JPH06114944A - Manufacture of sheet material of seat - Google Patents

Abstract

PURPOSE:To provide a method for manufacturing a sheet material for a seat at a low cost in which an excess part impossible to be used is not produced in the manufacturing steps, adhesive to be used can be suppressed to a necessary minimum and no harmful gas is generated. CONSTITUTION:A method for manufacturing a sheet material for a seat to be mounted on a seat body for a furniture, an automobile, etc., comprises the stems of scattering adhesive 22 on a special position of a pad material 21 previously cut corresponding to a shape of the seat, then laminating a front mounting material 23 similarly cut corresponding to a shape of the seat on the material 21 through the adhesive 22, and hot pressing the laminate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a seat material for a seat which is attached to a seat body of furniture, an automobile or the like. In detail, there is no excess part that cannot be reused in the manufacturing process, the adhesive used can be minimized, and no harmful gas is generated. Regarding

[0002]

2. Description of the Related Art Conventionally, as a seat material for a seat, as shown in FIG. 7, a long urethane sheet 1 wound in a roll shape is used as a pad material. During the traveling process, a flame is applied to the surface of the urethane sheet 1 to melt it, and a long covering material 3 wound in a roll shape is spread on the urethane sheet 1 to be laminated, and the laminated product is pressed. It was manufactured through a process in which the covering material 3 was adhered onto the urethane sheet 1 by passing it between 4 and pressing, and then the adhesive was cut into a partial shape of the sheet by the cutting die 6.

However, in this method of manufacturing a seat material for a seat, since a flame is applied to the surface of the urethane sheet to melt it, a harmful gas is generated at the time of melting, which adversely affects the human body and the environment. Further, the urethane sheet used in this manufacturing method is more expensive than the standard product, and this has been reflected in the price increase of the seat material for seats and the price of the seat itself.

Under these circumstances, a method of manufacturing a seat sheet material using an adhesive has been adopted. For example, as one method thereof, as shown in FIG. 8, a long pad material 11 wound in a roll shape is extended and traveled, and an adhesive 12 is sprinkled on the entire surface of the pad material 11 in the travel process, and then, Putting material 1 so that this adhesive 12 is sandwiched
The long covering material 13 wound in a roll shape on 1 is extended and laminated, the laminated material is passed between the heat rolls 14 to be hot-pressed, and cooled by the cooling rolls 15 to form the pad material 11. The seat material for a seat is manufactured through a process of adhering the covering material 13 on the upper part and then cutting the adhered material into a partial shape of the seat by the cutting die 16.

However, in this method of manufacturing a seat material for a seat, a long pad material wound in a roll shape and a covering material are adhered to each other and then cut into a partial shape of the seat. For this reason, the pad material and the covering material are also bonded to each other with an adhesive in the surplus portion other than the portion used as the cut seat sheet material. For this reason, when trying to reuse this surplus portion, it is necessary to separate each pad material and each covering material, but since the pad material and the covering material are strongly adhered by the adhesive, The work of separating the material was extremely complicated, and it was not possible to reuse this surplus portion in practice. Further, in this method, the adhesive is also sprayed on the surplus portion, and the adhesive is wasted accordingly.

On the other hand, when natural leather is used as the covering material, the natural leather cannot be wound into a roll like the above-mentioned method, and therefore, it is cut beforehand according to the shape of the seat, while FIG. Further, as shown in FIG. 10, the long pad material 11 wound in a roll shape is extended and run, and the adhesive 12 is sprinkled over the entire pad material 11 in the running process, and after heating and cooling the same. Cutting type 16 according to the shape of the seat
A method was adopted in which the leather was laminated on the pad material via an adhesive and then the laminate was thermocompression bonded.

However, in this manufacturing method, the adhesive is applied to the long pad material wound in a roll shape, and then the adhesive is cut according to the shape of the seat. The adhesive was wasted because the agent was sprayed.

The present invention has been made in view of the above circumstances, and in the manufacturing process, an unreusable excess portion does not occur, and the amount of adhesive used can be minimized.
Moreover, it is an object of the present invention to provide an inexpensive method for manufacturing a seat material for a seat, which does not generate harmful gas.

[0009]

In order to achieve the above object, the present invention is a method of manufacturing a seat sheet material to be attached to a seat body of furniture, an automobile or the like, which is cut beforehand according to the shape of the seat. Characteristic is that an adhesive is sprayed on a specific portion of the pad material, and thereafter, a cutting material corresponding to the shape of the seat is laminated on the pad material through the adhesive, and the laminate is hot pressed. The manufacturing method of the seat material for a seat is defined as the gist.

[0010]

In the method of manufacturing a seat sheet material according to the present invention, the pad material and the covering material, which are cut beforehand according to the shape of the seat, are adhered to each other. The pad material or the covering material before adhesion, which is generated when the cutting is performed, becomes an excessive portion, and each pad material and the covering material can be easily reused. Further, the adhesive is sprinkled only on a specific portion of the pad material, so that the amount of the adhesive used per seat sheet material can be minimized.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for manufacturing a seat material for a seat according to the present invention will be described below in detail with reference to the drawings. First, as shown in FIG. 1, the adhesive 22 is sprayed on the surface of the pad material 21 that has been cut in advance according to the shape of the seat. The pad material 21 may be a conventionally used urethane sheet, non-woven fabric, knitted fabric, felt, or the like. The pad material 21 is cut according to the shape of the seat such as a seat portion, a backrest portion, or an armrest portion. Of. The surplus portion of the cut pad material 21 that is not used in the production of the seat material is a non-woven fabric,
It is composed only of knitted fabrics and pad materials such as felt.

Next, the adhesive 22 is sprayed on a specific portion of the pad material 21. The adhesive 22 is preferably a hot-melt adhesive such as an ethylene-vinyl acetate copolymer system, a synthetic rubber system, a polyamide system, or a polyester system. As shown in FIG. 21 It is sprayed from above, or sprayed in the form of emulsion to be sprayed on the pad material. At this time, a covering material (not shown) such as paper, cloth, or plastic sheet is placed or temporarily adhered to a specific portion of the pad material 21, for example, a portion excluding a portion used for adhesion. As shown in FIG. 2, the adhesive 22 is applied only to a specific portion of the pad material 21 by spraying 22.
2 is sprinkled. After application, the adhesive on the dressing is ready for reuse.

As a method of spraying the adhesive on a specific portion of the pad material, there is a method of using a spraying device capable of adjusting the spraying direction and range of the adhesive in addition to the method of using the covering material. . In the case of using a non-woven fabric as a pad material and spreading the adhesive over the entire pad material, by dipping the pad material in the form of a web in a tank containing an adhesive in an emulsion state and drying it, This is useful in that the production of the nonwoven fabric and the spraying of the adhesive can be performed in one step. The amount of adhesive applied onto the pad material is not particularly limited, but the required adhesive strength,
It may be appropriately determined in consideration of the kind of the pad material, the kind of the covering material adhered to the pad material, the texture of the seat material for the seat, and the like.
It should be noted that, as shown in FIG. 1, the adhesive 22 may be heated by a heater 24 so that the adhesive 22 does not fall off from the pad material 21, and the adhesive 22 is partially melted and fixed to the pad material 21.

Next, as shown in FIG. 2, a cover material 23, which is also cut in advance in accordance with the shape of the seat, is laminated on the pad material 21 via an adhesive 22. The cover material 23 is a conventionally used natural leather, synthetic leather, knitted fabric, or the like, and the cover material 23 is cut in accordance with the shape of the seat such as a seat portion, a backrest portion, or an armrest portion. The surplus portion of the cut cover material 23 that is not used for manufacturing the seat material for seats is made only of a material that constitutes the cover material such as natural leather, synthetic leather, and knitted fabric.

Next, as shown in FIG. 3, the laminate in which the covering material 23 is laminated on the pad material 21 via the adhesive 22 is hot pressed. The hot pressing is performed by passing the laminated pad material 21 and the covering material 23 between the heat rolls 25 as shown in FIG. 3, or by sandwiching the pad material and the covering material between the upper iron and the lower iron. can do. By this hot pressing, the adhesive 22 sandwiched between the pad material 21 and the covering material 23 is melted and enters the pad material 21 and the covering material 23. After hot pressing in this way, the pad material 21 is obtained by forced cooling or natural cooling of the laminate.
Also, the adhesive 22 that has entered the inside of the cover material 23 is solidified and the pad material 21 and the cover material 23 are adhered to each other, whereby the seat sheet material 20 shown in FIG. 4 can be obtained.

At this time, it is necessary to note that the seat material for the seat may be made of a cover material such as natural leather or synthetic leather which is easily affected by heat when hot pressing. When such a material is used, the pad material and the facing material may be heated so that the average temperature of the facing material and the putting material is the melting temperature of the adhesive. That is, when heating the pad material and the facing material so that the average temperature of the same facing material and the putting material becomes the melting temperature of the adhesive, the adhesive melts and melts out, and the pad material side and the facing material side This means that the minimum necessary thermal energy for permeation is applied to the pad material and the facing material. For this reason, according to this heating method, for example, the heating temperature on the surface material side or the pad material side is increased, and conversely, the heating temperature on the pad material side or the surface material side is lowered, and the temperature of the surface material side or the pad material side is reduced. The heating temperature can be appropriately changed according to the type of pad material and the type of facing material.

Incidentally, in the range of the pad material in the present invention,
In addition to those made of urethane sheet, non-woven fabric, knitted fabric, felt, etc., for example, those shown in FIG. 6 in which a urethane sheet is adhered on felt are also included. When such a pad material is used, as shown in FIG. 5, the felt 27 and the urethane sheet 26, which form the pad material 21, are cut in advance according to the shape of the seat, and the respective materials 26, 27 are cut.
The adhesive 22 is sprinkled on a specific portion of the sheet, and then the covering material 23 cut corresponding to the shape of the seat is laminated on the pad material 21 through the adhesive 22 of the urethane sheet 26,
These surface material 23, urethane sheet 26, felt 27
It is possible to bond them to each other by hot pressing a laminate made of.

[0018]

With the above structure, in the method for manufacturing a seat sheet material of the present invention, the pad material and the covering material cut beforehand according to the shape of the seat are bonded. In the manufacturing process, the pad material or the facing material before bonding, which occurs when cut according to the shape of the seat, becomes an excess part, and it is possible to easily reuse each pad material and the facing material. There is. Therefore, according to this method, an unreusable excess portion is not generated in the process of manufacturing the seat material for a seat, the adhesive used can be suppressed to a necessary minimum, and harmful gas may be generated. It is possible to provide an inexpensive seat material for a seat.

[Brief description of drawings]

FIG. 1 is a schematic view showing a step of spraying an adhesive on a pad material.

FIG. 2 is an enlarged plan view showing a state in which a facing material is laminated on a pad material via an adhesive.

FIG. 3 is an enlarged schematic view showing a state in which a pad material and a facing material that are stacked one above the other are hot pressed.

FIG. 4 is an enlarged perspective view showing a seat material for a seat manufactured by the method of the present invention.

FIG. 5 is an enlarged cross-sectional view showing a cushioning material and a felt in which an adhesive is sprinkled on a specific portion, and a covering material.

FIG. 6 is an enlarged cross-sectional view showing a state in which a facing material, a cushion material, and a felt are bonded to each other.

FIG. 7 is a schematic view showing a manufacturing process of a conventional seat material for a seat.

FIG. 8 is a schematic view showing a manufacturing process of another conventional seat material for a seat.

FIG. 9 is a schematic view showing a manufacturing process of still another conventional seat material for a seat.

FIG. 10 is a schematic view showing a manufacturing process of still another conventional seat material for a seat.

[Explanation of symbols]

 21 ... Pad material 22 ... Adhesive 23 ... Surface material 25 ... Heat roll

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Internal reference number FI Technical display location B29L 31:58 4F (72) Inventor Shunpei 520 Nishiwazuzu, Itami City, Hyogo Prefecture Nitto Boseki Co., Ltd. Itami Inside the factory (72) Inventor Katsumi Shigeta 3-18 Higashikinpakucho, Gifu City, Gifu Prefecture Hashimauchi Co., Ltd.

Claims (1)

[Claims] 1. A method for manufacturing a seat sheet material to be attached to a seat body of furniture, an automobile, etc., which comprises applying an adhesive to a specific portion of a pad material cut in advance according to the shape of the seat, and then adhering the same. A method for producing a seat sheet material, comprising: laminating a covering material, which is also cut corresponding to the shape of a seat, on the pad material via an agent, and hot pressing the laminated material.