EP0959731A1 - Foam moulding with an anchoring element buried in the foam - Google Patents
Foam moulding with an anchoring element buried in the foamInfo
- Publication number
- EP0959731A1 EP0959731A1 EP96938969A EP96938969A EP0959731A1 EP 0959731 A1 EP0959731 A1 EP 0959731A1 EP 96938969 A EP96938969 A EP 96938969A EP 96938969 A EP96938969 A EP 96938969A EP 0959731 A1 EP0959731 A1 EP 0959731A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- anchoring element
- foam
- molded part
- thread
- molding according
- 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
Links
- 238000004873 anchoring Methods 0.000 title claims abstract description 34
- 239000006260 foam Substances 0.000 title claims abstract description 33
- 238000010097 foam moulding Methods 0.000 title abstract description 4
- 238000000465 moulding Methods 0.000 claims abstract description 8
- 239000011368 organic material Substances 0.000 claims abstract description 3
- 238000005187 foaming Methods 0.000 claims description 11
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 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
- 239000000835 fiber Substances 0.000 claims description 3
- 239000011487 hemp Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 150000005846 sugar alcohols Polymers 0.000 claims description 3
- 238000004132 cross linking Methods 0.000 claims description 2
- 239000007858 starting material Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000013518 molded foam Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000005056 polyisocyanate Substances 0.000 description 2
- 229920001228 polyisocyanate Polymers 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 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
- 238000009826 distribution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 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
- 239000011707 mineral Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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 molded part with a foamed-in anchoring element, by means of which the molded part can be connected to further components, in particular a cover.
- the mechanical strength of foams is comparatively low, especially in relation to tensile forces. If foam molded parts are to be connected to other components with tensile loads, it is therefore customary in the prior art either to carry out a large-area gluing or to use anchoring elements in order to ensure a wide distribution of the forces and punctual loads which lead to the tearing of the foam would be avoided.
- upholstery elements often consist of a central molded foam part, the surface of which is provided with a cover, usually a fabric or leather.
- a cover usually a fabric or leather.
- one or more wires are foamed into it, to which the cover is connected by fastening elements, for example threads or hooks.
- a tight connection creates in the area of the connection parts of the recesses on the surface of the upholstery, which improve the fixation of the cover and contribute to the visual and functional design of the surface.
- fastening points on the wire are freely accessible through recesses in the molded part, so that the connection is made easier.
- the foams used are predominantly polyurethanes which are produced by polyaddition of polyalcohols with polyisocyanates. The isocyanate reacts with the hydroxyl group which characterizes the alcohol.
- the object of the invention is to develop a foam molded part with an anchoring element in which the mechanical strength of the connection is increased, the weight of the cushion element is reduced and common recycling processes are not impaired.
- the anchoring element is a thread (2) made of organic material which runs parallel to the surface of the cushion.
- the starting point of the invention is to use a thread as an anchoring element which runs parallel to the surface of the cushion in its interior.
- the function of the thread which is preferably freely accessible in individual areas through recesses in the molded foam part, corresponds to that of the wires customary in the prior art.
- a thread is characterized by a high degree of flexibility, so that it adapts well to deformation of the cushion and the risk of tearing is reduced.
- the molded part is characterized by a reduced weight, since the density of organic media is generally significantly lower than that of metals. Furthermore, neither shredding nor chemical dissolution of the foam is prevented during recycling.
- the anchoring elements according to the invention can be used in all customary reaction processes for the production of foams, in particular polyadditions and condensations.
- the mechanical adhesion between the anchoring element and the foam is reinforced by chemical bonds.
- the central idea here is to use an anchoring element which has functional chemical groups on its surface which are also present on an educt of the foam and are involved in the reaction to its formation. Are polyacoles about their hydroxyl groups involved in the reaction process, it is therefore advisable to use anchoring elements whose surface is terminated by hydroxyl groups.
- a large number of substances on a mineral or vegetable basis are suitable as materials of the anchoring element, since in particular carbohydrates, such as cellulose, are provided with readily accessible hydroxyl groups.
- the adhesion between foam and anchoring element can be further improved if its surface is structured in relief, for example corrugated or serrated. In this case, in addition to the chemical bond, there is also a positive connection.
- Preferred materials for the anchoring element are natural fibers, which both have thermal hydroxyl groups on the surface and are structured on a microscopic length scale. Suitable materials are, for example, (long) hemp or jute, which have a high tensile strength. In addition to being introduced into the foam part as individual threads, use in the form of nets is also conceivable, so that fastening options are distributed over an area.
- polyurethane is provided as the foam, which is formed by polyaddition of di- or polyacolyols with di- or polyisocyanates.
- Tools for producing a foam molded part with an anchoring element have a receiving device, into which it is inserted before the foaming process and in which the element is fixed during the course of the reaction.
- the thread is first clamped in the receiving device.
- a tensile load is required so that the position of the flexible thread is clearly defined in the tool and is also retained during the foaming process.
- the maximum possible tensile strength in the foamed state increases due to the pretension. This is followed in a known manner by the foaming of the tool and the removal of the molded part.
- the thread is expediently pulled off a roll and cut only immediately before being inserted into the tool, after being clamped into the holding device or after the foaming process has been completed. In this way, stockpiling is made considerably easier, since there are no anchoring elements with different dimensions to be stored. Further details, features and advantages of the invention can be found in the following description, in which an exemplary embodiment of the invention is explained in more detail with reference to the drawing.
- the drawing shows a principle representation
- FIG. 1 cut cushion element, with foam molding according to the invention
- threads (2) are foamed in parallel to its surface and consist, for example, of long hemp or jute.
- the thread (2) is accessible through recesses (3) in the molded part (1), which can be produced by round or angular elevations of the molding tool, on which the thread (2) can be fixed during the foaming process.
- the outer cover (4) of the cushion element is anchored to the thread (2) by fastening elements (5), for example hooks or threads, which run through the recesses (3), with grooves (6) on the surface due to the tensile load surface of the upholstery element, each running parallel to threads (2).
- a fleece (7) arranged between cover (4) and molded part (1) improves the air circulation through the cushion and makes its surface appear softer. If the molded part (1) is produced using polyacollars as educts of the foam, a thread (2) provided on its surface with hydroxyl groups forms chemical bonds with the foam. Furthermore, there is an intensive positive connection between the thread (2) and the surrounding foam. In this way, a very firm and highly resilient connection between the anchoring element and the molded part (1) is ensured with a low weight and good recyclability of the material.
- FIG. 2 shows a cross section through an alternative molded part (1), in which the thread (2) runs through the foam in the form of a polygon.
- a cover (4) or other object can be attached to a single, continuous thread (2) from different sides of the molded part (1) without fixing elements (5) having a large material thickness of the molded part ( 1) have to take action.
- outside areas (8) of the molded part (1) can have different material properties, and can be produced or placed integrally with the molded part (1).
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Dowels (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Pens And Brushes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19540714 | 1995-11-02 | ||
DE19540714 | 1995-11-02 | ||
PCT/DE1996/002084 WO1997016093A1 (en) | 1995-11-02 | 1996-10-30 | Foam moulding with an anchoring element buried in the foam |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0959731A1 true EP0959731A1 (en) | 1999-12-01 |
EP0959731B1 EP0959731B1 (en) | 2002-08-28 |
Family
ID=7776367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96938969A Expired - Lifetime EP0959731B1 (en) | 1995-11-02 | 1996-10-30 | Foam moulding with an anchoring element buried in the foam |
Country Status (7)
Country | Link |
---|---|
US (1) | US5993955A (en) |
EP (1) | EP0959731B1 (en) |
JP (1) | JP2000512163A (en) |
CZ (1) | CZ295648B6 (en) |
DE (2) | DE29622614U1 (en) |
PL (1) | PL181216B1 (en) |
WO (1) | WO1997016093A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2825601B1 (en) | 2001-06-08 | 2003-09-12 | Faurecia Sieges Automobile | VEHICLE SEAT AND METHOD FOR MANUFACTURING A MATTRESS FOR SUCH A SEAT |
JP3735681B2 (en) * | 2002-07-08 | 2006-01-18 | 日本発条株式会社 | Automotive seat |
EP2155515B1 (en) * | 2007-05-29 | 2012-10-10 | 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 (en) * | 2010-10-25 | 2014-08-27 | トヨタ紡織株式会社 | Vehicle seat pad and method of manufacturing the same |
FR3022194B1 (en) * | 2014-06-11 | 2016-07-15 | Centre D'etude Et De Rech Pour L'automobile (Cera) | AUTOMOTIVE VEHICLE SEAT MAINASSURE |
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 (en) * | 1994-12-23 | 1996-04-04 | Johnson Controls Gmbh & Co Kg | Seat cover fastener, use in vehicles and mfg. process |
-
1996
- 1996-10-30 EP EP96938969A patent/EP0959731B1/en not_active Expired - Lifetime
- 1996-10-30 DE DE29622614U patent/DE29622614U1/en not_active Expired - Lifetime
- 1996-10-30 PL PL96326321A patent/PL181216B1/en not_active IP Right Cessation
- 1996-10-30 US US09/068,272 patent/US5993955A/en not_active Expired - Fee Related
- 1996-10-30 DE DE59609610T patent/DE59609610D1/en not_active Expired - Lifetime
- 1996-10-30 JP JP09516986A patent/JP2000512163A/en active Pending
- 1996-10-30 WO PCT/DE1996/002084 patent/WO1997016093A1/en active IP Right Grant
- 1996-10-30 CZ CZ19981343A patent/CZ295648B6/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9716093A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE59609610D1 (en) | 2002-10-02 |
CZ295648B6 (en) | 2005-09-14 |
WO1997016093A1 (en) | 1997-05-09 |
CZ134398A3 (en) | 1999-06-16 |
PL326321A1 (en) | 1998-09-14 |
US5993955A (en) | 1999-11-30 |
PL181216B1 (en) | 2001-06-29 |
DE29622614U1 (en) | 1997-04-10 |
EP0959731B1 (en) | 2002-08-28 |
JP2000512163A (en) | 2000-09-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3905607C2 (en) | ||
DE102005024408A1 (en) | Producing fiber reinforced foam materials for aircraft involves engaging through hole from first surface to engage at least one fiber bundle and pulling bundle(s) into through hole in foam material | |
EP1346902B1 (en) | Roof module for a vehicle and method of its production | |
DE4215521C2 (en) | Vehicle seat and method for its manufacture | |
DE102008017893B4 (en) | flooring | |
DE102006001663A1 (en) | United, padded interior trim panel for a vehicle | |
DE60121270T2 (en) | Multilayered product, its use in the manufacture of lightweight, sound-insulating, self-supporting articles and articles made therefrom | |
EP1740379B1 (en) | Composite component for a vehicle body, in particular a vehicle roof, and production method for said component | |
EP0959731A1 (en) | Foam moulding with an anchoring element buried in the foam | |
EP1044796B1 (en) | Multilayered composite building element and its manufacturing process | |
EP1391283A1 (en) | Method of making an internal lining for vehicles and internal lining for vehicles | |
EP2729326A2 (en) | Head restraint for a vehicle seat and method for producing said head restraint | |
DE10154472A1 (en) | Flat two dimensional panel for a cushioned vehicle seat back, has a knitted mesh reinforcement in plastic matrix | |
WO2020030725A1 (en) | Foam part, in particular for a vehicle seat, and method for producing a foam part | |
EP0719296A1 (en) | Process for producing interior trims for transport means and interior trims thus produced | |
WO1992006845A1 (en) | Panel or shell-like structural component | |
EP3551503B1 (en) | Printed insulating element | |
DE29923897U1 (en) | Device for attaching a cover to a foam body part, in particular an upholstered foam part for a flight or passenger seat | |
DE102010040082A1 (en) | Padding, particularly for seat, has reinforcing element formed by monofilament material, where monofilament has pre-determined cross section, and monofilament is plastic fiber or natural fiber of finite length | |
DE10318432A1 (en) | Molded carrier with at least one self-adhesive tape and process for making such a carrier | |
DE10025734B4 (en) | Upholstery element with anchoring insert | |
DE1704921A1 (en) | Process for the production of upholstery parts from elastic polyurethane foams as well as upholstery parts produced by the process | |
DE10338215A1 (en) | Upholstered part, in particular fitting part for the interior of a motor vehicle, and method for its production | |
EP3749800A1 (en) | Cover material for covering an airbag unit | |
DE19502458C2 (en) | Foam and process for making foams |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19980522 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE DE ES FR GB IT SE |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 20011128 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: MENSE, HUBERT |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): BE DE ES FR GB IT SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT Effective date: 20020828 Ref country code: GB Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20020828 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020828 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REF | Corresponds to: |
Ref document number: 59609610 Country of ref document: DE Date of ref document: 20021002 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20021031 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20021128 |
|
GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 20020828 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20030228 |
|
BERE | Be: lapsed |
Owner name: F.S. *FEHRER G.M.B.H. & CO. K.G. Effective date: 20021031 |
|
EN | Fr: translation not filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20030530 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20151218 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 59609610 Country of ref document: DE |