JP2002285463A - Fiber composite and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel cushion body which is lightweight, has high cushioning properties, and also has excellent set resistance, air permeability, and productivity, a method for producing the same, and the cushion body. Vehicle. SOLUTION: This is a fiber composite comprising a fiber aggregate and a foam, wherein the foam is contained inside the fiber aggregate, and the porosity of the fiber composite is 70 to 98.5%.
A fiber composite, and a vehicle using the same.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an insulator,
More specifically, the present invention relates to a fiber cushion body used for a pad, a seat cushion, a cushion pad material, and the like. It relates to a cushion body. These are suitably used as a vehicle seat cushion, a vehicle carpet under cushion, a vehicle interior pad material, a vehicle insulator, and the like.

[0002]

2. Description of the Related Art Conventionally, polyurethane foams having excellent cushioning properties have been used for cushioning materials for automobile seats, underpad materials for carpets, matting materials for bedding, cushioning materials for cushions, and the like.

[0003] However, polyurethane foam has poor air permeability and high heat retention. For this reason, there has been a problem that "humidity" occurs on the contact surface with the human body under the scorching sun or the like, which causes discomfort. Further, in order to improve the cushioning property and the sag resistance, it is necessary to increase the bulk density, and there is a problem in weight and workability.

Accordingly, a fiber cushion body made of PET or the like has been developed as an alternative material to polyurethane foam. For example, Japanese Patent Application Laid-Open No. 57-35047 discloses a fiber cushion body obtained by adding a thermoplastic resin such as polypropylene or polyethylene to polyester. The body is disclosed.

[0005] However, the fiber cushion body using such thermoplastic fibers has a problem that the set resistance under a high-temperature atmosphere is inferior. To solve this problem, an attempt to increase the melting point of the binder component to improve the set resistance under a high-temperature atmosphere is effective. For example, JP-A-4-84906 and JP-A-5-156559 disclose this problem. A fiber cushion body in which a urethane-based binder fiber or a polyamide-based binder fiber is added to polyester staple fiber is disclosed.

[0006]

However, these fiber cushion bodies cannot be said to be sufficient when comprehensively considering air permeability, cushioning property, sag resistance, etc., and further improvement is required. . Further, when a binder component having a high melting point is mixed, it is necessary to increase the molding temperature of the fiber cushion body, so that the time of the heating / cooling process is lengthened, resulting in a problem of increasing the cost.

[0007] The present invention has been made in view of the above-mentioned problems of the prior art, and in addition to being lightweight and having high cushioning properties, has excellent sag resistance, air permeability, and the like.
It is an object of the present invention to provide a novel cushion body having both productivity and a method of manufacturing the same, and a vehicle including the cushion body.

[0008]

DISCLOSURE OF THE INVENTION The present invention is intended to provide a cushion body having excellent cushioning property and sag resistance by including a foam such as urethane foam inside a fiber aggregate, By adjusting the fiber diameter, softening temperature, etc. of the aggregate, it has been completed by focusing on the point that productivity can be improved. That is, the present invention is configured as follows for each claim.

According to a first aspect of the present invention, there is provided a fiber composite comprising a fiber aggregate and a foam, wherein the foam is included in the fiber aggregate, and the porosity of the fiber composite is reduced. It is a fiber composite characterized by being 70-98.5%.

A second aspect of the present invention is the fiber composite according to the first aspect, wherein the density of the fiber aggregate is 0.02 to 0.08 g / cm ³ .

According to a third aspect of the present invention, the fiber aggregate includes a main fiber serving as a matrix and a binder material having a lower softening point than the main fiber, and the main fiber is bonded by the binder material. The fiber composite according to claim 1, wherein:

The invention according to claim 4 is the fiber composite according to claim 3, wherein the main fiber has an average fiber diameter of 70 to 900 µm.

According to a fifth aspect of the present invention, the main fibers are polyester, nylon, polyacrylonitrile,
The fiber composite according to claim 3, wherein the fiber composite is one or more selected from the group consisting of polyacetate, polyethylene, polypropylene, linear polyester, and polyamide.

The invention according to claim 6 is characterized in that the binder material contains a component having a softening point lower than that of the main fiber by 20 ° C. or more.
It is a fiber composite described in the paragraph.

The fiber composite according to any one of claims 3 to 6, wherein the binder material comprises a component having a softening point of 80 ° C or higher. Body.

The invention according to claim 8 is the fiber composite according to any one of claims 3 to 7, wherein the binder material is a thermoplastic polyester or a silicone rubber elastomer. .

According to a ninth aspect of the present invention, the foam is a polyurethane foam.
9. The fiber composite according to any one of items 8 to 9.

[0018] The invention as set forth in claim 10 is that the foam
Density is 0.02-0.06 g / cm ^ThreeIs characterized by
The fiber composite according to any one of claims 1 to 9,
It is.

[0019] The invention according to claim 11, wherein the fiber composite has a density of 0.02 to 0.1 g / cm ^3. Complex.

The invention according to claim 12 is the fiber composite according to any one of claims 1 to 11, wherein the thickness of the fiber composite is 5 to 200 mm.

The invention according to claim 13 is the invention according to claims 1-1.
A vehicle provided with a seat cushion, a carpet under cushion, an interior pad material, or an insulator made of the fiber composite according to any one of items 2 to 4.

[0022] The invention according to claim 14 includes a step of placing a fiber assembly in a mold, a step of injecting a foam material into the mold, and a step of foam-molding the foam material. The method for producing a fiber composite according to any one of claims 1 to 12, comprising:

[0023]

According to the present invention configured as described above, the following effects can be obtained for each claim.

According to the first aspect of the present invention, by including the foam inside the fiber assembly, the fiber composite can be provided with excellent cushioning property and sag resistance. In addition, by adjusting the porosity of the formed fiber composite to the above range, the air permeability can be increased.

According to the second aspect of the present invention, by setting the density of the fiber aggregate to 0.02 to 0.08 g / cm ³ , continuous foaming of the foam contained therein can be promoted,
Cushioning properties and breathability of the fiber composite can be improved.

According to the third aspect of the present invention, by forming the fiber aggregate from a main fiber serving as a matrix and a binder material having a softening point lower than that of the main fiber, a structure capable of containing a foam inside. Can be suitably formed.

In the invention according to the fourth aspect, by setting the average fiber diameter of the main fibers to 70 to 900 μm,
Excellent sag resistance and cushioning properties can be provided.

In the invention according to claim 5, the main fibers are polyester, nylon, polyacrylonitrile,
By using one or more selected from the group consisting of polyacetate, polyethylene, polypropylene, linear polyester, and polyamide or a copolymer thereof, sag resistance and cushioning properties of the fiber composite can be improved. .

In the invention according to claim 6, the heat resistance of the fiber aggregate is reduced by the thermal decomposition of the main fiber by setting the softening point of the binder material lower than the softening point of the main fiber by 20 ° C. or more. Can be prevented. Further, the productivity of the fiber aggregate can be increased.

According to the present invention, by setting the softening point of the binder material to 80 ° C. or more, a decrease in sag resistance when the fiber composite is exposed to a high-temperature atmosphere is suppressed. it can.

According to the invention described in claim 8, by using a thermoplastic polyester or a silicone rubber elastomer as a binder material, productivity and economic efficiency in producing a fiber composite can be improved. The sag resistance of the manufactured fiber composite can be improved.

According to the ninth aspect of the present invention, by using urethane foam as the foam, it is possible to enhance the productivity and cushioning property of the produced fiber composite.

In the invention according to the tenth aspect, by setting the density of the foam to 0.02 to 0.06 g / cm ³ , the sagging resistance and the cushioning property of the produced fiber composite are improved. Can be enhanced.

In the invention according to the eleventh aspect, the cushioning property and the air permeability of the produced fiber composite are improved by setting the density of the fiber composite to 0.02 to 0.1 g / cm ^3. Can be.

In the twelfth aspect of the invention, by setting the thickness of the fiber composite to 5 to 200 mm, a suitable cushioning property can be imparted to the fiber composite to be produced.

According to the thirteenth aspect of the present invention, there is provided a vehicle seat cushion, a carpet under cushion,
The effects of claims 1 to 12 can be imparted to the interior pad material or the insulator.

According to the fourteenth aspect, the fiber composite of the first to twelfth aspects can be suitably obtained.

[0038]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to a fiber composite comprising a fiber aggregate and a foam, wherein the foam is contained inside the fiber aggregate, and the porosity of the fiber composite is 70%. ９８98.5%.

FIG. 1 shows a schematic diagram of a cross section of the fiber composite. The fiber composite is composed of a fiber assembly 6 and a foam 5,
The foam material 5 covers the periphery of the fiber assembly 6 and the foam 5 enters the space between the fibers. Looking partially at the above configuration, as shown in FIG. 2, the foam 5 is wrapped around the fibers constituting the fiber assembly 6, and a space 7 exists between the fibers. It is configured in such a state. By securing this space, air flow becomes possible and air permeability can be improved. That is, the present invention makes use of the properties of the fiber assembly and the foam, respectively, and can impart excellent cushioning and sag resistance to the fiber composite, and the porosity of the formed fiber composite within the above range. By adjusting the air permeability, the air permeability can be increased. For this reason, even when applied in a high-temperature environment, "smell" on the contact surface
Discomfort or the like due to the above can be reduced.

In the present invention, the porosity is a value obtained by taking a photograph of a cross section of the fiber composite (in the case of forming a sheet, measuring a cross section in the thickness direction of the sheet) and determining the porosity by image processing. Yes, 5 to 10 points are cut out from a fiber composite having the same composition, and the average value is taken. Specifically, the following formula (1):

[0041]

(Equation 1)

Is the average of the numerical values given by

In the present invention, a fiber composite refers to a material having a composite structure in which a foam is contained inside a fiber assembly,
Various nonwoven fabrics, knitted and woven fabrics, and the like can be used. Also,
In the present invention, `` contained inside the fiber assembly '' refers to a state in which the fibers are combined and formed on the fiber surface or between the fibers forming the fiber assembly, and as a specific form including the foam, The form in which the foam is buried in the void portion in the fiber assembly or the form in which the surface of the fiber constituting the fiber assembly is coated may be integrated, so that the effects of the present invention can be obtained. It is not particularly limited as long as it is satisfied.

The fibrous aggregate is not particularly limited as long as it can contain a foam, but the foam is contained therein to ensure sufficient air permeability of the formed fiber composite. To achieve a density of 0.02-0.08 g / cm
It is preferably ³ . By adjusting the density within the above range, continuous foaming of the foam can be promoted, and the cushioning property and air permeability of the fiber composite can be enhanced. In addition, the density of the fiber aggregate refers to an average apparent density, which can be calculated by measuring mass with respect to volume.

The fiber aggregate includes a main fiber serving as a matrix and a binder material having a lower softening point than the main fiber.
It is preferable that the main fibers are bonded by a binder material. With such a configuration, a structure that can include a foam inside can be suitably formed.

In the present invention, the main fiber refers to a matrix of a fiber assembly, that is, a fibrous compound as a main component, and includes polyester, nylon, polyacrylonitrile,
It is preferable to use one or a combination of two or more of polyacetate, polyethylene, polypropylene, linear polyester and polyamide. Among them, polyester is most preferable in consideration of easy availability, economy, and compatibility between cushioning property and sag resistance. More specifically, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and those obtained by substituting the ethylene glycol component of PET with another glycol component (for example, polyhexamethylene terephthalate (PH)
T)), PET in which the terephthalic acid component is replaced by another dibasic acid component (for example, polyethylene naphthalate (P)
EN)) and their copolymers.

The average fiber diameter of the main fibers is preferably from 70 to 900 μm in order to obtain excellent sag resistance. Further, by using a main fiber having an average fiber diameter in the above range, excellent cushioning properties can be imparted in addition to sag resistance. That is, when compounding the fiber aggregate and the foam, the fiber aggregate and the foam are combined in a form that is tied to the fiber aggregate, but at this time, the foam becomes closed cells, It can be prevented from being discharged to the outside of the fiber assembly. In the present invention, the average fiber diameter refers to the average value of the diameter of the main fiber used in the fiber assembly, by taking a cross-sectional photograph using an electron microscope, by calculating the average value of the measured cross-section Can be calculated.

In the present invention, the binder material refers to a material contained in the fiber assembly and acting to adhere the main fibers to each other. The binder material has a softening point lower than that of the main fibers and exhibits thermoplasticity during molding. If so, there is no particular limitation. Fibers having a core-in-sheath cross-sectional shape are most desirable, but other examples include a side-by-side type, a full-melt type comprising a single component, a hot melt-shaped resin, and pellets. From the viewpoint of composition, silicon rubber elastomer is preferable in consideration of ease of handling and sag resistance,
Considering availability and economy, thermoplastic polyesters such as polyethylene terephthalate and polybutylene terephthalate are preferred. A copolymer may be used as the thermoplastic polyester.

The binder material does not have to use a single compound, but a plurality of binder materials can be used in combination. However, it is preferable that the softening point of at least a part of the binder material is lower by 20 ° C. or more than the softening point of the main fiber, and it is more preferable that the softening point of the entire binder material is lower by 20 ° C. or more than the softening point of the main fiber. If the difference in softening point is less than 20 ° C., the temperature at which the binder material is heat-sealed is close to the softening point of the main fiber, so that the main fiber is thermally decomposed and the heat resistance of the fiber aggregate may be reduced. Because there is.

The binder material preferably has at least a part of the binder material having a softening point of 80 ° C. or higher, and more preferably has a crystallization rate peak at 90 to 150 ° C. When applied to applications such as seat cushions and carpet underpad materials, or when reaction heat is generated in the foam molding process, the foam may be exposed to a high-temperature atmosphere of about 70 ° C. or 80 ° C. If the softening point of the binder material is too low, the sag resistance may decrease due to heat. In addition,
Also in this case, it is preferable that all the binder materials satisfy the above range.

In the present invention, the foam refers to a molded product having characteristics such as lightness, heat insulation and elasticity, which generate air bubbles, and examples thereof include polyurethane foam, polyethylene foam, and urea resin foam. Among the foams, urethane foam is suitable for reasons of easiness of production, expansion ratio, easy change of condition setting, versatility and the like.

If the density of the foam is too low, sufficient set resistance may not be obtained when the foam is exposed to high temperature conditions, so that the foam is preferably 0.02 g / cm ³ or more.
More preferably, it is 0.025 g / cm ³ or more.
On the other hand, if it is too high, the cushioning property may be reduced, so that it is preferably 0.06 g / cm ³ or less,
More preferably, it is 0.05 g / cm ³ or less. In the present invention, the density of the foam refers to an apparent average density and can be calculated by measuring the mass with respect to the volume.

If the fiber composite comprising the fiber aggregate and the foam is too low in density, there are too many voids in the fiber composite, and the cushioning property may be reduced. For this reason, it is preferable that the density of the fiber composite is 0.02 g / cm ³ or more. On the other hand, if the density is too high, the heat dissipation is reduced due to insufficient ventilation, and the comfort on the human body contact surface may be reduced. For this reason, it is preferably 0.1 g / cm ³ or less. In the present invention, the density of the fiber composite means an apparent average density, which can be calculated by measuring the mass with respect to the volume.

It is desirable that the thickness of the fiber composite is 5 to 200 mm. If it is out of this range, a suitable cushioning property may not be obtained when applied to a cushioning material or a pad material. In particular, it is difficult to manufacture a fiber composite having a size of less than 5 mm to sufficiently contain a foam, and it may be difficult to obtain a desired porosity over the entire fiber composite.

The shape of the fiber composite according to the present invention is not particularly limited, and the shape can be appropriately set according to the application site. The applicable site is not particularly limited, and can be applied to various uses that require cushioning properties. However, application to a vehicle is particularly preferable. FIG. 3 shows portions where the fiber composite according to the present invention is preferably applied, that is, the seat cushion 1, the carpet under cushion 2, the interior pad material 3, and the insulator 4.

Next, the method for producing the fiber composite of the present invention will be described.

First, a fiber aggregate is synthesized. The method for synthesizing the fiber aggregate is not particularly limited, and can be synthesized using various known nonwoven fabric manufacturing methods and the like. Specifically, a main fiber such as PET and a binder material are mixed,
By heat-treating this, a fiber aggregate can be obtained. In order to adjust the fiber aggregate density, the density of the main fiber or the binder material may be adjusted in advance.

Next, a molding die having a desired shape is prepared, and the synthesized fiber aggregate is set in the molding die. By injecting the foam material here and performing foam molding in the mold,
A fiber composite in which a foam is contained inside the fiber aggregate can be obtained in a desired shape. When forming into a complicated shape, a plurality of fiber aggregates may be installed in the mold.

As described above, the fiber assembly is set in the mold,
When using a manufacturing method in which a foam is injected, performance selectivity is obtained. For example, it can be manufactured so that the air permeability of a certain surface is particularly high.

[0060]

<Example 1> An apparent density of 0.04 g / cm ³ was obtained by mixing a main fiber and a binder material and heat-treating the mixture.
(Fiber aggregate) was obtained. As the main fiber, PET fiber having an average fiber diameter of 150 μm is used, and as the binder material, a core-sheath type structure (PET is used for the core portion and PBT is used for the sheath portion)
/ Polycaprolactone copolymer; softening point 170 ° C).

The obtained non-woven fabric is placed in a mold, and a polyurethane foam raw material (foam density 0.03 g / cm ³ )
Is injected and foamed, so that the foam has been embedded in the nonwoven fabric, and has an average apparent density of 0.035 g / cm ³ and a thickness of 20.
mm cushion body (fiber composite) was obtained. The average porosity of the cushion body was 97.5%.

The properties of the obtained nonwoven fabric and cushion were evaluated according to the following criteria.

The “softening point” is defined in JIS K7206 (19
1999: Test load of 5 kgf, heating rate 50 ° C.
/ H.

The “average porosity” was obtained by taking a photograph of a cross section in the thickness direction of the fiber composite, and calculating the porosity according to the above equation (1) based on the image processing results. The measurement was performed several times, and the average value was defined as the average porosity.

"Sag resistance" refers to JIS K6401.
(1997; soft urethane foam for cushion), width 100 mm x length 100 mm x height 50 m
The compression residual strain rate at 70 ° C. was measured for the test piece of m.

<Example 2> The average fiber diameter of the main fibers was 90
The nonwoven fabric density was adjusted to 0.02 g / cm ³ as 0 .mu.m, except that the foam density was 0.02 g / cm ³ in the same manner as in Example 1, the average apparent density 0.02 g / c
A cushion body having an m ³ and a thickness of 35 mm was obtained. The average porosity of the cushion body was 98.5%.

Example 3 The main fiber had an average fiber diameter of 70
μm and the density of the nonwoven fabric was adjusted to 0.08 g / cm ³ ,
Example 1 except that the foam density was 0.06 g / cm ³
In the same manner as in the above, a cushion body having an average apparent density of 0.07 g / cm ³ and a thickness of 5 mm was obtained. The average porosity of the cushion body was 70%.

<Example 4> PET / PB as main fiber
A cushion body having an average apparent density of 0.035 g / cm ³ and a thickness of 20 mm was obtained in the same manner as in Example 1 except that the T copolymer was used. The average porosity of the cushion body was 9
7.5%.

Example 5 The main fiber had an average fiber diameter of 2
A cushion body having an average apparent density of 0.035 g / cm ³ and a thickness of 20 mm was obtained in the same manner as in Example 1 except that polypropylene having a size of 00 μm was used. The average porosity of the cushion body was 97.5%.

Example 6 An average apparent density of 0.035 g / c was obtained in the same manner as in Example 1 except that a silicon-based elastomer (softening point: 200 ° C.) was used as a binder material.
A cushion body having a thickness of m ³ and a thickness of 20 mm was obtained. The average porosity of the cushion body was 97.5%.

<Example 7> The foam density was 0.04 g / c.
A cushion body having an average apparent density of 0.04 g / cm ³ and a thickness of 200 mm was obtained in the same manner as in Example 1 except that m ³ was used. The average porosity of the cushion body was 97.5%.
Met.

<Comparative Example 1> A polyurethane foam raw material (foam density 0.04 g / c) was placed in the same mold as in Example 1.
m ³ ) was injected and foamed to obtain a polyurethane cushion material having an average apparent density of 0.04 g / cm ³ and a thickness of 20 mm. The average porosity of the cushion material was 98.5%.

Comparative Example 2 A cushion material having a thickness of 5 mm was obtained in the same manner as in Comparative Example 1. The average porosity of the cushion material was 98.5%.

Comparative Example 3 A cushion material having a thickness of 35 mm was obtained in the same manner as in Comparative Example 1. The average porosity of the cushion material was 98.5%.

Comparative Example 4 A cushion material having a thickness of 200 mm was obtained in the same manner as in Comparative Example 1. The average porosity of the cushion material was 98.5%.

Comparative Example 5 An apparent density of 0.04 g / m was obtained in the same manner as in Example 1 except that PET short fibers having an average fiber length of 51 mm and an average fiber diameter of 50 μm were used as main fibers.
A non-woven fabric of cm ³ and thickness of 20 mm was obtained.

<Comparative Example 6> An apparent density of 0.015 g / c was obtained by mixing a main fiber and a binder material and heat-treating the mixture.
It was obtained m ³ of non-woven fabric. The average fiber diameter is 1 as the main fiber
200 μm PET fibers were used, and polyethylene (softening point 110 ° C.) was used as a binder material.

The obtained non-woven fabric was placed in a mold, and a polyurethane foam raw material (foam density 0.02 g / cm ³ )
Is injected and foamed to obtain an average apparent density of 0.017 g / cm ³ and a thickness of 35 in which the foam is embedded in the nonwoven fabric.
mm cushion body was obtained. The average porosity of the cushion body was 99%.

<Comparative Example 7> An apparent density of 0.01 g / cm was obtained by mixing a main fiber and a binder material and performing heat treatment.
³ was obtained. The average fiber diameter is 70 as the main fiber
A μm PET fiber was used, and a fiber having a core-in-sheath structure (PET in the core, PBT / PEI copolymer in the sheath; softening point 120 ° C.) was used as the binder material.

The obtained non-woven fabric was placed in a mold, and a polyurethane foam raw material (foam density: 0.25 g / cm ³ )
Was injected and foamed to obtain a cushion body having an average apparent density of 0.2 g / cm ³ and a thickness of 3 mm in which the foam was embedded in the nonwoven fabric. The average porosity of the cushion body was 50%.

Table 1 shows the material properties used in the examples and comparative examples, and the properties of the obtained nonwoven fabric and cushion body.

[0082]

[Table 1]

Table 2 shows the sag resistance of the examples and comparative examples. As shown in the table, it was confirmed that the cushion body according to the present invention had excellent set resistance. In Table 2, “○, Δ, ×” indicates Comparative Example 1.
On the basis of the values of ４ to 基準, those having the same thickness were compared, and the extremely excellent one was evaluated as “○”, the inferior one was evaluated as “△”, and the extremely poor one was evaluated as “×”.

[0084]

[Table 2]

[Brief description of the drawings]

FIG. 1 is a schematic view showing a cross section of a fiber composite.

FIG. 2 is a schematic diagram showing a partial structure of a fiber composite.

FIG. 3 is a vehicle to which the fiber composite according to the present invention is applied.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 seat cushion 2 molded carpet underpad material 3 instrument panel pad material 4 dash insulator 5 foam 6 fiber aggregate 7 space

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) // B29K 105: 04 B29K 105: 04 B29L 31:58 B29L 31:58 F-term (Reference) 3B096 AD06 AD07 BA01 4F204 AA42 AD16 AG20 AH26 EA01 EB01 EB12 EF01 EF05 EL04 EL11 4L047 AA14 AA17 AA21 AA23 AB07 BA09 BB06 BB08 BB09 CA19 CB01 CB02 CB06 CB08 CC09

Claims (14)

[Claims] 1. A fiber composite comprising a fiber aggregate and a foam, wherein the foam is contained inside the fiber aggregate, and the porosity of the fiber composite is 70 to 98.5%.
A fiber composite characterized by the following. 2. The fiber aggregate having a density of 0.02 to 0.5.
Fiber composite according to claim 1, characterized in that a 08g / cm ^3. 3. The fiber aggregate includes a main fiber serving as a matrix and a binder material having a lower softening point than the main fiber, wherein the main fiber is bonded by the binder material. Item 3. The fiber composite according to Item 1 or 2. 4. An average fiber diameter of the main fiber is 70 to 90.
The fiber composite according to claim 3, wherein the thickness is 0 µm. 5. The method according to claim 3, wherein the main fiber is one or more selected from the group consisting of polyester, nylon, polyacrylonitrile, polyacetate, polyethylene, polypropylene, linear polyester and polyamide. Or the fiber composite according to 4. 6. The fiber composite according to claim 3, wherein the binder material contains a component having a softening point lower than that of the main fiber by 20 ° C. or more. 7. The binder material according to claim 3, wherein the binder material includes a component having a softening point of 80 ° C. or higher.
7. The fiber composite according to any one of claims 6 to 6. 8. The fiber composite according to claim 3, wherein the binder material is a thermoplastic polyester or a silicone rubber elastomer. 9. The fiber composite according to claim 1, wherein the foam is a polyurethane foam. 10. A foam having a density of 0.02 to 0.0
The fiber composite according to any one of claims 1-9, characterized in that a 6 g / cm ^3. 11. The fiber composite having a density of 0.02 to 0.02.
Claim, characterized in that a 0.1 g / cm ³ 1 to 1
0. The fiber composite according to any one of 0. 12. The fiber composite has a thickness of 5 to 200 m.
m.
Item 14. The fiber composite according to Item. 13. A vehicle comprising a seat cushion, a carpet under cushion, an interior pad material, or an insulator made of the fiber composite according to any one of claims 1 to 12. 14. The method according to claim 1, further comprising the steps of: placing a fiber assembly in a mold; injecting a foam material into the mold; and foam-forming the foam material.
13. The method for producing a fiber composite according to any one of items 12 to 12.