A three-component side-by-side composite spinning pack

Abstract

This invention relates to the field of spinning technology and discloses a method for preparing a three-component parallel composite spinneret assembly. Spinnerets A, B, and C, located on the radius line of the spinneret, form a first unit. Each unit has spinnerets A, B, and C respectively opened at the bottom of each of the spinnerets A, B, and C. The spinnerets A and C of each unit converge towards spinneret B to form a spinneret unit. By designing a unique spinneret and cooperating with a distribution plate, the three-component melt is spun into parallel composite filaments, resulting in a wider variety of polyester elastic fibers with broader functional properties, better elasticity, better resilience, a smooth hand feel, and good drape. These fibers possess advantages such as acid and alkali resistance, chemical resistance, good elasticity recovery, resistance to aging, simple processing, good dyeability, and moderate elasticity, and can be used in many fields such as chemical fiber woven fabrics, knitwear, denim, and wool textiles.

Description

Technical Field

[0001] This invention relates to the field of spinning technology, and in particular to a method for preparing a three-component parallel composite spinneret. Background Technology

[0002] Chemical fiber filaments are fibers with textile properties made from natural or artificially synthesized polymers as raw materials, through processes such as preparing spinning solutions, spinning, and post-treatment.

[0003] In chemical fiber textiles, equipment is needed to spin chemical fiber raw materials into chemical fiber filaments, which requires spinneret assemblies. Existing chemical fiber filaments are formed by combining raw materials of different components, heating them to form a melt, and then the melt enters the spinneret assembly. The melt is distributed through independent internal cavities and then extruded through spinneret holes to form composite chemical fiber filaments.

[0004] In the textile industry, spinneret assemblies are used to heat and melt raw materials into a melt, which is then used to form master yarn. In existing technologies, the cost of three-component parallel composite spinnerets is relatively high, and according to market demand, there is a need for a polyester elastic fiber with broader functional performance, good elasticity, good resilience, smooth hand feel, and good drape. Summary of the Invention

[0005] Based on this, it is necessary to address the problems raised in the background technology above by providing a method for preparing a three-component external parallel composite spinneret.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a three-component parallel composite spinneret assembly, comprising a sand cup plate, a first distribution plate, a second distribution plate, a third distribution plate, and a spinneret.

[0007] The spinneret includes a third annular groove A, a third annular groove B and a third annular groove C opened on the end face, and a second through hole A, a second through hole B and a second through hole C extending downward are respectively opened at the bottom.

[0008] The sand cup plate is provided with three sand cup grooves, which respectively distribute component one, component two, and component three into the third annular groove A, the third annular groove B, and the third annular groove C through the first distribution plate, the second distribution plate, and the third distribution plate.

[0009] The second through hole A, the second through hole B, and the second through hole C are respectively provided with spinneret holes A, B, and C that penetrate the bottom surface of the spinneret plate. The spinneret holes A, B, and C located on the radius line of the spinneret plate form the first unit. The bottom of the spinneret holes A, B, and C in each unit are respectively provided with spinneret holes A, B, and C. The spinneret holes A and C in each unit converge toward the spinneret hole B to form a spinneret hole unit.

[0010] In one embodiment, component one is low-viscosity PET, component two is high-viscosity PET, and component three is functional masterbatch.

[0011] In one embodiment, the functional masterbatch is a cooling and antibacterial masterbatch.

[0012] In one embodiment, the third distribution plate includes a second annular groove A, a second annular groove B, and a second annular groove C disposed on the end face. Components one, two, and three enter the second annular groove A, the second annular groove B, and the second annular groove C respectively through the sand cup plate, the first distribution plate, and the second distribution plate. The bottom of the second annular groove A, the second annular groove B, and the second annular groove C are provided with downwardly extending first through holes A, B, and C. The first through hole A communicates with the third annular groove A, the first through hole B communicates with the third annular groove B, and the first through hole C communicates with the third annular groove C.

[0013] In one embodiment, in a spinneret unit, spinneret A and spinneret C are both circular with the same diameter, and spinneret B is strip-shaped with circular portions of the same diameter at both ends and connected in the middle by a connecting portion. Spinneret A, spinneret B and spinneret C are horizontal.

[0014] In one embodiment, the diameters of both spinneret A and spinneret C are 0.23 mm ± 0.1 mm, the distance between the center points of spinneret A and spinneret C is 1.23 mm ± 0.1 mm, the diameter of the circular portion is 0.2 mm ± 0.1 mm, the width of the connecting portion is 0.09 mm ± 0.1 mm, and the distance between the center points of the two circular portions is 0.5 mm ± 0.1 mm.

[0015] Compared with the prior art, the present invention provides a method for preparing a three-component externally parallel composite spinneret assembly, which has the following advantages:

[0016] By designing a unique spinneret and using a distribution plate, the three-component melt is spun into parallel composite filaments, resulting in a wider variety of polyester elastic fibers with better elasticity, resilience, smooth hand feel, and good drape. These fibers are also resistant to acids, alkalis, and chemicals, have good elasticity and resilience, are not prone to aging, are easy to process, dye well, and have moderate elasticity. They can be used in many fields such as chemical fiber woven fabrics, knitwear, denim, and wool textiles. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 These are the top view and longitudinal section view of the third distribution plate in this invention;

[0020] Figure 3 These are the top view and longitudinal section view of the spinneret in this invention;

[0021] Figure 4 for Figure 3 A magnified view of part A in the middle;

[0022] Figure 5 for Figure 4 A schematic diagram of the structure of the spinneret orifice from the D-direction view.

[0023] In the attached image:

[0024] 1. Sand cup plate; 11. Sand cup groove; 2. First distribution plate; 21. First annular groove; 3. Second distribution plate; 31. First strip groove; 4. Third distribution plate; 41. Second annular groove A; 411. First through hole A; 42. Second annular groove B; 421. First through hole B; 43. Second annular groove C; 431. First through hole C; 5. Spinneret plate; 51. Third annular groove A; 511. Second through hole A; 512. Spinneret hole A; 52. Third annular groove B; 521. Second through hole B; 522. Spinneret hole B; 523. Circular part; 524. Connecting part; 53. Third annular groove C; 531. Second through hole C; 532. Spinneret hole C. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] exist Figure 1-5 In the embodiments shown, the present invention provides a technical solution: a three-component parallel composite spinneret assembly, comprising a sand cup plate 1, a first distribution plate 2, a second distribution plate 3, a third distribution plate 4, and a spinneret 5.

[0027] The sand cup plate 1 is provided with three sand cup grooves 11, which respectively distribute component 1: low viscosity PET, component 2: high viscosity PET, and component 3: cooling and antibacterial masterbatch into the third annular groove A51, the third annular groove B52, and the third annular groove C53 through the first distribution plate 2, the second distribution plate 3, and the third distribution plate 4.

[0028] The first distribution plate 2 includes three sets of first annular grooves 21, into which low-viscosity PET, high-viscosity PET, cooling and antibacterial masterbatch respectively enter the three first annular grooves 21.

[0029] The second distribution plate 3 includes three sets of first strip grooves 31, into which low-viscosity PET, high-viscosity PET, cooling and antibacterial masterbatch respectively enter.

[0030] The third distribution plate 4 includes a second annular groove A41, a second annular groove B42, and a second annular groove C43 disposed on the end face. Low-viscosity PET, high-viscosity PET, cooling and antibacterial masterbatch enter the second annular groove A41, the second annular groove B42, and the second annular groove C43 respectively. The bottom of the second annular groove A41, the second annular groove B42, and the second annular groove C43 are provided with a first through hole A411, a first through hole B421, and a first through hole C431 extending downward. The first through hole A411 communicates with the third annular groove A51, the first through hole B421 communicates with the third annular groove B52, and the first through hole C431 communicates with the third annular groove C53.

[0031] The spinneret 5 includes a third annular groove A51, a third annular groove B52 and a third annular groove C53 formed on the end face, and respectively has a second through hole A511, a second through hole B521 and a second through hole C531 extending downward at the bottom.

[0032] The bottom of the second through hole A511, the second through hole B521, and the second through hole C531 are respectively provided with spinneret holes A512, B522, and C532 that penetrate the bottom surface of the spinneret plate 5. The spinneret holes A512, B522, and C532 located on the radius line of the spinneret plate 5 form the first unit. The bottom of each unit's spinneret holes A512, B522, and C532 are respectively provided with spinneret holes A512, B522, and C532. The spinneret holes A512 and C532 of each unit converge toward the spinneret hole B522 to form a spinneret hole unit.

[0033] Furthermore, in a spinneret unit, both spinneret A512 and spinneret C532 are circular with the same diameter, while spinneret B522 is strip-shaped with circular portions 523 of the same diameter at both ends and connected in the middle by a connecting portion 524. Spinnerets A512, B522 and C532 are horizontal.

[0034] The diameters of spinneret A512 and spinneret C532 are both 0.23 mm, the distance between the center points of spinneret A512 and spinneret C532 is 1.23 mm, the diameter of circular part 523 is 0.2 mm, the width of connecting part 524 is 0.09 mm, and the distance between the center points of the two circular parts 523 is 0.5 mm.

[0035] The specific working principle of the present invention will be explained in detail below: low-viscosity PET melt, high-viscosity PET melt, cooling and antibacterial masterbatch melt respectively enter the three sand cup troughs 11, and enter the three first annular grooves 21 of the first distribution plate 2 through the sand cup troughs 11, and are further distributed into the three first strip grooves 31 of the second distribution plate 3.

[0036] Low-viscosity PET melt enters the second annular groove A41, high-viscosity PET melt enters the second annular groove B42, and cooling and antibacterial masterbatch melt enters the second annular groove C43. They then enter the third annular grooves A51, B52, and C53 through the first through holes A411, B421, and C431. The low-viscosity PET melt is spun out through the second through hole A511 from the spinneret hole A512, the high-viscosity PET melt is spun out through the spinneret hole B522, and the cooling and antibacterial masterbatch melt is spun out through the spinneret hole C532. The melts polymerize to form a three-component parallel composite filament.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a three-component parallel composite spinneret assembly, comprising a sand cup plate (1), a first distribution plate (2), a second distribution plate (3), a third distribution plate (4), and a spinneret plate (5), characterized in that: The spinneret (5) includes a third annular groove A (51), a third annular groove B (52) and a third annular groove C (53) on the end face, and respectively has a second through hole A (511), a second through hole B (521) and a second through hole C (531) extending downward at the bottom. The sand cup plate (1) is provided with three sand cup grooves (11), which respectively distribute component one, component two and component three into the third annular groove A (51), the third annular groove B (52) and the third annular groove C (53) through the first distribution plate (2), the second distribution plate (3) and the third distribution plate (4); Among them, the bottom of the second through hole A (511), the second through hole B (521) and the second through hole C (531) are respectively provided with spinneret holes A (512), B (522) and C (532) penetrating the bottom surface of the spinneret plate (5). The spinneret holes A (512), B (522) and C (532) located on the radius line of the spinneret plate (5) form the first unit. The bottom of the spinneret holes A (512), B (522) and C (532) of each unit are respectively provided with spinneret holes A (512), B (522) and C (532). The spinneret holes A (512) and C (532) of each unit converge toward the spinneret hole B (522) to form a spinneret hole unit. Component 1 is low-viscosity PET, component 2 is high-viscosity PET, and component 3 is functional masterbatch; The functional masterbatch is a cooling and antibacterial masterbatch; In a spinneret unit, spinneret A (512) and spinneret C (532) are both circular with the same diameter, and spinneret B (522) is strip-shaped with circular portions (523) of the same diameter at both ends and connected in the middle by a connecting portion (524). Spinneret A (512), spinneret B (522) and spinneret C (532) are horizontal. The diameters of the spinneret A (512) and spinneret C (532) are both 0.23mm ± 0.1mm, the distance between the center points of the spinneret A (512) and spinneret C (532) is 1.23mm ± 0.1mm, the diameter of the circular part (523) is 0.2mm ± 0.1mm, the width of the connecting part (524) is 0.09mm ± 0.1mm, and the distance between the center points of the two circular parts (523) is 0.5mm ± 0.1mm.

2. The method for preparing a three-component externally parallel composite spinneret assembly according to claim 1, characterized in that: The third distribution plate (4) includes a second annular groove A (41), a second annular groove B (42), and a second annular groove C (43) disposed on the end face. Components one, two, and three enter the second annular groove A (41), the second annular groove B (42), and the second annular groove C (43) respectively through the sand cup plate (1), the first distribution plate (2), and the second distribution plate (3). The bottom of the second annular groove A (41), the second annular groove B (42), and the second annular groove C (43) are provided with a first through hole A (411), a first through hole B (421), and a first through hole C (431) extending downward. The first through hole A (411) is connected to the third annular groove A (51), the first through hole B (421) is connected to the third annular groove B (52), and the first through hole C (431) is connected to the third annular groove C (53).

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