Composite functional 4T polyester staple fiber and spinneret

Abstract

The utility model discloses a kind of composite functional 4T polyester staple fiber and spinneret, belong to chemical fiber spinning equipment technical field. Including plate body, guide hole structure and spiral distribution groove, guide hole structure is set on plate body and is provided with several, spiral distribution groove is communicated with guide hole structure, wherein, guide hole structure is used to spray out polyester staple fiber. The utility model improves guide hole structure in spinneret, the guide hole unit in guide hole structure is in 4 groups T shape structure, and four groups T-shaped guide hole unit is symmetrically distributed and the vertical end of T shape is crossed, at this time, the fiber shape that is sprayed through spinneret should be kept approximately with guide hole unit distribution form, so that the cross section of fiber forms four T-shaped structures of symmetric distribution, four T-shaped structures can simultaneously support and deform when fiber deformation, so that fiber can still maintain certain resilience and support after long time use.

Description

Technical Field

[0001] This utility model relates to a composite functional 4T polyester staple fiber and a spinneret, belonging to the technical field of chemical fiber spinning equipment. Background Technology

[0002] Traditional spinnerets often employ a single shape or simple array design for their guide hole structure. To improve the moisture absorption of the spinneret's ejection limit, the industry often sets the opening of the spinneret's guide hole structure to a T-shape, so that the cross-section of the fibers ejected from the spinneret is T-shaped. This improves the fiber's resilience and moisture absorption.

[0003] However, when the existing fiber cross-section is set in a T-shape, although it can improve the resilience of the fiber, the limiting cross-section will deform after long-term use, which will reduce the resilience of the fiber. Therefore, it is necessary to improve the guide hole structure of the spinneret so that the fiber ejected from the spinneret can still maintain a certain resilience after long-term use. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a composite functional 4T polyester staple fiber and a spinneret, which solves the problem of reduced elasticity of T-shaped cross-section fibers after long-term use in the prior art. Therefore, it is necessary to improve the spinneret to solve this problem.

[0005] The technical problem to be solved by this utility model is achieved by the following technical solution: a spinneret for composite functional 4T polyester staple fiber, the spinneret comprising:

[0006] plate body,

[0007] The guide hole structure is set on the plate and several of them are provided.

[0008] The spiral distribution groove is connected to the guide hole structure.

[0009] The guide hole structure is used to eject polyester staple fibers. The guide hole structure consists of 4 sets of T-shaped guide hole units. The four sets of T-shaped guide hole units are symmetrically distributed and the vertical ends of the T-shapes intersect.

[0010] The present invention is further configured such that: the guide hole unit includes a guide hole and a micro hole, one end of the guide hole is connected to a spiral distribution groove, and the other end of the guide hole is connected to a micro hole, and both the guide hole and the micro hole are T-shaped.

[0011] The present invention is further configured such that: the plate is made of high temperature resistant alloy, a boss is provided on the outer side of the plate, the thickness of the plate is 10-30 mm, and the number of guide holes is 800-3000.

[0012] The present invention is further configured such that a transition cone angle is provided at the connection between the guide hole and the microhole, and the angle of the transition cone angle is 45-75 degrees.

[0013] The present invention is further configured such that: the horizontal end of the T-shaped guide hole is arc-shaped, the diameter of the arc at the horizontal end of the guide hole is the same as the width of the horizontal end of the guide hole, the width of the T-shaped part of the guide hole is 1-4 mm, the depth of the guide hole is 10-20 mm, and the guide hole and the micro-hole are concentrically arranged with a size ratio of 2-3:1.

[0014] The present invention is further configured such that: a plurality of guide hole structures are distributed in multiple concentric circles on the plate, the spacing between adjacent guide hole structures in each layer is the same, the spacing between adjacent guide hole structures in each layer is 1-3 times the diameter of the guide hole, and the micropore spacing angle in adjacent layers of guide hole structures is 1-5 degrees.

[0015] The present invention is further configured such that: the width of the T-shaped portion of the micropore is 0.02-0.12 mm, and the lengths of the horizontal and vertical ends of the T-shaped portion of the micropore are 0.1-0.6 mm and 0.15-0.5 mm, respectively.

[0016] A composite functional 4T polyester staple fiber, made from a spinneret.

[0017] The beneficial effects of this utility model are as follows: by improving the guide hole structure in the spinneret, the guide hole units in the guide hole structure are arranged in four T-shaped structures, and the four T-shaped guide hole units are symmetrically distributed and the vertical ends of the T-shapes intersect. At this time, the shape of the fiber sprayed through the spinneret should be similar to the distribution shape of the guide hole units. Therefore, the cross-section of the fiber forms four symmetrically distributed T-shaped structures. When the fiber deforms, the four T-shaped structures can support and deform at the same time, so that the fiber can still maintain a certain degree of resilience and support after long-term use. Attached Figure Description

[0018] Figure 1 This is a top view of the spinneret structure in this utility model;

[0019] Figure 2 This is a side view of the spinneret structure in this utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional view of the guide hole in this utility model;

[0021] Figure 4 This is an enlarged schematic diagram of the cross-section of the micropore in this utility model;

[0022] Figure 5 This is a schematic diagram of the cross-section of polyester staple fiber prepared by the spinneret of this utility model.

[0023] In the figure: 10, plate; 11, guide hole; 12, micropore; 13, spiral distribution groove; 14, polyester fiber. Detailed Implementation

[0024] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this utility model, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0025] like Figures 1 to 5 As shown, a composite functional 4T polyester staple fiber is produced by spinning molten polyester material through a spinneret, ultimately forming polyester fiber 14. The cut surface of the polyester fiber 14 is shaped like four intersecting vertical T-shapes, with grooves between adjacent T-shapes. The spinneret for the composite functional 4T polyester staple fiber includes: a plate body 10, a guide hole structure, and a spiral distribution groove 13. The guide hole structure is disposed on the plate body 10 and has several components, used to spin out the polyester staple fiber. The spiral distribution groove 13 is connected to the guide hole structure. The guide hole structure consists of four sets of T-shaped guide hole units, symmetrically distributed with their vertical ends intersecting. The plate body 10 is made of a high-temperature resistant alloy, with bosses on its outer side. The thickness of the plate body 10 is 10-30 mm, and the number of guide holes is 800-3000.

[0026] like Figure 3 As shown, the guide hole unit includes a guide hole 11 and a micro hole 12. One end of the guide hole 11 is connected to the spiral distribution groove 13, and the other end of the guide hole 11 is connected to the micro hole 12. Both the guide hole 11 and the micro hole 12 are T-shaped.

[0027] like Figure 3 As shown, a transition cone angle is provided at the connection between the guide hole 11 and the microhole 12, and the angle of the transition cone angle is 45-75 degrees.

[0028] like Figure 3 As shown, the horizontal end of the T-shaped guide hole 11 is arc-shaped, and the diameter of the arc at the horizontal end of the guide hole 11 is the same as the width of the horizontal end of the guide hole 11. The width of the T-shaped portion of the guide hole 11 is 1-4 mm, and the depth of the guide hole 11 is 10-20 mm. The guide hole 11 and the micro-hole 12 are concentrically arranged with a size ratio of 2-3:1. The width of the T-shaped portion of the micro-hole 12 is 0.02-0.12 mm, and the lengths of the horizontal and vertical ends of the T-shaped portion of the micro-hole 12 are 0.1-0.6 mm and 0.15-0.5 mm, respectively. Several guide hole structures are distributed in multiple concentric circles on the plate 10. The spacing between adjacent guide hole structures in each layer is the same, and the spacing between adjacent guide hole structures in each layer is 1-3 times the diameter of the guide hole 11. The spacing angle between micro-holes 12 in adjacent layers of guide hole structures is 1-5 degrees.

[0029] By improving the guide hole structure in the spinneret, the guide hole units in the guide hole structure are made into four sets of T-shaped structures, and the four sets of T-shaped guide hole units are symmetrically distributed with their vertical ends intersecting. At this time, the shape of the fiber ejected through the spinneret should be similar to the distribution pattern of the guide hole units. Therefore, the cross-section of the fiber forms four symmetrically distributed T-shaped structures. When the fiber deforms, the four T-shaped structures can support and deform simultaneously, so that the fiber can still maintain a certain degree of resilience and support after long-term use.

[0030] Due to the presence of four symmetrically distributed T-shaped structures on the fiber surface, grooves are formed between adjacent T-shaped structures. Sweat is wicked away through these grooves, quickly transferring moisture and sweat from the human body to the fiber surface, keeping the inner layer dry and cool. In addition, the four T-shaped structures can simultaneously provide support and deformation, increasing the fiber's cohesion and thus its torsional torque, laying the foundation for the yarn fabric to achieve anti-pilling properties.

[0031] Example 1

[0032] A composite functional 4T polyester staple fiber and spinneret, taking the production of 1.5D polyester staple fiber as an example:

[0033] (1) Plate 10: Thickness 23mm; Number of spinnerets 1800;

[0034] (2) Parameters of guide hole 11: The transition cone angle between guide hole 11 and micro-hole 12 is 60°; the width of the T-shaped part in guide hole 11 is 2.0 mm; the depth of guide hole 11 is 14 mm; the size ratio of guide hole 11 to micro-hole 12 is 2:1; the spacing between adjacent guide hole structures in each layer is 1.5 times the diameter of guide hole 11;

[0035] (3) Micropore 12 parameters: The spacing angle between adjacent micropores 12 is 1.2°; the lengths of the horizontal and vertical ends of the T-shaped portion in the micropore 12 are 0.35 mm and 0.2 mm, respectively, and the width of the T-shaped portion in the micropore 12 is 0.06 mm;

[0036] (4) The spiral distribution groove 13 has a depth of 1.5 mm and a width of 4 mm;

[0037] (5) Installation and usage: The spinneret is connected to the external spinning box through the connecting flange and put into operation after preheating to 280℃; spinning is carried out on the LHV431 spinning machine with a pump supply of 980g / min, a winding speed of 1000m / min, and a spinning temperature of 285℃; and drawing is carried out on the LHV903 combined drawing machine with a drawing ratio of 3.2 and a drawing temperature of 70℃.

[0038] The spinneret can run continuously for 200 hours without clogging. The tensile strength of 4T polyester staple fiber produced using the spinneret is 4.5 cN / dtex. The defect content is 3.2 mg / 100g.

[0039] Example 2

[0040] A composite functional 4T polyester staple fiber and spinneret, taking the production of 1.2D antibacterial polyester staple fiber as an example:

[0041] (1) Plate 10: Thickness 23mm; Number of spinnerets 1200;

[0042] (2) Parameters of guide hole 11: The transition cone angle between guide hole 11 and micro-hole 12 is 60°; the width of the T-shaped part in guide hole 11 is 1.8mm; the depth of guide hole 11 is 10mm; the size ratio of guide hole 11 to micro-hole 12 is 2:1; the spacing between adjacent guide hole structures in each layer is twice the diameter of guide hole 11.

[0043] (3) Micropore 12 parameters: The spacing angle between adjacent micropores 12 is 2.8°; the lengths of the horizontal and vertical ends of the T-shaped portion in the micropore 12 are 0.28 mm and 0.18 mm, respectively, and the width of the T-shaped portion in the micropore 12 is 0.05 mm;

[0044] (4) The spiral distribution groove 13 has a depth of 1.5 mm and a width of 4 mm;

[0045] (5) Installation and usage: The spinneret is connected to the external spinning box through the connecting flange and put into operation after preheating to 280℃; spinning is carried out on the LHV431 spinning machine with a pump supply of 580g / min, a winding speed of 950m / min, and a spinning temperature of 280℃; and drawing is carried out on the LHV903 combined drawing machine with a drawing ratio of 3.3 and a drawing temperature of 68℃.

[0046] The spinneret can run continuously for 180 hours without clogging. The 4T polyester staple fiber produced by the spinneret has a breaking strength of 4.2cN / dtex, a defect content of 2.8mg / 100g, and an antibacterial rate of 99.0%.

[0047] Example 3

[0048] A composite functional 4T polyester staple fiber and spinneret, taking the production of 1.7D flame-retardant polyester staple fiber as an example:

[0049] (1) Plate 10: Thickness 23mm; Number of spinnerets 1800;

[0050] (2) Parameters of guide hole 11: The transition cone angle between guide hole 11 and micro-hole 12 is 60°; the width of the T-shaped part in guide hole 11 is 2.0 mm; the depth of guide hole 11 is 14 mm; the size ratio of guide hole 11 to micro-hole 12 is 2:1; the spacing between adjacent guide hole structures in each layer is 1.5 times the diameter of guide hole 11;

[0051] (3) Micropore 12 parameters: The spacing angle between adjacent micropores 12 is 1.2°; the lengths of the horizontal and vertical ends of the T-shaped portion in the micropore 12 are 0.35 mm and 0.2 mm, respectively, and the width of the T-shaped portion in the micropore 12 is 0.06 mm;

[0052] (4) The spiral distribution groove 13 has a depth of 1.5 mm and a width of 4 mm;

[0053] (5) Installation and usage: The spinneret is connected to the external spinning box through the connecting flange and put into operation after preheating to 280℃; spinning is carried out on the LHV431 spinning machine with a pump supply of 1155g / min, a winding speed of 1050m / min, and a spinning temperature of 285℃; and drawing is carried out on the LHV903 combined drawing machine with a drawing ratio of 3.16 and a drawing temperature of 72℃.

[0054] The spinneret can run continuously for 180 hours without clogging. The 4T polyester staple fiber produced using the spinneret has a breaking strength of 4.0 cN / dtex, a defect content of 3.6 mg / 100g, and an oxygen index of 31.2%.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A spinneret for composite functional 4T polyester staple fiber, characterized in that: The spinneret includes: Plate body (10), The guide hole structure is set on the plate (10) and has several holes. The spiral distribution groove (13) is connected to the guide hole structure. The guide hole structure is used to eject polyester staple fiber. The guide hole structure consists of 4 sets of T-shaped guide hole units. The four sets of T-shaped guide hole units are symmetrically distributed and the vertical ends of the T-shapes intersect. The guide hole unit includes a guide hole (11) and a micro hole (12). One end of the guide hole (11) is connected to the spiral distribution groove (13), and the other end of the guide hole (11) is connected to the micro hole (12). Both the guide hole (11) and the micro hole (12) are T-shaped. A transition cone angle is provided at the connection between the guide hole (11) and the micro hole (12), and the angle of the transition cone angle is 45-75 degrees; Several of the aforementioned guide hole structures are distributed in multiple concentric circles on the plate (10). The spacing between adjacent guide hole structures in each layer is the same, and the spacing between adjacent guide hole structures in each layer is 1-3 times the diameter of the guide hole (11). The spacing angle between the micropores (12) in the adjacent guide hole structures is 1-5 degrees.

2. The spinneret for composite functional 4T polyester staple fiber according to claim 1, characterized in that: The plate (10) is made of high temperature resistant alloy. A boss is provided on the outer side of the plate (10). The thickness of the plate (10) is 10-30 mm. The number of guide holes is 800-3000.

3. The spinneret for composite functional 4T polyester staple fiber according to claim 1, characterized in that: The horizontal end of the T-shaped guide hole (11) is arc-shaped. The diameter of the arc at the horizontal end of the guide hole (11) is the same as the width of the horizontal end of the guide hole (11). The width of the T-shaped part of the guide hole (11) is 1-4 mm, and the depth of the guide hole (11) is 10-20 mm. The guide hole (11) and the micro-hole (12) are concentrically arranged and the size ratio is 2-3:

1.

4. The spinneret for composite functional 4T polyester staple fiber according to claim 1, characterized in that: The width of the T-shaped portion of the micropore (12) is 0.02-0.12 mm, and the lengths of the horizontal and vertical ends of the T-shaped portion of the micropore (12) are 0.1-0.6 mm and 0.15-0.5 mm, respectively.

5. A composite functional 4T polyester staple fiber, characterized in that: Made from the spinneret as described in any one of claims 1 to 4.

Images