阅读说明：本技术 一种阻燃涤纶纱线及其生产工艺 (Flame-retardant polyester yarn and production process thereof ) 是由 高宝安 沈桥庆 陈琪 郭思明 于 2020-08-27 设计创作，主要内容包括：本发明公开了一种阻燃涤纶纱线,包括氨纶长丝、加强层和阻燃层,所述氨纶长丝为直芯结构,所述加强层设置在所述氨纶长丝的外侧,所述加强层包括若干根锦纶纱和若干根玻璃纤维纱,所述锦纶纱和所述玻璃纤维纱依次交替螺旋缠绕在所述氨纶长丝上,所述阻燃层设置在所述加强层的外侧,所述阻燃层包括若干根涤纶纱和若干根阻燃粘胶纤维纱,所述涤纶纱和所述阻燃粘胶纤维纱依次交替螺旋缠绕在所述加强层上；本发明还提供了一种阻燃涤纶纱线的生产工艺。本发明的阻燃涤纶纱线的强度高和韧性好,具备良好的强度和抗拉伸性能,可抑制燃烧,具备良好的阻燃性能；本发明的阻燃涤纶纱线的生产工艺简单,生产效率高,可用于大规模的纱线加工。(The invention discloses a flame-retardant polyester yarn, which comprises a spandex filament, a reinforcing layer and a flame-retardant layer, wherein the spandex filament is of a straight core structure, the reinforcing layer is arranged on the outer side of the spandex filament and comprises a plurality of nylon yarns and a plurality of glass fiber yarns, the nylon yarns and the glass fiber yarns are sequentially and alternately spirally wound on the spandex filament in turn, the flame-retardant layer is arranged on the outer side of the reinforcing layer, the flame-retardant layer comprises a plurality of polyester yarns and a plurality of flame-retardant viscose yarns, and the polyester yarns and the flame-retardant viscose yarns are sequentially and alternately spirally wound on the reinforcing layer in turn; the invention also provides a production process of the flame-retardant polyester yarn. The flame-retardant polyester yarn disclosed by the invention is high in strength and good in toughness, has good strength and tensile resistance, can inhibit combustion, and has good flame-retardant property; the flame-retardant polyester yarn disclosed by the invention is simple in production process and high in production efficiency, and can be used for large-scale yarn processing.)

1. A flame-retardant polyester yarn is characterized by comprising:

the spandex filament (1) is of a straight core structure;

the reinforcing layer (2) is arranged on the outer side of the spandex filament (1), the reinforcing layer (2) comprises a plurality of nylon yarns (3) and a plurality of glass fiber yarns (4), and the nylon yarns (3) and the glass fiber yarns (4) are sequentially and alternately spirally wound on the spandex filament (1);

flame-retardant layer (5), flame-retardant layer (5) set up the outside of enhancement layer (2), flame-retardant layer (5) are including a plurality of dacron yarns (6) and a plurality of fire-retardant viscose yarn (7), dacron yarn (6) with fire-retardant viscose yarn (7) spiral winding in turn is in on enhancement layer (2).

2. The flame-retardant polyester yarn according to claim 1, wherein: the number ratio and the diameter ratio of the nylon yarns (3) to the glass fiber yarns (4) are both 1:1, and the spiral winding directions of the nylon yarns (3) and the glass fiber yarns (4) are the same.

3. The flame-retardant polyester yarn according to claim 1, wherein: the number of the nylon yarn (3) is 20-40 English, the fineness of the fiber of the nylon yarn (3) is 1.5-2D, and the length of the fiber is 20-40 mm.

4. The flame-retardant polyester yarn according to claim 1, wherein: the number of the glass fiber yarn (4) is 20-40 English, the fineness of the fiber of the glass fiber yarn (4) is 1-3D, and the length of the fiber is 12-20 mm.

5. The flame-retardant polyester yarn according to claim 1, wherein: the number ratio and the diameter ratio of the polyester yarns (6) to the flame-retardant viscose yarns (7) are both 1:1, and the spiral winding directions of the polyester yarns (6) and the flame-retardant viscose yarns (7) are the same.

6. The flame-retardant polyester yarn according to claim 1, wherein: the number of the polyester yarns (6) is 30-60 English, the fineness of fibers of the polyester yarns (6) is 2-3D, and the length of the fibers is 30-40 mm.

7. The flame-retardant polyester yarn according to claim 1, wherein: the number of the flame-retardant viscose yarn (7) is 30-60 English, the fineness of the fiber of the flame-retardant viscose yarn (7) is 1.5-2D, and the length of the fiber is 35-40 mm.

8. The production process of the flame-retardant polyester yarn is characterized by comprising the following steps of:

s1, preparing needed spandex filament (1), polyamide yarn (3), glass fiber yarn (4), polyester yarn (6) and flame-retardant viscose yarn (7), cleaning and disinfecting all the yarns, and drying the yarns;

s2, sequentially and alternately arranging the nylon yarns (3) and the glass fiber yarns (4) on the outer side of the spandex filament (1), forming a reinforcing layer (2) outside the spandex filament (1) after twisting, and controlling the speed of a front roller, the drafting multiple of a rear zone and the total drafting multiple to obtain a coarse yarn;

s3, sequentially and alternately arranging the polyester yarns (6) and the flame-retardant viscose yarns (7) on the outer side of the reinforcing layer (2), twisting to obtain a flame-retardant layer (5) outside the reinforcing layer (2), and controlling the speed of a front roller, the drafting multiple of a rear zone and the total drafting multiple to obtain the flame-retardant polyester yarns;

s4, shaping the flame-retardant polyester yarn by adopting a vacuum steam yarn pot;

and S5, dropping the shaped flame-retardant polyester yarn into cone yarn by using a doffer to obtain the flame-retardant polyester yarn cone yarn.

9. The production process of the flame-retardant polyester yarn according to claim 8, characterized in that: the speed of the front roller in the S2 is 300-340r/min, the drafting multiple of the rear zone is 1.2-1.3 times, and the total drafting multiple is 7-8 times; the speed of the front roller in the S3 is 160-200r/min, the drafting multiple of the rear zone is 2-4 times, and the total drafting multiple is 20-36 times.

10. The production process of the flame-retardant polyester yarn according to claim 8, characterized in that: the rotating speed of the doffing machine in the S5 is 600-800 r/min.

Technical Field

The invention relates to the technical field of yarns, in particular to a flame-retardant polyester yarn and a production process of the flame-retardant polyester yarn.

Background

The polyester yarn is a yarn spun by taking polyester as a raw material, the polyester is a fiber prepared by spinning a polymer, and the polyester yarn is a fiber produced by taking polyethylene terephthalate as a raw material, which is called PET fiber for short and is commonly called polyester. By "yarn", it is meant the collective designation of "yarn" and "thread", as it is commonly referred to, as defined in the clothing materials science, as follows: "yarn" is an elongated object formed by arranging a plurality of short fibers or filaments in an approximately parallel state and twisting them by rotation in the axial direction to have a certain strength and linear density; and "thread" is a strand formed by twisting two or more single yarns. The yarn is a fine yarn (usually used as a raw material for weaving) obtained by elongating and twisting a fiber such as cotton, wool, hemp, chemical fiber, etc., and a plurality of fine yarns (called a yarn) obtained by twisting a fine yarn material such as cotton, hemp, silk, wool, etc.

Although the existing polyester yarns have the flame retardant effect, the fabric strength and the tensile resistance are poor, and the flame retardant effect of the fabric with the good strength and the good tensile resistance is influenced.

Disclosure of Invention

The invention aims to provide a flame-retardant polyester yarn and a production process thereof, the flame-retardant polyester yarn provided by the invention can be used for enhancing the strength and toughness of the flame-retardant polyester yarn by arranging the reinforcing layer made of the polyamide yarn and the glass fiber yarn, so that the flame-retardant polyester yarn has good strength and tensile resistance, and the flame-retardant layer made of the polyester yarn and the flame-retardant viscose yarn can inhibit the combustion of the flame-retardant polyester yarn, so that the flame-retardant polyester yarn has good flame retardance; the flame-retardant polyester yarn disclosed by the invention is simple in production process and high in production efficiency, and can be used for large-scale yarn processing to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a flame retardant polyester yarn comprising:

the spandex filament is of a straight core structure;

the reinforcing layer is arranged on the outer side of the spandex filament and comprises a plurality of nylon yarns and a plurality of glass fiber yarns, and the nylon yarns and the glass fiber yarns are sequentially and alternately spirally wound on the spandex filament;

the flame-retardant layer, the flame-retardant layer sets up the outside of enhancement layer, the flame-retardant layer includes a plurality of dacron yarns and a plurality of fire-retardant viscose yarn, the dacron yarn with fire-retardant viscose yarn spiral winding in turn is in turn on the enhancement layer.

Preferably, the number ratio and the diameter ratio of the nylon yarn to the glass fiber yarn are both 1:1, and the spiral winding directions of the nylon yarn and the glass fiber yarn are the same.

Preferably, the number of the nylon yarns is 20-40 English, the fineness of the fibers of the nylon yarns is 1.5-2D, and the length of the nylon yarns is 20-40 mm.

Preferably, the number of the glass fiber yarn is 20-40 English, the fineness of the fiber of the glass fiber yarn is 1-3D, and the length of the fiber of the glass fiber yarn is 12-20 mm.

Preferably, the number ratio and the diameter ratio of the polyester yarns to the flame-retardant viscose yarns are both 1:1, and the spiral winding directions of the polyester yarns and the flame-retardant viscose yarns are the same.

Preferably, the number of the polyester yarns is 30-60 English, the fineness of the fibers of the polyester yarns is 2-3D, and the length of the fibers is 30-40 mm.

Preferably, the number of the flame-retardant viscose yarn is 30-60 English, the fineness of the fiber of the flame-retardant viscose yarn is 1.5-2D, and the length of the fiber is 35-40 mm.

The invention also provides a production process of the flame-retardant polyester yarn, which comprises the following steps:

s1, preparing needed spandex filament, nylon yarn, glass fiber yarn, polyester yarn and flame-retardant viscose yarn, cleaning and disinfecting all the yarns, and drying the yarns;

s2, sequentially and alternately arranging polyamide yarns and glass fiber yarns on the outer side of the spandex filament, forming a reinforcing layer outside the spandex filament after twisting, and controlling the speed of a front roller, the drafting multiple of a rear zone and the total drafting multiple to obtain coarse yarns;

s3, sequentially and alternately arranging the polyester yarns and the flame-retardant viscose yarns on the outer side of the reinforcing layer, twisting to obtain a flame-retardant layer outside the reinforcing layer, and controlling the speed of the front roller, the drafting multiple of the rear zone and the total drafting multiple to obtain the flame-retardant polyester yarns;

s4, shaping the flame-retardant polyester yarn by adopting a vacuum steam yarn pot;

and S5, dropping the shaped flame-retardant polyester yarn into cone yarn by using a doffer to obtain the flame-retardant polyester yarn cone yarn.

Preferably, the speed of the front roller in S2 is 300-340r/min, the draft multiple of the rear zone is 1.2-1.3 times, and the total draft multiple is 7-8 times; the speed of the front roller in the S3 is 160-200r/min, the drafting multiple of the rear zone is 2-4 times, and the total drafting multiple is 20-36 times.

Preferably, the rotation speed of the doffing machine in S5 is 600-800 r/min.

Compared with the prior art, the invention has the beneficial effects that:

the flame-retardant polyester yarn provided by the invention has the advantages that the strength and toughness of the flame-retardant polyester yarn can be enhanced by arranging the reinforcing layer made of the polyamide yarn and the glass fiber yarn, so that the flame-retardant polyester yarn has good strength and tensile resistance; the flame-retardant polyester yarn disclosed by the invention is simple in production process and high in production efficiency, and can be used for large-scale yarn processing.

Drawings

FIG. 1 is a schematic structural diagram of a flame-retardant polyester yarn of the present invention;

FIG. 2 is a flow chart of a production process of the flame-retardant polyester yarn of the invention.

In the figure: 1. spandex filament; 2. a reinforcing layer; 3. nylon yarn; 4. a glass fiber yarn; 5. a flame retardant layer; 6. polyester yarn; 7. flame-retardant viscose yarn.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.