JP2003286628A - Method for producing woven fabric - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a weaving technique for producing a woven fabric using a yarn having a low birefringence and a yarn having a high birefringence as wefts. <P>SOLUTION: This method for producing the woven fabric is characterized by paralleling and picking a polyester multifilament yarn having a birefringence Δn of 30×10<SP>-3</SP>to 90×10<SP>-3</SP>and a polyester multifilament yarn having a birefringence Δn of 100×10<SP>-3</SP>to 200×10<SP>-3</SP>in a loom. A polyamide multifilament yarn having a birefringence Δn of 10×10<SP>-3</SP>to 40×10<SP>-3</SP>and a polyamide multifilament yarn having a birefringence Δn of 50×10<SP>-3</SP>to 80×10<SP>-3</SP>may be used. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a polyester multifilament yarn having a birefringence Δn of 30 × 10 ^{−3 to} 90 × 10 ⁻³ and a birefringence Δn of 100 × 10 ^−3.
The present invention relates to a method for weaving a woven fabric using polyester multifilament yarns of about 200 × 10 ⁻³ .

[0002]

2. Description of the Related Art Conventionally, a water jet loom capable of weaving a filament woven fabric at high speed and at low cost has been used.

However, the birefringence Δn is 30 × 10 ^{−3 to} 90.
In order to weave a woven fabric using a polyester multifilament yarn (usually called POY) of × 10 ^-3 as a weft yarn, the polyester multifilament yarn is stretched by weft-inserting water in a water jet loom to cause a horizontal shrinkage defect. However, since a quality problem occurs, a rapier room or an air jet room in which the tension applied to the weft yarn is small has been used. Further, in order to weave in a water jet loom, it was necessary to set the number of revolutions to 300 rpm or less and to weave with the tension applied to the weft yarn as small as possible.

When weaving a woven fabric using two kinds of weft yarns in a water jet loom, weft insertion is performed by using different jet nozzles. The weft yarns have a birefringence index Δn of 30 × 10 ^-3 〜. 90 × 10 ⁻³ polyester multifilament yarn and birefringence Δn 100 × 10 ^{−3 to} 20
When a polyester multifilament yarn of 0 × 10 ⁻³ (usually called as a drawn yarn or high-speed yarn making) is used, a yarn having a high birefringence Δn is not a problem, but a yarn having a low birefringence Δn is a weft-inserted water. There was a problem that it was stretched and caused a horizontal shrinkage.

Furthermore, the birefringence Δn of the weft yarn is 30.
× 10^-3~ 90 x 10^-3Is polyester mulch fiber
Lament yarn and birefringence Δn is 100 × 10^-3~ 200x
10 ^-3Polyester multifilament yarn which is
If you want to put horizontal in the water jet room,
Twisted yarn so that high birefringence and low birefringence are not separated
Or it is necessary to perform air confounding, which increases the manufacturing process
There was a problem that

[0006]

The birefringence Δn is 30 ×.
Polyester multifilament yarn of 10 ^{−3 to} 90 × 10 ⁻³ and birefringence Δn of 100 × 10 ⁻³ to 200 × 1
0 ^-3 polyester multifilament yarn which is to be woven fabric used in the weft, in the water jet loom weaving with rapier loom or air jet loom for the yarn of the low birefringence is stretched by lateral insertion injection water For weaving in a water jet loom, it is necessary to perform twisting or air entanglement so that the low birefringence yarn and the high birefringence yarn are not separated.

The present invention solves the above-mentioned problems and adds to the weft yarn.
Refractive index Δn is 30 × 10^-3~ 90 x 10^-3Is Polje
Steal multifilament yarn and birefringence Δn is 100 ×
10 ^-3~ 200 × 10^-3Is polyester mulch fiber
Woven fabrics that use Lament yarn are twisted or air entangled
Weaving in a water jet loom
The purpose is to provide technology.

[0008]

One aspect of the present invention is to provide a birefringence index Δ in weaving with a water jet loom.
Polyester multifilament yarn in which n is 30 × 10 ^{−3 to} 90 × 10 ⁻³ and birefringence Δn is 100 × 10 ⁻³ to
This is a weaving method in which 200 × 10 ⁻³ polyester multifilament yarns are aligned and wefted on a loom.

According to another aspect of the present invention, in weaving with a water jet loom, the birefringence Δn is 10 × 10.
^-3 to 40 × 10 ^-3 polyamide multifilament yarn and a polyamide multifilament yarn having a birefringence Δn of 50 × 10 ^-3 to 80 × 10 ^-3 are aligned on a loom and wefted. is there.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a low birefringence yarn and a high birefringence yarn are aligned on a loom and wefted in a water jet loom. As a result, the low birefringence yarn is closely adhered to the high birefringence yarn even without twisting or air entanglement, and therefore the tension of the jet water is not applied to the weft yarn. The yarn with high birefringence will be borne. Therefore, a low birefringence index yarn can be inserted horizontally without being stretched.

The yarn used in the present invention may be polyester multifilament yarn or polyamide multifilament yarn.

Here, the polyester includes polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, etc., and may be a copolyester. The polyamide includes nylon 6, nylon 66 and the like, and may be a copolyamide.

The birefringence referred to in the present invention is a value measured by polarization microscopy. For example, type X manufactured by Nippon Kagaku
It can be measured by using a polarization microscope of TP-11.

The cross-sectional shape of the multifilament yarn may be round or irregular.

The woven fabric structure is mainly a plain woven fabric, but the effect of the present invention can be obtained even with other modified fabrics such as twill and satin.

The fineness ratio for aligning the low birefringence yarn and the high birefringence yarn is preferably 90:10 to 10:90.

[0017]

EXAMPLES Next, the present invention will be described more specifically by way of examples.

Example 1 As shown in Table 1, the warp yarn has a 84dtex-36f polyethylene terephthalate processed yarn, and the weft yarn has a birefringence Δ.
A 265 dtex-48f polyethylene terephthalate yarn having an n of 42.3 × 10 ⁻³ and a birefringence Δn of 179.1.
Using polyethylene terephthalate yarn of 330dtex-10f which is × 10 ^-3, it has a flat design and a reed width of 177.3c.
A woven fabric having m and a greige density of 107 × 42 / 2.54 cm is shown in Table 3 under the water jet loom and the weaving conditions.
The low birefringence yarn 1 and the high birefringence yarn 2 were aligned by the compounding guide 3, wound on the length-measuring drum 4, and weft-inserted by the jet nozzle 5, as shown in FIG. The results are shown in Table 4.

The drawing rate of the low birefringence yarn was 1.2%, which was less than 3% which affects the quality, and there was no problem in the quality.

Comparative Example 1 As shown in Table 2, the warp yarn has a 84dtex-36f polyethylene terephthalate processed yarn, and the weft yarn has a birefringence Δn.
Of 265 dtex-48f polyethylene terephthalate yarn of 42.3 × 10 ^-3 with a flat design and a reed width of 1
A woven fabric having a 77.3 cm and greige density of 107 × 42 yarns / 2.54 cm is shown in Table 3 under the water jet loom and the weaving conditions. As shown in FIG.
It was wound up on a cloth, weft-inserted with a jet nozzle 5, and woven. The results are shown in Table 3.

The low birefringence index yarn was drawn by 10.3% by the jet water, greatly exceeding 3% which affects the quality, and a woven fabric defect occurred.

Comparative Example 2 As shown in Table 1, the warp yarn is a polyethylene terephthalate processed yarn of 84 dtex-36f, and the birefringence Δn is 42.3.
× 10 Polyethylene terephthalate yarn and the birefringence Δn of 265dtex-48f is ^-3 using polyethylene terephthalate yarn of 330 dtex-10f is 179.1 × 10 ^-3, reed insertion width flat organization 177.3Cm, greige With a water jet loom and weaving conditions shown in Table 3 for a woven fabric having a density of 107 × 42 yarns / 2.54 cm, the low birefringence yarn 1 and the high birefringence yarn 2 were measured separately as shown in FIG. It was wound on a long drum 4, wefted by separate jet nozzles 5, and woven. The results are shown in Table 4.

High birefringence yarns are not drawn, but low birefringence yarns are drawn 10.3%, affecting quality.
%, Which was a fabric defect.

Table 1 shows the fabric standard tables of Example 1 and Comparative Example 2.

[0025]

[Table 1]

Table 2 shows a fabric standard table of Comparative Example 1.

[0027]

[Table 2]

Table 3 shows the loom type and the loom conditions of Examples and Comparative Examples.

[0029]

[Table 3]

Table 4 shows the amount of drawing and the quality of the low birefringence index yarns by weft insertion in Examples and Comparative Examples.

[0031]

[Table 4]

[0032]

According to the present invention, the weft yarn has a birefringence Δn.
Is 30 × 10 ^{−3 to} 90 × 10 ⁻³ and the birefringence Δn is 100 × 10 ⁻³ to 2
A water jet loom capable of weaving a woven fabric using a polyester multifilament yarn of 00 × 10 ⁻³ at a low cost with respect to a rapier room or an air jet loom, and a low birefringence yarn has a quality problem without a twisting yarn or an air entanglement process. It becomes possible to weave at a draw ratio of 3% or less at which the roll-out occurs.

Further, the length measuring drum and the jet nozzle can be woven by one loom. Further, since the weaving is performed by one jet nozzle, the weaving machine can be easily adjusted as compared with the case where two jet nozzles are used.

Further, since the twisting yarn or the air entanglement process is not required, the process time can be greatly shortened.

[Brief description of drawings]

FIG. 1 is a schematic view showing an example of a weft insertion method according to the present invention.

FIG. 2 is a schematic view showing an example of a horizontal insertion method according to a conventional technique.

FIG. 3 is a schematic diagram showing another example of a conventional horizontal insertion method.

[Explanation of symbols]

1: High birefringence yarn 2: Low birefringence yarn 3: Composite yarn guide 4: Measuring drum 5: Horizontal insertion nozzle 6: Water spray

Claims (3)

[Claims] 1. In weaving with a water jet loom, a polyester multifilament yarn having a birefringence Δn of 30 × 10 ^{−3 to} 90 × 10 ⁻³ and a birefringence Δn of 100 × 10 ⁻³ to 200 × 10 ^−. A weaving method characterized in that the polyester multifilament yarns of ³ are aligned on a loom and horizontally inserted. 2. A polyamide multifilament yarn having a birefringence Δn of 10 × 10 ⁻³ to 40 × 10 ⁻³ and a birefringence Δn of 5 in weaving by a water jet loom.
A weaving method, characterized in that polyamide multifilament yarns of 0 × 10 ⁻³ to 80 × 10 ⁻³ are aligned on a loom and horizontally inserted. 3. The weaving method according to claim 1, wherein different kinds of weft yarns aligned on the loom are wefted with one jet nozzle.