JPH0280609A - Continuous production of rayon filament and device therefor - Google Patents

Abstract

PURPOSE:To obtain rayon filament with good operability in high efficiency by spinning many filaments at the spinning section immediately followed by making primary drawing in a paralleled state and then passing the resultant filaments through respective processes i.e., secondary drawing, scouring, drying and winding. CONSTITUTION:Many rayon filaments are spun at the spinning section 5, and, virtually at the same time, are out to primary drawing in a paralleled state. The resultant filaments are then fed to the secondary drawing, scouring, drying and winding sections 18, 20, 21 and 22, respectively in this order, thus making a treatment of the filaments through parallel running.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention enables efficient processing by running a large number of filaments in parallel and dividing them into mechanical blocks, improving operational efficiency and reducing costs. The present invention relates to a method for continuously manufacturing rayon filaments that can reduce costs, and an apparatus therefor.

[Prior Art] Currently, most rayon filaments (human silk threads) are produced by a method called pound spinning. In this method, spun human silk thread is wound up by centrifugal force into a resin pot that rotates at 8,000 to 10,000 revolutions per minute. In this method, a difference in tension occurs in the yarn between the beginning and the end of winding, which causes uneven strength or dyeing of the product. For this reason, it is mainly used as a lining for clothes.

In order to solve these problems, various types of continuous spinning machines have been proposed in the past, but examples of them being actually produced are extremely rare.

Conventionally, as a continuous rayon filament spinning machine, (1
) Nelson style, (21 Oscar Cohon style, (3)
Kulshan method, (4) industrial rayon method, etc. are known.

Further, Japanese Patent Publication No. 60-50882 discloses a method for continuously producing viscose rayon filament yarn. In this method, as shown in Fig. 4, viscose passes through a viscose filter 1, a viscose guide tube 1', is extruded from a spinning nozzle 2 in a coagulation bath 3, and is produced in a coagulation bath 3. The yarn is washed, desulfurized, bleached, and washed by a washing water supply means 8 and g on a main roll 5 and a separation roll 6, which are arranged to travel spirally at regular intervals through a guide 4.
It is processed through a scouring process such as oil washing. Thereafter, the treated filament yarn 7 is dried by a drying section 9 on the roll, and once drying is completed, it leaves the roll and passes through a guide 10 to a winder 11 where it is wound into a yarn package while applying the appropriate twist to the yarn. This is the method in which it is wound up.

[Problem that the invention seeks to solve]

The Nelson equation (1) has the following disadvantages.

(a) The driver must stand on both sides of the device to operate it, making the operation complicated.

(b) Since various liquids mix on the roller surface,
Poor processing efficiency.

(C) The roller surface becomes dirty because part of the roller is heated for drying, and another part of the roller applies liquid to the yarn.

fd) All materials must be made of high-quality materials, depending on the most corrosive material, which increases the cost.

In addition, the Oscar-Cohon equation (2) above is the same as the above (a
) has been eliminated, and the improvement is that a separate roller is used for drying. However, on the other hand, there is a disadvantage that the number of rollers for processing one thread increases.

Furthermore, the Kurushan method (3) and the Indus 1-Real Rayon method (4) have the same disadvantages as (1) or (2), and are very rarely put into practical use. be.

What is common to (1) to (4) is that a large number of rollers must be used to process one thread, and in order to gain time for chemical treatment and drying, The diameter of each roller has to be increased.

Normally, in a conventional continuous filament spinning machine, the yarn speed is about 100+*/min, and if the yarn thickness is 100 denier, the daily production amount is about 1.5 k per spindle.
Therefore, this type of spinning machine cannot be operated very economically if the equipment cost is high, so it is difficult to operate this type of spinning machine very economically if the equipment cost is high.
It has been used for twice as much or more. on the other hand,
Naturally, tire cords have few requirements regarding appearance quality and do not require a bleaching process, and the method of the present invention makes it possible to obtain even higher economic efficiency.

Furthermore, the method described in Japanese Patent Publication No. 60-50882 has the following disadvantages.

(+1 In the scouring process section, the thread is wound along the axial direction of the roller, which makes it difficult to operate, and various processing liquids mix, reducing processing efficiency.

(2) Since the yarn moves on rollers from one chemical treatment area to another, various treatment liquids mix, reducing treatment efficiency.

(3) Since various cleaning solutions and chemical solutions are applied onto the roller surface and dried on a portion of the roller, various processing solutions are mixed, reducing processing efficiency.

(4) Since the roller is heated in part, crystals etc. adhere to the roller surface and it is easy to get dirty.

(5) Since the materials must be the most corrosive, they must all be made of high-grade materials, resulting in high costs.

On the other hand, in recent years, as rayon filaments have become more widely used, demand for high-quality rayon filaments has also increased in the clothing field. The fibers used for clothing are thin and the productivity is significantly lower than that of tire cord, and in addition, the product is required to have a beautiful appearance and uniform dyeability.

The present invention was made in view of the above points, and it is an object of the present invention to provide a method and apparatus for continuous production of rayon filament, which can efficiently process filaments, improve operability, and reduce costs. This is the purpose.

[Means for solving problems]

In order to achieve the above object, the method for continuously producing rayon filaments of the present invention involves primary drawing of a large number of filaments in parallel in the spinning section 15, as shown in FIGS. Secondary stretching section 18, scouring section 20
, a drying section 21, and a winding section 22, and are processed by running in parallel.

In the method of the present invention, the number of filaments running in parallel is 100 to 300, but if too many filaments are run in parallel, it will be difficult to operate, so if there are a large number of filaments, double-sided construction is required. is desirable.

Furthermore, the continuous production device for rayon filament of the present invention includes:
A spinning section 15, a secondary stretching section 18, a scouring section 20, a drying section 21, and a winding section 22, each equipped with a plurality of spinning pumps 16 each having a plurality of outlets, and each equipped with a spinning nozzle 17 corresponding to the plurality of outlets. The above-mentioned mechanical blocks are connected to each other so that the filaments that have been primarily drawn in the spinning section 15 run and are processed in parallel.

In the apparatus of the present invention, it is preferable that the drying section 21 is provided with a removable cover 41 and the chemical processing section of the scouring section 20 is of a closed structure. A pair of opposing godet rollers 34,35 are provided for the purpose.

Further, some parts of the secondary stretching section or the scouring section, such as the bleaching section, may be omitted.

Furthermore, a drawing tank 38 capable of drawing filaments may be provided above the spinning section 15 in some cases.

[Effect]

Viscose is discharged in parallel from a plurality of spinning nozzles 17 by a spinning pump 16 having a plurality of outlets, and is primarily drawn as a large number of parallel filaments. While keeping these filaments parallel, the secondary stretching section 18 and the scouring section 20
, the drying section 21 and the winding section 22 for processing. In addition, in conventional pot spinning machines, the material is wound around a pot after the primary stretching, so the secondary stretching section can be omitted depending on the application.

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. However, unless there is a specific description, the shapes of the components, their relative positions, numerical values, etc. described in this example are not intended to limit the scope of the present invention, but are merely illustrative. Just an example.

FIG. 1 shows a plan view of the apparatus of the present invention, FIG. 2 shows a front (elevation) view of the apparatus of the invention, and FIG. 3 shows a cross section of the spinning section in the apparatus of the invention. Note that the third figure shows only the left half of the enlarged cross section taken along the line A--A in FIG. 2. 14 is machine-centered.

Reference numeral 15 denotes a spinning section, which is equipped with a plurality of spinning pumps 16 each having a plurality of outlets (two in this example), and a spinning nozzle 1 corresponding to each of the plurality of outlets.
It has 7. 18 is a secondary stretching section, 20 is a scouring section, 2
1 is a drying section, and 22 is a winding section. The scouring section 20 includes a water washing section 23, a desulfurization section 24, a water washing section 25, a bleaching section 26, a water washing section 27, a pickling section 28, a water washing section 30, and an oil treatment section 31. 32 is a part of the compensator.

These machine blocks, that is, the spinning section 15, the secondary drawing section 18, the scouring section 20, the drying section 21, and the winding section 22, are installed at intervals, and a large number of filaments that have been primarily drawn in the spinning section 15 are arranged in parallel. The above mechanical blocks are connected in sequence so that they can be run and processed.

The viscose of the viscose vibe 33 is discharged from, for example, two spinning nozzles 17 by a spinning pump 16 having, for example, two outlets, and is passed through a pair of godet rollers, that is, a lower godet roller 34. The thread (
filament). 36 is a viscose filter;
37 is a coagulation bath.

Thereafter, the yarn is led to a drawing tank 38 via a guide. The spinning unit 15 is equipped with, for example, 50 to 100 spinning pumps 16 on one side, and the spinning unit 15 has a yarn group (100 to
200 pieces) are collected in the upper drawing tank 38 and sent to the secondary drawing section 18 for the next process. In the spinning section 15, equipment including 50 to 100 spinning pumps 16 on one side as described above is installed on both sides, and a total of 200 to 400 yarn groups on both sides run in parallel.

From the secondary stretching section 18 to the winding section 22, a group of 100 to 200 threads per side is run in parallel on each roller. The scouring section 20 includes a water washing section 23, 25, 27, 30, and a desulfurization section 2.
4. It consists of a bleaching section 26, a pickling section 28, an oil treatment section 31, etc., and a squeezing roller is provided at the outlet of each process,
The structure improves processing efficiency and evens out the fiber quality.

The 100 to 200 running threads per side are configured to run on both sides, and the structure is designed in consideration of operability so that the operator can easily process the threads as a double-sided operation equipment. In addition, the chemical treatment section of the scouring section 20 (desulfurization section 24, bleaching section 26, pickling section 28 or/and oil treatment section 31)
An enclosure 40 is provided in the machine to create a hermetically sealed structure, taking into consideration the possibility of chemical contamination of the operator and the improvement of the sanitary environment at the place where the machine is installed.

Further, the drying section 21 is provided with a removable cover 41 to enable efficient and economical drying.

Each machine block is installed with an appropriate space (interval), and the structure is such that when a thread breaks, the operator can enter the space and easily dispose of the broken thread.

〔Effect of the invention〕

As described above, the present invention employs a single spinning pump having multiple outlets for rayon filament,
After first drawing multiple threads with a pair of rollers, scouring,
The structure is such that a large number of threads go through the same drying and winding processes in parallel, and are finally wound into individual wine gooses, resulting in the following effects.

(1) Machine blocks such as the spinning section, secondary stretching section, scouring section, drying section, and winding section are divided and installed, so mixing of chemical solutions is minimized and processing efficiency is improved.

(2) Since a large number of yarn groups are run in parallel from the secondary stretching section to the winding section, operability is good and costs can be reduced.

(3) Since the mechanical block is divided, the chemical processing section can be easily sealed with an enclosure, and the sanitary environment can be improved.

(4) When a removable cover is provided in the drying section, drying can be performed efficiently and economically.

(5) By employing a multiple spinning pump having two or more multiple outlets in one spinning pump, cost reduction can be achieved.

(6) Machine blocks are installed at intervals, so
Processes such as thread breakage can be easily performed.

[Brief explanation of the drawing]

FIG. 1 is an explanatory plan view showing an embodiment of the continuous production apparatus for rayon filaments of the present invention, FIG. 2 is an explanatory front view of the same,
FIG. 3 is an explanatory view showing the left half of the enlarged cross section taken along the line A--A of the spinning section in FIG. 2, and FIG. 4 is a perspective view showing an example of a conventional continuous production apparatus for rayon filaments. DESCRIPTION OF SYMBOLS 1... Viscose-filter, 1'... Viscose guide tube, 2... Spinning nozzle, 3... Coagulation bath, 4... Guide, 5... Main rotor, 6 ...Separation roll, 7...
- Treated filament yarn, 8, g... washing water supply means,
9... Drying section, 10... Guide, 11... Winding machine, 14... Machine center, 15... Spinning section, 16...
Spinning pump, 17... Spinning nozzle, 18... Secondary stretching section, 2... Scouring section, 21... Drying section, 22...
Winding section, 23.25.27.30... Washing section, 24.
... Desulfurization section, 26... Bleaching section, 28... Pickling section, 3
1... Oil treatment section, 32... Compensator part,
33... Viscose pipe, 34... Lower godet roller, 35... Upper godet roller, 36... Viscose strainer, 37... Coagulation bath, 38... Stretching tank, 4... Enclosure, 41...Cover

Claims (1)

[Claims] 1. Primarily drawing a large number of filaments in parallel in a spinning section,
These filaments are passed through a secondary drawing section, a scouring section, a drying section,
A method for continuous production of rayon filament, characterized by sequentially supplying it to a winding section and processing it by running it in parallel. 2 The number of filaments running in parallel is 100 to 3
2. The method for continuously producing rayon filaments according to claim 1, wherein the number of rayon filaments is one-sided or double-sided. 3 A spinning section (15) and a secondary drawing section (18) each equipped with a plurality of spinning pumps (16) each having a plurality of outlets, and a spinning nozzle (17) corresponding to the plurality of outlets.
), scouring section (20), drying section (21), winding section (22)
The above-mentioned machine blocks are connected in such a way that the machine blocks are separated and installed at intervals, and a large number of filaments that have been primarily drawn in the spinning section (15) are run and processed in parallel. Continuous manufacturing equipment for rayon filament. 4. The continuous production apparatus for rayon filament according to claim 3, wherein the drying section (21) is provided with a removable cover (41). 5. The continuous production apparatus for rayon filaments according to claim 3, wherein the chemical treatment section of the scouring section (20) has a closed structure. 6 A pair of opposing godet rollers (34, 35) for primary drawing of a plurality of filaments is connected to the spinning section (
15) The continuous production apparatus for rayon filaments according to claim 3, which is provided in 15). 7. The continuous production apparatus for rayon filaments according to claim 3, wherein a part of the secondary stretching section or the scouring section, such as a bleaching section, is omitted. 8. The continuous production apparatus for rayon filaments according to claim 3, wherein a drawing tank (38) capable of drawing the filaments is provided above the spinning section (15).