Polyester yarn with flame-retardant function

Abstract

The polyester silk with the flame retardant function comprises inner layer yarn, reinforcing yarn and outer layer yarn, the reinforcing yarn is arranged between core yarn and wrap yarn, the outer layer yarn comprises a plurality of special-shaped polyester fiber monofilaments, each special-shaped polyester fiber monofilament comprises a monofilament body, a groove is formed in the side wall of each monofilament body, and the inner layer yarn and the outer layer yarn are arranged in the groove. A containing cavity is formed between every two adjacent grooves, a flame-retardant coating is arranged on the outer side of the outer layer yarn, and the bottom end of the flame-retardant coating extends into the containing cavity. After the technical scheme is adopted, the flame-retardant effect of the polyester yarn with the flame-retardant function is greatly improved, and meanwhile it is guaranteed that the flame-retardant coating can be firmly connected with the outer layer yarn; the blended polyester yarn has better flame retardance, so that the yarn can be conveniently used for manufacturing flame-retardant fabric, and the flame retardance of the fabric made of the blended polyester yarn is greatly improved.

Description

Technical Field

[0001] The utility model relates to a polyester filament with a flame retardant function. Background Art

[0002] Polyester fiber, also known as polyester fiber, is a fiber obtained by spinning a polyester formed by polycondensation of organic dibasic acid and dibasic alcohol. As an important raw material in the textile industry, polyester fiber has largely alleviated the shortage of natural fibers. Moreover, due to its excellent wrinkle resistance, elasticity, dimensional stability, abrasion resistance, non-mildewing and non-moth-eating properties, resistance to weak acids and weak bases, excellent textile properties (spinnability) and wearing properties, etc., it has a very wide range of uses.

[0003] However, the flame retardant effect of the polyester filament products on the market is not good, so they are prone to burning when encountering a fire source, thus posing a potential danger threat to the human body. Content of the Utility Model

[0004] In view of the above problems, the utility model provides a polyester filament with a flame retardant function.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is: a polyester filament with a flame retardant function, including an inner layer yarn, a reinforcing yarn and an outer layer yarn. The reinforcing yarn is arranged between the core yarn and the covering yarn. The outer layer yarn includes a plurality of profiled polyester fiber filaments. The profiled polyester fiber filament includes a filament main body, and grooves are arranged on the side wall of the filament main body. An accommodating cavity is formed between two adjacent grooves. A flame retardant coating is arranged on the outer side of the outer layer yarn, and the bottom end of the flame retardant coating extends into the accommodating cavity.

[0006] Preferably, the grooves on both sides of the cross section of the profiled polyester fiber filament are of a structure that gradually widens from the middle to both ends.

[0007] Preferably, the length of the upper side of the cross section of the profiled polyester fiber filament is less than the length of the lower side.

[0008] Preferably, the reinforcing yarn includes a core layer and a third winding line spirally wound outside the core layer. The third winding line is formed by twisting a plurality of Lycra fibers.

[0009] Preferably, the core layer is formed by cross-twisting a first winding line and a second winding line. The first winding line is formed by twisting a plurality of pearl fibers, and the second winding line is formed by twisting a plurality of flame retardant acrylic fibers.

[0010] From the above description of the structure of the utility model, compared with the prior art, the utility model has the following advantages:

[0011] 1. A polyester filament with flame retardant function provided by the present utility model has an outer layer yarn composed of several profiled polyester fiber filaments. Grooves are provided on both sides of each profiled polyester fiber filament, and an accommodation cavity is formed between two adjacent grooves. A flame retardant coating is provided on the outer side of the outer layer yarn. That is, the setting of the accommodation cavity can increase the contact area of the flame retardant coating, greatly improving the flame retardant effect of the polyester filament, and at the same time ensuring that the flame retardant coating can be firmly connected to the outer layer yarn.

[0012] 2. A polyester filament with flame retardant function provided by the present utility model contains flame retardant fibers on the reinforcing yarn, making the blended polyester filament have better flame retardant performance, so that the yarn is convenient for making flame retardant fabrics, greatly improving the flame retardancy of the fabrics made of the blended polyester filament. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings constituting a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0014] Figure 1 is a schematic structural diagram of a polyester filament with flame retardant function of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the inner layer yarn of a polyester filament with flame retardant function of the present utility model;

[0016] Figure 3 is a schematic structural diagram of the reinforcing yarn of a polyester filament with flame retardant function of the present utility model;

[0017] Figure 4 is a schematic structural diagram of the profiled polyester fiber filament of a polyester filament with flame retardant function of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0019] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0021] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0022] Embodiment

[0023] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , a polyester filament with a flame retardant function, comprising an inner layer yarn 1, a reinforcing yarn 2, and an outer layer yarn. The reinforcing yarn 2 is disposed between the core yarn and the covering yarn. The outer layer yarn includes a plurality of profiled polyester fiber monofilaments. The profiled polyester fiber monofilament includes a monofilament body 3. A groove 31 is disposed on the side wall of the monofilament body 3. An accommodating cavity 34 is formed between two adjacent grooves 31. A flame retardant coating 4 is disposed on the outer side of the outer layer yarn, and the bottom end of the flame retardant coating 4 extends into the accommodating cavity 34. With this structure, the flame retardant effect of the polyester filament is greatly improved, and at the same time, it is ensured that the flame retardant coating 4 can be relatively firmly connected to the outer layer yarn; the polyester fiber enables the yarn to have better elastic resilience, thus facilitating the subsequent processing of the yarn.

[0024] On both sides of the cross-section of the profiled polyester fiber monofilament, the grooves 31 are structured to gradually widen from the middle to both ends; the length of the upper side 32 of the cross-section of the profiled polyester fiber monofilament is less than the length of the lower side 33. With this structure, the contact area between the flame-retardant coating 4 and the outer yarn can be further increased.

[0025] The reinforcing yarn 2 includes a core layer 21 and a third winding line 22 spirally wound outside the core layer 21. The third winding line 22 is formed by twisting a number of Lycra fibers; the core layer 21 is formed by the twisted intersection of a first winding line 211 and a second winding line 212. The first winding line 211 is formed by twisting a number of pearl fibers, and the second winding line 212 is formed by twisting a number of flame-retardant acrylic fibers. With this structure, due to the good resilience and wear resistance of Lycra fibers, the anti-breaking ability of the yarn can be further improved; and by utilizing the characteristic of pearl fibers to absorb ultraviolet rays, the obtained yarn has excellent ultraviolet resistance; in addition, the flame-retardant acrylic fibers have good flame-retardant properties, fully ensuring the flame-retardant effect of the obtained yarn.

[0026] In use, the outer yarn is composed of a number of profiled polyester fiber monofilaments. On both sides of each profiled polyester fiber filament, there are grooves 31, and an accommodation cavity 34 is formed between two adjacent grooves 31. And a flame-retardant coating 4 is provided on the outside of the outer yarn. That is, the setting of the accommodation cavity 34 can increase the contact area of the flame-retardant coating 4, greatly improving the flame-retardant effect of the polyester filament, and at the same time ensuring that the flame-retardant coating 4 can be relatively firmly attached to the outer yarn; by including flame-retardant fibers in the reinforcing yarn 2, the blended polyester filament has better flame-retardant properties, thus facilitating the use of the yarn for making flame-retardant fabrics and greatly improving the flame-retardancy of the fabrics made of the blended polyester filament.

[0027] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A flame retardant polyester yarn, characterized in that: The invention comprises an inner yarn, a reinforcing yarn and an outer yarn, wherein the reinforcing yarn is arranged between the core yarn and the covering yarn, the outer yarn comprises a plurality of shaped polyester fiber monofilaments, the shaped polyester fiber monofilaments comprise a monofilament body, a groove is arranged on the side wall of the monofilament body, a receiving cavity is formed between two adjacent grooves, a flame retardant coating is arranged on the outer side of the outer yarn, and the bottom end of the flame retardant coating extends into the receiving cavity.

2. The flame-retardant polyester yarn according to claim 1, characterized in that: The grooves on both sides of the cross section of the special-shaped polyester fiber monofilament are of a structure that gradually widens from the middle to both ends.

3. The flame-retardant polyester yarn according to claim 2, characterized in that: The length of the upper side of the cross section of the shaped polyester fiber monofilament is smaller than the length of the lower side.

4. The flame-retardant polyester yarn according to claim 1, characterized in that: The reinforcing yarn comprises a core layer and a third winding thread spirally wound on the outer side of the core layer, wherein the third winding thread is formed by twisting a plurality of Lycra fibers.

5. The flame-retardant polyester yarn according to claim 4, characterized in that: The core layer is formed by twisting a first winding wire and a second winding wire, wherein the first winding wire is twisted by a plurality of pearl fibers, and the second winding wire is twisted by a plurality of flame-retardant acrylic fibers.

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