EP0959731B1 - Piece moulee en mousse avec element d'ancrage integre dans la mousse - Google Patents

Piece moulee en mousse avec element d'ancrage integre dans la mousse Download PDF

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Publication number
EP0959731B1
EP0959731B1 EP96938969A EP96938969A EP0959731B1 EP 0959731 B1 EP0959731 B1 EP 0959731B1 EP 96938969 A EP96938969 A EP 96938969A EP 96938969 A EP96938969 A EP 96938969A EP 0959731 B1 EP0959731 B1 EP 0959731B1
Authority
EP
European Patent Office
Prior art keywords
foam
anchoring element
moulding
moulding according
filament
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.)
Expired - Lifetime
Application number
EP96938969A
Other languages
German (de)
English (en)
Other versions
EP0959731A1 (fr
Inventor
Hubert Mense
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.)
FS Fehrer GmbH and Co KG
Original Assignee
FS Fehrer GmbH and Co KG
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 FS Fehrer GmbH and Co KG filed Critical FS Fehrer GmbH and Co KG
Publication of EP0959731A1 publication Critical patent/EP0959731A1/fr
Application granted granted Critical
Publication of EP0959731B1 publication Critical patent/EP0959731B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/18—Seat parts having foamed material included in cushioning part
    • A47C7/20—Seat parts having foamed material included in cushioning part with reinforcement in the foam layer
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249986—Void-containing component contains also a solid fiber or solid particle

Definitions

  • the invention relates to a foam molding with a foamed anchoring element, through which the molded part with other components, in particular a cover is connectable.
  • the wires used for anchoring adhere comparatively bad on the foam, i.e. the Connection takes place almost exclusively through the form closure caused by foaming. To achieve is sufficient resilience A sufficient cross section of the wire is required which, however, has an increased weight As a result, this is particularly the case in vehicle construction Saving energy is a disadvantage. Furthermore, it is necessary for different Purpose Wires of different lengths in stock to keep what the effort of storage significantly increased. Finally, foam parts often shredded after use Flakes or chemical dissolution of a recycling fed. Both processes are made by metallic Anchoring elements impaired or prevented, so that the wires previously in complex Way to remove.
  • the invention has become Task, a foam molded part with a To develop anchoring element in which the mechanical Resilience of the connection is increased, the weight of the cushion element decreases and common recycling processes are not affected become.
  • this task is solved by that the anchoring element is a thread (2) made of organic Material is parallel to the surface of the upholstery runs.
  • the starting point of the invention is to use a thread as anchoring element, which is parallel to the surface of the cushion in its Inside runs.
  • the thread that is preferably in individual areas through recesses in the foam molding is freely accessible, corresponds to its function that which is customary in the prior art Wires.
  • a thread through high flexibility, so that it adapts well to deformation of the upholstery and the risk of tearing out is reduced.
  • the molded part is characterized by a reduced Weight off because the density is more organic Media as a rule compared to metals is significantly lower. Furthermore, neither Shredding a chemical dissolution of the Foam prevented during recycling.
  • Anchoring elements are with everyone common reaction processes for manufacturing of foams, especially polyadditions and condensation.
  • Anchoring element In an advantageous development of the invention is the mechanical liability between Anchoring element and foam through chemical Bonds strengthened.
  • the central idea is one Anchoring element to use that at its Surface has functional chemical groups, which is also present on an educt of the foam and involved in the response to its formation are. Are polyacoles about their hydroxyl groups are involved in the reaction process, it is therefore advisable to use anchoring elements use whose surface is covered by hydroxyl groups are scheduled.
  • materials of the anchoring element are a variety of substances on animal or plant-based, because in particular Carbohydrates, like cellulose, with easily accessible Hydroxyl groups are provided. Since the superficial hydroxyl groups of the anchoring element chemical reactions in the same way how the hydroxyl groups of the polyalcohol go in, thus there is an intensive, chemical bond between element and Foam, i.e. networking with its molecules.
  • Foam and anchoring element if its Surface structured in relief, for example is wavy or serrated. In this case in addition to the chemical bond, a form fit.
  • Preferred materials for the anchoring element are natural fibers that are both superficial therminals Have hydroxyl groups as well on one microscopic length scale are structured.
  • suitable Materials are, for example, (long) hemp or jute, which have a high tensile strength.
  • In addition to being introduced as individual threads in the foam part is also a use in the form of of networks conceivable, so that distributed over an area Attachment options arise.
  • Polyurethane in particular is provided as foam, by polyaddition of di- or polyalcohols with di- or polyisocyanates.
  • Tools for the production of a foam molding with an anchoring element have a receiving device in which it is before the foaming process inserted and in which the element during the Reaction process is fixed.
  • the thread is first in the Cradle clamped.
  • a tensile load is required so that the Position of the flexible thread clearly in the tool is fixed and also during the foaming process preserved. Further increases by Preload the maximum possible tensile strength in the foamed state. Then follows on known way of foaming the tool and the removal of the molded part.
  • the thread is useful Subtracted endlessly from a roll and only immediately before inserting into the tool, after after clamping in the cradle or after Tailored the completion of the foaming process. On in this way, the stocking is much easier, because no anchoring elements with different Dimensions to be stocked.
  • molded part shown in Figure 1 (1) preferably consists of polyurethane, are parallel foamed threads (2) running to its surface, for example from long hemp or jute consist.
  • the thread (2) is through recesses (3) accessible in the molded part (1) by round or square elevations of the mold can be produced are on which the thread (2) during the Can fix the foaming process.
  • the outer cover (4) of the upholstery element is by fasteners (5), such as hooks or threads, through the cutouts (3) run, anchored to the thread (2), whereby by the tensile load grooves (6) on the surface of the cushion element arise, each run parallel to threads (2).
  • a between reference (4) and molded part (1) arranged fleece (7), improved the air circulation through the cushion and makes its surface appear softer.
  • Figure 2 shows a cross section through an alternative Molding (1) in which the thread (2) in shape a polyline runs through the foam.
  • the attachment of a Reference (4) or other object of different Sides of the form part (1) forth on one single, continuous thread (2) take place without that fasteners (5) a large material thickness of the molded part (1) must reach through.
  • Further can be different without dividing the thread (2) Stretch parallel to the upholstery surface generate where anchoring can take place and thus a wide range of filing patterns create a reference.
  • Outside areas (8) of the molded part (1) can be different Have material properties, and integral with the molded part (1) are manufactured or placed.

Landscapes

  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Claims (10)

  1. Pièce moulée en substance alvéolaire, comportant un élément d'ancrage qui y est incorporé lors de la formation de la substance alvéolaire, au moyen duquel la pièce moulée peut être reliée à d'autres composants, en particulier un revêtement, caractérisée en ce que l'élément d'ancrage est un fil (2) en matériau organique, s'étendant parallèlement à la surface du rembourrage.
  2. Pièce moulée en substance alvéolaire selon la revendication 2, avec un polyalcool à titre d'éduit, réagissant avec d'autres composants de réaction pour donner une substance alvéolaire, par des processus de réticulation moléculaire accompagnés de craquage des groupes hydroxyles, caractérisée en ce que la surface de l'élément d'ancrage présente des groupes hydroxyles avant la formation de la substance alvéolaire.
  3. Pièce moulée selon la revendication 1 ou 2, caractérisée en ce que le composant est fixé en plusieurs endroits sur l'élément d'ancrage.
  4. Pièce moulée selon l'une des revendications précédentes, caractérisée en ce que la surface de l'élément d'ancrage est munie d'une structure.
  5. Pièce moulée selon l'une des revendications précédentes, caractérisée en ce que l'élément d'ancrage est constitué de fibres naturelles.
  6. Pièce moulée selon la revendication 5, caractérisée en ce que l'élément d'ancrage est constitué de chanvre ou de jute.
  7. Pièce moulée selon l'une des revendications précédentes, caractérisée en ce que la substance alvéolaire est du polyuréthanne.
  8. Pièce moulée selon l'une des revendications précédentes, caractérisée en ce que le fil (2) s'étend sous la forme d'un tracé polygonal.
  9. Procédé de fabrication d'une pièce moulée en substance alvéolaire selon l'une des revendications 1 à 8, avec un outil destiné à produire la substence alvéolaire, présentant un dispositif support pour assurer la fixation de l'élément d'ancrage, caractérisé par les étapes de procédé suivantes :
    enserrement du fil (2) en matériau organique, sous traction, dans le dispositif support,
    production de la substance alvéolaire dans l'outil,
    prélèvement de la pièce moulée (1).
  10. Procédé selon la revendication 9, caractérisé en ce que le fil (2) est extrait d'un rouleau et découpé avant ou après la production de la substance alvéolaire.
EP96938969A 1995-11-02 1996-10-30 Piece moulee en mousse avec element d'ancrage integre dans la mousse Expired - Lifetime EP0959731B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19540714 1995-11-02
DE19540714 1995-11-02
PCT/DE1996/002084 WO1997016093A1 (fr) 1995-11-02 1996-10-30 Piece moulee en mousse avec element d'ancrage integre dans la mousse

Publications (2)

Publication Number Publication Date
EP0959731A1 EP0959731A1 (fr) 1999-12-01
EP0959731B1 true EP0959731B1 (fr) 2002-08-28

Family

ID=7776367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96938969A Expired - Lifetime EP0959731B1 (fr) 1995-11-02 1996-10-30 Piece moulee en mousse avec element d'ancrage integre dans la mousse

Country Status (7)

Country Link
US (1) US5993955A (fr)
EP (1) EP0959731B1 (fr)
JP (1) JP2000512163A (fr)
CZ (1) CZ295648B6 (fr)
DE (2) DE59609610D1 (fr)
PL (1) PL181216B1 (fr)
WO (1) WO1997016093A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2825601B1 (fr) 2001-06-08 2003-09-12 Faurecia Sieges Automobile Siege de vehicule et procede de fabrication d'une matelassure pour un tel siege
JP3735681B2 (ja) * 2002-07-08 2006-01-18 日本発条株式会社 自動車用シート
JP2010527845A (ja) * 2007-05-29 2010-08-19 アイイーイー インターナショナル エレクトロニクス アンド エンジニアリング エス．エイ． 張りシート部材
US7946649B2 (en) * 2007-10-01 2011-05-24 Lear Corporation Vehicle seat assembly having layered seating system with attachment member
JP5578019B2 (ja) * 2010-10-25 2014-08-27 トヨタ紡織株式会社 車両用シートのパッドおよびその製造方法
FR3022194B1 (fr) * 2014-06-11 2016-07-15 Centre D'etude Et De Rech Pour L'automobile (Cera) Matelassure de siege de vehicule automobile
US9776545B1 (en) 2016-03-30 2017-10-03 Lear Corporation Attachment port

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3649974A (en) * 1969-12-15 1972-03-21 Universal Oil Prod Co Vehicle seat
US3649975A (en) * 1969-12-22 1972-03-21 Will Ray Spurgeon Shop tool
US3961823A (en) * 1974-09-09 1976-06-08 General Motors Corporation Vehicle seat bolster wire assembly
US4452488A (en) * 1981-12-11 1984-06-05 General Motors Corporation Seat assembly
US5538785A (en) * 1990-11-14 1996-07-23 Dingler; Gerhard Construction element
DE4446450C1 (de) * 1994-12-23 1996-04-04 Johnson Controls Gmbh & Co Kg Befestigungselement zum Einschäumen in ein Schaumteil

Also Published As

Publication number Publication date
US5993955A (en) 1999-11-30
CZ134398A3 (cs) 1999-06-16
JP2000512163A (ja) 2000-09-19
PL181216B1 (pl) 2001-06-29
DE59609610D1 (de) 2002-10-02
WO1997016093A1 (fr) 1997-05-09
PL326321A1 (en) 1998-09-14
CZ295648B6 (cs) 2005-09-14
DE29622614U1 (de) 1997-04-10
EP0959731A1 (fr) 1999-12-01

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