CN217628746U

CN217628746U - Spinneret plate for producing profiled fiber

Info

Publication number: CN217628746U
Application number: CN202221030823.5U
Authority: CN
Inventors: 孙银男
Original assignee: Suzhou Sibin Naite Chemical Fiber Technology Co ltd
Current assignee: Suzhou Sibin Naite Chemical Fiber Technology Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-10-21
Anticipated expiration: 2032-04-29

Abstract

The utility model relates to a production profiled fiber's spinneret, including spinneret body and a plurality of spinneret orifices of distribution on the spinneret body, every spinneret orifice includes the guide hole and spouts a micropore, spout a micropore and guide hole intercommunication, it forms by three rectangular shape slit around same central distribution to spout a pore, keep the clearance between two adjacent rectangular shape slits, each rectangular shape slit includes the body, first bulge, the second bulge, the body has relative first end and second end, the first end of body is close to the center than its second end, first bulge sets up at first end and to being close to central direction protrusion, the second bulge sets up at the second end and to keeping away from central direction protrusion. The spinneret plate provided by the utility model has the advantages of stable structure and long service life; the fiber prepared by the spinneret plate has high profile degree, and the fabric prepared by the fiber is soft, has strong velvet feeling, good moisture absorption and quick drying effects and high brightness.

Description

Spinneret plate for producing profiled fiber

Technical Field

The utility model relates to a spinneret of production profiled fiber.

Background

The spinneret plate is a product commonly used in the textile chemical fiber industry, and the existing spinneret plate generally comprises a spinneret plate body and a plurality of spinneret holes regularly distributed on the spinneret plate body, wherein the spinneret holes comprise guide holes and spinneret micropores. The spinneret plate is used for converting a viscous-state polymer melt or solution into a thin flow with a specific cross section through micropores, solidifying the thin flow through a solidification medium such as air or a solidification bath to form a filament, namely entering from a guide hole and exiting through spinneret micropores. The discharge hole on the common spinneret plate is circular, and the non-circular spinneret plate is called a profile spinneret plate.

The existing profiled spinneret plate has various spinneret micropore shapes, for example, the profile degree of fibers prepared by Y-shaped spinneret micropores with continuous sections is low, the fiber centers are adhered more, the cross section of the formed fibers is similar to a triangle, and fabrics prepared by the fibers with the shapes are not soft enough, have weak fluffy feeling and poor moisture absorption and quick drying effects; the use experience of people is not comfortable enough.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a production profiled fiber's spinneret.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a spinneret plate for producing profiled fibers comprises a spinneret plate body and a plurality of spinneret holes distributed on the spinneret plate body, wherein each spinneret hole comprises a guide hole and spinneret micropores, the spinneret micropores are arranged below the guide holes and communicated with the guide holes, and the spinneret plate is characterized in that the spinneret micropores are formed by distributing three elongated slits around the same center, a gap is kept between every two adjacent elongated slits, each elongated slit comprises a body, a first protruding part and a second protruding part, the body is provided with a first end and a second end which are opposite, the first end of the body is close to the center than the second end of the body, the second end extends in the direction away from the center, the first protruding part is arranged at the first end and protrudes in the direction close to the center, and the second protruding part is arranged at the second end and protrudes in the direction away from the center.

Preferably, the included angle formed between two adjacent elongated slits is less than 180 degrees.

Preferably, the included angle formed by every two adjacent elongated slits is 120 degrees.

Preferably, the distance between two adjacent elongated slits is equal.

Preferably, the distance between two adjacent elongated slits ranges from 0.02 mm to 0.2mm.

Preferably, the first and second protrusions of each elongated slit are arc-shaped or V-shaped.

Preferably, the first protruding parts of the three elongated slits are equal in shape, and the second protruding parts are equal in shape; or the shapes of the first convex part and the second convex part of the three elongated slits are equal.

Preferably, the body of the three elongated slits has the same width.

Preferably, the width of the body of the elongated slit ranges from 0.1 mm to 0.6mm.

Preferably, an included angle formed between every two adjacent elongated slits is less than 180 degrees; the distance between two adjacent long-strip-shaped slits is equal and is 0.02-0.2mm; the widths of the three strip-shaped slits are equal; the shapes of the first protruding part and the second protruding part of the three elongated slits are equal.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the spinneret plate provided by the utility model has stable structure and long service life; the profile degree of the fiber prepared by the spinneret plate is high, and the fabric prepared by the fiber is soft, has strong velvet feeling, good moisture absorption and quick drying effects, higher brightness and comfortable use experience.

Drawings

Fig. 1 is a schematic structural diagram of a spinneret plate for producing profiled fibers according to the present invention;

FIG. 2 is a schematic structural view of a spinneret orifice for producing profiled fibers according to the present invention;

fig. 3 is a schematic structural view of a profile fiber produced by a spinneret provided in some embodiments of the present invention.

In the above drawings: 1-spinneret orifice, 11-elongated slit, 111-body, 112-first projection, 113-second projection, 2-spinneret body, 3-profiled fiber, 31-blade.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to 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", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific 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 is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

As shown in fig. 1 to 2, in an embodiment of the present invention, there is provided a spinneret plate for producing profile fiber, the spinneret plate includes a spinneret plate body 2 and a plurality of spinneret holes 1 distributed on the spinneret plate body 2, each spinneret hole 1 includes a guide hole and a spinneret micro hole, the spinneret micro hole is disposed below the guide hole and is communicated with the guide hole, and the guide hole is used for guiding a polymer melt or a solution in a viscous state into the spinneret micro hole.

As shown in fig. 1, the spinneret micro-holes are formed by three elongated slits 11 distributed around the same center (indicated by o in fig. 1), a circle is drawn by taking the center as a center of the circle, the three elongated slits 11 are distributed along the radial direction of the circle, each elongated slit 11 comprises a body 111, the body 111 has a first end and a second end which are opposite, the body 111 further has two long sides which are opposite, and a square hollow space is arranged between the two long sides. The first end of each elongated slit 11 is closer to the center than the second end thereof, and a gap is maintained between the first end and the center, the second end of the elongated slit 11 extends away from the center, and a gap is maintained between two adjacent elongated slits 11, that is, a gap is maintained between the first ends of two adjacent elongated slits 11. The spinneret plate with three strip-shaped slits 11 distributed discontinuously is provided with a solid structure among the three strip-shaped slits 11, the spinneret holes 1 are not easy to fall off, the service life is long, and the service life can reach more than 4000 hours through testing.

When the profiled fiber is prepared, the spinning high polymer melt with certain elasticity continuously and uniformly enters the three strip-shaped slits 11 of the spinneret micropores under the guidance of the guide holes, the high polymer melt flowing out of the strip-shaped slits 11 is adhered and closed between the two adjacent strip-shaped slits 11, the whole melt trickle is subjected to radial stretching, cooling, solidification and other operations to form the profiled fiber with three blades 31 (the three strip-shaped slits 11 form one blade 31), and the middle parts of the three blades 31 of the profiled fiber cannot form similar fiber shapes due to the fact that more melts cannot be accumulated.

Each elongated slit 11 further comprises a first protruding part 112 and a second protruding part 113, the first protruding part 112 is arranged at the first end of the body and protrudes towards the direction close to the center, the second protruding part 113 is arranged at the second end of the body and protrudes towards the direction far away from the center, the first protruding part 112 and the second protruding part 113 are arc-shaped or V-shaped, when the first protruding part 112 and the second protruding part 113 are arc-shaped, the first protruding part 112 and the second protruding part 113 can be semi-circles, the diameter range of the semi-circles can be 0.1-0.6mm, the first protruding part 112 of the elongated slit 11 protrudes towards the direction close to the center, and the second protruding part 113 of the elongated slit 11 protrudes towards the direction far away from the center; when the first and second protruding

portions

112 and 113 are V-shaped, the sharp corner of the V-shape of the first protruding portion 112 of the elongated slit 11 faces the center, and the sharp corner of the V-shape of the second protruding portion 113 of the elongated slit 11 is away from the center. The first convex part 112 of the elongated slits 11 has better guiding and dispersing functions, and the high polymer melt flowing out from three elongated slits 11 can be better adhered and closed between two adjacent elongated slits 11; the second protruding part 113 of the elongated slit 11 is arranged, and the three blades of the prepared profiled fiber form a certain protrusion at the end part far away from the center of the profiled fiber, so that the fiber can have a good light reflecting effect.

Further, the shapes of the first and

second protrusions

112, 113 of the slits can be selected according to the desired fibers, and the shapes of the first and

second protrusions

112, 113 of the three slits 11 are equal, such as one is arc-shaped and the other is V-shaped; or the first protrusion 112 and the second protrusion 113 of the three elongated slits 11 have the same shape, and are all arc-shaped or V-shaped, and when the first protrusion 112 and the second protrusion 113 are both arc-shaped, the cross section of one elongated slit 11 is in the shape of a circular waist.

Further, the included angle a formed by two adjacent elongated slits 11 is less than 180 degrees, for example, the included angle formed by each two adjacent elongated slits 11 is preferably 120 degrees, see fig. 1.

Further, the distance between two adjacent slits 11 is equal, i.e. the distance d (indicated by d in fig. 1) between the first end and the center of each slit 11 is equal, for example, the distance between two adjacent slits 11 may be in the range of 0.02-0.2mm, and in the case of matching with the width w of the slit 11 body 111, the distance is selected to prepare the fiber with uniform shape.

Further, the width w (denoted by w in fig. 1) of the body 111 of the three elongated slits 11 is equal, and the profiled fiber 3 can be prepared to have three blades 31 with equal shape and size, for example, the width of the body 111 of the elongated slit 11 ranges from 0.1 mm to 0.6mm.

The profiled fiber prepared by the spinneret plate of the embodiment has three blades 31, the three blades 31 are distributed around the same center, a circle is drawn by taking the center as the center of the circle, and the three blades 31 are all distributed along the radial direction of the circle.

In practical application, a plurality of spinneret orifices 1 are arranged, and the plurality of spinneret orifices 1 are distributed on the spinneret plate body 2 in a circular, rhombic or rectangular shape.

In a preferred embodiment, the included angle formed between every two adjacent elongated slits 11 is 120 degrees; the distance between two adjacent strip-shaped slits 11 is equal and is 0.02-0.2mm; the widths of the bodies 111 of the three elongated slits 11 are equal; the first convex part 112 and the second convex part 113 of the three elongated slits 11 have the same shape and size and are both arc-shaped, the profiled fiber prepared by the spinneret plate of the embodiment has three blades 31 with the same shape and size, and the included angle formed between every two adjacent blades 31 is 120 degrees; the profiled fiber has stable structure, can play a role in buffering no matter which direction is subjected to external force, is easy to maintain the shape of the fiber, and the fabric prepared from the fiber has better functionality.

The spinneret plate provided by the embodiment is used for preparing profiled fibers, the regenerated semi-gloss polyester chips with certain intrinsic viscosity are pre-crystallized through a boiling type pre-crystallization bed, then enter a continuous drying tower for drying, the dried chips are melted and extruded through a screw rod to enter a spinning box body, and then are metered through a metering pump and extruded from a spinneret orifice consisting of three strip-shaped slits; cooling by circular air blowing after extrusion, oiling, stretching, heat setting and winding to obtain the special-shaped polyester fiber FDY. Compared with the fiber prepared by the conventional opposite spinneret plate, the fiber prepared by the embodiment has higher profile degree and regular profile fiber edge, and the fabric prepared by the fiber is softer, has stronger velvet feeling, better moisture absorption and quick drying effects and higher brightness, and brings more comfortable use experience feeling to people; the fiber is a bright cationic fiber with a unique style of velvet feeling and suction and discharge effects, the fabric prepared from the fiber overcomes the defect that bright cations reflect rays under the irradiation of light with high intensity to cause discomfort to eyes, and the production benefit is improved by 200 yuan/ton; has wide application market prospect in the fields of high-grade male and female clothes, household textile products and the like.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A spinneret plate for producing profiled fibers comprises a spinneret plate body and a plurality of spinneret holes distributed on the spinneret plate body, wherein each spinneret hole comprises a guide hole and spinneret micropores, the spinneret micropores are arranged below the guide holes and communicated with the guide holes, and the spinneret plate is characterized in that the spinneret micropores are formed by distributing three elongated slits around the same center, a gap is kept between every two adjacent elongated slits, each elongated slit comprises a body, a first protruding part and a second protruding part, the body is provided with a first end and a second end which are opposite, the first end of the body is close to the center of the second end, the second end of the body extends in the direction away from the center, the first protruding part is arranged at the first end and protrudes in the direction close to the center, and the second protruding part is arranged at the second end and protrudes in the direction away from the center.

2. The spinneret plate according to claim 1 wherein the angle formed between two adjacent elongated slots is less than 180 degrees.

3. The spinneret plate according to claim 2, wherein each two adjacent elongated slits form an included angle of 120 °.

4. The spinneret plate according to claim 1 or 2, wherein the distance between two adjacent elongated slits is equal.

5. The spinneret plate according to claim 4, wherein the distance between two adjacent elongated slits is in the range of 0.02-0.2mm.

6. The spinneret plate according to claim 1 or 2 wherein the first and second projections of each of said elongated slots are curved or V-shaped.

7. The spinneret plate according to claim 6 wherein said three elongated slots have equal first projections and equal second projections; or the shapes of the first convex part and the second convex part of the three elongated slits are equal.

8. The spinneret plate according to claim 1 or 2 wherein the width of said three elongated slit bodies is equal.

9. The spinneret plate according to claim 8, wherein said elongated slit body has a width in the range of 0.1-0.6mm.

10. The spinneret plate according to claim 1, wherein the angle formed between each two adjacent elongated slits is less than 180 degrees; the distance between two adjacent long-strip-shaped slits is equal and is 0.02-0.2mm; the widths of the three strip-shaped slits are equal; the shapes of the first protruding part and the second protruding part of the three elongated slits are equal.