JP3300260B2 - Fabric manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for weaving polytrimethylene terephthalate multifilament yarn. More specifically, the present invention relates to a weaving method using an air jet loom using polytrimethylene terephthalate multifilament yarn as a weft.

[0002]

2. Description of the Related Art Conventionally, when a weft is a polytrimethylene terephthalate multifilament yarn, a weaving means is a shuttle loom or a water jet loom. Generally, when weaving a polytrimethylene terephthalate multifilament yarn with a shuttle loom, the productivity is very poor because the number of rotations is limited due to the characteristics of the loom. When polytrimethylene terephthalate multifilament yarn is used for the weft, when the weft is unwound from the shuttle in which the tube around which the weft is set is set, the weft is easily subject to great resistance, and the weft becomes fuzzy or excessively weft. The quality of the woven fabric is greatly reduced, for example, by the occurrence of sink marks, in which the gloss characteristics of the yarn organized as a woven fabric change due to a high tension.

On the other hand, when weaving polytrimethylene terephthalate multifilament yarn using a water jet loom, weft insertion is performed by jetting water with a large conveying force from a nozzle together with the weft, so that the number of revolutions of the weaving machine increases, and the production of textiles increases. The water pressure from the injection nozzle is as large as 15 to 50 kg / cm ^2, and if the weft is blown at such a high injection pressure, a very large tension will be applied to the weft. When all the wefts stored in the drum have been unwound, the impact of the wefts becomes considerably large. Therefore, the weft yarn is woven in a stretched state under a large tension, resulting in sink marks, or a single yarn of a multifilament yarn being cut, resulting in a significant decrease in woven fabric quality. Further, the force of the stretched and woven weft to return due to the high elastic recovery rate causes the yarn to shrink, causing uneven wrinkles on the woven fabric surface, resulting in a claw-like defect and deteriorating the quality of the woven fabric. these
The problem is that low yarn yarns, especially false twisted yarns,
In this case, weft sink is likely to become apparent.

[0004] As described above, in the shuttle loom and the water jet loom, the problems of the weaving efficiency and the fabric quality of the polytrimethylene terephthalate multifilament yarn have not been sufficiently cleared.

[0005]

The purpose of the [0008] The present invention is, poly
Trimethylene terephthalate multifilament yarn
Mainly low productivity shuttle looms and low speed water jets
However, the current problem that satisfactory production has not been achieved
High-speed weaving can be performed stably and productivity is excellent.
To provide a weaving method for fabrics with good quality and quality
It is in.

[0006]

That is, the present invention provides a method for weaving at least a polytrimethylene terephthalate multifilament yarn having a number of entanglement of at least 4 yarns / m and not more than 8 yarns / m . The drum that stores the weft yarn is a pin
This is a weaving method characterized by weaving with a type air jet loom. Hereinafter, the present invention will be described in detail. In the present invention, the polytrimethylene terephthalate multifilament yarn refers to a polyester fiber having a trimethylene terephthalate unit as a main repeating unit, and the trimethylene terephthalate unit is about 50 mol% or more, preferably 70 mol% or more, and more preferably 80 mol% or more. Mol% or more, more preferably 90 mol% or more. Therefore, the total amount of the other acid component and / or glycol component as the third component is about 50 mol% or less, preferably 30 mol% or less, more preferably 20 mol% or less, and still more preferably 10 mol% or less. Polytrimethylene terephthalate.

[0007] Polytrimethylene terephthalate is synthesized by combining terephthalic acid or a functional derivative thereof with trimethylene glycol or a functional derivative thereof in the presence of a catalyst under appropriate reaction conditions. In this synthesis process, an appropriate one or two or more third components may be added to form a copolymerized polyester, or
Polyester other than polytrimethylene terephthalate such as polyethylene terephthalate, nylon, and polytrimethylene terephthalate may be separately synthesized, blended, or composite-spun (sheath core, side-by-side, etc.).

The third component to be added includes aliphatic dicarboxylic acids (oxalic acid, adipic acid, etc.), alicyclic dicarboxylic acids (cyclohexane dicarboxylic acid, etc.), aromatic dicarboxylic acids (isophthalic acid, sodium sulfoisophthalic acid, etc.). ), Aliphatic glycols (ethylene glycol, 1,2
-Propylene glycol, tetramethylene glycol, etc.), alicyclic glycols (cyclohexanediol, etc.), aromatic dioxy compounds (hydroquinone bisphenol A, etc.), aliphatic glycols containing aromatics (1,4
-Bis (β-hydroxyethoxy) benzene, etc.), polyether glycols (polyethylene glycol, polypropylene glycol, etc.), aliphatic oxycarboxylic acids (ω
-Oxycaproic acid), aromatic oxycarboxylic acids (P
-Oxybenzoic acid, etc.). Compounds having one or more ester-forming functional groups (such as benzoic acid or glycerin) can also be used as long as the polymer is substantially linear. Further, matting agents such as titanium dioxide, stabilizers such as phosphoric acid, ultraviolet absorbers such as hydroxybenzophenone derivatives, crystallization nucleating agents such as talc, lubricating agents such as aerosil, antioxidants such as hindered phenol derivatives, and the like. A fuel, an antistatic agent, a pigment, a fluorescent brightener, an infrared absorber, an antifoaming agent, and the like may be contained.

In the present invention, the polytrimethylene terephthalate multifilament yarn is spun by 150
After obtaining an undrawn yarn at a winding speed of about 0 m / min,
Whichever of the method of drawing and twisting at about 3.5 times, the direct drawing method directly connecting the spinning and drawing steps, and the high-speed spinning method (spin draw or spin take-up method) with a winding speed of 5000 m / min or more are adopted. Good.

The form of the multifilament yarn may be uniform in the length direction or thick and thin, and the cross section may be round, triangular, L-type, T-type, Y-type, W-type, Yatsuba. Type,
It may be a polygonal type such as a flat type, a dogbone type, a multi-leaf type, a hollow type or an irregular type. Further, as the form of the yarn, a multifilament yarn (including an ultrafine yarn) having a single yarn denier of about 0.1 to 5 denier, a sweet twisted yarn to a strong twisted yarn, a mixed fiber yarn,
False twisted yarns (including POY drawn false twisted yarns), fluid jet processed yarns, and the like are available.

In the range not to impair the object of the present invention, usually within a range of 30% by weight or less, another fiber yarn is entangled and mixed (different shrinkage mixed yarn with high shrinkage yarn, etc.), twisted Alternatively, they may be mixed by means such as composite false twisting (elongation false twisting, etc.), two-feed fluid jetting or the like. The air jet loom referred to in the present invention is
As shown in FIG. 1, a storage drum 2 for storing a length corresponding to the width of a fabric is provided for the weft 1, and while the stored weft 1 is unwound from the storage drum 2, the storage drum 2 is inserted into the yarn introduction hole 4 of the deformed reed 3. A deformed reed having a main nozzle 5 to fly and further having a yarn introduction hole and FIG.
As shown in FIG. 2, a plurality of auxiliary nozzles 6 are arranged longitudinally at an arbitrary distance in front of the lower part of the yarn introduction hole 4 of the modified reed.

The air jet loom according to the present invention may have a plurality of main nozzles and storage drums, and may be provided with a mechanism capable of inserting two or more kinds of wefts alternately or in an arbitrary number. . As shown in FIGS. 1 and 2, the weft insertion method of the air jet loom according to the present invention employs a weft 1
Of the deformed reed 3 starts to fly through the warp yarns 7 between the opened warp yarns 7 by the jet airflow from the main nozzle 5, and the weft 1 is moved to a plurality of auxiliary nozzles 6 adjacent to the main nozzle 5. Are sequentially delivered by the airflow injected into the yarn introduction hole from the air injection port 8 of the first nozzle, and fly in the direction opposite to the main nozzle to be weft-inserted.

The weft insertion by the air jet loom
Since the weft flies at an air injection pressure of 0.5 to 5 kg / cm ² , the air injection pressure is lower than the water injection pressure in the water jet loom. Cuts are less likely to occur. Preferably, the auxiliary nozzle shown in FIG. 1 is moved as close as possible to the center of the yarn introduction hole, and the interval between the auxiliary nozzles is shortened in order to make the weft fly while reducing damage to the weft at a low air jet pressure. It is preferable to prevent attenuation of the air flow in the yarn introduction hole by increasing the number of nozzles.

Further, the opening amount of the warp may be increased by the amount corresponding to the function of the yarn introduction hole and the auxiliary nozzle of the deformed reed. By reducing the opening amount of the warp, the warp becomes low in tension, and the filament breakage and fuzzing may occur. It is a weaving method that can be held down, has a high-speed following property, and is excellent in weaving efficiency. In the present invention, the storage drum of the air jet loom has a function of measuring, storing, and unwinding the weft length corresponding to the width of the fabric, but the drum portion of the storage drum is preferably a pin type, and when the weft is wound, Has a low contact resistance when unwound, which is preferable for weaving efficiency and high quality fabric production. The material of the drum portion for winding the weft is not limited in particular, mirror finish stainless steel, or the like that has been subjected to finish <br/> Gearuiwa chrome plated satin.

The modified reed used in the present invention is
The upper jaw, lower jaw and bottom edge of the yarn guide hole may be angled to control the jet air flow from the nozzle in order to stably fly the weft into the yarn guide hole. Further, the air flow may be controlled by changing the area of the yarn introduction hole. In the present invention, the flight of the polytrimethylene terephthalate multifilament yarn of weft is disclosed in
As disclosed in Japanese Patent Application Laid-Open No. 3-6765, a method of applying some resistance to the weft immediately before the end of the flight of the weft to reduce the impact at the end of the weft insertion and to prevent the sink defect of the weft from being used. Good. Further, a method of weakening the jet air immediately before the end of the weft flight is also effective in preventing sink defects of the weft.

In the present invention, when a polytrimethylene terephthalate multifilament yarn is used as the warp, a paste oil agent is applied to the warp in order to withstand the rubbing action and tension action with a reed or heald. The sizing agent may be an acrylic sizing agent, a polyvinyl alcohol- based sizing agent, or a mixed sizing agent based on a combination thereof. As for the polytrimethylene terephthalate multifilament yarn of the weft, it is preferable to apply a fluid treatment or the like to entangle the yarn or to apply an oil agent. The confounding of the yarn,
It is necessary to improve the weft weaving efficiency and to give the woven fabric quality and quality in a range where the quality and quality of the woven fabric are never reduced, and the range of 2 yarns / m to 20 yarns / m is preferable.
If the number of entanglements is less than 2 / m, the bunching of the weft is liable to be reduced, and several single filaments of the multifilament are separated during the flight, resulting in poor flight, or the weft having a woven fabric width. Even when flying, there may be a knot defect in which several loose single yarns come out on the fabric. Further, at the time of high-speed unwinding, there is also a disadvantage that the tension when the weft is pulled out from the weft yarn feeder increases, and the weft yarn feeder is deformed.

On the other hand, if the number of entanglements exceeds 20 pieces / m, the convergence of the yarn becomes too good, the weft becomes difficult to fly, and it becomes necessary to extremely increase the air jet pressure. As a result, the amount of air used also increases, and the jet of air flow also hits the warp, causing the warp to become fluffed or streaked, thereby deteriorating the fabric quality. In addition, when there are many interlacing points, the interlacing points are conspicuous in the weft of the woven fabric, causing an irritating defect such as abrasion, and also significantly lowering the quality of the woven fabric. In particular, polytrimethylene terephthalate multifilament yarns are less likely to be entangled due to the yarn properties of a lower Young's modulus and a higher elastic recovery rate than polyester yarns, and the irritating defects are conspicuous.

The more preferable number of entanglements is in the range of 4 / m to 8 / m, so that the flying property of the weft and the illness defect of the fabric become very small and the knot defect is eliminated. In the present invention, the confounding of the yarn by the fluid treatment is described in
This is performed by a well-known fluid processing apparatus disclosed in, for example, JP-A-7-1175. The number of confounds is a value obtained based on the measurement method described in US Pat. No. 2,985,995, and a load of total denier × 0.2 g is suspended at the lower end of a confounding point having a sample length of about 1 m. To drop the sample,
Insert a chrome-plated hook with a diameter of about 0.7 mm into the center of the thread bundle above the sample, and gently raise it while supporting it with insect pins until it is stopped at the entanglement above the insertion position. It is lowered gently until it is stopped at the lower entanglement, and its lowering length Lcm is measured. This was repeated and measured 50 times, and the average L (bar) was calculated as 100 /
This is the value obtained by L (bar). The lowering speed of the hook is 1 cm / sec.

Next, the application of the oil agent to the weft in the present invention should be carried out so that the amount of the oil agent adhered is within an appropriate range that does not cause flying property in an air jet loom and no knot defect. Therefore, it is preferable that the content is provided in the range of 0.2% by weight to 1.2% by weight. However, it is necessary to adjust the amount of oil to be applied in consideration of the number of entanglements.Adding a large amount of oil to the yarn with a high number of entanglements significantly reduces the flight performance in the air jet loom. Care must be taken when applying the amount of the oil agent.

In the production method of the present invention, there are no particular restrictions on the type of oil agent and the like, and it may be a commonly used oil agent containing a smoothing agent, an emulsifier, an antistatic agent and the like. Examples of the leveling agent include mineral oil, sulfur-containing polyhydric alcohol esters, monobasic acid esters, and the like. Examples of the emulsifier include nonionic surfactants such as alkylphenol ethylene oxide adducts, higher alcohol ethylene oxide adducts, and fatty acid ethylene oxide adducts. Further, as the antistatic agent, quaternary ammonium salts represented by distearyl dimethyl ammonium chloride, divalmityl dimethyl ammonium chloride and the like, alkyl phosphate amine salts and the like are used.

In the present invention, the form of the weft is preferably a cheese or a cone rather than a parn. The texture of the woven fabric obtained by the method for producing the woven fabric of the present invention includes a flat, twill, satin texture and the like, but the texture is not particularly limited. Further, the kind of the woven fabric obtained by the method for producing the woven fabric of the present invention may be a woven fabric using polytrimethylene terephthalate multifilament yarn for the warp and the weft, or a composite woven fabric using a plurality of wefts or a plurality of warps. At least one of the wefts may be a polytrimethylene terephthalate multifilament yarn.

Generally, weaving a synthetic fiber multifilament yarn in an air jet loom has poor flight performance of the weft, and is disadvantageous in both weaving and weaving properties and the quality of weaving by a water jet loom. Yes, the effects of the present invention are unexpected.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to embodiments. The production of the polytrimethylene terephthalate multifilament yarn, yarn physical properties, the number of weft stoppages during weft weaving, and the evaluation of the quality and quality of the woven fabric are as follows. (A) Method for producing polytrimethylene terephthalate multifilament yarn Polytrimethylene terephthalate having ηsp / c = 0.8 was obtained at a spinning temperature of 265 ° C. and a spinning speed of 1200 m / min to obtain an undrawn yarn. Hot plate temperature 140 ° C, stretching ratio 3 times, stretching speed 800m /
And a 50d / 36f drawn yarn was obtained. The strength and elongation of the drawn yarn, elastic modulus and elastic recovery at 10% elongation are as follows:
They were 3.2 g / d, 46%, 30 g / d and 98%, respectively. (B) Elastic recovery at 10% elongation An initial load of 0.01 g / d was applied to the sample, and the sample was stretched at a constant rate of 20% elongation per minute. At the same rate to draw a stress-strain curve. The following equation was used to calculate the residual elongation (L) when the stress was reduced to 0.01 g / d, which is equal to the initial load, during shrinkage.

Elastic recovery rate at 10% elongation = (10−L) / 10 × 100 (%) (c) Number of weft stoppages The number of weft stoppages of the loom during operation of the loom is
The evaluation was made by converting the data per one web . Nukiin number of stoppages (times /
(Biki) within 1 is considered good. (D) Weaving the woven fabric on a woven fabric inspection machine, and ranking the degree of occurrence of sink marks having different gloss or different forms on the weft of the woven fabric based on the following five-level evaluation criteria, and ranking the average value by five people It was expressed by. When the quality of the fabric is in the range of W0 to W1, the quality of the fabric is good.

W0: good with no sink mark defects W1: good with slight sink mark defects but good woven quality W2: bad with sink mark defects W3: noticeable sink mark defects W4: The occurrence of sink mark defects is remarkably inconspicuous. (E) Fabric quality The fabric is run on an inspection machine, and the frequency of weft defect occurrence of the fabric is ranked by five persons based on the following five-level evaluation criteria. And expressed by the average value. When the quality of the woven fabric is in the range of W0 to W1, the woven fabric has good quality.

W0: good with no occurrence of latitudinal defects W1: good with slight occurrence of latitudinal defects but good woven fabric W2: bad with occurrence of latitudinal defects W3: with latitudinal defects W4: The occurrence of the latitudinal defect is extremely inconspicuous.

[0027]

Examples 1 to 3 and Comparative Examples 1 to 6 Using the polytrimethylene terephthalate multifilament yarn obtained by the above method, the following treatments and weaving were carried out under the conditions shown in Table 1. A 50 denier / 36 filament polytrimethylene terephthalate multifilament yarn is entangled using an air entanglement nozzle before being wound on a weft yarn feeder, and is substantially non-twisted with an entanglement number of 7 yarns / m. Was obtained. Using the obtained yarn as a weft, changing the loom used to an air jet loom, a water jet loom, a shuttle loom, and changing the loom rotation speed by an inverter ,
A weaving test of the following woven fabric was performed. (1) Woven fabric: warp, glued yarn of polytrimethylene terephthalate multifilament yarn 50d / 24f: weft, polytrimethylene terephthalate multifilament yarn 50d / 36f 31.5 yarns / cm Tissue plain weave (2) Loom: Air jet loom (AJL) (Examples 1 to 3) ZA-103 (150 cm, manufactured by Tsudakoma Kogyo Co., Ltd.)
Width) water jet loom (WJL) (Comparative Example 1 to Comparative
Example 3) ZW-303 (150 cm, manufactured by Tsudakoma Kogyo Co., Ltd.)
Width) Shuttle loom (Comparative Example 4 to Comparative Example 6) Product name KSL-200 (130c) manufactured by Enshu Seisakusho Co., Ltd.
(m width) (3) Width: Air jet loom 133cm Water jet loom 133cm Shuttle loom 120cm (4) Weaving days: Air jet loom 20 days Water jet loom 20 days Shuttle loom 5 days (5) Reed: Air jet loom 72 wings / whale size (2 wings / wings), 1500 mm in total length, 0.23 mm in wing thickness 10 degree maxillary angle, 6 degree lower jaw angle, 0 degree bottom edge The circumference of the reed wing is rounded. Water jet room 72 birds / whale Dimensions (2 pcs / wings), 1500 mm in total length, 0.23 mm wing thickness Shuttle loom 72 wings / whale size (2 pcs / wings), 1300 mm in total length, 0.23 mm wing thickness Table 1 shows polytrimethylene terephthalate multi The weaving test using the filament yarn 50d / 36f as the weft and the evaluation results are shown. From Table 1, it can be seen that weaving the polytrimethylene terephthalate multifilament yarn in the air jet loom reduces the number of weft stoppages and provides an excellent fabric quality and fabric quality.

[0028]

[Table 1]

[0029]

According to the method for producing a woven fabric of the present invention, weaving efficiency is improved, and a woven fabric having excellent quality and quality can be obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a general weft insertion method of an air jet loom.

FIG. 2 is an explanatory view schematically showing a positional relationship between a warp and an air injection port of an auxiliary nozzle.

[Description of Signs] 1 Weft 2 Storage drum 3 Deformed reed 4 Yarn guide hole 5 Main nozzle 6 Auxiliary nozzle 7 Warp 8 Air injection port 9 Deformed reed wing

Continuation of front page (56) References JP-A-57-193534 (JP, A) JP-A-5-171589 (JP, A) JP-A-4-24242 (JP, A) JP-A-7-238438 (JP) JP-A-6-212525 (JP, A) JP-A-8-209443 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) D03D 1/00-27/18

Claims (1)

(57) [Claims] 1. The number of entanglements of at least 4 wefts / m
When weaving using polytrimethylene terephthalate multifilament yarn of 8 / m or less , weft yarn is stored.
A method for producing a woven fabric, characterized in that the weaving is performed by an air jet loom whose drum portion is a pin type .