High-strength polyester FDY filament

Abstract

The utility model discloses a high-strength polyester FDY (fully drawn yarn) filament which comprises a core yarn and a wrapping yarn wound on the outer side of the core yarn. The core yarn comprises PTFE split film filaments, ultra-high molecular weight polyethylene filaments and hot melting filaments which are doubled and twisted; the wrapping yarn comprises a polyester FDY filament and a special-shaped section polyester filament which are spirally wound on the outer side of the core yarn in opposite directions, the section of the special-shaped section polyester filament comprises a linear fiber body, and first protrusions, second protrusions and third protrusions are symmetrically arranged on the two sides of the fiber body; the first protrusion and the third protrusion incline in the direction away from the second protrusion. The second protrusions are perpendicular to the fiber body. According to the utility model, the PTFE split film filaments are adopted, so that the filaments have thermal stability when being heated. The used ultra-high molecular weight polyethylene filaments provide good strength for the filaments. And the used hot melting filaments can enable the core filaments to be adhered to the wrapping filaments, so that the hair falling phenomenon of the wrapping filaments is reduced. And the polyester filament yarns with the special-shaped cross sections enable the formed fluff to have good upright property.

Description

Technical Field

[0001] The utility model relates to a high-strength polyester FDY filament, belonging to the technical field of chemical fiber filaments. Background Art

[0002] Polyester FDY, FULLY DRAWN YARN, fully drawn yarn, introduces stretching during the spinning process to obtain winding yarn with high orientation and medium crystallinity, which is fully drawn yarn. Conventional fully drawn yarns of polyester and nylon are both chemical fiber filaments. FDY fabrics feel smooth and soft, and are often used to weave imitation silk fabrics. It has a wide range of uses in clothing and home textiles.

[0003] Polyester FDY filaments are used in some pile fabrics, usually in the form of double-layer fabrics, so that the fabric thickness is thicker. And after the conventional circular cross-section FDY filaments are piled up, after being touched, the fluff will fall down and it is not easy to stand upright, and marks will be formed on one side of the fluff. If a single fabric layer is used for pile raising, a high-strength polyester FDY filament is required, and the fluff formed by the FDY filament must have good uprightness. Utility Model Content

[0004] The utility model aims to provide a high-strength polyester FDY filament. The used FDY filament has a special-shaped cross section and has good uprightness.

[0005] In order to solve the above technical problems, the purpose of the utility model is achieved as follows:

[0006] The utility model relates to a high-strength polyester FDY filament, comprising a core filament and a wrapping filament wound around the outside of the core filament; the core filament comprises a PTFE split film filament, an ultra-high molecular weight polyethylene filament and a hot-melt filament twisted in parallel; the wrapping filament comprises a polyester FDY filament and a special-section polyester filament spirally wound around the outside of the core filament in opposite directions, the cross section of the special-section polyester filament comprises a straight-line fiber main body, both sides of the fiber main body are symmetrically provided with a first protrusion, a second protrusion and a third protrusion; the first protrusion and the third protrusion are both inclined in a direction away from the second protrusion; the second protrusion is arranged perpendicular to the fiber main body.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: the polyester FDY filament is a fully matte polyester filament, and the cross-section is a parallelogram, including a long side and a short side, and the length of the long side is twice the length of the short side.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: the inclination angle of the first protrusion is 45-60°.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: the hot-melt filaments are ES filaments.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: the wrapping yarn also includes UV-proof polyester filaments.

[0011] The utility model has the following beneficial effects: the high-strength polyester FDY filament of the utility model adopts PTFE split film filament so that the filament has thermal stability when heated. The ultra-high molecular weight polyethylene filament used has good strength for the filament. The hot-melt filament used can make the core filament and the wrapping filament adhere to each other, thereby reducing the hair loss phenomenon. The polyester filament with a special-shaped cross section makes the fluff formed by it have good uprightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the cross-sectional structure of the high-strength polyester FDY filament involved in Example 1;

[0013] Figure 2 Schematic diagram of the cross-sectional structure of the polyester filament with a special cross-section involved in Example 1;

[0014] Figure 3 Schematic diagram of the cross-sectional structure of the polyester FDY filament involved in Example 1;

[0015] Figure 4 It is a schematic diagram of the cross-sectional structure of the high-strength polyester FDY filament involved in Example 2.

[0016] The markings in the figure are as follows: 1-PTFE split film filament; 2-ultra-high molecular weight polyethylene filament; 3-hot-melt filament; 4-polyester FDY filament; 5-special-section polyester filament; 51-fiber body; 52-first protrusion; 53-second protrusion; 54-third protrusion; 41-long side; 42-short side; 6-UV-proof polyester filament. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] Embodiment 1

[0019] Combination Figure 1 , Figure 2 and Figure 3, this embodiment is described in detail. A high-strength polyester FDY filament involved in this embodiment includes a core wire and a wrapping wire wound around the outside of the core wire. The core wire includes a PTFE split film filament 1, an ultra-high molecular weight polyethylene filament 2 and a hot-melt filament 3 twisted in parallel; the PTFE split film filament is a filament made of polytetrafluoroethylene and processed by a film splitting method. It has excellent breaking strength and uniform fineness. The PTFE split film filament 1 has the characteristics of high temperature resistance, non-hydrolysis, acid resistance, alkali resistance, oxidation resistance, and non-stickiness, so that the filament has good thermal stability, and the fabric prepared by it has dimensional stability when heated. The ultra-high molecular weight polyethylene filament 2 has high strength, so that the filament has high strength. And the hot-melt filament 3 used can be bonded to the adjacent fibers after the fabric prepared by the filament is heat-treated, so that the prepared fabric does not shed.

[0020] The wrapping yarn includes a polyester FDY filament 4 and a special-section polyester filament 4 spirally wound on the outside of the core yarn in opposite directions. The cross section of the special-section polyester filament 5 includes a straight-line fiber body 51, and the first protrusion 52, the second protrusion 53 and the third protrusion 54 are symmetrically arranged on both sides of the fiber body 51; the first protrusion 52 and the third protrusion 54 are inclined in a direction away from the second protrusion 53; the second protrusion 53 is arranged perpendicular to the fiber body 51. The fabric prepared by the filament involved in this embodiment has good uprightness after the wrapping yarn is raised. And the special-section polyester filament 5 has more grooves, which has a good moisture conduction effect.

[0021] Furthermore, the polyester FDY filament is a full-dull polyester filament, and the cross section is a parallelogram, including a long side and a short side, and the length of the long side is twice the length of the short side. The polyester fiber with the same cross section also has good uprightness.

[0022] Furthermore, the first protrusion has an inclination angle of 45-60°, and in this embodiment, 45° is selected.

[0023] Furthermore, the hot-melt filaments are ES filaments.

[0024] Embodiment 2

[0025] Combination Figure 4 The present embodiment is used for detailed description. The high-strength polyester FDY filament involved in the present embodiment is different from the embodiment 1 in that the wrapping yarn also includes an anti-ultraviolet polyester filament. The anti-ultraviolet polyester filament is flat.

[0026] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A high-strength polyester FDY filament, characterized in that: It includes a core wire and a wrapping wire wound around the outside of the core wire; the core wire includes PTFE split film filaments, ultra-high molecular weight polyethylene filaments and hot-melt filaments twisted in parallel; the wrapping wire includes polyester FDY filaments and special-section polyester filaments spirally wound around the outside of the core wire in opposite directions, the cross-section of the special-section polyester filament includes a straight-line fiber body, and the first protrusion, the second protrusion and the third protrusion are symmetrically arranged on both sides of the fiber body; the first protrusion and the third protrusion are inclined in the direction away from the second protrusion; the second protrusion is arranged perpendicular to the fiber body.

2. A high-strength polyester FDY filament according to claim 1, characterized in that: The polyester FDY filament is a fully matte polyester filament, and has a parallelogram cross section, including a long side and a short side, wherein the length of the long side is twice the length of the short side.

3. The high-strength polyester FDY filament according to claim 1, characterized in that: The first protrusion has an inclination angle of 45-60°.

4. The high-strength polyester FDY filament according to claim 1, characterized in that: The hot-melt filaments are ES filaments.

5. The high-strength polyester FDY filament according to claim 1, characterized in that: The wrapping yarn also includes UV-resistant polyester filaments.

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