CN211771683U - High-performance fine-denier polyester profiled fiber, fiber polymer and fabric - Google Patents

Abstract

The utility model belongs to the synthetic fiber field of making, concretely relates to fine denier dacron abnormal shape fibre of high performance, fibre polymer and fabric. The high-performance fine-denier polyester profiled fiber comprises a polyester fiber body, the cross section of the polyester fiber body is polygonal, and the monofilament titer of the polyester fiber body is not more than 0.8 dtex; the fiber polymer is formed by polymerizing the high-performance fine-denier polyester profiled fiber; the fabric is woven from the fiber polymer. The cross section of the fiber of the utility model is polygonal, which reduces the scattering of the fiber to the light and improves the brightness; the filament number of the fiber is not more than 0.8 dtex, so that the softness of the fiber is improved; regular fiber shape and improved spinnability.

Description

High-performance fine-denier polyester profiled fiber, fiber polymer and fabric

Technical Field

The utility model belongs to the synthetic fiber field of making, concretely relates to fine denier dacron abnormal shape fibre of high performance, fibre polymer and fabric.

Background

In the past, in clothing such as T-shirts, underwear, sportswear, mountaineering wear, and sportswear, cotton products have been preferred in view of appearance and texture. However, cotton products have some drawbacks, such as being heavier when wetted with water or sweat, and removing heat when the immersed sweat evaporates, thereby causing perspiration and coolness. Therefore, in recent years, products made of polyester fibers are widely marketed.

Polyester is a material with excellent performance, not only is an excellent choice for underwear, casual wear and mountaineering wear, but also is often blended or interwoven with other fibers to improve the strength and fastness of the fabric. Most of the polyester fibers are limited on the semi-dull polyester round hole fibers. Along with the improvement of living standard of people, the wearing concept of people is changed, the heat preservation and the beauty are improved to be comfortable, healthy, novel, artistic, creative and the like, especially, people have higher requirements on the aspects of texture, brightness, glossiness and the like of clothing fabrics, and the special-shaped modification of the polyester fibers becomes the development direction of the fibers.

Before, the special-shaped transformation of the polyester fiber mainly focuses on the moisture absorption and sweat release performance and the comfortable and warm-keeping function of the clothes. The moisture absorption and sweat releasing fiber utilizes the capillary phenomenon generated by the micro-grooves on the surface of the fiber and increases the surface area, so that sweat can rapidly migrate to the surface of the fabric and diffuse to achieve the purposes of moisture conduction and quick drying through the actions of wicking, diffusion, transmission and the like. The capillary action is increased by the fiber section profile, such as grooves generated by a leaf-shaped structure, so that the fabric has dry and sweat-releasing functions due to the wicking action generated by capillary channels on the fibers or among the fibers. It is generally a lobed structure to facilitate the formation of a grooved structure and to increase surface area. For the special-shaped transformation with comfortable and warm-keeping functions, the special-shaped hollow and fine denier are mainly adopted.

Along with the continuous requirements of people on the hand feeling, light sensation and comfort of textiles such as clothes and the like, the performance requirements of polyester yarns are also continuously improved. It is known that different radial cross sections of polyester fibers can generate different effects such as luster, light sensation and the like, and most of the existing radial cross sections of the polyester fibers are of circular planar structures, and the defect is that polyester yarns are not bright enough. Therefore, the bright, soft and bulky terylene fine denier fiber is a product expected by people

In the spinning process, the structure of the profile yarn is not favorable for smooth production, so that the filament fineness of general profile fibers is about 1dtex or more, and the softness of the fibers is influenced. The titer of the fibers in decitex (dtex) refers to the number of grams of 10000 meters in length. It can also be expressed in denier (D), i.e., the weight of 9000 meters of fiber length. The fine denier of the utility model refers to a fiber which is thinner than the conventional fiber, for example, less than 1dtex, which refers to the fineness of a single fiber. The specification of a tow composed of a plurality of single fibers is represented by the total fineness/number (f-number), for example, 78dtex/120f, and the fineness of the single fibers is 78 ÷ 120 ═ 0.65 dtex.

The prior art discloses a terylene semi-optical fine denier hollow POY fiber and a production method thereof, wherein the special-shaped structure is a cross section of the fiber made of semi-optical polyester melt and is in a herringbone structure with a hollow middle part, and the filament number of the fiber is 0.5 to 1 dtex; the prior art also discloses a polyester semi-gloss fine denier POY fiber and a production method thereof, wherein the special-shaped structure is a structure shaped like a Chinese character 'mi' or 'x', and the length-width ratio of the cross section of the fiber is 10: 1-15: 1; the filament number of the fiber is 0.5-1.5 dtex, so that good standing effect and moisture absorption effect are realized; the prior art also discloses a terylene semi-gloss superfine denier double-deformed-section POY fiber and a production method thereof, the terylene semi-gloss superfine denier double-deformed-section POY fiber is formed by mixing a U-shaped structure and a non-closed annular structure formed by connecting three arc strips which are not connected end to end, the terylene semi-gloss superfine denier double-deformed-section POY fiber which has high deformed degree, high oil content, excellent heat retention and fluffiness is achieved, and the heat retention and the fluffiness are better than the prior POY with a single deformed section; the prior art also discloses a profiled FDY polyester yarn, the cross section of which is a profiled structure, specifically, one end of a first semicircle is connected with one end of a first triangle, the other end of the first triangle is connected with one end of a second triangle, the other end of the second triangle is connected with one end of a second semicircle, the other end of the second semicircle is connected with one end of a straight line shape, the other end of the straight line shape is connected with the other end of the first semicircle to form a closed structure, the overall shape of the fiber is flat, the fiber has a hollow warm-keeping effect, and the cross section is provided with two triangles, which has a good gloss effect; the prior art also discloses a production method of the melt direct spinning flat profiled polyester industrial filament, wherein profiled fibers are processed by a spinneret plate with a spinneret orifice cross section in a special straight line shape, monofilaments are closely arranged, the flatness is improved, and the attractiveness after blade coating is also greatly improved.

The cross section structures of the disclosed polyester profiled fibers are the cross section structures, and the polyester fibers with polygonal fiber sections and fineness of less than 0.8 dtex are not involved, so that the requirements of high-performance fine denier profiled polyester fibers are met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a fine denier polyester heterotypic fibre of high performance, fibre polymer and fabric to solve current polyester fiber goods brilliance degree, glossiness, the not enough technical problem of compliance.

In order to solve the technical problem, the utility model provides a fine denier dacron abnormal shape fibre of high performance, include: a polyester fiber body; the cross section of the polyester fiber body is polygonal, and the filament number of the polyester fiber body is not more than 0.8 dtex.

Furthermore, the number of the sides of the polygon is 3-6.

Further, the polygon is a regular polygon.

Further, the fiber form of the polyester fiber body is pre-drawn yarn POY, fully drawn yarn FDY formed by chemical fiber drawing treatment, textured yarn DTY formed by chemical fiber texturing process, short fiber formed by drawing, curling and cutting, and sliver fiber formed by chemical fiber sliver process.

The utility model also provides a fibre polymer, the fibre polymer is formed by as before the polymerization of high performance fine denier dacron abnormal shape fibre.

The utility model also provides a fabric, the fabric is woven by the fibre polymer as before and is formed.

The utility model has the advantages that the fiber cross section is polygonal, thereby reducing the scattering of the fiber to the light and improving the brightness; the filament number of the fiber is not more than 0.8 dtex, so that the softness of the fiber is improved; regular fiber shape and improved spinnability.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a cross-sectional view of a pentagonal fiber of the present invention;

fig. 2 is a schematic view of a spinneret plate of a pentagonal cross-section component of the invention;

FIG. 3 is a cross-sectional view of a quadrilateral fiber of the present invention;

fig. 4 is a schematic view of a spinneret plate of the quadrangular cross-section component of the present invention;

fig. 5 is a cross-sectional view of a trilateral fiber of the present invention;

fig. 6 is a schematic view of the spinneret plate of the triangular cross-section assembly of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1, the present embodiment provides a high performance fine denier polyester profiled fiber, including: a polyester fiber body; the cross section of the polyester fiber body is polygonal, and the filament number of the polyester fiber body is not more than 0.8 dtex.

Wherein, the polyester fiber-forming high polymer used for manufacturing the polyester fiber body comprises aromatic polyester resin (for example, polyaromatic diacid glycol ester resin such as polyethylene terephthalate, polytrimethylene terephthalate), polybutylene terephthalate) or polyhexamethylene terephthalate; wholly aromatic polyester resins such as polyarylate; and liquid crystal polyester resins), and aliphatic polyester resins (for example, aliphatic polyesters and copolymers thereof such as polylactic acid, polyethylene succinate, polybutylene succinate adipate, hydroxybutyrate-hydroxyvalerate copolymers, or polycaprolactone, cationic polyesters, etc., which may be used alone or in a reasonable combination.

Specifically, a typical preparation method of the polyester fiber body is a melt spinning process, and the process can be described as follows:

preparation of fiber-forming polyester melt-accurate metering-cooling effect enhancement by spinning beam through spinning beam containing spinning assembly-spinneret orifice-circular blowing-cluster oiling- (hot roller drafting) - - (high speed) winding. Or further processing into other fiber forms, such as curling to obtain polyester low stretch yarn, drafting, curling and cutting to obtain polyester staple fiber, processing into profiled fine denier polyester top through top processing, and further compounding with other fiber materials according to the design requirements of products to obtain composite yarn for subsequent weaving.

In this embodiment, the fiber form of the polyester fiber body may be pre-drawn yarn (POY), or further processed by a texturing machine to obtain DTY yarn, or further drawn by hot roll to obtain Fully Drawn Yarn (FDY). For the FDY yarn, a one-step spinning draft method (primary winding) or a two-step draft method (secondary winding) may be used.

Specifically, the melt spinning process for manufacturing the polyester fiber bodies with different fiber forms can adopt the following processes:

dry slicing terylene, extruding by a screw extruder, spinning, cooling by circular blowing, oiling, guiding a yarn disc, winding at high speed, shaping POY (polyester pre-oriented yarn), texturing and shaping DTY (draw textured yarn);

dry polyester slicing, screw extruder, spinning, circular air blowing cooling, bundling and oiling, 2-3 groups of hot roller drafting, high-speed winding and special-shaped section FDY (one-time winding process);

thirdly, dry polyester slicing, a screw extruder, spinning, circular blowing cooling, oiling, a godet, winding, special-shaped POY (polyester pre-oriented yarn), drafting by a drafting machine, winding and special-shaped FDY (fully drawn yarn) yarn (secondary winding process).

Specifically, for example, a polyester macrogloss chip having a relative viscosity of about 0.6 is used; drying the slices to the moisture content of below 30ppm, and feeding the slices into a screw extruder with a heating function through a storage bin to enable the slices to be in a molten state to form a spinning melt; quantitatively pressing the spinning melt into a spinning assembly through a metering pump, and ejecting the spinning melt from an inner polygonal spinneret orifice on a spinneret plate; the length-diameter ratio of the spinneret orifice is 1.2-1.7; cooling by constant temperature and constant humidity circular air blowing; further cooling through a channel; oiling the cooled tows by an oiling roller; and winding at high speed to obtain pre-drawn yarn (POY). Or the cooled filament bundle oiled by the oiling roller is drafted and shaped by a first group of godet rollers and a second group of drafting rollers, the speed ratio (the ratio of the drawing multiple) of the first group of godet rollers to the second group of godet rollers is 1.4-2.5, and then the filament bundle is fed into a package by a third godet roller to obtain the FDY filament.

Wherein the working temperature of the screw extruder is 275-295 ℃; the working temperature of the spinning box body is 280-290 ℃; the working temperature of the circular air blower is 16-25 ℃; the air speed of the circular blowing is 0.45-0.85 m/s; the high-speed winding speed is 3500-5200 m/min.

Fig. 2 is a schematic view of the spinneret plate of the pentagonal cross-section component of the present invention.

In this embodiment, a production process for manufacturing the polyester fiber body with a fiber cross section in a pentagonal shape is taken as an example. The polyester super bright chips are adopted, the viscosity is 0.64, as shown in figure 5, a special-shaped spinneret plate with an inner regular pentagon spinneret hole is adopted, the spinning speed is 3800m/min, the POY specification is 84dtex/120f, the spinning is carried out by the process in the table 1, the production operation is stable, the package is good, and the physical indexes of the obtained special-shaped POY yarn are shown in the table 2. The DTY texturing specification of the special-shaped POY yarn is 70dtex/120f, and the physical index of the obtained DTY yarn is shown in Table 3. The special-shaped POY yarn is further drafted by a parallel drafting machine to obtain the fiber with the specification of 72dtex/120f, and the physical index of the obtained FDY yarn is shown in a table 4.

Table 1 spinning process conditions are as follows

Item	Unit of	Process for the preparation of a coating
			Temperature in zone 1 of screw	℃	265
Temperature of zone 2 of screw	℃	285
			Temperature in zone 3 of the screw	℃	290
Temperature in zone 4 of the screw	℃	290
			Temperature in zone 5 of the screw	℃	290
Temperature in zone 6 of the screw	℃	290
			Temperature of the tank	℃	290
Head pressure	bar	145
			Speed of circular blowing	m/s	0.6
Temperature of circular air blowing	℃	20±1
			Humidity of circular air blow	RH％	75±5
Winding speed	m/min	3800

TABLE 2 POY physical index of example 1

Item	Unit of	Measured value
			Fineness/size	dtex/f	84dtex/120f＝0.7dtex
Breaking strength	cN/dtex	3.5
			Elongation at break	％	85
Shrinkage in boiling water	％	11.5
			Oil content	％	0.45

TABLE 3 DTY physical index of example 1

TABLE 4 FDY physical index of example 1

Item	Unit of	Measured value
			Fineness of fiber	dtex/f	68dtex/120f＝0.57dtex
Breaking strength	cN/dtex	4.8
			Elongation at break	％	30
Oil content	％	0.30

As shown in fig. 1, the cross section of the obtained polyester fiber body is regular pentagon, the filament number of the obtained pre-drawn yarn POY is 0.7 dtex, the filament number of the fully drawn yarn FDY is 0.57 dtex, the filament number of the draw textured yarn DTY is 0.58 dtex, and the softness is improved.

In this embodiment, the difference between the manufacturing process of the polyester fiber body with the regular trilateral, regular quadrilateral and regular hexagon cross sections and the manufacturing process of the polyester fiber body with the regular pentagonal cross sections is only that different polygonal cross section component spinneret plates as shown in fig. 2, fig. 4 and fig. 6 are adopted, and details are not repeated herein.

Example 2

On the basis of example 1, this example 2 provides a fiber aggregate, which is polymerized from the high performance fine denier polyester profile fiber prepared in example 1.

Specifically, it may be used as a single fiber polymer or may be made into a fiber polymer form such as a composite yarn, a two-ply (twisted) yarn (double-twisted yarn (or filament)), a multifilament, and a composite twisted yarn.

Example 3

This example 3 provides, on the basis of example 1, a fabric woven from the fiber polymer made in example 2 and including, but not limited to, clothes, pants, and the like.

To sum up, the polygonal shape of the fiber cross section of the utility model reduces the scattering of the fiber to the light and improves the brightness; the filament number of the fiber is 0.8 dtex or less, so that the softness of the fiber is improved; regular fiber shape and improved spinnability.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (6)

1. A high-performance fine denier polyester profiled fiber is characterized by comprising:

a polyester fiber body;

the cross section of the polyester fiber body is polygonal, and the filament number of the polyester fiber body is not more than 0.8 dtex.

2. The high-performance fine denier polyester profiled fiber as claimed in claim 1,

the number of the polygon sides is 3-6.

3. The high-performance fine denier polyester profiled fiber as claimed in claim 1,

the polygon is a regular polygon.

4. The high performance fine denier polyester profiled fiber as claimed in any one of claims 1 to 3,

the fiber form of the fiber body is pre-drawn yarn POY or fully drawn yarn FDY or draw textured yarn DTY or short fiber or wool top fiber.

5. A fiber aggregate characterized by a fiber aggregate comprising a fiber,

the fiber aggregate is polymerized from the high performance fine denier polyester staple fiber of any of claims 1-4.

6. A fabric, characterized in that,

the fabric is woven from the fibrous polymer of claim 5.

Images