JPH03199455A - Solid structural skinning material for upholstery - Google Patents

Abstract

PURPOSE:To obtain the subject solid structural skinning material having high amount of void, able to maintain void even under pressure of human body and having excellent cushioning properties, air permeability and water volatility, etc., by combining face-side ground texture and reverse-side ground texture respectively having specific void indices and thicknesses with specific combining yarn. CONSTITUTION:Face-side ground texture 5 and reverse-side ground texture 6 are combined with combining yarn 7 composed of nylon 6, etc., having 0.07-0.4mm, preferably 0.117-0.33mm diameter by using a double Raschel loom, etc., to afford the aimed structural skinning material having 0.4-0.95, preferably 0.45-0.90 void index K calculated by the formula [w is METSUKE of cloth (g/m<2>); C is average density of fiber material (g/cm<3>); T is volume of cloth (cm3/m2)] and 1.5-10mm, preferably 2-7mm thickness.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to upholstery structure skin materials for car seats, office chairs, etc., specifically cushioning properties exhibiting a three-dimensional structure, features such as breathability, moisture evaporation properties, etc. This invention relates to a three-dimensional structure skin material for upholstery that has excellent properties and improves the environment inside the seat.

BACKGROUND OF THE INVENTION Conventionally used upholstery upholstery materials can be roughly divided into fabrics, moquettes, knits, knitted velvets, and other textile products, and leather-like resin products.

In the former case, the flat tissue has almost no cushioning properties, and when a person sits on it, no air permeability can be ensured between the skin material and the human body. In the case of moquette and knit velvet, when there is no pressure, it has a nape-like appearance, has voids, and has breathability and cushioning properties, but when a person sits on it, the nape-like shape is almost completely destroyed by the human body pressure, and there is almost no breathability. I can't wait. In the latter case, the conditions are worse than the former, and the cushioning properties and breathability are extremely poor. In terms of breathability, the environment between the seat surface and the human body when a person is sitting on it is humid, stuffy, and sticky, which is not at all desirable. Furthermore, in order to impart cushioning properties to the sheet,
Filling such as cotton or non-woven foam is essential.

Problems to be Solved by the Invention The purpose of the present invention is to solve these problems by providing cushioning and heat insulation properties necessary for upholstery upholstery materials.

The purpose is to improve air permeability, water evaporation, etc.

Means to solve problems The present invention provides cushioning properties to upholstery materials.

The present inventors have found that the environment inside the seat can be improved by using a fabric with a three-dimensional structure that has a large amount of voids in order to provide a breathable function and can ensure voids even under human body pressure.

Therefore, in the present invention, the diameter between the front side and the back side is 0.0.
7~(connected with a 1.4 mm connecting thread, the void index shown by the following formula is 0.4~0.95, and the thickness is 15~
It is made of a three-dimensional structured knitted fabric with a thickness of 10 mm.

K=1- (W/C-T) However, W is the basis weight of the fabric (g/rT?), C is the average density of the fiber material (g/cn), T is the volume of the fabric (cI
l/d) In the three-dimensional structure skin material for upholstery of the present invention, the ground texture on the front and back sides is made of threads of ↓ or two or more of synthetic fibers, regenerated fibers, natural fibers, and inorganic fibers, For example, it is knitted and woven using a warp knitting machine or a moquette loom that has two rows of needle beds, and can be arbitrarily selected from a flat structure like a normal knitted fabric or a mesh-like structure, and the same structure can be used on the front and back sides. It may be knitted or woven using a different structure. The front and back fabrics are connected by connecting threads made of synthetic fibers such as nylon 6°, nylon 66, and polyester with a diameter of 0.07 to 0.4 mm, and the front fabric is three-dimensionally constructed on the back fabric. As a result, the amount of voids is increased, providing cushioning properties and breathability, supporting human body pressure when a person sits on it, and at the same time exhibiting a water evaporation effect, improving the environment inside the seat.

If the diameter of the connecting thread is less than 0.07 mm, it will not be able to support the pressure of the human body when a person sits on it, making it difficult to achieve the purpose of the upholstery upholstery material of the present invention. Also, 0.
If it exceeds 4 mm, the rigidity of the connecting yarn will be too strong, making it difficult to knit and weave.

In order to obtain mechanical suitability as a three-dimensional structure fabric for upholstery, it is preferable to use a synthetic fiber monofilament yarn with a diameter of 11.117 to 0.33 mm or a multifilament with a small number of filaments. The density, arrangement, direction, etc. of the connecting threads may be appropriately selected and set according to the required performance.

Further, the fabric that is the three-dimensional structure skin material for upholstery of the present invention needs to have a void index expressed by the above formula of 0.4 to 0.95 and a thickness of 1.5 to 10 mm. The void index indicates how much void there is in the actual fabric by subtracting the volume of the threads constituting the fabric from the apparent volume per unit area. Note that the average density of the fiber materials is determined by weighted average of the densities of each fiber material. When the void index is less than 0.4, the yarn density is high;
Cushioning properties are impaired, making upholstery work difficult and resulting in poor weaving and weaving properties. On the other hand, the void index is 0.9
If it exceeds 5, the yarn density will be too low, the cushioning properties will be poor, and the designability as an upholstery material will not be maintained.
It becomes an issue in terms of quality. From a practical standpoint, the functional void index is preferably 045 to 0.90. If the thickness is less than 1.5 mm, the cushioning properties will be poor, the three-dimensional shape will be ambiguous, and the effect of improving the inside environment of the seat will be reduced. If the thickness exceeds 10 mm, it will be difficult to support the pressure of a person's body when sitting on it. becomes. Functionally 2mm
~7 mm is the preferred thickness necessary to improve the environment within the sheet.

The three-dimensional structure fabric having the above structure will be used as the upholstery material, but this three-dimensional structure fabric may be used as it is, or may be provided with a backing if necessary.

Function The present invention connects the front side fabric and the back side fabric with a connecting thread having an appropriate thickness necessary to construct a three-dimensional structure, and secures a relatively large gap between the front side fabric and the back fabric. Because it is a three-dimensional structured fabric, it has excellent compression elasticity and breathability. This means that when a person sits on the seat, the appropriate rigidity of the connecting threads located vertically that form the three-dimensional shape prevents the fabric from receiving body pressure while maintaining voids within the fabric. It also provides cushioning properties. Furthermore, the voids secured within the fabric promote breathability, which facilitates the release and evaporation of moisture within the sheet or between the sheet and the human body. As described above, the present invention provides a chair upholstery material that has excellent cushioning properties and also has the effect of improving the in-seat environment.

Example Embodiments of the present invention will be described below based on the drawings.

The upper figure is a schematic cross-sectional view of a chair using a three-dimensional structure skin material according to an embodiment of the present invention, FIG. FIG. 1 is a schematic cross-sectional view of a three-dimensional structure fabric that is a three-dimensional structure skin material.

In the figure, the fabric 1, which is the three-dimensional structure skin material, has a flat front side fabric 5 and a flat back side fabric 6.
Vertically arranged connecting thread 7 with a diameter of 0.07 to G and 4 mm
It is connected three-dimensionally and has a void index of 0.4.
~0.95 and a thickness of 1.5 to 10 mm.

The fabric 1 is attached to cover the padding 2 on the under panel 3 attached to the chair frame 4.

The fabric 1 used for the upholstery material above has appropriate cushioning properties, compressive elasticity, high porosity, excellent breathability, heat dissipation effect, etc., and is comfortable to sit on, maintaining a comfortable environment inside the seat. be able to.

In the three-dimensional structure fabric of the embodiment shown in FIG. 4, a flat front fabric structure 8 and a flat back fabric fabric 9 are connected by connecting threads 10 arranged obliquely in a zelkova shape.

In addition, the three-dimensional structure fabric of the example shown in FIG. 5 has a front side fabric 11 which is flat but has different textures, and a flat back fabric 12 which are connected by connecting threads 13 arranged in a zelkova shape. ing.

Further, in the three-dimensional structure fabric of the embodiment shown in FIG. 6, a front side fabric 14 in the form of a quadrilateral mesh and a back side fabric 15 in the form of a flat plate are connected by vertically arranged connecting threads 16.

The three-dimensional structure fabrics of the embodiments shown in FIGS. 4 to 6 have substantially the same effects as the three-dimensional structure fabric 1 shown in FIGS. 2 and 3 as upholstery materials.

Next, specific examples of the three-dimensional structure fabric which is the three-dimensional structure material for upholstery of the present invention will be described. Figure 2.

The three-dimensional structured fabric shown in FIG. 3 was prepared as follows.

Ester filament mix spun yarn 30/2' for front fabric 5
S, using ester multifilament 250d/481 for the backing fabric 6, and using a nylon monofilament yarn with a diameter of 0.205 mm for the connecting yarn 7, as shown in FIG. A three-dimensional structured fabric was knitted with the tissue.

The back fabric structure 6 was an inlay structure using reeds L6 in consideration of the dimensional stability of the fabric. The connecting thread 7 is the reed L3. By L4, a three-dimensional shape was constructed by vertically connecting the front and back ground textures 5 and 6. In addition, the reeds L2 constitute the front side fabric 5, and the reeds 5 serve as a chain structure to suppress warp elongation. In order to stabilize the physical properties of the fabric, the knitted three-dimensional structure fabric was rolled up in an expanded form on a split drum-shaped reel of a dyeing machine equipped with a split drum-shaped reel with a diameter of 80 cm that can absorb the shrinkage of the fabric due to heat, and heated at 98°C. After relaxing scouring treatment with water for 30 minutes, 2%
Overfeeding was carried out, and finishing setting was performed at 170° C. for 1 minute. The obtained three-dimensional structure fabric has a void index of 0.
83. The thickness was 3.4 anus.

The obtained three-dimensional structure fabric was subjected to the rug test JISL10.
21, the compressibility under load and the compressive elastic modulus after unloading were evaluated using a compressive elasticity tester.

The results are shown in Table 1.

(Left below) (Comparative Example) Table 1 A Berberati processed product knitted using a Double Raschel 22G (manufactured by Karl Mayer) warp knitting machine, which belongs to the category most commonly used as a car seat skin material, was used as a comparative example. The fiber material used in the above-mentioned Berberati processed products uses two reeds for the base structure, and polyester multifilament 10
0d/241 and polyester multifilament 75d/361 regular yarn and polyester cationic dyeable multifilament yarn 75d as pile yarn.
/361 was supplied and knitted with a checkered checkered pattern. Dyeing and finishing were carried out using the commonly used method of pre-setting → liquid jet high-pressure dyeing - drying → napping and knee finishing, resulting in a Berberati processed product with a density of 28 rugs/inch and 75 courses/inch. It is.

As is clear from Table 1, the connecting threads that connect the front fabric and the back fabric have appropriate rigidity, and therefore exhibit excellent compression resistance and compression elasticity. This has excellent cushioning properties, and even when pressurized, a considerable amount of voids are secured within the fabric, improving breathability and promoting moisture evaporation, creating a comfortable environment inside the seat. The effect of improving the condition can be obtained.

In addition, heat dissipation performance was evaluated in order to know moisture evaporation and air permeability. Examples used in this case in Table 1.

The same fabric as the comparative example was used. The evaluation method was to stack two test pieces with the − side 30 cm with the front sides facing each other,
A heating element was inserted into the center between the test pieces, and the ratio of electricity consumption required to maintain the heating element at 40°C was determined.

The results are shown in Table 2.

Table 2 As shown in Table 2, the electricity consumption of the fabric of this example is 110.69145 times higher than that of the comparative example, Berberati fabric, which is most commonly used as a car seat material, and the amount of heat dissipated is correspondingly higher. is large. This proves that the sheet has excellent air permeability, and results in promoting the evaporation of moisture within the sheet.

Effects of the Invention As described above, when the three-dimensional structure fabric of the present invention is used as an upholstery material, the connecting threads connecting the front and back tissues have an appropriate rigidity with a diameter of 0.07 to 0.4 mm. The void index is 0.4~0.95, and the thickness is 1.5~
Since it is 10 mm, it provides excellent cushioning for comfort after upholstering the chair, and at the same time has high compression resistance.
Since a considerable amount of air space is secured between the front and back tissues to provide breathability, moisture can be easily drained due to breathability, improving the environment inside the seat and creating the optimal chair upholstery with excellent comfort. Used as a skin material.

[Brief explanation of drawings]

The drawings show embodiments of the present invention; FIG. 1 is a schematic sectional view of a chair using a three-dimensional structure upholstery, FIG. 2 is a schematic perspective view of a main part of a three-dimensional structure fabric, and FIG. Schematic sectional view,
4 and 5 are schematic cross-sectional views of three-dimensional structure fabrics of other embodiments, FIG. 6 is a schematic perspective view of a three-dimensional structure fabric of still another embodiment, and FIG. 7 is shown in FIG. 3. FIG. 2 is a knitting organization diagram of a three-dimensional structure fabric. 1... Three-dimensional structure fabric, 2... Filling, 3... Under panel, 4... Chair frame, 5. 8. Il, +4
...Front surface texture, 6, 9. 12.15... Back side texture, 7. IQ, 13.16...Connecting thread, L1
~L6...Reed.

Claims (1)

[Claims] 1. The diameter between the front side and the back side is 0.07 to 0.4 m.
A three-dimensional structure skin material for upholstery consisting of a three-dimensional knitted fabric connected by m connecting threads, having a void index expressed by the following formula of 0.4 to 0.95, and a thickness of 1.5 to 10 mm. . K=1-(W/C・T) However, W: fabric weight (g/m^2), C: average density of fiber material (g/cm^3), T: fabric volume (cm^)
3/m^2).