WO2016015770A1

WO2016015770A1 - Support body and method for producing a support body

Info

Publication number: WO2016015770A1
Application number: PCT/EP2014/066509
Authority: WO
Inventors: Gerd-Hermann Horst; Karl Rametsteiner
Original assignee: Bodet & Horst Gmbh & Co. Kg
Priority date: 2014-07-31
Filing date: 2014-07-31
Publication date: 2016-02-04

Abstract

The invention relates to a support body (1), in particular a mattress, a seat or reclining support, comprising a foam layer (2) coated with a cooling gel layer (3), wherein the cooling gel layer (3) covers a partial surface of the foam layer (2), the cooling gel layer (3) being designed as a silicone gel layer. The invention further relates to a method for producing a support body (1).

Description

Support body and method for producing a support body

The present invention relates to a support body, in particular a mattress, sitting or lying support according to the preamble of claim 1 and a method for producing a support body.

Generic support bodies consist essentially of a foam layer, which are coated with a gel, the gel contributes due to its good three-dimensional pressure distribution properties to increase sleeping comfort or comfort.

In order to avoid physiologically undesirable heat build-up, a mattress, cushion, seat cover or the like is known, for example from WO 2013/076 661 A1, with a gel layer which is connected to at least one further layer of a further material, for example a foam layer. The gel layer and the foam layer are provided with through holes to allow air to circulate from one side of the mattress to the other side.

The gel layer is preferably a polyurethane gel (PUR gel) or a thermoplastic elastomer (TPE).

A disadvantage of this designed as a mattress, cushion, seat cover or the like support elements is still their poor airtightness and the resulting diffusion barrier, which deteriorates the sitting or lying comfort and which is partially remedied here by the fact that the gel layer and the underlying Layer is provided with through openings through which air can circulate.

PUR gels are formed as the reaction product of selected polyols and isocyanates with the catalysis of tertiary amines and / or tin compounds, as disclosed, for example, in US Pat. No. 5,362,834.

Both substance classes are regarded as physiologically problematic and can lead to dermatological irritations and damage if they are used for prolonged periods close to the body. This is especially true in sleep conditions where a user's body is one of the above mattress 8h / day with the mattress is in contact.

The object of the present invention is therefore to provide a support body, in particular a mattress, seat or couch support and a method for producing such a support body, with which the abovementioned disadvantages are eliminated and with which an improved cooling effect can be achieved.

This object is achieved by a support body, in particular a mattress, sitting or lying support with the features of claim 1 and by a method for producing a support body having the features of claim 16.

In the support body according to the invention, the gel layer is formed as a cooling gel layer consisting of silicone gels.

Such silicone gels are characterized in particular by their resistance to sweat, detergents, water and their physiological safety.

As a cooling gel is here a consisting of a three-dimensionally crosslinked in a liquid solid structure existing, which behaves under pressure substantially as a liquid in which according to the pressure load evenly distributed in the structure and which has a good Wärmeleitfähig- speed, relative for the thermal conductivity of foams. The good thermal conductivity of the cooling gel causes a physiological pleasant cooling effect.

Advantageous embodiments of the invention are the subject of the subclaims.

According to an advantageous embodiment of the invention, the cooling gel layer is formed as a printed on the foam layer, aufgerakelte or applied by transfer printing Kühlgelschicht.

All of these coating techniques are characterized by the fact that they can be individually adapted to desired requirements, in particular with regard to the layer thickness. The cooling gel layer covers according to a further advantageous embodiment, at most 50% of the foam layer to increase the air permeability of the support body.

According to a further preferred embodiment of the invention, the cooling gel layer consists of a plurality of non-related individual segments with a circular, oval or polgon cross section, wherein the diameter of the individual segments is preferably between 0.5mm and 5mm.

According to a further embodiment variant of the invention, the amount of cooling gel layer applied to the foam layer is between 50 g / m ² and 2000 g / m ² , more preferably between 1 00 g / m ² and 300 g / m ² .

The distribution of the cooling gel layer amounts is particularly preferably carried out in locally different quantities.

According to a further advantageous embodiment of the invention, the cooling gel layer consists of liquid silicone and already crosslinked spherical silicone rubber.

An advantage of this variant is the ability to adjust the viscosity by system-related polymers (silicones). As a result, the typical advantageous silicone properties (resistance to perspiration, detergents, water and their physiological harmlessness) are not adversely affected.

An increased viscosity leads to a reduction of the penetration depth into the foam and at the same time allows the construction of a larger layer thickness

while maintaining the desired clearances on the foam layer.

According to a further advantageous embodiment of the invention, the cooling gel layer contains infrared radiation reflecting or absorbing pigments and / or pigments and fillers which increase the thermal conductivity, such as hexagonal boron nitride (hBN), carbon nanotubes (CNT), graphite, or Metal pigments and / or additives of heat-absorbing phase reversal additives (PCM) to further increase the desired cooling effects.

In the method according to the invention for producing such a support body, a liquid forming the cooling gel layer is applied to at least a portion of the foam layer.

The coating of the foam layer takes place by printing, doctoring or by transfer printing.

Subsequently, the liquid forming the cooling gel is solidified into an insoluble elastic cooling gel layer, so that the cooling gel layer is firmly bonded to the foam layer. The solidification of the cooling gel layer forming liquid is preferably carried out by heat, under the influence of a cross-linking of the cooling gel layer forming liquid.

According to an alternative embodiment, the solidification takes place by crosslinking of the liquid forming the cooling gel layer by means of catalyst systems, preferably based on platinum.

In order to influence the penetration depth of the liquid forming the cooling gel layer into the foam layer, according to a further preferred embodiment variant of the method according to the invention, the viscosity of the liquid forming the cooling gel layer is corrected such that a penetration depth of the liquid forming the cooling gel layer into the foam layer is preferably 0.2 mm to 5mm, more preferably 0.5mm to 2mm. By varying the penetration depth of the liquid forming the cooling gel layer, for example, massage effects can be achieved while lying or sitting.

For use in coating a foam, organogels with silicone as base polymer are used as cooling gel.

Suitable cooling gel liquids are, in particular, undercrosslinked silicones which, after application to the foam, are replaced by a chemical Crosslink gel reaction and optionally additionally made soft with polysiloxane - oligomers.

Depending on the pore size of the foam material forming the foam layer, the amount of the applied cooling gel liquid is varied in order to allow the application of a non-surface coating. The range of variation of the amount of Kühlgelflüssigkeit lies in particular between 50 g / m ² and 2000g / m ^2, preferably between 100g / m ² and 300g / m ^2. In addition, the silicone gel fragments can promote through ventilation, through continuous pores or cracks.

By the choice of suitable pigments or fillers, finely divided phyllosilicates, such as bentonite or fumed silica, which are mixed into the fluid forming the cooling gel to form void-producing defects in the cooling gel layer prior to applying the cooling gel-forming liquid to the foam, the Pore and / or cracking of the gel layer are additionally controlled. Hereinafter, an embodiment of the invention will be explained in more detail with reference to the accompanying drawings. It shows:

Figure 1 is a schematic representation of an embodiment of a support body according to the invention with a foam layer and a cooling gel layer connected thereto.

In the following description of the figures, terms such as top, bottom, left, right, front, back, etc. refer exclusively to the exemplary representation and position of the support body, the cooling gel layer, the foam layer and the like chosen in the figure. These terms are not intended to be limiting, that is, by different working positions or mirror-symmetrical designs or the like, these references may change. In the figure 1 is designated by the reference numeral 1 a total of one embodiment of a support body according to the invention. The support body 1 has at least one foam layer 2 and a cooling gel layer 3. The Foam layer preferably consists of a porous foam body, for example of a polyurethane.

The foam layer 2 can, as shown in FIG. 1, be provided with the cooling gel layer 3 only on a top side 21.

It is also conceivable, however, to provide the foam layer 2 with a cooling gel layer 3, for example, on both sides on the upper side 21 and the foam layer surface facing away from it.

It is also conceivable, on a side facing away from the cooling gel layer, to attach a third layer of a material which is harder in comparison to the foam layer 2. The cooling gel layer 3 is here applied to the foam layer 2 in the form of a plurality of free-standing individual segments. The sum of the individual layers of the cooling gel layer 3, the foam layer 2 covering area is at most 50% of the surface of the foam layer 2, on which the cooling gel layer 3 is applied.

The individual segments of the cooling gel layer 3 preferably have a circular, oval or polygonal cross section.

As can also be seen in FIG. 1, the individual segments of the cooling gel layer 3 penetrate into the foam layer 2 at a penetration depth d. Depending on the depth of penetration of the cooling gel layer 3 into the foam layer 2, this makes it possible, for example in the case of a support body in the form of a mattress, to achieve a massaging effect. The variation of the penetration depth of the cooling gel layer 3 into the foam layer 2 can be varied by adjusting the viscosity of the liquid forming the cooling gel layer 3, as has already been described above.

The application of the cooling gel layer 3 to the foam layer 2 then takes place according to a preferred embodiment by knife-coating, wherein the liquid forming the cooling gel layer 3 is doctored onto the foam layer 2 by means of an air knife or a roll doctor blade. The solidification of the cooling gel layer 3 forming liquid is preferably carried out by heat or by means of catalyst systems, preferably based on platinum catalyst systems. Alternatively, the cooling gel layer 3 can also be applied to the foam layer 2 by the screen printing method or by the transfer printing method.

It is important to use silicone gels to form the cooling gel layer 3, which, in particular when using the support body as a mattress, sitting or lying supports, has advantageous properties with regard to its physiological safety and resistance to sweat, detergents, water and the like.

Claims

claims

1 . Supporting body (1), in particular mattress, sitting or lying support, comprising a layer of foam coated with a gel layer (2), wherein the gel layer covers a partial surface of the foam layer (2), characterized in that the gel layer consists of a cooling gel layer (3) consisting of silicone gels is trained.

2. Support body (1) according to claim 1, characterized in that the cooling gel layer (3) as on the foam layer (2) printed, aufgerakelte or applied by transfer pressure cooling gel layer (3) is formed.

3. Support body (1) according to claim 1 or 2, characterized in that the cooling gel layer (3) covers at most 50% of the foam layer (2).

4. supporting body (1) according to any one of the preceding claims, characterized in that the cooling gel layer (3) consists of a plurality of free-standing individual segments.

5. supporting body (1) according to claim 4, characterized in that the

Individual segments have a circular, oval or polygonal cross-section. 6. support body (1) according to claim 4 or 5, characterized in that the individual segments have a diameter between 0.5mm and 5mm.

7. supporting body (1) according to any one of the preceding claims, character- ized in that the amount of the foam layer (2) applied cooling gel layer (3) between 50g / m ² and 2000 g / m ² , preferably between 100g / m ² and 300 g / m ² .

Supporting body (1) according to one of the preceding claims, characterized ge

indicates that the cooling gel layer (3) in locally different

Quantities on the foam layer (2) is applied.

9. supporting body (1) according to any one of the preceding claims, characterized in that the penetration depth of the cooling gel layer (3) in the foam layer (2) between 0.2mm and 5mm, preferably between 0.5mm and 2mm.

10. supporting body (1) according to any one of the preceding claims, characterized in that the cooling gel layer (3) consists of liquid silicone and already crosslinked spherical silicone rubber. 1 1. Supporting body (1) according to one of the preceding claims, characterized in that the cooling gel layer (3) contains infrared radiation-reflecting or absorbing pigments.

12. supporting body (1) according to any one of the preceding claims, character- ized in that the cooling gel layer (3) pigments and fillers, which increase the thermal conductivity, preferably hexagonal boron nitride (hBN), carbon nanotubes (CNT), graphite or metal pigments.

13. Support body (1) according to one of the preceding claims, character- ized in that the cooling gel layer (3) contains additives of heat-absorbing Phasenumkehradditiven.

14. supporting body (1) according to any one of the preceding claims, characterized in that the air permeability of the cooling gel layer (3) 20% to 95%, preferably 30% to 60% of the air permeability of the foam layer (2) without cooling gel applied thereto (3, 5 ) is.

15. supporting body (1) according to any one of the preceding claims, characterized in that silicone gel fragments of the cooling gel layer (3) has pores or cracks.

16. A process for producing a support body (1), in particular a mattress, seat or couch support, with a foam layer (2) and a cooling gel layer (3) formed from silicone gels, with the method steps: a. Applying a liquid forming the cooling gel (3) to at least one partial area of the foam layer (2) by printing, or by transfer printing, b. Solidifying the liquid forming the cooling gel (3) into an insoluble, elastic cooling gel layer (3).

17. The method of claim 16, wherein the solidification by crosslinking of the cooling gel (3) by means of heat application takes place.

18. The method of claim 16, wherein the solidification by crosslinking of the cooling gel (3) by means of catalyst systems, preferably based on platinum occurs.

19. The method according to any one of claims 16 to 18, wherein for adjusting the penetration depth of the cooling gel (3) forming liquid in the foam layer (2) the viscosity of the cooling gel (3) forming liquid is varied.