JPH0333209A - Spinning and spinning head used therefor - Google Patents

Abstract

PURPOSE:To realize an effective many item and small amount production and obtain a blended yarn and a conjugated yarn by supplying plural kinds of molten polymers to respective spinnerets of mutually adjacent plural spinning-drawing machines through specified exchangeable spinning heads, spinning the polymers and subsequently doubling the resultant filaments. CONSTITUTION:To respective spinnerets 25 of n units of mutually adjacent spinning-drawing machines, n kinds of molten polymers are supplied through either spinning head 1 of (A) a spinning head 1 equipped with a distribution block 3a having a polymer passage capable of introducing a molten polymer of the same kind to a spinneret of the same spinning-drawing machine or (B) another spinning head 1 equipped with another distribution block 3b having a polymer passage capable of distributing and introducing n kinds of polymers to respective spinnerets of the respective spinning-drawing machines. The molten resin is discharged from the respective spinnerets 25, spun and subsequently subjected to doubling, thus obtaining the objective blended yarn composed of different polymers and the objective conjugated yarn, respectively using the distribution blocks (A) and (B).

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention makes it possible to separately obtain different polymer mixed yarns and conjugate yarns by using a single piece of equipment and simply replacing the inside of the spinning head. The present invention relates to a spinning method capable of producing yarn and a spinning head used therein.

[Conventional technology]

Recently, a method for obtaining yarn using a spinning/drawing device in which a spinning section, a stretching section, and a winding section are integrated has been developed and put into practical use. This spinning/drawing apparatus is, for example, as shown in FIG. 6, and includes a spinning section 21 including a pellet tank 10 for storing pellets, a melt extruder 11 for melting the pellets sent from the pellet tank 10, and a melt extruder 11 for melting the pellets sent from the pellet tank 10. A spinneret 25 that turns the polymer into yarn and discharges it, and a spinneret 25 that processes the molten polymer.
A gear pump 30 and a cooling device 2 introduced under predetermined conditions into the
6 and an oiling roll 27 are provided. Further, as the drawing section 22, a first godet roller 33 for taking up the yarn X discharged from the spinneret 25, and a first godet roller 33 for taking the yarn
A second godet roller 34 that stretches the material while winding it up.
and is provided. Further, a bobbin 43 for winding the stretched yarn X is provided as a winding section. Note that 41 is a friction roller.

In response, the present applicant has developed a method for obtaining differentially shrinkable mixed fiber yarn using a device as shown in Fig. 7, and has already filed an application (Patent Application No. 63-45417゜February 1988). 27 Hinode III). That is, in the present invention, two sets of conventional spinning and drawing apparatuses (see FIG. 6) are used, and the yarns X and Y, which have been drawn under different conditions in the left and right spinning and drawing apparatuses, are transferred to one winding section 23 ( In Fig. 7, the device on the right) is used to interlace nozzle 4.
The fibers are split and combined by passing through the thread 0, and then wound up. According to this method, by individually setting the type of resin, discharge conditions, etc. of the left and right devices, it is possible to easily obtain various different shrinkage mixed fiber yarns having different heat shrinkage characteristics.

[Problem that the invention seeks to solve]

However, with the above-mentioned apparatus, although it is easy to obtain a different contraction mixed fiber yarn in which different polymer fibers are combined (hereinafter simply referred to as "different polymer mixed fiber yarn"), molten polymers are simultaneously discharged from the same nozzle hole. (hereinafter simply referred to as "conjugate yarn")
It was impossible to obtain. That is, in order to obtain a conjugate yarn, it is necessary to simultaneously discharge different types of polymers from the same spinneret hole, and a dedicated spinning head must be attached for this purpose.

Therefore, conventionally, it has not been possible to use a single device for manufacturing different polymer mixed yarns and manufacturing conjugate yarns, and a large amount of equipment has been required.

This can be said to be extremely disadvantageous, as the needs for yarn have diversified in recent years and a production system capable of producing a wide variety of products in small batches has been desired.

The present invention was developed in view of these circumstances, and by simply replacing the inside of the spinning head, a single device can be used for producing different polymer mixed yarns and conjugate yarns, making it possible to manufacture a wide variety of yarns. The purpose is to provide a silk spinning method that allows silk spinning to be carried out in a system suitable for small-lot production.

[Means for solving problems]

In order to solve the above problems, the present invention provides n types of molten polymers to each spinneret of n adjacent spinning and drawing devices.
The molten resin is supplied through a spinning head in which a predetermined polymer flow path is formed, and the supplied molten resin is discharged from each spinneret to form yarn, and then these yarns are combined to obtain a mixed fiber yarn. The method, wherein the interior of the spinning head is replaceable as described below.
The distribution blocks [A] and [B] are used to produce a different polymer blend yarn using the distribution block [A], and the distribution block [B]
The first gist is a yarn spinning method for producing conjugate yarn using [A] a polymer flow path in which the same type of molten polymer is introduced into the spinneret of the same spinning and drawing device. thing.

[B] A device equipped with a polymer flow path such that the above n1ll polymer is distributed and introduced into the spinnerets of each spinning and drawing device.

A spinneret for simultaneously supplying n types of molten polymers to n spinning/drawing devices, the outer surface having a polymer inlet communicating with each molten polymer supply source, and a spinneret of each spinning/drawing device. The following two types of distribution blocks [A] and [B] are provided with n polymer communication ports communicating with each other, and a polymer flow path from the polymer introduction port to the polymer communication port is removably attached to the spinning head main body. The second subject is the spinneret which is tamed by any of the following.

[A] A polymer flow path that allows the same type of molten polymer to be introduced into the spinneret of the same spinning and drawing device.

[B] A device equipped with a polymer flow path through which the above n types of polymers are distributed and introduced into the spinnerets of each spinning and drawing device.

[Effect]

That is, in the present invention, when a molten polymer of the nII class is made into n yarns using n adjacent spinning/drawing devices and then made into a differentially shrinkable mixed fiber yarn, two types of molten polymers constituting the inside of the spinning head are used. By simply selecting the distribution block of
Alternatively, it can be set for manufacturing a conjugate yarn in which n yarns made of a composite resin containing n types of polymers in a predetermined ratio are combined. Therefore, a single facility in which a large number of spinning/drawing devices are arranged in parallel can be used as it is for producing a group polymer blend yarn and a conjugate yarn.

Next, the present invention will be explained in detail based on examples.

〔Example〕

FIG. 1 shows a silk reeling device used in one embodiment of the present invention. This spinning device is basically the same as the device shown in FIG. (However, this diagram is schematic). In the figure, molten polymer A is supplied from the melt extruder 11 on the left, and molten polymer B is supplied from the melt extruder 11 on the right.

As shown in FIGS. 2(a) and 2(b), the spinning head 1 includes a plate-shaped spinning head main body 2 and a distribution block 3 placed and fixed at the center of the upper surface of the spinning head main body 2. formed by combining. The placed distribution block 3 is fastened and fixed to the spinning head main body 2 by four bolts 4. Note that 5 is a handle of the distribution block 3.

On the back side of the spinning head main body 2, there are two introduction holes 6a that extend from the back surface into the main body 2 by a certain depth, rise from there at right angles, and open to the upper surface of the main body 2.

6b are formed, and pipes extending from the left and right pellet tanks 10 are communicated with these holes 6a, 6b, respectively. Further, on the front side of the spinning head main body 2, there are four discharge holes 7a, 7b, 7c that extend within the main body 2 to a certain depth, rise from there at right angles, and open on the upper surface of the main body 2.
, 7d are formed, and among these holes, the left 2
One hole 7a.

7b is connected to the spinneret 2 of the spinning and drawing device on the left side through a pipe.
5, and the two holes 7c on the right side.

7d is connected to the spinneret 2 of the spinning and drawing device on the right side through a pipe.
5 have been notified (see Figures 1 and 4).

As the distribution block 3 fixed to the upper surface of the spinning head main body 2, there are, for example, two types of distribution blocks 3a and 3b shown in FIGS. 3(a) and 3(b). These distribution blocks 3a and 3b both have openings 8a at positions corresponding to the introduction holes 6a and 6b that open on the top surface of the spinning head main body 2.
, 8b are formed, and openings 9a, 9b, 9c, and 9d are formed at positions corresponding to the discharge holes 7a, 7b, 7c, and 7d that open on the top surface of the spinning head main body 2.

In the distribution block 3a of FIG. 3(a),
The openings 8a, 9a, 9b are communicated with each other, and the openings 8b, 9c,
9d is in communication. Therefore, if this distribution block 3a is fixed to the spinning head main body 2 and molten polymer A is introduced from the introduction hole 6a and molten polymer B is introduced from the introduction hole 6b, as shown schematically in FIG. , molten polymer A is supplied to the spinneret 25 of the left spinning and drawing device, and molten polymer B is supplied to the spinneret 25 of the right spinning and drawing device. Thereby, a yarn made of polymer A and a yarn made of polymer B can be spun and wound with gold thread to obtain a mixed fiber yarn of different polymers. In the figure, the solid line shows the flow path of molten polymer A, and the broken line shows the flow path of molten polymer B.

On the other hand, in the distribution block 3b of FIG. 3(b), the openings 8a, 9a, and 9c are communicated with each other, and
b and 9d are in communication. Therefore, this distribution block 3b is fixed to the spinning head main body 2, molten polymer A is introduced from the introduction hole 6a, and molten polymer B is introduced from the introduction hole 6b.
As shown in the schematic diagram in FIG. It is supplied to the spinneret 25 of the spinning and drawing device. That is, different types of molten polymers A and B are simultaneously discharged from the same spinneret hole into the left and right spinnerets 25 at a predetermined ratio. Thereby, a thread made of polymer (A+B) can be spun using the left and right devices and wound into a gold thread to obtain a conjugate thread.

Therefore, according to this device, by simply replacing the two types of distribution blocks 3a and 3b as appropriate, it is possible to easily produce either a different polymer mixed yarn or a conjugate yarn, and it is possible to efficiently produce a wide variety of products in small quantities. Lot production can be realized. Moreover, since the molten polymer is supplied to the left and right spinning/drawing devices all at once using one spinning head 1, the quality of the left and right yarns to be combined is stable, and a homogeneous yarn can be obtained. .

In addition, in the above example, two types of molten polymers A,
Although the yarn spinning method using B has been described, the present invention can also be applied to cases where three or more types of molten polymers are used.

In addition, in the above embodiment, one spinning head 1 supplies polymer to the spinning and drawing devices arranged on the left and right.
A single spinning head may be used to simultaneously supply not only one set of spinning and drawing apparatuses but also a plurality of sets of spinning and drawing apparatuses.

In this case, it is necessary to increase the number of molten polymer channels formed in the distribution blocks 3a, 3b in accordance with the number of simultaneous supply devices.

Furthermore, the shape of the spinning head 1 and the method of forming the wave paths of each molten polymer are not limited to the above embodiments, and can be designed as appropriate. For example, the spinning head 1 may be one that allows the two combinations shown in FIGS. 8(a) and 8(b). That is, the distribution blocks 3a and 3b shown in FIG. A height difference is provided between the flow paths for polymer A and the flow path for molten polymer B, which extend horizontally within the block, so that the flow paths for polymer A and molten polymer B do not intersect. Both flow channels on the discharge side are formed obliquely so as not to intersect with each other, and there is no difference in height between the flow channels extending in the horizontal direction.

〔Effect of the invention〕

As described above, according to the present invention, when n types of molten polymers are made into n yarns using n adjacent spinning and drawing devices and then made into a mixed yarn, the inside of the spinning head is configured. do 2
By simply selecting the type of distribution block, the machine can be configured for the production of mixed polymer yarns by combining n yarns of different types, or for the production of conjugate yarns consisting of n types of polymers. be able to. Therefore, a single facility with a large number of spinning/drawing devices arranged in parallel can be used for producing different polymer mixed yarns and conjugate yarns, making it possible to realize efficient high-mix, small-lot production. can. Moreover, since the molten polymer is supplied to n adjacent spinning/drawing devices all at once using one common spinning head, the quality of the yarn to be combined is stable.
It has the advantage that a homogeneous yarn can be obtained.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing an example of a silk reeling device used in the present invention;
FIG. 2(a) is a plan view of a spinning head used in the above apparatus, FIG. 2(b) is a front view thereof, and FIGS. 3(a) and (b) are examples of distribution blocks constituting the above spinning head. A perspective view, FIG. 4 is an explanatory diagram schematically showing the flow of molten polymer when one of the above distribution blocks is used, and FIG. 5 is a schematic illustration of the flow of molten polymer when the other distribution block is used. FIG. 6 is a configuration diagram showing an example of a conventional spinning/drawing apparatus, FIG. 7 is a configuration diagram showing an example of a spinning/drawing apparatus for producing differentially contracted mixed fiber yarn, and FIG. 8(a) and (b) is an exploded perspective view showing a modified example of the spinning head.

Claims (2)

[Claims] (1) N types of molten polymers are supplied to each spinneret of n adjacent spinning/drawing devices via a spinning head in which a predetermined polymer flow path is formed, and the above-mentioned molten polymers are supplied from each spinneret. This is a method of discharging a molten resin to form yarn, and then combining these yarns to obtain a mixed fiber yarn, in which the inside of the spinning head has the following two types of exchangeable distribution blocks [A] and [B], wherein the distribution block [A] is used to produce a mixed polymer yarn, and the distribution block [B] is used to produce a conjugate yarn. A silk spinning method characterized by [A] A polymer flow path that allows the same type of molten polymer to be introduced into the spinneret of the same spinning and drawing device. [B] A device equipped with a polymer flow path through which the above n types of polymers are distributed and introduced into the spinnerets of each spinning and drawing device. (2) A spinning head for simultaneously supplying n types of molten polymers to n spinning and drawing devices, with a polymer inlet communicating with each molten polymer supply source on the outer surface, and a polymer inlet for each spinning and drawing device. The following two types of distribution blocks [A] are equipped with n polymer communication ports each communicating with the spinneret, and a polymer flow path from the polymer introduction port to the polymer communication port is removably attached to the spinning head body. and [B]
A spinning head characterized by being constituted by any one of the above. [A] A polymer flow path that allows the same type of molten polymer to be introduced into the spinneret of the same spinning and drawing device. [B] A device equipped with a polymer flow path through which the above n types of polymers are distributed and introduced into the spinnerets of each spinning and drawing device.