WO1986006114A1 - A cushion core, in particular for an aircraft seat, and a process for its manufacture - Google Patents

A cushion core, in particular for an aircraft seat, and a process for its manufacture Download PDF

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Publication number
WO1986006114A1
WO1986006114A1 PCT/DE1986/000152 DE8600152W WO8606114A1 WO 1986006114 A1 WO1986006114 A1 WO 1986006114A1 DE 8600152 W DE8600152 W DE 8600152W WO 8606114 A1 WO8606114 A1 WO 8606114A1
Authority
WO
WIPO (PCT)
Prior art keywords
fibers
mold
upholstery core
upholstery
aircraft seat
Prior art date
Application number
PCT/DE1986/000152
Other languages
German (de)
French (fr)
Inventor
Faruk Baymak
Helmut STÜBEN
Uwe Moog
Original Assignee
Messerschmitt-Bölkow-Blohm 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
Priority claimed from DE19853513414 external-priority patent/DE3513414A1/en
Application filed by Messerschmitt-Bölkow-Blohm Gmbh filed Critical Messerschmitt-Bölkow-Blohm Gmbh
Priority to GB08628788A priority Critical patent/GB2185044B/en
Publication of WO1986006114A1 publication Critical patent/WO1986006114A1/en

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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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B68—SADDLERY; UPHOLSTERY
    • B68G—METHODS, EQUIPMENT, OR MACHINES FOR USE IN UPHOLSTERING; UPHOLSTERY NOT OTHERWISE PROVIDED FOR
    • B68G1/00—Loose filling materials for upholstery
    • 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
    • D04H1/4282—Addition polymers
    • D04H1/43—Acrylonitrile series
    • 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
    • D04H1/4326—Condensation or reaction polymers
    • 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
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/4334—Polyamides
    • 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
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/4334—Polyamides
    • D04H1/4342—Aromatic polyamides

Definitions

  • the invention relates to a cushion core according to the preamble of claim 1 and a method for its production.
  • the upholstery cores of previous aircraft seats generally consist of a suitable polyurethane foam.
  • all of the upholstery materials under consideration in the event of a fire neither develop toxic smoke gases nor contribute to the spread of fire.
  • these are covered with fire-proof covers. In this way, ignition is avoided and the release of poisonous gases from such upholstery in the event of a fire is substantially reduced.
  • the complete covering with refractory covers is technically difficult or impossible in many cases (e.g. in the case of penetrating parts such as support pipes, etc.), so that upholstered foam liquefied by the action of heat can drip off and burn out on the floor. Therefore, in many cases, such fabric coverings cannot offer adequate fire protection.
  • poisonous gases are created, which are also explosive.
  • Silicone foam is also known as the material for producing such upholstery. Although this has the values required for flammability and flue gas development, it is disadvantageous for reasons of weight. Parts consisting of this material can only be formed from one block.
  • the object of the invention is to design a cushion core of low weight using suitable materials in such a way that it has the properties required in terms of flammability and flue gas development, so that special envelopes are not required to achieve these properties and Upholstery core can be molded in one operation.
  • FIG. 2 shows a mold for producing an upholstery core.
  • FIG. 3 shows a section of an upholstery core with knot points and
  • Substitute H'-tt Fig. 4 shows a section of an upholstery core with welds.
  • FIG. 1 shows a head cushion 1 with a cushion core 2, a covering 3 and a fabric cover 4.
  • the cushion 1 is held by a U-shaped support 5 which penetrates the cushion core 2.
  • the core 2 consists of relatively temperature-resistant fibers 6, preferably of synthetic fibers. Such upholstery can be used in the automotive and furniture industries in addition to the aerospace industry.
  • the individual fibers 6 are arranged inside the cushion 2 in preferably irregularly running spatially curved lines, so that these are predominantly subjected to bending when the cushion is loaded. As a result of the elasticity of the fibers 6, the cushion 2 takes on its original shape again and again after relief.
  • plastics is between 1.1 and 1.5 g / cm. This makes it possible to manufacture upholstery cores that are used in one
  • the following materials can be used as basic materials for the production of the fibers 6.
  • PEEK Polyether ether ketone
  • PEI Polyetherimide
  • Figure 2 shows a mold 7 for the manufacture of cushion cores.
  • This shape 7 consists of an upper half 8 and a lower half 9, which touch in the parting plane 10.
  • the shape 7 is partially cut.
  • the cavity shown in dashed lines has the shape of the pad 11 to be produced.
  • the halves 8, 9 have cooling channels 12 for a cooling liquid.
  • Arranged within the mold 7 are two nozzles 13 and 14, each of which has a large number of small bores 17 and are designed to be displaceable in the direction of the arrows 15 and 16.
  • a suitable plastic is extruded through the holes 17 into the cavity of the mold 7.
  • FIG. 3 shows in a section of a cushion core with fibers 6 a further embodiment of the invention.
  • fertilizer This consists in that the fibers 6 are provided with a coating which surrounds them as thin skin and forms nodes 19 at the points of contact of the fibers 6.
  • the coating can be applied by dipping or spraying and generally consists of a suitable resin, for example based on polyimide. It is also conceivable that a silicone elastomer is used as the coating material. This further increases the heat resistance of the fibers 6. It is also conceivable that hollow microspheres containing fire-retardant active substances are mixed into the coating.
  • FIG. 4 shows a further embodiment of a cushion.
  • the fibers 6 are welded together at their contact points.
  • the welds 20 result automatically if the intrinsic temperature of the fibers is sufficient for this after extrusion.
  • One embodiment of the molding process is that the extrusion takes place from above into an open mold and the mold is only closed afterwards.
  • the nozzles perform controlled movements in order to distribute the fibers evenly.
  • a further embodiment of the invention consists in the fibers 6 of the cushion core being made of different materials.
  • the core 2 within the mold 7 is provided with a skin which preferably consists of a silicone material.

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

Abstract

The core consists of relatively temperature-resistant fibers (6), preferably plastic fibers. Such cushions can be used not only in the aviation industry but also in the vehicle and furniture industries.

Description

Polsterkern, insbesondere für einen Flugzeugsitz, und Verfahren zu dessen HerstellungUpholstery core, in particular for an aircraft seat, and method for its production
Die Erfindung bezieht sich auf einen Polsterkern nach dem Oberbegriff des Anspruchs 1 und ein Verfahren zu dessen Herstellung.The invention relates to a cushion core according to the preamble of claim 1 and a method for its production.
Die Polsterkerne bisheriger Flugzeugsitze bestehen in der Regel aus einem geeigneten Polyurethan-Schaum¬ stoff. Um die Gefahren für Passagiere und Besatzung eines Flugzeuges im Brandfall weitgehend zu begrenzen, ist es erforderlich, daß alle in Betracht kommenden Polstermaterialien im Brandfall weder giftige Rauchga- se entwickeln noch zur Ausbreitung des Feuers beitra¬ gen. Um dies bei bisherigen Polsterkernen zu errei¬ chen, werden diese mit feuerfesten Bezügen umhüllt. Hierdurch wird eine Entflammung vermieden und die Abga¬ be giftiger Gase derartiger Polster im Brandfalle we- sentlich vermindert. Die vollständige Umhüllung mit feuerfesten Bezügen ist jedoch in vielen Fällen tech¬ nisch schwierig oder unmöglich (z.B bei durchtretenden Teilen wie Stützrohre usw. ) , so daß durch Hitzeeinwir¬ kung verflüssigter Polsterschaum abtropfen und auf dem Fußboden ausbrennen kann. Daher können derartige Gewe¬ bebezugsstoffe in vielen Fällen keinen ausreichenden Brandschutz bieten. Im Falle des Abbrennens verflüssig¬ ter Schaumstoffe, z.B. auf dem Fußboden, entstehen giftige Gase, die außerdem explosiv sind.The upholstery cores of previous aircraft seats generally consist of a suitable polyurethane foam. In order to largely limit the dangers for passengers and crew of an aircraft in the event of a fire, it is necessary that all of the upholstery materials under consideration in the event of a fire neither develop toxic smoke gases nor contribute to the spread of fire. In order to achieve this with previous upholstery cores chen, these are covered with fire-proof covers. In this way, ignition is avoided and the release of poisonous gases from such upholstery in the event of a fire is substantially reduced. However, the complete covering with refractory covers is technically difficult or impossible in many cases (e.g. in the case of penetrating parts such as support pipes, etc.), so that upholstered foam liquefied by the action of heat can drip off and burn out on the floor. Therefore, in many cases, such fabric coverings cannot offer adequate fire protection. In the case of burning liquefied foams, e.g. On the floor, poisonous gases are created, which are also explosive.
Weiterhin ist die Verwendung von Flammschutzmitteln bekannt, die auf die Polsterkerne aufgebracht oder bei deren Herstellung in den Schaum eingebracht werden. Diese Mittel sollen die Ent lammbarkeit des MaterialsFurthermore, the use of flame retardants is known which is applied to the cushion cores or introduced into the foam during their manufacture. These funds are intended to reduce the inflammability of the material
Ersatzblatt erschweren, haben aber den Nachteil, daß sie sich verflüchtigen und einem Alterungsprozeß unterliegen, so daß sie nur für eine relativ begrenzte Zeitspanne wirksam bleiben. Als Material zur Herstellung derarti- ger Polster ist auch Silicon-Schaum bekannt. Dieser weist zwar die hinsichlich Entflammbarkeit und Rauch¬ gasentwicklung geforderten Werte auf, ist aber aus Gewichtsgründen von Nachteil. Aus diesem Material be¬ stehende Teile können nur aus einem Block geformt werden.Spare sheet complicate, but have the disadvantage that they evaporate and undergo an aging process, so that they remain effective only for a relatively limited period of time. Silicone foam is also known as the material for producing such upholstery. Although this has the values required for flammability and flue gas development, it is disadvantageous for reasons of weight. Parts consisting of this material can only be formed from one block.
Demgemäß liegt der Erfindung die Aufgabe zugrunde, einen Polsterkern von niedrigem Gewicht unter Verwen¬ dung geeigneter Materialien derart auszubilden, daß dieser an sich die hinsichtlich Entflammbarkeit und Rauchgasentwicklung geforderten Eigenschaften auf¬ weist, so daß besondere Umhüllungen zur Erreichung dieser Eigenschaften nicht erforderlich sind und der Polsterkern in einem Arbeitsgang geformt werden kann.Accordingly, the object of the invention is to design a cushion core of low weight using suitable materials in such a way that it has the properties required in terms of flammability and flue gas development, so that special envelopes are not required to achieve these properties and Upholstery core can be molded in one operation.
Diese Aufgabe wird bei einem gattungsgemäßen Polster¬ kern durch die kennzeichnenden Merkmale des Patentan¬ spruchs 1 gelöst. Ein Verfahren zur Herstellung eines derartigen Polsterkernes ist im Anspruch x angegeben. Weitere Ausgestaltungen der Erfindung sind den Unteran¬ sprüchen zu entnehmen.This object is achieved in a generic upholstery core by the characterizing features of patent claim 1. A method for producing such a cushion core is specified in claim x. Further embodiments of the invention can be found in the subclaims.
Die Erfindung ist in der Zeichnung dargestellt und in der Beispielbeschreibung näher erläutert. Es zeigenThe invention is illustrated in the drawing and explained in more detail in the example description. Show it
Fig. 1 ein Kopfpolster,1 is a head cushion,
Fig. 2 eine Form zur Herstellung eines Polsterkerns Fig. 3 einen Ausschnitt aus einem Polsterkern mit Kno¬ tenpunkten undFIG. 2 shows a mold for producing an upholstery core. FIG. 3 shows a section of an upholstery core with knot points and
Ersatzh'-tt Fig. 4 einen Ausschnitt aus einem Polsterkern mit Schweißstellen.Substitute H'-tt Fig. 4 shows a section of an upholstery core with welds.
Figur 1 zeigt ein Kopfpolster 1 mit einem Polster- kern 2, einer Umhüllung 3 und einem Stoffbezug 4. Das Polster 1 ist durch eine U-förmige Stütze 5 gehalten, die den Polsterkern 2 durchdringt. Der Kern 2 besteht aus relativ temperaturbeständigen Fasern 6, vorzugs¬ weise aus Kunststoffasern. Derartige Polster können außer in der Luftfahrtindustrie auch in der Fahrzeug- und Möbelindustrie angewendet werden. Die einzelnen Fasern 6 sind innerhalb des Polsters 2 in vorzugsweise unregelmäßig verlaufenden räumlich gekrümmten Linien angeordnet, so daß diese bei Belastung des Polsters vorwiegend auf Biegung beansprucht werden. Infolge der Elastizität der Fasern 6 nimmt das Polster 2 nach Ent¬ lastung immer wieder seine ursprüngliche Gestalt an.FIG. 1 shows a head cushion 1 with a cushion core 2, a covering 3 and a fabric cover 4. The cushion 1 is held by a U-shaped support 5 which penetrates the cushion core 2. The core 2 consists of relatively temperature-resistant fibers 6, preferably of synthetic fibers. Such upholstery can be used in the automotive and furniture industries in addition to the aerospace industry. The individual fibers 6 are arranged inside the cushion 2 in preferably irregularly running spatially curved lines, so that these are predominantly subjected to bending when the cushion is loaded. As a result of the elasticity of the fibers 6, the cushion 2 takes on its original shape again and again after relief.
Das spezifische Gewicht der in Betracht kommendenThe specific weight of the candidate
3 Kunststoffe liegt etwa zwischen 1,1 und 1,5 g/cm . Damit sind Polsterkerne herstellbar, die bei einem3 plastics is between 1.1 and 1.5 g / cm. This makes it possible to manufacture upholstery cores that are used in one
3 Raumgewicht von etwa 60 bis 200 kg/m die erforderli¬ chen mechanischen Eigenschaften aufweisen.3 density of about 60 to 200 kg / m have the required mechanical properties.
Als Grundmaterialien zur Herstellung der Fasern 6 kom- men unter anderen folgende Werkstoffe in Frage.The following materials can be used as basic materials for the production of the fibers 6.
Extrudierbare KunststoffeExtrudable plastics
1. Polyetheretherketon (PEEK). 2. Polyetherimid, (PEI).1. Polyether ether ketone (PEEK). 2. Polyetherimide, (PEI).
3. Polyamidimid, (PAI).3. Polyamideimide, (PAI).
4. Polyethersulfon, (PES) . Nicht extrudierbare Kunststoffe4. Polyethersulfone, (PES). Non-extrudable plastics
5. Aramid5. Aramid
6. Polybenzimidazol, (PBI). 7. Polyakrylnitril, (PAN) .6. Polybenzimidazole, (PBI). 7. Polyacrylonitrile, (PAN).
Figur 2 zeigt eine Form 7 zum Herstellen von Polster¬ kernen. Diese Form 7 besteht aus einer oberen Hälfte 8 und einer unteren Hälfte 9, die sich in der Teilungs- ebene 10 berühren. Die Form 7 ist teilweise geschnit¬ ten. Der gestrichelt dargestellte Hohlraum hat die Gestalt des herzustellenden Polsters 11. Die Hälften 8,9 weisen Kühlkanäle 12 für eine Kühlflüssigkeit auf. Innerhalb der Form 7 sind zwei Düsen 13 und 14 angeord- net, die je eine Vielzahl von kleinen Bohrungen 17 aufweisen, und in Richtung der Pfeile 15 und 16 ver¬ schiebbar ausgeführt sind. Zur Herstellung eines Pol¬ sters 11 wird ein geeigneter Kunststoff durch die Boh¬ rungen 17 in den Hohlraum der Form 7 extrudiert. Dabei tritt eine Vielzahl plastischer Kunststoffäden in die Form 7 ein und wird durch eine gesteuerte Bewegung der Düsen 13,14 in Richtung der Pfeile 15,16 innerhalb der Form 7 gleichmäßig verteilt. Da die Form gekühlt wird, erstarren die Fäden zu ungleichmäßig verlaufenden räum- lieh gekrümmten Fasern 6. Durch Variation des Durchmes¬ sers der Bohrungen 17 sowie des Anteils der Fasern 6 am Formvolumen kann die jeweils geforderte Beschaffen¬ heit der Polster eingestellt werden. Da die Fasern 6 in der Form 7 erstarren, entspricht deren äußere Kon- tur der äußeren Gestalt des herzustellenden Polster¬ kerns 11, wenn dieser der Form 7 entnommen wird.Figure 2 shows a mold 7 for the manufacture of cushion cores. This shape 7 consists of an upper half 8 and a lower half 9, which touch in the parting plane 10. The shape 7 is partially cut. The cavity shown in dashed lines has the shape of the pad 11 to be produced. The halves 8, 9 have cooling channels 12 for a cooling liquid. Arranged within the mold 7 are two nozzles 13 and 14, each of which has a large number of small bores 17 and are designed to be displaceable in the direction of the arrows 15 and 16. To produce a cushion 11, a suitable plastic is extruded through the holes 17 into the cavity of the mold 7. A large number of plastic plastic threads enter the mold 7 and are evenly distributed within the mold 7 by a controlled movement of the nozzles 13, 14 in the direction of the arrows 15, 16. Since the mold is cooled, the threads solidify to form irregularly curved, spatially curved fibers 6. By varying the diameter of the bores 17 and the proportion of the fibers 6 in the mold volume, the required properties of the upholstery can be adjusted. Since the fibers 6 solidify in the mold 7, their outer contour corresponds to the outer shape of the cushion core 11 to be produced when this is removed from the mold 7.
Figur 3 zeigt in einem Ausschnitt aus einem Polster¬ kern mit Fasern 6 eine weitere Ausgestaltung der Erfin- düng. Diese besteht darin, daß die Fasern 6 mit einem Überzug versehen sind, der diese als dünne Haut umgibt und an den Berührunhgsstellen der Fasern 6 Knoten 19 bildet. Der Überzug kann durch Tauchen oder Sprühen aufgetragen sein und besteht im allgemeinen aus einem geeigneten Harz, z.B. auf Polyimid-Basis. Es ist auch denkbar, daß als Überzugsmaterial ein Silicon-Elasto¬ mer verwendet wird. Hierdurch wird die Wärmebeständig¬ keit der Fasern 6 weiter erhöht. Es ist weiterhin denkbar, daß dem Überzug feuerhemmende Wirkstoffe ent¬ haltende Mikrohohlkugeln beigemischt sind.FIG. 3 shows in a section of a cushion core with fibers 6 a further embodiment of the invention. fertilizer This consists in that the fibers 6 are provided with a coating which surrounds them as thin skin and forms nodes 19 at the points of contact of the fibers 6. The coating can be applied by dipping or spraying and generally consists of a suitable resin, for example based on polyimide. It is also conceivable that a silicone elastomer is used as the coating material. This further increases the heat resistance of the fibers 6. It is also conceivable that hollow microspheres containing fire-retardant active substances are mixed into the coating.
Figur 4 zeigt in einem Ausschnitt eine weitere Ausge¬ staltung eines Polsters. Hier sind die Fasern 6 an ihren Berührungsstellen miteinander verschweißt. Die Schweißstellen 20 ergeben sich automatisch, wenn die Eigentemperatur der Fasern nach dem Extrudieren hierzu ausreicht.FIG. 4 shows a further embodiment of a cushion. Here the fibers 6 are welded together at their contact points. The welds 20 result automatically if the intrinsic temperature of the fibers is sufficient for this after extrusion.
Eine Ausgestaltung des Formvorganges besteht darin, daß das Extrudieren von oben in eine oben offene Form erfolgt und die Form erst danach geschlossen wird. Auch hierbei führen die Düsen gesteuerte Bewegungen aus, um die Fasern gleichmäßig zu verteilen.One embodiment of the molding process is that the extrusion takes place from above into an open mold and the mold is only closed afterwards. Here, too, the nozzles perform controlled movements in order to distribute the fibers evenly.
Eine weitere Ausgestaltung der Erfindung besteht da¬ rin, daß die Fasern 6 des Polsterkerns aus unterschied¬ lichen Materialien bestehen.A further embodiment of the invention consists in the fibers 6 of the cushion core being made of different materials.
Weiterhin ist es denkbar, daß der Kern 2 innerhalb der Form 7 mit einer vorzugsweise aus einem Silikonmate¬ rial bestehenden Haut versehen wird.Furthermore, it is conceivable that the core 2 within the mold 7 is provided with a skin which preferably consists of a silicone material.
ErsatzJaft Substitute Jaft

Claims

Polsterkern, insbesondere für einen Flugzeugsitz, und Verfahren zu dessen HerstellungPatentansprüche Upholstery core, in particular for an aircraft seat, and method for the production thereof
1. Polsterkern, insbesondere für einen Flugzeug¬ sitz, bestehend aus vorzugsweise unregelmäßig ver¬ laufenden, räumlich gekrümmten elastischen langge- streckten Elementen, dadurch g e k e n n z e i c h¬ n e t , daß die Elemente als aus temperaturbestän¬ digem Kunststoff bestehende Fasern (6) ausgebildet sind.1. Upholstery core, in particular for an aircraft seat, consisting of preferably irregularly running, spatially curved, elastic, elongated elements, so that the elements are designed as fibers (6) consisting of temperature-resistant plastic.
2. Polsterkern nach Anspruch 1, dadurch g e- k e n n z e i c h n e t , daß die gegenseitigen Be¬ rührungsstellen der einzelnen Fasern (6) durch Kle¬ ben als Knoten (19) ausgebildet sind.2. Upholstery core according to claim 1, characterized in that the mutual contact points of the individual fibers (6) are formed by gluing as nodes (19).
3. Polsterkern nach Anspruch 1 oder 2, dadurch g e k e n n z e i c h n e t , daß die gegenseitigen Berührungsstellen der einzelnen Fasern (6) als Schweisstellen (20) ausgebildet sind.3. Upholstery core according to claim 1 or 2, characterized in that the mutual contact points of the individual fibers (6) are designed as welding points (20).
4. Polsterkern nach einem der Ansprüche 1 bis 3, dadurch g e k e n n z e i c h n e t , daß dem Grundmaterial der Fasern (6) Wirkstoffe beigemengt sind.4. Upholstery core according to one of claims 1 to 3, characterized in that active ingredients are added to the base material of the fibers (6).
5. Polsterkern nach einem der Ansprüche 1 bis 4, dadurch g e k e n n z e i c h n e t , daß die Wirk¬ stoffe zur Erhöhung der Festigkeit dienen.5. Upholstery core according to one of claims 1 to 4, characterized in that the active substances serve to increase the strength.
IC-' IC- '
6. Polsterkern nach einem der Ansprüche 1 bis 5, dadurch g e k e n n z e i c h n e t , daß die Wirk¬ stoffe zur Erhöhung der Temperaturfestigkeit dienen.6. Upholstery core according to one of claims 1 to 5, characterized in that the active substances serve to increase the temperature resistance.
7. Polsterkern nach einem der Ansprüche 1 bis 6, dadurch g e k e n n z e i c h n e t , daß die Fa¬ sern (6) einen Wirkstoffe enthaltenden Überzug auf¬ weisen.7. Upholstery core according to one of claims 1 to 6, characterized in that the fibers (6) have a coating containing active ingredients.
8. Polsterkern nach einem der Ansprüche 1 bis 7, dadurch g e k e n n z e i c h n e t , daß der Über¬ zug Wirkstoffe zur Erhöhung der Temperaturfestig¬ keit enthält.8. Upholstery core according to one of claims 1 to 7, characterized in that the coating contains active ingredients for increasing the temperature resistance.
9. Verfahren zur Herstellung eines Polsterkernes, insbesondere für einen Flugzeugsitz, bestehend aus vorzugsweise unregelmäßig verlaufenden, räumlich ge¬ krümmten, elastischen, Fasern (6), dadurch g e ¬ k e n n z e i c h n e t , daß die Fasern (6) in plastischem Zustand in eine Form eingebracht und gleichmäßig innerhalb des Formvolumens verteilt und abgekühlt werden.9. A method for producing an upholstery core, in particular for an aircraft seat, consisting of preferably irregularly running, spatially curved, elastic, fibers (6), characterized in that the fibers (6) are introduced into a mold in a plastic state and evenly distributed and cooled within the mold volume.
10. Verfahren nach Anspruch 9, dadurch g e k e n n- z e i c h n e t , daß die Fasern (6) mittels Extru- dierdüsen (13,14) in die Form (7) eingebracht wer¬ den.10. The method according to claim 9, characterized in that the fibers (6) are introduced into the mold (7) by means of extrusion nozzles (13, 14).
11. Verfahren nach Anspruch 9 oder 10, dadurch g e- k e n n z e i c h n e t , daß die Düsen (13,14) wäh¬ rend des Extrudierens eine gesteuerte Relativbewe¬ gung gegenüber der Form (7) ausführen. 11. The method according to claim 9 or 10, characterized in that the nozzles (13, 14) perform a controlled relative movement with respect to the mold (7) during the extrusion.
12. Verfahren nach einem der Ansprüche 9 bis 11, dadurch g e k e n n z e i c h n e t, daß die Form (7) durch ein innerhalb deren Wandung durch Kanäle 12 strömendes Kühlmittel gekühlt wird.12. The method according to any one of claims 9 to 11, characterized in that the mold (7) is cooled by a coolant flowing through channels 12 within its wall.
13. Verfahren nach einem der Ansprüche 9 bis 12, da¬ durch g e k e n n z e l e h n e t, daß die Form (7) horizontal geteilt ist und das Einbringen der Fa¬ sern von oben in die oben offene Form (7) erfolgt.13. The method according to any one of claims 9 to 12, so that the shape (7) is divided horizontally and the fibers are introduced from above into the open top shape (7).
1010
14. Verfahren nach einem der Ansprüche 9 bis 13, da¬ durch g e k e n n z e i c h n e t, daß die Form (7) eine Kühlflüssigkeit enthält, in die die Fasern (6) unmittelbar extrudiert werden.14. The method according to any one of claims 9 to 13, by means of that the mold (7) contains a cooling liquid into which the fibers (6) are directly extruded.
"15 " 15
15. Verfahren nach einem der Ansprüche 9 bis 14, da¬ durch g e k e n n z e i c h n e t , daß die Fa¬ sern (6) innerhalb der Form (7) durch eine von un¬ ten kommende Luftströmung bis zur Erstarrung in der15. The method according to any one of claims 9 to 14, characterized by the fact that the fibers (6) within the mold (7) are caused by an air flow coming from below until solidification in the mold
20 Schwebe gehalten und gekühlt werden.20 be kept in suspension and cooled.
16. Verfahren zur Herstellung eines Polsterkernes, insbesondere für einen Flugzeugsitz, bestehend aus vorzugsweise unregelmäßig verlaufenden, räumlich ge-16. Method for producing an upholstery core, in particular for an aircraft seat, consisting of preferably irregularly running, spatially
25 krümmten, elastischen Fasern (6), dadurch g e ¬ k e n n z e i c h n e t , daß vorgefertigte Fa- ■ sern (6) durch Wärme plastifiziert und mittels der Form (7) In die Gestalt des Polsterkerns gebracht werden.25-curved, elastic fibers (6), characterized denotes ge ¬ that prefabricated Fa ■ fibers (6) plasticized by heat and are brought into the shape of the cushion core by means of the mold (7).
3030
17. Verfahren nach einem der Ansprüche 9 bis 16, dadurch g e k e n n z e i c h n e t , daß die Fa¬ sern (6) durch Tauchen oder Sprühen mit einem Über¬ zug versehen werden17. The method according to any one of claims 9 to 16, characterized in that the fibers (6) are provided with a coating by dipping or spraying
3535
z» z »
PCT/DE1986/000152 1985-04-09 1986-04-09 A cushion core, in particular for an aircraft seat, and a process for its manufacture WO1986006114A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08628788A GB2185044B (en) 1985-04-09 1986-04-09 A process for manufacturing a cushion core, particularly for an aircraft seat

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEG8510425.6U 1985-04-09
DE8510425 1985-04-09
DE19853513414 DE3513414A1 (en) 1985-04-15 1985-04-15 Cushion cores and process for the production of cushion cores
DEP3513414.3 1985-04-15

Publications (1)

Publication Number Publication Date
WO1986006114A1 true WO1986006114A1 (en) 1986-10-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1986/000152 WO1986006114A1 (en) 1985-04-09 1986-04-09 A cushion core, in particular for an aircraft seat, and a process for its manufacture

Country Status (4)

Country Link
EP (1) EP0217883B1 (en)
DE (1) DE3690196C1 (en)
GB (1) GB2185044B (en)
WO (1) WO1986006114A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991018828A1 (en) * 1990-06-08 1991-12-12 Vesa, Anneli Apparatus for the production of formed parts
EP0622332A1 (en) * 1992-08-04 1994-11-02 Teijin Limited Heat and flame resisting cushion material and seat for vehicle
WO1996002693A1 (en) * 1994-07-13 1996-02-01 E.I. Du Pont De Nemours And Company Fiber clusters molding process and equipment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2547673Y2 (en) * 1990-07-17 1997-09-10 幸一 平田 Cushioning material

Citations (3)

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Publication number Priority date Publication date Assignee Title
US3459631A (en) * 1965-11-24 1969-08-05 Kem Wove Ind Inc Bendable,high loft,bonded,non-woven,textile fabric
US4040371A (en) * 1976-03-29 1977-08-09 E. I. Du Pont De Nemours And Company Polysiloxane coated polyester fibers blended with other fibers to obtain fibrous mass having more acceptable flame resistance than a mass of unblended polysiloxane coated fibers
DE3007343A1 (en) * 1980-02-27 1981-09-10 Johann Borgers Gmbh & Co Kg, 4290 Bocholt Fibre body moulding - uses some fibres with fusible surface to give thermal bonding during press-moulding

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1685164A1 (en) * 1967-05-17 1971-10-28 Borgers Johann Kg pad

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3459631A (en) * 1965-11-24 1969-08-05 Kem Wove Ind Inc Bendable,high loft,bonded,non-woven,textile fabric
US4040371A (en) * 1976-03-29 1977-08-09 E. I. Du Pont De Nemours And Company Polysiloxane coated polyester fibers blended with other fibers to obtain fibrous mass having more acceptable flame resistance than a mass of unblended polysiloxane coated fibers
DE3007343A1 (en) * 1980-02-27 1981-09-10 Johann Borgers Gmbh & Co Kg, 4290 Bocholt Fibre body moulding - uses some fibres with fusible surface to give thermal bonding during press-moulding

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991018828A1 (en) * 1990-06-08 1991-12-12 Vesa, Anneli Apparatus for the production of formed parts
US5378296A (en) * 1990-06-08 1995-01-03 Vesa; Juha Apparatus and process for the production of seat pad parts from loose padding raw material
EP0622332A1 (en) * 1992-08-04 1994-11-02 Teijin Limited Heat and flame resisting cushion material and seat for vehicle
EP0622332A4 (en) * 1992-08-04 1995-01-11 Teijin Ltd Heat and flame resisting cushion material and seat for vehicle.
WO1996002693A1 (en) * 1994-07-13 1996-02-01 E.I. Du Pont De Nemours And Company Fiber clusters molding process and equipment
US5942175A (en) * 1994-07-13 1999-08-24 E. I. Du Pont De Nemours And Company Fiber clusters molding process and equipment

Also Published As

Publication number Publication date
DE3690196C1 (en) 1989-10-26
DE3690196D2 (en) 1987-04-23
GB8628788D0 (en) 1987-01-07
GB2185044B (en) 1989-01-25
EP0217883A1 (en) 1987-04-15
GB2185044A (en) 1987-07-08
EP0217883B1 (en) 1990-09-19

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