JPH119399A - Mat for bedding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mat for bedding, with which a lying attitude can be kept much closer to the state of lying on the floor, the physiologically desired lying attitude can be provided, feelings to sleep are made satisfactory as well and provision through industrial production is enabled, suitable for a bed mat and a mattress. SOLUTION: This mat for bedding has thickness of at least 40 mm while wrapping a cushion part with side cloth composed of woven fabric. In that case, the cushion part has the structure comprising laminating two layers of cushion bodies. When compression distortion is applied while using a circular presser plate having a diameter of 150 mm, compression stress in case of compression deformation amount of 20 mm is 10 to 40 gf/cm<2> and compression stress in case of compression deformation amount of 40 mm is 160 to 220 gf/cm<2> .

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can maintain a sleeping posture closer to a state of lying on a floor, obtain a sleeping posture which is said to be physiologically desirable, and provide a good sleeping comfort. The present invention relates to a bed mat that can be provided by industrial production and a mat for bedding suitable for a mattress or the like.

[0002]

2. Description of the Related Art At present, cushioning materials used for bed mats, mattresses, etc. are made of cotton, wool, polyester, urethane foam, etc., and are composed of a laminate thereof. Is used.

However, cotton, wool, and polyester cotton, which are widely used, have a problem in that the thickness immediately decreases, and the cotton is made felt and sagging. In addition, cotton and wool cotton are natural products, which may cause mold growth depending on the mite breeding and storage conditions, etc. Is required. In addition, urethane foam is one of the most excellent materials from the point of sagging, but urethane foam has no breathability, so during sweating, when sweating increases, especially in summer etc. It is hard to say that it is appropriate. In recent years, Japanese Patent Application Laid-Open No. 7-58061 has introduced the invention as a material having less settling and excellent air permeability.

[0004] On the other hand, besides the viewpoint of comfort during settling and sweating, the purpose of obtaining bedding which is considered to be physiologically good for the human body is to prevent body pressure, so-called bedsores. Waterbeds and various types of bedding mats that suggest good quality have been proposed and are commercially available.

[0005] The present inventors have studied the comfort related to the use of mats for bedding in general, and found that bedding that is considered physiologically good for the human body includes not only body pressure dispersibility but also sleeping pressure. Attitude has been found to be a very important factor. That is, the desirable posture when sleeping is a form in which the posture when a person lays on the floor is reproduced even when using the bedding, and the gap between the waist, that is, the waist and the buttocks and the back is the surface of the cushion body. Although the entire body sinks to the extent that it touches the buttocks and back, it is said that the configuration of the cushion body, which does not sink too much, can keep the sleeping posture closer to the state when lying on the floor, which is physiologically desirable It is.

However, in the current various bedding mats, materials which can maintain the sleeping posture in a physiologically favorable state as described above and what is good as a cushion body are not yet described. I can't find the proposal. This seems to be a major reason that there has been no general method of measuring the sleeping posture for a long time. The only conventionally proposed measuring method of the sleeping posture is to stretch the treatment bandage to which gypsum is attached in advance thinly on bedding and then moisten it, and then lay the subject on it until the gypsum hardens, A method called gypsum molding is used to take out the shape. However, this method is a measurement method that is extremely burdensome both physiologically and psychologically because the subject needs to be stationary on the gypsum bandage to be hardened until the gypsum hardens. In addition, for the analysis, it is necessary to perform an image analysis on the assumption that the gypsum mold solidified into a human figure is a contour line, and this is a measurement method that requires considerable labor. In the current situation where it is extremely difficult to measure the sleeping posture, research on the sleeping posture has not naturally progressed, and therefore, in order to obtain a desirable sleeping posture, what is good as a cushion body,
In addition, it has been conventionally difficult to specify what kind of compression characteristics are required.

[0007] On the other hand, although there are few research examples focusing on the direct sleeping posture, recently, as a measure to improve the sleeping comfort when lying on the cushion body, in recent years, for each contact part of the human body, for example, for each part such as the waist, buttocks, and back, A method of examining changing the hardness of the cushion body has been proposed. However, according to this method, it is necessary for an expert to carefully examine the hardness of the cushion body for each contact portion of the human body for each individual. Therefore, even if it is possible to specify the hardness distribution for each part of the human body as a cushion body that can be said to be a desirable sleeping posture, in actual practice the body shape such as height and weight varies from individual to individual, so production and At present, there is no reasonable means of designing a cushioning body that can be sold and tailored to the individual, and that matches the idea of the previous term, and provides it to the market.

[0008]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems and can keep the sleeping posture closer to the state when lying on the floor, thereby obtaining a sleeping posture which is said to be physiologically desirable. It is an object of the present invention to provide a bed mat which can be provided with good sleeping comfort and can be provided by industrial production, and a mat for bedding suitable for a mattress or the like.

[0009]

Means for Solving the Problems In order to achieve the above-mentioned object, the present inventors considered a method for measuring the sleeping posture which will be described later, but very easily. Invented the mat. That is, a bedding mat having a thickness of at least 40 mm in which a cushion portion is wrapped around a side fabric made of a woven or knitted fabric, wherein the cushion portion has a structure in which two layers of cushion bodies are laminated, and has a diameter of 1 mm.
When compressive strain is applied using a 50 mm circular pressure plate, the compressive stress at a compressive deformation of 20 mm is 10 to 40 gf / cm ² , and the compressive stress at a compressive deformation of 40 mm is 160 to 22.
A mat for bedding characterized by having a weight of 0 gf / cm ² . Further, the thickness of the layer on the human body side of the two-layer cushion body is 10 to 40 mm, and when a compressive strain is given using a circular pressure plate having a diameter of 150 mm, the compressive stress when the amount of compressive deformation is 10 mm is 1 to 40 mm. 14 gf / cm ² , the thickness of the other layer is 20 mm or more, and when a compressive strain is given using a circular pressing plate having a diameter of 150 mm, the compressive stress when the amount of compressive deformation is 10 mm is 70 to 155 gf / cm ^2. The mat for bedding according to the above, and a part of the cushion body, forms a random loop by winding continuous filaments made of a thermoplastic elastic resin and having a wire diameter of 5 mm or less. The mat for a bedding as described above, characterized in that most of the contact portions of the respective loops are formed of a three-dimensional three-dimensional structural mesh body having a thickness of 10 mm or more which is fused to each other.

In order to obtain a desirable sleeping posture, the cushion body is composed of two layers: a soft layer for appropriately lowering the buttocks and the back to make contact with the mat surface, and a hard layer for supporting the weight of the buttocks and the back. It consists of. The compression characteristics are
It is measured on the entire mat including the side of the woven or knitted fabric.
The hard layer is evaluated by the compressive stress at the time of (1). The compressive stress when the deformation amount 20mm With 10~40gf / cm ^2, is contacted with the waist to the mat surface, is less than 10 gf / cm ^2,
If it is too soft, a feeling of contact with the mat surface of the waist cannot be obtained, and if it exceeds 40 gf / cm ² , the mat surface is too hard and the amount of sinking is insufficient, so that the mat surface does not contact the waist. Preferably 15 to
30 gf / cm ² . In addition, by setting the compressive stress at a compressive deformation amount of 40 mm to 160 to 220 gf / cm ² ,
Lowering the back moderately to obtain a desirable sleeping posture, but 160gf /
If it is less than cm ² , the buttocks are too sunken and the sleeping posture is V-shaped, or both the buttocks and back are too sunken and the sleeping posture is W-shaped, and a desirable sleeping posture cannot be obtained. In addition, 220gf /
If it exceeds cm ² , the mat is too hard and feels like a floor. Preferably it is 175 to 200 gf / cm ² . Furthermore,
The bedding mat must have a thickness of at least 40 mm. If the thickness is less than 40 mm, the overall thickness is insufficient, so that a person with a heavy weight feels a floor feeling. Preferably it is 50 to 100 mm.

The soft layer used on the side of the skin in contact with the human body to obtain the compression characteristics of the mat preferably has a thickness of 10
Compressive stress is 1 to 1 when compressive deformation is 10 mm
It is 4 gf / cm ² . When the thickness is less than 10 mm, the waist does not come into contact with the mat surface, and when the thickness exceeds 40 mm, the total sinking amount becomes large, and particularly, the buttocks become too deep and the sleeping posture becomes V-shaped, which is not preferable. The compressive stress when the amount of compressive deformation 10mm in less than 1 gf / cm ^2, can not be obtained contact feeling to the mat surface of the waist too soft, and if exceeding 14 gf / cm ^2, the amount of sinking too hard is The mat surface does not contact the waist due to lack. On the other hand, the hard layer on the anti-human body side has a thickness of 20 mm or more and a compressive stress of 70 to 155 when the amount of compressive deformation is 10 mm.
gf / cm ² is preferred. If the thickness is less than 20mm,
Feeling of flooring due to insufficient thickness. Also, the waist does not contact the mat surface. On the other hand, if the compressive stress at a compressive deformation amount of 10 mm is less than 70 gf / cm ² , the buttocks and the back are too soft, and the sleeping posture becomes V-shaped or W-shaped as described above, and a desired sleeping posture cannot be obtained. . 155gf / cm
If it exceeds ² , the floor feels too hard.

When making a laminated mat, the cushion may be wrapped in a woven or knitted fabric and quilted. However, when the quilting interval is 20 cm square or more, the effect on the compression characteristics is hardly observed. I can't.
When quilting is performed at intervals of less than 20 cm square, the quilting increases the compressive stress. The compression properties of the entire mat can be obtained by laminating the above soft layer and hard layer, wrapping them around the side of the woven or knitted fabric, and performing quilting as appropriate.

As the soft layer, a short fiber web made of cotton, wool, polyester or the like having a predetermined thickness and compression characteristics can be used. When a short fiber web is used for the soft layer, For sag resistance of the web, it is desirable to mix 30% by mass or more of polyester short fibers having a yarn-to-yarn static friction coefficient of 0.20 or less. More preferably, it is desirable to mix 50% by mass or more of polyester short fibers having a yarn-to-yarn static friction coefficient of 0.15 or less.

The hard layer is formed by mixing ordinary polyester staple fiber and low-melting-point adhesive fiber, which are usually used for mattresses, and heat-compressing to form a hard cotton (fiber cushion) having a predetermined thickness and compression characteristics; A mat or the like can be used, but more desirably, a continuous wire having a wire diameter of 5 mm or less made of a thermoplastic elastic resin is meandered to form a random loop, and a contact portion of each loop is formed. By using a three-dimensional three-dimensional structure net having a thickness of 10 mm or more, which is mostly fused to each other, sag can be reduced and a desired sleeping posture can be obtained for a longer period of time.

[0015]

EXAMPLES The polyester fibers and three-dimensional three-dimensional structure network used in the present invention were obtained by the following method. Polyester fiber 1: Polyethylene terephthalate having an intrinsic viscosity of 065, using a melt extruder, a spinning temperature of 285 ° C.
, 1.2 mm in outer diameter and 1.0 mm in inner diameter
A single hole discharge rate of 4.5 g / min is discharged from an orifice having a projection of 0.5 mm at a position of 20 ° C., and rapidly cooled with cooling air of 2 m / sec from 30 mm immediately below the nozzle.
An undrawn yarn having a hollow cross section having projections of 32 denier obtained by drawing at 00 m / min is drawn to 1,000,000 denier, drawn three times at 80 ° C in the first step, and 135 ° C in the second step. After stretching at 1.32 times, after applying 0.2% of finishing oil,
The tow-shaped fiber provided with the mechanical crimp is treated with hot air at 160 ° C. to develop a latent crimp, and then cut into 64 mm to obtain a 10 mm fiber.
Polyester fiber 1 having a denier three-dimensional three-dimensional crimp and a static friction coefficient between yarns of 0.25 was obtained.

Polyester fiber 2: Polyethylene terephthalate having an intrinsic viscosity of 065 was melted at a spinning temperature of 285 ° C. and discharged from an orifice having an outer diameter of 1.6 mm and an inner diameter of 1.4 mm at a single hole discharge rate of 3.2 g / min. And drawn at 1300 m / min while quenching from 40 mm immediately below the nozzle with 2 m / s cooling air at 1300 m / min. The aminosiloxane and polysiloxane and a small amount of the catalyst stretched 3.4 times and 1.1 times at 135 ° C.
%, A mechanical crimp is applied, and then treated with hot air at 160 ° C. for 5 minutes to develop a latent crimp, and then cut into 76 mm to obtain a three-dimensional hollow three-dimensional crimped yarn. Polyester fiber 2 having a coefficient of static friction between threads of 0.10 was obtained.

Polyester fiber 3: A 6-denier hollow cross section obtained in the same manner as polyester fiber 2 except that aminosiloxane and polysiloxane were applied with a normal finishing oil without adding a small amount of catalyst, and cut into 64 mm. Polyester fiber 3 having crimped static friction coefficient between yarns of 0.32 was obtained.

Thermal bonding fiber 1: The isophthalic acid component and the terephthalic acid component were 40 /
A copolymer component having an intrinsic viscosity of 0.56 and a glycol component having a limiting viscosity of 0.56 is melted individually as a sheath component and polyethylene terephthalate having a limiting viscosity of 0.64 as a core component at a weight ratio of 60 to be distributed immediately before the orifice. At a spinning temperature of 284 ° C., the amount of each discharge was set to 1.6 g / min per hole (0.8 g / min: 0.8 g / min) at a 50/50 weight ratio, and the spinning speed was 1300 m / min.
The undrawn yarn having a fineness of 11 denier obtained in the
After drawing 2.7 times at 27 ° C., 0.2% of a finishing oil is applied, then a mechanical crimp is applied, cut to 51 mm, and a yarn having a mechanical crimp in a 4 denier sea core cross section is applied. The thermally bonded fiber 1 having a coefficient of static friction of 0.26 was obtained.

Three-dimensional structure network 1; dimethyl terephthalate (DMT) and 1.4 butanediol (1.4B
D) was charged with a small amount of a catalyst, transesterified by a conventional method, and polytetramethylene glycol (PTMG) was added to 48).
% By weight, and subjected to polycondensation while raising the temperature and reducing the pressure to produce a polyetherester block copolymer elastomer. Then, 2% of an antioxidant was added, mixed and kneaded, pelletized, and dried at 50 ° C. for 48 hours under vacuum. Is melted at 235 ° C.
3 kg, 5.63 cm length of nozzle Nozzle with 5 mm / min pitch in the width direction, 5 mm pitch in the width direction, 4.33 mm pitch in the length direction, staggered orifice diameter 1 mm Cooling water is placed 30 cm below the nozzle surface, and a pair of take-up conveyors are arranged at 5 cm intervals in parallel with stainless steel endlessettes of which width is regulated to 100 cm. take,
While forming a random loop, the linear contact parts are fused together, and the two sides are sandwiched and drawn into the cooling water at a speed of 2 m / min to be solidified, so that both sides have a flattened width 100.
cm net-like structure was obtained. Next, after cutting into 200 cm, a heat treatment was performed for 15 minutes in a hot-air dryer at 105 ° C. for 15 minutes to give a pseudo-crystallized thickness of 5 cm and an apparent density of 0.05 g /
A three-dimensional three-dimensional structure network 1 of cm ³ was obtained. The wire diameter of the obtained three-dimensional three-dimensional structure network 1 is 0.6 mm, the cyclic compressive residual strain is 4.5%, and the compressive residual strain at 70 ° C. is 5.3%.
Met.

Three-dimensional three-dimensional structure network 2; discharge amount is 3.6
A three-dimensional three-dimensional structure network 2 having a thickness of 4 cm and an apparent density of 0.045 g / cm ³ was obtained in the same manner as the three-dimensional three-dimensional structure network 1, except that the rate was set to kg / min. The wire diameter of the obtained three-dimensional structure network 2 was 0.55 mm, the repeated compressive residual strain was 4.2%, and the compressive residual strain at 70 ° C. was 5.0%.

Three-dimensional three-dimensional structure network 3; Same as the three-dimensional three-dimensional structure network 1, except that the effective surface of the nozzle is 105 cm wide and 3.9 cm long, and the discharge rate is 3.3 kg / min. Thickness 3cm, apparent density 0.055g / cm
^Thus, a three-dimensional three-dimensional structure network 3 was obtained. The wire diameter of the obtained three-dimensional three-dimensional structure network 3 was 0.61 mm, the repeated compressive residual strain was 4.8%, and the compressive residual strain at 70 ° C. was 5.4%.

Three-dimensional three-dimensional structure network 4; discharge amount is 3.0
A three-dimensional three-dimensional structure network 4 having a thickness of 5 cm and an apparent density of 0.03 g / cm ³ was obtained in the same manner as the three-dimensional three-dimensional structure network 1, except that the weight was set to kg / min. The wire diameter of the obtained three-dimensional three-dimensional structure network 4 is 0.48 mm, and the cyclic compression residual strain is 3.
The compression set at 6% and 70 ° C. was 3.8%.

(Example 1) A three-dimensional three-dimensional structure network 1 was used as a hard layer, and a polyester fiber 1 and a polyester fiber 2 were mixed and pre-opened at a 50/50 weight ratio as a soft layer. Spread the webs on the broad side cloth (cotton 10) so that the basis weight becomes 450 g / m ^2.
0%, number of shots 130 vertical and 70 horizontal) 25
Apply the quilt of cm square to make the thickness of the futon surface 30
mm soft layer is integrated with the soft layer, the hard layer is inserted and sewn, thickness 80 mm, width 100 c
m, a bedding mat 1 having a length of 200 cm was prepared.

Example 2 Polyester fiber 1 and heat-bonded fiber 1 were mixed and pre-spread in a weight ratio of 70/30, and then opened by a card and the laminated web was 30 m thick.
m, and an apparent density of 0.047 g / cm ³ , compressed with a perforated plate, heat-treated with hot air at 160 ° C. for 15 minutes, and thermally bonded to form a hard layer 2. The same as in Example 1 except that the basis weight was 450 g / m ² ,
Is wrapped and sewn on the side ground, thickness 60 mm, width 100
A bedding mat 2 having a length of 200 cm and a length of 200 cm was prepared.

[0025] (Example 3) was mixed pre opened so that the basis weight 450 g / m opening web 1 of ² and polyester fiber 2 and wool 50/50 weight ratio of the same composition as in Example 1 as a soft layer The opened web 2 having a basis weight of 450 g / m ² , which was opened and laminated with a card, was stacked on the opened web 1, and was placed on a broad side cloth (100% cotton, number of driving 130 vertical, 70 horizontal). Wrapping is performed by quilting a 25 cm square to form a soft layer having a thickness of 20 mm on the front side of the futon, and the soft layer is integrated, and the three-dimensional three-dimensional structure network 2 is laminated as a hard layer to form a side layer. The bedding mat 3 having a thickness of 70 mm, a width of 100 cm and a length of 200 cm was prepared.

(Comparative Example 1) A web in which polyester fiber 1 was opened with a card was laminated to a basis weight of 1200 g / m ² , and needle punched, followed by a broad side fabric (100% cotton, number of driving 130 vertical, 70 horizontal) The quilt is wrapped in a 25 cm square, and the side layer and the soft layer created so as to form a soft layer having a thickness of 30 mm on the front side of the futon are integrated with each other, and the three-dimensional three-dimensional structure network 3 is laminated as a hard layer. A bedding mat 4 having a thickness of 60 mm, a width of 100 cm, and a length of 200 cm was prepared by wrapping and sewing on the ground.

Comparative Example 2 Polyester fiber 3 and polyester fiber 3 were mixed and preliminarily opened so as to have a 50/50 weight ratio, then opened with a card and laminated to obtain a basis weight of 450 g.
/ M ² Opened web is wrapped in broad side cloth (100% cotton, 130 pieces in length, 70 pieces in width) and quilted to form a 20cm thick soft layer on the front side of the futon. The hard layer obtained in the same manner as in Example 2 was wrapped and sewn and integrated with the side layer, except that the side layer and the soft layer were integrated, the thickness was 40 mm, and the apparent density was 0.02 g / cm ³ . Width 100cm, length 200cm
The mat 5 for bedding was prepared.

(Comparative Example 3) The polyester fiber 3 and the heat bonding fiber 1 were preliminarily mixed and mixed at a weight ratio of 75/25, and then opened by a card to form a laminated web having a thickness of 50 m.
m, and compressed with a perforated plate so as to have an apparent density of 0.02 g / cm ³ , heat treated with hot air at 160 ° C. for 15 minutes, and thermally bonded to form a hard layer 4. As the soft layer, a side layer similar to that in Example 2 and a soft layer were integrated and quilted,
And sewn, thickness 80mm, width 100cm, length 2
A bedding mat 6 of 00 cm was prepared.

(Comparative Example 4) As a soft layer, a basis weight of 450 g /
to those quilted by integrating a similar side fabric and soft layer as in Example 1 except that the m ^2, and sewing placed a three-dimensional structure like body 4, the thickness 100 mm, apparent density 0.02
g / cm ³ , except that the hard layer obtained in the same manner as in Example 2 was wrapped around the side ground and sewn and integrated to obtain a thickness of 60 mm and a width of 100 c.
A bedding mat 7 having a length of 200 cm and a length of 200 cm was prepared.

With respect to these mats for bedding,
The measurement was performed by the following method. (1) Thickness The thickness was measured in accordance with JIS K6401-1980 “Soft urethane foam for cushion” according to the item of hardness test. The circular pressure plate used as the compression element had a diameter of 150 mm. (2) Compressive deformation and compressive stress Using a universal tensile tester Tensilon, JIS K640
1-1 1980 "Soft urethane foam for cushion" was tested according to the hardness test item, and the value of compressive stress for each amount of compressive deformation was read from the measurement chart. The circular pressure plate used as the compressor had a diameter of 150 mm, and the compression deformation rate was 10 mm / min. (3) Sleeping posture Place two mats adjacent to each other with an interval of 5 cm, place a mat on it, and stab a needle with a length longer than the thickness of the mat from the top of the mat to become the boundary where the needle has penetrated the mat. Mark. Next, the boundary position between the needle and the mat when the person is laid on the mat is also marked, and the difference between when no load is applied and when the person is laid is read to determine the sinking amount. By the line graph which made the calculated amount of sinking continuously for each part,
I got a sleeping posture from the side. The sleeping posture when lying on the floor, the spacing between the desks is 2 cm, the head of the needle is pressed directly from the bottom of the desk to the back of the subject to mark, then subtract the thickness of the desk, It was obtained by determining the amount of floating on the back. In this case, all measurements were performed in the supine position, targeting the midline from the head to the torso. No pillows are used. (4) Apparent density Calculated according to the items of the apparent density test of JIS K6401-1980 “Soft urethane foam for cushion”. (5) Residual compressive residual strain It was carried out in accordance with the items of JIS K6401-1980 "Soft urethane foam for cushion", which are the items of cyclic compressive residual strain test. That is, a sample whose thickness was measured by the method of (1) was cut into a size of 15 cm × 15 cm, and four corners of the interface were sewn with sewing threads so that the side ground and the cushion structure did not shift or come off. Using a Shimadzu Servo Pulsar, compression was repeated 80,000 times continuously at a speed of 60 times per minute to a thickness of 50% in a room at 25 ° C. and 65% RH, then left for 30 minutes, and the thickness was measured and measured. The ratio between the thickness difference before measurement and the thickness before measurement is indicated by%.

The bedding mats thus prepared were evaluated by the following method. (1) Good sleeping posture A woman with a height of 156 cm, a weight of 46 kg, and a waist gap of 30 mm when lying on the floor was used as a standard paneler, and supine on the samples of Examples 1 to 3 and Comparative Examples 1 to 4. The amount of squatting of the buttocks, back, and waist when gently lying down was measured, and the results were evaluated for each part according to the following criteria. The overall evaluation was performed according to the following criteria. a. Evaluation of sinking amount in buttocks and back: 25 mm or more to less than 35 mm; 4 points, 35 mm to less than 40 mm, or 20 mm to less than 25 mm; 3 points, 40 mm to less than 50 mm, or 10 mm to less than 20 mm; 2 points , 50 mm or more, or less than 10 mm; 1 point b. Evaluation of sinking amount in waist: 0 mm or more and less than 5 mm; 4 points, 5 mm or more and less than 10 mm; 3 points, 10 mm or more and less than 20 mm, or -5 mm or more and less than 0 mm; 2 points, 20 mm or more, or -5 mm or less; 1 point c. Overall evaluation of good sleeping posture: 10 to 12 points; 、, 8 to 9 points; ○, 6 to 7 points; Δ, 3 to
5 points; × (2) Repeated compression residual strain The lower the%, the smaller the repeated compression residual strain and the better the durability. (3) Sensory Evaluation The created mats were spread and arranged in a large room at 23 ° C. and 60% RH, and ten panelists were allowed to lie down for 5 minutes each.
(The pillows were not used this time.) Very good; ◎, somewhat good; ○, slightly bad; △, not good; ×

The results obtained are shown in Table 1. From the results of the good sleeping posture evaluated from the compressive stress and the amount of sinking and the sensory evaluation (10 panelists gave the most responses) in Table 1, the bedding mat of the present invention shown in the examples was In addition, the sleeping posture can be kept closer to the state when lying on the floor, the sleeping posture which is said to be physiologically desirable is obtained, and the sleeping comfort is also good.

[0033]

[Table 1]

[0034]

The bedding mat according to the present invention has a cushion body configuration which can realize a state in which the gap between the waist and the buttocks and the back is in contact with the surface of the cushion, but the buttocks and the back are not too deep. Bed mats that can be provided by industrial production because they can keep the sleeping posture closer to the state when lying on the floor, obtain a sleeping posture that is said to be physiologically desirable, and have good sleeping comfort Also, it has become possible to obtain a bedding mat suitable for a mattress or the like.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view when measuring a sleeping posture.

FIG. 2 is a cross-sectional view when measuring a sleeping posture in a state where a person is lying down.

FIG. 3 shows the amount of sinking when a woman 156 cm tall, weighs 46 kg, and has a waist gap of 0 mm when lying on the floor, lying on the floor and on the bedding mat of the present invention (Example 1). Line graph created continuously for each part.

[Explanation of symbols]

1: soft layer of the cushion body, 2: hard layer of the cushion body,
3: Needle, 4: Human body

Claims (3)

[Claims] 1. A bedding mat having a thickness of at least 40 mm in which a cushion portion is wrapped around a side fabric made of a woven or knitted fabric, wherein the cushion portion has a structure in which two layers of cushion bodies are laminated, and has a circular shape with a diameter of 150 mm. When a compressive strain is applied using a pressing plate, the compressive stress when the amount of compressive deformation is 20 mm is 10 to 40 gf / cm ² , and the compressive stress when the amount of compressive deformation is 40 mm is 160 to 220 gf / cm ^2. A mat for bedding characterized by the following. 2. The thickness of the two-layer cushion body on the human body side is 10 to 40 mm, and when a compressive strain is given using a circular pressure plate having a diameter of 150 mm, the compressive stress when the compressive deformation amount is 10 mm is reduced. 1 to 14 g / cm ² and the thickness of the other layer is 2
^2. The bedding according to claim 1, wherein the compressive stress at the time of compressive deformation of 10 mm when compressive strain is given by using a circular pressing plate having a diameter of at least 0 mm and 150 mm is 70 to 155 gf / cm ^2. Mat. 3. A part of the cushion body is formed by winding a continuous line of a thermoplastic elastic resin having a wire diameter of 5 mm or less to form a random loop, and a large contact portion of each loop is formed. The bedding mat according to claim 1, wherein most of the portions are formed of a three-dimensional three-dimensional structure mesh body having a thickness of 10 mm or more which is fused to each other.