JP2002030562A - Method for producing high density woven fabric and water-proof high density woven fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily provide at low costs a high density woven fabric having a soft touch and a high grade and a water-proof high density woven fabric having a high water-proof performance, good washing resistance, a soft touch and a high grade. SOLUTION: This method for producing the high density woven fabric, characterized by imparting high pressure liquid columnar flows to the surface of a woven fabric transferred in an open width state to fill the tissues of the woven fabric.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a high-density woven fabric and a waterproof high-density woven fabric.

[0002]

2. Description of the Related Art Materials such as tents for outdoor equipment, canvas for vehicles, airbags, bedding, casual, sports,
Various high-density woven fabrics have been applied to clothing applications such as athletic.

[0003] Conventionally, as a method for producing a high-density woven fabric, for example, using a fluid jet loom, twisted synthetic fiber ultrafine multifilaments are formed into warp without glue, and woven so that the cover factor is 2200 or more. Then, as proposed in a manufacturing method of performing a water-repellent treatment and a calendering treatment (Japanese Patent Laid-Open No. 11-302944), an appropriate loom is selected, and the weaving conditions and the like are examined in detail. Higher densities have been achieved by increasing the number of warps and wefts to be driven. However, the high density of the woven fabric according to such a conventional method increases the total number of warp yarns, which makes the work in the weaving preparation process and the weaving process complicated, and it is difficult to improve the weaving speed, and In addition, yarn breakage and the like are apt to occur during weaving, and there is a problem that the yield is reduced and the cost is increased.

[0004] As another method, a method has been proposed in which at least a part of a woven fabric is composed of high-shrinkable fibers, and the high-shrinkage fibers are shrunk in a dyeing step to increase the density of the woven fabric. However, in such a method, the texture of the woven fabric is likely to be hard, and there is a concern that the value of the woven fabric may be reduced in clothing.

[0005] In addition, as a method for producing a moisture-permeable waterproof fabric used for rain gear or sports clothing, there is a method of using a high-density fabric in which fibers having a single-filament fineness are woven at a high density, and performing a water-repellent treatment on the fabric. A method of producing a so-called non-coating type waterproof woven fabric which is not subjected to resin coating or lamination, for example, is subjected to a water repellent treatment and then crushed by heating calendering or the like. Since these methods tend to harden the texture of the woven fabric and impair the air permeability, resin coating and laminating tend to meet the needs of waterproof fabrics that have both a soft texture and excellent air permeability. However, in the former case, it is difficult to obtain a sufficient water pressure and there is a limit in increasing the waterproofness. In the latter case, dyeing → water repellency → calendar → resin coating (or laminating) There was a concern that the texture would become harder as the process proceeded. In addition, in the former case, there is a problem that the fabric structure and the arrangement of the constituent fibers are inevitably disturbed due to exercise during washing and wearing, and the waterproof property is reduced. Furthermore, in order to obtain a high-density woven fabric to be subjected to a water-repellent treatment or a heat calendering treatment, there is a problem in increasing the density of the woven fabric as described above.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and has a soft texture and a high-quality high-density fabric, and a soft texture while having high waterproofness and washing resistance. It is an object to provide a high-quality waterproof high-density fabric easily and at low cost.

[0007]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, by applying a high-pressure liquid columnar flow while running the woven fabric in a spread state, the softness of the woven fabric has been improved. After finding that the fabric structure can be filled and densified without impairing the texture, and further densified similarly using a fabric mainly composed of multifilaments having a single yarn fineness of 1.1 decitex or less as the fabric,
By applying a water-repellent treatment to this, it has been found that high water resistance and washing resistance can be exhibited while maintaining a soft texture, and the present invention has been achieved.

That is, the gist of the present invention is to firstly provide a high-density woven fabric characterized by filling a woven fabric structure by applying a high-pressure liquid columnar flow to the surface of a woven fabric that has been run in a spread state. Second, a high-pressure liquid columnar flow is applied to the surface of a woven fabric mainly composed of multifilaments having a single-fiber fineness of 1.1 dtex or less, which has been run in a spread state, and then subjected to a water-repellent treatment. This is a method for producing a waterproof high-density woven fabric.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
First, the method for producing a high-density woven fabric of the first invention will be described. In the method for producing a high-density woven fabric of the present invention, first, weaving is performed to obtain a woven fabric. The fibrous material, brand and weaving structure used for weaving the woven fabric are not particularly limited, and a woven fabric obtained by a conventional method using a known loom can be used.

Next, while running the obtained woven fabric in a spread state, a high-pressure liquid columnar flow is applied to the surface thereof. In addition,
As a process of applying a high-pressure liquid columnar flow to the surface of the fabric,
After weaving, after scouring, after presetting, after dyeing, etc., it may be performed at any time.

[0011] The high pressure liquid columnar flow in the present invention includes:
It refers to a liquid flow obtained by injecting a liquid at a high pressure through a fine injection hole. As the liquid, water or warm water is preferably used for ease of handling, but may contain a surfactant, an oil agent, a finishing agent, and the like. Also,
As the injection hole, a fine hole with a hole diameter of 0.05 to 1.00 mm, particularly a circular or long diameter of about 0.1 to 0.4 mm or 0.10 to 0.60 mm
Oval shaped micropores are preferred. Injection hole diameter is 0.05
If it is less than mm, the frequency of closing the injection holes increases, which is not practically preferable. On the other hand, if it exceeds 1.00 mm, the high pressure liquid columnar flow is too thick, and it tends to be difficult to obtain a uniform processing effect, which is not preferable.

The above-mentioned injection holes are preferably arranged in a straight line.
By injecting the liquid at a high pressure from an injection nozzle having a plurality of rows arranged at intervals of about 5 to 30 pieces / cm, a high-pressure liquid columnar flow can be provided. At this time, although it depends on the diameter of the injection holes, the sum of the dimensions of each of the arranged injection holes in the width direction is arranged with respect to the distance H in the width direction of the woven fabric. It is particularly preferable to design the arrangement density of the injection holes such that the value obtained by accumulating the dimensions of the injection holes is 0.7 H or more, which is advantageous in obtaining an even and uniform processing effect.

In the present invention, the flow velocity of the high pressure liquid columnar flow is preferably from 2 m / sec to 300 m / sec. If the flow velocity is less than 2 m / sec, the fabric may not be densified even if the high-pressure liquid columnar flow is applied for a long time due to energy shortage, which is not preferable. On the other hand, if the flow velocity exceeds 300 m / sec, the energy is too large, and cutting of the fibers constituting the woven fabric and large disturbance (misalignment) of the woven fabric may occur, which is not preferable.

The injection pressure of the high pressure liquid columnar flow is 0.4
A pressure of about 15 MPa is preferably employed. Injection pressure
If the pressure is less than 0.4 MPa, the treatment effect of the high-pressure liquid columnar flow is small, and it becomes difficult to fill the fabric structure, which is not preferable. On the other hand, when the injection pressure exceeds 15 Mpa, the texture of the fabric surface is disturbed to cause partial density unevenness, or the fibers constituting the fabric are cut to cause a decrease in the physical properties of the fabric,
It is not preferable because the fabric itself may be cut.

When the high-pressure liquid columnar flow is applied to the surface of the fabric, the distance between the surface of the fabric and the injection hole is 0.5 to 1
About 5 cm is preferable. If this distance exceeds 15 cm, the high-pressure liquid columnar flow will be disturbed or the energy loss will be large due to air resistance or static electricity generated by friction with air, resulting in a large decrease in treatment efficiency and a decrease in treatment effect. It is not preferable because uniformity may be caused. On the other hand, if the distance is less than 0.5 cm, the fabric may come into contact with the injection holes, or the surface texture of the fabric may be greatly disturbed, and the trace of the water flow may be expressed as a warp, and the fabric product It is not preferable because the value may be greatly impaired.

In the present invention, when the treatment for applying the high-pressure liquid columnar flow to the surface of the fabric is performed, it is necessary to run the fabric in a spread state. If the woven fabric is run not in the spread shape but in a rope shape or in a partially overlapped state, uniform treatment cannot be performed, so that density unevenness occurs and the surface feel becomes uneven.

The speed at which the woven fabric is run at this time is preferably in the range of 1 to 50 m / min, particularly 3 to 25 m / min, in that the woven fabric can be sufficiently filled. preferable. If the running speed of the woven fabric is less than 1 m / min, not only is it difficult to fill the woven fabric, but also the processing speed is too slow, and the productivity as a continuous process is unpreferably reduced. On the other hand, if the running speed of the fabric exceeds 50 m / min, the time during which the high-pressure liquid columnar flow can act on the fibers constituting the fabric becomes too short, and the fabric structure is difficult to be filled.

In the present invention, the reason why the fabric structure is filled by running the fabric during the process of applying the high-pressure liquid columnar flow to the surface of the fabric is considered as follows. That is, the high-pressure liquid columnar flow acts on the surface of the fabric relatively obliquely from above,
The warp, weft, and texture points constituting the woven fabric are slid in one direction, and the adjacent warp yarns and the weft yarns are driven closer to each other, thereby increasing the yarn density, and in particular, increasing the weft density. Is filled. On the other hand, when the operation is performed without running the woven fabric, the high-pressure liquid columnar flow acts on the surface of the woven fabric from above and vertically, and the effect of driving the yarn density hardly occurs.

In the present invention, the treatment for applying the high-pressure liquid columnar flow to the surface of the woven fabric involves entanglement of fibers between the fiber bundles constituting the woven fabric and at the texture points. It is difficult to disturb the fabric structure and the arrangement of the constituent fibers, which is a concern due to exercise during washing and wearing, etc.
The densified state is maintained semi-permanently. further,
By performing kneading and beating with the liquid columnar flow at the same time as the filling of the fabric structure, the texture is hardly hardened, and a soft, high-quality, high-density fabric is obtained.

Next, a method for producing a waterproof high-density woven fabric according to the second invention will be described. In the method for producing a waterproof high-density woven fabric of the present invention, it is necessary to use a woven fabric mainly composed of multifilaments having a single-fiber fineness of 1.1 decitex or less. Unless the woven fabric is mainly composed of multifilaments having a single-fiber fineness of 1.1 decitex or less, the desired waterproofness cannot be finally obtained. The woven fabric mainly composed of multifilaments having a single yarn fineness of 1.1 decitex or less can be obtained by weaving using a known loom by a conventional method. At this time, the fibers used for weaving can be used irrespective of the type of the material or the cross-sectional form of the fibers, regardless of the original yarn or the processed yarn, and the woven structure of the woven fabric is not particularly limited.

Next, the woven fabric is filled with a woven fabric structure by applying a process of applying a high-pressure liquid columnar flow to the surface of the woven fabric while running in a spread state, as in the first invention, to obtain a high-density woven fabric. . Since the woven fabric is mainly composed of multifilaments having a single yarn fineness of 1.1 decitex or less, when a high-pressure liquid columnar flow is applied, the warp and the weft are loosened not only in the vertical direction but also in the horizontal direction with respect to the woven fabric surface, As a result, the apparent fiber bundle becomes large, resulting in a superimposed structure in which the area where the warp and the weft intersect at the texture point becomes large. Therefore, in the high-density woven fabric obtained by applying the high-pressure liquid columnar flow, voids between yarns generated in the woven fabric are as small as possible. By applying a water-repellent treatment to this waterproof high-density woven fabric, it is possible to achieve high waterproofness that could not be obtained conventionally without calendering, even without calendering, non-coating type with high waterproofness A high-density waterproof fabric is obtained.

The method for subjecting the high-density fabric to the water-repellent treatment is not particularly limited. For example, a water-repellent solution is applied to the fabric by a padding method, a spray method, a dipping method, etc., and then dried, What is necessary is just to carry out by a conventionally well-known method, such as heat processing. As the water repellent at this time, a known water repellent such as a silicon-based compound or a fluorine-based compound may be used, but when the woven fabric is made of a polyester-based synthetic fiber, the water-repellent washing durability is high. From the viewpoint, a fluorine-based water repellent is preferably used. Further, in order to improve the washing durability of the water repellent function, it is preferable to use a melamine-based, imine-based, isocyanate-based cross-linking agent in combination with the water-repellent agent. Further, an antistatic agent for suppressing the generation of static electricity and various finishing agents for providing functionality by other auxiliary processing may be used in combination. The amount of the water repellent to be applied in the water repellent treatment, drying conditions, heat treatment conditions, and the like may be appropriately determined depending on the water repellent used, the product application, and the like, and are not particularly limited.

The waterproof high-density woven fabric obtained as described above has excellent waterproofness and washing resistance as described above. However, in order to further improve their performance, if necessary, Further, a calendar process may be performed.
The method of calendering may be performed by a normal method, for example, a method of passing a waterproof high-density fabric between a heated hot steel roll and a facing roll made of paper or resin can be adopted. . The calendering conditions include a heating temperature of 130 to 190 ° C and a calender pressure of 0.4.
1010 MPa and a speed of 1 to 30 m / min are preferred. Note that the process of performing the calendaring process may be performed before or after the water-repellent process.

By performing the above-described calendering treatment, the waterproofness and washing resistance are further improved. At this time, the texture of the high-density woven fabric obtained by the conventional method is originally hard, and when the calendering is performed in the finishing process, the texture is further hardened. However, in the waterproof high-density woven fabric obtained by the production method of the present invention, a multifilament having a single yarn fineness of 1.1 decitex or less is mainly used, and rubbing or throwing is performed in a process of applying a high-pressure liquid columnar flow. Therefore, a soft texture can be maintained even after the calendar processing. In addition, as described above, the waterproof high-density woven fabric obtained by the production method of the present invention involves entanglement of the fibers between the fiber bundles and the tissue points formed in the treatment for applying the high-pressure liquid columnar flow, so that the fabric is washed and worn. Since the fabric structure and the arrangement of the constituent fibers are less likely to be disturbed due to movement at the time or the like, excellent durability and high waterproof performance can be maintained for a long time.

[0025]

Next, the present invention will be described specifically with reference to examples. The properties of the woven fabric and the waterproof fabric shown in the examples were measured or evaluated by the following methods. Texture The hardness of the woven fabric was relatively evaluated by the following three grades by a sensory test by touch. ：: Soft. Δ: Somewhat hard. X: Hard.・ Waterproofness By the low water pressure method of water resistance measurement of JIS L-1092,
The water pressure resistance was measured for the unwashed (HL0) and the sample after home washing 10 (HL10). In addition, household washing, JIS L-
This was performed according to the 0217,103 method (home washing method).

Example 1 A plain woven fabric (150 cm width) was woven using a polyester multifilament of 122 dtex / 300 filaments for the warp and the weft, and scouring, presetting and dyeing were carried out by a conventional method. Then, using a spunlace device manufactured by Honeycomb, the woven fabric was spread at a speed of 3 m /
By running water at a temperature of 4.9 MPa at a pressure of 4.9 MPa from the spray nozzles in which 0.14 mm diameter holes are arranged in three rows at 160 mm intervals at 0.6 mm intervals while running at min. A high pressure water column was provided. Then, final setting was performed on the woven fabric by a conventional method to obtain a high-density woven fabric according to the present invention.

Comparative Example 1 The same polyester multifilament as in Example 1 was used for the warp and the weft, and the number of the warp and the number of the weft driving were increased as much as possible on the machine at the time of weaving to fabricate a plain woven fabric of high density. Then, scouring, pre-setting, dyeing,
Final set was performed to obtain a high-density woven fabric.

Example 2 The hot water shrinkage rate of the warp and the weft (a value measured in accordance with JIS L1013 A method, the same applies hereinafter) is 6% 78
A plain fabric (150 cm width) was woven using a nylon multifilament of decitex / 68 filaments, and scouring and presetting were performed on the plain fabric by a conventional method. Next, using a spunlace device manufactured by Honeycomb, the fabric was run at a speed of 10 m / min in a spread state, and a hole diameter of 0.3 mm was used.
A high-pressure water column-shaped flow was applied to the surface of the woven fabric by injecting room-temperature water at a pressure of 3.4 MPa from injection nozzles having 2 mm injection holes arranged in three rows at 160 mm intervals at 0.6 mm intervals. Then, the woven fabric was dyed and final-set by a conventional method to obtain a high-density woven fabric according to the present invention.

Comparative Example 2 A plain woven fabric was woven using a high shrinkage nylon multifilament of 78 decitex / 68 filaments having a hot water shrinkage of 20% for the warp and the weft, as the warp and the weft. Presetting, dyeing and final setting were performed, and the woven fabric was shrunk in the dyeing process to obtain a high-density woven fabric.

For Examples 1 and 2 and Comparative Examples 1 and 2,
Table 1 below shows the weaving density (raw machine density) during weaving, and the density (finish density) and hand of the obtained high-density woven fabric.

[0031]

[Table 1]

As is clear from the results shown in Table 1,
In the high-density woven fabric obtained by the present invention, the warp density and the weft density are increased, especially the weft density is remarkably increased. And had a soft texture.

Example 3 A plain woven fabric (150 cm width) was woven by using a polyester multifilament of 122 dtex / 300 filaments for the warp and the weft, and scouring, presetting and dyeing were carried out by ordinary methods. Next, a high-pressure water columnar flow was applied to the surface of the fabric in the same manner as in Example 1. After drying, it was immersed in a liquid for water-repellent treatment shown in Formula 1 below, and then squeezed with a mangle at a squeezing ratio of 80%. Further, after drying, a water-repellent treatment was performed by performing a heat treatment at a temperature of 180 ° C. for a time of 30 seconds to obtain a waterproof high-density woven fabric according to the present invention.

[Prescription 1] 10% by mass of a fluorine-based water repellent (Asahigard AG-970, manufactured by Meisei Chemical Industry Co., Ltd.) 0.1% by mass of melamine resin (Sumitex, manufactured by Sumitomo Chemical Co., Ltd.) Resin M-3)-Catalyst for melamine resin 0.1 mass% (Sumitec Resin Accelerator, manufactured by Sumitomo Chemical Co., Ltd.)-Water 88.8 mass%

Example 4 The waterproof high-density woven fabric obtained in Example 3 was subjected to friction calendering at a temperature of 160 ° C., a pressure of 4 MPa, and a speed of 10 m.
By performing calendering under the conditions of / min, a waterproof high-density woven fabric according to the present invention with further improved performance was obtained.

Comparative Example 3 A waterproof fabric was obtained in the same manner as in Example 3 except that the treatment for giving a high-pressure water columnar flow was omitted.

Comparative Example 4 The waterproof fabric obtained in Comparative Example 3 was subjected to a calendar treatment in the same manner as in Example 4 to obtain a waterproof fabric having improved waterproof properties.

Comparative Example 5 A waterproof, high-density woven fabric was obtained in the same manner as in Example 3, except that a plain woven fabric was woven using a polyester multifilament of 122 dtex / 36 filaments for the warp and the weft.

Comparative Example 6 The same polyester multifilament as in Example 3 was used to increase the number of warps and the number of wefts to be woven on a machine during weaving to fabricate a high-density plain fabric, which was then refined by a conventional method. , Presetting and dyeing were performed to obtain a high-density woven fabric. The same high-density woven fabric was subjected to the same water-repellent treatment as in Example 3 to obtain a waterproof high-density woven fabric.

For Examples 3 and 4 and Comparative Examples 3 to 6,
Table 2 below shows the weaving density (raw machine density) at the time of weaving, and the density (finishing density), water pressure resistance, and texture of the obtained waterproof high-density woven fabric and waterproof woven fabric.

[0041]

[Table 2]

As is clear from the results shown in Table 2,
The waterproof high-density woven fabric obtained in Example 3 without performing the calendering treatment according to the present invention is superior to the waterproof woven fabric obtained by performing the calendering treatment in Comparative Example 4 in that the initial waterproof pressure does not change much. Water resistance was shown, and it was superior to the washing resistance, in which there was little decrease in the waterproofing property due to washing, and the texture was soft. Furthermore, the calendered waterproof high-density fabric according to the present invention obtained in Example 4 is
In all of the performances, the waterproof fabric of Comparative Example 4 was superior to the waterproof fabric, and the soft texture was maintained. In Comparative Example 5 in which the multifilament having a single-fiber fineness of 1.1 decitex or less was not used, and in Comparative Example 6 in which a high-density woven fabric obtained by increasing the weaving density during weaving was used,
Both the washing resistance and the softness of the texture were inferior to those of the present invention.

[0043]

According to the method for manufacturing a high-density woven fabric of the present invention, it is possible to achieve a high-density woven fabric at low cost and for general purposes. Regardless, it is possible to produce a high-quality high-density fabric having a soft texture. In addition, according to the method for producing a waterproof high-density woven fabric of the present invention, it has high waterproof performance and washing resistance while being a so-called non-coating type regardless of resin coating or lamination, and has a soft texture and high quality. Can be easily manufactured at low cost.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3B154 AA07 AB20 AB27 BA60 BB35 BE04 BF07 DA09 DA10 4L033 AB05 AC03 CA17 CA22 CA69

Claims (2)

[Claims] 1. A method for producing a high-density woven fabric, which comprises filling a woven fabric by applying a high-pressure liquid columnar flow to the surface of a woven fabric that has been run in an expanded state. 2. A waterproof high-strength method comprising applying a high-pressure liquid columnar flow to the surface of a woven fabric mainly composed of multifilaments having a single-fiber fineness of 1.1 decitex or less and running in a spread state, and thereafter subjecting the woven fabric to a water-repellent treatment. Manufacturing method of high density fabric.