JP3159645B2 - Wading material for vehicle seat and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wading material for a vehicle seat having a soft feeling and an excellent cushioning property.
And its manufacturing method .

[0002]

2. Description of the Related Art As a wading material for a vehicle seat of this type, as shown in Japanese Utility Model Laid-Open No. 1-103400, a polyurethane foam having a large volume and a soft feeling and having excellent cushioning properties is used. However, there is a problem that since the strength of the polyurethane foam is insufficient, a high-quality skin material having excellent strength is used as a skin material covering the polyurethane foam, resulting in an increase in cost.

[0003] In order to solve such a problem, recently, there has been proposed a material in which a fiber web is used as a wadding material instead of a polyurethane foam. The former is soft because it is made to have sufficient peel strength by entanglement sufficiently, or by mixing heat-bondable fiber filaments in the fiber web and fusing the fiber filaments together during heat setting. The texture is difficult to obtain and is not suitable as a thick one, and the latter has problems such as poor sag resistance and high cost.

[0004]

The object of the present invention is to solve the above-mentioned conventional problems and to reduce or use no polyurethane foam having a problem in strength. In addition, the wading material for vehicle seats which has a soft feeling and also has excellent cushioning properties and has good resistance to settling even if it is thick, and for vehicle seats capable of mass-producing such wading material for vehicle seats at low cost An object of the present invention is to provide a method for manufacturing a wadding material.

[0005]

Means for Solving the Problems] The present invention has been made to solve the above problems, the heat on the surface of the core filament
Coating a lubricity-imparting resin coating that can withstand the set processing temperature
The main material is an appropriate amount of coated processed fiber filament
A wading material for a vehicle sheet formed by forming a fibrous web composed of countless fiber filaments mixed with high-melting fiber filaments into a wadding body having a predetermined thickness, wherein the wadding body has a minimum necessary for preventing peeling added to the fibrous web. and Haritoge processing unit state, and are not without partial fusion portion held by entanglement due to the thermal deformation of the high melting fiber filaments by heat-setting, the wadding present
The body is mixed with the above-mentioned processed fiber filament
Of high melting point fiber due to lubricity of resin
Pressed up and down due to slip at the contact point with Lament
A vehicle seat for wadding material, wherein the this <br/> the restoring force is configured to act effectively when the high melting point fiber
Heat setting temperature on the surface of the core filament
There was Kotin grayed lubricity imparting resin coating to withstand time
An appropriate amount of the processed fiber filament is
Mixed with high-melting fiber filament consisting of lament
A fiber web made of a countless number of fiber filaments is provided with a minimum number of needle punctures to prevent peeling and a large number of two ventilation holes arranged at a smaller interval than the product thickness. A high melting point fiber entangled and thermally deformed in a needle piercing portion disposed on the fiber web by performing heat setting at a heat setting temperature lower than the melting point of the high melting point fiber filament while compressing between the tossing press plates. As a result, there is no partial fused portion ,
High melting point fiber lubrication due to the lubricity of the resin coating
Ru der made more a method for producing a vehicle seat wadding material characterized by molding a wadding body of greater predetermined thickness restoring force in the slip with respect to the vertical direction of the pressure at the contact point with Iramento.

[0006] Such wading material for vehicle seats,
When used as the backside of an automobile seat cover in the same way as a conventional vehicle seat wadding material, the fiber web is mainly made of fine denier high-melting fiber filaments and this fiber web is necessary to prevent peeling. Partial entanglement in the minimum needle piercing part and no problem in peel strength due to entanglement without partial fusion of the high melting point fiber heat-set and heat-deformed at a temperature below the melting point In addition, since there are few needle pierced parts and there is no fused part, the characteristics of fine denier high melting point fiber filament are exerted, and it has a soft texture, and the vertical pressure is applied to the wadding body. It has a large restoring force when it is used and has excellent sag resistance.

[0007]

Next, the present invention will be described in detail with reference to the drawings. In the drawing, reference numeral 1 denotes a 300-600 g basis weight obtained by subjecting a countless fiber filament to a well-known fiber web formed into a flocculent shape by a carding machine and partially entangled.
It is a thick wadding body of about 5 to 20 mm in / m ² . The wadding body 1 mainly comprises a high-melting fiber filament 2 having a melting point of 150 ° C. or more and a fine denier such as a polyester fiber filament or a polyamide fiber filament having a denier of 3 denier or less. An appropriate amount of processed fiber filaments 5 coated with a lubricating resin coating 4 having a melting point much higher than the heat setting processing temperature and a low frictional resistance, such as a silicon resin or a fluororesin, is mixed with a core filament 3 such as a high melting point fiber filament. 20-30
The fiber web having a thickness of mm is formed into a predetermined thickness by performing a needle sticking process and a heat setting process. Although the core filament 3 is not necessarily crimped, if a high-melting-point crimped fiber filament is used as the core filament 3 similarly to the high-melting-point fiber filament 2, the wadding body 1 described later will be used. This is more preferable because the cushioning feeling and the restoring force are further improved.

This needle piercing process is not a large-scale needle piercing process as in the prior art, but is a needle piercing process with a pene number of about 10 to 50 needles / cm ^2, which is the minimum necessary for preventing fiber filament peeling. The fiber filaments may be partially entangled by the small needle piercing portion 6. In addition, the heat setting process is not so large as to perform the conventional process at a high temperature of 180 to 190 ° C. where the fiber filaments are melted and partially fused, and a large number of ventilation holes such as punching metal are provided. The distance between the two heat-set holding plates is 5-20, which is the product thickness.
While the fiber web is compressed in the vertical direction by passing through a heat-setting apparatus having a diameter of 130 mm, heat-setting is performed by hot air at a temperature lower than the melting point of the high-melting-point fiber filament 2 of about 130 to 150 ° C. but heat-settable. The partial entanglement in the needle piercing portion 6 provided on the fiber web by the needle piercing and heat setting under the conditions described above, and the high melting point fiber filament 2 thermally deformed in a compressed state. by partial fusion unit such Iue,
Lubricity of processed fiber filament 5 mixed in this
High melting point fiber filament due to lubricity of applied resin coating 4
It is formed into a predetermined thickness with a large restoring force against vertical pressurization due to slip at the contact point with No. 2, which is a characteristic configuration of the present invention.

The wadding body 1 may be obtained by subjecting only the fibrous web to the needle sticking process and the heat setting process under the above conditions. However, the backing fabric 7 such as a nonwoven fabric is attached to the back surface of the fibrous web. By performing the needle piercing process and the heat setting process, the backing cloth 7 having the needle piercing process is attached to the back surface of the wadding main body 1 as shown in FIG. To enhance the workability and tensile strength, or by adding a fiber web different from the fiber web in which the hot melt fiber filament is mixed with the high melting point fiber filament which is the main material with respect to the back surface of the fiber web, The hot-melt fiber filament is mixed with the high-melting fiber filament as shown in FIG. Wadding body 1 minute to fused
A different type of processed fiber web is attached to the back surface of the wadding body 1 as a cushion backing layer 8 to secure the thickness, or a pressure plate such as a soft polyurethane foam is attached to the back surface of the fiber web. By applying a needle sticking process and a heat setting process, a polyurethane foam as shown in FIG. 3 is attached to the back surface of the wading body 1 as a cushion backing layer 8 to secure a thickness and to provide more excellent elasticity. It goes without saying that the use of another member, for example, is also included in the scope of the present invention.

[0010] When the above-described structure is used in the same manner as the conventional wading material for a vehicle seat, the wadding body 1 is formed on a fibrous web composed of fine denier high-melting fiber filaments 2 to a minimum necessary for preventing peeling. Needle piercing part 6
And the high melting point fiber filament 2 is thermally deformed and entangled without partial fusion by heat setting under pressure, so that the fiber web is mechanically sufficiently entangled by needle sticking. A much softer texture than the one that has a peel strength by combining it and the one that has a heat-set fiber filament mixed in a fiber web and the fiber filaments are fused together during heat setting to give a peel strength. In particular, a suitable amount of the processed fiber filaments 5 coated on the surface with the lubricity-imparting resin coating 4 having sufficient heat resistance to withstand the heat-setting processing temperature is fine denier. because of are mixedly refractory fiber filaments 2, processed fiber filaments 5 is fusion with each other coated for lubricity providing resin film 4 Since the slip at the contact points of the innumerable fine denier high-melting fiber filaments 2 having no parts to be improved is improved, the restoring force when vertically pressed is applied, and the sag resistance is further improved. It is more comfortable to sit. Moreover, since the wadding body 1 is made of a fibrous web, there is an advantage that the polyurethane foam having a problem in strength can be reduced or not used at all.

In addition, as described above, the method of the present invention applies heat to the surface of the core filament 3 such as fine denier high melting point fiber.
The lubricating resin coating 4 that can withstand the heat treatment temperature
The appropriate amount of coated fiber filament 5
High melting point fiber filler such as crimped fiber filament
The fiber web consisting of countless fiber filaments mixed in the element 2 is subjected to the minimum needle piercing process to prevent peeling, and is compressed between the heat-set presser plates having a smaller interval than the product thickness. By performing heat setting at a heat setting temperature lower than the melting point of the high-melting fiber filament as the main material, the entanglement and the thermally deformed high-melting fiber filament in the needle piercing portion 6 provided on the fiber web are performed. There is no partial fusion part ,
High melting point fiber lubrication due to the lubricity of the resin coating
A wading body with a predetermined thickness that has a large restoring force against vertical pressing due to sliding at the contact point with the filament . In this way, there is a soft feeling and excellent cushioning resistance. It is possible to mass-produce an excellent vehicle seat wading material at low cost.

[0012]

As apparent from the above description, the wading material for a vehicle seat of the present invention has a soft feeling without reducing or using no polyurethane foam having a problem in strength and has a cushioning property. In addition, the wading material for a vehicle seat according to the present invention has an advantage that the seating comfort of a vehicle can be improved as a thick one. The production method of (1) has an advantage that the wading material for a vehicle seat having the above-mentioned features can be mass-produced at low cost. Therefore, the present invention greatly contributes to the development of industry as a wading material for a vehicle seat and a method for producing the same, which has eliminated the conventional problems.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first preferred embodiment of the present invention.

FIG. 2 is a sectional view showing a second preferred embodiment of the present invention.

FIG. 3 is a sectional view showing a third preferred embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wadding main body 2 High-melting-point fiber filament 3 Core filament 4 Lubricity-imparting resin coating 5 Processed fiber filament 6 Needle piercing part 7 Backing base fabric 8 Cushion backing layer

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kazuhito Kamezaki 33-1, Ryujin, Ryujincho, Toyota City, Aichi Prefecture Elegance Ryujin 207 (72) Inventor, Tsutomu Arakawa 5-1-1, Shimizucho, Toyota City, Aichi Prefecture Takashimaya Nikatsu Kogyo Shinryo 353 (56) References JP-A-2-74656 (JP, A) JP-A-62-137248 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B32B 1/00-35/00 D04H 1/00-18/00

Claims (9)

(57) [Claims] A heat set is applied to the surface of the core filament (3).
Coated with a lubricity-imparting resin coating (4)
A suitable amount of the processed fiber filament (5)
There wadding material der for vehicle seat molded into wadding body of refractory fiber filaments (2) to a predetermined thickness countless fiber filaments made of fibrous webs are mixed (1)
Thus, the wading body (1) is held by the tangling of the minimum necessary needle sticking part (6) for preventing peeling added to the fiber web and the thermal deformation of the high melting point fiber filament by heat setting. With no typical fused part
This wadding body (1) is
The lubricating resin coating of the processed fiber filament (5)
(4) Lubricating properties of high melting point filament (2)
The restoring force when pressed up and down by sliding at a point
A wading material for a vehicle seat, wherein the wading material is configured to function effectively . 2. The wading material for a vehicle seat according to claim 1, wherein the lubricity imparting coating (4) is a silicone resin coating . 3. The wading body (1) is provided on the back surface of the wadding body (1).
The backing fabric (7), which has been punctured with the needle body (1), is attached.
The wading material for a vehicle seat according to claim 1 or 2, wherein 4. The wading body (1) has a wad
A cushion backing layer (8) different from the main body (1) is attached.
The wading material for a vehicle seat according to claim 1 , wherein the wading material is used. 5. The method according to claim 1, wherein the cushion backing layer (8) is made of a high melting point fiber.
Mixing hot melt fiber filaments with the filament
Vehicle seat wadding material as claimed in claim 4, partially Ru fibrous web der were fused Te. 6. The cushion backing layer (8) is made of polyurethane.
Vehicle seat wadding material as claimed in claim 4 Ru Oh form. 7. The wadding book according to claim 7, wherein the cushion backing layer (8) is a wadding book.
Claims integrated with the body (1) by needle sticking
7. The wading material for a vehicle seat according to 4 or 5 or 6 . 8. A heat set on the surface of the core filament (3).
Coated with a lubricity-imparting resin coating (4)
A suitable amount of the processed fiber filament (5)
Countless fibers mixed with a certain high melting point fiber filament (2)
Fiber web made of fiber filament
Necessary minimum needle puncture processing and spacing than product thickness
Heat set with a large number of two ventilation holes with narrowed holes
The high-melting-point fiber filament is compressed while being compressed between the holding plates.
Heat set at a heat set temperature lower than the melting point of
In the needle piercing section provided on the fiber web
Entanglement and thermally deformed high melting point fiber filament (2)
There is no more fused part,
High meltability due to the lubricity of the resin coating (4)
Sliding at the point of contact with the point fiber filament (2)
Wading of specified thickness with large restoring force against pressure in the direction
A method for producing a wading material for a vehicle seat, comprising molding a main body (1) . 9. The finished thickness of the product is 5 to 20 mm, the basis weight.
In the range of 300 to 600 g / m ² , the number of penetration
9. The method for producing a wading material for a vehicle seat according to claim 8 , wherein the product is produced by a needle sticking process of cm ² .