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EP2084994B1 - Matratze mit einer Schicht aus retikuliertem Schaumstoff mit relativ grossen Hohlräumen - Google Patents

Matratze mit einer Schicht aus retikuliertem Schaumstoff mit relativ grossen Hohlräumen Download PDF

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Publication number
EP2084994B1
EP2084994B1 EP09000138A EP09000138A EP2084994B1 EP 2084994 B1 EP2084994 B1 EP 2084994B1 EP 09000138 A EP09000138 A EP 09000138A EP 09000138 A EP09000138 A EP 09000138A EP 2084994 B1 EP2084994 B1 EP 2084994B1
Authority
EP
European Patent Office
Prior art keywords
mattress
foam
core layer
layer
springs
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.)
Not-in-force
Application number
EP09000138A
Other languages
English (en)
French (fr)
Other versions
EP2084994A1 (de
Inventor
Roland Oosterhout
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.)
Norma Boxmeer BV
Original Assignee
Norma Boxmeer BV
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 Norma Boxmeer BV filed Critical Norma Boxmeer BV
Publication of EP2084994A1 publication Critical patent/EP2084994A1/de
Application granted granted Critical
Publication of EP2084994B1 publication Critical patent/EP2084994B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/20—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with springs moulded in, or situated in cavities or openings in foamed material
    • 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
    • A47C27/001—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with several cushions, mattresses or the like, to be put together in one cover
    • 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
    • A47C27/15—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays consisting of two or more layers

Definitions

  • the present invention relates to a mattress according the preamble of claim 1.
  • the mattress may also comprise through holes in which no springs are accommodated, in other words, the through holes in the mattress do not necessarily all need to have a spring accommodated therein.
  • Such a mattress is generally known.
  • a core layer of, for example, foam material in the form of a network of interconnected cells, in which a matrix of 12 x 30 through holes is bored, is disposed centrally between the two lying surfaces and surrounded by further mattress layers.
  • the core layer is bounded on either side thereof by a layer which is suitable for distributing the pressure of the springs.
  • the foam material and the springs thus provide a combined spring action.
  • the matrix of through holes may comprise a different number of rows or columns, for example 8 to 15 rows and/or 25 to 35 columns.
  • a drawback of the known mattress is the fact that the network of interconnected cells impedes the movement of air and moisture in the mattress.
  • An adequate ventilation is important, however, in the case of mattresses for dissipating heat and moisture from the position where a person is lying on a mattress. It is known to provide the core layer with ventilation channels, which extend parallel to the lying surfaces of the mattress, so as to provide a better ventilation.
  • a reticulated foam material comprising larger cavities can more easily dissipate air and moisture (vapour) through the network of hollow spaces from the position where a person is sleeping than the foam material comprising a network of interconnected cells of the known mattress, which exhibits a porosity of more than 1000 cells per cm 3 .
  • a loss of resilience, or at least of resistance to compression, resulting from the use of the relatively large cavities may be compensated by the springs or by other layers in the mattress. The object of the present invention is thus accomplished.
  • the walls between the interconnected cells are lacking. Since the walls between the cavities are lacking, even further improved ventilation characteristics are obtained. After all, an air or vapour flow through the core layer is not impeded by walls between the ribs in that case, so that the air or vapour can flow more or less freely between the interconnected cavities.
  • the reticulated foam i.e. foam having a structure of "cells" whose cell walls have melted away, is excellently capable of providing the desired ventilation characteristics.
  • Reticulated foam is commercially available, for example of the Calipore® type from Draka.
  • a reticulated foam with relatively small cells having an average porosity of more than 500 cells per cm 3 , preferably more than 1000 cells per cm 3 impart greater firmness to the core layer at the outer side thereof.
  • the heights of the various layers may be varied as desired; a relatively thick layer of relatively large cavities will have comparatively better ventilation characteristics than a layer that is less thick.
  • the porosity of said at least one layer of reticulated foam comprising relatively large cavities is less than 200 cavities per cm 3 . It stands to reason that a porosity of 200 cavities per cm 3 provides even better ventilation characteristics of the core layer than a porosity of 200 to 500 cavities per cm 3 of a core layer comprising a reticulated foam.
  • a mattress having a breathable cover inclosing a composite resilient core.
  • the core has a top layer of visco-elastic foam mounted on a spacer fabric layer which in turn is mounted on a bottom layer of visco-elastic foam.
  • Said bottom layer includes a number of air pockets which communicate with the spacer fabric layer to facilitate movement of air into and out of air pockets.
  • the bottom layer is mounted on a resilient base layer of layered foam material.
  • the mattress has a central layer in te base portion formed by a pocket spring assembly.
  • a mattress having a central layer of foam material, which layer is provided with through holes comprising springs.
  • the central foam layer is sandwiched between two layers that distribute forces and two outer sheets, which may be foamed sheets.
  • a core layer is provided which may appear to be similar to a known core layer but which is internally provided with a layer that ventilates very well, and the springs are directly activated when a pressure is exerted on the mattress, or at least on the core layer in the mattress, when a person lies on the mattress.
  • a distribution layer having pressure distribution characteristics may be provided on the top and bottom sides of the core layer.
  • Suitable materials for such a distribution layer are, for example, jute, foam exhibiting a relatively high compression resistance, felt and the like. Since said at least one inner core layer comprising relatively large cavities will provide less resistance to compression, especially if no walls are present between the cavities, the springs may provide a relatively greater reactive force against compression than in the case of a known core layer. In such a case a proper pressure distribution between the core layer and the lying surfaces is desirable.
  • the reticulated foam for said at least one inner core layer preferably comprises latex foam (foam rubber), polyester foam and/or polyurethane foam. In the past such foam materials have proved to be very suitable for use in a mattress.
  • coil springs are accommodated in the through holes.
  • the use of coil springs in mattresses is known.
  • the coil springs may be barrel-shaped, cylindrical or Diabolo-shaped, for example.
  • the appended figure shows a mattress 1 according to the present invention.
  • the mattress 1 comprises a cover 2, which provides the lying surfaces of the mattress and which protects the interior of the mattress.
  • a ventilating strip 3 of textile which functions to ventilate the mattress.
  • the ventilating strip 3 thus provides an adequate flow-through connection for air and vapour between the interior of the mattress 1 and the environment.
  • Disposed within the cover 2 are a number of layers, which determine or at least influence the characteristics of the mattress to a significant extent.
  • the mattress Seen from the cover to the centre of the mattress 1, the mattress comprises foam plates 4, cover plates 5, outer core layers 6 and an inner core layer 7. Through holes 8, in which springs 9 are accommodated, extend through the inner and outer core layers 7 and 6, respectively.
  • the foam plates 4 may be made of latex, polyurethane foam or polyester foam, for example.
  • the foam plates 4 have good resilience characteristics.
  • the cover plates 5 are provided between each foam plate 4 and the core of the mattress 1, which is formed by the core layers 6, 7 with the holes 8 and the springs 9.
  • the cover plates 5 act as pressure distributors for distributing the pressure exerted in the direction of the lying surfaces by the springs 9 in loaded condition of the mattress 1 so as to prevent a user from experiencing a non-uniform pressure of the mattress when lying on the mattress 1.
  • Disposed between the cover plates 5 is the core of the mattress 1, the middle core layer 7 of which is made of reticulated polyurethane foam.
  • the reticulated polyurethane foam is a network of ribs of hollow spaces, between which hollow spaces walls are substantially lacking. Because of this, the middle core layer 7 has a relatively high degree of elasticity, but certainly also good ventilation characteristics. In this embodiment, the middle core layer 7 is provided with an outer core layer 6 of polyurethane foam on both sides thereof. The outer core layer imparts firmness to the core of the mattress 1. Through holes 8, in which springs 9 are accommodated, extend through the inner and outer core layers 7 and 6, respectively. In this way a combined spring action is provided by the core of the mattress, consisting of the inner and outer core layers 7, 6 and the springs 9.
  • the holes 8 furthermore form ventilation channels, for example for dissipating heat and moisture (vapour) which are generated and which are absorbed by the mattress 1 when a user is lying on the mattress 1.
  • the holes 8 stimulate a vertical flow-through of air / vapour.
  • the vertical holes 8 are in communication inter alia with the inner core layer 7 of reticulated polyurethane, which thus provides an adequate ventilation in horizontal direction through the mattress. It will be understood that the mattress 1 according to the present invention provides an excellent ventilation in vertical direction from the position where a user is lying to the inner core layer 7 and subsequently through the inner core layer 7 and the ventilating strip 3 of textile.

Landscapes

  • Mattresses And Other Support Structures For Chairs And Beds (AREA)

Claims (6)

  1. Matratze (1) mit zwei Liegeflächen und einer Kernlage, die wenigstens eine innere Kernlage (7) aufweist, die sich zwischen den Liegeflächen zumindest im wesentlichen parallel zu diesen erstreckt und aus einem retikulierten Schaumstoff besteht, der mehrere Durchgangslöcher (8) aufweist, die sich durch die wenigstens eine innere Kernlage (7) zumindest im wesentlichen senkrecht zu dieser erstrecken und in denen Federn (9) aufgenommen sind, dadurch gekennzeichnet, dass die wenigstens eine innere Kernlage (7) retikulierten Schaumstoff mit verhältnismäßig großen Hohlräumen mit einer durchschnittlichen Porosität von weniger als 500 Hohlräumen pro cm3 umfasst und dass die wenigstens eine innere Kernlage (7) zwischen zwei äußeren Kernlagen (6) gelegen ist, die Latexschaum, Polyesterschaum und/oder Polyurethanschaum mit verhältnismäßig kleinen Zellen mit einer durchschnittlichen Porosität von mehr als 500 Zellen pro cm3 umfassen.
  2. Matratze nach Anspruch 1, dadurch gekennzeichnet, dass die Porosität der wenigstens einen inneren Kernlage (7) des retikulierten Schaumstoffs, der verhältnismäßig große Hohlräume umfasst, weniger als 200 Hohlräume pro cm3 beträgt.
  3. Matratze nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sich die Durchgangslöcher (8) und die Federn (9) in die äußeren Kernlagen aus retikuliertem Schaumstoff erstrecken.
  4. Matratze nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass auf der Oberseite und der Unterseite der Kernlage eine Verteilungsschicht (5) mit Druckverteilungseigenschaften vorgesehen ist.
  5. Matratze nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der retikulierte Schaumstoff für die wenigstens eine innere Kernlage (7) Latexschaum, Polyesterschaum und/oder Polyurethanschaum umfasst.
  6. Matratze nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in den Durchgangslöchern Sprungfedern (9) aufgenommen sind.
EP09000138A 2008-01-31 2009-01-08 Matratze mit einer Schicht aus retikuliertem Schaumstoff mit relativ grossen Hohlräumen Not-in-force EP2084994B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1034982A NL1034982C1 (nl) 2008-01-31 2008-01-31 Matras met laag van netwerk van grote holle ruimten.

Publications (2)

Publication Number Publication Date
EP2084994A1 EP2084994A1 (de) 2009-08-05
EP2084994B1 true EP2084994B1 (de) 2011-09-21

Family

ID=40668351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09000138A Not-in-force EP2084994B1 (de) 2008-01-31 2009-01-08 Matratze mit einer Schicht aus retikuliertem Schaumstoff mit relativ grossen Hohlräumen

Country Status (3)

Country Link
EP (1) EP2084994B1 (de)
AT (1) ATE524999T1 (de)
NL (1) NL1034982C1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2548068B (en) * 2015-10-06 2018-02-07 Hypnos Ltd A mattress
WO2017178998A1 (en) * 2016-04-14 2017-10-19 New Zealand Comfort Group Limited A mattress and method of manufacture

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1552214A (de) * 1967-11-23 1969-01-03
AU450041B2 (en) * 1967-12-15 1974-06-13 Price Brothers & Co. Ltd Improvements relating to mattresses

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2442528C3 (de) * 1974-09-05 1984-09-27 Metzeler Schaum Gmbh, 8940 Memmingen Matratze aus geschäumtem Kunststoff
WO2005077998A1 (ja) * 2004-02-17 2005-08-25 Bridgestone Corporation 低反発性高通気性ポリウレタンフォーム及びその利用
GB2454138B (en) 2006-07-18 2011-10-05 Lancastria Ltd A mattress
AU2008200388A1 (en) * 2007-01-25 2008-08-14 Australian Comfort Group Pty. Ltd. Mattress

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1552214A (de) * 1967-11-23 1969-01-03
AU450041B2 (en) * 1967-12-15 1974-06-13 Price Brothers & Co. Ltd Improvements relating to mattresses

Also Published As

Publication number Publication date
EP2084994A1 (de) 2009-08-05
ATE524999T1 (de) 2011-10-15
NL1034982C1 (nl) 2009-08-03

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