EP1007775A1 - Composite mousse-fibres longues - Google Patents

Composite mousse-fibres longues

Info

Publication number
EP1007775A1
EP1007775A1 EP98941244A EP98941244A EP1007775A1 EP 1007775 A1 EP1007775 A1 EP 1007775A1 EP 98941244 A EP98941244 A EP 98941244A EP 98941244 A EP98941244 A EP 98941244A EP 1007775 A1 EP1007775 A1 EP 1007775A1
Authority
EP
European Patent Office
Prior art keywords
long
fibers
composite according
foam composite
foamed
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
EP98941244A
Other languages
German (de)
English (en)
Other versions
EP1007775B1 (fr
Inventor
Rolf Hesch
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.)
Moeller Plast GmbH
Original Assignee
Moeller Plast GmbH
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 Moeller Plast GmbH filed Critical Moeller Plast GmbH
Publication of EP1007775A1 publication Critical patent/EP1007775A1/fr
Application granted granted Critical
Publication of EP1007775B1 publication Critical patent/EP1007775B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D04H1/68—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 the bonding agent being applied in the form of foam

Definitions

  • the invention relates to a long fiber foam composite and components made therefrom.
  • nonwovens, mats and similar scrims made of fibers and other longitudinally oriented structures with a high degree of slenderness are tied in such a way that they
  • - are mechanically solidified, e.g. B. by needling, quilting, matting,
  • thermobonding if as fibers u. completely or partially thermoplastic material is used,
  • thermal bonding with single or bi-component fibers requires a polymer content of between 15% and 50%. This allows proven products to be manufactured in many cases. But every synthesis is associated with high energy consumption and thus high emissions. In addition, the cost of chemical or synthetic fibers is high.
  • the invention has for its object to provide a long fiber foam composite, in which the long fibers are connected to a loose but dimensionally stable fabric with good recovery properties.
  • this object is achieved in that the long fibers are only partially connected by a foam body to form a low-density scrim.
  • the foam bodies connecting in the form of a node in foamed or non-foamed form into the scrim during the formation of the scrim, the foam bodies introduced in non-foamed form being able to be foamed into the binder to be foamed by reaction or by activation of previously introduced blowing agents.
  • foam-free zones spanned only by fibers are formed between the foam bodies. Natural fibers, man-made fibers, system fibers, inorganic fibers as primary fibers as well as recycling fibers or mixtures thereof can be used as fibers.
  • the only partial use of the elastomer results in a significantly more economical consumption.
  • the economical consumption is further increased by the foaming.
  • the foaming also results in better upholstery behavior and better dimensional stability or recovery after loading.
  • the fiber structure can also be made looser, which also results in a saving in fibers.
  • the natural fibers can be connected to one another in a punctiform manner with a binder expenditure minimized by foaming.
  • the foam bodies support the fibers from the inside and ensure that they cannot collapse over time.
  • the foamable materials are only foamed after being introduced between the fibers, they drive the fibers apart and bring about a reduction in the density of the scrims, which would not be possible without the method according to the invention. Since it is known that the lower the density, the better the insulation, the method according to the invention, in addition to the desired dimensional stability, also results in an increase in the insulation capacity beyond the natural level.
  • Wind barriers or layers which are intended to prevent convection of the air within the fibers can be applied on one or both sides by the method according to the invention. Thin foam layers or fine nonwovens applied on one or both sides can also be used as wind barriers.
  • the invention makes it possible to achieve shape stabilization with light to very light nonwovens with the least effort and to increase the rear forces.
  • the long fibers glued in a knot-like manner in the foam body ensure that the foam is braced laterally, so that there are no undesirable lateral evasive and rocking movements typical of foam padding.
  • Polymers, elastomers and also thermosets in the state of the pre-condensate or pre-adduct are suitable for the production of the aforementioned Part i a 1 foam composites.
  • the introduction in the already foamed form should preferably be used when a bond to the nonwoven or other non-woven fabric is to take place without additional reduction in the density of the non-woven fabric.
  • the introduction of reactive foamable systems or subsequently foamable systems, e.g. B. by subsequent introduction of energy, should preferably be used when the foaming is to take place freely and serve to further reduce the density of the fleece or other gel filling by increasing the foam than is possible by the fleece molding itself .
  • foaming in a limited th volume e.g. B. in a double 1 belt press or in a form, for. B. for car seats.
  • the internal pressure generated by the foaming pressure presses the long fiber Part i al foam system against the walls of the mold and thus causes the formation of molded parts, for. B. upholstery for car seats.
  • inlaid cover layers for decorative or other purposes can be foamed immediately.
  • An increase in the strength of long fiber parts i a 1 - foam-bonded can be achieved according to the invention by already foaming the foam bodies or introducing them subsequently into a mixture of natural fibers and polymer fibers in the manner described.
  • thermobonding can then result in a strength-increasing fusion of the polymer fibers at their crossing points.
  • Material exist can be coupled to sheets, foils, fabrics and comparable flat materials, possibly with priming of the flat materials. In this way, it becomes possible to produce lightweight components of high strength, e.g. B. car doors, car interior panels, sandwich elements of all kinds u. a. m.
  • the scrim is provided on one or both sides with an adhesive or a cover layer made of foam, which has an adhesive effect and is able to cover the scrim with f sheet-like structures, e.g. B. sheets, decorative fabrics and. a. m. to glue or thermally weld.
  • f sheet-like structures e.g. B. sheets, decorative fabrics and. a. m. to glue or thermally weld.
  • Nonwovens manufactured according to the above systems u. ⁇ . Can be deep drawn and subsequently pressed for if they are thermoplastic components and / or thermosets
  • the form of the nonwovens can be compressed to different heights in zones.
  • edge zone z. B. highly compressed to high strength and rigidity
  • z. B. for self-supporting parts, to achieve and only slightly compressed in the middle to, among other things, upholstery cause.
  • Using this process it is also possible to press ribs or embossings for reinforcement purposes or decorative purposes into the molded part with a selectable depth and density.
  • the method is particularly suitable for producing stiff, dimensionally stable, yet light interior parts for vehicles that do not splinter in the event of a crash.

Landscapes

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

Abstract

L'invention concerne un composite mousse-fibres longues, dans lequel les fibres longues sont assemblées pour former une structure souple mais résistant à la déformation, présentant de bonnes propriétés de rappel. Les fibres longues sont assemblées uniquement en partie, sous forme de noeuds, par des particules de mousse incorporées dans la structure, sous forme expansée ou non, lors de la formation de ladite structure. Les particules de mousse incorporées sous forme non expansée peuvent être expansées par réaction ou par réactivation d'agents d'expansion incorporés auparavant dans le liant devant être expansé. L'expansion peut s'effectuer soit sans limitation de volume de sorte qu'une densité minimale puisse être obtenue par expansion totale, soit dans un volume prédéterminé, avec la densité ainsi prédéterminée, par exemple par expansion dans une presse à double paroi ou dans un moule.
EP98941244A 1997-08-26 1998-06-29 Composite mousse-fibres longues Expired - Lifetime EP1007775B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19737014A DE19737014A1 (de) 1997-08-26 1997-08-26 Langfaser-Schaumverbund
DE19737014 1997-08-26
PCT/DE1998/001777 WO1999010581A1 (fr) 1997-08-26 1998-06-29 Composite mousse-fibres longues

Publications (2)

Publication Number Publication Date
EP1007775A1 true EP1007775A1 (fr) 2000-06-14
EP1007775B1 EP1007775B1 (fr) 2001-11-21

Family

ID=7840139

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98941244A Expired - Lifetime EP1007775B1 (fr) 1997-08-26 1998-06-29 Composite mousse-fibres longues

Country Status (5)

Country Link
EP (1) EP1007775B1 (fr)
AU (1) AU8972098A (fr)
CA (1) CA2302006A1 (fr)
DE (2) DE19737014A1 (fr)
WO (1) WO1999010581A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB993966A (en) * 1960-12-23 1965-06-02 W E Rawson Ltd Method of and apparatus for bonding fibrous material
JPS495743B1 (fr) * 1965-10-21 1974-02-08
DE1685180A1 (de) * 1968-02-03 1971-09-02 Heinrich Haeussling Fa Faservlies
DE1947142A1 (de) * 1968-10-22 1970-06-04 Wissenschaftlich Tech Zentrum Textiles Flaechengebilde und Verfahren zu dessen Herstellung
NL7317678A (nl) * 1973-12-27 1975-07-01 Aku Goodrich Chem Ind Werkwijze voor de vervaardiging van een met m geimpregneerde niet-geweven vlies, als- de aldus verkregen vliezen en de daaruit ardigde voorwerpen.
DE2848258C2 (de) * 1978-11-07 1985-03-07 Engineered Yarns, Inc., Coventry, R.I. Verfahren zum Herstellen eines textilen Flächengebildes
EP0159427B1 (fr) * 1982-10-22 1988-06-29 Chisso Corporation Etoffe non-tissée
EP0117458A3 (fr) * 1983-02-26 1988-01-13 Firma Carl Freudenberg Procédé de fabrication d'étoffes textiles fibreuses volumineuses
JPH0428534A (ja) * 1990-05-25 1992-01-31 Teijin Ltd 繊維強化複合成型物の製造法及びそれに用いる中間素材
FI93091C (fi) * 1991-09-30 1995-02-27 Scanwoven Ab Oy Täytemateriaalimatto sekä menetelmä sen valmistamiseksi
DE59408842D1 (de) * 1993-11-29 1999-11-25 Greiner & Soehne C A Formteil aus Kunststoffschaum sowie Verfahren und Vorrichtung zu dessen Herstellung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9910581A1 *

Also Published As

Publication number Publication date
CA2302006A1 (fr) 1999-03-04
EP1007775B1 (fr) 2001-11-21
DE19737014A1 (de) 1999-03-04
DE59802757D1 (de) 2002-02-21
AU8972098A (en) 1999-03-16
WO1999010581A1 (fr) 1999-03-04

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