Composite special-shaped section polyester filament yarn

Abstract

The utility model discloses a composite polyester filament yarn with a special-shaped section, belongs to the technical field of textiles, and solves the problems that in order to guarantee the fluffy effect and the air permeability of fibers with special-shaped sections, the structures with more hollow spaces are adopted, so that the tensile property of the fibers in the length direction is reduced, and the service life of the fibers is prolonged. And after being flattened, due to the lack of an internal structure for supporting, the device is difficult to rebound to recover the state of the device. Comprising a core wire and a ring part located on the outer circle of the core wire, a plurality of supporting parts are integrally formed between the core wire and the ring part, a spacing part is formed between every two adjacent supporting parts, and the width of the supporting plate is gradually reduced inwards from the side facing the ring part. According to the polyester filament yarn, the core yarn bears pulling force, the supporting part and the ring part bear stress, the tensile strength of the polyester filament yarn is improved, when the polyester filament yarn is pressed, the ring part and the supporting part preferentially crumple and deform, elastic potential energy is accumulated, the polyester filament yarn can be conveniently restored after external force is removed, energy needed by deformation recovery is reduced, and the core yarn provides elastic support and accelerates the recovery process at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of textiles, in particular to a composite special-shaped cross-section polyester filament. Background Art

[0002] Profiled cross-section fibers are a special type of fiber whose cross-sectional shape is different from traditional round or symmetrical fibers. These fibers are designed to meet the needs of specific applications by changing the fiber geometry to give them unique physical and chemical properties. Profiled cross-section fibers come in a variety of shapes, such as triangles, pentagons, stars, hollow structures, or other complex geometries.

[0003] The advantage of shaped cross-section fibers is that they can provide better coverage and breathability while reducing the weight of the fabric. For example, hollow fibers can be used to make thermal insulation materials because the air layer inside can effectively insulate heat and provide good thermal insulation performance. In addition, shaped fibers usually have a larger surface area than round fibers, which makes them more efficient in areas such as adsorption, filtration and catalysis.

[0004] In the textile industry, fibers with special cross-sections can be produced in a variety of ways, including melt spinning, wet spinning or dry spinning. In the melt spinning process, the polymer melt is extruded through specially designed spinnerets to form the desired special cross-section. Wet spinning and dry spinning use polymers in solutions or emulsions to form fibers through a coagulation and drying process.

[0005] The application of special-shaped cross-section fibers is very wide, ranging from clothing to home textiles. In the field of clothing, they can be used to make lighter, softer and more breathable fabrics; in the field of home textiles, special-shaped fibers can provide better thermal insulation and comfort performance.

[0006] Generally speaking, in order to ensure the fluffiness and air permeability of special-section fibers, they will adopt a structure with more hollow spaces, such as hollow cotton yarn. Such a setting will cause the tensile properties of such fibers to decrease in the length direction. At the same time, after being flattened, it will be difficult for them to rebound and restore their original state due to the lack of internal structure support.

[0007] Therefore, a composite special-shaped cross-section polyester filament is proposed to solve or alleviate the above problems. Utility Model Content

[0008] The utility model aims to solve the shortcomings in the prior art and proposes a composite special-shaped cross-section polyester filament.

[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0010] A composite special-section polyester filament comprises a core filament and a ring portion located on the outer ring thereof, a plurality of support portions are integrally formed between the core filament and the ring portion, a spacing portion is formed between adjacent support portions, and the width of the support plate gradually decreases inward from the side facing the ring portion, and the core filament, the ring portion, and the support portion are all made of polyester.

[0011] Preferably, the support portion comprises a rectangular portion and a necking portion integrally formed therewith, the rectangular portion is integrally formed with an inner wall of the ring portion, and the necking portion is integrally formed with an outer wall of the core wire.

[0012] Preferably, a hollow portion is defined in the support portion, and the distance between the inner wall of the hollow portion and the outer wall of the support portion is kept consistent.

[0013] Preferably, the sum of the cross-sectional areas of the plurality of support portions is smaller than the sum of the cross-sectional areas of the plurality of spacer portions.

[0014] Preferably, the ring portion is composed of a plurality of outer wrapped wires, and the plurality of outer wrapped wires are distributed in a ring array.

[0015] Preferably, the core wire is composed of a plurality of intermediate wires, and the plurality of intermediate wires are distributed in a rectangular array.

[0016] The utility model has the following beneficial effects:

[0017] The design of the utility model utilizes the internal core wire structure, making it a key element for bearing the main tensile force. This structural design ensures that when the polyester filament is pulled along the length direction, the core wire can effectively bear and disperse the force. When external force is applied to the yarn, the role of the support part becomes crucial. It disperses the pulling force evenly throughout the structure by working in coordination with the ring part. This way of dispersing the force not only enhances the overall tensile strength of the polyester filament, but also exhibits excellent performance when facing pressure in the thickness direction.

[0018] When the polyester filament is subjected to extrusion force in the thickness direction, the ring part and the support part can preferentially undergo local collapse and deformation through the design of the spacing groove and the hollow part, thereby absorbing and alleviating the external pressure. This local deformation ability enables the polyester filament to adapt and adjust more flexibly when subjected to pressure, reducing the risk of damage to the overall structure. At the same time, after the support part is compressed and deformed in the radial direction, it can accumulate a certain amount of elastic potential energy. This accumulation of elastic potential energy provides the necessary energy support for the polyester filament to quickly return to its original state after the external force disappears.

[0019] In addition, the core wire is not only the force point in this process, but also undergoes corresponding elastic deformation. This deformation not only helps to disperse and absorb external forces, but also can recover quickly after deformation, further providing elastic potential energy. This elastic deformation and recovery ability accelerates the recovery process of the entire polyester filament cross-section, allowing the yarn to return to its original state more quickly after being subjected to external forces, reducing the recovery work required due to deformation.

[0020] In general, the design of the utility model achieves effective dispersion and absorption of external forces through structural optimization of the internal core wire and the support part. This design not only improves the tensile strength of the polyester filament, but also enhances its adaptability and recovery ability when squeezed. Through this structural design, the overall performance of the polyester filament is significantly improved, so that it can show more stable and reliable performance in various application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0023] Figure 3 It is a side view of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the spinneret in the utility model.

[0025] 1. Core wire; 2. Support part; 3. Outer wire; 4. Hollow part; 5. Spacer; 6. Spinneret; 7. Middle hole; 8. Support hole; 9. Outer hole. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] A composite special-shaped cross-section polyester filament, such as Figure 1-3 As shown, it includes a core wire 1 and a ring portion located on the outer circle thereof, the core wire 1 is composed of a plurality of intermediate wires, and the plurality of intermediate wires are arranged in a rectangular array, and the ring portion is composed of a plurality of outer wrapped wires 3, and the plurality of outer wrapped wires 3 are arranged in a ring array.

[0028] A plurality of support parts 2 are integrally formed between the core wire 1 and the ring part. The core wire 1, the ring part, and the support part 2 are all made of polyester. A spacing part 5 is formed between adjacent support parts 2. The sum of the cross-sectional areas of the plurality of support parts 2 is smaller than the sum of the cross-sectional areas of the plurality of spacing parts 5.

[0029] The width of the support plate gradually decreases inward from the side facing the ring portion. The support portion 2 includes a rectangular portion and a necked portion integrally formed therewith. The rectangular portion is integrally formed with the inner wall of the ring portion, and the necked portion is integrally formed with the outer wall of the core wire 1. A hollow portion 4 is opened in the support portion 2, and the distance between the inner wall of the hollow portion 4 and the outer wall of the support portion 2 remains consistent.

[0030] When the polyester filament needs to be prepared, Figure 4 As shown, it is necessary to prepare a special-shaped spinneret 6, on which a plurality of middle holes 7, supporting holes 8, and outer wrapping holes 9 are provided. The number of the middle holes 7 is nine, and the nine middle holes 7 are arranged in a rectangular array, and the plurality of supporting holes 8 form the cross-sectional shape of the supporting portion 2, and the outer wrapping holes 9 are used to extrude the outer wrapping filaments 3 to form the ring portion. These extruded primary fibers of polyester material are respectively used as the intermediate filaments, the supporting filaments, and the outer wrapping filaments 3, which are melted together to form the core filaments 1, the supporting portion 2, and the ring portion.

[0031] The utility model mainly bears the pulling force in the length direction through the core wire 1 inside it, and when it is pulled, it can share the force on the ring part through the support part 2, so that the ring part and a plurality of support parts 2 can bear the force in the length direction together, thereby significantly improving the tensile strength of the entire polyester filament, and if it is squeezed by the force in the thickness direction, the ring part and the support part 2 can preferentially collapse through the spacing groove and the hollow part 4, and then deform, and after the support part 2 is compressed and deformed in the radial direction, it can accumulate a certain amount of elastic potential energy, so as to push the ring part to return to its original state after the force disappears, thereby reducing the work to be done by the ring part itself after deformation, and in addition, the core wire 1 will act as a force point in the process and will also undergo elastic deformation to provide a certain elastic potential, thereby accelerating the recovery of the cross section of the entire polyester filament to the state before deformation.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A composite special-shaped cross-section polyester filament, characterized in that: The invention comprises a core wire (1) and a ring portion located on the outer ring thereof, a plurality of support portions (2) are integrally formed between the core wire (1) and the ring portion, a spacing portion (5) is formed between adjacent support portions (2), and the width of the support portion (2) gradually decreases inward from the side facing the ring portion, and the core wire (1), the ring portion, and the support portion (2) are all made of polyester.

2. The composite special-shaped cross-section polyester filament according to claim 1, characterized in that: The support portion (2) comprises a rectangular portion and a necking portion integrally formed therewith, the rectangular portion and the inner wall of the ring portion are integrally formed, and the necking portion and the outer wall of the core wire (1) are integrally formed.

3. The composite special-shaped cross-section polyester filament according to claim 2, characterized in that: A hollow portion (4) is provided in the support portion (2), and the distance between the inner wall of the hollow portion (4) and the outer wall of the support portion (2) remains consistent.

4. The composite special-shaped cross-section polyester filament according to claim 1, characterized in that: The sum of the cross-sectional areas of the plurality of support portions (2) is smaller than the sum of the cross-sectional areas of the plurality of spacer portions (5).

5. The composite special-shaped cross-section polyester filament according to claim 1, characterized in that: The ring portion is composed of a plurality of outer wrapped wires (3), and the plurality of outer wrapped wires (3) are distributed in a ring array.

6. The composite special-shaped cross-section polyester filament according to claim 1, characterized in that: The core wire (1) is composed of a plurality of intermediate wires, and the plurality of intermediate wires are distributed in a rectangular array.

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