KR20100037290A - Process of producing wool/polylacticacid-fiber spun yarn - Google Patents

Abstract

PURPOSE: A manufacturing method of wool/polylactic acid fiber is provided to offer insulation, elasticity, heat-insulation properties with freshness and elegant luster by using environmentally friendly polylactic acid fiber. CONSTITUTION: A manufacturing method of wool/polylactic acid fiber comprises the following steps: preparing a process; carding wool fiber with a card sliver; gilling the card sliver with a drafting process; making polylactic acid fiber slivers by separately supplying the polylactic acid fiber into a carding machine; arranging the wool and polylactic acid fiber after removing monofiber; supplying the wool/polylactic acid fiber to a bobbin; twisting the wool/polylactic acid fiber; and manufacturing the wool/polylactic acid fiber into mixed spun yarns by twisting the fiber with a D/R ratio of 15 ~ 20.

Description

Process of Producing Wool / Polylactic acid-fiber Spun Yarn}

The present invention by mixing and spinning the polylactic acid fiber and wool fiber in a certain ratio wool / having the feeling of lightness and refreshing, which is the advantage of polylactic acid fiber, elegant gloss and wool fiber, such as luxury, warmth, hygroscopicity, elasticity, etc. It relates to a method for producing a polylactic acid fiber mixed yarn.

Poly Lactic Acid Fiber (hereinafter referred to as 'PLA fiber') is a fiber obtained through condensation reaction by dehydrating lactic acid obtained from fermented glucose from corn, etc., and melt spinning like synthetic fiber such as polyester or nylon. And through a commercialization process. This PLA fiber is a biodegradable fiber which can be defined as 'a fiber in which the chain introduced into the fiber by the microorganism is cut and inorganicized', and thus has the advantage of not causing any environmental problems even when disposed of.

The PLA fiber has a soft touch with excellent lightness and drape property, has a light refractive index and a low light reflectance, and has a merit of obtaining vivid colors, and its utilization as an environmentally friendly material has been attracting attention.

The current textile industry is not only a fashion-based apparel product, but technology development is intensifying toward well-being materials that have high functionality or human-friendly and environmental protection. In particular, we need to pay attention to biodegradable fibers that do not cause environmental problems even after they are discarded after use. There is a need to develop.

Yarn, which is spun with two kinds of materials, PLA fiber and wool fiber, is a combination of yarns that have not been tried until now, which complements each other's shortcomings and doubles the advantages to develop electricity that can develop a new emotion. Will be made. In particular, the general consumable spun yarn and its fabrics are expensive in terms of price and precautions in handling, but the development of PLA / wool blended spun yarn can solve this problem.

Therefore, the present invention provides a blended yarn blended with PLA fiber and wool fiber, which is an environmentally friendly fiber, on the basis of heightened interest in the environment and social environmental impact, the advantages of light and refreshing, elegant luster and wool fiber, which are advantages of polylactic acid fiber. By providing a blended yarn having a feeling of luxury, warmth, hygroscopicity, elasticity, etc., it is possible to have a rapid response to market requirements, and to provide a high value-added blended yarn product.

Therefore, according to the present invention, the filament wool 60-70 mm wool fiber is selected, and after washing, washing, drying, fastening, blending and oiling the preparation process, carding the finished wool fiber carding to make a card sliver Carding process, drafting process to make the wool tower by drafting the card sliver, carding process to make polylactic fiber fiber sliver by cutting poly polylactic fiber into length of 70 ~ 130mm and supplying to card, poly after carding Drawing process of doubling and drafting lactic fiber fiber into polylactic fiber fiber sliver, combing process of supplying the prepared wool top and polylactic fiber fiber sliver together with a commer to remove and align short fibers, and after the combing step Feed the wool / polylactic fiber bundle into the bobbin with rotation speed of 5,000 ~ 9,000 RPM and draft it at D / R ratio 10 ~ 15 After the front process, supply wool / polylactic fiber roving to ring spinning machine with rotation speed of 5,000 ~ 9,000 RPM, drafting at D / R ratio 15 ~ 20 while giving twist of 500 ~ 1,000T / M There is provided a method for producing wool / polylactic fiber mixed spun yarn comprising a process for producing a mixed spun yarn.

Hereinafter, the present invention will be described in more detail.

In the method of manufacturing the wool / polylactic fiber mixed spun yarn of the present invention, the wool / polylactic acid fiber is fed through the front and square process after the coaming process with the blender by supplying separately prepared wool sliver and polylactic fiber fiber sliver. It is to prepare a mixed yarn.

First of all, the hair is sorted and selected according to the quality of wool fiber 60 ~ 70㎜ in length, and the wool supplied in the mass is divided into tufts to remove large impurities. Wash with water to remove impurities. Thereafter, after washing the washed wool fibers using warm air, they are prepared by performing a fine spinning operation for removing other impurities inherent in the wool fibers and a blending operation for mixing the wool fibers to match the spinning lot, and applying oil for the post process. To be fair.

Subsequently, the carding process is performed to supply the finished wool to the carding machine to loosen and align the wool fibers and remove impurities to make the card sliver.

After the carding, a gilding process is performed to make a wool tower having a fineness of 20 to 30 g / m by doubling a plurality of slivers so that the fineness of the card sliver which is a fiber aggregate is uniform, and feeding and stretching them to a gill. In this case, the shape and color of the wool fibers can be mixed to meet the required specifications.

Meanwhile, the polylactic acid fiber is cut into 70-130 mm lengths and then fed to a carding machine to perform a carding process of making a polylactic acid fiber sliver. Polylactic acid fiber is prepared by making a short filament having a length of 70-130 mm by bias cutting the spun in the filament state. Since the polylactic acid fiber is a synthetic fiber and does not contain impurities such as wool or cotton fiber, it is not necessary to go through a preparation step such as open or fixed fiber.

After the carding, the polylactic fiber fiber sliver is doubling and drafted to perform a drawing process to produce a polylactic acid fiber sliver having a fineness of 20 to 30 g / m.

The wool top and polylactic acid fiber slivers prepared in this way are supplied together to a comber to perform a combing process of removing and aligning short fibers. In the coaming process, the wool tower and the polylactic acid fiber sliver are mixed, and at the same time, short fibers (noils) are removed and the fiber arrays are aligned to prepare high quality mixed spun yarn. The weight supply ratio of the wool tower and the polylactic acid fiber sliver to the coaming process is 50:50 ~ 30:70 is excellent in the gloss of mixed yarn, warm for winter, cool for summer, drape and elongation Becomes relatively excellent.

After the coaming process, if necessary, after drawing through the final softener to improve the uniformity of the sliver, the contents of the top state of the can are compressed into a bump top and sent to the next front process.

After the coaming process, the front process is performed to make the wool / polylactic fiber bundle irradiated, and the bobbin rotation speed is supplied to the front of 5,000 to 9,000 RPM while drafting at a D / R ratio of 10 to 15 while 500 to 1000 T / M The twist of gives a fineness of 0.2-0.3 g / m.

After the spinning process, the wool / polylactic acid fiber irradiation is supplied to the ring spinning machine, which uses the same ring spinning machine to change the setting. It is supplied to a ring spinning machine with a rotation speed of 5000 ~ 9000RPM, drafted at a D / R ratio of 15-20, and twisted at 500 ~ 1000T / M to produce wool / polylactic fiber mixed spun yarn with 55 ~ 65Nm fineness. As for the apron roller of the square process, the spacing between the back roller and the mid roller is 105 to 110 mm and the spacing between the mid roller and the front roller is 100 to 105 mm. . In addition, the twist of 500 ~ 1000T / M to improve the bonding strength of the wool fibers and polylactic acid fibers to maintain the strength of the final yarn to a certain level or more.

The wool / polylactic fiber mixed spun yarn obtained by the present invention has a white line on the cross-section and the wool having a scale on the surface and the polylactic acid fiber having a smooth cross-section on the surface are evenly mixed and with excellent bonding strength. You can see that they are coupled to each other.

By using the eco-friendly polylactic acid fiber in place of the polyester fiber according to the present invention has the lightness and refreshingness of the polylactic acid fiber, the elegant luster and the sense of luxury, warmth, hygroscopicity, elasticity, etc. It is possible to provide wool / polylactic fiber blended spun yarns with sufficient strength to be used for apparel.

The following examples are given as non-limiting examples of the method for producing the wool / polylactic fiber mixed spun yarn of the present invention.

Example 1

1. Preparation of Wool Fiber Slivers

After filamenting wool fibers with 60 ~ 70㎜ of fiber length, after washing, washing with water, drying, fastening, blending and oiling, carding wool fibers to make card slivers, and supplying the card slivers to the road The island was made of wool tower of 20g / m.

2. Preparation of polylactic acid fiber sliver

The polylactic acid fiber (Hubis acid) having a fineness of 2.5d was bias cut to a length of 80 ± 10 mm, and then carded to make a sliver, and the polylactic acid fiber scriber was drafted at a DR ratio of 10 to obtain a fineness of 20 g / m. Made of polylactic acid fiber slicer.

3. Coaming Process

The prepared wool top and the polylactic acid fiber sliver were fed together with a commer at a weight supply ratio of 50:50 to perform a combing process.

4. Forward process

After the front process, the wool / polylactic fiber bundle was fed to a spinning machine having a bobbin rotation speed of 7000 RPM, and drafted at a D / R ratio of 10 to make a wool / polylactic acid fiber having a fineness of 0.2 g / m.

5. Square process

The wool / polylactic acid fiber irradiation was fed to a ring spinning machine with a bobbin rotation speed of 6,000 RPM to give a twist of 720 T / M while drafting at a D / R ratio of 15 to prepare a wool / polylactic fiber mixed yarn having a fineness of 60 Nm.

6. Property evaluation.

The sinusoidal strength of the prepared spun yarn was 165.64 cN, and the elongation was 25%.

1 is a micrograph photographing the appearance of the mixed spun yarn of the present invention,

2 is a photomicrograph of a cross section of the mixed spun yarn of the present invention.

Claims (4)

Preparatory process of screening wool fiber with 60 ~ 70㎜ of fiber length, after opening, washing with water, drying, fine spinning, blending and applying oil, A carding process of making card slivers by carding the finished wool fibers;  Gilling process of drafting the card sliver into a wool tower, Carding process to cut polylactic fiber into 70 ~ 130㎜ length and supply it to carding machine to make polylactic fiber fiber sliver, Drawing process to make polylactic acid fiber slicing machine by doubling and drafting the polylactic acid fiber sliver after the carding; Coming process of supplying the prepared wool top and polylactic acid fiber sliver together with a commer to remove the short fibers and align, After the coaming process, the wool / polylactic fiber bundle is supplied to a bobbin with a rotational speed of 5,000 to 9,000 RPM and drafted at a D / R ratio of 10 to 15 while making the irradiation state, After the front process, supply wool / polylactic fiber roving to ring spinning machine with rotation speed of 5,000 ~ 9,000 RPM and draft with 500 ~ 1,000T / M while drawing D / R ratio of 15 ~ 20. A method for producing a wool / polylactic fiber mixed spun yarn, comprising the step of producing a spun yarn. The method of claim 1, wherein the apron roller of the spinning step, the spacing between the back roller and the mid roller is 105 ~ 110mm and the spacing between the mid roller and the front roller is 100 ~ 105mm Manufacturing method. The method of claim 1, wherein the weight feed ratio of the wool tower and the polylactic acid fiber sliver to be introduced into the coaming process is 50:50 ~ 30:70. The method of claim 1, wherein the front step is made of a fineness of 0.2 ~ 0.3g / m after the irradiation, the spinning process comprises a step of producing a wool / polylactic fiber mixed spun yarn of 55 ~ 65Nm fineness Method for preparing / blending polylactic acid fiber.

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