JP2736017B2 - Method of manufacturing wide-width laminated fabric body with yarn as weft - Google Patents

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 wide-weft laminated fabric body in which the wefts are composed of parallel yarns. Where "
The term “component” refers to a component in the lateral direction or the width direction of the weft laminated fabric.

[0002]

2. Description of the Related Art A wide weft laminated fabric obtained by continuously laminating a wide weft web cut to the width on a wide warp web and continuously bonding the weft is used as a reinforcing material for various industries. . Such wide-width laminated fabric is disclosed in
JP-A-3-38783 discloses a basic manufacturing method thereof.

[0003] That is, the outline is that the adhesion liquid is applied to the surface of a circulating belt that travels horizontally at a width corresponding to the width of the weft lamination cloth, and is intersected at a height different from this, and is passed on a conveyor that horizontally circulates in the weft direction. The wide weft web cut for each length corresponding to the width of the web is placed and moved at regular intervals, and each time the cut weft web comes to a position that completely overlaps the warp material, the circulating belt is instantaneously turned on. It is moved vertically to make contact with the cut weft web on the conveyor, adhered and transferred to it, and then separated from the conveyor, repeating the process of forming a warp web continuum on the circulating belt. This is a method in which a web is laminated and the process is bonded to form a process laminated fabric.

[0004] As the web, in addition to a uniaxially stretched membrane, a split web thereof, a reticulated web obtained by widening the split web, or a nonwoven fabric, a spun yarn filament, a flat yarn, a split yarn, a glass fiber yarn, a roving, or a carbon fiber. A large number of juxtaposed bodies are used as warp and weft webs.

[0005] A lattice conveyor is usually used for the circulating conveyor in the weft direction, and the section for carrying the weft web keeps a horizontal plane and advances at a speed slightly higher than the feeding speed of the weft web.
The supplied weft web is pulled by a slight tension due to the frictional resistance of the lattice bar, cut by a cutter on the conveyor, and moves at a constant speed with the conveyor. At that time, the width of the cut weft web is always constant, and it is essential that the web is placed on the conveyor in a substantially perfect planar shape without wrinkles and irregularities, in order to adhere and transfer the warp material in an orderly shape and transfer. It is an indispensable condition.

However, when yarns are used as the weft web, each yarn is generally wound on a bobbin one by one, and the yarn drawn out from the bobbin is straight under tension, but is cut. When it is in a free state, the yarn is bent or twisted due to winding distortion or twisting stress remaining on the yarn. For this reason, when such a yarn is supplied as a weft web onto a conveyor, its shape and arrangement are disturbed, and the above conditions cannot be satisfied at all.

Japanese Patent Publication No. 51-9067 discloses a method which solves the above problems and makes it possible to manufacture a wide-width laminated fabric using yarn as a weft material. This method
This is a method of separately manufacturing a so-called "glue cloth" in which the weft directions of a number of parallel yarns are connected by a thin thread of hot melt glue, and supplying this as a weft web.

However, this method has a large occupied space volume, the interval between adjacent yarns is limited to 10 mm or less, and a separate adhesive cloth must be manufactured, resulting in a large production loss and an expensive manufacturing apparatus. This is disadvantageous in terms of production cost.

As another method for solving the above problem, there is known a method for fixing the arrangement of yarn groups described in JP-A-1-239150. In this method, a polymer liquid having an adhesive property and spinnability is scattered by air to a large number of parallel running yarn groups, arrives at the yarn group in a filament form, solidifies and adheres, The arrangement of the yarn group is fixed by the filament.

However, this method requires a device for scattering the polymer liquid by air, and the space occupied by the polymer liquid is large, which is expensive as a manufacturing device. Further, there is a disadvantage that switching and cleaning are complicated, and when the interval between the yarns is large, the loss of the polymer liquid is large.

[0011] As still another method, Japanese Patent Publication No. 3-5722.
A method disclosed in Japanese Patent Publication No. 2 (JP-A) No. 2 is known. This method involves heating or gluing a large number of independent yarns under tension in the process of feeding them as wide weft webs, imparting straightness in a free state, and connecting them to each other in the weft direction. It is a method to make them parallel in parallel.

However, in this method, when the yarn is supplied to the conveyor, when the yarns are supplied to the conveyor, a difference in tension occurs when the thicknesses of the individual yarns vary, and when the yarns are cut, the difference in tension is generated. The resulting yarn is bent or twisted, resulting in incomplete transfer. A similar phenomenon occurs when the yarn is fibrillated.

On the other hand, in the case of the gluing process, if the application of the sizing agent to the yarn is uneven, when the portion is flooded, the flatness is partially lost, and the yarn is transferred to the circulating belt running in the warp direction. The area is reduced, the adhesive force is weakened, and inconveniences such as curving, falling, and turbulence occur.

[0014]

SUMMARY OF THE INVENTION The present inventors have made intensive studies in view of the above-mentioned circumstances, and as a result, by connecting mutually parallel running weft yarns using heat-fusible fibers, weft yarns have been developed. It has been found that straightness in a free state can be imparted to the present invention, and the present invention has been completed. The purpose of the invention is to run a wide weft material cut to a length corresponding to the width of a wide warp material. When manufacturing a wide weft laminated fabric body that seamlessly overlaps the warp material and adhesively fixes the warp material and the weft material, using yarn as the wide weft material, fixing the yarn arrangement of the wide weft material in the cut state, It is an object of the present invention to provide a method for producing a wide weft laminated fabric using threads that are laminated and fixed in a regular shape on a warp material without disturbance such as wrinkles and bends.

[0015]

The first method of the present invention is as follows.
A large number of wefts running in parallel as a wide weft are laminated by heating the heat-sealing yarns orthogonally to the wefts in the supply process, and then heated, so that the space between the wefts is bonded and fixed before the supply. Then, the obtained laminate is supplied on a conveyor circulating in the weft direction, and after cutting at predetermined lengths,
By transcribing on a circulating belt that crosses at a different height from the conveyor and travels in the warp direction, a continuum consisting of the weft yarns is formed on the circulating belt,
After laminating the warp-direction continuum and the traveling warp material, the process is bonded and fixed.

In a second method of the present invention, a plurality of heat-fused yarns are obliquely crossed with two or more weft yarns during a supply process to a plurality of weft yarns running in parallel as a wide weft material. By laminating in a wavy form and then heating, the gap between the weft yarns is pre-adhesive-fixed and connected before supply, and then the obtained laminate is fed onto a conveyor circulating in the weft direction, and cut into predetermined lengths After that, by rolling on a circulating belt that crosses at a different height from the conveyor and runs in the warp direction, a warp continuum made of the weft yarn is formed on the circulating belt,
Then, after laminating the warp-direction continuum and the traveling warp, the process is bonded and fixed.
Hereinafter, the “heat fusion yarn” is referred to as “heat fusion fiber”.

The heat-fusible fibers used in the present invention may be fibers made entirely of a single polymer component, but at least two types of polymer components having different melting points in terms of good dimensional stability. Composite fibers composited in a multilayer structure are preferred.
The cross-sectional structure of such a composite fiber may be a core-sheath type, a parallel type (side-by-side), a multi-core type, a multiple parallel type (striped), a concentric type, an eccentric type, a radial type, or the like. Among them, the core-sheath type conjugate fiber is particularly preferable in that the entire fiber surface is composed of the heat-sealing component, so that it can be reliably melt-bonded. In any of the cross-sectional structures, a polymer component having a low melting point is exposed on at least a part of the fiber surface. When a fiber made of a single polymer component is used, it is necessary to set the conditions for fusing very appropriately.

The method for laminating the weft yarn and the heat-fusible fiber in the first method of the present invention is not particularly limited. For example, the heat-fusible fiber may be placed on either the upper surface or the lower surface of the weft yarn. A method of always placing and laminating, a method of inserting one or more weft yarns so as to be arranged above and below the heat-fusible fibers and clamping the heat-fusible fibers with the weft yarns, or a fabric structure. Weaving method and the like can be mentioned. The apparatus for forming the fabric is not particularly limited, but is preferably supplied by an air jet, for example, in terms of production efficiency.

Hereinafter, the method of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view in the latitudinal direction showing an example of a laminating portion of the laminating device in which the first method of the present invention is carried out, and FIG. 3 is a cross-sectional view in the latitudinal direction. First, the weft yarn 2 drawn out from the creel 1 as a wide weft material and aligned at a predetermined pitch is heated by the heat roller 4 to remove distortion and to be preheated. Next, the heat-fusible fiber 5a is passed through the air jet device 6 so as to be orthogonal to the weft yarn.
, And is heated by pressing against the hot-press roller 8. By heating, the weft yarn and the heat-fusible fiber are fused at the intersection thereof, and both are adhered and fixed. The temperature of the hot-press roller 8 at that time is a temperature at which the heat-fusible polymer component of the heat-fusible fiber is melted. In the case of the composite fiber, the temperature is set to a temperature at which the polymer component having a higher melting point does not melt. Is set.

The laminate 22 in which the heat-fusible fibers are adhered and fixed to the obtained weft yarns is applied to the aqueous adhering liquid 21 a by the kiss roll 21.
Lattice conveyor 2 that circulates in the weft direction after coating in b
5 and then cut by a cutter 24 at predetermined lengths on the conveyor. Although the cut weft thread 27 is in a tensionless state, the shape is fixed because it is interconnected in the weft direction by the heat-fusible fibers, and the straightness is maintained without curving or inversion. The belt is satisfactorily transferred onto the circulating multi-strip belt 31 running in the warp direction at a height different from that of the conveyor, and the warp continuum of weft yarns 34 is formed. Subsequently, the warp material 26 coated with the adhesive solution 32 and the separating yarn body 35 are superimposed on the warp direction continuous body 34 of the weft yarn, and then heated by a heat roller 36 to bond the warp. Thus, a wide-weft laminated fabric body using the yarn as the weft material is obtained.

FIG. 2 is a cross-sectional view in the latitudinal direction showing an example of a laminating portion of the laminating device in which the second method of the present invention is carried out, and FIG. 3 is a cross-sectional view in the latitudinal direction. First, the weft yarn 2 drawn out from the creel 1 as a wide weft material and aligned at a predetermined pitch is heated by the heat roller 4 to remove distortion and to be preheated. Separately, the parallel yarns composed of the heat-fusible fibers 5b drawn from a large number of yarn windings on a creel (not shown) pass through the preheating device 11, and are then reciprocally driven with a predetermined width. Pass through. The heat-fusible fiber that has passed through the traverse comb 12 is laminated on a pre-heated weft yarn previously as a wavy diagonal parallel yarn having a wave width close to the traverse width, cooled by the cooling roller 10, and intersected with the weft yarn. The parts are fused and fixed.
At this time, it is preferable that the width of the preheating device is larger than the width of the weft by at least the traverse width.

The weft material 22 obtained by fusing the heat-fusible fibers to the obtained weft yarn has a shape as shown in FIG. A wavy oblique parallel yarn 40 made of a heat-fusible fiber is laminated and adhered to the weft yarn 2. By laminating the heat-fusible fibers in a corrugated manner, each corrugated oblique parallel yarn 30 intersects with a plurality of (seven in the figure) weft threads to form intersections. And
At each intersection, the weft yarn and the heat-fusible fiber are fused.

Next, the weft material 22 fused with the heat-fusible fiber
By the same process as described in the first method of the present invention described above, a wide-weft laminated fabric using yarn as a weft can be obtained.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings.

Embodiment 1 FIG. 1 is an elevational sectional view in the weft direction showing an example of an apparatus for carrying out the first method of the present invention, and FIG. 3 is an elevational sectional view of the method.

A weft 2 made of polyester fiber (1000 denier) drawn from the creel 1 is warped to a pitch of 5 mm by a warping comb 3, and then straightened by a heat roller 4 heated to a temperature of 150 ° C. After being divided into upper and lower parts by a predetermined number, the sheet is sent to the air jet device 6. In the air jet device 6, the heat-fusible fiber 5a is blown from the air jet nozzle to a predetermined position in a direction perpendicular to the weft between the upper and lower divided wefts. Are laminated and pinched. As the heat-fusible fiber, a 500-denier fully fused EV
A fiber was used.

Next, the weft yarn on which the heat-fusible fibers 5a are laminated is sent to a hot-press roller 8 provided with a holding belt 9, and the heat-fusible fibers are melted by hot-pressing the weft yarns. Are fused and fixed at the intersection of the two. Subsequently, after passing through the cooling roller 10 in order to suppress the heat shrinkage remaining in the heat fusible fiber, the weft material 22 having the heat fusible fiber adhered and fixed to the weft yarn, the aqueous adhesion liquid 21a is applied to the kiss roll 21b.
And then sent to the lattice conveyor 25 by pinch rolls 23a and 23b. The lattice conveyor 25 circulates horizontally, and its circulation speed is
Since the feed speed is set to be several percent higher than the feed speeds a and 23b, the weft material moves while being squeezed by the lattice bar, and is cut by the cutter 24 at every 230 cm corresponding to the width of the warp material.

Since the cutting weft 27 moves at the same speed as the lattice conveyor 25, there is a gap between the cutting weft 27 and the next cutting weft depending on the difference in feed speed. Belt retainer 28
a and 28b are circulating multi-strip belts 31 (hereinafter referred to as "belts 31") in which the front and rear ends of each cut weft are horizontally circulated in the upward direction in the longitudinal direction
(Abbreviated as "abbreviated"), and moves the belt 31 instantaneously up and down to a position where it comes into contact with the cut weft material.

Since the aqueous adhesion liquid 29 is applied to the belt 31 via the kiss roll 30, the cut weft material 27 in contact with the belt 31 adheres to the belt 31 and is repeated by repeating the cut weft material. Adheres to the belt 31 without a break and moves in the warp direction.

In this manner, the cut weft material 27 is formed into a warp continuum 34 of wefts extending continuously in the warp direction, and then separated from the belt 31 by a separation thread 35, so that the lower part of the lattice conveyor 25 is separated. As described above, the adhesive solution 32 is overlapped with the warp material 26 to which a required amount has been attached via pinch rolls 33a and 33b, and then heated by a hot roller 36 at 150 ° C. and pressed by a roller 37 to form a warp material and a weft material. Were laminated and integrated to obtain a wide-width laminated fabric body 38. The warp material 26 used here is formed by warping polyester fibers to a pitch of 5 mm and having a width of 230 cm.

The weft having the weft direction connected and fixed by the heat-fusible fibers does not bend or turn even when cut.
The sheet was very well transferred onto the belt 31. The obtained wide-width laminated fabric was very good in appearance.

Embodiment 2 FIG. 2 is an elevational sectional view in the weft direction showing an example of an apparatus for carrying out the second method of the present invention, and FIG. 3 is an elevational sectional view of the method.

The weft 2 made of polyester fiber (500 denier) drawn from the creel 1 is
After warping to a pitch of 3 mm, strain was removed by the heat roller 4 heated to a temperature of 160 ° C. Separately, the core-sheath type heat-fusible fiber 5b made of a large number of polyesters drawn from the creel is warped, and then the preheating device 1 is used.
1 and then traverse to the left and right to a small width with a traverse comb 12 to be laminated on the weft yarn as corrugated diagonal parallel yarns, and further to heat-fused fiber sheaths with a hot-press roller 13 heated to 160 ° C. After heating and melting the part, the cooling roller 10
, And heat-fusible fiber is adhesively fixed to the weft yarn in a waveform,
Weft material 22 was obtained.

Subsequently, an aqueous adhesion liquid 2
1a is applied by a kiss roll 21b, and the weft material 22 is applied to the lattice conveyor 2 by pinch rolls 23a and 23b.
Send to 5. Next, after forming a cut weft material in the same manner as in Example 1, it was attached and transferred onto a belt 31 to form a warp continuum 34 of weft yarn, which was separated from the belt 31 by a separating yarn 35. . Separately, a warp material 26 warped to a pitch of 2 mm and having a width of 230 cm passes under the lattice conveyor 25, and an adhesive solution 32 is applied via pinch rolls 33a and 33b. 34, and then heated with a hot roller 36 at 150 ° C., bonded and integrated to form a wide weft laminated cloth 3
8 was obtained.

The obtained wide weft laminated fabric was reinforced with weft threads over the entire width, and was suitable as an industrial reinforcing material. In the second embodiment, heat-fused fibers may be used for both the warp and the weft, and in this case, the adhesive solution is not required.

[0036]

According to the method of the present invention, the weft yarns are fixed by fusion with the heat-fusible fiber and connected in the weft direction. Therefore, when the weft yarns are cut on a conveyor, the arrangement of the weft yarns is reduced. It can be laminated and fixed to the warp material without being disturbed. Also,
Since it is not necessary to connect the weft yarns in a separate step, it is possible to extremely efficiently manufacture a wide-weft laminated fabric body using the yarns as weft material without increasing the size of the equipment.

[Brief description of the drawings]

FIG. 1 is a cross-sectional elevation view in the weft direction showing an example of a lamination portion of an apparatus for laminating in a weft manner according to a first method of the present invention.

FIG. 2 is an elevational sectional view in the weft direction showing an example of a laminating part of an apparatus for laminating by a second method according to the present invention.

FIG. 3 is a longitudinal sectional view of the device of FIGS. 1 and 2 in the meridional direction.

FIG. 4 is a plan view showing an example of a weft obtained by laminating and fixing heat-fusible fibers to a weft obtained by the second method of the present invention.

[Explanation of symbols]

Reference Signs List 1 creel 2 weft 3 warping comb 4 heat roller 5a, 5b heat fusible fiber 6 air jet device 7 heald 8 heat pressure roller 9 gripping belt 10 cooling roller 11 preheating device 12 traverse comb 13 hot pressure roller 21a Liquid 21b Kiss roll 22 Laminate (weft material) in which heat-fusible fibers are bonded and fixed to weft yarns 23a, 23b Pinch roll 24 Cutter 25 Lattice conveyor 26 Warp material 27 Cutting weft material 28, 28a, 28b Belt holder 29 Water adhesion Liquid 30 Kiss roll 31 Circulating multi-strand belt 32 Adhesive solution 33a, 33b Pinch roll 34 Latitudinal continuum of weft 35 Thread for separation 36 Heat roller 37 Roller 38 Wide weft lamination cloth 40 Wavy skew parallel thread

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-55-6541 (JP, A) JP-A-1-148861 (JP, A) JP-A-58-115162 (JP, A) 57222 (JP, B2)

Claims (2)

(57) [Claims] 1. A method for manufacturing a wide-width weft laminated cloth body in which a wide weft material cut to a length corresponding to the width of a wide warp material is continuously overlapped with a running warp material, and the warp material and the weft material are bonded and fixed. There, a large number of wefts running in parallel, is supplied on a conveyor circulating in the weft direction as the wide weft material, after cutting every predetermined length, the cut many wefts, By rolling on a circulating belt that crosses at a different height from the conveyor and travels in the warp direction, a continuum consisting of the weft yarns is formed on the circulating belt. After laminating the running warp material, the warp is adhered and fixed, and in the method for manufacturing a wide weft laminated fabric body using the yarn as the weft, the multiple weft yarns running in parallel are circulated in the weft direction. In the process of feeding on a conveyor, the heat-fused yarn is orthogonal to the weft yarn. A method for producing a wide weft laminated fabric having yarns as wefts, characterized in that the yarns are weft-bonded and then heated so that the weft yarns are adhesively fixed and connected before supply. 2. A method for producing a wide-weft laminated fabric body, wherein a wide weft material cut to a length corresponding to the width of a wide warp material is seamlessly overlapped with a running warp material, and the warp material and the weft material are bonded and fixed. There, a large number of wefts running in parallel, is supplied on a conveyor circulating in the weft direction as the wide weft material, after cutting every predetermined length, the cut many wefts, By rolling on a circulating belt that crosses at a different height from the conveyor and travels in the warp direction, a continuum consisting of the weft yarns is formed on the circulating belt. After laminating the running warp material, the warp is adhered and fixed, and in the method for manufacturing a wide weft laminated fabric body using the yarn as the weft, the multiple weft yarns running in parallel are circulated in the weft direction. In the process of supplying the heat-fused yarn to the weft, By laminating two or more obliquely and laminating in a wavy shape and then heating, a pre-adhesion-fixed weft-to-weft yarn is pre-adhered and connected to form a wide weft laminating fabric with yarn as weft. Production method.