JPS623253B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a raw material roving for Kenkiri spinning and a method for producing the same. Conventionally, raw material roving for spinning has generally been an aggregate of short fibers. As a technique for obtaining a blended yarn having a two-layer structure among such rovings using short fibers, Japanese Patent Publication No. 43255/1987 proposes an invention for a roving having a two-layer structure. However, the conventional roving, which is an aggregate of short fibers, cannot meet the diversifying market demands, and the method described in the above-mentioned Japanese Patent Publication No. 52-43255 does not allow the short fibers that form the core to be used. The bundle is made of roving yarn, which must be made in advance, so that it is difficult to expect much improvement in productivity. Furthermore, roving made only of short fibers has various problems in terms of productivity and quality, such as roving breakage during production, licking, and roving breakage during spinning. On the other hand, short fiber properties for making roving,
For example, it is well known that there are considerable restrictions such as the number of shrinkages, degree of shrinkage, form of shrinkage, single fiber denier, and fiber length. The present invention has been made in view of the problems of conventional rovings, and its purpose is to make it possible to produce various types of spun yarn in a variety of ways, and to obtain the rovings by using the short fibers mentioned above. It is an object of the present invention to provide a novel roving for use as a raw material for kenkiri spinning, which is not subject to many restrictions in terms of properties, and a method for producing the same. In order to achieve this object, the present invention consists of the following configuration. That is, the roving for spinning raw material of the present invention comprises a filament component (hereinafter referred to as F component) which is one or a bundle of continuous filaments made of thermoplastic synthetic fibers or non-thermoplastic synthetic fibers, etc. A raw material roving for Ken-kiri spinning, characterized in that staple components (hereinafter referred to as S components), which are short fiber bundles made of artificial fibers or natural fibers, are continuously combined, and the spinning raw material of the present invention The method for producing roving yarn is to draft a sliver made of man-made fibers such as thermoplastic synthetic fibers or natural fibers between a cross roller and a front roller to the desired thickness. This is a method for producing raw material roving for kenkiri spinning, characterized in that one or a bundle of continuous filaments made of plastic synthetic fibers or the like is supplied from the front roller and then bundled. The present invention will be explained in more detail below. In obtaining the raw material roving for spinning of the present invention, the supplied continuous filament is preferably a monofilament or multifilament having substantially no twist or a very sweet twist near the producer's twist (producers' twist), or a monofilament or multifilament thereof. The single fiber denier, total denier, fiber cross-sectional shape, etc. that constitute the F component may be of any type. The F component is a single continuous fiber or a bundle having a strength that can be broken, and the material can be thermoplastic synthetic fibers or non-thermoplastic synthetic fibers, with or without shrinkage. can also be applied. Examples of the curled yarn include the curled yarn made by the addition-heat-setting-unraveling method, the temporary curled yarn by the temporary twisting method, the pressing method, the curled yarn by the shaping method such as gear, knit-denit, and structured curled yarn. Applicable. In particular, in temporary twisted yarn, the swirling property of the F component that occurs due to reheat-treated modified yarn or temporary twisting processing is eliminated, and the swirling property due to bottom twisting that normally occurs in spun yarn single yarn is eliminated. It can also be used for the purpose of reducing the amount of rotation, and it is preferable to use a device that has turning ability in the opposite direction to the turning ability caused by the downward twisting. In this case, in extreme cases, the twisting prevention set can be omitted, On the other hand, on the contrary, if an F component is used which has a swirling property in the same direction as the spinning property due to the downward twist of a single spun yarn, the swirling property of the resulting spun yarn will be extremely increased. This will be extremely useful as a tool. It goes without saying that we can also supply products that have been subjected to these latent treatments for shrinkage, and there is no problem even if the F component is pre-warmed. Further, the F component applied to the present invention may of course be one having a partial weakness in the axial direction or a yarn-dyed yarn. On the other hand, the S component is a short fiber component made of synthetic fibers, natural fibers, or a mixture thereof, and is determined by the material, blending ratio, single fiber denier composition, shrinkage characteristics (strength number, degree of shrinkage, shape of shrinkage, etc.), There are no particular restrictions on the cutting method or fiber length, and any fiber group that satisfies the ability to pass through the spinning process may be used. F component and S constituting the raw material roving for spinning of the present invention
The mixing ratio of the components is not particularly limited, but preferably F/S is 5 to 95/95 in weight percent.
5, most preferably 30-70/70-30
is within the range of Here, to describe the structure of the raw material roving for Ken-kiri spinning of the present invention, the most preferable method for converging the roving is to insert a real twist, but temporary convergence by alternating twist or rubbing may also be used. . In the case of inserting the actual yarn, a good two-layered roving can be obtained by appropriately setting the F component and the S component. S component when inserting and converging this real twist to obtain core-sheath two-layer roving,
The approximate relationship of the F component is shown in Table 1 below. By properly setting the items, etc., it is possible to exhibit a core-sheath structure.)

[Table] By changing the structure of the roving to a two-layer structure in this way, it becomes possible to obtain a two-layer structure even in the spun yarn. It is possible to improve quality properties such as hardness and abrasion resistance, as well as to produce unique effects that have not been seen before. Furthermore, as will be described later, a spun yarn uniformly blended using a two-layered roving can be obtained. The above-mentioned roving of the present invention is, for example, supplied to a draft part of a spinning machine having a cutting function, the F component constituting the roving is actively cut in the draft part, and then subjected to a process such as It is made into a spun yarn by converging it. Next, the general relationship between the characteristics of the two components forming the two-layered roving and the resulting spun yarn structure will be explained as follows. First, in order to obtain a spun yarn with a two-layer structure (core-sheath structure) favorably, it is sufficient if the two-layer structure roving satisfies at least one of the characteristic relationships shown in Table 2 below, and most preferably. should be satisfied with everything.

[Table] Furthermore, in order to obtain a uniformly blended spun yarn, it is almost sufficient if the two-layered roving satisfies at least one of the characteristic relationships shown in Table 3 below.
Most preferably, all of the requirements should be satisfied.

[Table] As described above, using the two-layered roving,
It is possible to appropriately obtain a spun yarn in a mixed state of two types. To describe the special effects of the raw material roving for spinning according to the present invention, F or S
This can be easily achieved by combining materials with different dyeing properties. Next, when using a F component that does not cause crimp or that eliminates crimp when cutting, this component has poor entanglement properties, resulting in long fluff on the surface of the spun yarn. It has an appearance similar to that of an animal hair mixture. When it comes to this animal hair mixture, the combination of stinging hair and downy hair is important, but in the present invention, among the F components, one with a thick single fiber denier is used for stinging hair, and on the other hand, one with a thick single fiber denier is used for downy hair. It is preferable to combine thin fibers, and the distribution to be generated can be easily achieved by considering the mixing ratio of the F and S components and the mixing ratio of the thick denier and fine denier fibers. Furthermore, if the hot water shrinkage rate of the S component is set to 0 or a small value, and the hot water shrinkage rate of the F component is combined with the hot water shrinkage rate of the material caused by the strain caused by cutting, it is possible to make a yarn with high bulk. It is. Below, the present invention will be explained in detail with reference to the drawings.
FIG. 1-A is a side view of the raw material roving for spinning 5 obtained by the present invention, and FIG. 1-B is a sectional view of FIG. 1-A.
Component 1 is placed in the core, and S component 2 is placed in the sheath. FIGS. 2A and 2B show spinning raw material rovings 5 having a structure opposite to that of FIGS. 1A and 1B. Both FIG. 1 and FIG. 2 show rovings with a two-layer structure, and the roving with this structure is particularly important in obtaining a spun yarn with at least a two-layer structure. Figure 3 - A is 1 of the resulting two-layered spun yarn 5'
An example side view, FIG. 3-B, is a sectional view of FIG. 3-A, in which the F component is arranged at the core and the S component is arranged at the sheath. FIGS. 4A and 4B show spun yarn 5' having a structure completely opposite to that of FIGS. 3A and 3B. Further, FIG. 5-A is a side view showing the appearance of the uniformly blended spun yarn 5'', and FIG. 5-B is a sectional view thereof.
This spun yarn differs from the above-mentioned spun yarn in that the F component and the S component are uniformly dispersed. The fact that the spun yarn can be obtained through the two steps of roving and spinning has the advantage of reducing costs by omitting steps compared to the conventional homogeneous blending method. FIG. 6 shows one embodiment for obtaining a spinning raw material roving 5 of the present invention in which the F component is in the core and the S component is in the sheath. Supply the S component (sliver) 2 to the draft part equipped with front rollers 4, 4',
The F component 1 is passed through the guide 6 so as to give the desired draft and overlap the fleece of the S component 2 which is discharged from the front rollers 4 and 4' via the collector guide 7.
The roving yarn 5 of the present invention is thus obtained. FIG. 7 is an enlarged view of the vicinity of the front roller in FIG. 6, showing a state in which the F component is wrapped in the S component. The raw material roving for spinning of the present invention is made by drafting a sliver made of artificial fibers such as thermoplastic synthetic fibers or natural fibers between the back roller and the front roller to a desired thickness, and short fiber fleece and thermoplastic fibers. It can be easily manufactured by supplying one or a bundle of continuous filaments made of synthetic fibers or non-thermoplastic synthetic fibers from the front roller, and then converging them. At this time, the degree of draft, the width of each component when superimposed, etc. may be determined as appropriate depending on the characteristics, structure, etc. of the desired roving, as described above. According to the present invention as described above, it is possible to produce various types of spun yarn with great diversity, and the roving breakage during roving production, which is caused by conventional roving made only of short fibers, There is almost no inconvenience such as licking or roving breakage, and short fiber properties,
In particular, the continuous filament yarn covers the properties of the short fibers to form a two-layer structure, so that the raw material roving for spinning is provided which is extremely useful industrially. Hereinafter, based on Examples, specific configurations of the present invention,
Explain the effects. Example 1 In the manner shown in Fig. 6, as the F component
Four 150D-48fil polyester temporarily twisted threads are combined to make a 600 denier thread, and the S component is 3D x 89 pill-resistant polyester with a hot water shrinkage rate of 0%.
Using mm, the rover uses the metric number Nm = 1/
4. A roving with a twist coefficient K=10 was created. The width when overlapping these two components is 2 mm for the F component and 12 mm for the S component.
mm, and a two-layered roving having an F component in the core and an S component in the sheath was obtained. The roving is fed into a draft part having a cutting function, and is drafted simultaneously with the S component while cutting the F component.Nm=1/
48, K=85 spun yarn was obtained. When the cross section of this spun yarn was observed by an optical method, it was found to be a two-layered spun yarn with the F component mainly in the core and the S component mainly in the sheath. This is the F and S that make up the roving.
The above structure is achieved due to differences in the characteristics of the components, ie, total denier and shrinkage. When the spun yarn obtained in Example 1 was subjected to hot water treatment at 90°C for 20 minutes, the material shrinkage and temporary shrinkage of the F component were fully expressed, resulting in a complete two-layer structure spun yarn, and This resulted in a spun yarn with a so-called coreless yarn structure, and rich in elasticity and bulk.
After double thread processing the spun yarn, a 2/2 Nanako fabric was produced, resulting in a worsted fabric with tension, elasticity, and volume that cannot be found in conventional fabrics made of 100% synthetic fibers. was completed. Example 2 As the F component, a yarn made by plucking six 150D-30fil polyester yarns (no crimp) was used, and as the S component, a 3D x 89 mm polyester staple (zigzag crimp) with a hot water shrinkage rate of 17% was used. in the rover
A two-layered roving with Nm=1/5 and K=12 was created. The ratio of F component to S component was 1:1. At this time, the width of the F component near the front roller of the rover was 3 mm, while the width of the S component was 17 mm. The obtained roving has an F component in the core and an S component in the sheath.The roving is fed into a draft part having a cutting function, and the F component is cut while the S component is simultaneously cut. Draft force Nm=1/
48, K=85 spun yarn was obtained. When the spun yarn was subjected to hot water treatment and observed in a cross-sectional photograph, it was found that the F and S components were well treated due to the differences in the characteristics of the crimping, single fiber denier, and hot water shrinkage rate of the F and S components constituting the roving. A spun yarn was obtained. Moreover, the yarn appearance was that of an animal hair blended spun yarn with F component straight fluff that was prominent. The spun yarn was knitted using a 4-neck puncher to obtain jersey, but the knitted fabric had an animal hair blend appearance and the straight fluff appeared on the surface of the knitted fabric. Example 3 Using six threads of 150D-48fil with anti-pilling properties (temporarily twisted yarn) as the F component and cotton as the S component, the fibers were knitted with a rover at 80 gels/15 yards and a number of twists of 0.4 T/inch. A roving was made with the F component as the core and the S component as the sheath. At this time, the fleece width of the S component was 13 mm, and the width of the F component was 3 mm. The roving is fed to a spinning machine with a cutting function, and the F component is converted to S.
While cutting the fiber so that it was longer than the fiber length of the component, a draft was applied at the same time as the S component to spin 30S (cotton count) and K=3.0. The obtained spun yarn is F
It is a spun yarn with a two-layer structure in which the component is arranged in the core part and the S component is arranged in the sheath part. When a jersey knitted fabric was made using the spun yarn, it was a knitted fabric that was excellent in water absorbency because it was a cotton blend, and was light and rich in volume because the knitted yarn was fully expressed. Example 4 Anti-pilling polyester 150D as F component
10 pieces of 48fil temporarily twisted yarn are combined, 50% polyester 3D x 89mm is used as the S component, and wool (merino)
Using a blended sliver made of 50% No. 64,
A two-layered roving with Nm=1/4.0 and K=11 was obtained. S
The width of the fleece component and F component when superimposed was 18 mm for the S component and 5 mm for the F component. The roving obtained here has a two-layer structure in which the F component is arranged in the core and the S component is arranged in the sheath. The roving is drafted simultaneously with the S component while actively cutting the F component using a spinning machine with a cutting function.Nm=
A spun yarn of 1/40 and K=80 was obtained. The spun yarn had a two-layer structure in which the F component formed the core and the S component formed the sheath. When the spun yarn was heat-treated, it became a so-called coreless spun yarn with excellent bulk and elasticity. When a woven fabric was made from the spun yarn using 2/2 twill, it had a soft feel mainly due to the effect of the wool present in large quantities on the surface of the yarn, and because the temporary curling was sufficiently developed, the fabric was rich in bulk. . Example 5 Temporarily twisted yarn having Z torque as F component
Using 4 yarns of 150D-48fil and a sliver of top-dyed wool (Merino) No. 64 as the S component, Nm = 1/4.0, K = 8, the core is the F component,
For the sheath part, a two-layered roving made of S component was prepared. The width of the fiber bundle when F component and S component are superimposed is 2 for F component.
mm, and the S component was 20 mm. Using the roving, a spinning machine having a cutting function cut off the F component and simultaneously drafted the S component to produce a spun yarn with Nm=1/52 and K=80. The obtained spun yarn becomes a uniform blended yarn, and the swirlability of the temporary twist yarn and the swirlability due to the lower twist (Z direction) during spinning are almost balanced, and the spun yarn can be processed without twisting and setting. When knitted into a cotton jersey, the fabric was knitted with less diagonal diagonal, and also had good bulk and elasticity.

[Brief explanation of the drawing]

Fig. 1-A shows a side model view of the raw material roving for spinning obtained by the present invention, and Fig. 1-B shows a side view of the raw material roving for spinning obtained by the present invention.
This is a cross-sectional model diagram of , with the F component placed at the core and the S component placed at the sheath. FIG. 2-A and B show spinning raw material rovings having a structure opposite to that of FIG. 1-A and B.
Figure 3-A is a side model diagram of a spun yarn obtained using the roving of the present invention, and Figure 3-B is a cross-sectional model diagram of Figure 3-A, in which the F component is the core and the S component. is placed on the sheath. FIGS. 4A and 4B show model diagrams of spun yarn obtained using the same roving of the present invention, which has a structure completely opposite to that of FIGS. 3A and B. Further, FIG. 5-A is a side model view showing the appearance of a uniformly blended spun yarn obtained using the roving of the present invention, and FIG. 5-B is a cross-sectional model view thereof. FIG. 6 is a process diagram showing an example of an embodiment for obtaining raw material roving for spinning in the method of the present invention in which the F component is in the core and the S component is in the sheath. FIG. 7 shows an enlarged view of the vicinity of the front roller in FIG. 6. 1: F component, 2: S component, 3, 3': Back roller, 4, 4': Front roller, 5, 5',
5″: raw material roving for spinning, 6: guide, 7: collector guide.

Claims (1)

[Scope of Claims] 1. A filament component that is one or a bundle of continuous filaments made of thermoplastic synthetic fibers or non-thermoplastic synthetic fibers, etc., and short fiber bundles made of artificial fibers such as thermoplastic synthetic fibers or natural fibers, etc. A raw material roving for Ken-kiri spinning, characterized in that a staple component is continuously combined with a staple component. 2. The raw material roving for Ken-kiri spinning according to claim 1, characterized in that it has a two-layer structure in which the filament component mainly forms a core part and the staple component mainly forms a sheath part. 3. The raw material roving for Ken-cut spinning according to claim 1, characterized in that it has a two-layer structure in which the staple component mainly forms a core part and the filament part mainly forms a sheath part. 4 Short fiber fleece made of man-made fibers such as thermoplastic synthetic fibers or natural fibers, etc. is drafted between the back roller and the front roller to the desired thickness, and continuous slivers made of thermoplastic synthetic fibers or non-thermoplastic synthetic fibers, etc. A method for producing raw material roving for Kenkiri spinning, characterized in that one filament or a bundle of filaments is supplied from the front roller and then bundled. 5. The method for producing raw material roving for Ken-kiri spinning according to claim 4, characterized in that the convergence is carried out by inserting the roving from the center.