EP1240852B2 - Matelas - Google Patents

Matelas Download PDF

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Publication number
EP1240852B2
EP1240852B2 EP01870048A EP01870048A EP1240852B2 EP 1240852 B2 EP1240852 B2 EP 1240852B2 EP 01870048 A EP01870048 A EP 01870048A EP 01870048 A EP01870048 A EP 01870048A EP 1240852 B2 EP1240852 B2 EP 1240852B2
Authority
EP
European Patent Office
Prior art keywords
layer
fabric
foam
viscoelastic foam
mattress
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
EP01870048A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1240852B1 (fr
EP1240852A1 (fr
Inventor
Bernd Lambertz
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.)
Kabelwerk Eupen AG
Original Assignee
Kabelwerk Eupen AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8184937&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1240852(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to DK01870048T priority Critical patent/DK1240852T4/da
Priority to ES01870048T priority patent/ES2232586T5/es
Priority to EP01870048A priority patent/EP1240852B2/fr
Priority to AT01870048T priority patent/ATE281103T1/de
Priority to PT01870048T priority patent/PT1240852E/pt
Application filed by Kabelwerk Eupen AG filed Critical Kabelwerk Eupen AG
Priority to DE60106862T priority patent/DE60106862T3/de
Publication of EP1240852A1 publication Critical patent/EP1240852A1/fr
Publication of EP1240852B1 publication Critical patent/EP1240852B1/fr
Publication of EP1240852B2 publication Critical patent/EP1240852B2/fr
Application granted granted Critical
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
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/002—Mattress or cushion tickings or covers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/142—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities
    • A47C27/146—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities on the outside surface of the mattress or cushion

Definitions

  • the present invention relates to a mattress comprising at least one layer of foam.
  • mattresses or cushions made by sewing a layer of elastic (non-viscoelastic) foam with one or more non-elastic fabrics have been proposed on the market.
  • Such mattresses are for example made by means of a machine of the type described in US 5,974,994 .
  • the subject of the invention is therefore a mattress or layer according to claim 1.
  • the viscoelastic foam layer has a thickness of at least 2 cm, preferably at least 4 cm, preferably at least 6 cm.
  • at least the first fabric or the second fabric is elastic so as not to lose or reduce the viscoelastic properties and properties of the foam.
  • the first fabric or the second fabric has at least one greater elasticity than that of the viscoelastic foam layer.
  • the first fabric and the second fabric of the mattress are elastic fabrics of equal or different elasticity, in particular of the same elasticity.
  • the first elastic fabric has a higher elasticity than the viscoelastic foam.
  • the first elastic fabric is a fabric capable of undergoing maximum tensile elastic deformation in two plane directions perpendicular to each other, this maximum tensile elastic deformation of the fabric being greater than the maximum viscoelastic deformation of the viscoelastic foam layer. This makes it possible to better preserve the viscoelastic properties of the viscoelastic foam layer.
  • the second fabric is a flexible fabric having an elasticity equal to or different from that of the first fabric, in particular viscoelastic foam, preferably less than that of the first fabric, in particular the viscoelastic foam layer.
  • the first fabric and / or the second fabric may optionally have a variable elasticity, that is to say one of which has an elasticity different from that of another part.
  • the viscoelastic foam is advantageously perforated by means of one or more rounded tip needles. Such perforation has the advantage of reducing the number of tear primer.
  • the mattress has stitching lines formed from adjacent stitches, said stitches being made with a spacing such that the density of adjacent and successive stitching stitches per unit length is at least 10 stitches per 10 cm of stitching line; sewing, preferably from 10 to 50 stitches per 10 cm seam line.
  • the distance separating two successive stitches is advantageously between 0.3 and 1 cm, preferably between 0.4 and 0.8 cm, in particular about 0.5 cm.
  • the layer of viscoelastic foam is for example a polyether foam, in particular polyurethane, density (uncompressed state) of between 25 kg / m 3 and 100kg / m 3, preferably from 40kg / m 3 to 70kg / m 3.
  • the foam is open-celled or closed, but preferably open-celled or substantially open-celled.
  • Such a layer of foam is for example made of polyurethane, and is open cell.
  • the layer which may be of the variable thickness type or not, or the type with peak and recess is advantageously a layer of substantially constant thickness of about 4 to 6 cm.
  • the physical values are measured at 23 ° C, 50% humidity and after 48 hours storage. The measurements are taken in the middle of a product block.
  • Such viscoelastic layers are, for example, but advantageously "EUCATHERM C” ® layers, for example TC50-H, TC50-M and TC50-W sold by KABELWERK EUPEN AG.
  • This layer of viscoelastic foam 1 is connected to two elastic fabrics 2, 3, said fabrics 2, 3 having greater elasticity than that of the foam 1.
  • the tissues 2, 3 are sewn together with the interposition of the layer 1.
  • Sewing 4 are made thanks to rounded head needles. These stitches 4 form seam lines 4A, 4B.
  • the sewing points of a line are arranged relative to one another so that the distance separating two successive sewing points is approximately 5 mm. Sewing stitches that are too close together damage the viscoelastic foam, while stitches that are too far apart do not ensure a good follow-up of the fabric compared to the viscoelastic foam.
  • the elastic fabrics 2,3 which may have the same elasticity or different elasticities. These fabrics are for example made of stretch fabrics, such as Nicky-stretch, terry cloth, jersey fabric, knit fabric, etc. ; woven fabric, woven such as woven with crossed threads, woven plain or taffeta, satin, etc., fabrics provided with a coating, for example a polyurethane coating, threaded fabric, synthetic leather, natural leather, composite fabric, membrane, etc.
  • the fabrics are made of synthetic material, natural, mineral, or a mixture thereof.
  • the fabrics are made of cotton, polyester, elastomer, viscose, nylon, blends thereof, for example a cotton / polyester blend, for example 75% cotton / 25% polyester, 70% cotton / 30% polyester.
  • the fabrics have longitudinal and axial elastic elongation characteristics sufficient to take up the deformations or hollow of the foam layer 1.
  • the fabrics are able to follow the foam layer correctly.
  • the fabrics have an elastic elongation of at least 15%, in particular at least 25%, preferably at least 50%, preferably both in the longitudinal direction of the fabric and both in the axial direction of the fabric.
  • the elastic fabrics 2, 3 are advantageously sewn with the foam layer in an unstretched or substantially unstretched state, that is to say for the tissues 2, 3 to generate an elastic force on the foam or between sewing which is a function of the crushing of the foam at the stitching points and / or the swelling of the crushed foam after sewing.
  • This slight elastic stretching ensures that the tissues 2,3 correctly follow the movements of the viscoelastic foam during the use of the mattress, for example during the compression of the viscoelastic foam, as well as during the return of the latter in a state less compression.
  • elastic fabrics 2,3 are stretched elastically from 0 to 50%, for example less than 15%, or according to another example of more than 15%, advantageously more than 20%, preferably 25 to 50%. % in at least one direction extending between two adjacent seam lines, for example in a direction of which at least one component is substantially perpendicular to the two adjacent seam lines.
  • the fabrics 2,3 are stretched or slightly stretched (when making the stitches) relative to their stable or unstretched state, with a stretching rate sufficient for a compressed position of the viscoelastic foam between the seam lines, the fabrics 2,3 located between said seam lines are always under a slight elastic tension. (see figure 3 )
  • the mattress shown in figure 1 is for example manufactured as follows:
  • a layer of viscoelastic foam 1 is placed on a plate and between two elastic fabrics.
  • Tissues 2,3 are not subjected to axial and longitudinal stretching.
  • the assembly formed by the viscoelastic foam layer and the elastic fabrics is compressed, for example to a state of maximum or substantially maximal elastic compression.
  • Sewing stitches (tray stitching) are then performed to associate the fabrics 2,3 with each other, with the viscoelastic foam layer interposed. These stitches are made by means of a round-headed needle so as not to damage the viscoelastic foam layer and the elastic fabrics. These stitches advantageously define one or more lines, preferably a network of sewing lines that touch or intersect.
  • the elastic fabrics 2,3 are then slightly stretched by the swelling of the viscoelastic foam and by the maintenance of crushed portions of the viscoelastic foam at the stitches. The distance between two successive stitches is set between 3 mm and 10 mm, with a preference for about 5 mm.
  • a machine of the type described in the document is used.
  • US5974994 except that a layer of viscoelastic foam 3 to 8 cm thick and upper and lower elastic fabrics are used, round-headed needles are used to make stitching lines (continuous stitching) , and that the distance between two successive stitches is 0.5cm.
  • the elastic fabrics it is advantageous for the elastic fabrics to be in direct contact with the viscoelastic foam layer.
  • the restoring force of the elastic fabrics (caused by stretching thereof) is less than the expansion force of the compressed viscoelastic foam.
  • the compressed parts of the viscoelastic foam are obtained by virtue of the stitches and the degree of compression of the foam at the location of the seam at the time of sewing.
  • a mattress sewn in the form of a cover for example adapted to receive a cushion.
  • the mattress according to the invention has many applications or uses, for example in bedding, hospital mattresses, baby mattresses, mattress cover, cushion cover, seat cover (for example car), protective layer (for example to protect objects during transport), ergonomic cushion, extra mattress, anti-decubitus mattress, acoustic absorbing mattress, thermal insulation blanket, packaging, mattresses allowing better blood circulation or allowing a better sleep, etc.
  • One or the elastic fabrics may be made of a waterproof material or not.
  • the mattress according to the invention therefore has applications in orthopedics, medicine, acoustics, energy, shock absorption, etc.
  • the viscoelastic foam presents a variable hardness as a function of the temperature and by a very weak resilience, thus allowing a very strong absorption of the deformation energy.
  • the foam advantageously has a thermovariability, so that the foam compressed by a human body first opposes a certain resistance, this decreasing resistance to become very low once the temperature of the foam is about 37 ° C.
  • the viscoelastic layer may be profiled, for example to have depressions and peaks. However, given the properties of the foam, the presence of such hollows or peaks is not absolutely necessary, except for very particular application.
  • the viscoelastic foam layer may be provided with an armature or an inner mesh, preferably flexible or deformable, for example to give and maintain a particular shape to the mattress.

Landscapes

  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
EP01870048A 2001-03-15 2001-03-15 Matelas Expired - Lifetime EP1240852B2 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
ES01870048T ES2232586T5 (es) 2001-03-15 2001-03-15 Colchon.
EP01870048A EP1240852B2 (fr) 2001-03-15 2001-03-15 Matelas
AT01870048T ATE281103T1 (de) 2001-03-15 2001-03-15 Matratze
PT01870048T PT1240852E (pt) 2001-03-15 2001-03-15 Colchao
DK01870048T DK1240852T4 (da) 2001-03-15 2001-03-15 Madras
DE60106862T DE60106862T3 (de) 2001-03-15 2001-03-15 Matratze

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01870048A EP1240852B2 (fr) 2001-03-15 2001-03-15 Matelas

Publications (3)

Publication Number Publication Date
EP1240852A1 EP1240852A1 (fr) 2002-09-18
EP1240852B1 EP1240852B1 (fr) 2004-11-03
EP1240852B2 true EP1240852B2 (fr) 2009-05-27

Family

ID=8184937

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01870048A Expired - Lifetime EP1240852B2 (fr) 2001-03-15 2001-03-15 Matelas

Country Status (6)

Country Link
EP (1) EP1240852B2 (es)
AT (1) ATE281103T1 (es)
DE (1) DE60106862T3 (es)
DK (1) DK1240852T4 (es)
ES (1) ES2232586T5 (es)
PT (1) PT1240852E (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7707670B2 (en) 2003-10-14 2010-05-04 Tempur-Pedic Management, Inc. Pillow top for a cushion
US8418297B2 (en) 2005-06-24 2013-04-16 Tempur-Pedic Management, Llc Reticulated material body support and method

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006503649A (ja) * 2002-10-23 2006-02-02 ティーシーエーエム テクノロジーズ， インコーポレイテッド 高度な機能を備えた褥瘡防止マット
ES2265206B1 (es) * 2003-09-17 2007-11-01 Flex Equipos De Descanso, S.A. Colchon con insertos de elasticidad variable.
ES2384839B1 (es) * 2009-09-16 2013-02-05 Flex Equipos De Descanso, S.A. Cobertura almohadillada para colchones y proceso de fabricación de la misma.
ES2364566B1 (es) * 2010-01-14 2012-06-19 Lo Monaco Hogar, S.L. Colchón para cama.
DE102013205664B4 (de) * 2013-03-28 2017-11-02 Lufthansa Technik Ag Matratze für Luftfahrzeuge
IT201600128624A1 (it) * 2016-12-20 2017-03-20 First Dream S R L Sottosella ammortizzante in schiuma viscoelastica termoformante

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK520482A (da) * 1982-11-23 1984-05-24 Jacobsen P E B Sundhedsmadras
DE19610979C1 (de) 1996-03-20 1997-11-20 Stutznaecker Emil Naehmasch Verfahren und Vielnadelnähmaschine zum Nähen von großflächigem Nähgut

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7707670B2 (en) 2003-10-14 2010-05-04 Tempur-Pedic Management, Inc. Pillow top for a cushion
US8418297B2 (en) 2005-06-24 2013-04-16 Tempur-Pedic Management, Llc Reticulated material body support and method

Also Published As

Publication number Publication date
ES2232586T5 (es) 2009-11-02
ES2232586T3 (es) 2005-06-01
DK1240852T3 (da) 2005-03-14
PT1240852E (pt) 2005-03-31
DE60106862T2 (de) 2005-12-01
DK1240852T4 (da) 2009-09-14
EP1240852B1 (fr) 2004-11-03
ATE281103T1 (de) 2004-11-15
EP1240852A1 (fr) 2002-09-18
DE60106862D1 (de) 2004-12-09
DE60106862T3 (de) 2009-12-03

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