CN101230511A - A kind of multi-different multifunctional polyester composite slub yarn and its production method - Google Patents

Abstract

The invention relates to a multi-different and multi-functional polyester composite slub yarn and a production method thereof. It needs to solve technical problems such as small use range of raw materials, weak and smooth bamboo joints, weak product bumps, and poor air permeability. The core yarn of the slub yarn is composed of several modified polyester filaments paralleled, and the slub skin layer is formed by reciprocating wrapping and winding of a single modified polyester filament. Its production method: the core yarn is pulled down from the pull-down point (5) through the pull-down yarn guide (2) to the box front yarn guide (3); the single filament is fed from another system and compared to the feed of the previous system. There is an overfeed rate of 40-70%; before the meeting point of the two mixed fibers, the opening is separated by the opening yarn guide (1), and the single filament with overfeeding is reciprocally wrapped on the surface of the core yarn to form a discontinuity Segmental skin-core bamboo structure.

Description

A kind of multi-different multifunctional polyester composite slub yarn and its production method

technical field

The invention relates to the field of textile fibers, in particular to a multi-different and multi-functional polyester composite slub yarn and a production method thereof.

Background technique

Polyester is a kind of chemical fiber clothing fabric raw material that is widely used in daily life. The biggest advantage of its fabric is that it has good wrinkle resistance and shape retention, and is suitable for outerwear. Generally, polyester fabrics have high strength and elastic recovery capabilities. It's strong, durable, wrinkle-resistant and easy-care. Good heat resistance, good light resistance, and good resistance to various chemicals. Acids and alkalis have little damage to it, and it is easy to dry after washing, and its wet strength hardly decreases, does not deform, has good washability and wearability, and its light resistance is better than natural fiber fabrics. Especially behind glass the light fastness is very good, almost on par with acrylic. However, compared with cotton fabrics, polyester fabrics are less hygroscopic, moisturizing, and breathable. They are easy to wear next to the skin and feel stuffy. At the same time, they are easy to be charged with static electricity and stained with dust, which affects the appearance and comfort, and has poor color absorption performance. With the development of society, the improvement of chemical fiber technology and the improvement of people's living standards, it is particularly important to improve the wearing comfort of polyester clothing. In recent years, various single functional fibers have come out one after another, which have endowed the fibers with a certain degree of functionality, but adding a variety of additives during the polymerization and spinning process will cause the loss of the functions of various additives, and poor spinnability, making it difficult to spin. Multi-functional polyester composite slub yarn product is a new type of composite yarn with several kinds of fibers as the functional carrier, which integrates multiple functions into one. In the future, it will be widely used in clothing fabrics and decorative fabrics.

Chinese patent document CN1664197A discloses a "production process and device for special-shaped material slub yarn", in which slub yarn base yarn cotton roving (1') and slub yarn slub polyester roving (8') are spun through FA506 Machine-spun special-shaped material slub yarn material; the polyester roving at the slub is passed through the yarn guide rod into the yarn guide bell mouth, and is drafted by the back roller (2′) into the newly added mixed bell mouth (6′); the slub yarn The base yarn cotton roving directly enters the newly added mixed bell through the guide rod; the slub yarn base yarn cotton roving and the polyester roving at the slub of the slub yarn drafted by the back roller enter the bell and then pass through the middle roller (3′ ) drafting, and then enters the front roller drafting (4') through the newly added cluster bell mouth; the special-shaped material slub yarn is spun out through the power transmission system device.

Chinese patent document CN1336453A discloses "a kind of intermittent spinning process and its yarn". The process is characterized in that the auxiliary fiber bundle (2″) output intermittently from the feeding roller (3″) merges with the main fiber bundle (1″) and enters the back and front rollers (4″), (5″) simultaneously, through It is formed by drafting and twisting; the feeding roller is controlled by a variable program controller (9″) to feed auxiliary fiber bundles intermittently. Thereby, the intermittent spun yarn is obtained, that is, the continuous main fiber bundle (1 ″) and the intermittent auxiliary fiber bundle (2 ″) are merged, and the yarn formed by drafting and twisting together.

Chinese patent document CN1648301A discloses "a kind of slub yarn, its spinning method and special spinning frame". The slub yarn includes joints and knots, which are adjacently arranged to form the main body of the yarn. The joints are formed by main yarn fibers, and the joints are formed by twisted main yarn fibers and auxiliary yarn fibers.

Although the above-mentioned background technology can form bamboo joints, it still has some deficiencies. One is that these methods cannot use filament raw materials, and the finished yarn strength used is low, and its fabric wear resistance is poor, and it is impossible to have different cross-section-different fiber-different dyeing-different functions. The 2nd, because this kind of slub yarn has no wrapping slub structure, the concavo-convex feeling of the fabric is not strong, and the air permeability is poor. The 3rd, this class slub yarn just realizes the size variation of product radial section shape fineness only, and slub is not firm, and slub is not smooth, is difficult to make hemp-like, wool-like style. Fourth, this type of slub yarn also needs to be treated with sizing, two-for-one twisting, etc. before being used on the machine.

Contents of the invention

The purpose of the present invention is to provide a polyester filament blended composite slub yarn with different cross-sections, different dyeing, different fibers and different functions and its production method, which solves the problem of small raw material use range and weak slub joints. , not smooth, the product is not strong in concave and convex, poor air permeability and other technical problems.

The multi-different and multi-functional polyester composite slub yarn of the present invention is coated with a discontinuous segmental slub cortex structure radially outside the core yarn, and is characterized in that the core yarn is composed of several modified polyester filaments and The slub cortex is formed by reciprocating wrapping and winding of a single modified polyester filament, and the non-slub part is composed of a single modified polyester filament used in the core yarn and the slub cortex.

Preferably, the core yarn contains 2-5 modified polyester filaments.

The length of bamboo joints and the spacing of bamboo joints can be regular or irregular. Preferably, the length of bamboo joints is 2-15 cm, and the density of bamboo joints is 4-10 pieces/m;

Preferably, the modified polyester filament is a functional polyester filament and/or its cross-section is a special-shaped structure. That is to say, the modified polyester filament can choose functional polyester filament, such as anti-ultraviolet, antibacterial and anti-corrosion, flame retardant, antistatic, etc.; it can also choose polyester filament with special-shaped cross-section, such as cross-section shape, trilobal shape , five-leaf shape, C-shape, etc., to improve moisture absorption and perspiration performance; polyester filaments with both functionality and special-shaped cross-section can also be selected. Using different raw material filament combinations, the finished product has different functional combinations. If the raw material polyester filament has cationic dye dyeability and high gloss performance, the composite yarn can be dyed with cationic dyes to present multiple colors. colorful effect.

The style and feel of the product of the present invention can imitate cotton, imitate hemp, imitate wool, and the product can be widely used in clothing fabrics, sportswear, and decorative cloth.

The method for producing multi-different and multi-functional polyester composite slub yarns of the present invention is characterized in that the production equipment has a double feeding system, and the fiber-mixing compounding method is twist, or the combination of twist and network, or the air-variable mixed fiber compounding method.

In the specific production method, the core yarn filaments are always fed in parallel from one system of the equipment, pulled down from the pull-down point to the yarn guide through the pull-down guide; a single modified polyester filament is fed from another system, passed through the opening Yarn guide, where the yarn guide and the core yarn are mixed together, and there is an overfeed rate of 40-70% (preferably 50-60%) relative to the feeding amount of the previous system; at the point where the two mixed fibers meet The opening is separated by the opening yarn guide before, and the single filament with overfeeding is reciprocally wrapped on the surface of the core yarn to form a discontinuous section-shaped sheath-core bamboo structure; the installation position of the pull-down yarn guide is the same as The normal travel path of the filaments forms a deflection angle α of 10-15°, and the vertical distance h from the pull-down point is 10-20 cm. The invention pulls down the core yarn, increases the length of the slub forming area, appropriately changes the process flow, increases the control range of the slub length, and ensures the running stability.

Since the size of the movable range of the open wire guide directly affects the length and style of the slub, as a preference, the stretchable range of the open wire guide brace is 0 (that is, the sliding section of the open wire guide brace is relative to the fixed section. shrink to stop) ~ 20cm. When the strut is retracted, the opening of the sheath yarn and the core yarn is reduced, reducing the maximum accumulation of the overfeed of the sheath yarn and the reciprocating wrapping and winding range of the sheath yarn along the core yarn. The slub structure is short, and when the pole is extended, the opening of the leather yarn and the core yarn is increased, the maximum accumulation of the leather yarn overfeeding and the length of the leather yarn reciprocating wrapping and winding along the core yarn are increased, forming The skin-core bamboo structure is long.

In a more specific manufacturing method of the present invention, several kinds of different cross-section-different fiber-different dyeing-different function polyester filaments are mixed and compounded, one of the special-shaped functional filaments forms the cortex of the slub structure, and the remaining several special-shaped functional filaments Filament and ply as the core yarn. The steps are as follows: firstly prepare the required polyester filaments with different cross-sections, different dyeing-different linear density-different functionalities, and then use a texturing machine with a double feeding system and can provide twist to the filaments, Multi-functional polyester composite slub yarns are produced by compounding and blending on two-for-one twisters or air-converting machines at a speed of 150-200 m/s to obtain composite slub yarns with skin-core structure with good winding and covering effects.

The functional polyester filament can be produced in one of the following ways: adding functional powder during the polymerization process to obtain functional polyester chips through copolymerization. Spinning on FDY equipment to produce functional polyester filaments. Use bright polyester chips. During the FDY spinning process, add functional masterbatches to make bright and anti-ultraviolet FDY through blending. After spinning, use The surface coating method is to apply functional additives to obtain light and anti-ultraviolet FDY.

Compared with the composite slub yarn in the past, the composite slub yarn of the present invention has the following advantages: 1. In addition to the uneven aesthetic feeling and special hand feeling of the fabric, since the raw material adopts modified polyester polyester, it has better dyeability. Performance, different cross section of raw materials - different dyeing - different monofilament denier. Due to the difference in the linearity of the monofilament, the shrinkage in boiling water between the monofilaments is different. Make the product form a fleece effect, soft to the touch, can have a fleece feel or form a pile, which is beneficial to the cotton-like and wool-like types. Various functions are well maintained and comprehensively reflected in the finished product. 2. The mixed fiber composite method can be selected in multiple ways, which broadens the application range of the composite yarn. The production of the method of the present invention requires simple equipment, as long as a down-drawing guide is installed, and a texturing machine, an air transformer, and a two-for-one twisting machine commonly used in the chemical fiber industry can be used to realize the production. It has significant economic and social benefits.

Description of drawings

Fig. 1 is a schematic diagram of the production method of the present invention.

Detailed ways

The present invention will be specifically described below by means of drawings and implementation. It must be pointed out that the following examples are only used to further illustrate the present invention, and should not be construed as limiting the protection scope of the present invention. Those skilled in the art can make some non-essential adjustments according to the content of the above invention.

Example 1

Manufacture various functional polyester filaments first:

100D/36F three-lobed special-shaped bright and flame-retardant FDY was prepared on FDY spinning equipment with flame-retardant modified polyester chips;

50D/24F cross cationic FDY was prepared on FDY spinning equipment with cationic modified polyester chips;

50D/36F five-lobed special-shaped bright and anti-ultraviolet FDY was prepared on FDY spinning equipment with anti-ultraviolet modified polyester chips.

In this example, the manufacture of multi-different and multi-functional polyester composite slub yarn:

As shown in Fig. 1, below the zero roller of the stretching false twist texturing machine, a pull-down yarn guide 2 is installed, which forms an angle α of 12° with the normal travel path of the yarn, and a vertical distance h of 10 cm from the pull-down point. Open wire guide strut 4 overhanging distance is 15cm.

A 100D/36F three-lobed special-shaped cross-section light flame-retardant FDY is fed from the zero roller (FR0) of the 33H texturing machine as the raw material for forming the slub cortex, the overfeed rate is 52.6%, and its travel path: zero roller FR0→opening Yarn guide 1 (fixed at the front end of open yarn guide support bar 4)→yarn guide 3→the surface of the core yarn between the pull-down yarn guide 2 and yarn guide 3 is wound into slubs→the first heating box→false twist Machine → second roller → second hot box → third roller → oiling roller → winding forming.

50D/24F cross-shaped cationic FDY and 50D/36F five-lobed special-shaped cross-section anti-ultraviolet FDY are fed from the first roller (FR1) as raw materials for forming slub core yarn; their travel path: first roller FR1→pull-down point 5→pull-down Yarn guide 2→wrapped to form slubs→yarn guide 3 merges with single yarn→first hot box→…→winding forming.

Before the meeting point of the two mixed fibers, they are separated by the pole wire guide 1 to form an opening, and they are converging at 2-3 places before the first hot box front wire guide 3 and are wound into knots. A single filament with overfeeding is reciprocally wound and covered in a certain range at 2-3 places due to the accumulation of overfeeding amount on the surface of the parallel strand to form a segmental skin-core bamboo structure, and the aggregated overfeeding amount is reduced at this time . When the accumulated overfeed amount is reduced to a certain extent due to the reciprocating winding wrapping, all the filaments are paralleled at the same time. The structure between the bamboo nodes is formed, and the overfeed amount begins to accumulate again in the process.

In this example, the vehicle speed is 150m/s, the setting temperature is 150°C, and the method of twist mixed fiber composite is adopted. The hemp-like polyester composite slub yarn with moisture absorption and perspiration, flame retardancy, UV resistance, bright luster and different dyeing characteristics is obtained. The slub cortex is a single 100D/36F three-lobed special-shaped cross-section bright and flame-retardant FDY, and the slub core yarn is 50D/24F cross-shaped cationic FDY and 50D/36F five-leaf special-shaped bright and anti-ultraviolet FDY. Some are three-lobed special-shaped cross-section light flame-retardant FDY, cross-shaped cationic FDY and five-leaf special-shaped light-resistant UV-resistant FDY parallel strands. The length of bamboo joints is 3 cm, and the density of bamboo joints is 6 pieces/m.

Example 2

Manufacture various functional polyester filaments first:

50D/36F five-lobed special-shaped bright and anti-ultraviolet FDY was prepared on FDY spinning equipment with modified polyester chips;

75D/24F cross-shaped cationic FDY was prepared on FDY spinning equipment with cationic modified polyester chips;

75D/24F zigzag special-shaped bright antistatic FDY was prepared on FDY spinning equipment with UV-resistant modified polyester chips.

In this example, the manufacture of multi-functional polyester composite slub yarn, the traveling path and knotting process of single yarn and core yarn are the same as Example 1:

Single polyester filament 75D/24F cross-shaped cationic FDY is fed from the zero roller of the air transformer as the raw material for the slub cortex, with an overfeed rate of 58.6%; Light antistatic FDY parallel ply is fed from one roller as raw material for slub core yarn. The speed is 200M/S. The setting temperature is 150°C, and the air variable mixed fiber composite method is adopted. A wool-like multi-differential multi-functional polyester composite slub yarn capable of moisture absorption and perspiration, anti-ultraviolet, dust-proof and anti-static, capable of over-dyeing with cationic dyes and different dyeing is obtained. The length of bamboo joints is 2 cm, and the density of bamboo joints is 8 pieces/m.

Example 3

Manufacture various functional polyester filaments first:

50D/36F five-lobed special-shaped bright and anti-ultraviolet FDY was prepared on FDY spinning equipment with modified polyester chips;

75D/24F cross-shaped cationic FDY was prepared on FDY spinning equipment with cationic modified polyester chips;

50D/24F zigzag special-shaped bright antistatic FDY was prepared on FDY spinning equipment with UV-resistant modified polyester chips.

In this example, the manufacture of multi-functional polyester composite slub yarn, the traveling path and knotting process of single yarn and core yarn are the same as Example 1:

Single polyester filament 75D/24F cross-shaped cationic FDY is fed from the two-for-one twister as a raw material for slub cortex, with an overfeed rate of 59.3%; 50D/24F sawtooth special-shaped bright antistatic FDY ply is fed from another feeding system as raw material for slub core yarn. The speed is 180M/S, no heat setting is carried out, and the mixed fiber composite method combining twist and network is adopted. A cotton-like multi-functional polyester composite slub yarn capable of moisture absorption and perspiration, anti-ultraviolet, dust-proof and anti-static, capable of over-dyeing with cationic dyes and different dyeing is obtained. The length of bamboo joints is 10cm, and the density of bamboo joints is 5 pieces/m.

Example 4

Manufacture various functional polyester filaments first

150D/36F three-lobed special-shaped bright and flame-retardant FDY was prepared on FDY spinning equipment with flame-retardant modified polyester chips;

50D/24F cross cationic FDY was prepared on FDY spinning equipment with cationic modified polyester chips;

50D/36F five-lobed special-shaped bright and anti-ultraviolet FDY was prepared on FDY spinning equipment with anti-ultraviolet modified polyester chips;

50D/24F zigzag special-shaped bright antistatic FDY was prepared on FDY spinning equipment with UV-resistant modified polyester chips;

50D/24F five-sided special-shaped bright antibacterial FDY was prepared on FDY spinning equipment with antibacterial modified polyester chips;

50D/36F "C" special-shaped far-infrared FDY was prepared on FDY spinning equipment with far-infrared modified polyester chips.

In this example, the manufacture of multi-functional polyester composite slub yarn, the traveling path and knotting process of single yarn and core yarn are the same as Example 1:

One piece of 150D/36F three-lobed special-shaped light flame-retardant FDY is fed from the zero roller of 33H texturing machine as raw material for forming slub cortex, with an overfeed rate of 56.7%; 50D/24F cross-type cationic FDY and 50D/36F five-leaf Special-shaped cross-section anti-ultraviolet FDY, 50D/24F sawtooth special-shaped light antistatic FDY, 50D/36F "C" special-shaped far-infrared FDY; 50D/24F five-sided special-shaped light antibacterial FDY. Five-strand parallel strands are fed from one roller as raw material for forming slub core yarn. The speed is 100M/S. The shaping temperature is 180°C, the twisted fiber composite method is adopted, and the open guide wire rod 4 is adjusted to the longest position, so that it can absorb moisture and sweat, flame retardant, anti-ultraviolet, and anti-static. Antibacterial, deodorant, warm, bright luster, different dyeing characteristics of linen-like polyester composite slub yarn with 15cm slub length and 4 slub density per m.

Claims (10)

1. A multi-functional polyester composite slub yarn, which is coated with a discontinuous segmental slub cortex structure in the radial direction outside the core yarn, and is characterized in that the core yarn is composed of several modified polyester filaments Composed of parallel strands, the slub cortex is formed by reciprocating wrapping and winding of a single modified polyester filament, and the part without slub is composed of a single modified polyester filament used in the core yarn and slub cortex. 2. The composite slub yarn according to claim 1, characterized in that said core yarn contains 2-5 modified polyester filaments. 3. The composite slub yarn according to claim 2, characterized in that the length of the slubs is 2-15 cm, and the density of the slubs is 4-10 pieces/m. 4. The composite slub yarn according to claim 1, 2 or 3, characterized in that the modified polyester filament is a functional polyester filament and/or its section is a special-shaped structure. 5. The production method of multi-different and multifunctional polyester composite slub yarn according to claim 1, 2 or 3, characterized in that the production equipment has a double-feeding system, and its mixed fiber compounding method is twist, or the combination of twist and network , or air variable mixed fiber composite. 6. the production method of composite slub yarn according to claim 5 is characterized in that the core yarn filament is fed in parallel from a system of equipment all the time, and is pulled down from the pull-down point (5) through the pull-down yarn guide (2) To the front yarn guide (3); a single modified polyester filament is fed from another system, passes through the open yarn guide (1), and the front yarn guide (3) merges with the core yarn mixed fiber, and is relatively The feeding amount of the previous system has an overfeed rate of 40-70%. Before the meeting point of the two mixed fibers, the opening is separated by the opening yarn guide (1), and the single filament with overfeeding reciprocates on the surface of the core yarn. Winding and covering to form a discontinuous section-shaped sheath-core bamboo structure; the installation position of the pull-down wire guide (2) is at an angle α of 10-15° to the normal travel path of the thread, and is perpendicular to the pull-down point The distance h is 10-20cm. 7. The production method of composite slub yarn according to claim 5, characterized in that the described overfeed rate is 50-60%; the retractable range of the open wire guide strut (4) is 0 ~20cm. 8. The method for producing composite slub yarn according to claim 5, characterized in that: low-speed production is adopted, and the production speed is 150-200 m/s. 9. The method for producing composite slub yarn according to claim 6, characterized in that: low-speed production is adopted, and the production speed is 150-200 m/s. 10. The production method of composite slub yarn according to claim 7, characterized in that: low-speed production is adopted, and the production speed is 150-200 m/s.

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