High-strength polyester composite yarn
By using the melt bonding technology of multi-layer structure in the fiber composite wire, an integrated structure is formed, which solves the problem of the increase in tensile strength of the existing fiber composite wire but insufficient integrity, and achieves significant improvement in mechanical properties and durability guarantees .
Patent Information
- Application Number
- CN202420860617.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-24
AI Technical Summary
When the existing fiber composite wires enhance tensile strength, the integrity of the twisting method is limited, which is prone to loosening and dispersing.
Using the melt bonding technology of a multi-layer structure, by setting a connecting layer on the outside of the intermediate wire and adding an outer cladding layer on the outside of the outer cladding wire, and forming an integrated structure by hot melting, the melting point of the connecting layer and the outer cladding layer is smaller than that of the intermediate wire and the outer cladding wire. Melting point, fill to pits and depressions to increase contact area and connection strength.
The multi-layered and tight bonding of the fiber is achieved, which significantly improves the overall mechanical properties and durability, ensures the stability and reliability of the fiber in long-term use, and avoids dispersion or separation.
Smart Images
Figure CN222182637U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of textiles, in particular to a high-strength polyester composite yarn. Background Art
[0002] Fibers are the basic units that make up textiles. They can be natural, such as cotton, wool and silk, or man-made or synthetic, such as viscose, polyester and nylon. The properties of fibers determine the strength, softness, breathability and appearance of textiles. Among the many properties, tensile strength is a key indicator of fiber performance, which describes the ability of fibers to resist breaking when subjected to tensile forces.
[0003] In order to enhance the tensile strength of fibers, a variety of methods can be used. First, the molecular structure of the fiber can be enhanced by chemical modification. For example, by increasing the crosslinking between the fiber polymer chains, its tensile strength can be improved. This modification can be achieved by the formation of covalent bonds or the introduction of crosslinking agents. Secondly, physical processing methods, such as stretching orientation, can also significantly improve the strength of the fiber. During the production process, the fiber can be stretched at high temperature through a stretching machine, so that the molecular chains are arranged more neatly and orderly, thereby enhancing the tensile properties of the fiber.
[0004] In addition, through current means, there is also a physical method of twisting several fibers together to enhance the tensile strength of the entire composite yarn. However, in this way, there is no strong holding force between the fibers, and they are only restrained together by the friction force after twisting. The integrity is limited and it is easy to loosen and spread.
[0005] Therefore, a high-strength polyester composite yarn is proposed to solve or alleviate the above problems. Utility Model Content
[0006] The utility model aims to solve the shortcomings in the prior art and proposes a high-strength polyester composite yarn.
[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0008] A high-strength polyester composite yarn comprises an intermediate yarn and two outer covering yarns spirally wound on the outside thereof, wherein the outer sides of the intermediate yarn and the outer covering yarns are respectively fixedly connected with a connecting layer and an outer covering layer, the connecting layer and the outer covering layer are hot-melted into an integral structure, the outer covering layer is hot-melted at the outermost side to form an outer wrapping layer, and the melting points of the connecting layer and the outer covering layer are lower than the melting points of the intermediate yarn and the outer covering yarn.
[0009] Preferably, there are a plurality of pits on the outer peripheral wall of the intermediate yarn, and the inner circle of the connecting layer extends to and fills the pits.
[0010] Preferably, the outer circle of the outer sheath wire is recessed inward to form a plurality of recesses, and the inner circle of the outer sheath extends to and fills the recesses.
[0011] Preferably, the cross-sectional area of the outer covering wire is smaller than the cross-sectional area of the intermediate wire.
[0012] Preferably, the outer covering filament and the intermediate filament are both made of polyester.
[0013] Preferably, the connecting layer and the outer covering layer are both composed of a plurality of polypropylene powder particles.
[0014] The utility model has the following beneficial effects:
[0015] The design of the utility model utilizes the melt bonding technology of the multi-layer structure. By setting a connecting layer on the outside of the intermediate wire and adding an outer covering layer on the outside of the outer covering wire, these two additional layers can achieve tight welding of the inner circle outer covering layer and the connecting layer after melting treatment, thereby forming a solid integrated structure. This structure not only physically realizes the close combination of multiple layers, but also significantly improves the overall mechanical properties in function.
[0016] During the welding process, the material selection and melting point control of the connecting layer and the outer covering layer are crucial to ensure effective bonding in the molten state while maintaining sufficient stability and strength after cooling. Through welding, the connecting layer and the outer covering layer can fully fill any pits and depressions on the surface of the intermediate wire after extension, thereby maximizing the contact area and connection strength between the intermediate wire and the outer covering wire.
[0017] In addition, this integrated structural design also takes into account durability and reliability in actual use. By strengthening the fixation between the intermediate filament and the outer covering filament, it not only improves the overall tensile strength of the polyester composite filament, but also ensures that the layers will not spread or separate when subjected to external forces, thereby ensuring the stability and reliability of the fiber during long-term use.
[0018] The utility model realizes a significant improvement in the mechanical properties of the polyester composite yarn through the structural design and the welding method, while maintaining good integrity and durability. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the structure of the utility model;
[0020] Figure 2 for Figure 1 The enlarged view of point A in the middle;
[0021] Figure 3 This is a schematic diagram of the structure of the utility model before hot pressing;
[0022] Figure 4 for Figure 3 Enlarged view of point B in the middle.
[0023] 1. Intermediate wire; 101. Pit; 2. Connecting layer; 3. Outer wire; 301. Petal; 4. Depression; 5. Outer layer; 6. Outer sheath. DETAILED DESCRIPTION
[0024] 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.
[0025] A high-strength polyester composite yarn, such as Figure 1-4 As shown, it includes an intermediate wire 1 and two outer covering wires 3 spirally wound on the outside thereof. Meanwhile, the cross-sectional area of the outer covering wire 3 is smaller than that of the intermediate wire 1. Both the outer covering wire 3 and the intermediate wire 1 are made of polyester.
[0026] The outer sides of the intermediate yarn 1 and the outer sides of the outer covering yarn 3 are respectively fixedly connected with a connecting layer 2 and an outer covering layer 5, the melting points of the connecting layer 2 and the outer covering layer 5 are lower than the melting points of the intermediate yarn 1 and the outer covering yarn 3, and the connecting layer 2 and the outer covering layer 5 are both composed of a plurality of polypropylene powder particles. After the outer sides of the intermediate yarn 1 and the outer covering yarn 3 are coated with viscose and covered with a large amount of polypropylene powder particles, a connecting layer 2 is formed on the outer side of the intermediate yarn 1, and an outer covering layer 5 is formed on the outer side of the outer covering yarn 3.
[0027] There are a number of pits 101 on the outer peripheral wall of the intermediate yarn 1, and the pits 101 are generated by alkali treatment. The inner circle of the connecting layer 2 extends and fills into the pits 101. The outer circle of the outer sheath 3 is recessed inward to form a number of recesses 4, and the recesses 4 are arranged by forming petals 301 by the outer sheath 3 between adjacent recesses 4. The inner circle of the outer sheath 5 extends and fills into the recesses 4. The connecting layer 2 and the outer sheath 5 are hot-melted into an integrated structure, and the outer sheath 5 is hot-melted at the outermost side to form an outer sheath 6.
[0028] The utility model can bond the connecting layer 2 on the outside of the intermediate yarn 1 and the outer covering layer 5 on the outside of the outer covering yarn 3, so that the inner circle of the outer covering layer 5 is welded together with the inner circle of the connecting layer 2 after melting, and then form an integrated structure, and then extend and fill into the pit 101 and the depression 4, so as to increase the connection strength between the intermediate yarn 1 and the outer covering yarn 3, so that the two outer covering yarns 3 can be more firmly fixed on the outside of the intermediate yarn 1, so as to enhance the tensile strength of the entire polyester composite yarn, and because the several are not held together by friction, they will not be scattered, and have good integrity.
[0029] 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 high-strength polyester composite yarn, characterized in that: The invention comprises an intermediate filament (1) and two outer sheath filaments (3) spirally wound on the outer side thereof, wherein the outer side of the intermediate filament (1) and the outer side of the outer sheath filament (3) are respectively fixedly connected with a connecting layer (2) and an outer sheath (5), wherein the connecting layer (2) and the outer sheath (5) are hot-melted into an integral structure, and the outer sheath (5) is hot-melted at the outermost side to form an outer sheath (6), and the melting points of the connecting layer (2) and the outer sheath (5) are lower than the melting points of the intermediate filament (1) and the outer sheath (3).
2. The high-strength polyester composite yarn according to claim 1, characterized in that: There are a plurality of pits (101) on the outer peripheral wall of the intermediate yarn (1), and the inner circle of the connecting layer (2) extends into and fills the pits (101).
3. The high-strength polyester composite yarn according to claim 1, characterized in that: The outer circle of the outer sheath wire (3) is recessed inward to form a plurality of recesses (4), and the inner circle of the outer sheath (5) extends to fill the recesses (4).
4. The high-strength polyester composite yarn according to claim 1, characterized in that: The cross-sectional area of the outer covering wire (3) is smaller than the cross-sectional area of the intermediate wire (1).
5. The high-strength polyester composite yarn according to claim 1, characterized in that: The outer covering yarn (3) and the intermediate yarn (1) are both made of polyester.
6. The high-strength polyester composite yarn according to claim 1, characterized in that: The connecting layer (2) and the outer covering layer (5) are both composed of a plurality of polypropylene powder particles.