JPS6359433A - False twisted spun yarn - Google Patents

Abstract

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

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to the structure of a spun cotton yarn with an extremely small number of twists. The present invention relates to spun single yarn made of 100% round fibers, which are twisted after the bundles are aligned.

(Prior art) Twisting in ring, mu~, open-end spinning, etc. gives strength and elongation to the yarn, and rounding of the yarn cross section is added for the purpose of obtaining an appropriate texture and appearance.

The degree of twist is set according to the intended use of the thread.

According to known literature, the number of twists per inch of yarn is T,
When the yarn count + (Ei 2 count) is 8, the usage-specific coefficients of cotton yarn are shown in the following table.

As is clear from the above table, it is essential for high-quality knitted yarn to have a twist coefficient extremely low, for example, 2 or less, in order to obtain a yarn with good texture.

However, using the conventionally known supplied roving and spinning machine, the twist coefficient was 2.
It was almost impossible to obtain the following pure cotton yarn.

(Problem to be solved by the invention) In other words, in a normal spinning machine, the nozzle of the Nimmermatic clearer opens in the atmosphere immediately after leaving the nip point of the front roller and constantly sucks the air around the spinning machine. are doing. Therefore, if spinning is performed with an extremely low twisting degree, the non-twisted fleece immediately after leaving the nip point will be scattered by the suction flow before being converged, making it impossible to obtain a homogeneous yarn.

The present research has developed a new method that can completely eliminate the above-mentioned problem with the conventional technology, namely, the problem of fleece scattering that occurs when producing spun single yarn with an extremely low twist for good hand feel. The aim is to provide a thread structure with a strong thread structure.

(Means for solving the problems) In order to achieve the above object, the yarn of the present invention has the following configuration. That is, the fleece is made from spun cotton yarn with a predetermined twist, Enojo's single yarn and cotton fibers, and then the fleece is pulled together and then tied together in a certain direction.

The gist is that the twisting direction of the single yarn and the twisting direction after being aligned are opposite to each other, and the twist coefficient after being aligned is in the range of 1.5 to 2.7. . In addition, the twist coefficient in the present invention is the number T of 6 per inch of yarn, the twist coefficient of yarn +
(Einika +) divided by the square root of S. The yarn of the present invention will be specifically explained below using examples shown in the drawings.

(Example) First, the method for manufacturing the yarn of the present invention will be explained. Second
The figure shows an example of an apparatus for carrying out the above manufacturing method,
In the same figure, (1) is a shinomaki in which roving made of 100% cotton fiber is wound, and the roving (2
) is a known advance, consisting of a roving rod (3), a trumpet (4), an actively rotating bottom pack roller (5), and a top back roller (
6) A pair of rollers consisting of both.

An actively rotating bottom middle roller (7), a pair of dog middle rollers αQ which are in pressure contact with this roller via the upper and lower aprons (8) and (9) and are driven to rotate, an actively rotating bottom front roller (6), and this roller. The top front roller (2) rotates in pressure contact with the top front roller (2), which sequentially passes through a pair of no rollers, during which time it is subjected to drafting action by each pair of rollers with different circumferential speeds, and becomes a fleece (F') that is attached to the top front roller (2) and the bottom roller. Front roller α
It exists in the free gauge region behind υ.

On the other hand, after the twisted single yarn 03 made of 100% cotton fiber is unwound from the package α, the yarn guide A Qf9. After sequentially passing through B (11, C! Q7) and combining with the aforementioned 7 lease CF) in the free gauge area, the top front roller ■
The nip point of the bottom front roller αη is aυ, and the yarn (1) is twisted by a ring traveler mechanism (not shown).
becomes.

In the above process, the 1MA yarn (to) is a single yarn of cotton yarn spun yarn with a predetermined twist, and the fleece (Fl is a fleece yarn similarly formed from cotton fibers. Therefore, these two are combined, and the next composite is made of cotton. A spun single yarn of 100% fiber is formed.

In order to obtain the yarn of the present invention, it is necessary to reverse the twisting direction of the yarn (7) and the single yarn (2). For example, the single yarn (to) in the S direction is combined with the fleece α), and after death, this is combined 4 times in two directions, and while the single yarn o3 is untwisted, this and the 7 leased yarns are aligned and twisted.

The yarn of the present invention obtained in this way has the yarn shown in Fig. 1, and is composed of a predetermined 8 or 2-twist single yarn as a whole, but when it is unraveled in the opposite direction, it becomes a twisted single yarn. The fleece is separated into □□ and non-twisted fleece (3), and the twisting direction of the twisted single yarn (to) is opposite to the twisting direction of the yarn (2).

However, in the above-mentioned spinning process, the process from Shinomaki (1) to fleece (Fl) is the same as the conventionally known process, but in the present invention, the twisted single yarn α Since the twist coefficient of the composite, that is, the yarn (to) is made to be soft to 1.5, the untwisted fleece is entangled with the twisted single yarn, and the inside of the fleece is twisted. It does not cause i&.

According to experiments by Hiromu Shiu, when the twist coefficient is less than 1.5, the fleece scatters even when the twisted single yarns are combined, making normal spinning impossible. On the other hand, if this value exceeds 2.7, the unique texture of the twisted yarn is lost and the yarn quality becomes hard. In addition, the weight ratio of single yarn and 7 lease is 101 parts of single yarn to 250 parts of fleece, preferably 10 parts of fleece.
A range of 0 to 200 is used. The specific spinning procedure will be explained below.

(Example of J4 body) In the apparatus shown in Fig. 2, roving yarn made of 100% cotton fiber (2
) unit weight is 110 gelens (unit length 15 yards),
Fleece CFI corresponding to single % 40" (Ei 2 count) was spun with a total draft of 37 times.

On the other hand, a cotton yarn 40'S (English style thread, twist coefficient 4.0) was used as a single yarn (total), and both were combined, and a cotton yarn 20'S (English style thread, twist coefficient 4.0) with a twist number of 10.9 (twist coefficient 2.43) was used. Shikikyou+) was produced.

The twist direction of the single yarn 40'S mentioned above is 8. Make sure to set the twist direction of the cotton thread 20'S to 2. The obtained cotton yarn 20'S is W as shown in FIG.
Although the structure was 6, it was possible to spin at a spindle rotation speed of 9000 r/g even though the twist coefficient was 2.43, and the obtained yarn quality was also free of summer.

(Effects of the invention) Although the yarn of the present invention is composed of 100% cotton fibers, it is composed of two layers: a cotton yarn layer and a fleece layer made of cotton fibers, so there is no fleece scattering around the top front roller and the twist coefficient is low. Even if it is extremely low, spinning is possible under normal conditions;
It is possible to easily produce a large amount of twisted yarn.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an outline of the yarn of the present invention, and FIG. 2 is an explanatory diagram showing an apparatus for manufacturing the yarn of the present invention. (Support))...fleece, (Y)...thread. (1)... Shinomaki, (2)... Roving. (3)...Roving rod. (4)...Trumpet. (5) Bottom pack roller. (6)...Top pack roller. (7) Bottom middle roller. (8) ('))...Apron. C1O...Top middle roller. α sword...Bottom front roller, 0z...Top front roller. 0...Single thread, 0.41...Package. (g)...Thread guide A, CIQ...Thread guide B. Hitting... Thread guide C0 Figure 1

Claims (1)

[Scope of Claims] A single yarn of spun cotton yarn having a predetermined twist and a fleece formed from cotton fibers are pulled together and then twisted in a certain direction, and the twist direction and the tension of the single yarn are The twisting directions after alignment are opposite to each other, and the twist coefficient after alignment is 1.5 ~
Sweet twisted spun yarn characterized by having a range of 2.7. However, twist coefficient = T÷√(S) T...Number of twists per inch of yarn S...Year count (English count)