CN105239236A - Chenille yarn and production method - Google Patents

Abstract

The invention discloses a production method of chenille yarn. The chenille yarn is prepared by using a loom, and the chenille yarn is formed by plying on-line through a twisting machine. , the feather yarn is fed in the latitudinal direction between the openings of the two core wires, and the two core wires are guided by the twisted heddle to form a knot for the feather yarn, and the feather yarn is consolidated to form a feather blank yarn; the adjacent cores in the feather blank yarn are cut The feather thread between the threads forms the chenille yarn, and two or three adjacent chenille yarns are introduced into the twisting machine through the guide hook to prepare the chenille yarn. Compared with the prior art, the present invention has the following advantages: 1. the chenille yarn of the present invention can reduce the filtration resistance and improve the air filtration efficiency; washing problem.

Description

A kind of chenille yarn and production method thereof

technical field

The invention relates to the technical fields of air purification and textile, in particular to a chenille yarn for air purification and a production method thereof.

Background technique

As one of the finished products of yarn, textiles are widely used in people's daily life. With the continuous improvement of the people's requirements for the quality of life, the requirements for textiles are also getting higher and higher. Among them, the production material of textiles is the biggest bottleneck restricting the development of high-demand textiles. In the prior art, there is a kind of chenille yarn to make textiles. Form, and cut the thread through separately. Due to the limited twisting and clamping force of the two core threads, the textiles made of the chenille yarn tend to loosen and lose hair during the washing process, resulting in the problem that it cannot be washed multiple times. In the prior art The core thread of high-quality chenille yarn is made of twisted acrylic yarn as raw material, and the feather yarn is cut into short feathers from viscose yarn as raw material. It is widely used in the fields of home textiles and knitted garments. The fabric that adopts common chenille yarn to weave generally gets its decorative effect more, and its comfortableness aspect is relatively poor. Rarely used for air filtration purposes.

After China experienced the "soot-type pollution" brought about by the industrial revolution in the 18th century and the "photochemical smog pollution" brought about by the petroleum and automobile industries in the 19th century, modern people are experiencing "severe PM2.5-type smog" with Chinese characteristics. The third pollution period marked by "smog air pollution". Now people's living environment is getting worse and worse. The endless industrial exhaust gas and the ubiquitous automobile exhaust have led to increasingly serious air pollution. Hazy weather and PM2.5 have warned people of the serious impact of air pollution. The process of industrialization has increasingly stringent requirements for air filters, such as clean workshops, clean workshops, laboratories, and clean rooms for medical, hygiene, food, chemical, and electronics, or dust-proof for electronic, mechanical, and communication equipment.

Air filters are generally divided into primary-efficiency air filters, medium-efficiency air filters, high-efficiency air filters, and sub-high-efficiency air filters. Filter materials include non-woven fabrics, nylon mesh, activated carbon filter cotton, metal hole mesh, etc., and protective meshes include double-sided plastic-sprayed wire mesh and double-sided galvanized wire mesh. Inexpensive, light in weight, good in versatility and compact in structure. The selection of filter materials generally takes into account the resistance and use of the air filter to prevent airborne particles from affecting the clean area and ensure the service life of the filter.

Airborne particulate matter removal technologies mainly include mechanical filtration, adsorption, electrostatic dust removal, anion and plasma methods, and electrostatic electret filtration. Mechanical filtration generally captures particles through the following three methods: direct interception, inertial collision, and Brownian diffusion mechanism. It has a good collection effect on fine particles but has a large wind resistance. In order to obtain high purification efficiency, the filter element needs to be dense and replaced regularly. Adsorption is to use the large surface area and porous structure of the material to capture particle pollutants, which are easy to block, and the effect of removing gas pollutants is more significant; electrostatic dust removal is to use a high-voltage electrostatic field to ionize the gas so that the dust particles are charged and adsorbed to the electrode. The dust method, although its wind resistance is small, has a poor effect on the collection of larger particles and fibers, which will cause discharge, and the cleaning is troublesome and time-consuming, and it is easy to generate ozone and form secondary pollution. Negative ions and plasma methods work similarly to remove indoor particulate pollutants. They both charge the particulates in the air and coalesce to form larger particles that settle. However, the particulates are not actually removed, but only attached to nearby surfaces. , easily lead to dust again. Electrostatic electret filtration is represented by 3M "high-efficiency electrostatic air filter", which adopts breakthrough permanent electrostatic filter material to effectively block particulate pollutants larger than 0.1 micron in the air, such as dust, dander, pollen, bacteria, etc. Low impedance ensures the stable operation and cooling effect of the air conditioner. In addition, the deep dust holding design ensures a longer service life. It is widely used in home and car air conditioners (such as SAIC, Volkswagen, GM and other well-known brand best-selling models) and some commercial buildings (such as Bird's Nest, Beijing Hotel, Capital Airport Phase III). Conventional standard filter media are very effective at removing particles above 10 microns. When the particle size of the particles is reduced to the range of 5 microns, 2 microns or even sub-microns, the high-efficiency mechanical filtration system will become more expensive, and the wind resistance will increase significantly. Filtrated by electrostatic electret air filter material, it can achieve high capture efficiency with low energy consumption, and at the same time has the advantages of low wind resistance of electrostatic dust removal, but it does not need to connect tens of thousands of volts, so it will not generate ozone, and because Its composition is made of polypropylene, which is easy to dispose of. This type of filter material is more useful for low-temperature polluted air. Due to the limitation of the fiber material itself, this type of material cannot be used in a polluted air environment higher than 130 degrees.

Polyester needle felt is a filter material with advanced functions and high-efficiency materials. Generally, the temperature of the flue gas is not higher than 150°C, and flexible filter materials such as polyester needle-punched non-woven fabrics can be used, but the industrial temperature is higher than 150°C, such as chemical industry, carbon black tail gas, ironmaking blast furnace gas, and cement plant vertical cellar tail gas , Calcium carbide factory pit furnace exhaust gas, foundry, steelmaking flue gas, asphalt concrete mixing asphalt flue gas, coking flue gas, smelting flue gas, etc., use aramid fiber filter bags. One is that these flue gas dusts are not suitable for ESP collection due to the limitation of specific resistance, and can only be collected by cloth bags; second, if the temperature of the dust-laden flue gas needs to be lowered below 150°C, the investment is high or limited by the site; The third is because the temperature of the dust flue gas contains sulfur components and has an acid dew point, and the dust-containing flue gas can only be filtered and separated at a higher temperature above the acid dew point.

Glass fiber needle felt can be widely used in high temperature flue gas filtration of chemical industry, steel, metallurgy, carbon black, power generation, cement and other industrial furnaces. It is suitable for various bag-type dust collectors such as pulse cleaning and relatively high-speed back-blowing dust cleaning. Glass fiber needle felt is a high temperature resistant filter material with reasonable structure and good performance. It not only has the advantages of high temperature resistance, corrosion resistance, stable size, extremely small elongation and shrinkage, and high strength of glass fiber fabrics, but also has a single-fiber, three-dimensional microporous structure, high porosity, and low resistance to gas filtration. It is a high-speed, high-efficiency high-temperature filter material. Compared with other high temperature resistant chemical fiber felts, it has special advantages such as low price and higher temperature resistance. However, its running resistance is higher than that of ordinary chemical fiber high-temperature filter materials, and its filtration accuracy is slightly lower.

For high-temperature polluted air, "microporous thin composite filter material" is currently the most practical air filter material in specific environments. "Microporous thin composite filter material" is made of polytetrafluoroethylene as a raw material, which is expanded into a microporous film, and this film is compounded on various fabrics or paper substrates by a special process. It has become a new type of "microporous thin composite filter material". This is an ideal filter material, which has the inherent properties of PTFE, excellent chemical stability, extremely smooth surface, extremely low friction coefficient, high and low temperature resistance, no aging, and durable consumer goods. And it is also microporous, breathable and hydrophobic. However, due to the problems of the material itself, this kind of filter material has huge air resistance and high price, which limits its popularization and application.

Contents of the invention

Aiming at the problems of high running resistance and low filtration efficiency of the filter material in the prior art, the present invention provides a chenille yarn and its production method, through the combination of different temperature-resistant fiber raw materials, it can meet the requirements of filtering polluted air. It not only reduces the filtration resistance, but also improves the air filtration efficiency. At the same time, it can solve the problems that the textiles made of traditional chenille yarn are easy to shed and cannot be washed many times.

To achieve the above object, the present invention adopts the following technical solutions:

Compared with the prior art, the present invention has the following advantages: 1. the chenille yarn of the present invention can reduce the filtration resistance and improve the air filtration efficiency; washing problem.

detailed description

Example 1

The production method of the chenille yarn in this embodiment uses the arrow shaft loom to prepare the chenille yarn, and forms the chenille yarn through twisting machine online plying, which includes at least two groups of polyester brocade (30/70) composite orange petals The fiber core wires are preset at a distance of 1.5 cm in the longitudinal direction; the polyester-nylon (30/70) composite orange petal fiber feather yarn is fed in the weft direction between the openings of the two sets of core wires, and the two sets of core wires are guided by the twisted heddle to form twists on the feather yarn Knotting, the feather yarn is consolidated to form a feather yarn; after being cut by the blade group, the feather yarn between adjacent core threads in the feather yarn is cut to form a chenille yarn. Adjacent two or three chenille yarns are introduced into the twisting machine through the yarn guide hook, and the chenille yarn is directly prepared. In this way, the cohesive force between the core thread and the feather thread segment is high, and the use of the chenille thread to make textiles solves the problems that the existing chenille yarns are easy to shed and cannot be washed many times.

The production method also includes: forming a plied chenille yarn of chenille yarn on a twisting machine according to a preset twist direction; wherein, the twist direction refers to the twist direction of twisting, that is, the inclination of fibers in the twisted yarn direction or the direction of inclination of the single yarns in the twisted strand. In general, the twist direction is divided into Z twist and S twist. If the fiber in the single yarn or the single yarn in the strand is twisted, its inclination direction is from bottom to top, and from right to left is called S twist, also known as right-hand twist or right-hand twist; if the inclination direction is from bottom to top Above, from left to right is called Z twist, also known as left-hand twist or left twist.

The chenille yarn of this embodiment comprises two parts, a core thread and a feather yarn, and the feather segment is twisted on both sides of the core thread; the feather yarn is an aramid fiber with a fineness of 21Nm, and the The core wire is two strands, and the fineness of each strand is 24Nm. The core wire is made of quartz glass fiber. After the core wire is twisted, the feather yarn is sandwiched between the two core wires. The twist of the core wire is 590 twist/meter, the axial density of feather yarn is 390/cm.

In this embodiment, the surface of the core wire is coated with a coating of thermosetting polyimide melt adhesive.

Example 2

The production method of the chenille yarn in this embodiment uses the projectile loom to prepare the chenille yarn, and forms the chenille yarn by plying on-line through the twisting machine, which includes at least two groups of polyester brocade (30/70) composite orange petals The fiber core wires are preset at a distance of 1.5 cm in the longitudinal direction; the polyester brocade (30/70) composite orange petal fiber feather wires are fed in the weft direction between the openings of the two sets of core wires, and the two sets of core wires are guided by twisted healds to the feather wires. Kinks are formed, and the feather threads are consolidated to form feather blank yarns; after being cut by the blade group, the feather threads between adjacent core threads in the feather blank yarns are cut to form chenille yarns. Adjacent two or three chenille yarns are introduced into the twisting machine through the yarn guide hook, and the chenille yarn is directly prepared. In this way, the cohesive force between the core thread and the feather thread segment is high, and the use of the chenille thread to make textiles solves the problems that the existing chenille yarns are easy to shed and cannot be washed many times.

The production method also includes: forming a plied chenille yarn of chenille yarn on a twisting machine according to a preset twist direction; wherein, the twist direction refers to the twist direction of twisting, that is, the inclination of fibers in the twisted yarn direction or the direction of inclination of the single yarns in the twisted strand. In general, the twist direction is divided into Z twist and S twist. If the fiber in the single yarn or the single yarn in the strand is twisted, its inclination direction is from bottom to top, and from right to left is called S twist, also known as right-hand twist or right-hand twist; if the inclination direction is from bottom to top Above, from left to right is called Z twist, also known as left-hand twist or left twist.

Present embodiment chenille yarn comprises two parts of core wire and feather yarn, and feather yarn is the quartz glass fiber that fineness is 100Nm; Core wire is two 0.01Nm polytetrafluoroethylene fiber strands, and core wire adds 10 twists/meter Sandwich 10000/cm feather yarn between two core wires.

In this embodiment, the surface of the core wire is coated with a coating of thermosetting polyimide melt adhesive.

Example 3

The production method of the chenille yarn in this embodiment uses the projectile loom to prepare the chenille yarn, and forms the chenille yarn by plying on-line through the twisting machine, which includes at least two groups of polyester brocade (30/70) composite orange petals The fiber core wires are preset at a distance of 1.5 cm in the longitudinal direction; the polyester brocade (30/70) composite orange petal fiber feather wires are fed in the weft direction between the openings of the two sets of core wires, and the two sets of core wires are guided by twisted healds to the feather wires. Kinks are formed, and the feather threads are consolidated to form feather blank yarns; after being cut by the blade group, the feather threads between adjacent core threads in the feather blank yarns are cut to form chenille yarns. Adjacent two or three chenille yarns are introduced into the twisting machine through the yarn guide hook, and the chenille yarn is directly prepared. In this way, the cohesive force between the core thread and the feather thread segment is high, and the use of the chenille thread to make textiles solves the problems that the existing chenille yarns are easy to shed and cannot be washed many times.

The production method also includes: forming a plied chenille yarn of chenille yarn on a twisting machine according to a preset twist direction; wherein, the twist direction refers to the twist direction of twisting, that is, the inclination of fibers in the twisted yarn direction or the direction of inclination of the single yarns in the twisted strand. In general, the twist direction is divided into Z twist and S twist. If the fiber in the single yarn or the single yarn in the strand is twisted, its inclination direction is from bottom to top, and from right to left is called S twist, also known as right-hand twist or right-hand twist; if the inclination direction is from bottom to top Above, from left to right is called Z twist, also known as left-hand twist or left twist.

Present embodiment glass fiber chenille yarn comprises two parts of core wire and feather yarn, and the material of feather yarn is the polyparaphenylene benzobisoxazole fiber of 100Nm; Core wire is two 100Nm aramid fiber strands, core wire Add 1000 twist/meter to clamp 10000/cm feather yarn between two core wires.

In this embodiment, the surface of the core wire is coated with a coating of thermosetting polyimide melt adhesive.

Example 4

The production method of the chenille yarn in this embodiment uses the arrow shaft loom to prepare the chenille yarn, and forms the chenille yarn through twisting machine online plying, which includes at least two groups of polyester brocade (30/70) composite orange petals The fiber core wires are preset at a distance of 2 cm in the longitudinal direction; polyester brocade (30/70) composite orange petal fiber feather wires are fed in the weft direction between the openings of the two sets of core wires, and the two sets of core wires are guided by twisted healds to the feather wires. Kinks are formed, and the feather threads are consolidated to form feather blank yarns; after being cut by the blade group, the feather threads between adjacent core threads in the feather blank yarns are cut to form chenille yarns. Adjacent two or three chenille yarns are introduced into the twisting machine through the yarn guide hook, and the chenille yarn is directly prepared. In this way, the cohesive force between the core thread and the feather thread segment is high, and the use of the chenille thread to make textiles solves the problems that the existing chenille yarns are easy to shed and cannot be washed many times.

The production method also includes: forming a plied chenille yarn of chenille yarn on a twisting machine according to a preset twist direction; wherein, the twist direction refers to the twist direction of twisting, that is, the inclination of fibers in the twisted yarn direction or the direction of inclination of the single yarns in the twisted strand. In general, the twist direction is divided into Z twist and S twist. If the fiber in the single yarn or the single yarn in the strand is twisted, its inclination direction is from bottom to top, and from right to left is called S twist, also known as right-hand twist or right-hand twist; if the inclination direction is from bottom to top Above, from left to right is called Z twist, also known as left-hand twist or left twist.

The present embodiment chenille yarn comprises core thread and feather yarn two parts, and the material of feather yarn is the mixed yarn of quartz glass fiber, high silica glass fiber and aluminum silicate fiber, and the fineness of this mixed yarn is 10Nm, The fineness of the core wire is 5Nm, and the core wire is two strands composed of polysulfone-based amide fiber and poly-p-phenylene benzobisoxazole fiber. After the core wire is twisted, the feather yarn is sandwiched between the two core wires. In the middle, the twisting degree of the core wire is 600 twists/meter, and the axial density of the feather yarn is 800 strands/cm.

In this embodiment, the surfaces of the core wire and the feather yarn are coated with a coating of thermosetting polyimide melt adhesive.

Example 5

The production method of the chenille yarn in this embodiment uses the arrow shaft loom to prepare the chenille yarn, and forms the chenille yarn through twisting machine online plying, which includes at least two groups of polyester brocade (30/70) composite orange petals The fiber core wires are preset at a distance of 2 cm in the longitudinal direction; polyester brocade (30/70) composite orange petal fiber feather wires are fed in the weft direction between the openings of the two sets of core wires, and the two sets of core wires are guided by twisted healds to the feather wires. Kinks are formed, and the feather threads are consolidated to form feather blank yarns; after being cut by the blade group, the feather threads between adjacent core threads in the feather blank yarns are cut to form chenille yarns. Adjacent two or three chenille yarns are introduced into the twisting machine through the yarn guide hook, and the chenille yarn is directly prepared. In this way, the cohesive force between the core thread and the feather thread segment is high, and the use of the chenille thread to make textiles solves the problems that the existing chenille yarns are easy to shed and cannot be washed many times.

The production method also includes: forming a plied chenille yarn of chenille yarn on a twisting machine according to a preset twist direction; wherein, the twist direction refers to the twist direction of twisting, that is, the inclination of fibers in the twisted yarn direction or the direction of inclination of the single yarns in the twisted strand. In general, the twist direction is divided into Z twist and S twist. If the fiber in the single yarn or the single yarn in the strand is twisted, its inclination direction is from bottom to top, and from right to left is called S twist, also known as right-hand twist or right-hand twist; if the inclination direction is from bottom to top Above, from left to right is called Z twist, also known as left-hand twist or left twist.

The chenille yarn of this embodiment includes two parts, a core thread and a feather yarn. The material of the feather yarn is a mixed yarn composed of quartz glass fiber and polytetrafluoroethylene fiber. The fineness of the mixed yarn is 0.01Nm. The core The fineness of the wire is 0.01Nm. The core wire is two polybenzimidazole fiber strands. The cross section of the core wire is circular. The twist is 10 twists/meter, and the axial density of the feather yarn is 10 strands/cm.

In this embodiment, the surfaces of the core wire and the feather yarn are coated with a coating of thermosetting polyimide melt adhesive.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. a kind of production method of chenille yarn, utilize loom to prepare chenille yarn, form chenille thread through twisting machine on-line plying, it is characterized in that: it comprises at least two core wires at least two core wires are pre-set at warp-up interval The spacing is set, the feather yarn is fed in the weft direction between the openings of the two core wires, and the two core wires are guided by the twisted heddle to form a knot for the feather yarn, and the feather yarn is consolidated to form a feather yarn; The feather threads between adjacent core threads form chenille yarns, and two or three adjacent chenille yarns are introduced into the twisting machine through yarn guide hooks to prepare chenille yarns. 2. the production method of chenille yarn according to claim 1 is characterized in that: described loom is shuttle loom or shuttleless loom, and described shuttleless loom comprises air-jet loom, water-jet loom Weaving machines; shuttle looms include arrow looms or projectile looms. 3. the production method of chenille yarn according to claim 1, is characterized in that: also comprise the ply chenille yarn that forms chenille yarn on twisting machine according to preset twist direction. 4. A chenille yarn according to any one of claims 1-3, characterized in that: the core segment is twisted on both sides of the feather yarn. 5. chenille yarn according to claim 4, comprises core thread and feather yarn two parts, is characterized in that: also comprises and cuts the feather yarn between adjacent core threads in described feather blank yarn, forms chenille yarn yarn. 6. chenille yarn according to claim 5, is characterized in that: the material of described core thread is quartz glass fiber, high silica glass fiber, aluminum silicate fiber, polyamide-imide fiber, polyether Ether ketone fiber, polyphenylene sulfide fiber, polysulfone-based amide fiber, polyparaphenylene benzobisoxazole fiber, polybenzimidazole fiber, polytetrafluoroethylene fiber, polyimide fiber, aramid fiber, polypropylene A mixture of one or more of fiber, polyethylene fiber, polyester fiber and basalt fiber. 7. The chenille yarn according to claim 6, characterized in that: the twist degree of the core thread is 10-1000 twists/meter, and the fineness of the core thread is 0.01-100 Nm. 8. chenille yarn according to claim 4, is characterized in that: the material of described feather yarn is aramid fiber or aramid fiber and quartz glass fiber, high silica glass fiber, aluminum silicate fiber, polyamideimide fiber, polyether ether ketone fiber, polyphenylene sulfide fiber, polysulfone-based amide fiber, polyparaphenylene benzobisoxazole fiber, polybenzimidazole fiber, polytetrafluoroethylene fiber, A mixed yarn of one or more of polyimide fiber, aramid polypropylene fiber, polyethylene fiber and polyester fiber. 9. The chenille yarn according to claim 8, characterized in that: the axial density of the feather yarn is 10-10000 yarns/cm, and the fineness of the feather yarn is 0.01-100 Nm fiber yarn.