JP2000117869A - Laminated cloth, production thereof and cloth sewing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a laminated cloth using no adhesive not advancing a crack even if fibers of a front cloth are cut by a thick sewing machine needle, capable of preventing the generation of cloth pieces and enabling high speed sewing of cloths comprising a fabric or a knitted fabric by using a thick sewing machine needle. SOLUTION: A front cloth 2 and a rear cloth 3 comprising a fabric or a knitted fabric are bonded and the fibers 2b of the front cloth 2 and the fibers 3b of the rear cloth 3 are spot-bonded at the boundary part of both front and rear cloths 2, 3 by fusion particles 4 and a large number of spot-bonded places are dispersed to the whole of the boundary part. By this constitution, since the fibers of both front and rear cloths are spot-bonded by fusion particles 4 to be integrated, it is unnecessary to use an adhesive and a laminated cloth having the feel near to that of the surface cloth is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated fabric in which a front fabric made of a woven or knitted fabric and a back fabric made of a nonwoven fabric and the like, a method of manufacturing the same, and a method of sewing the fabric.

[0002]

2. Description of the Related Art Conventionally, as a method of manufacturing a laminated cloth in which a front cloth made of a woven or knitted fabric and a back cloth made of a nonwoven fabric or the like are bonded, a green fabric to be a front cloth is preset and an adhesive is applied to the back surface of the green fabric. In some cases, a back cloth is attached to the back of the greige via the adhesive, and the adhesive is dried to obtain a laminated cloth. Specifically, the presetting, coating, laminating, and drying are continuously performed while transporting the greige machine, which is the outer cloth, with both ears held by a pin tenter. The presetting step and the steps from coating to drying may be performed in different steps. Another method of manufacturing a laminate cloth is to perform needle punching from the front cloth side in a state where the front cloth and the back cloth are overlapped, so that the fibers of both cloths are entangled to join the two cloths. is there.

[0003]

However, the former manufacturing method using an adhesive and the obtained laminated fabric have the following problems. (1) Since the applied adhesive penetrates into the greige and is dried and hardened, the texture of the laminated cloth becomes hard. (2) A large amount of heat is required to dry the moisture and the solvent of the adhesive, which increases the manufacturing cost. (3) The size of the equipment that performs the process from coating to drying becomes longer, and it takes a long time to start up from coating to drying smoothly. Therefore, in the production of small lots, the yield is reduced and the production cost is increased. Further, in the latter manufacturing method in which the two fabrics are joined only by the needle punch, the joining strength of the two fabrics is weak, and therefore, a fabric that can be selected, such as a combination of a bore-shaped front fabric and a coarse mesh-shaped back fabric that are easily entangled. There were restrictions on the combinations.

[0004] Further, in the industry of sewing a cloth made of a woven or knitted fabric with a sewing machine, there is a demand to sew the cloth using a thick sewing needle at a high speed in order to improve the sewing ability. In order to respond to this request, it is conceivable to sew in a state of a laminated cloth having a back cloth applied to a front cloth so that a crack does not progress from a place where the thread is cut with a thick sewing needle. However, the laminate cloth obtained by the above-described manufacturing method has a problem that the texture is hard and the original texture of the cloth cannot be obtained.

Accordingly, an object of the present invention is to provide a laminated fabric in which both fabrics are firmly joined without using an adhesive, a method of manufacturing the same, and a method of suturing the fabric in order to solve the above problems.

[0006]

According to the first aspect of the present invention, there is provided a laminated cloth in which a front cloth and a back cloth made of a woven or knitted fabric are joined together to obtain a laminated cloth without using an adhesive. The fibers of the front cloth and the fibers of the back cloth are partially entangled in the layer of the back cloth, and the fibers of the front cloth and the fibers of the back cloth are point-bonded at the boundary between the front and back cloths by fusion bonding, A laminating cloth characterized in that a number of spot-adhered portions are dispersed throughout the boundary. In order to further reduce the influence of the back cloth on the texture of the laminate cloth, the weight of the back cloth may be lighter than that of the front cloth. Non-woven fabric such as spun bond may be used. Further, the laminated cloth according to claim 1 may use a bulky nonwoven fabric with good cushioning property in which a entangled portion of fibers is bonded as the backing cloth in order to obtain a laminated cloth having good cushioning property. . Furthermore, in order to enable high-speed sewing with a thick sewing needle, the laminated cloth according to claim 1 abuts a backing cloth on the back side of the backing cloth, and the top cloth penetrates the backing cloth. The fibers may be entangled with the fibers of the backing fabric.

According to the first aspect of the present invention, the fibers of the front cloth and the fibers of the back cloth are partially entangled, and a large number of small fused particles are dispersed throughout the boundary between the front and back cloths. By bonding the fibers of the front and back fabrics to each other, the texture of the laminated fabric can be made closer to the texture originally possessed by the front fabric, and the bonding strength of the front and back fabrics can be increased.

[0008] The means adopted by the present invention according to the second aspect of the present invention for producing a laminated cloth without using an adhesive is a laminate cloth in which a front cloth and a back cloth made of a woven or knitted fabric are joined together. A laminated cloth characterized in that fibers of a backing cloth are partially entangled in a layer of the backing cloth, and the entangled fibers are adhered to each other. In addition, in order to further reduce the influence of the back cloth on the feel of the laminate cloth, the weight of the back cloth may be lighter than that of the front cloth. Also,
In order to obtain a laminated cloth having good cushioning properties, the backing cloth may be made of a bulky nonwoven fabric having good cushioning properties in which entangled portions of fibers are fused. Furthermore, in order to enable high-speed sewing using a thick sewing needle, the laminated cloth according to claim 2 abuts a backing cloth on the back side of the backing cloth, and the backing cloth penetrates the backing cloth. The fibers may be entangled with the fibers of the backing fabric. In the laminate cloth according to the second aspect, the entangled portions are formed in a large number and the entangled portions may be dispersed throughout the backing cloth.

According to the second aspect of the present invention, since the partially entangled fibers of the front and back fabrics are bonded, the texture of the laminated fabric can be made closer to the texture originally possessed by the front fabric, The adhesive strength between the front and back fabrics can be increased.

In order to obtain a laminated cloth without using an adhesive, a means adopted by the present invention according to claim 3 is a method for producing a laminated cloth by joining a front cloth and a back cloth made of a woven or knitted fabric. By performing needle punching with a fusing sheet made of a fibrous heat-sealing material interposed between the front and back fabrics, the fibers of the front and back fabrics are entangled, and the fusing sheet is heated and melted in this state. Thus, a method for producing a laminated cloth is characterized in that the fibers of the front cloth and the fibers of the back cloth are bonded to each other. In order to prevent the fibers of the back cloth from being exposed on the front side of the front cloth, the fibers of the front cloth protrude toward the back side (joining surface side facing the back cloth) and penetrate into the layer of the back cloth. Needle punching is performed as described above, and fibers may be entangled in the layer of the backing cloth. As the backing cloth, a nonwoven fabric in which fibers are exposed on the side facing the front cloth (joining surface side) is used, or a woven or knitted fabric whose side facing the front cloth is brushed is used.

According to the third aspect of the present invention, the fibers of the front and back fabrics are adhered to each other with a heat-sealing material obtained by heating and melting a heat-sealing sheet without applying an adhesive. The texture of the obtained laminated cloth can be made close to the texture originally possessed by the front and rear cloths, and the entanglement of the fibers of the front and rear cloths and the adhesion by the heat-sealing material provide a laminated cloth having a strong adhesive strength between the front and rear cloths. be able to.

[0012] In order to obtain a laminated cloth without using an adhesive, the means adopted by the present invention according to claim 4 is a method of manufacturing a laminated cloth by joining a front cloth and a back cloth made of a woven or knitted fabric. By performing needle punching with a fusion sheet made of a heat-sealing material interposed between the front and back fabrics, the fibers of the front and back fabrics are entangled and heated in this state to form a large number of fusion sheets. This is a method for producing a laminated cloth, wherein the fibers of the front cloth and the fibers of the back cloth are point-bonded with the fused particles at the boundary between the two cloths by granulation. As the fusion bonding sheet, there is a sheet formed from a fibrous heat-sealing material into a nonwoven fabric, or a sheet formed from a heat-sealing material into a film shape. In order to prevent the fibers of the back cloth from being exposed on the front side of the front cloth, the fibers of the front cloth protrude toward the back side (joining surface side facing the back cloth) and penetrate into the layer of the back cloth. Like needle punching,
Fibers may be entangled within the backing layer. As the backing cloth, a nonwoven fabric in which fibers are exposed on the side facing the front cloth (joining surface side) is used, or a woven or knitted fabric whose side facing the front cloth is brushed is used.

[0013] According to the present invention, the texture of the laminated cloth obtained by bonding the fibers of both the front and back cloths by fusion bonding particles without applying an adhesive to the surface of the obtained cloth can be achieved. While being able to approach the texture to have, by the entanglement of the fiber of both front and back fabric and the point adhesion of the fused particles,
A laminate cloth having a strong adhesive strength between the front and back cloths can be obtained.

According to a fifth aspect of the present invention, there is provided a method of manufacturing a laminated cloth by bonding a front cloth and a back cloth made of a woven or knitted fabric to obtain a laminated cloth without using an adhesive. By performing needle punching with the fused particles attached to one or both of the mating surfaces of the front and back fabrics, the fibers of both the front and back fabrics are entangled and heated in this state to melt the fused particles. Thus, a method for producing a laminated cloth, wherein the fibers of the front cloth and the fibers of the back cloth are point-bonded at the boundary between the two cloths by fusion bonding. In addition,
In order to prevent the fibers of the back cloth from being exposed on the front side of the front cloth, the fibers of the front cloth must be on the back side (the joint side facing the back cloth).
Needle punching is performed so that the fibers protrude into the backing fabric layer and penetrate into the backing fabric layer, and the fibers may be entangled in the backing fabric layer. As the backing cloth, a nonwoven fabric in which fibers are exposed on the side facing the front cloth (joining surface side) is used, or a woven or knitted fabric whose side facing the front cloth is brushed is used.

According to the fifth aspect of the present invention, the texture of the laminated fabric obtained by applying the adhesive to the fibers of the front and back fabrics by means of fusion bonding particles without applying an adhesive, the surface texture of the obtained fabric is originally While being able to approach the texture to have, by the entanglement of the fiber of both front and back fabric and the point adhesion of the fused particles,
A laminate cloth having a strong adhesive strength between the front and back cloths can be obtained.

In order to obtain a laminated cloth without using an adhesive, the means adopted by the present invention according to claim 6 is a method for producing a laminated cloth by joining a front cloth and a back cloth made of a woven or knitted fabric. By performing needle punching in a state in which the front cloth and the back cloth containing the heat-fusible fiber are overlapped, the fibers of the front and back cloths are entangled, and the heat-fusible fibers are melted by heating in this state. And a method for producing a laminated fabric, characterized by bonding the entangled fibers. In order to prevent the fibers of the back cloth from being exposed on the front side of the front cloth, the fibers of the front cloth protrude toward the back side (joining surface side facing the back cloth) and penetrate into the layer of the back cloth. Needle punching is performed as described above, and fibers may be entangled in the layer of the backing cloth. As the backing cloth, a nonwoven fabric in which fibers are exposed on the side facing the front cloth (joining surface side) is used, or a woven or knitted fabric whose side facing the front cloth is brushed is used.

According to the sixth aspect of the present invention, the front fabric has the texture of the resulting laminated fabric by spot-bonding the entangled fibers of the front and back fabrics without applying an adhesive. It is possible to obtain a laminated cloth having a strong adhesive strength between the front and back fabrics by the entanglement of the fibers of the front and back fabrics and the point bonding, as well as the texture.

In order to enable high-speed suturing using a thick sewing needle without impairing the original feel of the cloth, the means adopted by the present invention according to the present invention is a method of fabricating a woven or knitted cloth. A method of sewing with a sewing machine, wherein the cloth is sewn in the state of the laminated cloth according to claim 1 or 2.

According to the present invention, the movement of the yarns constituting the fabric is facilitated by dispersing a large number of small adhesive portions where the fibers of the front and back fabrics are point-adhered to each other. Even when a thick sewing needle entering the sewing machine tries to stab the thread, the thread moves, and cutting of the thread with the thick sewing needle can be drastically reduced. Even if the yarn of the front fabric is cut with a thick sewing needle, even if the crack is about to propagate from the cut point, the crack may not be formed at the place where the fibers of the front and back fabrics are bonded or at the place where the fibers of the front and back fabrics are entangled. Since the propagation is interrupted, the occurrence of the breakage of the cloth can be prevented.

[0020]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a laminated fabric according to the present invention.

(First Embodiment) FIG. 1 is an enlarged sectional view showing a first embodiment of a laminated cloth according to the present invention, and FIG. 2 is an intermediate omission showing a manufacturing facility for carrying out the manufacturing method. FIG. 3 is an enlarged cross-sectional view showing a state in the process of manufacturing the laminated cloth. Laminated cloth 1 of the present embodiment
As shown in FIG. 1, a front fabric 2 and a back fabric 3 made of a woven or knitted fabric are joined together, and a fiber 2b of a yarn 2a constituting the front fabric 2 is formed at the boundary between the front and back fabrics 2, 3. And the fibers 3b of the back cloth 3 are bonded together by means of the fused particles 4, and a large number of these points are dispersed throughout the boundary, and the fibers 2b and 3b of the front and back cloths 2 and 3 are further bonded. This is a partially entangled 5 in the cloth layer of the back cloth 3.

The entanglement 5 of the laminate cloth 1 is performed by needle punching. The needle density (the number of acting needles per unit area of the laminate cloth 1) when performing needle punching is in a range that does not impair the feel of the outer cloth 2 (for example,
1 to 10 Pene / cm ² ), a number of bundles of fibers 2 b entangled 5 are formed by one needle, and the entangled fiber bundles are dispersed throughout the backing cloth 3.

The outer cloth 2 is selected from those having relatively coarse weaves or stitches with no noticeable needle marks and having a basis weight of 50 to 2000 g / m ² (preferably 100 to 1 g / m ² ).
000 g / m ² ) is selected. However, when the trace of the needle is not a problem, the weight is not limited to this. As the woven fabric, an arbitrary fabric such as a plain woven fabric or a pile woven fabric is used, and as the knitted fabric, an arbitrary fabric such as a jersey is used.

The nonwoven fabric of the backing cloth 3 is formed by mixing heat-fusible fibers which are synthetic fibers having a high melting point and synthetic fibers having a low melting point in order to obtain a laminated cloth 1 having good cushioning properties. Is heated at a temperature at which only the heat-fusible fibers are melted, and a good cushioning property in which the entangled fibers are fused with the molten fibers is used.
g / m ² (preferably, 50~200g / m ²⁾ of those are selected. In addition, the nonwoven fabric of the backing cloth 3 may be lighter and softer than the weight of the top cloth 2 in order to reduce the influence on the texture of the laminated cloth 1. For example, the basis weight is 10 to 100 g / m 2. ² (preferably 20-50 g / m ² ) of spun bond is used. Further, as the backing cloth 3, other than the non-woven fabric, an arbitrary one such as a woven fabric or a knitted fabric can be used. In this case, the back cloth 3 is brushed on the side facing the front cloth so that the fibers 2b and 3b of the two cloths 2 and 3 are easily brought into contact with each other at the boundary with the front cloth 2. The fibers 2b in the raised state of the outer cloth 2 are provided by performing the needle punching from the surface side of the outer cloth 2 or performing a raising treatment with a raising machine before joining the fibers to the back cloth 3.

The fused particles 4 are made of a heat-sealing material that melts at a temperature lower than the melting temperature of the fibers 2b of the front cloth 2 and the fibers 3b of the back cloth 3 in a process described below for manufacturing the laminated cloth 1. The basis weight is 8 to 200 g / m ² (preferably 1
0 to 70 g / m ² ), which is obtained by heating and melting a fusion bonding sheet, and having a particle outer diameter of about 0.2 to 1.5 mm (preferably 0.5 to 1.0 mm). By making the diameter smaller than the outer diameter of the yarn 2a constituting the front cloth 2, the yarn 2a of the front cloth 2 is not bonded to the back cloth 3, but the fibers 2b, 3b of the front and back cloths 2, 3 are bonded. I have to do it. Examples of the fusing sheet include a sheet formed from the fibrous heat-sealing material into a nonwoven fabric (for example, spunbond) or a sheet formed from the heat-sealing material.

The front cloth 2, back cloth 3 and fused particles 4 are made of the same material (for example, polyester, nylon, etc.).
It may be easier to recycle. Since the bonding of the laminated cloth 1 does not use a rubber-based adhesive or the like, it is possible to form the whole of the same material.

The laminated cloth 1 is made of the fibers 2b of the surface cloth 2.
And the fibers 3b of the back cloth 3 are partially entangled 5 and
By bonding the fibers 2b and 3b of the front and back fabrics 2 and 3 with each other with small fused particles 4 dispersed in large numbers throughout the boundary between the front and back fabrics 2 and 3, the texture of the laminate fabric 1 is changed. In addition to being able to approach the original texture, the adhesive strength between the front and back fabrics 2 and 3 can be increased. Although not shown, the laminated cloth 1 may bond the fibers 2b and 3b at the entangled portions 5 with the fused particles 4 generated by partially invading the entangled portions 5.

The production of the laminate cloth 1 is performed as follows using the production equipment shown in FIG. The manufacturing equipment includes a front cloth supply device 7 for supplying the front cloth 2, a back cloth supply device 8 for supplying the back cloth 3, an intermediate sheet supply device 9 for supplying the fusion sheet 6, and a fusion sheet 6. A polymerization apparatus 10 comprising a conveyor or the like on which the front and back cloths 2 and 3 are overlapped, a needle rocker 11 for performing needle punching, and a heating apparatus 13 for heating the intermediate body 12 which has been subjected to needle punching, are obtained. A cooling device 14 for cooling the laminated cloth 1 and a winding device 1 for winding the laminated cloth 1
5 is provided. The heating device 13 heats the intermediate body 12 to a temperature at which the heat-sealing material of the fusion bonding sheet 6 melts while passing through the heating furnace 17 while holding both ear ends of the intermediate body 12 with the pin tenter device 16. Thus, the heat setting can be performed together. Cooling device 14
Is applied to the heating path 17 by blowing cold air to the intermediate 12 or the like.
It is configured to cool and solidify the heat-sealing material of the fusing sheet 6 that has been melted.

The production of the laminated cloth 1 is performed by the outer cloth supply device 7.
The fusing sheet 6 supplied from the intermediate sheet supply device 9 is sandwiched between the front cloth 2 supplied from the back cloth 3 and the back cloth 3 supplied from the back cloth supply device 8, and is stacked by the polymerization device 10. And send it to the needle rocker 11
As shown in FIG. 3, the needles 18 of the needle rocker 11 are subjected to needle punching, and the fibers 2b, 3b
The intermediates 12 are temporarily entangled 5 with each other to temporarily join them. The fusing sheet 6 is formed from a fibrous heat-sealing material into a nonwoven fabric or from the above-mentioned heat-sealing material into a film. When performing the needle punching, the fibrous heat-sealing material forming the fusing sheet 6 enters the backing cloth 3 together with the fibers 2b of the front cloth 2 and is entangled 5 with the fibers of the backing cloth 3. There is also. In the case of the film-shaped fusing sheet 6, it becomes porous by needle punching, and the melt shrinkage described later is easily performed.

Subsequently, the intermediate 12 is heated by the heating device 13 and then cooled by the cooling device 14. The heat-sealing material of the fibrous or porous fusing sheet 6 is melted and shrunk by the heating of the heating device 13 to form a large number of fused grains 4, and as shown in FIG. The fibers 2b and 3b at the boundary are bonded together by a large number of fused particles 4 in a molten state. The fibrous heat-sealing material of the fusing sheet 6 maintains its fibrous state even when heated and melted due to its properties, and melts the fibers 2b, 3b at the boundary between the front and back fabrics 2, 3. It may be bonded with a large number of molten fibers in a state. The large number of fused particles 4 or molten fibers in the molten state are cooled by the cooling device 14 and solidified. When needle punching is performed from the outer cloth side,
Since the fibers 2b of the front cloth 2 project in the raised state on the back side of the front cloth 2, the fibers 2b in the raised state of the front cloth 2 and the fibers 3b of the back cloth 3 are formed.
b can be reliably thermally fused by the fusion particles 4.
When the fibrous heat-sealing material forming the fusion sheet 6 has penetrated into the entangled portion 5, the fibers 2 b, 3 b of the front and back fabrics 2, 3 at the entangled portion 5 are fused together. Adhere with 4.

In the present manufacturing method, since the intermediate 12 obtained by performing needle punching is integrated by the confounding 5, it is not necessary to pressurize when heating with the heating device 13, and the laminated cloth 1 having a good texture can be obtained. Obtainable.

(Second Embodiment) FIG. 4 is an enlarged sectional view showing a second embodiment of the laminated cloth according to the present invention. The difference between the laminated cloth 21 of the present embodiment and the laminated cloth 1 according to the first embodiment (see FIG. 1) is that the backing cloth 22 ( Spun-bonded nonwoven fabric, woven fabric, etc.), and the fibers 2b of the front cloth 2 penetrating the backing cloth 3 are entangled with the fibers 22b of the backing cloth 22. In addition to being able to sew, even if the yarn 2a of the outer cloth 2 is cut with a thick sewing needle and a crack is to be propagated, the crack 2 is entangled with the fiber 2b of the outer cloth 2 and the fiber 22b of the backing cloth 22. The point is that propagation can be blocked to prevent the occurrence of cloth breakage.

Although the illustration of the production of the laminated cloth 21 is omitted, the backing cloth 22 is supplied from the backing cloth supply apparatus arranged on the left side of the backing cloth supply apparatus 8 shown in FIG. Then, the backing cloth 22 is further superimposed on the back side of the backing cloth 3. After the overlapping, the manufacturing method is substantially the same as the manufacturing method in the first embodiment. When a backing cloth 22 with a backing cloth 22 bonded in advance is used, the backing cloth supply device is unnecessary, and the backing cloth can be manufactured in the same manner as the manufacturing method in the first embodiment.

(Third Embodiment) FIGS. 5 to 7 are side views of a manufacturing facility for carrying out a third embodiment of the method of manufacturing the laminated cloth 1 shown in FIG.
FIG. 4 is an enlarged cross-sectional view showing a state in the course of manufacturing a laminated cloth, and FIG. 7 is a side view of a manufacturing facility of another embodiment with a middle part omitted.

The production of the laminate cloth 1 is performed as follows using the production equipment shown in FIG. The manufacturing equipment includes a front cloth supply device 7 for supplying the front cloth 2, a back cloth supply device 8 for supplying the back cloth 3, a particle adhering device 24 for adhering the fused particles 4 to the front cloth 2, A polymerization apparatus 10 composed of a conveyor or the like on which the pieces 2 and 3 are superimposed, a cooling apparatus 25 for cooling and solidifying the fused particles 4, a needle rocker 11 for performing needle punching, and a heat treatment for the intermediate 23 subjected to needle punching Heating device 13 and the obtained laminate cloth 1
And a winding device 15 for winding the laminate cloth 1.

The grain adhering device 24 includes a gravure roll 24a having a large number of recesses formed in a cylindrical outer peripheral surface, a supply device 24b for injecting a resin in a heated and molten state into the recesses of the gravure roll 24a, and an outer periphery of the gravure roll 24a. Surface cloth 2
And a back-up roll 24c for transferring the molten resin in the concave portion to the surface cloth 2 by pressing the back-up roll. The molten resin in the concave portion of the gravure roll 24a is transferred to the surface cloth 2 and becomes fused particles 4. The heating device 13 includes an intermediate 23
While passing through the heating furnace 17, the intermediate body 23 is heated to a temperature at which the fused particles 4 are melted while holding the both ear ends with the pin tenter device 16 so that the heat set can be performed together. Have been. The cooling device 14 is configured so as to cool and solidify the fibrous heat-sealing material of the fusing sheet 6 melted in the heating path 17 by blowing cold air to the intermediate body 23 or the like.

The production of the laminating cloth 1 is performed by using
A large number of fused particles 4 are pre-adhered to the joining surface side of the front cloth 2 supplied from the surface cloth 2 by the particle adhering device 24, and the front cloth 2 and the back cloth 3 supplied from the back cloth supply device 8 are combined. Polymerization device 10
The fused particles 4 are cooled and solidified by the cooling device 25 while being overlapped with each other and sent to the needle rocker 11, and as shown in FIG.
Needle punching is performed with the needle 18 of the needle rocker 11 to partially entangle 5 the fibers 2b and 3b of the fabrics 2 and 3 to obtain an intermediate body 23 which is temporarily joined. The fused particles 4 attached to the bonding surface side of the surface cloth 2 have an outer particle diameter of 0.2 to 1.
5 mm (preferably, 0.5 to 1.0 mm), and the total weight per unit area of the surface cloth 2 is 8 to 200 g.
(Preferably, 20 to 100 g).

Subsequently, after the intermediate 23 is heated by the heating device 13, it is cooled by the cooling device 14. The intermediate body 23 heats and fuses a large number of fused particles 4 while passing through the heating device 13, and fuses the fibers 2 b, 3 b at the boundary between the front and back fabrics 2, 3 in a fused state. Adhere with. Many fused particles 4 in a molten state are cooled by the cooling device 14 and solidified.
When the needle punching is performed from the top cloth side, the fibers 2b of the top cloth 2 protrude in the raised state on the back side of the top cloth 2, so that the fibers 2b in the raised state of the top cloth 2 and the fibers 3b of the back cloth 3 are separated. In addition, it is possible to reliably perform heat fusion with the fusion particles 4.

In the present manufacturing method, since the intermediate body 23 obtained by performing the needle punching is integrated by the confounding 5, it is not necessary to pressurize when heating with the heating device 13, and the laminated cloth 1 having a good texture can be obtained. Obtainable.

Although not shown, by replacing the front cloth supply device 7 and the back cloth supply device 8 of the manufacturing equipment, a large number of fused particles 4 in a molten state are formed on the joint surface of the back cloth 3. The backing cloth 3 and the front cloth 2 supplied from the front cloth supplying apparatus 7 are superposed by the polymerization apparatus 10 while the fused cloth 4 is cooled and solidified by the cooling apparatus 25, and the needle cloth is attached thereto. It may be sent to the car 11.

Further, as the supplied front cloth 2 and back cloth 3, at least one of the front cloth 2 and the back cloth 3 to which the fused particles 4 are attached in advance is used, so that the production equipment can be used. It is also possible to omit the particle attaching device 24. Fused particles 4 to the bonding surface of front cloth 2 and / or back cloth 3
Is performed in another manufacturing facility (not shown).

Further, the particle adhering device 24 granulates the resin in a molten state and adheres it to the joint surface of the outer cloth 2, but is not limited to this. For example, it is also possible to construct a manufacturing facility for the laminated cloth 1 using the grain attaching device 26 shown in FIG. The particle adhering device 26 includes a rotary cylindrical member 26a formed of a wire mesh, and a particle supply device (not shown) for supplying solidified fused particles 4 to the inside of the rotary cylindrical member. The molten particles 4 sieved from the rotary cylinder 26a are sprayed on the joining surface side. Molten particles 4
The backing cloth 3 on which is sprayed is superimposed on the top cloth 2 by the polymerization apparatus 10 and sent out to the needle rocker 11. In addition, the spraying of the molten particles 4 can also be performed on the joining surface of the outer cloth 2 being transported. In this case, the top cloth 2 on which the molten particles 4 are sprayed is overlapped with the back cloth 3 by the polymerization apparatus 10,
It is sent to the needle rocker 11.

(Fourth Embodiment) FIG. 8 is an enlarged sectional view showing a fourth embodiment of the laminated cloth according to the present invention. The laminated cloth 31 of the present embodiment is configured such that the fibers 2b of the front cloth 2 made of a woven or knitted fabric are penetrated into the layer of the back cloth 33 made of a nonwoven fabric, and are entangled with the fibers 33b of the back cloth 33.
Then, the entangled fibers 2b and 33b are bonded to each other 3
It is four. The bonding 34 is performed by fusing the heat-fusible fibers mixed in the backing cloth 33. Similarly,
In the back cloth 33, fibers 33b constituting the nonwoven fabric are bonded 36 by fusion of heat-fusible fibers mixed in advance at the time of forming the nonwoven fabric.

The confounding 35 is performed by needle punching. The needle density (the number of acting needles per unit area of the laminated cloth 1) when performing needle punching is
A range that does not impair the texture of the outer cloth 2 (for example, 1 to 10 Pe
ne / cm ² ) is selected, a large number of fiber bundles entangled 35 are formed by one needle, and the entangled fiber bundles are dispersed throughout the backing cloth 33.

The laminating cloth 31 is a laminating cloth 3
In order to reduce the influence of the back cloth 33 on the texture of the first cloth, the weight of the back cloth 33 may be lighter than that of the front cloth 2 in some cases. The laminated cloth 31 is used as the backing cloth 33 so that the entangled portion of the fiber 33b is bonded by fusion of the heat-fusible fiber in order to obtain a laminated cloth having a good cushioning property.
6. A non-woven fabric having bulkiness and good cushioning property (50-500 g / m ² (preferably 50-200 g
/ M ² )). Laminated cloth 31
In order to enable high-speed suturing using a thick sewing needle, although not shown, the backing cloth 22 is brought into contact with the back side of the backing cloth 33 (see FIG. The fibers 2b of the cloth 2 may be entangled with the fibers 22b of the backing cloth 22.

The laminated cloth 31 has the fibers 2b, 33b interlaced 35 of the front and back cloths 2, 33 bonded to each other, so that the texture of the laminated cloth can be made close to the original texture of the front cloth 2, and the front and back cloths can be made close to each other. The adhesive strength between the two cloths 2 and 33 can be increased.

Although not shown in the drawings, the production of the laminated fabric 31 is performed by forming a web in a state where the front fabric 2 is mixed with a high melting point synthetic fiber and a low melting point synthetic fiber which is a heat fusible fiber. The fibers 2b, 3 of the front and back fabrics 2, 33 are formed by overlapping the fabric 33 and performing needle punching in this state.
3b is entangled 35 and heated in this state to heat and melt the heat-fusible fiber, thereby forming the entangled fiber 2
b and 33b and the fibers 33b constituting the back cloth 33 are fused together to obtain a laminated cloth 31 in which the front and back cloths 2 and 33 are integrated.

According to this manufacturing method, the entangled fiber 2b of the front and back fabrics 2, 33 is applied without applying an adhesive.
By bonding points 33b to each other, the texture of the obtained laminated cloth 31 can be made close to the texture originally possessed by the front cloth 2, and the laminated cloth 31 having a strong bonding strength between the front and back cloths 2, 33 can be obtained. .

(Fifth Embodiment) In the fifth embodiment, though not shown, a thick sewing needle (for example, a JIS No. 19 to No. 23 needle) is used without impairing the original texture of the cloth. Suture at high speed (for example, when the sewing machine rotation speed is 1
2,000 to 1,500 strokes / min), when sewn a woven or knitted fabric with a sewing machine,
The stitching is performed in the state of 21, 31.

When the thread of the outer cloth 2 is cut with a thick sewing needle when the fibers of the outer cloth 2 are sewn at a high speed, even if a crack is going to propagate from the cut section of the thread, the cloth 2 or 3 (or 33) is bonded at the point where the two cloths 2 and 3 (or 33) adhere. Since the propagation of the cracks is blocked, a suture state that can prevent the occurrence of the breakage of the cloth is obtained. When the backing cloth 22 is backed, the contact between the backing cloth 22 and the sewing machine is made smoothly, and the sewing can be performed at a high speed. As a case where sewing is performed at high speed using a thick sewing needle, sewing of a seat used for an automobile seat is exemplified.

[0051]

According to the first aspect of the present invention, since the fibers of the front and back fabrics are point-bonded by fusion bonding and entangled to integrate the fabrics, there is no need to use an adhesive. A laminated cloth can be provided in which the front and back cloths are firmly joined without impairing the texture of the cloth. The present invention according to claim 2 provides a laminated cloth in which the front and back cloths are firmly joined without damaging the texture of the front cloth because the entangled fibers of the front and back cloths are bonded to each other, thereby eliminating the need to use an adhesive. it can.

According to the present invention, the fibers of the front and back fabrics can be adhered to each other and the fibers of the front and back fabrics can be entangled to integrate the front and back fabrics. It is no longer necessary to use a laminate cloth, and a laminated cloth in which the front and back cloths are firmly joined without damaging the texture of the front cloth can be provided. Since the present invention according to claim 6 can bond the entangled fibers of the front and back fabrics together to integrate the front and back fabrics, there is no need to use an adhesive, and the texture of the front fabric is not impaired. A laminated cloth in which the front and back cloths are firmly joined can be provided.

According to the present invention, even if the fibers of the surface cloth are cut with a thick sewing needle, the crack does not progress and the occurrence of the breakage of the cloth can be prevented. A suturing method capable of suturing at a high speed using a needle can be provided.

[Brief description of the drawings]

FIG. 1 is an enlarged cross-sectional view showing a first embodiment of a laminate cloth according to the present invention.

FIG. 2 is a side view in which a manufacturing facility for carrying out the first embodiment of the method for manufacturing a laminated fabric according to the present invention is omitted in the middle.

FIG. 3 is an enlarged cross-sectional view showing a state during the manufacturing in the manufacturing method.

FIG. 4 is an enlarged cross-sectional view showing a second embodiment of the laminated cloth according to the present invention.

FIG. 5 is a side view of a manufacturing facility for carrying out a third embodiment of a method for manufacturing a laminated cloth according to the present invention, with a middle part omitted.

FIG. 6 is an enlarged sectional view showing a state in the course of manufacturing in the manufacturing method.

FIG. 7 is a side view of a manufacturing facility of another mode according to the third embodiment, which is intermediately omitted.

FIG. 8 is an enlarged cross-sectional view showing a fourth embodiment of the laminate cloth according to the present invention.

[Explanation of symbols]

2 ... front cloth, 2b ... fiber, 3 (33) ... back cloth, 3b (33)
b): Fiber, 4: fused particles, 5: confounding, 6: fusion sheet, 34: adhesion

Claims (7)

[Claims] 1. A laminated cloth in which a front cloth and a back cloth made of a woven or knitted fabric are joined to each other, wherein the fibers of the front cloth and the fibers of the back cloth are partially entangled in the layer of the back cloth. A laminated cloth, wherein the fibers of the front cloth and the fibers of the back cloth are point-adhered at the boundary portion by fusion bonding, and a large number of spot-adhered portions are dispersed throughout the boundary portion. 2. A laminated fabric in which a front fabric and a back fabric made of a woven or knitted fabric are joined together, wherein fibers of the front fabric and fibers of the back fabric are partially entangled in a layer of the back fabric, and the entangled fibers are formed. Laminate cloth characterized by bonding together. 3. A method for manufacturing a laminated cloth by joining a front cloth and a back cloth made of a woven or knitted fabric, wherein a fusion sheet made of a fibrous heat-sealing material is interposed between the front and back cloths. By performing needle punching in this state, the fibers of both the front and back fabrics are entangled, and the fusion sheet is heated and melted in this state, whereby the fibers of the front fabric and the fibers of the back fabric are bonded to each other. Fabric manufacturing method. 4. A method of manufacturing a laminated cloth by joining a front cloth and a back cloth made of a woven or knitted fabric, wherein a needle made of a heat-sealing material is interposed between the front and back cloths. By performing punching, the fibers of both the front and back fabrics are entangled, and heated in this state to form the fused sheet into a large number of fused grains, so that the fibers of the front fabric and the fibers of the back fabric are formed at the boundary between the two fabrics. And a point bonding process using the fused particles. 5. A method for manufacturing a laminated cloth by joining a front cloth and a back cloth made of a woven or knitted fabric, wherein the fused particles are adhered to one or both of the mating surfaces of the front cloth and the back cloth. By performing needle punching, the fibers of the front and back fabrics are entangled and heated in this state to melt the fused particles, so that the fibers of the front fabric and the fibers of the back fabric are fused at the boundary between the two fabrics. A method for producing a laminated cloth, wherein the adhesive is point-bonded with grains. 6. A method for manufacturing a laminated fabric by joining a front cloth and a back cloth made of a woven or knitted fabric, wherein needle punching is performed in a state where the front cloth and the back cloth containing heat-fusible fibers are overlapped. A method for producing a laminated fabric, wherein the fibers of the front and back fabrics are entangled, and the entangled fibers are bonded by heating in this state to melt the heat-fusible fibers. 7. A method of sewing a cloth made of a woven or knitted fabric with a sewing machine, wherein the cloth is sewn in the state of the laminated cloth according to claim 1 or 2.