KR102691222B1 - Sleeping mattress assembly including hard and thin cushion mat, bed including the same and cushion mat therefor - Google Patents

Abstract

A cushion mat capable of providing a comfortable sleeping state while having a thinner thickness than before, a sleeping mattress assembly including the same, and a bed including the same are provided. The mattress assembly includes a spring mat including a plurality of springs; And a cushion mat disposed on the spring mat, wherein the cushion mat has a tensile strength of 10.0 MPa to 35.0 MPa, a tensile stress (100% modulus) of 2.5 MPa to 5.0 MPa, and a tensile strength of 50.0 to 80.0. Contains polymers with Shore A Hardness.

Description

Sleeping mattress assembly including a hard and thin cushion mat, a bed including the same, and a cushion mat for the same

The present invention relates to a sleeping mattress assembly and a bed including the same. In detail, it relates to a cushion mat that can provide a comfortable sleeping state while having a thinner thickness than the conventional one, a sleeping mattress assembly including the same, and a bed including the same.

A bed is a general term for furniture on which a person can lie down and sleep comfortably. Because each person's sleeping position is different, the bed is required to stably support the curves of the sleeping person's body. For example, when sleeping in an upright position while looking at the ceiling, the curves of the lower back and hips formed by the human spine must be naturally supported to avoid causing back pain. For another example, if you sleep on your side, you need to support the curves of your neck, shoulders, and lower back.

For this reason, beds are being researched and developed to provide cushioning and comfort to the user by providing a mattress assembly that can be deformed according to the curves of the user's body, while minimizing the burden and pressure on the spine, muscles, and nervous system.

KR 10-1760727 B1

A mattress assembly for a bed (or a mattress assembly for sleeping) may include a spring mat (or spring layer) and a cushion mat (or cushion layer) placed on the spring mat.

At this time, the spring mat includes a plurality of springs arranged to be stretchable and deformable independently of each other, and deforms according to the curves of the user's body, primarily supporting the user's body locally and providing a soft cushioning feeling.

In addition, cushion mats are mainly used to complement the cushioning provided by the spring as above and at the same time cover the hard texture of the spring. Conventionally, polyurethane-based sponges are used as cushion mats.

Polyurethane-based polymers have high compressibility and/or compressive strain. Therefore, as described above, it needs to be provided with a considerable thickness in order to hide the feeling of heterogeneity caused by the spring at the bottom. Accordingly, the thickness of conventional spring mats is usually provided at a minimum of 4.0 cm or more. Since the degree of cushion desired is different depending on the user, the cushion mat is sometimes provided at 10.0 cm or more, and in some cases, 15.0 cm or more in thick cases. However, due to the physical properties of polyurethane as described above, some problems still remain.

First, the resilience of cushion mats using polyurethane polymers decreases during the repeated process of compression and restoration, and the so-called mat peeling (or cushion peeling) phenomenon sometimes occurs. That is, as the compressed cushion mat is not restored and remains in a compressed state, it does not provide sufficient cushioning as in the initial state and causes discomfort to the user. For this reason, even though the spring mat, which accounts for a relatively high portion of the manufacturing cost of the mattress assembly, maintains sufficient durability, replacement of the entire mattress assembly is sometimes required due to damage to the cushion mat.

One of the other problems is the so-called cushion independence problem. As described above, each of the plurality of springs of the spring mat forms one sector on a plane and can be stretched and deformed approximately independently of each other. At this time, when one spring is compressed, whether or not other adjacent springs are compressed together, or the degree to which they are compressed, is referred to as cushion independence. Springs require smooth stretching and deformation to naturally support the curves of the user's body, but if springs in other parts of the body are compressed together, they cannot support the body stably, putting a burden on the spine, etc., as well as causing damage to the bed. It can give a feeling of rolling around, or in severe cases, it can even cause motion sickness.

At this time, the present inventor discovered that the independence of the cushion was correlated with the thickness of the cushion mat placed on the spring mat in the stacking direction, and came to complete the present invention. That is, as described above, when polyurethane-based polymer is used as a cushion mat material, a cushion mat thickness of at least 4.0 cm or more is required, and as a result, the independence of the cushion may be reduced. This may be due to bending stress, tensile stress, compressive stress, etc. that act inside the cushion mat when the cushion mat is compressed and deformed. However, the present invention is not limited to any theory. no.

From the perspective of the inventor of the present invention, it is understood that when a force in the direction of gravity, that is, in the direction of compression, is applied, the higher the thickness of the cushion mat, the greater the horizontal stress is applied. In addition to the independence of the cushion depending on the thickness of the cushion mat, the independence of the cushion is thought to be reduced due to limitations in the physical properties of the material itself, such as the low tensile strength, tensile modulus, and low elongation of the polyurethane polymer.

Accordingly, the problem to be solved by the present invention is to provide a cushion mat using a new material to overcome the limitations of physical properties when using a conventional polyurethane-based polymer material as a cushion mat for a mattress assembly.

Another problem to be solved by the present invention is to provide a mattress assembly including the above cushion mat.

Another problem to be solved by the present invention is to provide a bed including the above mattress assembly.

The problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below.

A mattress assembly according to an embodiment for solving the above problem includes a spring mat including a plurality of springs; And a cushion mat disposed on the spring mat, wherein the cushion mat has a tensile strength of 10.0 MPa to 35.0 MPa, a tensile stress (100% modulus) of 2.5 MPa to 5.0 MPa, and a tensile strength of 50.0 to 80.0. Contains polymers with Shore A Hardness.

The polymer may have an elongation of 300% to 1,000%.

Additionally, it may have a compression ratio of 10% to 20% (ASTM D395, @100°C).

The polymer may have a density of 0.85 g/cm ³ to 0.99 g/cm ³ .

The thickness of the cushion mat in the stacking direction may be in the range of 1.0 mm to 15 mm.

The cushion mat may be arranged to at least partially cover a side of the spring mat.

Additionally, the mattress assembly may be integrated by combining a plurality of layers including the spring mat and the cushion mat.

Additionally, the mattress assembly may further include a cover layer surrounding the spring mat and cushion mat.

At this time, the cushion mat may be located on the uppermost layer of the mattress assembly excluding the cover layer.

The cushion mat is made of acrylonitrile-butadiene elastomer, styrene-butadiene-styrene (tri)block copolymer, and styrene-(ethylene-butylene)-styrene block. It may include a copolymer (styrene-(ethylene-butylene)-styrene (tri)block copolymer) or a polyvinyl acetate copolymer (ethylene-vinyl acetate copolymer).

Specific details of other embodiments are included in the detailed description.

According to embodiments of the present invention, the cushion mat of the mattress assembly has relatively high strength, hardness, and modulus, thereby minimizing the decrease in independence of the cushion. Therefore, it provides comfort to the user and at the same time stably supports the body's curves, reducing the burden and pressure on the spine, muscles, and nervous system.

In addition, it is possible to provide a cushion mat with a relatively low compression rate and thin thickness, preventing the spring texture of the spring mat from being transmitted to the user, further increasing the independence of the cushion, and at the same time minimizing the problem of cushion coming off due to long-term use. there is.

Effects according to embodiments of the present invention are not limited to the contents exemplified above, and further various effects are included in the present specification.

Figure 1 is an exploded perspective view of a mattress assembly according to an embodiment of the present invention.
Figure 2 is an enlarged perspective view of the spring mat of Figure 1.
Figure 3 is an image showing the results according to Experimental Example 1.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms, and only the embodiments serve to ensure that the disclosure of the present invention is complete, and those skilled in the art It is provided to fully inform the person of the scope of the invention, and the present invention is only defined by the scope of the claims. That is, various changes may be made to the embodiments presented by the present invention. The embodiments described below are not intended to limit the embodiments, but should be understood to include all changes, equivalents, and substitutes therefor.

The size, thickness, width, length, etc. of components shown in the drawings may be exaggerated or reduced for convenience and clarity of explanation, so the present invention is not limited to the form shown.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used with meanings that can be commonly understood by those skilled in the art to which the present invention pertains. Additionally, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless clearly specifically defined.

Spatially relative terms such as 'above', 'upper', 'on', 'below', 'beneath', and 'lower' are used in the drawing. As shown, it can be used to easily describe the correlation between one element or component and other elements or components. Spatially relative terms should be understood as terms that include different directions of the element when used in addition to the direction shown in the drawings. For example, when an element shown in a drawing is turned over, an element described as 'below or beneath' another element may be placed 'above' the other element. Accordingly, the illustrative term 'down' may include both downward and upward directions.

As used herein, 'and/or' includes each and every combination of one or more of the mentioned items. Additionally, the singular form also includes the plural form unless specifically stated in the phrase. As used herein, 'comprises' and/or 'comprising' do not exclude the presence or addition of one or more other components in addition to the mentioned components. The numerical range expressed using 'to' indicates a numerical range that includes the values written before and after it as the lower limit and upper limit, respectively. ‘About’ or ‘approximately’ means a value or numerical range within 20% of the value or numerical range stated thereafter.

In this specification, the first direction (X) refers to any direction, and the second direction (Y) refers to another direction that intersects or is perpendicular to the first direction (X) in a plane. Additionally, the third direction (Z) refers to another direction that intersects or is perpendicular to the plane. In some cases, the first direction (X) and the second direction (Y) may each be parallel to the horizontal direction, and the third direction (Z) may be parallel to the direction of gravity, but the present invention is not limited thereto.

Unless otherwise defined, 'a certain plane viewpoint' means a viewpoint viewed in a direction perpendicular to and parallel to the certain plane. Additionally, unless otherwise defined, 'overlapping in one direction' means that a plurality of components are overlapped and arranged when viewed in a direction parallel to the one direction.

Hereinafter, the present invention will be described in detail with reference to the attached drawings.

Figure 1 is an exploded perspective view of a mattress assembly according to an embodiment of the present invention. Figure 2 is an enlarged perspective view of the spring mat of Figure 1.

1 and 2, the mattress assembly 10 according to this embodiment may include a spring mat 100 (or spring layer) and a cushion mat 200 (or cushion layer, or cushion foam). .

The spring mat 100 is located relatively lower and may include a plurality of springs 110. The plurality of springs 110 may be arranged in the first direction (X) and the second direction (Y). Each spring 110 may be arranged to enable stretching and deformation in the third direction (Z). Accordingly, from a plan view, each spring 110 constitutes one sector, and as the plurality of springs 110 are compressed approximately independently, the height of each sector changes, and the bed including the mattress assembly 10 It can stably support the body of a lying user. As a non-limiting example, the number of springs 110 may be approximately 250 to 400, or approximately 250 to 350.

In some embodiments, the spring mat 100 may further include a steel wire 130 (or ring) and a connection spring 150 that connect, couple, or weave at least some of the plurality of springs 110 to each other. The steel wire 130 has a shape corresponding to the planar edge of the spring mat 100 and can be placed on the edge and coupled to adjacent springs 110 using a clip or the like. The steel wire 130 can improve durability by preventing deformation, such as twisting, of the spring mat 100 when the spring mat 100 is used.

In addition, the connecting spring 150 extends in the width direction of the spring mat 100, for example, in the first direction (X), and can connect or weave two springs 110 adjacent to each other in the second direction (Y). . Accordingly, springs 110 adjacent in the second direction (Y) are somewhat connected, so that when one spring 110 is compressed, other springs may also be affected. That is, the plurality of springs 110 do not operate completely independently of each other, but have some dependency, thereby providing comfort to the user. In other words, the independence of the cushions of the plurality of springs 110 can be somewhat controlled using the connection spring 150.

Meanwhile, the cushion mat 200 may be placed on the spring mat 100. The cushion mat 200 may be placed directly on the spring mat 100, or may be disposed with one or more additional mats (or additional layers) interposed therebetween. As described above, the cushion mat 200 is disposed between the spring mat 100 and the user, thereby reducing the texture of the spring 110 from being directly transmitted to the user.

The polymer forming the cushion mat 200 may have relatively high tensile strength and tensile stress (or tensile modulus, or tensile stress modulus). Through this, it is possible to alleviate the decrease in independence of the cushion during the compression deformation process of the conventional polyurethane cushion mat. In addition, despite repeated use of the mattress assembly 10, the degree of deterioration in the restoring force of the cushion mat 200 may be very slight.

For example, the strength, such as tensile strength, of the polymer of cushion mat 200 may range from about 10.0 MPa to 35.0 MPa, or from about 11.0 MPa to 32.5 MPa, or from about 12.0 MPa to 30.0 MPa. If the tensile strength is greater than the above range, the cushioning feeling may not be sufficient and it may not be suitable for use as a sleeping mattress assembly (10). On the other hand, if the tensile strength is less than the above range, the independence of the cushion may be reduced. Unless otherwise defined, in this specification, tensile strength means the strength until the material breaks when a tensile force is applied to the material.

Additionally, the tensile modulus of the polymer of the cushion mat 200 may be in the range of 2.5 MPa to 5.0 MPa, or about 2.6 MPa to 4.5 MPa, or about 2.7 MPa to 4.0 MPa. Likewise, if the tensile modulus is greater than the above range, the cushioning feeling may not be sufficient and it may not be suitable for use as a sleeping mattress assembly 10. On the other hand, if the tensile modulus is less than the above range, the independence of the cushion may be reduced. Unless otherwise defined, tensile modulus in this specification means 100% modulus and means the force applied to a unit area when the material is stretched 100%.

Additionally, the hardness value of the cushion mat 200 or the polymer of the cushion mat 200 may be in the range of 50.0 to 80.0, or about 55.0 to 75.0, or about 60.0 to 70.0. Likewise, if the hardness is greater than the above range, the cushioning feeling may not be sufficient and it may not be suitable for use as a sleeping mattress assembly 10. On the other hand, if the hardness is less than the above range, the independence of the cushion may be reduced. Unless otherwise defined, hardness herein means Shore A hardness.

In addition to the tensile strength, modulus, and hardness described above, the inventor of the present invention proposes additional physical properties that have a predetermined correlation with tensile strength and the like and can affect the independence of the cushion.

For example, the cushion mat 200 or the polymer of the cushion mat 200 may have a compressibility of about 10% to 20%, or about 10% to 18%, or about 10% to 16%. Unless otherwise defined, compressibility herein means measured at 100°C according to ASTM D395.

Although the cushion mat 200 according to the present embodiment has a thickness that is thinner than that of the prior art, for example, about 1.0 mm to 15 mm, or about 3.0 mm to 13.0 mm, or about 5.0 mm to 11.0 mm. Having a relatively small compression ratio can prevent the texture of the spring 110 from being transmitted to the user. Since the cushion mat 200 has a thin thickness, it not only alleviates the phenomenon of deterioration of the independence of the cushion due to a large thickness in the third direction (Z), but also reduces the thickness of the cushion mat 200 due to the small compression ratio. This phenomenon, that is, the so-called cushion-off phenomenon, can be minimized.

In addition, the polymer of the cushion mat 200 or cushion mat 200 is about 0.85 g/cm ³ to 0.99 g/cm ³ , or about 0.86 g/cm ³ to 0.99 g/cm ³ , or about 0.87 g/cm ³ to 0.99 g/cm 3 It may have a density of g/cm ³ , or about 0.88 g/cm ³ to 0.99 g/cm ³ , or about 0.90 g/cm ³ to 0.99 g/cm ³ . Unlike polymers such as conventional polyurethane series, the cushion mat 200 according to the present embodiment has a relatively high density, and can minimize thickness deformation of the cushion mat 200.

In addition, the polymer of the cushion mat 200 or the cushion mat 200 according to this embodiment is about 300% to 1,000%, or about 320% to 950%, or about 340% to 900%, or about 350% to 850%. It may have an elongation of %. Unless otherwise defined, elongation (or elongation rate) in this specification refers to the rate at which a material is stretched until it breaks according to a tensile test, and when stretched twice, the elongation rate is 100%.

The cushion mat (200) according to the present embodiment is formed of a material having a higher elongation than conventional ones, so that even when provided with a relatively thin thickness as described above, it can prevent a decrease in durability and minimize a decrease in the independence of the cushion.

In the above, various physical properties of the cushion mat 200 or its material polymer of this embodiment are presented in various numerical ranges, and regardless of the form of expression, the lower limit of one numerical range is set as the lower limit, and the upper limit of another numerical range is set as the lower limit. It should be understood to include disclosure of another numerical range as an upper limit.

Examples of polymer materials suitable for realizing physical properties in the above-mentioned numerical range include acrylonitrile-butadiene elastomer and styrene-butadiene-styrene (tri)block copolymer. , butadiene-based polymers such as styrene-(ethylene-butylene)-styrene (tri)block copolymer or polyvinyl acetate copolymer, styrene Examples include copolymer polymers and ethylene-based copolymers.

In addition, the various physical properties described above include the ratio of monomers of the above polymer/copolymer, for example, the ratio of acrylonitrile groups in acrylonitrile-butadiene elastomer, the ratio of styrene in styrenic polymers, and the ethylene ratio in polyvinylacetate copolymers. It can be controlled through etc.

Meanwhile, the cushion mat 200 according to this embodiment can be provided in a very thin form as it has the above-mentioned physical properties. Even though the thickness of the cushion mat 200 in the third direction (Z), that is, the thickness in the stacking direction, is thin, its physical properties prevent the texture of the spring 110 from being transmitted to the user and maintain the independence of the cushion. It can improve and alleviate cushion deformation problems.

In addition, since the cushion mat 200 contains a polymer material with excellent elasticity, the bonding characteristics with the spring 110 can be improved, unlike conventional polyurethane-based polymers. Therefore, the present invention is not limited to this, but even if the complicated structure for combining the spring mat 100 and the cushion mat 200 is omitted as in the prior art, the cushion mat 200 is not fixed on the spring mat 100 and is pushed. This phenomenon can be prevented.

In addition, due to the thin thickness of the cushion mat 200, a structure unique to the present invention can be provided. For example, although not shown in the drawings, the cushion mat 200 may at least partially cover the side surface of the spring mat 100. Through this, it is possible to prevent the hard side, including the steel wire 130, of the spring mat 100 from being exposed to the outside.

In addition, although not shown in the drawing, the mattress assembly 10 surrounds the spring mat 100 and the cushion mat 200 to cover the lower surface of the spring mat 100 and the upper surface of the cushion mat 200. It may further include a cover layer made of fabric or fiber material. At this time, in the mattress assembly 10, the cushion mat 200 may correspond to the second layer from the top. In other words, when excluding the cover layer, the cushion mat 200 can be placed at the top.

A preference test experiment was conducted by manufacturing a number of bed mattress assemblies and conventional bed mattress assemblies including a cushion mat implemented in the same form as described above. The configuration of the mattress assembly used in the experiment is as follows. At this time, the same spring mattress was used, and the size of the mattress assembly was based on a single bed (width 100 cm, length 200 cm). At this time, polyurethane was purchased and used commercially, and the thicker the polyurethane, the lower the density was used.

cushion mattress thickness cushion mattress material Manufacturing Example 1 7.0mm Acrylonitrile-butadiene Production example 2 7.0mm Styrene-butadiene-styrene block copolymer Production example 3 8.0mm Acrylonitrile-butadiene Production example 4 8.0mm Styrene-butadiene-styrene block copolymer Production example 5 10.0mm Acrylonitrile-butadiene Production example 6 10.0mm Styrene-butadiene-styrene block copolymer Production example 7 15.0mm Acrylonitrile-butadiene Production example 8 10.0mm Polyurethane Production example 9 15.0mm Polyurethane Production example 10 40.0mm Polyurethane Production example 11 80.0mm Polyurethane Production example 12 120.0mm Polyurethane Production Example 13 150.0mm Polyurethane

<Experimental Example 1>

Then, a blind preference experiment was conducted on 25 people using the mattress assembly prepared according to the manufacturing examples.

In general, depending on the user's preference or spine condition, some may prefer a mattress with a firmer feel or less cushioning, or a mattress with a larger cushioning feel. At this time, the overall cushioning of the mattress is adjusted depending on the material of the cushion mat 200, as described above, or may be adjusted depending on the structure and connection method of the spring of the spring mat 100. However, since the above-described manufacturing examples all used the same spring mat, it was possible to evaluate the cushion feeling and independence of the cushion according to the cushion mat 200 through a preference experiment.

And the results are shown in Figure 3. Referring to Figure 3, 10 people preferred Preparation Examples 1 to 7, which are mattress assemblies according to the present invention.

For reference, in the case of Preparation Examples 1 and 2, no one chose them because they could not feel the cushioning feeling due to the spring texture, and in the case of Preparation Examples 3 to 7, no one chose them because they could feel the spring texture.

In addition, among Preparation Examples 8 to 13 using conventional polyurethane-based cushion mats, no one preferred Preparation Examples 8 and 9 using a very thin cushion mat. The reason was that you couldn't feel the cushioning feeling due to the spring texture.

In addition, in Preparation Example 10, which used a cushion mat that gave a relatively firm feel, the majority preference of 6 people was surveyed, and in Preparation Example 12, which used a cushion mat that gave a relatively soft feel, the majority preference of 5 people was surveyed.

That is, 16 out of 25 people selected the cushion mat according to the present invention, which has a relatively firm feel (Preparation Examples 3 to 7, especially Preparation Examples 5 to 7) and Preparation Example 10. It has been done.

<Experimental Example 2>

In the above-mentioned Experimental Example 1, the people who were found to prefer a soft mattress, that is, the 7 people who chose Preparation Example 12 and Preparation Example 13, were asked to choose between the bed of Preparation Example 6 and the bed of Preparation Example 10. As a result of the investigation, most people had difficulty choosing their preference, and 5 people chose the bed of Preparation Example 6.

In other words, there is no substantial difference in the feeling given to the user between Preparation Example 10, which is a conventionally used bed with a hard texture, and the bed of Preparation Example 6 according to the present invention, or rather, the majority chose the bed of Preparation Example 6. . In addition, as described above, the cushion mat using a material having high tensile strength, tensile modulus, etc. according to the present invention is expected to suppress the phenomenon of cushion sagging even with the passage of time.

<Experimental Example 3>

Nine people who selected Preparation Examples 5 to 7 in the above-described Experimental Example 1 were investigated for choosing between the bed of Preparation Example 10 and the bed of Preparation Example 12.

Likewise, the six people who selected Preparation Example 10 in the above-described Experimental Example 1 were investigated to choose between the bed of Preparation Example 7 and the bed of Preparation Example 12.

As a result, all 9 people who selected Preparation Examples 5 to 7 selected Preparation Example 10, and all 6 people who selected Preparation Example 10 selected Preparation Example 7, resulting in a conclusion similar to Experimental Example 2. there was.

<Experimental Example 4>

The independence of the cushions of the bed of Preparation Example 7 and the bed of Preparation Example 10 was evaluated for 9 people who selected Preparation Examples 5 to 7 in the above-described Experimental Example 1. And the results are shown in Table 2 below.

chosen person Select Manufacturing Example 7 7 people Select Manufacturing Example 10 - Not selectable 2 people

<Experimental Example 5>

The independence of the cushions of the bed of Preparation Example 7 and the bed of Preparation Example 10 was evaluated for six people who selected Preparation Example 10 in the above-described Experimental Example 1. And the results are shown in Table 3 below.

chosen person Preparation Example 7 Selection 4 people Select Manufacturing Example 10 1 person Not selectable 1 person

<Experimental Example 6>

In the above-described Experimental Example 1, the independence of the cushions of the bed of Preparation Example 7 and the bed of Preparation Example 10 was evaluated among 10 people who selected the rest except Preparation Examples 5 to 7 and Preparation Example 10. And the results are shown in Table 4 below.

chosen person Preparation Example 7 Selection 4 people Select Manufacturing Example 10 2 people Not selectable 4 people

Referring to Tables 2 to 4, it was found that the bed using the mattress assembly of the present invention according to Preparation Example 7 had higher cushion independence compared to Preparation Example 10 in all experimental groups.

In other words, it can be seen that the cushion mat according to the present invention can be made relatively thin and the independence of the cushion can be improved by using a material with physical properties that are different from those of the prior art.

Although the above description focuses on the embodiments of the present invention, this is only an example and does not limit the present invention, and those skilled in the art will understand the present invention without departing from the essential characteristics of the embodiments of the present invention. It will be apparent that various modifications and applications not illustrated above are possible.

Therefore, the scope of the present invention should be understood to include changes, equivalents, or substitutes of the technical ideas exemplified above. For example, each component specifically shown in the embodiments of the present invention can be modified and implemented. And these variations and differences related to application should be construed as being included in the scope of the present invention as defined in the appended claims.

10: Mattress assembly
100: spring mat
200: Cushion mat

Claims (6)

A spring mat including a plurality of springs; and
Including a cushion mat disposed on the spring mat,
The cushion mat has a tensile strength of 12.0 MPa to 30.0 MPa, a tensile stress modulus of 2.5 MPa to 5.0 MPa (100% Modulus), a hardness of 60.0 to 70.0, and 350% to 850%. has an elongation, a compression ratio of 10% to 20% (ASTM D395, @100°C), and a density of 0.85 g/cm ³ to 0.99 g/cm ³ ,
A mattress assembly in which the thickness of the cushion mat in the stacking direction is in the range of 10 mm to 15 mm. The method of claim 1, wherein the spring mat is:
Further comprising a connecting spring extending in a first direction,
A mattress assembly, wherein one said connecting spring is coupled with two springs arranged adjacently in a second direction intersecting said first direction. According to paragraph 1,
The cushion mat is a mattress assembly having a density of 0.90 g/cm ³ to 0.99 g/cm ³ . According to paragraph 1,
A mattress assembly wherein the tensile stress modulus of the cushion mat is in the range of 2.7 MPa to 4.0 MPa. According to clause 4,
A mattress assembly wherein the cushion mat at least partially covers a side of the spring mat. According to paragraph 2,
The single connecting spring is coupled to a plurality of springs arranged in the first direction.