JPS5825763B2 - Mixed spinning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a so-called sea-island fiber spinning apparatus among apparatuses for composite spinning of at least two types of polymers.

Conventionally, various spinning devices have been proposed for producing sea-island fibers consisting of two components, one component being dispersed in a plurality of fibers in the other component, but these spinning devices have complicated structures and are difficult to machine.
In addition, the state of the dispersed components (island components) of the spun fibers was such that the independence of each dispersed component was unstable and the uniformity in the fiber axis direction was poor.

For example, increasing the polymer component ratio = island component polymer/sea component polymer, increasing the number of dispersed parts of the island component polymer, increasing the number of parts per unit, melt viscosity of the two-component polymer during spinning, cohesive energy, flow characteristics of the polymer. Due to such factors, it is often difficult to obtain fibers with the desired cross-sectional shape, resulting in distortion of the island shape, irregularity, uneven distribution of island components, etc.
Bonding or aggregation of island component polymers or inversion of the sea-island phase may occur.

and the intended use of the fiber is, in particular, at least one of the fiber components.
When using fibers from which the component polymers have been removed, bonding and aggregation of the island component polymers will definitely be a problem.

The present invention is a device that eliminates the above-mentioned drawbacks of conventional sea-island fibers and can arbitrarily change the dispersion state of the island components. This is a composite spinning device for spinning dispersed composite fibers so that the island components are stably dispersed in the sea component and are also in a stable dispersion state in the fiber axis direction.

That is, at least two types of polymers that intercept the sea-island components introduced separately into the device are uniformly spread in each component distribution groove on the A plate, and a hole is opened at one end of the groove at the bottom of the A plate. It flows out from a plurality of communicating holes of each component polymer which are opened at the other end on the back surface.

After the polymer is spread out again in a state in which different kinds of polymers are alternately surrounded by a plurality of concentric circular grooves of the B plate corresponding to the plurality of continuous holes of each component polymer of the A plate, the island component polymer is placed in the grooves. It flows out through a plurality of communication holes that have one end open at the bottom and the other end open at the back surface.

On the other hand, the sea component polymer has one end opened at the bottom of the groove,
It flows out through a communication hole that opens at the other end in a groove provided on the back surface, and is spread out uniformly in the groove.

The island component polymer flowing out from the plurality of communicating holes in the B plate and the sea component polymer exiting the annular groove form a polymer flow with a sea-island structure, and the polymer flows through a large opening at the upper end of the C plate and a spinning hole at the other end. This is a mixing spinning device that collects the polymer in a plurality of collecting parts and discharges the collected polymer from a nozzle hole for spinning.It has a simple structure, has excellent durability, and can arbitrarily change the state of the island components. This device not only produces sea-island fibers in which sea components are evenly dispersed, but also fibers similar in shape to natural fibers, such as faux fur fibers consisting of a small number of thick denier fibers surrounded by fine denier fluff, and various other types of fibers. Sea-island fibers with a cross-sectional shape can be easily produced.

Next, an example of the mixed spinning apparatus according to the present invention will be explained with reference to the drawings.

FIG. 1 is an assembly diagram of a mixed spinning device according to the present invention.

1 is the A plate, 2 is the B plate, and 3 is the C plate according to the present invention, and each base plate has a dowel pin 4 for fixing the positions of A plate 1 and B plate 2, and a dowel pin 5 for fixing the positions of B plate 2 and C plate 3. I am doing it.

FIG. 2 is an obscured view of the A plate 1 from the polymer inlet side, and FIG. 3 is a sectional view taken along the line AA in FIG. 2.

6 and 7 are groove-shaped polymer inlets bored parallel to each other on the upper surface of plate A;

...an, c, ...-cn, c! 1・-c'
n, bl...bn, dl...dn, dl,...blood are communication holes for introducing polymer liquid provided at the bottoms of the groove-shaped polymer inlets 1 and 2, respectively, and are connected to the target sea island. The number of polymer inlets and the number of communication holes need to be changed as appropriate depending on the number of fibers, the number of polymers, the number of unit sea-island forming parts, etc.

In this figure, as an example, two types of polymers are made into a four-layer fiber,
The case where there are 12 unit sea-island forming parts (n=12) is shown.

Figure 4 is a plan view of plate B viewed from the polymer inflow side.
FIG. 5 is a B-BTh plane view of FIG. 4, A1.・
・-, An:B..., Bn:C1e...
・, Cn: Dl, . . . , Dn are annular groove-shaped polymer inflow ports, and are connected to the communicating holes an, − of plate A, respectively.
bn, -cn, c'n, -Blood, the concentric circular groove polymer of plate B is processed so that the liquid is guided from the blood, and the knock pin 4
Position and secure the A and B plates.

The relationship between the communicating hole in plate A and the groove-shaped polymer inlet in plate B can be varied depending on the design.

The unit sea-island forming part on board B means each collection of small concentric circular grooves shown in FIG. 4, and the number of sea-island layers is determined according to the number of grooves in one unit sea-island forming part.

Therefore, as mentioned above, the communication hole opening on the lower surface of plate A is
Each circular groove in each unit sea-island forming part of the plate must be bored so that different polymers can flow therein.

The unit sea-island forming part shown in FIG. 4 has four groove-shaped polymer flow holes An, Bn, Cn, and Dn including a central circular hole.

In FIG. 4, a total of 12 unit sea-island forming portions are drilled.

The B plate has the above-mentioned groove on the upper surface, and the lower surface has an annular groove corresponding to the upper surface for the sea component as well as the upper surface, and an independent circular hole for the island component.

Grooves An, Bn, Cn, and Dn on the top surface are polymer inflow ports, grooves B'n and D'n on the bottom surface are sea component polymer outflow ports, and circular holes A'n and C'n 2-C'nm on the bottom surface are islands. This serves as a component polymer outlet.

The grooves corresponding to these sea component polymer inflow and outflow ports have a large number of pores α at their bottoms, as shown in FIG.

The polymer flow is connected by β, and while flowing down from the groove on the upper surface to the groove on the lower surface, the polymer flow is stretched out in a circular shape and wraps the island component polymer flowing out from the circular hole, forming a sea-island fiber structure.

The ratio of the sea-island components and the size of the islands can be determined by controlling the flow rate ratio with a gear pump when introducing the polymer into the polymer inlets 6 and 7 of the A plate, or by controlling the island component polymer outflow circular hole in the B plate, A
'n, size and number of C'n1 to C'nm, groove depth of sea component polymer outlet B'n, D'n, groove width 1 circular hole, α
, the size of β.

The number is determined by selecting the number appropriately.

FIG. 6 is a plan view of the C plate seen from the polymer inflow side, and FIG. 7 is a c-cIvfr plane view of FIG. 6.

On the upper surface of plate C, there is a polymer flux P1 corresponding to the unit sea-island forming part of plate B. P2. ...Pn is drilled.

The polymer inflow port has a size comparable to or larger than the polymer outflow port of the unit sea-island forming part of plate B, receives the polymer flow of the sea-island structure flowing out from plate B, and increases the polymer flow rate P1. P2
. . . Polymer discharge port N1 at the bottom of each Pn. N2.
...Extruded from Nn.

One polymer inlet of the C plate is connected to the unit sea-island forming part 1 of the B plate.
It can be manufactured by not only receiving the polymer flows flowing out from each unit, but also collecting the polymer flows from a plurality of unit sea-island forming parts and spinning the collected polymer flows.

Board B and board C are the 5th board. 6. Positioning can be done using the five dowel pins shown in Figure 7.

The above C plate may be used with a spinneret for extruding the 11 polymer, or another spinneret may be provided below the C plate.

Although a circular structure has been described above, the device of the present invention is not limited to a circular structure, and can be used in any arbitrary structure such as a rectangular structure as well as a circular structure.

In the apparatus of the present invention, as described above, the sea component polymer and the island component polymer are discharged separately and then aggregated and spun. Therefore, the independence of the island component is very stable, and the B
Various types of sea-island fibers can be easily produced by changing the size and number of the island component discharge holes in the plate, and sea-island fibers with irregular cross sections can be produced by bringing the islands closer together or by deforming the discharge holes.

On the other hand, if the sea component polymer is removed, ultra-fine filament yarns, ultra-fine irregular cross-section filament yarns, and fibers for simulated animal fur can be produced.

Moreover, this device has a simple structure, making it easy to process, inexpensive, and strong.Moreover, there is no need to install special accessory equipment for this device. This is a mixed spinning device.

[Brief explanation of the drawing]

FIG. 1 is an assembly diagram showing an embodiment of the device according to the present invention, FIG. 2 is a plan view of the A plate seen from the polymer inflow side, and FIG. 3 is a view taken along arrow A-A in FIG. It is a diagram. FIG. 4 is a plan view of plate B as seen from the polymer inflow side.
FIG. 5 is a view taken along the line B--B in FIG. 4. FIG. 6 is a plan view of the C plate seen from the polymer inflow side.
FIG. 7 is a view taken along the line C--C in FIG. 6. 1... A board, 2... B board, 3...
・・C plate, 4, 5・・・Dowel pin, 6, 7・・・
...Polymer inlet.

Claims (1)

[Claims] 1. In a mixing spinning device for obtaining a multicore sea-island fiber formed by laminating a plurality of spindle plates, the middle part is provided with a plurality of groups of concentric grooves on the upper surface for uniformly distributing at least two types of polymers. There is a B plate which communicates the groove and the lower surface with a pore, and has an annular groove on the lower surface for discharging the sea component polymer and an independent circular hole for discharging the island component polymer, and the upper part of the B plate has a is provided with at least two grooves for uniformly distributing at least two kinds of polymers supplied to the device, and the grooves correspond to the concentric dissimilar polymer distribution grooves of the B plate and are arranged to uniformly distribute the at least two kinds of polymers supplied to the device. A with multiple communication holes provided to
The mixed spinning device has a plate, and below the B plate, a C plate is laminated, the upper end of which is wide open and the lower end connected to the spinning hole, corresponding to the concentric hole group of the B plate.