JPH0445873Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a seat skin material that covers a cushion body and constitutes a furniture or vehicle seat.

(Prior Art) Seat upholstery materials made of fabrics that have a soft surface feel and excellent decorative properties are preferred.

However, when a single piece of fabric is used as a skin material, when the skin material is cut and sewn into a shape that covers the surface of the seat cushion, due to the good flexibility (deformability) and elongation of the fabric,
The skin material is often cut or sewn in a distorted manner, and sewing wrinkles are likely to occur in the skin material. In addition, twisting caused by the distortion of the skin material during cutting and sewing occurs in the skin material when it is attached to the cushion body, so the torsion tends to lift the skin material from the surface of the cushion body. may cause wrinkles. Furthermore, the handle or pattern of the upholstery may become distorted, and if the upholstery is made of pile weave, the pile may easily come off due to rubbing of the upholstery surface when the seat is seated. Therefore, a skin material has been proposed in which a layer of resin such as acrylic latex is applied to the back side of the fabric and cured, and the cured resin layer makes it difficult for distortion to occur when cutting and sewing the fabric, and also prevents the pile from coming off. ing.

However, a skin material with a cured resin layer formed on the back side has a hard surface feel due to the cured resin layer, which causes the problem that the soft surface feel which is an advantage of using fabric cannot be obtained. In addition, if the thickness of the cured resin layer is increased, the skin material becomes extremely hard and it becomes impossible to make the skin material conform to the surface shape of the seat cushion.To prevent this, the thickness of the hardened resin layer must be made thin. be done.
Therefore, there is also the problem that it is not possible to obtain a luxurious skin material with a voluminous feel.

(Problems to be Solved by the Invention) The present invention was devised in view of the above-mentioned points, and eliminates the occurrence of wrinkles due to distortion during cutting and sewing, and the misalignment of patterns and patterns, without impairing the soft surface feel of the fabric. Another object of the present invention is to provide a voluminous and luxurious seat skin material that solves the problem of pile shedding.

(Means for Solving the Problems) The gist of the present invention is that an elastic foam raw material is applied to the back surface of a surface member made of fabric, and a thin layer of elastic foam is adhesively formed. The seat skin material is characterized in that a soft foam layer having a back surface member as required is adhered to the back surface of the layer.

Note that the elastic foam raw material is preferably a polyurethane emulsion.

(Function) Since the surface member has a thin layer of elastic foam adhered to its back surface, it stretches and deforms together with the thin layer of elastic foam, and its elongation and flexibility are reduced. Limited by the thin layer of elastic foam. Moreover, the thin layer of elastic foam
Since it is directly formed from the elastic foam raw material applied to the back surface of the surface member, grooves are formed on the thin layer surface of the elastic foam in the areas where the weaving or knitting yarns of the surface member exist, and the grooves The weaving yarn or knitting yarn of the surface member is partially stuck in the area. Therefore, the adhesive area between the weaving yarn or knitting yarn of the surface member and the thin layer surface of the elastic foam becomes large, and the weaving yarn or knitting yarn is sandwiched in the grooves and firmly fixed, so that the surface member The member and the thin layer of elastic foam are more reliably integrated, and the original texture or stitch shape of the surface member is maintained, so that the elongation and flexibility of the surface member can be effectively suppressed. As a result, distortion and deformation during cutting and sewing of the skin material can be reduced and wrinkles can be prevented.

Furthermore, even if the surface member is made of pile weave, the roots of the pile are firmly adhered to the grooves on the surface of the thin layer of elastic foam, so that when the seat member is seated, there is no contact between the seated person and the surface material surface. The pile is less likely to come off due to rubbing against each other.

On the other hand, if a separately formed thin layer of elastic foam with a flat surface is adhered to the back side of the surface member with adhesive, the surface of the elastic foam is flat, so The weaving yarn or knitting yarn does not get stuck in the surface of the elastic foam as described above, and not only does the effect of maintaining the texture or the stitch shape of the surface member is small, but also the adhesion area between the surface member and the elastic foam is small. Since the adhesion force is not so large, the elongation and flexibility of the surface member cannot be effectively suppressed, and furthermore, there is a drawback that peeling of the surface member and pile shedding when the surface member is a pile weave are likely to occur.

On the other hand, regarding the feel of the surface of the skin material, the thin layer of elastic foam on the back of the surface member has elasticity, unlike a cured resin layer made of latex, etc., so its elasticity makes the surface of the skin material soft to the touch. Become something. In addition, if the thin layer of elastic foam is formed from a polyurethane emulsion, the polyurethane emulsion can be applied to the back surface of the surface member in a foamed state when forming the thin layer of elastic foam, and unlike ordinary polyurethane raw materials, the polyurethane emulsion can be applied to the back surface of the surface member. Since it is difficult to penetrate and does not ooze out onto the surface of the surface member, the oozing raw material will not stain the surface of the surface member, nor will the oozing raw material harden and impair the soft feel of the surface of the surface member.

In addition, polyurethane emulsion is mixed with a base material such as air in a foaming machine and applied to the back side of the surface member in a foamed state, and is formed as a thin layer of the elastic foam. It is difficult to obtain one with a thickness of about 0.5 to 2 mm.

Therefore, if the skin material is formed from only a thin layer of the surface member and the elastic foam, the skin material will be thin and a luxurious item with a sense of volume cannot be obtained. Therefore, in the present invention, a soft foam layer is adhered to the back side of the thin layer of elastic foam, and the thickness of the soft foam layer increases the thickness of the entire skin material, making the skin material luxurious and voluminous. be. Furthermore, since the soft foam layer suppresses the elongation and flexibility of the thin layer of elastic foam, the elongation and flexibility of the surface member can be suppressed more effectively, and the skin material during cutting and sewing. This makes it even more difficult for distortion to occur. Furthermore, the cushioning properties of the soft foam layer also improve the soft feel of the surface of the skin material.

In addition, the back member provided on the back side of the soft foam layer as necessary has the main purpose of protecting the back side of the soft foam layer, imparting flame retardancy, and improving the slippage of the back side of the skin material when the skin material is applied. However, since the elongation and flexibility of the soft foam layer is suppressed by the back member, the elongation and flexibility of the front member is also limited by the back member, which causes problems during cutting and sewing. Since the skin material is less likely to be distorted, wrinkles or misalignment of the handle and pattern are less likely to occur.

(Example) The present invention will be described below with reference to FIG. 1, which shows a partial cross section of an example thereof.

The illustrated seat skin material 10 includes a surface member 12
, a thin layer 14 of elastic foam coated on the back surface of the surface member 12, and a soft foam layer 16 adhered to the back surface of the thin layer 14 of elastic foam. A back member 18 is bonded to the back surface of the foam layer 17.

The surface member 12 constitutes the surface of the skin material, and is made of fabric, and may be appropriately brushed or patterned, and may be woven into a pile weave or the like as required.

A thin layer of elastic foam 14 suppresses the elongation and flexibility of the surface member 12 and
This is to make the surface feel soft, and if the surface member 12 is a pile weave, it is to prevent the pile from coming off. This thin layer 14 of elastic foam is formed by heating and curing a polyurethane emulsion applied to the back surface of the surface member 12 to a predetermined thickness using a doctor knife or the like.
It usually has a thickness of about 0.5 to 2 mm. Various known polyurethane emulsions can be used, but for example, a polyurethane emulsion obtained by emulsifying a polyurethane solution, or a polyurethane prepolymer made of a polyether polyol or polyester polyol and a polyisocyanate is emulsified, and a chain extender is added thereto. Examples thereof include polyurethane emulsions whose chains have been extended by oxidation, and polyurethane emulsions containing conjugated diene and/or vinyl polymer emulsions. This polyurethane emulsion is mixed with air and foamed by a foaming machine, applied to the back surface of the surface member 12 in a foamed state, and cured by subsequent heating without seeping onto the surface of the surface member 12. is adhered to form a thin layer 14 of elastic foam. The elastic foam thin layer 14 formed in this way has a concave groove 22 at the adhesive part with the weaving yarn or knitting yarn 20 of the surface member, as shown in FIG. 2 showing an enlarged view of part A. The weaving yarn or knitting yarn 20 of the surface member is partially fitted into the concave groove portion 22 without being buried.

The foam layer 17 of the soft foam layer 16 is the skin material 10
In addition to increasing the overall thickness and making the skin material voluminous and luxurious, a thin layer of elastic foam 1
In addition to suppressing the elongation and flexibility of 4, the skin material 10
This is to further enhance the soft feel of the surface.
This foam layer 17 is preferably made of soft polyurethane foam, and its thickness is equal to or smaller than that of the skin material 1.
The thickness varies depending on the desired thickness, soft feel, etc., but is usually selected in the range of about 1 to 15 mm. The soft foam layer 16 can be formed by using an adhesive or by placing the soft foam layer on a polyurethane emulsion layer applied to the back surface of the surface member 12 and heating and curing the polyurethane emulsion. A thin layer 14 of elastic foam is glued to the back side.

The back surface member 18 is used as necessary to protect the back surface of the soft foam layer 16, provide flame retardance, improve the slippage of the back surface of the skin material, and further suppress elongation and deformation of the soft foam layer 16. It is made of woven fabrics such as tricot, stockinette, and gold cloth, or non-woven fabrics. This back member 18 is laminated and integrated on the back surface of the foam layer 17 by using an adhesive or by fusing the back surface of the foam layer 17 by thermally melting it.

The skin material 10 thus formed is cut into a predetermined shape, sewn into a shape that covers the seat cushion body, and is applied to the seat cushion body.

(Effects of the invention) The seat skin material of the present invention has a thin layer of elastic foam coated on the back side of a surface member made of fabric, and a soft foam layer adhered to the back side of the thin layer of elastic foam. The flexibility and elongation of the surface member are effectively suppressed by the thin layer of elastic foam and the layer of difficult-to-understand foam.
This made it possible to prevent the outer material from becoming distorted during cutting and sewing, which would otherwise occur due to the excessive flexibility and elongation of the fabric. As a result, it has become possible to prevent wrinkles in the skin material and misalignment of handles and patterns.

Furthermore, the elasticity and cushioning properties of the thin layer of elastic foam and the soft foam layer made it possible to make the surface of the skin material soft.

Furthermore, since the thin layer of elastic foam is applied and formed on the back side of the surface member, the weaving or knitting yarns that make up the surface member are firmly adhesively fixed to the thin layer of elastic foam, so that the surface member Even if the fabric is made of pile weave, the possibility of the pile falling out can be eliminated.

In addition, the soft foam layer made it possible to make the skin material voluminous and luxurious.

In this way, the seat upholstery of the present invention is resistant to wrinkles during cutting and sewing despite having a soft surface feel, does not easily shed pile, and is luxurious with a voluminous feel. By applying it to the seat cushion body, it is possible to obtain a luxurious seat that has no wrinkles on the surface and can maintain a good appearance for a long time.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a part of an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of section A in FIG. 10... Skin material, 12... Surface member, 14...
Lamination of elastic foam, 16... Soft foam layer, 18
... Back member, 20 ... Weaving thread or knitting thread.

Claims (1)

[Claims for Utility Model Registration] (1) An elastic foam raw material is applied to the back side of a surface member made of fabric, and a thin layer of elastic foam is adhesively formed, and a woven fabric is formed on the back side of the thin layer of the elastic foam. An upholstery material for a seat, characterized in that it is formed by adhering a soft foam layer that optionally has a backing member made of cloth, nonwoven fabric, or the like. (2) The seat skin material described in Claim 1 of the Utility Model Registration Claim, in which the elastic foam raw material is a polyurethane emulsion.