JPH0797772A - Cushioning material made of fiber and having ruggedness on the surface and its production - Google Patents

Abstract

PURPOSE:To produce a new cushioning material made of fibers, excellent in cushioning properties, residual compressive strain properties and fatigue resistance and exhibiting an excellent manual pressure effect and an excellent air- permeability due to the ruggedness of the surface when used, e.g. as a mattress for a bed. CONSTITUTION:This cushioning material 1 made of fibers is characterized by the ruggedness 2 formed on the surface of the cushioning material produced by putting fiber webs respectively composed of a combination of a high-melting fiber and a low-melting fiber in layers in the direction perpendicular to the thickness direction and the latex 3 coating applied to the rugged 2 surface of the cushioning material subjected to heat bonding between the respective high-melting fibers and between the respective fiber webs through melting of the low-melting fiber.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a base synthetic fiber such as polyester fiber or a mixed cotton such as synthetic fiber and natural fiber, rayon, etc. Regarding the fiber cushion material made by fusing each fiber by wearing, more specifically, when it is used as a batting of a mattress for beds, etc. The present invention relates to a sanitary fiber cushioning material which has an acupressure effect due to surface irregularities and is excellent in breathability.

[0002]

2. Description of the Related Art In recent years, a cushion material made of fiber such as polyester has come to be used in place of the cushion material made of urethane foam which has been conventionally used. This fiber cushion material is formed by mixing a fiber having a relatively high melting point such as polyester fiber and a low melting point fiber having a lower melting point than the high melting point fiber to form a fiber web, and laminating the fiber web to an appropriate thickness. Then, by heating to a temperature between the melting points of the high-melting point fiber and the low-melting point fiber, the low-melting point fiber is melted and the high-melting point fibers are heat-sealed to form a mat-like cushioning material. However, since the conventional fiber cushion material as described above is laminated and formed along the thickness direction of the cushion material using a cross wrapper or the like, a fiber web formed by carding with a card machine or random webber is used. The carding direction of the fibers in the fiber web is orthogonal to the thickness direction of the cushion material. That is, since the fibers are in a state of sleeping in the cushion material,
The elastic properties of the fibers themselves have not been fully utilized as a cushioning material to which a load is applied in the thickness direction, and therefore, the degree of fatigue is large and it cannot be said that the cushioning material is necessarily satisfactory.

In view of the above points, the inventor of the present invention has been requested in Japanese Patent Application Laid-Open No. 221627/1992 as a cushioning material made of fiber by directly utilizing the elastic characteristics of the fiber itself. Excellent in various characteristics such as hardness, impact resilience, residual compression strain, and less sagging,
Moreover, we have already proposed a fiber cushioning material that has little change over time and is excellent in durability. This fiber cushion material
A high melting point fiber as a base fiber and a low melting point fiber as a binder fiber having a lower melting point than the high melting point fiber are mixed to form a fibrous web, and the fibrous web is formed in a direction orthogonal to the thickness direction of the cushion material. It is manufactured by laminating on the fiber, heating it to a temperature between the melting points of both fiber components to melt the low-melting point fiber, and heat-sealing between the high-melting point fiber and the interlayer to stabilize the fiber. Since the webs are laminated in a manner orthogonal to the thickness direction of the cushion material, the direction of carding of the fibers in the fiber web is parallel to the thickness direction of the cushion material, and the fibers are Since it is in a standing state, the elastic properties of the fibers themselves are utilized as they are in the thickness direction of the cushioning material, and the various characteristics required for the cushioning material such as hardness, cushioning property, and compression residual ratio are excellent, Was, less sag, and has a good cushion material to change over time is also less durable.

[0004]

As described above, the fiber cushioning material previously proposed by the present applicant is obtained by laminating the fiber webs in a direction orthogonal to the thickness direction so that the fibers are cushioned. It is in a standing state, and the elastic properties of the fiber itself are utilized as they are in the thickness direction of the cushioning material, resulting in excellent hardness, cushioning properties, compression residual rate, etc. It has excellent durability. In the present invention, the fiber cushioning material is taken one step further to further improve the cushioning property, the compression residual strain characteristic, and the settling prevention effect, and at the same time, when it is used as a bed mattress or the like, the surface unevenness is caused. It is intended to provide a novel fiber cushioning material which has an acupressure effect and is also excellent in breathability.

[0005]

In order to achieve the above object, the fiber cushion material according to the present invention has a fiber web in which a high melting point fiber and a low melting point fiber having a lower melting point are mixed in the thickness direction. Laminated in a direction orthogonal to each other, the high melting point fibers are fused by fusion of the low melting point fibers, and the respective fiber webs are heat-sealed, and unevenness is formed on the surface thereof, and the uneven surface is latex. It is characterized by being applied. Furthermore, in the present invention, the latex applied to the surface of the fiber cushion material is a fiber cushion material containing granular or powdered far infrared radiation ceramics, and a nonwoven fabric is attached to the top surface of the uneven surface. We provide the following cushion material made of fiber.

Further, in the present invention, a fiber web in which a high melting point fiber and a low melting point fiber having a lower melting point are mixed is laminated in a direction orthogonal to the thickness direction, and the high melting point fiber is melted to form the high melting point fiber. Between the melting point fibers, and the unit cushion material in which the respective fiber webs are heat-sealed, a plurality of unit cushion materials are laminated so that the laminating directions of the fiber webs in the vertically adjacent unit cushion materials are orthogonal to each other. A cushion made of fiber, characterized in that the unit cushion materials are adhered to each other with an adhesive, and unevenness is formed on the surface of the outermost unit cushion material layer, and latex is applied to the uneven surface. Provide the material. Furthermore, in the present invention, the latex applied to the surface of the fiber cushion material is a fiber cushion material containing granular or powdered far infrared radiation ceramics, and a nonwoven fabric is attached to the top surface of the uneven surface. Provided is a fiber cushion material.

Further, as a method for manufacturing the cushioning material according to the present invention as described above, high melting point fibers and low melting point fibers having a lower melting point than the high melting point fibers are mixed and opened to form a fiber web, The fibrous webs are laminated in a direction orthogonal to the thickness direction of the cushion material, the low melting point fibers are melted by heating the fibrous webs at a temperature between the melting points of the both fibers, and the high melting point fibers are formed by the melted low melting point fibers. And the fiber webs are fused and cooled to obtain a plate-like cushion material, latex is applied to the surface of the plate-like cushion material, and this is heated and pressed with a mold having irregularities. The present invention provides a method for producing a fiber cushion material, which comprises molding to form irregularities on the surface coated with the latex.

[0008]

As described above, in the fiber cushion material according to the present invention, the fibrous web is laminated in a manner perpendicular to the thickness direction of the cushion material, and the direction of carding of the fibers in the fibrous web is the cushion. Since the fibers are parallel to the thickness direction of the material and the fibers stand up in the cushion material, the elastic properties of the fibers themselves are utilized as they are in the thickness direction of the cushion material, and the hardness, cushioning property, and compression residual rate are maintained. It has excellent characteristics required as a cushioning material, etc., less fatigue, less change over time, and superior durability.
The unevenness formed on the surface has an acupressure effect, and the concave portion of the unevenness serves as a ventilation space, which is extremely excellent in breathability. In addition, the latex applied to the uneven surface exerts a reliable acupressure effect by reinforcing the uneven portion, and more securely prevents the cushion material from sagging, and at the same time, it is orthogonal to the thickness direction. To prevent cracks between the fibrous webs laminated to each other.

Further, in the case where the surface latex layer contains far-infrared radiating ceramics, when this cushion material is used for batting of a bed mattress, etc., the far-infrared radiating ceramics are heated by the body temperature of the person to be far-infrared rays. By radiating, it is possible to expect a therapeutic effect by far infrared rays.

When the nonwoven fabric is attached to the top surface of the uneven surface, the tactile feel of the uneven surface is softened, the depression to the uneven portion is prevented, and the cushion material in the uneven portion is provided. It also has the effect of preventing cracking.

Further, a plurality of the unit cushion materials vertically adjacent to each other are laminated so that the laminating directions of the fiber webs are orthogonal to each other, and irregularities are formed on the surface of the unit cushion material layer located at the outermost layer. In the case of a fiber cushion material coated with latex, since the fiber webs of the unit cushion materials vertically adjacent to each other are orthogonal to each other, the fatigue of the entire cushion material is more reliably prevented and the cushion material is hard and cushioning. It is also excellent in the acupressure effect and breathability as described above due to the unevenness of the surface.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing one embodiment of a fiber cushion material 1 according to the present invention. This fiber cushion material 1 has corrugated irregularities 2 formed on its surface. A latex layer 3 is formed on the surface of the unevenness 2.

In this fiber cushion material 1, a fiber web 11 in which high melting point fibers and low melting point fibers having a lower melting point are mixed is orthogonal to the thickness direction v of the cushion material as shown in FIG. As shown in FIG. 3, latex 3 is applied to the surface of the plate-like cushioning material 10 made of fibers laminated in the direction h and thermally fused between the high melting point fibers and between the respective fiber webs by melting the low melting point fibers. Then, as shown in FIG. 4, this is heated and pressure-molded in a mold 4 having corrugated irregularities to form irregularities 2 on the surface coated with the latex 3.

The detailed manufacturing method of the plate-shaped cushioning material 10 is described in the above-mentioned earlier application, Japanese Patent Laid-Open No. 4-221627.
It is as described in the publication. That is, a low melting point fiber is mixed with a high melting point fiber serving as a base, and this is carded with a drum type card machine or the like, or a fiber web formed by using a random webber or the like is added in a vertical direction at predetermined intervals. The fiber web is continuously supplied and laminated between a pair of belt conveyors, and the laminated body of the fiber web is passed through a hot air heating unit at a temperature between the melting points of both fibers, for example, about 145 ° C. to melt the low-melting-point fibers and raise the temperature. After the fibers such as the melting point fiber and the natural fiber are fused, they are cooled by cold air or the like.

The high melting point fiber as the base fiber in the raw material fibers has a relatively high melting point such as polyester, polypropylene, acryl, nylon, etc., and has high compressive elasticity and high strength and excellent cushioning properties. Synthetic fibers, or those obtained by crimping these fibers and having a crimp degree of a specific value or more to further improve the elastic properties may be used. The fiber length of the high melting point fiber may be a normal staple length of about 30 to 100 mm, and the fineness is 1 to 3 mm.
A general one of about 0 denier may be used. When the melting point of the high melting point fiber is low, the heat resistance of the cushion material as a product may become a problem, so the melting point is preferably 180 or less.
A fiber having a temperature of about ° C or higher is used, but a fiber having a temperature of 200 ° C or higher is more preferable. As the base fiber, it is also possible to use a mixture of the synthetic fiber as described above with raw cotton, wool, silk or the like having a humidity controlling property such as vegetable or animal natural fiber, or rayon.

Further, the low melting point fiber as a fusion component in the raw material fiber has a lower melting point than the high melting point fiber, has a specific softening point and melt viscosity, and is mixed with the high melting point fiber to obtain a high melting point. The hot-melt adhesive fiber is capable of being melted by heating at a temperature equal to or lower than the melting point of the melting point fiber to fuse the high melting point fiber serving as the base. As the component of the low melting point fiber, there are polyolefins such as polyethylene and polypropylene, and thermoplastic polymers such as polyamide, polyester, polyacrylonitrile, polyvinyl alcohol, polyvinyl chloride and polyvinylidene chloride, and the like. The fibers may be heat-adhesive conjugate fibers such as juxtaposed or core-sheath type conjugated polyester fibers with a high melting point component having a part of the surface composed of these low melting point components. Also in the case of this low melting point fiber, the fiber length and the fineness are not particularly limited, and the fiber length may be about 30 to 100 mm and the fineness may be about 1 to 30 denier. As the melting point of the low melting point fiber (low melting point component), it is preferable to use one having a melting point lower than that of the high melting point fiber by 50 ° C. or more.

As the mixing ratio of the high melting point fiber and the low melting point fiber, the weight ratio of high melting point fiber: low melting point fiber is usually in the range of 90:10 to 50:50. Generally, the high melting point fiber is 70 to 80% by weight, and the low melting point fiber is 30 to 20%.
About wt% is sufficient. In this case, as the proportion of the high-melting point fiber increases, that is, as the proportion of the low-melting point fiber decreases, the fusion point between the fibers decreases to form a soft cushioning material, and conversely the blending ratio of the low-melting point fiber increases. Accordingly, the fusion point is increased to form a hard cushion material. Therefore, the cushion material having a desired hardness can be obtained by adjusting the mixing ratio according to the purpose of the cushion material.

Then, for example, 60% by weight of high melting point polyester fiber as the high melting point fiber, 10% by weight of natural fiber raw cotton, and 30% by weight of the composite low melting point polyester fiber as the low melting point fiber are mixed. Then, this is carded with a drum type card machine or the like, or a fiber web having an appropriate thickness is formed using a webber such as a random webber. The thickness of this fiber web is usually about 1 to 5 mm. This fibrous web is continuously supplied between a pair of vertical belt conveyors to be folded and continuously laminated in a mat shape. At this time, the density of the fiber web laminate increases as the feeding speed of both belt conveyors increases, and conversely, the density of the laminate decreases as the feeding speed decreases. This density is appropriately set according to the hardness of the intended cushion material, but normally 0.005 to
About 0.15 g / cm ³ , preferably 0.01 to 0.1
It is about 0 g / cm ³ . The distance between the two belt conveyors is appropriately adjusted in consideration of the thickness of the cushion material to be manufactured, the manufacturing efficiency, the thermal efficiency in the heating section in the subsequent step, the cooling efficiency in the cooling section, etc., but is usually up to about 100 mm. It is preferable in terms of manufacturing process, thermal efficiency and the like.

As the heating means used for the heat treatment of the laminated fiber webs, in addition to the above-mentioned method using hot air, hot-water steam, high-pressure steam or other wet heat type ones, electric heat, high frequency heating, infrared rays, infrared rays Various heating means such as a dry heat type such as reddish light can be used. Whichever means is used, in the present invention, since the fibrous webs are laminated in the direction orthogonal to the thickness direction, this heating is efficiently performed inside the laminate.

The cushion material manufactured as described above has its upper and lower surfaces made flat by a slitter or the like, if necessary, and is sliced to a predetermined thickness. Etc., cut it off, and align the ends,
As shown in FIG. 2, a plate-like cushion material 10 having a desired size in which the upper and lower surfaces and the left and right end surfaces are smooth can be obtained. This plate-like cushion material 10 is, as shown in the figure, a plate-like cushion material 10
The fiber webs 11 are laminated in the width or length direction h of the cushion material 10 orthogonal to the thickness direction v of the plate-like cushion material 10 in the thickness direction v of the plate-like cushion material 10. Since it is in a standing state, the hardness and elastic properties of the raw material fibers themselves are directly utilized in the hardness and elastic properties of the cushion material in the thickness direction,
It exhibits favorable hardness as a cushioning material and excellent elastic properties against load, and has little durability such as wet heat aging due to aging such as urethane foam and has excellent durability.

Next, in the present invention, the latex 3 is applied to the surface of the plate-like cushion material 10 manufactured as described above, as shown in FIG. The latex 3 is applied to the surface of the cushion material 10 by spraying or the like, and the latex 3 applied to the surface heats and presses the surface of the plate-like cushion material 10 as described later. When the unevenness is formed by molding, the fiber webs 11 are prevented from being separated from each other, or the cushioning material is cracked at the uneven part, and the latex 3 reinforces the uneven part to more reliably settle the cushioning material. Can be prevented. There is no particular limitation on the application of the latex, and it may be adjusted according to the required surface hardness. Further, instead of this latex, a synthetic resin paint or the like can be applied, but in this case, it is desirable to use a relatively soft material after curing so that the surface of the cushion material does not become too hard. .

Then, as described above, latex 3 is applied to the surface.
As shown in FIG. 4, the plate-like cushion material 10 coated with is heated and pressure-molded by a mold 4 having irregularities to form irregularities 2 on the surface coated with the latex 3. In the illustrated example, the plate cushion material 10 is sandwiched between a corrugated mold 4 and a flat plate-shaped mold 5 to apply pressure from above and below, and the molds 4 and 5 are heated by steam heating or the like. By doing so, the unevenness 2 is formed on one surface of the plate-like cushion material 10 as shown in FIG. In the figure, 6 ... are steam holes appropriately formed in the molds 4 and 5, from which steam is supplied to the plate-shaped cushioning material 10 sandwiched between the molds 4 and 5 for efficient heating. This facilitates the formation of the unevenness 2.

The cushioning material heated and pressure-molded between the molds 4 and 5 as described above is demolded and then heated at 80 ° C.
According to the present invention, the moisture is removed by steam from the cushion material 10 by drying with moderate warm air or the like, and then the cushion material 10 is naturally left to cool to have irregularities 2 on the surface as shown in FIG. The fiber cushion material 1 is obtained. In the above embodiment, the unevenness 2 is formed on only one side of the cushion material 1.
However, the concavities and convexities 2 ... Can be formed on both surfaces thereof, for example, as shown in FIG. The latex 3 does not necessarily have to be applied to the surface on which the unevenness 2 is not formed.

The fiber cushion material 1 according to the present invention produced as described above can be used as a mattress or batting of a cushion or the like.
It can also be laid on the surface of a futon or the like. In this fiber cushion material 1, it is possible to obtain the acupressure effect by the unevenness 2 formed on the surface, and at the same time, the unevenness 2
By forming a space in the surface portion of the fiber cushion material 1 by this, it is extremely breathable, prevents moisture and suppresses the growth of mold and bacteria, and is hygienic at the same time.
It is also effective in preventing floor rubs when the patient is bedridden. Further, since the fiber cushion material 1 of the present invention has the fiber webs 11 laminated in the direction orthogonal to the thickness direction, it is easier to bend than the conventional fiber cushion material, but is extremely bent. In some cases, the fiber webs may be cracked, but since the latex layer 3 is formed on the surface, the fiber cushion material 1 may be cracked at the uneven portion, or the laminated fiber webs 11 may be separated from each other. In addition, since the unevenness is covered with the latex layer 3, there is little settling and the durability is excellent. Furthermore, when the latex layer 3 containing far-infrared radiation ceramics is formed on the surface, if this fiber cushion material 1 is used as a batting of a futon, a mattress, etc., the latex on the surface of this fiber cushion material 1 will depend on the human body temperature. The far-infrared radiation ceramics in the layer 3 is heated to emit far-infrared rays, and in addition to the acupressure effect due to the unevenness 2 as described above, a therapeutic effect due to the far-infrared rays can be expected.

Next, FIGS. 7 to 9 show an embodiment of a bed mattress 100 using the above-described fiber cushion material according to the present invention. The bed mattress 100 is formed by laminating a plurality of unit cushion materials, and in the illustrated example, three layers of unit cushion materials 110, 120, 130 are laminated, and each unit cushion material 110, 120. , And 130
In each case, a fiber web in which high melting point fibers and low melting point fibers having a lower melting point are mixed as described above is laminated in a direction orthogonal to the thickness direction, and high melting point fibers are obtained by melting the low melting point fibers. And between the fibrous webs are heat-sealed, and as shown in FIG. 8, a unit cushion material in the upper and lower adjacent unit cushions, that is, a unit in the direction of the fibrous web in the unit cushion material 110 on the upper surface and an intermediate unit. Cushion material 1
The direction B of the fibrous web in 20 and the direction B of the fibrous web in the unit cushion material 120 in the middle thereof and the direction C of the fibrous web in the unit cushion material 130 on the lower surface are laminated so as to be orthogonal to each other. Then, the unit cushion materials of each layer are bonded by an adhesive. Each unit cushion material 110, 1
The adhesive for bonding between 20 and 130 is not particularly limited,
For example, a quick-drying urethane adhesive or the like is used. Further, unevenness 2 ... Is formed on the surfaces of the upper and lower unit cushion members 110 and 130, and latex 3 ... Is applied to the uneven surface as shown in FIG.

As the unit cushion materials 110 and 130 constituting the upper and lower surfaces of the mattress 100, the fiber cushion material 1 according to the present invention can be used as it is. As the intermediate unit cushion material 120, the plate-shaped cushion material 10 that serves as a base when the fiber cushion material 1 is manufactured may be used.

Further, in the mattress 100 shown in the figure, nonwoven fabrics 7 and 7 are attached to the uneven surfaces formed on the upper and lower surfaces thereof. The non-woven fabric 7 is attached to the unit cushion materials 110 and 130 that form the upper and lower surfaces of the mattress 100.
It is affixed to the uneven surface of 1 through an adhesive. In this way, in the case where the nonwoven fabric 7 is attached to the uneven surface, when the mattress 100 is used for a bed, the feeling of unevenness on the surface is soft and the space between the adjacent convex parts is small. Are connected by the non-woven fabric 7, so that the unit cushion material 11 in the uneven portion is
It also has an effect of preventing the cracks of 0 and 130, and further, the non-woven fabric 7 prevents it from falling into the uneven portion.

Although the mattress 100 in the illustrated example is formed by laminating three layers of unit cushion materials, the number of layers of the unit cushion material layer is not particularly limited, and may be four or more layers. The thickness of the cushion material layer and the thickness of the entire mattress 100 may be appropriately set as needed.

[0030]

As described above, the fiber cushion material according to the present invention has the hardness of the base fiber itself in the raw material fibers,
Since various properties such as elasticity are utilized as they are in the thickness direction of the cushioning material, the cushioning material has a strong stiffness and little settling, and also has the acupressure effect due to the unevenness formed on the surface and the cushioning due to the unevenness. Since a space is formed on the surface of the material, it is excellent in breathability, and it is effective from the viewpoint of preventing rubbing of the floor while being hygienic by preventing moisture and preventing generation of mold and the like. In addition, since the unevenness is formed on the surface in this manner, there is an advantage that it is easily bent. Moreover, since the uneven surface is formed by applying latex, not only can the settling of the cushioning material be prevented more, but also when the unevenness is formed on the surface, the laminated fiber webs are peeled off, or, It is also possible to prevent the cushion material from cracking in the uneven portion when bent.

Further, in the case where the surface latex contains far-infrared radiation ceramics, when the cushioning material is used as a bed mattress, the far-infrared radiation ceramics are heated by the human body temperature to emit far-infrared radiation. By doing so, a therapeutic effect by far infrared rays can be expected.

Further, in the case where a non-woven fabric is attached to the top surface of the uneven surface, the feeling of unevenness on the surface is softened, cracking of the cushion material in the uneven portion is more reliably prevented, and It also prevents inward depression.

In the case where a plurality of unit cushion materials are laminated so that the laminating directions of the fibrous webs are orthogonal to each other, the fibrous webs of vertically adjacent unit cushion materials are orthogonal to each other so that the entire cushion material is formed. It is more suitable for use as a bed mattress, etc., because it prevents sagging more reliably, is hard, and has excellent cushioning properties. Furthermore, in the case where unevenness is formed on the surface of the unit cushion material layer located at the outermost layer and the latex layer is formed on the surface, a mattress excellent in acupressure effect due to unevenness of the surface, breathability, etc. is obtained. be able to.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a fiber cushion material according to the present invention.

FIG. 2 is a perspective view of a plate-shaped cushion material serving as a base of the fiber cushion material.

FIG. 3 is a side cross-sectional view of a plate-shaped cushioning material whose surface is coated with latex.

FIG. 4 is a side sectional view showing how unevenness is formed on the surface of the plate-like cushion material.

FIG. 5 is a side cross-sectional view of a fiber cushion material having surface irregularities.

FIG. 6 is a side cross-sectional view of a fiber cushion material having concavities and convexities formed on both sides.

FIG. 7 is a perspective view of a mattress using the fiber cushion material according to the present invention.

FIG. 8 is an exploded perspective view of a part of the mattress.

FIG. 9 is an enlarged perspective view of a part of the mattress.

[Explanation of symbols]

 1 Fiber Cushion Material 2 Unevenness 3 Latex 4 Mold 5 Mold 6 Steam Hole 7 Nonwoven Fabric 10 Plate Cushion Material 11 Fiber Web 100 Mattress 110 Unit Cushion Material 120 Unit Cushion Material 130 Unit Cushion Material

Claims (7)

[Claims] 1. A fiber web in which high-melting-point fibers and low-melting-point fibers having a lower melting point are mixed is laminated in a direction orthogonal to the thickness direction, and the low-melting-point fibers are melted to form a space between the high-melting-point fibers, Further, the fiber cushion material is characterized in that the fiber webs are heat-sealed to each other and the surface thereof is provided with irregularities, and latex is applied to the irregular surface. 2. The fiber cushioning material according to claim 1, wherein the latex applied to the surface contains granular or powdery far-infrared radiation ceramics. 3. The fiber cushion material according to claim 1 or 2, wherein a non-woven fabric is attached to the top surface of the uneven surface. 4. A fiber web in which high-melting-point fibers and low-melting-point fibers having a lower melting point are mixed is laminated in a direction orthogonal to the thickness direction, and the low-melting-point fibers are melted to form a space between the high-melting-point fibers, And a plurality of unit cushion materials in which the fiber webs are heat-sealed to each other are laminated so that the stacking directions of the fiber webs in the vertically adjacent unit cushion materials are orthogonal to each other, and the unit cushion material of each layer is Is adhered with an adhesive, and unevenness is formed on the surface of the unit cushion material layer located at the outermost layer, and latex is applied to the uneven surface. 5. The fiber cushioning material according to claim 4, wherein the latex applied to the surface contains granular or powdery far-infrared radiation ceramics. 6. The fiber cushion material according to claim 4 or 5, wherein a non-woven fabric is attached to the top surface of the uneven surface. 7. A high-melting-point fiber and a low-melting-point fiber having a lower melting point than the high-melting-point fiber are mixed and opened to form a fiber web, and the fiber web is orthogonal to the thickness direction of the cushion material. The high melting point fibers by melting the low melting point fibers by melting the low melting point fibers by heating it to a temperature between the melting points of the both fibers, and fusing between the respective fiber webs. Cooling to obtain a plate-like cushion material, applying latex on the surface of this plate-like cushion material, and heating and pressurizing this with a mold having unevenness to form unevenness on the surface coated with the latex. A method for producing a fiber cushion material, comprising: