EP0959731B1 - Schaumstofformteil mit eingeschäumtem verankerungselement - Google Patents
Schaumstofformteil mit eingeschäumtem verankerungselement Download PDFInfo
- 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
Links
- 238000004873 anchoring Methods 0.000 title claims description 30
- 239000006260 foam Substances 0.000 title claims description 30
- 238000010097 foam moulding Methods 0.000 title claims description 11
- 238000000034 method Methods 0.000 claims description 12
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 9
- 150000005846 sugar alcohols Polymers 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 244000025254 Cannabis sativa Species 0.000 claims description 3
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims description 3
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims description 3
- 240000000491 Corchorus aestuans Species 0.000 claims description 3
- 235000011777 Corchorus aestuans Nutrition 0.000 claims description 3
- 235000010862 Corchorus capsularis Nutrition 0.000 claims description 3
- 235000009120 camo Nutrition 0.000 claims description 3
- 235000005607 chanvre indien Nutrition 0.000 claims description 3
- 239000011487 hemp Substances 0.000 claims description 3
- 239000011368 organic material Substances 0.000 claims description 3
- 238000003776 cleavage reaction Methods 0.000 claims 1
- 230000007017 scission Effects 0.000 claims 1
- 238000005187 foaming Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000004064 recycling Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000005056 polyisocyanate Substances 0.000 description 2
- 229920001228 polyisocyanate Polymers 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- -1 cellulose Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 125000003636 chemical group Chemical group 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000013518 molded foam Substances 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
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)
Description
- Figur 1
- angeschnittenes Polsterelement, mit erfindungsgemäßem Schaumstofformteil
- Figur 2
- Schnitt durch ein alternatives Schaumstofformteil
Claims (10)
- Schaumstofformteil mit einem eingeschäumten Verankerungselement, durch welches das Formteil mit weiteren Bauteilen, insbesondere einem Bezug, verbindbar ist, dadurch gekennzeichnet, daß das Verankerungselement ein Faden (2) aus organischem Material ist, der parallel zur Oberfläche des Polsters verläuft.
- Schaumstofformteil nach Anspruch 2 mit einem Polyalkohol als Edukt, das durch molekulare Vernetzungen unter Aufspaltung von Hydroxylgruppen mit weiteren Reaktionskomponenten zum Schaumstoff reagiert, dadurch gekennzeichnet, daß die Oberfläche des Verankerungselementes vor dem Einschäumen Hydroxylgruppen aufweist.
- Formteil nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Bauteil mehrfach am Verankerungselement befestigt ist.
- Formteil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Oberfläche des Verankerungselementes mit einer Struktur versehen ist.
- Formteil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Verankerungselement aus Naturfasern besteht.
- Formteil nach Anspruch 5, dadurch gekennzeichnet, daß das Verankerungselement aus Hanf oder Jute besteht.
- Formteil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Schaumstoff Polyurethan ist.
- Formteil nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Faden (2) in Gestalt eines Polygonzuges verläuft.
- Verfahren zur Herstellung eines Schaumstofformteils nach einem der Ansprüche 1 bis 8 mit einem ausschäumbaren Werkzeug, das eine Aufnahmevorrichtung zur Fixierung des Verankerungselementes aufweist, gekennzeichnet durch folgende Verfahrensschritte:Einspannen des Fadens (2) aus organischem Material unter Zug in die Aufnahmevorrichtung,Ausschäumen des Werkzeugs,Entnahme des Formteils (1).
- Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß der Faden (2) von einer Rolle abgezogen und vor oder nach dem Ausschäumen zugeschnitten wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19540714 | 1995-11-02 | ||
DE19540714 | 1995-11-02 | ||
PCT/DE1996/002084 WO1997016093A1 (de) | 1995-11-02 | 1996-10-30 | Schaumstofformteil mit eingeschäumtem verankerungselement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0959731A1 EP0959731A1 (de) | 1999-12-01 |
EP0959731B1 true EP0959731B1 (de) | 2002-08-28 |
Family
ID=7776367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96938969A Expired - Lifetime EP0959731B1 (de) | 1995-11-02 | 1996-10-30 | Schaumstofformteil mit eingeschäumtem verankerungselement |
Country Status (7)
Country | Link |
---|---|
US (1) | US5993955A (de) |
EP (1) | EP0959731B1 (de) |
JP (1) | JP2000512163A (de) |
CZ (1) | CZ295648B6 (de) |
DE (2) | DE29622614U1 (de) |
PL (1) | PL181216B1 (de) |
WO (1) | WO1997016093A1 (de) |
Families Citing this family (7)
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 |
WO2008145671A2 (en) * | 2007-05-29 | 2008-12-04 | Iee International Electronics & Engineering S.A. | Upholstered seat element |
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)
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 |
-
1996
- 1996-10-30 CZ CZ19981343A patent/CZ295648B6/cs not_active IP Right Cessation
- 1996-10-30 EP EP96938969A patent/EP0959731B1/de not_active Expired - Lifetime
- 1996-10-30 JP JP09516986A patent/JP2000512163A/ja active Pending
- 1996-10-30 US US09/068,272 patent/US5993955A/en not_active Expired - Fee Related
- 1996-10-30 WO PCT/DE1996/002084 patent/WO1997016093A1/de active IP Right Grant
- 1996-10-30 DE DE29622614U patent/DE29622614U1/de not_active Expired - Lifetime
- 1996-10-30 DE DE59609610T patent/DE59609610D1/de not_active Expired - Lifetime
- 1996-10-30 PL PL96326321A patent/PL181216B1/pl not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US5993955A (en) | 1999-11-30 |
CZ134398A3 (cs) | 1999-06-16 |
PL181216B1 (pl) | 2001-06-29 |
DE29622614U1 (de) | 1997-04-10 |
JP2000512163A (ja) | 2000-09-19 |
EP0959731A1 (de) | 1999-12-01 |
CZ295648B6 (cs) | 2005-09-14 |
DE59609610D1 (de) | 2002-10-02 |
PL326321A1 (en) | 1998-09-14 |
WO1997016093A1 (de) | 1997-05-09 |
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