JPS5921733A - Flame resistant spun yarn and production thereof - 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 relates to a flame-resistant spinning system and a method for producing the same.

Acrylic paste 1fE and cellulose II IIL) one 2
When sintered for 10 to 20 seconds in an oxidizing atmosphere at 00 to 300°C, a quasi-non-explosive flammable III &'l with a carbon content of about 70% is obtained. However, this flame-resistant bamboo fiber does not have a sound range and is weak with a strength of less than 4 g/d, so even if it is made into a fabric, it is insufficient and has a poor air content. And eyes 4
Only unstable products that are easily susceptible to t can be obtained. For this reason,
For example, even if you try to use it as a heat insulating sheet, it has the disadvantage that it cannot exhibit sufficient foldability.

As a solution to these drawbacks, it may be possible to rub this flame-reducing thread (with a straw), but since this flame-resistance 1+ 11E is frIX9 Lm, 1
Ring of Wealth
■There is no doubt that the 1ffliU property in the H process is bad for IE HH, and that the spinning property is poor, and that there is a lot of broken bones and scattering in Juji ('F-Nagawa Kyoto), which makes it significantly worse. There is a fleece. Even if the original 14 m fiber is unrolled, if it is strong enough, it will be given a value of 11 δ by Kenkiri, and the fleece will have an intertwining property of +1, so it will be made into a spinning type. Although it is possible to create a winding wire with a weak vB as described above, it is extremely difficult to use a spinning system. Yo,
Even if spun 4R yarn was made from the flame-resistant fibers, it would still be brittle 1.
Since the 3ilt' yon fiber has a real 1λj,
When removing fluff and light, it tends to fall off, so it is too difficult to put it into practical use.

The purpose of the present invention is to solve the above-mentioned problems and prevent fragile plastics. It is an object of the present invention to provide a flame-resistant spun yarn with a stable form that does not cause fuzz, adhesion, and shedding from inflammatory tIiX fibers. The object of the present invention is to provide a manufacturing method that can efficiently produce such J1 flammable spun yarn.

The flame-resistant spun yarn of the present invention that achieves the above object has a strength of 4
, g / d or less, and a finite length of flame-resistant fibers without care, a plurality of binding fibers are tied into a spiral t( This is a special number.

In addition, the method for producing 11 flame-resistant spun yarns of the present invention involves cutting off two flame-resistant fibers with a strength of 4 g/d or less and uncoiled fibers to obtain a finite length of l (from the fibers). 1 to 0 (form 1 bundle, then draft this #iJ !i bundle to 31 notes or more, then continue to draw 12 people and give 1, and make this false twist P
The purpose is to tie together the floating peripheral part &1 (face) of the core part into a threaded shape due to the action of the pipe.

Hereinafter, the present invention will be explained from Example 1 shown in the drawings.

FIG. 1 shows a flammable spun i-yarn according to Example 1 of the present invention. The r1 inflammatory spinning thread 100 surrounds the continuous fiber bundle 9q of the core 8II and the 11 male bundles 90! For binding multiple pieces wrapped around each other in a spiral shape ■ [99 to I
N has been completed. The fiber bundle 98 consists of a finite length of flame-resistant bait fibers that are weak and non-shrinkable and have a strength of 4 g/d or less,
It is formed by the aggregation of R1 inflammatory IH&Ii in a substantially unstimulated state. Also, Tsuru Kozuka 11 plays 1
991! It is preferable to use the same usat as the finite length R1 flame cultivation Aft, which holds 1 to 11 bundles 98 of 1 to 11 stitches, but it may be a general u+m that is not flame resistant.

In the above-mentioned Rissei bound spun-steam yarn, the bundled bundle 98 in the core is in a substantially untwisted state, and in that state it becomes a bound chemical, so even if it is a fragile jFl Materials made of flaming ash may also generate fuzz or I
There is no chance that the t lit will fall out. Moreover, A1
It has a unique structure because it has spinning + 14 construction, so when it is made into a woven fabric, it has a stable form with no misalignment, and it has a high air content, making it flame resistant. Not only the thermal insulation properties but also the thermal insulation properties by 1N are T1.

FIG. 2 shows Ill Ifl of the process for llt Fa of the above-mentioned 11-flame spindle.

In FIG. 2, 1 is a package in which a tow 2 of flame-resistant yarn, which is a raw material, is wound up, and 3 is a package in which flame-resistant spun yarn 10 is wound up.
0 is wound into a package. The flame-resistant tow 2 was obtained by firing acrylic resin for cellulose in an oxidizing atmosphere of 11 [I], and its strength was 4 g/ It has a brittle characteristic of less than 6d.

In both packages 1.3, a arranging area A, a cutting area 11iB, and a drafting area C1 yarn forming castle are successively provided in series in this order. First, package 1
The tension of the parts 2 pulled out from the cane is adjusted by tensioners 1-4 arranged in a plurality of jittery canes, and then,
Sorted toe breakage A due to Neu Ncroller 5 (JFri
g is done. A rubbing roller 6 is provided in the organizing area.
A middle row (7) which rotates at a surface speed 1 to 10% faster than the 7-4 roller (5) is provided at the rear thereof. Therefore, at this sorting time of 1 dA, each layer 2 is toned to a uniform thickness due to the yXIFi force between it and the circulation roller 6. It is preferable that the tow is heated, and by this heating, the strength of the tow-forming tow can be improved by -M.

The tow 2 that has been towed to a uniform thickness in the towing area A is then sent to the cutting area B.The cutting area B is 1.5 times or more thicker than the middle roller 7. One line is formed by the cutting roller 8 rotating at a high surface speed. Moreover, this Ken-kiri B is surrounded by a shield cover 9, and the inside thereof is maintained at a negative pressure through a suction port 9a connected to a suction device. In this clear region B, tow 2 is stabilized and has a finite length of In tit l! It will be sent to the next draft area C.

Draft t1 is hollow cradle 10 and ki 17iI
The ffi1111'lI plate 11 and the draft roller 12 form an oval shape. Further, the draft area C, together with a part of the next yarn forming area following this draft area C, is surrounded by a shield cover 13, and the inside of the draft area C is surrounded by a suction 013a connected to the 1st pump air chamber. It is maintained at negative pressure. In this way, in the trough Ill C, 11! is composed of the above-mentioned finite length Ill 11E! The thrust is drafted three times or more, creating a floating cone on the outer periphery, and in that state is passed to the next yarn forming area.

In the next yarn forming area, the conveyor apron 15 is disposed between the draft roller 12 and the tip roller 14 (7). and a temporary 1 pA nozzle 16 installed in the darkness between the above-mentioned inscription and the delivery roller 17. The final mt bundle that is connected to this yarn forming area is made of A-buffed fiber (11 threads) and a blank thread is applied to it using a Kusunozzle IG.

Here, the upstream twist given by the dry-purchase false twisting nozzle 16 extends to the center of the conveyor apron 15 (which extends to the central part of the ridge, but the finite length of the floating m?1. As a result, there is a relatively small number of twists on the outer periphery of the #J111E bundle with a strong (R6) in the center.
J Mu A yarn is formed in which the first stitch 1t is made. This yarn is placed at 11 in the center downstream of the air false twist nozzle 16.
A store with strong Usuzuka was shut down, and as a result, *Qualitatively nothing.
Solved in the state of 2 steps (9.1 is attached to the if bundle 90 for 8 in the central part, and the floating circular phase on the outer periphery is connected to the binding line ff1li
99, a tied spun yarn 1 that is tightly bound in the twisting direction.
/j to form 00.

The above-mentioned 15 trough 1 yen in 1' rough 1 area C is important in forming the bound spun yarn of the t invention, and (8) it is small (needs to be at least 3 times as much. That is, the present invention Since the lxL material applied in the 111 fiber is made of 111 fiber which is extremely durable and has a weak flame resistance, if the draft rate in the draft area C is less than 3 times, the occurrence of floating is insufficient, and binding fibers with strong binding force are not formed.As a result, a large amount of Ili Usui's plain 13 is used as binding spun yarn, and only binding spun yarn with weak binding force and low practicality can be obtained. It disappears.

Further, the airflow control plate 11 in the draft area C is effective in generating stable floating air.

In other words, Ili & 1i end l consisting of unreasonable finite length 1
Well, since there is almost no binding force due to the entanglement of the finite length parts, the fleece-like Mj Ili bundle is easily disturbed by the influence of airflow after drafting. This is because it acts effectively to prevent the effects. In particular, if the width of the downstream side of the airflow control plate 11 is made to approach the draft roller 12 as close as possible, the airflow control plate 11 can be brought close to the draft roller 12 to eliminate the gap and the roughness.
lIup board IJI this 11th bump collides (9) ヮ"[It can prevent bending.
As shown in the figure, the lice i1i Kll lij board 11
A notch is provided on the downstream side of the cloth (rubbing is effective in preventing the accumulation of fly fluff).

As mentioned above, the flame-resistant spun yarn of the present invention has a strength of 4 g.
/d, and a shallow concavity of a continuous untwisted 4U tJi It bundle consisting of 11 flame-resistant fibers of finite length with a heat u16, and several ? The 'C1C3Ii1 flammable full HE which has been IM-formed in this manner can be made into a 11 flammable t7i yarn with a stable form that does not cause fluff or shedding of the 111 strands.

Moreover, IN! of the above lV1 flammable spun yarn according to the present invention! The I-construction method involves forming a tri-iff bundle made of TIT fibers with a strength of 4 g/d or less and a width of zero by cutting off flame-resistant fibers. B, then the good bundle 'L: After drafting more than 3 times, continue to false twist (71
Give me this pseudo-illness angle q+! Due to the + action, the floating peripheral part 6 (cave) generated in the 1' rough 1 process is changed to the core part U (
By making the IM structure tied in a spiral shape,
Enabling efficient manufacturing.

("10) *Se (51 Qianxia 1,48/d manufactured by firing acrylic fibers,
1 benign timsoot + denier with 6.5% elongation.

The tow of 6,000 filaments was processed by the process shown in Fig. 2 to reduce the ratio of 1゛rough in the raft area C to 5゜0, 9.
．． 1.13.6 and 3 liters of water, respectively, to produce bound spun i-yarns having spinning counts of 1 [IS, 20S, 3 [IS] and having an external appearance as shown in Fig. 1. . In addition, the stretch in area A, which is also adjusted to the famous water ratio, is 5%, the roller 6 is applied 9 times, the degree of rotation is 200°C, the cutting magnification in area B is 2.5 times, and the yarn forming area is adjusted to 5%. overfeed rate of 5.5
%, the air pressure of the air false twisting nozzle was 3.0 kg/cA, and the spinning speed was 100 m/min.

The occurrence of yarn breakage during spinning is almost the same as that of regular spun yarns for the three types of spun yarns mentioned above, and the spun yarns are all of the same spun quality as the original spun yarns. Is it stable with almost no rips being observed? He had a state of mind. In addition, these spun yarns were oiled with Corning oil to make a single knit (11), but the releasability was R to Y, there was no yarn breakage, and there was no problem with the standing ability.

[Brief explanation of drawings]

Figure 1 is a side view of a flame-resistant spun [N yarn made of an example of the present invention, Figure 2 is a process diagram for producing the same spun silk yarn, and Figure 3 is the main part of the opening used in the same process. FIG. gO... Continuous & I-bundle, 99... Binding thread, 100
...Flame resistant spinning system, 15.Air false twisting nozzle, A. Sorting area, B. Light area, C. Draft area, D. Thread forming area. Agent: Patent attorney Tei Ogawa − Patent attorney: Ken Noguchi Patent attorney: Kazuhiko T. Kusa (12)

Claims (2)

[Claims] (1) Around a substantially untwisted continuous Vc cane II bundle consisting of a finite length of flame-resistant cultivated fibers with a strength of 4 g/d or less and an unwound width, ? J! A flame-resistant IFI yarn characterized by several binding circles III bound into a spiral cane. (2) Cut a tow of flame-resistant lI fiber with a strength of 4 g/d or less and an unwound width to form a bundle made of 111IIl of finite length, and then After drafting more than 3 times, the temporary tray is given I+1, and due to the P;N!!1 action of this false twisting, the floating peripheral part 111 generated during the drafting process is transformed into the core III 11 bundle. A method for producing an R11 flammable spinning system characterized by tying it into a spiral cane.