KR101537143B1 - Method for Manufacturing Woven Fabric with High Strength Fiber - Google Patents

Abstract

There is disclosed a method of manufacturing a fabric using high-strength fibers capable of improving the warp and productivity of the fabric as well as improving the performance and appearance of the fabric, by controlling the hardness of the warp beam in an optimal range during the beading process . The manufacturing method of the present invention includes a step of winding high-strength fiber provided from a regular beam onto a loom beam, wherein tension of the high-strength fiber wound on the loom beam is adjusted to have a hardness of 60 to 85 Hs, .

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a woven fabric using high-

The present invention relates to a method of manufacturing a fabric using high-strength fibers, and more particularly, to a method of manufacturing a fabric using a high-strength fiber, And a method of manufacturing a fabric using high-strength fibers capable of improving appearance quality.

Fabrics are made by crossing warp and weft by various methods. For example, according to the plain weave, the warp yarns alternately and periodically rise and fall between a relatively high position and a relatively low position to form a space, and the warp yarns are crossed almost at right angles with the warp yarns And inserted into the space.

For the fabrication of the fabrics, the warp yarns and weft yarns must first be prepared. As described in Korean Patent No. 10-0704230, the warp can be prepared by sequentially performing warp, warping, drawing-in, and the like.

The canning process is a process of unwinding yarn from a woodwind hanging on a creel, arranging the warp yarns in accordance with the designed warp density and width, and winding the warp yarns over the warp beam by the length of the designed fabric.

The beading process is a process of winding the warp yarns provided from a plurality of regular beam beams onto a loom beam by combining them with the number of oblique patterns of the designed fabric.

The passing process is the process of inserting warps wound on a loom beam into a dropper, a heald, and a reed.

When the individual high strength fibers used in the fabrication of the fabrics are multifilaments containing a large number of monofilaments, especially aramid multifilament yarns having a high process moisture content of at least 4.5% (Fluff: broken filament) occurred frequently and the fabricity was not good.

If a fabric is manufactured using a slope having a large number of teeth, the performance required for the fabric can not be normally realized, and the beauty of the fabric can not be attained. If the performance deterioration exceeds a certain level, the manufactured fabric is treated as a defective product, resulting in a reduction in the overall yield.

In addition, the greater the number of corners of the warp yarn, the greater the friction between the warp yarns and the guides during the weaving process, and thus there is a limit to increasing the winding speed of the yarn. It becomes a limiting factor.

Accordingly, the present invention is directed to a method of making a fabric using high strength fibers that can avoid problems due to limitations and disadvantages of the related art.

One aspect of the present invention is to provide a method of fabricating a woven fabric by controlling the hardness of the inclined beam in an optimal range in a beading process to increase the woven fabric's weir and productivity as well as to improve the performance and appearance of the woven fabric And to provide a method for producing a fabric.

Further features and advantages of the invention will be described hereinafter, and will in part be obvious from the description. Alternatively, other features and advantages of the invention may be learned through practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS The objects and other advantages of the present invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

According to an aspect of the present invention, there is provided a method of manufacturing a high strength fiber, comprising winding a high strength fiber having a strength of 20 g / d or more and a process water content of 4.5% or more in a warp beam; Winding the high strength fiber provided from the canonical beam into a loom beam wherein tension is applied to the high strength fiber such that the high strength fiber wound on the loom beam has a hardness of 60 to 85 Hs; Drawing-in the high-strength fiber wound on the loom beam; And crossing the penetrated high-strength fibers with the weft yarns.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are intended to provide further explanation of the invention as claimed.

According to the present invention, an inclination having little broken filaments can be prepared by managing the hardness of the inclined beam in the optimal range in the beading process of high-strength fibers having a high process water content of 4.5% or more.

In addition, by manufacturing the fabric using the inclined yarn having the reduced number of teeth thus prepared, the appearance of the final fabric can be enhanced, and the generation of defective products that do not satisfy the required performance is minimized, thereby improving the overall yield and the productivity of the fabric can do.

Other advantages of the present invention will be described in detail below with the related technical constitution.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
FIG. 1 is a view for explaining a slope preparing process according to an embodiment of the present invention, and FIG.
2 is a view for explaining a slope preparing process according to another embodiment of the present invention,
3 is a view for explaining a slope preparation process according to another embodiment of the present invention.

Hereinafter, embodiments of a method of manufacturing a fabric using the high-strength fibers of the present invention will be described in detail.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Therefore, the present invention encompasses all changes and modifications that come within the scope of the invention as defined in the appended claims and equivalents thereof.

In the present invention, 'high strength fiber' is defined as a fiber having a strength of 20 g / d or more, and aramid fiber, carbon fiber, ultrahigh molecular weight polyethylene fiber, and polybenzoxazole fiber are used as high strength fibers. Therefore, in the present invention, the 'fabric produced using high strength fibers' means a fabric woven using any one of aramid fiber, carbon fiber, ultrahigh molecular weight polyethylene fiber, and polybenzoxazole fiber as warp and weft yarns. Alternatively, different kinds of high strength fibers may be used as warp and weft, respectively.

To weave a fabric, a preliminary operation for weaving is required to prepare the warp and weft yarn in a proper state prior to weaving. Weaving preparation work includes slope preparation and weft preparation. Since the weft preparation process is simpler than the slope preparation process, a considerable part of the time required for weaving preparation is required for the slope preparation process.

The method of the present invention comprises winding a high strength fiber having a strength of at least 20 g / d and a process moisture content of at least 4.5% in a warper beam, winding the high strength fiber provided from the canon beam over a loom beam Strength is applied to the high strength fiber so that the high strength fiber wound on the loom beam has a hardness of 60 to 85 Hs - Drawing-in of the high strength fiber wound on the loom beam And crossing the passed high strength fiber with the weft.

Hereinafter, for convenience of explanation, the present invention will be described in detail with reference to a method of manufacturing a fabric using an aramid fiber as warp and weft.

Because aramid fibers have a high process moisture content of 4.5 to 7%, they are particularly vulnerable to the occurrence of broken filaments due to cannon and bad beading. Therefore, it is necessary to be specially managed by the method of the present invention so that the mohair which adversely affects the productivity, performance, and appearance quality of the fabric does not occur in the slope preparation process.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view for explaining an inclined preparation process using an aramid fiber according to an embodiment of the present invention; FIG.

First, aramid fibers wound in the form of a bobbin or a cone are unwound, the warp yarns are arranged in accordance with the designed warp density and width, and the warp beams are wound on the aramid fibers 10 by the length of the designed fabric. (100).

The aramid fiber may be a continuous multifilament yarn comprising a plurality of monofilaments (hereinafter referred to as 'filament yarn'). The aramid filament yarn can be produced by the following method.

First, an aromatic polyamide polymer is prepared by polymerizing an aromatic diamine and an aromatic diacid chloride in a polymerization solvent. The aromatic polyamide polymer is dissolved in a concentrated sulfuric acid solvent to prepare a radial dope. The radial dope is passed through a plurality of holes of the spinneret and then coagulated and dried to complete an aramid filament yarn having a strength of at least 22 g / d.

An aramid filament yarn according to an embodiment of the present invention comprises 400 to 1,600 monofilaments each having a fineness of 0.7 to 1.6 denier.

In the case of a filament yarn having a predetermined fineness, the smaller the fineness of the monofilaments constituting the filament yarn, the more monofilaments are included. The aramid filament yarn according to one embodiment of the present invention may comprise a relatively large number of monofilaments because it is composed of fine monofilaments having a fineness of 1.6 denier or less, and the woven fabric from which the aramid filament yarn has improved absorption Lt; / RTI >

On the other hand, a filament yarn made of monofilaments having a fineness of less than 0.7 denier makes it difficult to weave the fabric itself. Therefore, the multifilament used for the weaving of the fabric is advantageous from the standpoint of easiness of weaving, in that monofilament having a fineness of 0.7 or more is made.

When the aramid filament yarn 10 prepared as described above is supplied as a light yarn in the form of hank, cheese, cone, cop or the like, it can be used as a bobbin or a cone ).

The aramid filament yarns 10 are then unwound from a number of bobbins or cones and arranged in accordance with the designed warp density and width to wind the aramid filament yarns 10 onto the regular beam 100 by the length of the fabric designed.

Next, a beading process is performed in which the warp yarns 10 provided from the plurality of regular beam 100 are combined with the number of oblique patterns of the designed fabric and wound around the loom beam 300.

At this time, an appropriate amount of tension is applied to the warp yarns 10 such that the aramid fiber warp yarns 10 wound on the weaving yarn 300 have a hardness of 60 to 85 Hs at both the center and the edges of the warp beam. If the hardness of the plurality of warp yarns 10 (i.e., warp beam) wound on the loom beam 300 is less than 60 Hs, weaving may be impossible. On the other hand, when the hardness of the inclined beam exceeds 85 Hs, the thread may be broken and the thread drawing may not be performed.

The tension applied to the warp yarns 10 during the beading process can be controlled by the braking system between the canonical beam 100 and the loom beam 300. [ That is, by controlling the degree of braking which forcibly slows down the moving speed of the warp yarns 10 moving from the regular beam 100 to the loom beam 300 by rotation of the loom beam 300, The magnitude of the tension can be adjusted and consequently the hardness of the aramid fibers wound on the loom beam 300, i.e., the oblique beam can be adjusted.

Alternatively, a step of measuring the hardness of the warped beam wound on the loom beam 300 may be performed. When the measured slope beam hardness is out of the range of 60 to 85 Hs, the tension applied to the aramid fibers should be adjusted.

More specifically, when the measured slope beam hardness is less than 60 Hs, the tension applied to the aramid fibers during the beading process is increased. Conversely, when the hardness of the measured aramid fibers exceeds 85 Hs, the tensile force applied to the aramid fibers during the beading process is reduced. As described above, the tension applied to the aramid fibers during the beading process is determined by the degree of braking that forces the slowing of the travel of the warp yarns 10 to the loom beam 300. As the degree of braking increases, The amount of tension applied to the aramid fibers also increases.

A pass-through process is then carried out to sandwich the warp yarns wound on the loom, i.e., the oblique beams having a hardness of 60 to 85 Hs, into the dropper, heald, and reed.

The aramid fabrics are completed by crossing the aramid fiber warp yarns obtained from the above processes with the warp yarns. The above yarn may be the same aramid filament yarn as the warp yarn.

Alternatively, as illustrated in FIGS. 2 and 3, the aramid filament yarns 10 provided from the canonical beam 100 may pass through the oiling section 200 before being wound on the loom beam 300. The oil 211 is applied to the aramid filament yarns 10 when the aramid filament yarns 10 pass through the oiling portion.

2, the aramid filament yarn 10, which has been guided by the guide rollers 214, is conveyed to an oiling roller 213 (see FIG. 2) immersed in the oil 212 of the oil bath 211, ). The aramid filament yarn 10 is also temporarily immersed in the oil 212 of the oil bath 211 while being guided by the oiling roller 213 so that the oil 211 is applied to the aramid filament yarns 10 .

The oil 212 may include a smoothing agent and a concentration agent. As the smoothing agent, a mineral oil, a fatty acid ester, or a mixture thereof may be used, and as the concentration agent, an alkyl ether may be used. The smoothing agent and the bundling agent may be applied to the aramid filament yarns 10 to minimize protrusion of the hair from the aramid filament yarns 10.

Optionally, the oil 212 may further comprise an antistatic agent. The antistatic agent may be a phosphate, a sulfate, a sulfonate, a carboxylate, or a mixture thereof. The provision of the antistatic agent to the aramid filament yarns 10 can minimize the generation of static electricity which can cause protrusion of the filaments 10 from the aramid filament yarns 10.

The oil 212 comprises 60 to 90% by weight of a smoothing agent, 5 to 35% by weight of a sizing agent, and 1 to 8% by weight of an antistatic agent, and the remainder may further comprise water for emulsion stability have.

3, the oiling roller 223 is partly immersed in the oil 222 of the oil bath 221. In this embodiment, The oil ring roller 223 rotates while the oil 222 is applied to the whole. The oil 222 on the oiling roller 223 is transferred to the aramid filament yarn 10 when the aramid filament yarn 10 guided by the guide rollers 224 passes the oiling roller 223 do.

According to the embodiments of the present invention illustrated in Figures 2 and 3, when a beading process is performed to combine the aramid filament yarns 10 provided from the plurality of regular beam 100 into the design number of the fabric, The aramid filament yarns 10 may be provided with an appropriate sized tension and oil 212, 222 to provide a warp that has little bladders.

Next, a step of passing the warp yarns 10 wound on the loom beam 300, that is, the warp yarns 10 wound on the loom beam 300, is performed by a dropper, a heald, and a reed, As shown in FIG.

Then, a weaving process is performed to cross the tapered warp yarns 10 with the warp yarns. According to an embodiment of the present invention, the weft yarns may be aramid filament yarns like the warp yarns 10.

The process of weaving the fabric may be performed through a plain weave or a basket weave. The warp density and weft density may each be 5 to 15 yarns / cm and the resulting fabric may have a tensile strength of 3,000 to 20,000 N / 5 cm. However, the warp density, weft density and tensile strength of the fabric are not particularly limited in the present invention.

According to the present invention, by manufacturing the fabric using the warp yarns 10 having a reduced number of corners, the appearance of the final fabric can be enhanced, the occurrence of defective products that do not satisfy the required performance is minimized, Since the friction between the warp yarns 10 and the various guides is small, the yarn winding speed can be further increased and the productivity of the fabric can be improved.

Hereinafter, the present invention will be described in more detail with reference to examples and comparative examples.

Example 1

The warp and weft yarns were prepared using aramid filament yarn composed of 1,000 monofilaments having a fineness of 1.0.

For preparing the slope, a regularizing process, a beading process, and a passing process were sequentially performed.

By controlling the degree of braking by the braking system, the hardness of the inclined beam wound on the loom beam is 75 Hs at the center and 70 Hs at the edge of the loom when the beam is wound through the canonical beam ≪ / RTI >

The hardness of the inclined beam was measured with a ball tensioner based on ISO 868 EN ASTM D2240 method. Specifically, when a small portion of a material is deformed by using a ball embedded in the hardness meter itself, the hardness is measured by the resistance of the material.

On the other hand, an oiling step of applying an oil to the warp yarn was performed immediately before winding the warp yarn wound around the canonical beam through the beading process. The oil contained 85 wt% mineral oil and 5 wt% fatty acid ester as a smoothing agent, 5 wt% alkyl ether as a coalescent agent, 2 wt% phosphate as an antistatic agent, and 3 wt% water.

The warp and weft yarns thus produced were used to weave the fabric in plain weave. The warp density and weft density were 10 bands / cm, respectively.

Example  2

The fabric was woven in the same manner as in Example 1 except that the oiling step was omitted.

Example  3

The fabric was woven in the same manner as in Example 1 except that the degree of braking by the braking system was adjusted so that the hardness of the inclined beam wound on the loom beam was maintained at 80 Hs at the center and 75 Hs at the edge.

Comparative Example  One

The fabric was woven in the same manner as in Example 1 except that the hardness of the inclined beam wound on the loom beam was maintained at 58 Hs at its center and 53 Hs at its edge by adjusting the degree of braking by the braking system.

Comparative Example  2

The fabric was woven in the same manner as in Comparative Example 1, except that the oiling step was omitted.

Comparative Example  3

The fabric was woven in the same manner as in Example 1 except that the hardness of the warp beam wound on the loom beam was maintained at 90 Hs at its center and at 87 Hs at its edge by controlling the degree of braking by the braking system.

Comparative Example  4

The fabric was woven in the same manner as in Comparative Example 3, except that the oiling step was omitted.

The batt content of each of the fabrics produced by the above examples and comparative examples was measured by the following method, and the results are shown in Table 1 below.

Mow content measurement

After extracting 50 slopes from the fabric, a knot was used to prepare a sample. The number of bumps having a length of 2 mm or more per 300 m of the filament yarn was measured by using a running mower (Techno-Mac, BT201) while slowly moving the sample. The number of knots was excluded when measuring the number of knots.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Number of bobs having a length of 2 mm or more per 300 m of filament yarn
7
10
9
37
45
32
49

10: warp 100: regular beam
200: Oil ring part 211, 221: Oil tank
212, 222: oil 213, 223: oiling roller
214, 224: guide roller 300: loom beam

Claims (8)

Winding a high-strength fiber having a strength of 20 g / d or more and a process water content of 4.5% or more in a warper beam;
Winding the high strength fiber provided from the canonical beam into a loom beam wherein tension is applied to the high strength fiber such that the high strength fiber wound on the loom beam has a hardness of 60 to 85 Hs;
Drawing-in the high-strength fiber wound on the loom beam; And
And crossing the passed high strength fiber with a weft yarn. The method according to claim 1,
Measuring the hardness of the high strength fiber wound on the loom beam; And
Further comprising the step of controlling a tensile force applied to the high-strength fiber when the measured hardness of the high-strength fiber is out of the range of 60 to 85 Hs. 3. The method of claim 2,
The step of controlling the tensile strength of the high-strength fiber may include: increasing the tensile force applied to the high-strength fiber when the measured hardness of the high-strength fiber is less than 60 Hs, and, when the measured hardness of the high- Wherein the step of forming the fabric is performed by reducing the tensile force applied to the fabric. The method according to claim 1,
Wherein the high-strength fiber is an aramid filament yarn. 5. The method of claim 4,
Wherein the weft yarn is an aramid filament yarn. The method according to claim 1,
Further comprising the step of applying oil to the high-strength fiber provided from the canonical beam before winding the high-strength fiber into the loom beam. The method according to claim 6,
Wherein the oil comprises 60 to 90 wt% of a smoothing agent, 5 to 35 wt% of a sizing agent, and 1 to 8 wt% of an antistatic agent. 8. The method of claim 7,
The smoothing agent may be a mineral oil, a fatty acid ester, or a mixture thereof,
The focusing agent is an alkyl ether,
Wherein the antistatic agent is a phosphate, a sulfate, a sulfonate, a carboxylate, or a mixture thereof.

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