JPS6045629A - Warp yarn preparing method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a warp preparation method that streamlines the sizing process commonly performed when producing woven or knitted fabrics.

The main purpose of the conventional sizing treatment is to improve the yarn's cohesiveness, fluffiness, and strong retention, and for this purpose, starch, I'VA, or acrylic crystalline molecular substances are added to the yarn. Adjusting the size liquid alone or in combination, dipping the yarn, squeezing it, dry-rolling it to make a sizing yarn, and rsthing the sizing yarn as a warp, the eight movements of the loom, namely shedding movement and reeding, are performed. You can exercise smoothly.

As described above, the sizing process occupies a very important position in the manufacturing process of woven or knitted products, but on the other hand, the cost is also large, for example, accounting for about 50% of the cost of weaving textiles. Therefore, it is very meaningful to be able to omit the sizing process from the viewpoint of process omission and cost rationalization.

The present invention eliminates the conventional sizing process using large-scale equipment, mixes water-soluble fibers into warp yarns by blending, etc., and gelatinizes the water-soluble fibers in the warping process to create yarn. It is made by slightly adhering the constituent fibers and suppressing the fluffy fibers on the surface to achieve the same effect as the sizing-treated yarn.
The warp preparation method is characterized in that a yarn mixed with 0% by weight is continuously subjected to moist heat treatment in a warping step to gelatinize the water-soluble fibers, and then wound up after drying.

First, in the present invention, commonly known water-soluble polyvinyl alcohol-/'-based ma and water-soluble polyamide-based mH1 water-soluble alginic acid fibers can be used as water-soluble fibers, but polyvinyl alcohol fibers are particularly spinnable. , is effective and has excellent adhesion after gelatinization. These water-soluble fibers have a melting temperature of 40% from the viewpoint of yarn shape stability and spinnability.
The melting temperature is preferably 90° C. or higher for ease of dissolution and removal after knitting or weaving.

Torera's water-soluble fibers are cotton, which is used in ordinary knitted fabrics,
It is blended with main fibers such as wool, polyester/l/k 41M, and polyacrylonitrile fibers, but
In particular, in order to distribute more of the water-soluble fibers on the surface of the yarn during blending and enhance the adhesive effect when gelatinized, the thickness of the fibers is preferably 50 to 100% thicker than the main fibers,
It is effective to make the fiber length υ10-30% shorter than that of the main fiber.

The mixing ratio of water-soluble fibers to the yarn is preferably 1 to 20 M%; if it is less than 1% by weight, the adhesion between the biofibers after gelatinization is small, and the binding force of the yarn cannot be obtained, resulting in a 20-fold foot shape. If it exceeds this value, it becomes more difficult to dissolve and remove the final gelatinized water-soluble fiber, the twist changes, and the thread count becomes finer than necessary, which is not desirable. The preferred mixing ratio of water-soluble fibers is 5.
~10% by weight. This mixing ratio depends on the type of main fiber,
It is selected within the above range as appropriate depending on the thickness of the yarn.

In the present invention, the yarn mixed with such water-soluble fibers is wound onto a rough winding beam as a warp, or during the warping process in which several rough winding beams are beamed into one beam. The yarn group is subjected to moist heat treatment during continuous running to gelatinize the water-soluble fibers, and after drying, the fibers are rolled up to form warp threads with the same cohesiveness as glued ones for knitting and weaving.

The heat treatment for gelatinization of the water-soluble fibers can be carried out by running the threads in a steamer and treating them with steam, by attaching water to the threads and heating them directly or indirectly, or by heating the threads directly or indirectly. This can be done by passing it through hot water. Among these, an effective means for the thermal treatment of the present invention is a method of heating the yarn to which water is attached using a high-frequency heating machine. This method makes use of the heat generated by water, and water must be attached to the yarn during high-frequency heating for a short period of time, which is necessary for the water-soluble R fibers to gelatinize. ,
For this purpose, it is necessary to sufficiently impregnate the yarn with water and to maintain the inside of the high-frequency heating machine in a saturated steam atmosphere in order to suppress the evaporation of moisture in the yarn inside the high-frequency heating machine. In this treatment, water-soluble fibers can be gelatinized in an extremely short time, and the equipment is smaller (compared to steam treatment, etc.), so it can be easily incorporated into the warping process.

In addition, in conventional sizing, smoothing agents, antistatic agents, preservatives, etc. are generally mixed into the size liquid, and when such processing agents are used in conjunction with the present invention, the above-mentioned water adhesion prevention It is possible to mix each of the above-mentioned processing agents into the water, and when the water adhesion treatment is not used (for example, steaming), the processing agents should be mixed into the water-soluble fibers. I can do it.

In the present invention, after the water-soluble fibers are gelatinized as described above, they are dried and rolled up onto a beam, and a commonly known dryer can be used as the dryer. In particular, high frequency dryers can dry in an extremely short time. Note that when high-frequency heating is used to gelatinize water-soluble fibers, drying can be completed by slightly controlling the processing time, so a special dryer is not required in this case.

As mentioned in section 1 below, according to the present invention, by mixing water-soluble fibers with threads and 1- and easily gelatinizing the fibers,
It becomes possible to omit the conventional sizing process using large-scale equipment, and it is possible to efficiently prepare warp yarns for knitting and weaving having bundling properties similar to those of glued yarns. Note that the gelatinized water-soluble fibers can be easily removed in the scouring and dyeing steps after knitting and weaving.

FIG. 1 shows an apparatus for carrying out the method of the present invention. In this apparatus, the yarn group 2 pulled out from the rough winding beam 1 is placed in a water tank 6 with a smoothing agent or the like as required. The yarn passes through water containing water, enters a high-frequency heater 4 maintained in a saturated steam atmosphere, where the water-soluble fibers in the yarn are gelatinized, and then passes through a high-frequency dryer 5, where it is dried and wound into a single layer. Of course, in this device, the entrances and exits of the high-frequency heater and dryer are electromagnetically sealed. In the figure, 7 is a mangle, and 8.9 is a high frequency generator. The residence time of the yarn in each high-frequency heater and dryer may be about 5 seconds. As described above, various parts of the apparatus employed in the present invention can be modified depending on the purpose, and therefore, only those shown in FIG. 1 are used.

The present invention will be explained below with reference to Examples.

Example 1 Ho IJ NTE/v65%, Ray 5 Fufufu 35% blend S
When spinning 50/1, water-soluble vinylon 2.5d×
40 guns were mixed at a weight ratio of 7%. In this case, Borikoninute/1/[Vi, Rayonsufuha 2.0 d X 51
It is a group. Using the above spun yarn, warp 78 wood/1nch
When weaving a 1/1 sheared fabric with 70 s wefts/1 nch, moist heat treatment was performed using a high-frequency heating machine in the warp beaming process. At this time, the following was used as an auxiliary agent, and high frequency treatment was performed in the front chamber (saturated steam) for 5 seconds and in the rear chamber (dry) for 5 seconds at 100% pickup.

As a result of IA weaving using the warp yarns prepared in this manner, the weaving was smooth, and when the obtained gray fabric was subjected to a normal desizing process, the water-soluble vinylon was completely removed.

Example 2 E') f-7-T /1' 1.5 d X 38
When spinning 045/1, a blend of 65% Wn and 35% cotton, water-soluble vinylon 2dX50. was mixed in at a weight ratio of 10%.

When weaving a 1-ha poplin fabric of 110 warps/1nohs weft/1 nch using the above-mentioned spun yarn, heat treatment was performed using a high-frequency heating machine in the beaming process of the warp yarns. At this time, the following was used as an auxiliary agent and treated with high frequency front chamber (saturated steam) for 6 seconds and rear chamber (dry) for 6 seconds at pin up ioo%. 1. Weaving using the warp yarns prepared in this way. As a result, weaving went smoothly, and when the obtained gray fabric was subjected to a normal desizing process, the water-soluble vinylon was completely removed.

Example 6 Polyester/'1.3dX38m 100% C40/
When spinning No. 1, 9% by weight of water-soluble vinylon 2dX30m was mixed. Using the spun yarn, warp 10
When weaving a 1/1 Boblin fabric with 7 threads/1 nch and weft 84 threads/1 ndl, moist heat treatment was performed using a high-frequency heating machine during the warp beaming process. At this time, the following was used as an auxiliary agent, and high frequency treatment was performed in the front chamber (saturated steam) for 5 seconds and in the rear chamber (dry) for 5 seconds at 100% pickup.

As a result of weaving using the warp threads prepared in this manner, weaving was successful, and when the obtained gray fabric was subjected to a normal desizing process, the water-soluble vinylon was completely removed.

Example 4 50% of Polyf, Te) V C5d X 58rts,
When spinning a 50% cotton blend (350/1), 10% by weight of water-soluble vinylon 2.0dX30TNn was mixed.

Using the above spun yarn, warp 79/'1nch, weft 6
When weaving a 6 thread/1 nch 1/1 shatting fabric, the warp threads were squeezed through a hot water tank in the beaming process, and then left in a hot air dryer for 5 minutes to dry. At this time, use the following as an auxiliary agent in the hot water tank and pick up 80%.
And so.

As a result of weaving using the warp threads prepared in this way, the weaving was successful, and when the obtained gray fabric was subjected to a normal desizing process, the water-soluble vinylon was completely removed.

[Brief explanation of drawings]

FIG. 1 shows an example of an apparatus for carrying out the present invention. Patent applicant RiRa Shiyo Co., Ltd. Patent attorney Ken Kita

Claims (1)

[Scope of Claims] A yarn containing 1 to 20% by weight of water-soluble fibers is continuously treated with moist heat in a warping process to gelatinize the water-soluble fibers,
A warp preparation method characterized by winding up the warp after drying; Claim 1, characterized in that the water-soluble fibers are gelatinized by attaching water to the warp threads and then heating them.
Warp preparation method described in section. 3) The method for preparing warp yarns according to claim 2, which comprises gelatinizing the fibers by high-frequency heating in an atmosphere of saturated steam. The warp preparation method according to claim 1, characterized in that the water-soluble fibers are gelatinized by subjecting the yarns to a steam treatment. 5) The warp preparation method according to claims 1 to 4, wherein the water-soluble fiber has a melting temperature of 40 to 90°C. 6) The warp preparation method according to claims 1 to 4, wherein the water-soluble fiber is polyvinyl alcohol having a melting temperature of 40 to 9Q'C.