WO2009111822A1 - A mattress - Google Patents

A mattress Download PDF

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Publication number
WO2009111822A1
WO2009111822A1 PCT/AU2009/000281 AU2009000281W WO2009111822A1 WO 2009111822 A1 WO2009111822 A1 WO 2009111822A1 AU 2009000281 W AU2009000281 W AU 2009000281W WO 2009111822 A1 WO2009111822 A1 WO 2009111822A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
mattress
cover
spacer
comfort
Prior art date
Application number
PCT/AU2009/000281
Other languages
French (fr)
Inventor
Allyn Beard
Original Assignee
A.H. Beard Pty Ltd
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
Priority to AU2008901189A priority Critical patent/AU2008901189A0/en
Priority to AU2008901189 priority
Application filed by A.H. Beard Pty Ltd filed Critical A.H. Beard Pty Ltd
Publication of WO2009111822A1 publication Critical patent/WO2009111822A1/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C21/00Attachments for beds, e.g. sheet holders, bed-cover holders; Ventilating, cooling or heating means in connection with bedsteads or mattresses
    • A47C21/04Devices for ventilating, cooling or heating
    • A47C21/042Devices for ventilating, cooling or heating for ventilating or cooling
    • A47C21/046Devices for ventilating, cooling or heating for ventilating or cooling without active means, e.g. with openings or heat conductors
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C27/00Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/15Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays consisting of two or more layers
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C31/00Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/006Use of three-dimensional fabrics
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C31/00Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/10Loose or removable furniture covers

Abstract

A mattress (1) comprises a mattress body (6) and mattress cover (5) located over the mattress body (6) with, the sleep panel (7) of the cover (5) covering the upper surface of the mattress body (6). The mattress body (6) comprises a comfort layer (13) disposed beneath the sleep panel (7) and a resilient support layer (3) disposed beneath the comfort layer (13). The sleep panel (7) has an upper cover layer (9) formed of a breathable fabric and a lower cover layer (10) also formed of a breathable fabric. A resilient and highly breathable three-dimensional spacer layer (12) is disposed between the upper and lower cover layers (9, 10). The upper cover layer (9), spacer layer (11) and lower cover layer (10) are secured together by quilting or tufting. The cover (5) is removeable.

Description

A MATTRESS

Technical Field

The present invention relates to a mattress, and a mattress cover therefor.

Background of the Invention

The use of comfort layers in mattresses has arisen in recent years due to the comfortable support provided. Such comfort layers are typically formed of latex, visco- elastic foam or other flexible high density, high resilience foams. In the field of bedding, high density foams are usually regarded as those having a density of 20 to 100kg/m3, with low density foams generally having a density of 10 to less than 20kg/m3. In the context of the present specification, the term "high density" has this meaning. High resilience foam grades are generally high density foams in which the cell structure has been broken down to form a generally "open cell" construction which is more resilient than the closed cell structure.

These comfort layers are typically provided above another, typically more resilient and harder, support layer to allow a person lying on the bed to sink into the comfort layer, distributing pressure more evenly across the person's body, whilst still retaining support from the underlying support layer. Visco-elastic foam support layers have gained particular popularity as a result of their temperature sensitivity whereby they become softer when heated by body heat and consequently generally mould to the form of the body, distributing pressure more evenly. Visco-elastic foam is also referred to as "memory foam", and is generally a form of flexible polyurethane foam.

Visco-elastic foam and latex support layers, however, are generally unable to readily dissipate heat from the person's body and, given that there is generally a greater area of surface contact between the person's body and the moulded upper surface of the mattress, mattresses with such comfort layers are often found to be uncomfortably hot to sleep on.

Mattress structures have previously been proposed that include a resilient, highly breathable spacer layer below the comfort layer to assist in dissipating heat from the comfort layer by maintaining an air space between the comfort layer and underlying support layer. Such a structure, however, relies on the heat dissipating through the thickness of the comfort layer prior to escaping via the spacer layer.

Mattress structures have also been proposed that utilise a spacer layer laminated to the top surface of the comfort layer in an effort to dissipate heat from the person's body prior to reaching the comfort layer. Such structures, however, do not provide for washability of the spacer layer and do not allow for retrofitting to existing mattresses with visco-elastic foam or latex comfort layers that have been found to be uncomfortable due to overheating.

Object of the Invention

It is the object of the present invention to substantially overcome or at least ameliorate one or more of the above disadvantages.

Summary of the Invention

In a first aspect, the present invention provides a mattress cover comprising a sleep panel configured to cover an upper surface of a mattress body, said sleep panel comprising: an upper cover layer formed of a breathable fabric; a lower cover layer formed of a breathable fabric; and a resilient and highly breathable three-dimensional spacer layer disposed between said upper and lower cover layers; wherein said upper cover layer, said spacer layer and said lower cover layer are secured by quilting or tufting; further wherein said cover is removeable.

Typically, said mattress cover further comprises a peripheral skirt extending about a periphery of said sleep panel for engaging side surfaces of the mattress body.

In one form, said spacer layer comprises a pair of spaced apart outer mesh elements interconnected by an array of spacer yarns extending between and separating said outer mesh elements.

Alternatively, said spacer layer may be formed of an open-cell reticulated foam.

In one form, said spacer layer is separated into multiple zones of varying resilience.

In a second aspect, the present invention provides a mattress comprising: a mattress body; and the mattress cover defined above located over said mattress body with said sleep panel covering an upper surface of said mattress body; wherein said mattress body comprises: a comfort layer disposed beneath said sleep panel; and a resilient support layer disposed beneath said comfort layer. Typically, said comfort layer comprises a high density, high resilience foam. In particular embodiments, said comfort layer is formed of visco-elastic foam. Alternatively, said comfort layer may be formed of latex.

In a third aspect, the present invention provides a mattress comprising: a resilient support layer; a resilient and highly breathable three-dimensional lower spacer layer disposed above said support layer; a comfort layer disposed above said lower spacer layer, said comfort layer having a plurality of perforations extending through a thickness thereof; a resilient and highly breathable three-dimensional upper spacer layer disposed above said comfort layer; a breathable upper cover layer disposed above said upper spacer layer.

Typically, said comfort layer comprises a high density, high resilience foam. In particular embodiments, said comfort layer is formed of visco-elastic foam. Alternatively, said comfort layer may be formed of latex.

In one form, said spacer layers each comprise a pair of spaced apart outer mesh elements interconnected by an array of spacer yarns sitting between and separating said outer mesh elements.

Alternatively, said spacer layers may be formed of an open-cell reticulated foam. In one form, said upper spacer layer is separated into multiple zones of varying resilience.

Typically, said lower spacer layer is laminated to said comfort layer.

Brief Description of the Drawings Preferred embodiments of the present invention will now be described, by way of an example only, with reference to the accompanying drawings wherein: Figure 1 is an exploded view of a mattress;

Figure 2 is a further exploded perspective view of Figure 1 with individual layers of each panel laminated; and Figure 3 is a fragmentary cross-sectional view of the mattress of Figure 1.

Detailed Description of the Preferred Embodiments

Referring to the accompanying drawings, a mattress 1 comprises a base layer 2, support layer 3, intermediate panel 4, and cover 5. The cover 5 defines the upper face of the mattress 1 forming a sleep surface. The base layer 2 defines the lower face of the mattress which will typically be located on a mattress foundation. The support layer 3 and intermediate panel 4 together define the mattress body 6 and are located between the cover 5 and base layer 2.

The cover 5 comprises a sleep panel 7 configured to cover the upper surface of the mattress body 6 and a peripheral skirt 8 extending about a periphery of the sleep panel 7 for engaging the side surfaces of the mattress body 6. Referring specifically to Figure 3, the sleep panel 7 comprises an upper cover layer 9 formed of a breathable fabric and a lower cover layer 10 also formed of a breathable fabric. The breathable fabric may be either knitted or woven and may, for example, be a stretchable velour fabric. A resilient and highly breathable three-dimensional upper spacer layer 12 is disposed between the upper and lower cover layers 9, 10. The upper cover layer 9, upper spacer layer 11 and lower cover layer 10 are secured together by quilting, so as to form a quilted sleep surface as depicted in Figure 1 Alternatively, it is envisaged that the upper cover layer 9, upper spacer layer 11 and lower cover layer 10 might be secured by tufting. The upper spacer layer 11 is typically formed of a three dimensional fabric having a pair of spaced apart outer mesh elements interconnected by an array of spacer yarns (alternatively referred to as loop piles) extending between and separating the outer mesh elements. A particularly suitable three dimensional fabric for forming the spacer layer is Space Flex® spacer fabric manufactured by Pressless GmbH of Falkenau, Germany. The upper spacer layer 11 will typically have a thickness of about 15 to 40mm. The upper spacer layer 11 may be separated into multiple zones of varying resilience by varying the spacing (or properties) of the spacer yarns in each zone. For example, a central zone extending laterally across the mattress, generally in the area of the torso of a person lying on the mattress, may be formed of a more resilient spacer layer, whilst the opposing head and leg ends of the mattress may be formed with a spacer layer of lower resilience.

Accordingly, such a central zone would provide additional support to the heavier torso of the person's body.

As an alternative to the three dimensional fabric of the spacer layer, a breathable open-cell reticulated foam material may be utilised, as is available from Joyce Foam Products of Moorebank, New South Wales, Australia.

The peripheral skirt 8 is typically formed of a fabric material, conveniently the same material as the upper cover layer 9. The upper edge of the skirt is stitched to the sleep panel 17. The lower edge of the peripheral skirt 8 will typically be secured to the periphery of the base 2 by way of a zipper 12. The intermediate panel 4 here comprises a comfort layer 13 that is generally formed of a high density, high resilience foam. The comfort layer 13 may be formed of a flexible polyurethane foam. The flexible polyurethane foam may be a visco-elastic foam, typically having a density of between 40 and 100kg/m3. Alternatively, the comfort layer 13 may be formed of other types of high resilience flexible polyurethane foam having a density of between 25 and 50kg/m3. In other forms, the comfort layer 13 may be formed of latex, which may either be Talalay or Dunlop process latex (sometimes referred to as a latex foam). To improve the breathability of the comfort layer 13, allowing any residual heat that has passed through the upper spacer layer 11 to pass through, a series of pin hole perforations 14 may be provided, extending through the thickness of the comfort layer 13. The perforations 14 will generally be provided when the comfort layer 13 is formed of latex but they are also applicable to other compositions of comfort layer 13. The comfort layer 13 will typically have a thickness of about 50 to 100mm.

The intermediate panel 4 also includes a resilient and highly breathable three- dimensional lower spacer layer 15. The lower spacer layer 15 will typically be laminated to the comfort layer 13. The lower spacer layer 15 may be formed of the same material as the upper spacer layer 11. The lower spacer layer 15 will typically have a thickness of about 10 to 30mm. The lower spacer layer 15 enables any heat that has dissipated through the comfort layer 13 to be readily dissipated by maintaining an air layer separating the comfort layer 13 from the layers lying beneath. The lower spacer layer 15 may be configured as a firmer layer than the upper spacer layer 11, so that the lower spacer layer 15 will contribute more to supporting a person lying on the mattress 1 while the upper spacer layer 11 will contribute more to comfort. In particular embodiments, the firmer lower spacer layer 15 may have a compressive elastic modulus of about 11 to 15 kPa, with the upper spacer layer 11 having a compressive elastic modulus of about 2 to 10 kPa.

The intermediate panel 4 will typically further comprise a lower layer 16 that is laminated to the underside of the lower spacer layer 15. The lower layer 16 is typically formed of a high density flexible polyurethane foam having a density of about 25 to 50 kg/m3. The lower layer 16 will typically have a thickness of about 20 to 40mm, The lower layer 16 provides a foundation for the lower spacer layer 15 and comfort layer 13 and adds both extra comfort and support. The lower layer 16 also generally confines the lower spacer layer 15, which when configured as a spacer fabric can be a little coarse and may have its ends otherwise sticking through the skirt 8 of the cover 5. The support layer 3 is here formed of two separate support cores 17, 18 formed of high resilience flexible polyurethane foam having a density of about 25 to 50 kg/m3. The support cores 17, 18 may alternatively be formed of latex, such as Talalay process latex foam or Dunlop process latex. The support cores 17, 18 will typically each have a thickness of about 100 to 200mm. The support cores 17, 18 maybe configured with different hardness materials so as to provide different support on the two opposing sides of the mattress 1 to satisfy the desires of two individuals lying on the mattress. For example, one support core 17 may be configured with a particularly firm support core 17, while the other support core 18 may be configured with a softer material. The support cores 17, 18 are not laminated to the lower layer 16 and as such may be readily replaced as desired if the firmness requirements of persons using the bed change over time. Forming the support cores 17, 18 separately also enables production of mattresses with varying hardness properties merely by utilising varying hardness support cores.

The side surfaces of the mattress body 6 are defined by the edges of the support layer 3 and intermediate panel 4. So as to maintain a neat side surface in the event that there is some minor relative displacement between the support layer 3 and intermediate panel 4, additional foam elements may be located within the skirt 8 adjacent the edges of the mattress body 6. The individual elements of the mattress body 6, being the support cores 17, 18 and intermediate panel 4 may be covered in a dust-mite resistant barrier fabric so as to render the mattress 1 particularly suitable to asthma and other allergy sufferers.

The base layer 2 is typically formed of a fabric material and serves to enclose the mattress body 6 with the cover 5 that is secured to the base layer 2 by way of a zipper 12 as discussed above. In use, heat generated by the body of a person lying on the mattress may firstly be dissipated by the air layer provided by the upper spacer layer 11, separating the person's body from the comfort layer 13. Whilst the upper spacer layer 11 provides for dissipation of heat, some residual heat is likely to penetrate through to the comfort layer 13. The perforations 14 extending through the thickness of the comfort layer 13 provide passages for heat to dissipate through the thickness of the comfort layer 13 and then out of the mattress body 6 via the air gap provided by the lower spacer layer 15. Embodying the upper spacer layer 11 within the sleep panel 7 of the cover 5 provides for removal and washing of the upper spacer layer 11 (within the cover 5). This structure also allows for retrofitting of the spacer layer 11 embodied within the cover 5, to mattresses having visco-elastic foam or latex comfort layers that have previously been purchased, typically at significant expense, without the need to discard the mattress.

Claims

CLAIMS:
1. A mattress cover comprising a sleep panel configured to cover an upper surface of a mattress body, said sleep panel comprising: an upper cover layer formed of a breathable fabric; a lower cover layer formed of a breathable fabric; and a resilient and highly breathable three-dimensional spacer layer disposed between said upper and lower cover layers; wherein said upper cover layer, said spacer layer and said lower cover layer are secured by quilting or tufting; further wherein said cover is rerhoveable.
2. The mattress cover of claim 1 , further comprising a peripheral skirt extending about a periphery of said sleep panel for engaging side surfaces of the mattress body.
3. The mattress cover of claim 1, wherein said spacer layer comprises a pair of spaced apart outer mesh elements interconnected by an array of spacer yarns extending between and separating said outer mesh elements.
4. The mattress cover of claim 1 , wherein said spacer layer is formed of an open-cell reticulated foam.
5. The mattress cover of claim 1, wherein said spacer layer is separated into multiple zones of varying resilience.
6. A mattress comprising: a mattress body; and the mattress cover of claim 1 located over said mattress body with said sleep panel covering an upper surface of said mattress body; wherein said mattress body comprises: a comfort layer disposed beneath said sleep panel; and a resilient support layer disposed beneath said comfort layer.
7. The mattress of claim 6, wherein said comfort layer comprises a high density, high resilience foam.
8. The mattress of claim 6, wherein said comfort layer is formed of visco- elastic foam.
9. The mattress of claim 6, wherein said comfort layer is formed of latex.
10. A mattress comprising: a resilient support layer; a resilient and highly breathable three-dimensional lower spacer layer disposed above said support layer; a comfort layer disposed above said lower spacer layer, said comfort layer having a plurality of perforations extending through a thickness thereof; a resilient and highly breathable three-dimensional upper spacer layer disposed above said comfort layer; a breathable upper cover layer disposed above said upper spacer layer.
11. The mattress of claim 10, wherein said comfort layer comprises a high density, high resilience foam.
12. The mattress of claim 10, wherein said comfort layer is formed of visco- elastic foam.
13. The mattress of claim 10, wherein said comfort layer is formed of latex.
14. The mattress of claim 10, wherein said spacer layers each comprise a pair of spaced apart outer mesh elements interconnected by an array of spacer yarns sitting between and separating said outer mesh elements.
15. The mattress of claim 10, wherein said spacer layers are formed of an open-cell reticulated foam.
16. The mattress of claim 10, wherein said upper spacer layer is separated into multiple zones of varying resilience.
17. The mattress of claim 10, wherein said lower spacer layer is laminated fort layer.
PCT/AU2009/000281 2008-03-11 2009-03-10 A mattress WO2009111822A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2008901189A AU2008901189A0 (en) 2008-03-11 A mattress
AU2008901189 2008-03-11

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NZ58787009A NZ587870A (en) 2008-03-11 2009-03-10 A remoavble mattress cover with a sleep panel with breathable fabric layers
AU2009225238A AU2009225238A1 (en) 2008-03-11 2009-03-10 A mattress
US12/879,114 US20110047710A1 (en) 2008-03-11 2010-09-10 Mattress

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/879,114 Continuation US20110047710A1 (en) 2008-03-11 2010-09-10 Mattress

Publications (1)

Publication Number Publication Date
WO2009111822A1 true WO2009111822A1 (en) 2009-09-17

Family

ID=41064660

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2009/000281 WO2009111822A1 (en) 2008-03-11 2009-03-10 A mattress

Country Status (4)

Country Link
US (1) US20110047710A1 (en)
AU (1) AU2009225238A1 (en)
NZ (1) NZ587870A (en)
WO (1) WO2009111822A1 (en)

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Also Published As

Publication number Publication date
NZ587870A (en) 2012-05-25
AU2009225238A1 (en) 2009-09-17
US20110047710A1 (en) 2011-03-03

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