JPH03167335A - Rayon fasciated spun yarn and rayon/wool fasciated spun yarn by air false twisting method - Google Patents

Abstract

PURPOSE:To obtain fasciated spun yarn having crispiness imparted to pliancy with drapeability of rayon fiber and feel of woolen fiber by spinning a fiber bundle of respective rayon fiber or further with woolen fiber using an air false twisting type spinning apparatus. CONSTITUTION:Fasciated spun yarn (Y) of rayon or rayon and wool sufficiently obtained by forming a fiber bundle 2 of the rayon fiber having <=200mm maximum fiber length, >=55mm average fiber length and <=5 denier single filament size or mixed fiber composed of 20-80wt.% aforementioned rayon fiber and 80-20wt.% woolen fiber having 140-240mm maximum fiber length and >=55mm average fiber length into the shape of a fleece using a drafting mechanism composed of a back roller pair 3, a middle roller pair 5 and a front roller pair 6 and false twist spinning the resultant fleece with air jet nozzles 7 and 9.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a fiber bundle of rayon fibers. Or rayon fiber and normal wool fiber. Alternatively, the present invention relates to a bundled spun yarn obtained by feeding a fiber bundle obtained by blending rayon fibers and wool fibers obtained by removing scale on the fiber surface except for a specific proportion to an air false-twisting type spinning device.

(Prior art) After the roving is drafted into a fleece by a drafting device,
This is introduced into an air false twisting device to give a false twist, and while false twisting is applied to the short fiber bundle located in the center, a group of fibers having substantially free ends around the fiber bundle is created. The technology in which the outer unrestricted fibers are wound around the central fiber bundle during untwisting to form a spun yarn is called the air false-twist spinning method, and is an innovative spinning method that replaces the ring spinning method. Recently, it has been attracting attention as one of the methods, and many inventions and ideas related to this have been disclosed in many documents including Japanese Patent Publication No. 56-31370. To specifically explain the structure of the bundled spun yarn obtained by the air false twist spinning method, as described in the above publication, a part of the stable fiber bundle is In8II! The fiber exists with one end locked to the inner N part of the thread main body and the other end wrapped around the outer layer part of the thread main body, and each winding is 41JJ.
Each fiber is oriented in a fixed direction along the length of the thread. Therefore, when the thread is squeezed, the thread surface feels rough in one direction and smooth in the other direction. Compared to other innovative spinning yarns, this yarn has properties that are relatively similar to yarns obtained by conventional ring spinning, and it is easy to spin as coated yarn or composite yarn (Tokuko Showa). 59-7912), and the center of the yarn is essentially untwisted, filling the voids, and has good permeability to processing liquid II, so it can be applied to spinning various fibers. A lot of research is being carried out to solve this problem. (I!I problem that the invention aims to solve) The "Murata J/Tospinner" by Murata Machinery Co., Ltd. is a Jitsukawa machine for carrying out the air false twist spinning method. ”
(abbreviated as MJS) is currently on the market, but this was developed mainly for cotton fibers with a relatively short fiber length, and it is not suitable for spinning yarn containing long fibers, which is the object of the present invention. There are still many problems that need to be resolved. In other words, rayon and wool fibers for long fiber spinning are 10mm long.
Since MJS is composed of fibers with fiber lengths distributed over a wide range from 250mm to 250mm, MJS, which was developed for cotton fibers with short fiber lengths and relatively high uniformity, has a rayon fiber bundle and a wool fiber bundle. Even if you use it as is, you cannot expect good spinning conditions and yarn properties. As an expedient method, a method has been proposed in which these fibers are cut to resemble the fiber length distribution of cotton fibers and then spun, but this naturally impairs the appearance and texture unique to long fiber spun yarn. I don't like it. In addition, rayon fiber is produced using the ring spinning method. Alternatively, when yarn is made from a blend of rayon fiber and wool fiber, in order to reduce the occurrence of yarn unevenness, the maximum draft magnification is around 25 times. Therefore, in order to spin fine-count worsted yarn, it is necessary to reduce the weight of the yarn per unit length of the supplied roving. However, in this case, since the rayon fiber lacks conjugation, in the method of creating a roving ball by false twisting the bobbiner of the front spinning machine, the strength of the yarn is small and the roving will break when fed to the ring spinning machine. ．． If there is a problem with the strength when feeding with an in-line yarn ball, there is a method of feeding the braided yarn from a can, but if thin roving yarn is stored in a can, it cannot be taken out smoothly and the braided yarn may break. When a cohesive oil is used to increase the strength of the roving, the surface of rayon fibers is smooth and has low hygroscopicity, so even a small amount of slug agent causes the fibers to stick, causing yarn unevenness. There is an occurrence of NEP. Therefore, it is not possible to make high-quality, fine-count spinning by increasing the buncage of the roving ball. In addition, in the method of actual twisting using an English-style fryer, rayon fibers lack foaming properties and have a high specific gravity, so the centrifugal force caused by the rotation of the fryer increases the generation of wings. The present invention eliminates these drawbacks, allows production by maintaining a good spinning condition using the air false-twisting method, and maintains the cool drape and suppleness inherent to rayon fibers. A bundled spun yarn of rayon fibers with a unique supple feel created by the spinning method, while maintaining the cool drape and suppleness inherent to rayon fibers, with the texture of wool fibers added, and without the unique air twisting method. The purpose of this invention is to provide a bound spun yarn that is a blend of rayon #a male and wool fibers and has a feeling of elasticity.
(!!i! Means for Solving the Problem) In order to achieve the above object, the present invention has the following features. Namely, the first invention is an air false twisting method for fiber bundles of rayon fibers. A yarn made by feeding and spinning rayon fibers into a spinning device, with a maximum fiber length of 200 mm or less, an average fiber length of 55 mm or more by barbé method, and a single fiber fineness of 5
denier or less, and the second invention is a yarn produced by feeding a mixed fiber bundle consisting of rayon fiber and wool fiber into an air false-twisting type spinning device and spinning it, the yarn comprising the mixed fiber 20~20~ of rayon fibers are added to the total amount of the bundle.
The rayon fiber contains 80% by weight, and the maximum fiber length is 200 mm or less, the average fiber length by barbé method is 55 mm or more, and the weave of the single fiber is 5 denier or less, while the above-mentioned wool fiber has a maximum compact fiber length of 140~
240 mm, average fiber length by barbé method is 55 m
m or more, and the third invention is a mixture l&! of rayon fiber and wool fiber. 1 fiber bundle is supplied to an air false-twisting type spinning device and spun, and the mixed fiber bundle contains 20 to 8 rayon fibers based on the total amount.
This rayon fiber has a maximum fiber length of 200 mm or less, an average fiber length measured by the barbé method of 55 mm or more, and a single fiber fineness of 5 denier or less; The maximum fiber length of wool fiber is 1
40-240mm, average fiber length by barbé method is 55m
m or more, and part of the fiber surface scale is removed leaving a specific proportion. As is well known, the spun yarn obtained by the air false twisting type silk spinning machine has one end of the single fiber of the staple fiber bundle in the inner layer of the raw yarn, and the other end of the fiber exits the outer layer of the raw yarn. 1 for the actual letter! The array of single fibers with i and 1 each have the same arrangement direction, and the produced yarn with the above-mentioned cross structure has a rough yarn surface in one direction and a roughness in the other direction in relation to the ironing direction of the yarn surface. has the property of being smooth. Therefore, in order to obtain the bound spun yarn of the present invention, rayon fibers having a specific fiber length and/or specific fineness, or rayon fibers and wool fibers having a specific fiber length and/or specific fineness are used. The spun yarn of the present invention cannot be produced simply by combining them in a predetermined ratio and placing them in an air false-twisting spinning device. As will be described later, by using a hollow roller as a drafting means when setting up an air false-twisting spinning device, high-quality yarn can be effectively spun without damaging rayon fibers and wool fibers, which have long fiber lengths. This made it possible for them to do so. In the present invention, when rayon fibers and wool fibers are blended, the weight of the rayon fibers contained in the mixed fiber bundle relative to the total fiber amount is required to be 20 to 80% by weight.
If the amount of rayon fiber exceeds 80% by weight of the total fiber amount, the bulkiness and texture of wool fibers will be lost, and if it becomes less than 20% by weight, the cool drapability and suppleness of rayon will decrease. In addition to the so-called standard regular type, the rayon fiber used in the present invention may be one that has l;t added value, for example, to make it difficult to twist, or a special type that has hygroscopicity. , each is selected according to its use and purpose. Leh: 3 staples are continuous length I! One method is to cut tow consisting of fiber bundles into a sliver shape using a tension cutting device such as a tow reactor, and the other method is to cut a tow consisting of fiber bundles into a sliver shape using a tension cutting device such as a tow reactor, or to create a sliver from a staple that has been pre-canted to a fixed length or bias through a carding process. Either can be adopted. The fiber length distribution is such that the maximum fiber length is in the range of 150 to 240 mm, and the JI
The average fiber length determined by the barbé method of the top analyzer specified in S L 1083-1971 must be 55 mm or more, and in the present invention, it is possible to maintain a good spinning condition if the average fiber length is 55 mm or more. be. In particular, the weave must be as thin as 5 deniers or less; if the fibers are thicker than this, the number of constituent fibers in the spun yarn will be too small and the strength of the yarn will be insufficient. In addition, wool mm is a worsted spinning fiber, that is, a maximum fiber length of 14 mm.
It is important that the yarn has an oar fiber length distribution of 0 to 240 mm and an average fiber length of 55 mm or more.For fibers shorter than this, such as fibers for worsted spinning, the strength and quality of the yarn obtained is significantly higher. It is not desirable because it is inferior and the spinning condition also worsens. Either this wool glue fiber is formed into a sliver through a known normal process, or it is shaped into a sliver through a known normal process and is supplied in an open state from the front roller of a drafting device to an air false-twisting spinning device. Before being spun, that is, after forming a sliver and before spinning, it is preshrink-proofed using a chlorinated resin method, etc., and the scale of the surface fibers is removed, leaving a certain proportion. The specific means for this shrink-proofing process is as follows:
In addition to Publication No. 69, the applicant previously published JP-A-63-19
There is a method proposed in Publication No. 6767, for example, in which a sliver of wool fiber is sprayed with an aqueous solution containing active chlorine, and this is introduced into a U-shaped tube filled with water. The chlorinated resin method, in which scale is removed by chlorinating only the fiber surface using capillary action and hydrostatic pressure while the fiber is immersed in a nearly vertical state, is extremely effective at 4T. In this case, the scale on the surface of the wool fiber is completely removed, and the surface of the fiber itself becomes extremely smooth, so although it becomes more glossy, it does not reach the level of giving it a deep luster like a string. It is preferable that a certain percentage of Then, the rayon fiber sliver is put into a pre-spinning machine and formed into roving yarn. On the other hand, the rayon fiber sliver and the wool fiber sliver are simultaneously subjected to the pre-spinning process (13), blended and formed into braided yarn, and then supplied to an air false twisting spinning device. The single yarn obtained by feeding and spinning into an air false twisting spinning device is subjected to medium twisting by combining several collars by a known method, and then a plurality of these medium twisting yarns are combined and ply-twisted. Or, by directly twisting multiple yarns together, it can be made into worsted yarn, hand-knitted yarn, etc. of the desired thickness. In this case, the combined number of wires is preferably about 2 to 20, and the overall number is preferably about 1 to 40 meters. The worsted yarn and hand-knitted yarn manufactured as described above have the cool drape and suppleness inherent to rayon fibers,
The soft feeling obtained by air false twist spinning is added, and the yarn made by blending rayon fiber and wool mm adds the soft feeling obtained by air false twist spinning to the texture of rayon and the bulkiness inherent to wool. It has a unique texture that has never been seen before. In addition, when using wool fibers that have been preshrunk,
It also adds a silky appearance. The production of yarn according to the present invention will be explained based on preferred examples shown in the drawings. As shown in FIG. 1, a rayon fiber bundle having the above-mentioned structure is drawn out from a can (1). Alternatively, a roving (2) made of a blended fiber bundle of rayon and wool is passed through a pair of bank rollers (3).
The first air injection nozzle (7) is made by passing it through a draft structure consisting of a pair of ξ dollar rollers (5) equipped with an apron (4) and a pair of front rollers (6) in order to form a fleece. , untwisting pipe (8), second air injection nozzle (9)
．． The single yarn Y having the above-mentioned unique structure is formed through a pull-out roller (10) and wound up as a package (11). In order to obtain the yarn of the present invention, 1'! A horizontal ψ removal roller 03) as shown in Fig. 3 is attached to the top roller of the middle roller pair (5) of the 1' raft mechanism (12) shown in Fig. 2.
specially adopted, specific length of rayon fiber and wool ILI
We are working hard to ensure a smooth draft with m. This hollow roller (l3) has a small diameter in the center area of the outer peripheral surface, so that the hollow part (l3) has an appropriate depth (
14) is in full force. The depth of the hollow part (l4) is selected depending on the count of the roving to be supplied, and it is desirable to make it deeper for thick rovings. For example, when the weight of the roving is 0.4 to 2 .0 g/m, 0.4 to 0.0 g/m.
Approximately 8 mm is appropriate.

The function of this hollow roller (l3) is that if there are fibers in the yarn that are longer than the roller gauge set in the draft Ia structure (such a case will occur in the sliver prepared with the tension cutting device). However, the purpose is to control this so that it does not cut it during drafting and does not disturb the drafting of other fiber groups. (Function) The thread according to the present invention has a length of from around 10 mm to a maximum of 250 m.
The raw wool, which has a dense fiber length distribution reaching around m, is blended into the yarn without being perforated, so the unique texture of rayon and wool is not impaired. In addition, since the yarn is not ring-spun yarn but is obtained using an air pre-fueled spinning device, the rayon fibers and wool fibers mixed in the previous spinning process are further mixed through air flow in the spinning process. The interaction between the two is extremely good. Hereinafter, specific examples of the spun yarn of the present invention will be further explained. (Example 1) A staple obtained by bias cutting rayon 2.5 denier tow with an average length of 76 mm is cut into a workpiece L by force.
The sliver obtained by J. l in the pre-spinning process. Made with 08 meter count roving. This was passed through MJS1a having the configuration shown in Figure 1 to produce a bound spun yarn with a count of 54 meters. In addition, in the device used, the depth of the groove of the hollow roller shown in FIGS. 2 and 3 is 0. 6 m
It was set as m. In addition, the roller gauge of the draft device was set to 103 mm between the front roller and middle roller, and 107 mm between the ξ dollar roller and back roller, increasing the total draft by 50 times. In order to compare the resulting bundled spun yarn of the present invention with a count of 54 meters, a spun yarn with a count of 54 meters was produced from the rayon sliver using the ring spinning method. Two of each of these two types of threads were combined.The table shows the strength and strength of the threads according to JIS L1095.
7.5 Single yarn elongation strength and elongation rate (with constant speed tension type tester,
Grip distance 111f50cm, pulling speed 30cm/mi
n) bond, U%, Thin (-50%), Tbl
ck (+50%). Neps (+200%) is JIS
．． L 10957.20 Thread unevenness method A. This was measured using method B. From Table 1, it can be seen that the bound spun yarn of the present invention is not much different in physical properties from the spun yarn obtained from the conventional ring tree spinning machine, and does not cause any problems in actual production. (Example 2) Cutting rayon 1.5 denier tow by draft
Average fiber length 83 mm obtained using one-way tow reactor, Q
65% rayon fiber sliver with a large fiber length of 190 mm and an average fiber diameter of 2
A 0.5μ wool rut fiber sliver was blended at 351jl% to obtain a Ne II yarn with a count of 1.52m. This was placed in MJSli under the same conditions as in Example 1 to produce a 76 meter count Kito spun yarn. In order to compare the resulting bundled spun yarn of the present invention with a count of 76 meters, the rayon fiber sliver and the wool fiber sliver were blended at the same weight ratio and a spun yarn with a count of 76 meters was produced by a ring spinning method. Two of each of these two types of yarn are used in Table 2. Although the bound spun yarn of the present invention is slightly inferior in physical properties to the spun yarn obtained from a conventional ring tree spinning machine, it does not cause any practical problems. It turns out that. (Example 3) Rayon 1. The average fiber length was 83 mm, which was obtained by cutting a 5-denier tow using a draft (one-way tow reactor).
65% by weight of rayon fiber sliver with a maximum fiber length of 190 mm and an average fiber diameter of 20 mm produced by known conventional methods.
．． A wool fiber sliver with a thickness of 3 μm is subjected to anti-shrunk processing using a chlorinated resin method, and a wool fiber sliver obtained by removing scale on the fiber surface except for a specific proportion is blended at 35 weight percent.1.
I obtained braided yarn with a count of 52 meters. This was set in an MJS machine with the same thread f'l'' as in Example 1, and a bound spun yarn with a count of 76 meters was produced. {:} In order to compare the bound spun yarn of the present invention with a count of 76 meters, the rayon fiber sliver and the wool fiber sliver were mixed at the same weight ratio, and a spun yarn with a count of 76 meters was produced by the ring spinning method. did. Table 3 shows that the bound spun yarn of the present invention has physical properties slightly inferior to the spun yarn obtained from a conventional ring spinning machine, but does not cause any practical problems. It turns out that. Also, n)i
Because it uses wool that has undergone 1II processing, its luster has a silk-like shine. (Effects of the Invention) As mentioned above, the present invention solves the problem of the air false twist spinning method in that relatively long fibers such as rayon and wool fibers for long fiber spinning cannot be used as they are. It is a strong yarn that is necessary for spinning yarn. This makes it possible to obtain a degree of symmetry. In addition, blended yarn containing rayon fiber (contains 100% rayon fiber)
This solves the problem that when spinning by the ring tn spinning method, it is not possible to make the yarn fed to the box spinning machine thinner, which naturally limits the draft rate.The product obtained by the present invention consists of By fully maintaining the original texture and characteristics of rayon fiber wool 8a!1, and adding the unique supple feel obtained by air false twist spinning, it has a unique texture that has never been seen before.Also, the present invention When a woven fabric is manufactured using yarn, the binding fibers control the movement between the Ili fibers, thereby increasing the slipping resistance and producing a stable and durable woven fabric. It is expected to have a remarkable effect not only in promoting the legalization of law, but also in terms of its retrospection.

[Brief explanation of the drawing]

FIG. 1 is a side view schematically showing an air false twisting type spinning device used to produce the bound spun yarn of the present invention, and FIG.
FIG. 3 is a perspective view showing the main parts of the device shown in the figure, and FIG. 3 is a plan view showing the shape of the hollow roller. (1)... Kens,
(2>... roving, (3)... batho roller pair, (4)... apron, (5)... middle roller pair, (6)... front roller pair, (7)... ...first air injection nozzle, (8)...defibration tube, (9)...second air injection nozzle, (10)...pull-out roller, (11)...pan cage, (l2) ...Draft mechanism, (l3>・
... hollow roller, (14) ... hollow section. Condolence 1 Figure 5 Bamboo 2 Illustration procedure amendment (voluntary) 1. Display of the incident Heikai 1 year patent application No. 303651 2. Title of the invention Rayon bound spun yarn and rayon/wool bound spun yarn by air false twisting method 3. Relationship with the case of the person making the amendment

Claims (3)

[Claims] (1) A yarn made by feeding fiber bundles of rayon fibers to an air false-twisting type spinning device and spinning them, the rayon fibers having a maximum fiber length of 200 mm or less and an average fiber length of 55 mm by barbé method.
A bound spun yarn of rayon, characterized in that the fineness of the single fibers is 5 denier or less. (2) A yarn produced by feeding a mixed fiber bundle consisting of rayon fibers and wool fibers to an air false-twisting type spinning device and spinning it,
The mixed fiber bundle contains 20 rayon fibers based on its total amount.
The rayon fiber has a maximum fiber length of 200 mm or less, an average fiber length by barbé method of 55 mm or more, and a single fiber fineness of 5 denier or less; Maximum fiber length is 140
~240mm. A bound spun yarn made of rayon and wool, characterized by an average fiber length of 55 mm or more determined by the barbé method. (3) A yarn produced by feeding a mixed fiber bundle consisting of rayon fibers and wool fibers to an air false-twisting type spinning device and spinning it,
The mixed fiber bundle contains 20 rayon fibers based on its total amount.
The rayon fiber has a maximum fiber length of 200 mm or less, an average fiber length by barbé method of 55 mm or more, and a single fiber fineness of 5 denier or less; Maximum fiber length is 140
- 240 mm, the average fiber length by barbé method is 55 mm or more, and a part of the wool fiber has scale removed from the fiber surface leaving a specific proportion. .