JPS60146034A - Sheath/core type composite yarn - 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 is an improvement on a composite yarn having a sheath core type cross-sectional shape, which fully retains the functionality of the sheath core, has excellent weaving and knitting properties, and has good covering properties. All features are included.

Many sheath-core type composite yarns have been proposed in the past, and many of the manufacturing methods involve roving machines and spinning machines, and there are many methods for producing them, but in general, many of them are complicated, and the sheath-core type composite yarns that have been obtained are complicated. Examining the cross section of the yarn reveals that the core fibers are off-center, eccentric, and spread out on the outer surface of the composite yarn. That is, the sheath had a non-uniform vitreous thickness with respect to the core. Therefore, the dyeability becomes non-uniform, and the dye coverage is almost always below the Sθ coefficient. For this purpose, it was necessary to dye the sheath fibers, dye the core 1 fibers, and use a drawing rack. This poses a problem in terms of cost, and in history, the exposure of the horizontally thin core causes a significant problem in weaving and knitting performance, resulting in a major quality defect and many varieties having to be reformed. .

In order to improve the disadvantages of vaporization, the present invention is characterized in that it is possible to use any fiber forming the sheath, such as natural fibers, synthetic fibers,
Z) Raw, semi-synthetic, and other chemical fibers weigh 73-g! 9!
With a chest circumference of approximately 1.5 cm, any filament yarn or spun yarn of chemical fiber such as natural fiber, synthetic, recycled, semi-combined bV, etc. to form the core is used as the core, and the amount of the above ratio is added to the core. The sheath fibers are wrapped around each other, and almost the surface of the composite yarn is completely wrapped.

When the fibers forming the sheath are 411 denier.

Compared to thick denier, even if the weight ratio is the same, the number of spar mature trees during spinning is larger, so the enveloping property of the sheath is more stable. When using fibers with large variations in denier, such as linen, when using loosely bundled fibers such as linen, there is a tendency for the ram to become unevenly oriented, resulting in poor envelopment due to the decrease in spinnability. Therefore, in order for the core to be concentrically and tightly enveloped by the 7-sheath, the sheath must be at least 3
The weight ratio is more than double, that is, the ratio of the sheath to Ii is 73
-g! +I in % heavy ratio! It is necessary to complete one.

A second feature of the present invention is a composite yarn in which the filament yarn or spun yarn forming the core is subjected to a draft action and wrapped in a bending state.

Conventional sheath core type composite yarn is spun by drafting the sheath and core in Ql/s +:I', =:l
2: There is a method of spinning by introducing 1A from the front or rear of the front roller and avoiding the inside of the draft mechanism.

In the latter case, the core is mainly made of filament yarn or spun yarn, and in this method, the core is introduced at a certain angle to the sheath, resulting in poor envelopment and a large number of core arrows and protrusions. . The present invention introduces arbitrary fibers forming the sheath and filament yarns or spun yarns forming the core into a draft mechanism, but since only the sheath is drafted and the core is not subjected to draft action, spinning is performed. , the core is in the draft of sea 2 + "r = also in use.

Since it is grasped by the medium heat of the sheath without eccentricity, it is wrapped concentrically and tightly.

The third feature of the present invention is that any fiber forming the sheath can be spun with a draft of 30 to jθ times, and a twist of 1 yarn yield (ore-style cotton count) of 3. θ~3. It is within the range of A. Generally, it is said that the conditions for improving the enveloping property are to thicken the roving and increase the draft. According to the solid line, there is a thick denier fiber in the first layer, and it is coarse and hard.
The fiber (roving) group with fiber or short fiber content is as follows:
It has been found that when the draft is less than 3θ times, the envelopment is more unilateral and the core is eccentric (~, and when the draft is more than 0 times, the spinnability is significantly reduced depending on the state of light spots and thread breakage. Therefore, in order to obtain the most stable envelopment property, it is preferable to set the draft to 3θ to 0 times.Another experiment showed that there is an appropriate range for the twist coefficient. denotes fc, that is, the twist coefficient is J,9
If it is less than that, the enveloping property of the sheath with respect to the core will be significantly reduced, which will cause the core to be exposed, and the amount of fuzz will increase. On the other hand, the twist coefficient is ? , thicker than Otsu (if this happens, the yarn quality will become hard, which will inhibit the functionality of the core and reduce productivity. Moreover, in circular knitting and flat knitting, the wale will be stiff and curved, which is not desirable.) Therefore, it is preferable to set the appropriate twist coefficient within the range of 1 + λ from 0 to 3. Therefore, if the above draft and twist coefficient are within the appropriate range, concentric and close enveloping properties can be imparted. Next, an example of a manufacturing method for obtaining Mokukyumei composite yarn will be explained with reference to Fig. 2. After passing through the tension rod 2, the plurality of rovings a made of arbitrary fibers forming the sheath are The rovings are collected by valve collector 3, introduced into pack rollers 4 and 4', and separated in parallel by roving separator 5, and then supplied to mill rollers 7 and 7'.Meanwhile, the cores are formed. After passing through the tension rod l, the filament yarn or spun yarn made of any fiber is made to have a moderate tension by the tension device 6, and is fed to the middle roller 7, 7' while being positioned in the middle of the roving yarn a. After this, the sheath fiber ai
Although it is drafted in a spinning state, the core Kz
i I! <# b passes through a non-draft zone of an appropriate tIJ set in the center of the apron bands 8, 8', and by the performance of this sea/, the grasping function of the core fiber t is achieved.
However, even in this grasping state, it is not subjected to frictional resistance with the middle roller 78' and is supplied at the same speed as the roller rotation, so it can pass through the Nigelon bands 8, 8' without being drafted. is collected by a collector g, and passes through a front roller 10, 1.0', and then passes through a ring winding device u.
It is heated by rotation such as l1, and a sheath core type composite yarn C is obtained.

Implementation I9111 0M, L20, IO9 to become a sheath by a mold spinning machine
//． ! ;yd ramie phase system was used as the fiber 8, and a polyester filament 3θd(/,tF) fiber serving as the core was used. What is the weight ratio of this sheath to core?

Sheath G5'Z, core/left side.

Draft 3g. 9 times the number, ? ．． 75th place due to 3 (
A sheath core type composite yarn C of hemp count) was obtained.

Next, we will compare the enveloping properties of Kisei Ming Composite C and conventional Haji (Hai Yarn C') from the perspective of dye coverage.

There are many functions that are desirable for sheath-core type composite yarns.
The most important thing is that the functions of the sheath and core are fully demonstrated. moreover.

When producing a product, most of the fabric 1 is dyed, so it is extremely important to have a good dye coverage. Conventional composite yarn C' has poor enveloping properties, and the core is often exposed (dying only the sheath causes staining, so both the sheath and core teeth are necessary, which causes many problems in terms of bosu. In the present invention, light and medium color dyeing is sheath single dyeing and has the same effect as the conventional sheath core art rack.
In addition, in the case of color-fast binding, conventional yarns required dyeing of the exposed portion of the core, but in the present invention, single-sided sheath dyeing does not pose any problem in practical use. Looking at the visual density of the fabric knitted with a sheeting stitch and dyed with reactive dyes, the dyeability of the fabric according to the present invention is almost the same as that of the original dye, showing a dyeing power/J-rate, but compared to other books. The dyeability was random, and the dyeing coverage was SOφ.

The table below shows these values based on /s Iig and θ value.

From the above test rIA results, it is clear that the product of the present invention has excellent enveloping properties.

In addition, the sample obtained in the wood example was cut with a microtome and a microscopic photograph of the cross section is shown in Figure 2 (
A), in which the fibers a of the core are concentrically and densely enveloped by the fibers of the sheath. However, in the conventional diagram λ υ), 44Q M' of the core of the composite yarn C'
It was observed that part of F'b was exposed on the outer surface of the bound yarn C'.

Next, A: The spinnability of the invention and the wood stone spun yarn will be compared based on data on the number of yarn breaks during spinning.

From the above test results, it was found that the number of thread cuts was reduced to 1+ compared to the conventional method, and the appearance quality was excellent.

Furthermore, in the embodiment of the present invention! The knit archipelago uses a sheath core-type composite yarn that has the cooling feel, water absorption, and moisture absorbing properties of the ramie sheath, as well as the strength and durability of the polyester core.

A high-quality product with functionality such as WAW properties and dimensional stability was obtained.In addition, in the present invention, it is possible to obtain a high-quality product with functionality such as WAW properties and dimensional stability. It is true.

[Brief explanation of drawings]

The drawings show Example 1 of the first embodiment of the present invention. Fig. 1 is a schematic diagram showing the device (6/I+il) for obtaining the composite yarn of the present invention, and Fig. 2 is a photograph of microscopic armor J. ) is the composite yarn of the present invention, and (additional) is the cut lr surface of the conventional composite yarn. Code, ai ma sheath (, b is M fiber that becomes a knob, c, c' are composite threads. Procedural amendments Commissioner of the Patent Office Kazuo Wakasugi 1, Indication of case Patent order of 1982) No. 251787 2
, Title of the invention: Sheath core type composite yarn 3, Person making the amendment Relationship with the case: Applicant 4, Agent 5 Date of amendment order: Initiator 7, Contents of amendment 1, Page 2, line 9 of the specification "C" j′ type ""
First, I corrected it as ``Sea-score type''. 2. First, correct "precision non-uniformity" in the 12th line of the same page to "roughness/density non-uniformity". 3. Same as above, on the 14th line of the same page, amend ``wa L ndoa'' to ``U wa tondode''. 4. Same, page 4, line 7, change ``first sheath'' to ``first sheath''.
Sheath and correct it first. 5. First, correct "grasping" in line 20 of the same page to "grasping." 6. Same, page 7, lines 3 to 6, "at the same speed as the fiber board..." [The fiber board has a gripping function, but even in this gripping state, the fiber board moves at the middle r, l. - Not subject to frictional resistance between pressurization of sea 7 and 7' and apron bands 8 and 8';
First, correct it as "at the same speed as the front 1" - sea 10° 10' rotation. 7. On the same page, change “L 2U,” on the 13th line of the box to [-1
, 2112-1. 8. Same, page 9, line 1, change “not based on θ value” to “θ
Expressed as a value, first correct it. 9 In the same page, box lines 10 to 11, "Core fiber a is sheath fiber" [Core fiber is sheath fiber N4]
First, correct j and so11i by f and a. 1() Same, page 10, lines 7-8, "%lW dimensional stability... was obtained," rW & W I11, j
First, correct the geometrical stability etc. (#ii (, and high quality one ()). first.

Claims (3)

[Claims] (1) The N content ratio of any fibers forming the sheath is 7! r
A sheath core type composite yarn that has good dyeability and is wrapped around any fiber forming the core within the range of ~g5%. (2) Composite yarn according to claim (1), characterized in that any fiber forming the entire core is wrapped in any w, navy blue and eaves forming a sheath without being subjected to draft action. . (3) Any fiber forming the sheath has a draft of 35
- It was spun to 0 and 8, and the twisted number (English cotton checker) was 3
．． 0 to 3.6. Composite yarn according to claim 1 and claim 2, characterized in that the yarn is within the range of 0 to 3.6.