Fly fishing line with composite structure core wire
By employing a composite structure of braided outer and middle inner layers in the fly fishing line, and utilizing a parallel composite core line design, the problem of high and unstable core line elongation is solved, achieving a fly fishing line effect with low elongation and high strength.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUSIDA FISHING TACKLE LIANYUNGANG
- Filing Date
- 2025-05-09
- Publication Date
- 2026-05-12
AI Technical Summary
Existing fly fishing lines have a high and unstable core elongation rate, which affects the mechanical strength and performance of the line.
It adopts a composite structure of braided outer layer and middle inner layer, in which the middle inner layer uses parallel composite core yarn, and the inner layer monofilament or yarn has a straight parallel structure. The elongation rate can be precisely controlled through the composite core yarn structure.
This results in a low elongation rate for finished fly fishing lines, solving the problem of unstable elongation caused by traditional braided lines, and improving the mechanical strength and stability of the line.
Smart Images

Figure CN224227328U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fly fishing line technology, specifically a fly fishing line with a composite core line. Background Technology
[0002] Fly fishing lines typically consist of two parts: the core line and the coating. The core line is the basic structure of the fly fishing line, mainly responsible for providing mechanical strength and supporting the adhesion of the coating material. In current fly fishing products, the core line is usually composed of monofilament line, braided line, etc., both of which have a relatively high elongation rate. Although the elongation rate of the finished line can be reduced by adjusting the process, it is relatively complex and slightly more expensive.
[0003] The strength and elongation of fly fishing lines are mainly determined by the characteristics of the core line. Braided lines, due to their pitch and the need to maintain roundness, generally have higher elongation, or their elongation may be unstable. Utility Model Content
[0004] The purpose of this invention is to provide a fly fishing line with a composite core to solve the problems in the prior art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a fly fishing line with a composite core, comprising a braided outer layer and an inner middle layer, wherein the outer side of the inner middle layer is wrapped with the braided outer layer, and the inner middle layer uses parallel composite cores; the inner middle layer uses parallel composite cores because the inner layer monofilaments or yarns are not braided, are straight and parallel, and have a relatively low elongation rate, thus achieving the effect of low elongation rate of the finished fly fishing line, or at least low elongation rate under low tension; the composite core structure achieves precise control of elongation rate, solving the problem of unstable elongation caused by the pitch of traditional braided lines.
[0006] Preferably, the parallel composite core wire uses a single filament or multiple filaments.
[0007] Preferably, the parallel composite core yarn is made of single-strand yarn or multi-strand yarn.
[0008] Preferably, the parallel composite core wire adopts a twisted inner layer.
[0009] Preferably, the parallel composite core yarn is made of parallel yarn pre-coated with adhesive.
[0010] Compared with the prior art, the beneficial effects of this utility model are: the middle inner layer adopts parallel composite core line, because the inner layer monofilament or yarn is not braided, but straight and parallel, and the elongation rate is relatively low, so as to achieve the effect of low elongation rate of finished fly fishing line, or at least low elongation rate under low tension; the elongation rate is precisely controlled by the composite core line structure, which solves the problem of unstable elongation caused by the pitch of traditional braided line. Attached Figure Description
[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0012] Figure 1 This is a schematic diagram of the structure of this utility model.
[0013] In the diagram: 1. Outer layer of braided yarn; 2. Inner layer. Detailed Implementation
[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.
[0015] Please see Figure 1 In this embodiment of the invention, a fly fishing line with a composite core includes a braided outer layer 2 and an inner middle layer 1. The outer side of the inner middle layer 1 is wrapped with the outer braided outer layer 2. The inner middle layer 1 uses parallel composite core wires. Because the inner layer monofilaments or yarns are not braided, they are straight and parallel, resulting in a relatively low elongation rate. This achieves the effect of low elongation rate of the finished fly fishing line, or at least low elongation rate under low tension. The composite core wire structure enables precise control of elongation rate, solving the problem of unstable elongation caused by the pitch of traditional braided lines. It is compatible with various low-elongation materials and adapts to the needs of different fishing methods.
[0016] The parallel composite core wire uses a single filament or multiple filaments.
[0017] The parallel composite core yarn is made of single-strand yarn or multi-strand yarn.
[0018] The parallel composite core wire adopts a twisted inner layer.
[0019] The parallel composite core yarn is made by pre-coating parallel yarns with adhesive.
[0020] The working principle of this invention is as follows: because the inner monofilament or yarn is not woven, but is straight and parallel, the elongation rate is relatively low, thus achieving the effect of low elongation rate of the finished fly fishing line, or at least low elongation rate under low tension.
[0021] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A fly fishing line with a composite core, characterized in that: It includes a braided outer layer (2) and an inner middle layer (1), wherein the outer side of the inner middle layer (1) is wrapped with the braided outer layer (2), and the inner middle layer (1) is made of parallel composite core wire.
2. The fly fishing line with a composite core wire according to claim 1, characterized in that: The parallel composite core wire uses a single filament or multiple filaments.
3. A fly fishing line with a composite core wire according to claim 1, characterized in that: The parallel composite core yarn is made of single-strand yarn or multi-strand yarn.
4. A fly fishing line with a composite core wire according to claim 1, characterized in that: The parallel composite core wire adopts a twisted inner layer.
5. A fly fishing line with a composite core wire according to claim 1, characterized in that: The parallel composite core yarn is made by pre-coating parallel yarns with adhesive.