CN216585340U

CN216585340U - Spinneret plate for producing multi-hollow elastic fiber by one-step method

Info

Publication number: CN216585340U
Application number: CN202123232549.8U
Authority: CN
Inventors: 魏存宏; 汤方明; 王丽丽; 孙晓华; 张元华; 杨超明; 寇婉婷; 秦阳
Original assignee: Jiangsu Hengli Chemical Fiber Co Ltd
Current assignee: Jiangsu Hengli Chemical Fiber Co Ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-05-24
Anticipated expiration: 2031-12-21

Abstract

The utility model relates to a spinneret plate for producing multi-hollow elastic fibers by a one-step method, which comprises a plate body, a plurality of feed inlets and a plurality of discharge outlets, wherein the number of the feed inlets is twice that of the discharge outlets, each two feed inlets correspond to one discharge outlet, each discharge outlet consists of two micropores, each feed inlet corresponds to one micropore, a material passing channel is arranged between each feed inlet and the micropore, each micropore comprises a first annular slit, a second annular slit, a straight slit, a first long slit and a second long slit, a third long slit extends out from the end part of the first long slit to the direction of the second long slit, a fourth long slit extends out from the end part of the second long slit to the direction of the first long slit, and openings are formed in the first annular slit and the second annular slit. The spinneret plate can be used for direct production by a one-step method, and the obtained hollow fiber has higher structural strength and is not easy to break; the spinneret plate can shorten the production process of fibers, can be directly used on two-component composite spinning equipment, and is high in applicability.

Description

Spinneret plate for producing multi-hollow elastic fiber by one-step method

Technical Field

The utility model relates to the technical field of fiber production equipment, in particular to a spinneret plate for producing multiple hollow elastic fibers by a one-step method.

Background

Hollow fibers are chemical fibers having a thin tubular cavity in the axial direction of the fiber, and have light weight and warm-keeping properties because the fibers contain a large amount of still air, and thus have been widely used in the fields of clothing, home textiles, and the like. Such as splayed hollow, circular hollow, triangular hollow and the like, and the main differences are the number of cavities, the hollow degree and the difference of light reflectivity. The spinneret plate is used as one of the core components of spinning, and has the function of converting a viscous-flow high polymer melt into a thin flow with a specific cross section shape through micropores, and solidifying the thin flow into a strand through a cooling medium, wherein the cross section shapes are different, and the corresponding fiber properties are different. In the prior art, various profiled fibers, hollow fibers, composite fibers and the like can be produced by designing special spinneret micropores.

The composite elastic fiber produced by the one-step method at present mainly adopts two-component parallel composite spinning, uses two polyesters or modified polyesters with different performances, generates a self-curling elastic effect due to different heat shrinkability of the two components, and generates a permanent three-dimensional spiral curling structure after heat treatment; along with the improvement of life quality, the requirements of consumers on the functions of the fabric are higher and higher, and the porous fiber on the market has light weight, heat preservation and good elasticity, but is achieved through multiple processes at present, so that the processing flow is longer, and the processing cost is increased.

Disclosure of Invention

The utility model aims to provide a spinneret plate for producing multiple hollow elastic fibers which are light, warm and have permanent elasticity in a one-step method.

The technical scheme adopted by the utility model for solving the technical problem is as follows: a spinneret plate for producing multi-hollow elastic fibers by a one-step method comprises a circular plate body, a plurality of feed inlets and a plurality of discharge outlets, wherein the feed inlets and the discharge outlets are respectively positioned on two opposite surfaces of the plate body, the number of the feed inlets is twice the number of the discharge outlets, every two feed inlets correspond to one discharge outlet, the discharge outlets are composed of two micropores, each feed inlet corresponds to one micropore, a material passing channel is arranged between the feed inlets and the micropores, the micropores comprise a first annular slit, a second annular slit, straight slits for communicating the first annular slit with the second annular slit, a first long slit arranged on the first annular slit and extending to one side, and a second long slit arranged on the second annular slit and extending to one side, and the first long slit and the second long slit are positioned on the same side of the first annular slit, a third long slit extends from the end part of the first long slit to the direction of the second long slit, a fourth long slit extends from the end part of the second long slit to the direction of the first long slit, and openings are arranged on the first annular slit and the second annular slit.

More specifically, the first annular slit, the second annular slit, the first long slit, the second long slit and the opening in the same micropore are distributed in an axisymmetric manner.

More specifically, the first long slit and the second long slit are arranged in parallel.

More specifically, the third long slit and the fourth long slit are on the same straight line and are not communicated, and the length of the third long slit is greater than that of the fourth long slit.

More specifically, the third long slit length is 3 times the fourth long slit length.

More specifically, the opening of the first annular slit is disposed at the outer side of the joint of the first long slit and the first annular slit, and the opening of the second annular slit is disposed at the outer side of the joint of the second long slit and the second annular slit.

More specifically, the shapes of the two micropores are centrosymmetric.

Further specifically, the feed inlet is connected with the material passing channel through a first conical surface, and the size of the material passing channel is smaller than that of the feed inlet.

More specifically, the material passing channel is connected with the micropores through a second conical surface, and the size of the micropores is smaller than that of the material passing channel.

More specifically, the two material passing channels are inclined, and the inclined included angle is 20-35 degrees.

The utility model has the beneficial effects that: by adopting the spinneret plate structure, the fiber with four circular cavities and two square cavities can be directly produced by adopting a one-step method, and the hollow fiber structure has higher strength and is not easy to break in the spinning process; the fiber has the effects of light weight, heat preservation and good elasticity, the manufacturing production process of the fiber can be shortened by adopting the spinneret plate, and the spinneret plate can be directly used on two-component composite spinning equipment and has strong applicability.

Drawings

FIG. 1 is a schematic diagram of the front side of a spinneret plate according to the present invention;

FIG. 2 is a schematic representation of a reverse structure of a spinneret plate according to the present invention;

FIG. 3 is a schematic cross-sectional view of the feed inlet, the material passing channel and the discharge outlet of the present invention;

FIG. 4 is a schematic view of the structure of the micropores in the A direction in FIG. 3.

In the figure: 1. a plate body; 2. a feed inlet; 3. a discharge port; 4. a material passing channel; 5. a first conical surface; 6. a second tapered surface; 31. micropores; 311. a first annular slit; 312. a second annular slit; 313. straight sewing; 314. a first long slit; 315. a second long slit; 316. a third long slit; 317. a fourth long slit; 318. and (4) opening.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 and 2, a spinneret plate for producing multiple hollow elastic fibers by a one-step method includes a circular plate body 1, and a plurality of feed ports 2 and a plurality of discharge ports 3 formed on the plate body 1, where the feed ports 2 and the discharge ports 3 are respectively located on two opposite surfaces of the plate body 1, that is, the feed ports 2 are located on the front surface of the plate body 1, the discharge ports 3 are located on the back surface of the plate body 1, the number of the feed ports 2 is twice that of the discharge ports 3, every two feed ports 2 correspond to one discharge port 3, the discharge ports 3 are composed of two micropores 31, each feed port 2 corresponds to one micropore 31, a material passing channel 4 is arranged between the feed ports 2 and the micropores 31, the spinneret plate is installed on a two-component composite spinning device, two melts with different thermal shrinkages are respectively conveyed to the two discharge ports 2, and then are output from the discharge ports 3 through the material passing channel 4, after the two-component melt is extruded by the spinneret plate, due to the outlet expansion effect, the two components are adhered and closed to form a fiber, two components with different heat shrinkage performances are arranged in parallel in a single fiber, a good self-curling effect is generated, and the fiber is endowed with permanent elasticity.

Based on the above structure, in order to form a multi-hollow fiber, as shown in fig. 4, the micro-pores 31 include a first annular slit 311, a second annular slit 312, a straight slit 313 communicating the first annular slit 311 and the second annular slit 312, a first long slit 314 disposed on the first annular slit 311 and extending to one side, and a second long slit 315 disposed on the second annular slit 312 and extending to one side, wherein the first long slit 314 and the second long slit 315 are located on the same side of the first annular slit 311 and the second annular slit 312, a third long slit 316 extends from an end of the first long slit 314 toward the second long slit 315, a fourth long slit 317 extends from an end of the second long slit 315 toward the first long slit 314, openings 318 are disposed on both the first annular slit 311 and the second annular slit 312, and the openings 318 ensure that the filaments are annular, the first annular slit 311 and the second annular slit 312 form a circular cavity, respectively; the first annular slit 311, the second annular slit 312, the first long slit 314, the second long slit 315 and the opening 318 in the same micropore 31 are distributed in an axisymmetric manner, and the shape is regular and is convenient to control when the single-side fiber is fed.

Further, the first long slit 314 and the second long slit 315 are arranged in parallel, the third long slit 316 and the fourth long slit 317 are in the same line and are not communicated, the third long slit 316 is perpendicular to the first long slit 314, and the fourth long slit 317 is perpendicular to the second long slit 315, so that a rectangular-like cavity is formed in the middle of the composite fiber.

Meanwhile, the length of the third long slit 316 is greater than that of the fourth long slit 317, and preferably, the length of the third long slit 316 is 3 times that of the fourth long slit 317, the opening 318 of the first annular slit 311 is disposed outside the connection between the first long slit 314 and the first annular slit 311, and the opening 318 of the second annular slit 312 is disposed outside the connection between the second long slit 315 and the second annular slit 312.

Further, two be central symmetry between the shape in the micropore 31, through stagger the setting with the breach that does not communicate formation between third long slit 316 and the long slit 317 of fourth, can form two cavities at the composite fiber middle part, form four circular cavities in the composite fiber four corners, the hollowness is fine, contains a large amount of still air in the cavity for composite fiber improves its thermal insulation performance in the lightweight, forms the slot in four circular cavity both sides, and this slot has good hygroscopic property.

In order to facilitate the melt to enter the material passing channel, as shown in fig. 3, the feeding port 2 is connected with the material passing channel 4 through a first conical surface 5, the size of the material passing channel 4 is smaller than that of the feeding port 2, the first conical surface 5 has a flow guiding effect, so that the melt is fed into the material passing channel 4, and the pressurizing and mixing effects are also achieved; meanwhile, the material passing channel 4 is connected with the micropores 31 through the second conical surface 6, the size of the micropores 31 is smaller than that of the material passing channel 4, and the second conical surface 6 also has the functions of flow guiding and pressurizing mixing; the pressure of the spinning can be increased through the arrangement of the two conical surfaces, and the forming effect of the composite fibers is further promoted.

Two punishment in advance passageways 4 are the slope form, and the slope contained angle is 20-35, makes things convenient for two strands of fuse-elements to spout and compounds after the silk, has the certain distance simultaneously between the feed inlet 2 at top, makes things convenient for two kinds of different fuse-elements to get into feed inlet 2 respectively to realize the water conservancy diversion of fuse-element through the conical surface.

In the scheme, as shown in fig. 1 and fig. 2, four circles of feeding ports 2 are arranged around the center of a plate body 1, each circle is provided with 12 feeding ports 2, and the feeding ports 2 are uniformly arranged around the center of the plate body 1, from the inner circle, a first circle is arranged adjacent to a feeding port 2 of a second circle, a corresponding feeding port 2 of the first circle is adjacent to a feeding port 2 of the second circle, the two feeding ports 2 correspond to a discharging port 3, and the discharging port 3 is arranged in the middle of the two feeding ports 2; the third ring and the fourth ring are arranged adjacently, that is, one feeding hole 2 of the third ring is adjacent to one feeding hole 2 of the fourth ring, the two feeding holes 2 correspond to one discharging hole 3, and the discharging hole 3 is arranged in the middle of the two feeding holes 2; simultaneously, the feed inlets 2 of the first circle and the second circle are staggered with the feed inlets 2 of the third circle and the fourth circle.

In conclusion, by the design of the internal shapes of the two micropores 31, the composite elastic fiber with the special-shaped multi-cavity can be directly produced by adopting a one-step method, and the structure with the internal branches and the four-corner circular arcs ensures that the structural strength of the hollow fiber is higher and the hollow fiber is not easy to break in the spinning process, can reduce the friction force between the yarns and equipment in the spinning process and can reduce the phenomena of broken yarns and broken ends; the produced fiber has the effects of light weight, heat preservation and permanent elasticity, the manufacturing production process of the fiber can be reduced by adopting the spinneret plate, and the spinneret plate can be directly used on two-component composite spinning equipment and has strong applicability.

It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a spinneret of many hollow elastic fiber of one-step process production, includes the circular shape plate body (1) and sets up a plurality of feed inlets (2) and a plurality of discharge gate (3) on plate body (1), feed inlet (2) are located two relative faces of plate body (1) respectively with discharge gate (3), a serial communication port, feed inlet (2) quantity is the twice of discharge gate (3) quantity, and every two feed inlets (2) correspond a discharge gate (3), discharge gate (3) comprise two micropore (31), and every feed inlet (2) correspond a micropore (31) be provided with punishment in advance passageway (4) between feed inlet (2) and micropore (31), micropore (31) include straight seam (313) of first cyclic annular slit (311), second cyclic annular slit (312), first cyclic annular slit (311) of intercommunication and second cyclic annular slit (312), The slit-type light source comprises a first long slit (314) which is arranged on the first annular slit (311) and extends out to one side, and a second long slit (315) which is arranged on the second annular slit (312) and extends out to one side, wherein the first long slit (314) and the second long slit (315) are positioned on the same side of the first annular slit (311), a third long slit (316) extends out from the end part of the first long slit (314) to the direction of the second long slit (315), a fourth long slit (317) extends out from the end part of the second long slit (315) to the direction of the first long slit (314), and openings (318) are arranged on the first annular slit (311) and the second annular slit (312).

2. The spinneret plate for producing multiple hollow elastic fibers according to the one-step method of claim 1, wherein the first annular slit (311), the second annular slit (312), the first long slit (314), the second long slit (315) and the opening (318) are distributed in an axisymmetric manner within the same micro hole (31).

3. The spinneret plate for producing multiple hollow elastic fibers according to the one-step method of claim 1, wherein the first long slit (314) and the second long slit (315) are arranged in parallel.

4. The spinneret plate for producing multiple hollow elastic fibers according to the one-step method of claim 1, wherein the third long slit (316) and the fourth long slit (317) are collinear and not connected, and the length of the third long slit (316) is greater than that of the fourth long slit (317).

5. The spinneret plate for producing multiple hollow elastic fibers according to the one-step method of claim 4, wherein the length of the third long slit (316) is 3 times the length of the fourth long slit (317).

6. The spinneret plate for producing multiple hollow elastic fibers according to the one-step method of claim 1, wherein the opening (318) of the first annular slit (311) is disposed outside the junction of the first long slit (314) and the first annular slit (311), and the opening (318) of the second annular slit (312) is disposed outside the junction of the second long slit (315) and the second annular slit (312).

7. The spinneret plate for producing multiple hollow elastic fibers according to the one-step method of claim 1, wherein the shapes in two of said micro holes (31) are centrosymmetric.

8. The spinneret plate for producing multiple hollow elastic fibers according to the one-step method of claim 1, wherein the feed inlet (2) is connected with the feed passage (4) through the first tapered surface (5), and the size of the feed passage (4) is smaller than that of the feed inlet (2).

9. The spinneret plate for producing multiple hollow elastic fibers according to the one-step method of claim 1, wherein the connection between the material passing channel (4) and the micropores (31) is performed through a second tapered surface (6), and the size of the micropores (31) is smaller than that of the material passing channel (4).

10. The spinneret plate for producing multiple hollow elastic fibers according to the one-step method of claim 1, wherein two of said feed-through channels (4) are inclined at an included angle of 20-35 °.