine légèrement supérieure à ce qui serait normalement nécessaire, ce qui augmente évidemment les coûts de fabrication.Par ailleurs le manque d'homogénéité du mélange fibres/résine en poudre gêne de manière considérable l'obtention de produits feutrés à caractéristiques bien défi nies
On notera par ailleurs que la polymérisation du complexe implique des températures de traitement relativement élevées, de l'ordre de 200 à 2200C, qui entraînent une consommation énergétique importante Sur le plan de la pollution il y a lieu de remarquer que le cheminement du complexe fibres poudre pose des problèmes quant à la protection du personnel de fabricatison
La présente invention vise à remédier aux inconvénients sus-mention- nés.It is understood that in such a process, the mixing of the resin powder and the fibers is carried out under fairly erratic conditions, so that in order to offset any risk of untimely disintegration of the felt obtained it is in practice necessary to '' incorporate a slightly higher amount of resin into the layer than would normally be required, which obviously increases the manufacturing costs.Moreover, the lack of homogeneity of the fiber / resin powder mixture considerably hinders the production of products felted with well defined characteristics
It will also be noted that the polymerization of the complex involves relatively high treatment temperatures, of the order of 200 to 2200C, which cause significant energy consumption. In terms of pollution, it should be noted that the path of the fiber complex powder poses problems for the protection of manufacturing personnel
The present invention aims to remedy the above-mentioned drawbacks.

Conformément à lginvention la résine synthétique ou autre liant d7ag- Glomeration est pulvérise sous forme liquide lors de la formation de la couche de fibres,
D'autres caractéristiques remarquables du procédé de fabrication sui vant l'invention et de llinstallation pour la mise en oeuvre de celui ci ressortiront de le description qui va suivre en référence au dessin annexé, lequel dessin, donné à titre d'exemple, permettra de mieux comprendre l'invention, les caractéristiques qu'elle présente et les avantages qu'elle est susceptible de procurer
La figure unique de ce dessin est un schéma illustrant l1agen- cement d'une installation de fabrication suivant l'invention.In accordance with the invention the synthetic resin or other d7ag-Glomeration binder is sprayed in liquid form during the formation of the fiber layer,
Other remarkable characteristics of the manufacturing process according to the invention and of the installation for implementing it will emerge from the description which follows with reference to the appended drawing, which drawing, given by way of example, will make it possible to better understand the invention, the characteristics it presents and the advantages it is likely to provide
The single figure of this drawing is a diagram illustrating the layout of a manufacturing installation according to the invention.

La matière première, constituée par des fibres, bourres, voiles de carde ou autres déchets textiles de longueur plus ou moins importante, est introduite par un conduit I à l'intérieur d'un chargeur automatique 2, pourvu a la manière usuelle d'un rouleau égalisateur 3 et d'un rouleau 4 qui permet le réglage de l'épaisseur de la couche finalement formée sur un tapis transporteur oblique 5. Cette couche est recueillie sur un tapis horizontal 6 qui l'amène à passer entre les cylindres superposés d'une ouvreuse ou "garnette" 7 ; à sa sortie de cette dernière la couche est envoyée au bras baladeur à mouvement pendulaire d'une nappeuse classique 8. The raw material, consisting of fibers, fillers, card webs or other textile waste of varying length, is introduced through a conduit I inside an automatic charger 2, provided in the usual manner with a leveling roller 3 and a roller 4 which allows the thickness of the layer finally formed to be adjusted on an oblique conveyor belt 5. This layer is collected on a horizontal belt 6 which causes it to pass between the superimposed cylinders of an opener or "pad" 7; at its exit from the latter, the layer is sent to the pendulum movement arm of a conventional napper 8.

La nappe formée par le bras baladeur est supportée par un tapis horizontal 9 et c'est au niveau de ce tapis que ladite nappe reçoit une pulvérisation de résine liquide. On notera que la buse ou rampe de pulvérisation est susceptible soit d'être montée à poste fixe au-dessus du tapis 9, comme on l'a supposé au dessin où la reférence 10 désigne ladite buse ou rampe, soit d'être portée par l'extrémité inférieure du bras baladeur de la nappeuse 8. En tout état de cause on conçoit que la résine enrobe efficacement les fibres au fur et à mesure que la nappe se forme, de telle sorte que le mélange est parfaitement homogène. The sheet formed by the wandering arm is supported by a horizontal mat 9 and it is at this mat that said sheet receives a spray of liquid resin. It will be noted that the spray nozzle or boom is capable of either being mounted at a fixed station above the conveyor 9, as was assumed in the drawing where the reference 10 designates said nozzle or boom, or of being carried by the lower end of the sliding arm of the coating machine 8. In any event, it can be seen that the resin effectively coats the fibers as and when the sheet is formed, so that the mixture is perfectly homogeneous.

A sa sortie du transporteur 9 la nappe enduite de résine est prise en charge par un support (tissu, bande de papier ou de carton, non tissé, métal en feuille, matière synthétique, etc...) déroulé à partir d'une réserve il ; il va de soi que lorsqu'on ne désire pas qu'un tel support soit incorporé à llarticle obtenu lui-meme, on peut avoir recours à une surface fixe, prévue pleine ou ajourée. La nappe subit soit un léger aiguilletage au poste 12 en vue d'améliorer sa tenue, soit une compression par passage entre des rouleaux presseurs. On leaving the conveyor 9 the resin-coated sheet is taken up by a support (fabric, strip of paper or cardboard, non-woven, sheet metal, synthetic material, etc.) unwound from a reserve he ; It goes without saying that when one does not wish such a support to be incorporated into the article obtained itself, one can have recourse to a fixed surface, provided full or perforated. The ply undergoes either a slight needling at station 12 in order to improve its resistance, or compression by passage between pressing rollers.

Dans l'exemple de realisation considéré au dessin, on a supposé que la nappe enduite et aiguilletée traversait une seconde nappeuse 8' disposée au-dessus d'un autre tapis 9' et associée a une autre buse ou rampe de pulvérisation 10'. En fait le nombre de nappeuses dépend en pratique de la cadence désirée pour le processus de fabrication en continu, et du poids que doivent présenter les articles à réaliser. In the embodiment considered in the drawing, it has been assumed that the coated and needled sheet passes through a second tablecloth 8 'placed above another carpet 9' and associated with another nozzle or sprayer boom 10 '. In fact the number of coating machines depends in practice on the desired rate for the continuous manufacturing process, and on the weight which the articles to be produced must have.

La seconde couche est assemblée à la première éventuellement à l'aide dtune aiguilleteuse 12' identique à celle mentionnée ci-dessus, étant noté que préalablement à cette opération l'on peut recouvrir d'un support dé roulé a partir d dtune réserve supérieure 13, la nappe finale de fibres im- prégnées, nappe qui est alors maintenue entre deux feuilles superposées, ainsi qu'on lva supposé au dessin. The second layer is assembled to the first optionally using a needling machine 12 ′ identical to that mentioned above, it being noted that prior to this operation, it is possible to cover with a rolled support from an upper reserve 13 , the final layer of impregnated fibers, a layer which is then held between two superimposed sheets, as is assumed in the drawing.

A sa sortie du poste 12' la nappe enduite traverse successivement deux unités 14 et 15 destinées, au moins dans le cas où ladite nappe n'est pas revêtue sur ses deux faces, à effectuer des traitements de surface par pulvérisation ou par enduction-trempage Puis le produit ainsi traité est admis à l'intérieur d'un four 16, équipé d'un tambour perforé 17 convenablement entraîné en rotation ; un ou plusieurs ventilateurs 18, associés à des batteries de chauffe, établissent un courant d'air chaud pulsé à travers l'enceinte du four 16. Enfin la nappe quitte ce four 18 à l'état polymérisé pour gagner une enrouleuse 19, éventuellement précedée d'une machine de découpage 20. On leaving the station 12 ′ the coated sheet passes successively through two units 14 and 15 intended, at least in the case where said sheet is not coated on its two faces, to carry out surface treatments by spraying or by coating-soaking Then the product thus treated is admitted inside an oven 16, equipped with a perforated drum 17 suitably driven in rotation; one or more fans 18, associated with heating batteries, establish a current of hot air pulsed through the enclosure of the oven 16. Finally the sheet leaves this oven 18 in the polymerized state to gain a winder 19, possibly preceded a cutting machine 20.

La résine pulvérisée par la ou les rampes 10 sera le plus souvent à base d'uréthane, à l'état mélangé avec un durcisseur, les proportions pou- vant varier en fonction des applications prévues pour le produit à réaliser. La viscosité présentée par une telle résine est faible, ce qui permet d'obtenir une pulvérisation fine sans qu'il soit nécessaire d'avoir recours à des diluants et à une circulation d'air pour l'élimination de ces derniers. les pertes de résine sont pratiquement nulles et les conditions de travail sont sensiblement améliorées. The resin sprayed by the ramp (s) 10 will most often be based on urethane, in the state mixed with a hardener, the proportions being able to vary according to the applications envisaged for the product to be produced. The viscosity presented by such a resin is low, which makes it possible to obtain a fine spraying without the need to have recourse to diluents and to an air circulation for the elimination of the latter. the resin losses are practically zero and the working conditions are appreciably improved.

On remarquera par ailleurs que la polymérisation consiste en une réaction exothermique, Si bien qu'il suffit en fait d'amorcer cette réaction dont le processus complet se déroule ensuite sous l'effet de la chaleur dégagée. L'économie d'énergie est importante au niveau du four 16, la fin de la polymérisation pouvant au surplus s'effectuer à l'air ambiant. It will also be noted that the polymerization consists of an exothermic reaction, so that it is sufficient in fact to initiate this reaction whose complete process then takes place under the effect of the heat given off. The energy saving is significant at the level of the oven 16, the end of the polymerization being able, moreover, to take place in ambient air.

Moyennant un choix judicieux des constituants de la résine pulvérisée, des proportions de ceux-ci et des conditions de traitement en ce qui concerne notamment la température et la durée, l'on peut obtenir à la sortie du four 16 des produits susceptibles d'un thermoformage. La mise en forme s'effectuera à des températures relativement basses (de l'ordre de 120 à 1300C au lieu de 180 à 2O00C avec les produits actuels) et dans des temps bien inférieurs. By means of a judicious choice of the constituents of the pulverized resin, of the proportions thereof and of the treatment conditions with regard in particular to the temperature and the duration, it is possible to obtain, at the outlet of the oven 16, products capable of thermoforming. The shaping will be carried out at relatively low temperatures (of the order of 120 to 1300C instead of 180 to 2O00C with current products) and in much lower times.

L'invention permet l'emploi de déchets textiles de tous ordres et de toutes natures. On notera en particulier quton peut choisir des déchets d'origine synthétique, propres à se combiner avec la résine d'agglomération pour former des nappes enduites présentant des qualités bien précises. Il convient en outre de souligner que le dosage exact de la résine par rapport au poids au mètre-carré de la nappe à enduire permet d'obtenir des produits très réguliers quant à leur poids, leur épaisseur, leur résistance à la traction et à la compression, etc... The invention allows the use of textile waste of all kinds and of all kinds. It will be noted in particular that one can choose waste of synthetic origin, suitable for combining with the agglomeration resin to form coated sheets having very specific qualities. It should also be emphasized that the exact dosage of the resin in relation to the weight per square meter of the sheet to be coated makes it possible to obtain very regular products as regards their weight, their thickness, their tensile and tensile strength. compression, etc ...

Il va de soi que le procédé suivant l'invention autorise la fabrication de produits à caractéristiques auto-extinguibles propres à être utilisés dans l'industrie de l'automobile ou à être classés NI pour l'industrie du bâtiment où les propriétés d'isolation phonique et thermique du matériau obtenu sont particulièrement importantes. De la mime manière on peut adjoindre aux fibres de la nappe des charges appropriées, notamment en vue de diminuer ou au contraire d'accroître la densité des produits finis. It goes without saying that the process according to the invention allows the manufacture of products with self-extinguishing characteristics suitable for use in the automobile industry or to be classified NI for the building industry where the insulation properties phonic and thermal of the material obtained are particularly important. In the same way, it is possible to add appropriate fillers to the fibers of the sheet, in particular with a view to decreasing or on the contrary increasing the density of the finished products.

Il doit d'ailleurs être entendu que la description qui précède n'a été donnée qu a titre d'exemple et qu'elle ne limite nullement le domaine de l'invention dont on ne sortirait pas en remplaçant les détails d'éxécution décrits par tous autres équivalents. C'est ainsi notamment que la pulvérisation de résine liquide est susceptible d'être opérée sur des fibres ou déchets en suspension dans l'air, en particulier au niveau des tambours à pointes de nappeuses du type FERRER qui dans l'installation sont en mesure de remplacer le ou les nappeuses à bras baladeurs 8 et 8'. It should moreover be understood that the above description has been given only by way of example and that it in no way limits the field of the invention from which one would not depart by replacing the details of execution described by all other equivalents. Thus, in particular, the spraying of liquid resin is capable of being carried out on fibers or waste suspended in the air, in particular at the level of drums with pointers of FERRER type coating machines which in the installation are able replace the coating machine (s) 8 and 8 '.

Claims (7)

REVENDICATIONS 1. Procédé pour la fabrication de feutres d'isolation et de rembourrage par agglomération de fibres textiles à l'aide de liants synthétiques, du genre consistant à former tout d'abord une couche ou nappe de fibres, à ajouter le liant et à polymériser le complexe ainsi obtenu, carac térisé en ce que le liant est pulvérisé sous forme liquide lors de la formation de la couche ou nappe  1. Process for the manufacture of insulation and padding felts by agglomeration of textile fibers using synthetic binders, of the type consisting in first forming a layer or sheet of fibers, adding the binder and polymerizing the complex thus obtained, charac terized in that the binder is sprayed in liquid form during the formation of the layer or sheet 2 Installation pour la mise en oeuvre du procédé suivant la revendication 1, du genre comprenant au moins une nappeuse pour la formation de la couche de fibres, des moyens pour l'adjonction du liant à ladite couche et un four de polymérisation, caractérisée en ce que les moyens pour l'ad- jonction du liant à la couche sont constitues par au moins une buse ou rampe de pulvérisation disposée à la sortie de la nappeuse. 2 Installation for implementing the method according to claim 1, of the type comprising at least one coating machine for forming the layer of fibers, means for adding the binder to said layer and a polymerization oven, characterized in that that the means for adding the binder to the layer are constituted by at least one spray nozzle or spray bar disposed at the outlet of the coating machine. 3. Installation suivant la revendication 2, caractérisée en ce que la buse ou rampe est montée à poste fixe au-dessus du tapis transporteur de sortie de la nappeuse. 3. Installation according to claim 2, characterized in that the nozzle or ramp is mounted in a stationary position above the conveyor belt output from the coating machine. 4. Installation suivant la revendication 2, caractérisée en ce que la buse ou rampe est portée par le bras baladeur à mouvement pendulaire de la nappeuse 4. Installation according to claim 2, characterized in that the nozzle or ramp is carried by the wandering arm with pendulum movement of the coating machine 5 Installation suivant l'une quelconque des revendications 2 à 4, caractérisée en ce qu'à la sortie de la nappeuse la nappe de fibres enduite de liant est soumise à un aiguilletage  5 Installation according to any one of claims 2 to 4, characterized in that at the exit of the tablecloth the sheet of fibers coated with binder is subjected to needling 6 Installation suivant l'une quelconque des revendications 2 à 5, caracerisée en ce quelle comprend au moins un poste pour le traitement superficiel de la nappe enduite, ce traitement étant opéré par pulvérisation et/ou par enduction-trempage 6 Installation according to any one of claims 2 to 5, characterized in that it comprises at least one station for the surface treatment of the coated web, this treatment being carried out by spraying and / or by coating-soaking 7 Installation suivant l'une quelconque des revendications 2 à 6, earacrceri9ee en ce que le four de polymérisation renferme un tambour tournant à paroi ajourée, ainsi que des moyens pour créer un courant d'air chaud pulsé 7 Installation according to any one of claims 2 to 6, earacrceri9ee in that the polymerization oven contains a rotary drum with perforated wall, as well as means for creating a current of pulsed hot air
FR7927170A 1979-10-29 1979-10-29 Felted sheet for thermo-forming made using liq. binder resins - to save energy compared with blending and fusing of powdered resins with loose fibres Granted FR2468676A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7927170A FR2468676A1 (en) 1979-10-29 1979-10-29 Felted sheet for thermo-forming made using liq. binder resins - to save energy compared with blending and fusing of powdered resins with loose fibres

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7927170A FR2468676A1 (en) 1979-10-29 1979-10-29 Felted sheet for thermo-forming made using liq. binder resins - to save energy compared with blending and fusing of powdered resins with loose fibres

Publications (2)

Publication Number Publication Date
FR2468676A1 true FR2468676A1 (en) 1981-05-08
FR2468676B3 FR2468676B3 (en) 1982-08-13

Family

ID=9231278

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7927170A Granted FR2468676A1 (en) 1979-10-29 1979-10-29 Felted sheet for thermo-forming made using liq. binder resins - to save energy compared with blending and fusing of powdered resins with loose fibres

Country Status (1)

Country Link
FR (1) FR2468676A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534941A1 (en) * 1982-10-21 1984-04-27 Gall Jean Yves K METHOD AND INSTALLATION FOR FORMING A WATERPROOF LAYER ON A FLEXIBLE FLOOR
FR2777576A1 (en) * 1998-04-16 1999-10-22 Laroche Sa Production of padding or sound- and thermal insulation from natural or recycled materials

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534941A1 (en) * 1982-10-21 1984-04-27 Gall Jean Yves K METHOD AND INSTALLATION FOR FORMING A WATERPROOF LAYER ON A FLEXIBLE FLOOR
EP0109872A1 (en) * 1982-10-21 1984-05-30 Jean-Yves Kergall Method and apparatus for water-proofing supple sheet-like materials
FR2777576A1 (en) * 1998-04-16 1999-10-22 Laroche Sa Production of padding or sound- and thermal insulation from natural or recycled materials
EP1050613A1 (en) * 1998-04-16 2000-11-08 Laroche Sa Process and device for making nonwoven articles from recycled or not recycled fibers, and articles made thereof

Also Published As

Publication number Publication date
FR2468676B3 (en) 1982-08-13

Similar Documents

Publication Publication Date Title
WO2018115736A1 (en) Process for manufacturing a fibrous material preimpregnated with thermoplastic polymer in a fluidized bed
AU2008270155B2 (en) Method for making a textile coating and textile coating
EP3558613A1 (en) Process for manufacturing a fibrous material preimpregnated with thermoplastic polymer in dry powder form
WO2018115737A1 (en) Method for manufacturing a fibrous material pre-impregnated with thermoplastic polymer in powder form
WO2018234439A1 (en) Method for manufacturing a fibrous material impregnated with thermoplastic polymer
CN101166621A (en) Polymer/WUCS mat for use in sheet molding compounds
EP3558614A1 (en) Method for manufacturing a fibrous material pre-impregnated with thermoplastic polymer by spraying
FR2561577A1 (en) FIBROUS MOLDABLE MATTRESS AND METHOD FOR MANUFACTURING THE SAME
BE897525A (en) METHOD AND DEVICE FOR FORMING NON-WOVEN TABLECLOTHS
EP0371847B1 (en) Composite material based on mineral fibres, apparatus for making it and use of the composite material
FR2531662A1 (en) CONSTRUCTION PLATE, DEVICE AND METHOD FOR FORMING SAME
FR2468676A1 (en) Felted sheet for thermo-forming made using liq. binder resins - to save energy compared with blending and fusing of powdered resins with loose fibres
FR2898900A1 (en) Composition useful for the manufacture of lubricant mineral fibers comprises water and dry extract of coupling agent and polyvinylpyrrolidone
EP3670127A1 (en) Method for producing a fibrous material impregnated with thermoplastic polymer
FR2759384A1 (en) PROCESS FOR RECYCLING TEXTILE FLOOR OR WALL COVERINGS AND FIBROUS TABLECLOTHS OBTAINED BY THE IMPLEMENTATION OF THIS PROCESS
EP1629968B1 (en) Recyclable floor covering for fairs and exhibitions
CA1055751A (en) Continuous shrinking process for wet processed non woven fabrics
JPH10510890A (en) Rotating fiber asphalt
FR2720466A1 (en) Process for the production of an impregnated flat lining.
EP0403347A1 (en) Mineral fibre composite useful for the manufacture of moulding articles
FR2529878A1 (en) Improvements to the techniques for forming fibres comprising centrifuging.
FR2537052A1 (en) Single-layer needle loom mat
FR2461051A1 (en) Felt prodn. from proteinaceous fibres - by heating and felting under conditions of minimal drying
FR3053627A1 (en) COMPOSITE SHEET BASED ON FABRIC AND POLYETHERIMIDE WITH CONTROLLED POROSITY
BE819987A (en) Fibre reinforced plastic sheet prodn with high filler contents - by adding random fibres to prefilled viscous matrix on conveyor film

Legal Events

Date Code Title Description
ST Notification of lapse