products categories 01
Dongguan Cowint New Material Technology Co., Ltd. specializes in the printing industry, heat transfer printers, ironing machines, and auxiliary materials for thermal transfer printing. Seeking credibility, management for efficiency, quality for development, service for credibility", to provide customers with high-quality services in the thermal transfer printing industry.
heat transfer machine Leather Textile Printing Digital Aluminum Printer With White Dual Nozzle

This digital offset heat press printer with length 1700 mm* width 850mm* height 1560mm is made of two high-quality materials, aluminum and sheet metal. Accurate, high production efficiency and good performance, can quickly print colorful and large number of printed logos.

dtf film printer Digital Printing Machine Heat transfer printing all-in-one machine For Label Printing

Cowint  is a professional manufacturer.Digital printer prints out transfer labels, print head: 13200-U1*4PCS, 5㎡/h high-speed production, high-quality output crystal label, fast printing speed, convenient operation


label printer machine T-shirt Digital Logo Heat Transfer Printer

Small size, light weight, high productivity, easy to operate all-in-one transfer printer, widely used, can be applied to the packaging of textiles, glass, wood, plastic, etc.

dtf film printer Heat Transfer T-shirt Logo Garment Polo All In One Inkjet Printers Machine

Digital offset hot stamping printer, with 3200PI printing accuracy, two types of white and color nozzles work at the same time, high efficiency and high-quality product technology.


ricoh t shirt printer Cowint Best Epson Digital t shirt Printer

Cowint is a professional t-shirt printer manufacturer, digital printers print out transfer labels, and you can choose from various types of products. Nozzle: XP600&EPSON-I3200&EPSON-4720&EPSON-1080 can quickly print out high-quality output crystal labels, and the operation is convenient.


dtf transfer printer Direct To Film Transfer Printer for DTF Printing

Cowint is a professional digital direct to film transfer printer manufacturer. Lift-type aluminum digital printer, printing speed 4pass\30m², 6pass\20m², 8pass\14m², can meet the requirements of quantity while ensuring quality.


dtf transfer printing High Quality dtf Printing Technology Meaning

Cowint printer has 4 staggered EPSON-I3200 print heads.High-precision imported aluminum alloy forming beam, the mechanical strength can be comparable to the imported machine! DTF Inkjet printer for t shirts can achieve high printing speed under small printing width. DTF printer is equipped with a white ink circulation stirring system, stable printing and long life of the print head. The mechanical parts and ink system used in digital offset hot stamping printer borrow large-format printers, so the equipment is reliable and has a long service life.

dtf screen print transfers Dtf Printing System Package Advantages Services Near Me Printer For Shirt

Cowint printer has 4 staggered EPSON-I3200 print heads.High-precision imported aluminum alloy forming beam, the mechanical strength can be comparable to the imported machine! DTF Inkjet printer for t shirts can achieve high printing speed under small printing width. DTF printer is equipped with a white ink circulation stirring system, stable printing and long life of the print head. The mechanical parts and ink system used in digital offset hot stamping printer borrow large-format printers, so the equipment is reliable and has a long service life.

cara print dtf Best 600mm Printer dtf t shirt Heat Transfer Printer For dtf

Cowint printer has 4 staggered EPSON-I3200 print heads.High-precision imported aluminum alloy forming beam, the mechanical strength can be comparable to the imported machine! DTF Inkjet printer for t shirts can achieve high printing speed under small printing width. DTF printer is equipped with a white ink circulation stirring system, stable printing and long life of the print head. The mechanical parts and ink system used in digital offset hot stamping printer borrow large-format printers, so the equipment is reliable and has a long service life.

heat press machine 80x100 Heat Transfer Machine Garment Sleeve Into Autoclave Manual Fabric Heat Press Machine

Pressing machine printing heat transfer equipment can heat various heat transfer on cotton, linen, chemical fiber and other fabrics by heat transfer, and can also perform heat treatment by screen printing, mucilage, foaming and other processes.


heat press machine 5 in 1 8 in 1 T-shirt high accuracy heat press machine

Thermal transfer printing machine, manual pressing machine, 30*40/50*80/80*100 and other heating plates of various sizes.

High temperature processing patterns can quickly transfer the logo of the film on the woven fabric, the picture quality is clear, and the hand feels soft.



heat press machine 80x100 180 Degree Shaking Rotary Manual Press

It can be rotated 180 degrees, which is flexible, safe and convenient;The pressure adopts pneumatic cylinder device, which can convert small pressure into strong compression force;The upper and lower aluminum plates are thickened, and the heating pipe and the heating plate are integrally cast, which is safe, durable and evenly distributed;The improved lower support plate makes it more convenient for garments to be inserted;Adjust the pressure at will.



heat press machine bedt 220V Plate Manual Logo Heat Press Machine

Double station hydraulic up and down sliding printing and pressing textile logo ironing machine, strict quality assurance, fast drawing, perfect picture quality.


PET film  powdrer  machine Shake Powder Machine DTF Printer Powder Dryer

It is a special shaker for four-nozzle high-speed white ink heat press machine. The product dries more thoroughly, the product is more stable, and it has the effects of no cracking, no foaming, no ink spillage, no edge seepage, and even powder shaking.



powder shaker Automatic Exhaust DTF Hot Melt Powder Shaking Machine

It is a special shaker for four-nozzle high-speed white ink heat press machine. The product dries more thoroughly, the product is more stable, and it has the effects of no cracking, no foaming, no ink spillage, no edge seepage, and even powder shaking.


dtf shake powder machine Hot Melt Powder Shaking DTF Dryer Machine

Cowint Powder Shaker, a quiet but powerful motor, makes it easier and faster to shake hot melt powder at every angle. Commercial and durable design, stable when shaken, easy and fast installation. It can be used as a special shaker for four-nozzle high-speed white ink heat press machine.



Thermal transfer powder shaker 650MM Automatic DTF Powder Shaking Powder Shaker And Dryer Machine

It is a special shaker for four-nozzle high-speed white ink heat press machine. The product dries more thoroughly, the product is more stable, and it has the effects of no cracking, no foaming, no ink spillage, no edge seepage, and even powder shaking machine.

Thermal Transfer Drying Rewinding Exhausting DTF Powder Shaking Machine Over-Powder Thermal Transfer Drying Rewinding Exhausting DTF Powder Shaking Machine

The extended white ink heat transfer powder shaker is 2.58 meters long, and the oven part is 1 meter. The powder shaker can be customized for one piece, and can also meet the mass production of 6,000 square meters per day.

Can be used on cotton, polyester, chemical fiber, leather, nylon, canvas, non-woven fabrics and other textile fabrics.


embossing silicone machine Pressure Stabilized Silicone Embossing Ironing Machine For Sale In China Market

Silicone embossing machine is mainly used for garments, leather, shoe materials, embossing, gloves, shoes, PVC glue, Double-sided PVC trademark clamping, small solid silicone products.

printing embossing machine T-shirt Embossing Automatic Hydraulic Clothes Emboss Print Soft Silicone Logo Pressing Machinery

The heating plate on the machine moves two stations left and right, the platform is fixed, and the workbench is overhead, which can be put on garments, clothes, pants, socks, etc. The machine heats up and down, suitable for embossing, double-sided transfer of materials, and several kinds of fabrics composite process

embossed t shirt printing machine 3D Effect Printing Silicone Heat Press Embossing Machine

The embossed logo printing machine is controlled by microcomputer, and the pressure is adjustable. The double-position sliding mechanism makes the product more targeted during hot stamping, and there will be no indentation, deformation, fading and other defects in other places of the same product that do not need hot stamping. Response, the effect is firmer and the hand feels softer.

heat transfer ink Inkjet transfer paper printing ink

Excellent smoothness, no blockage, no wrong spray, uniform distribution of ink particles,excellent smoothness, no blockage, no wrong spray, uniform distribution of ink particles.


brother dcp t300 ink Good Stability Pigment Inkjet DTF Transfer Inks For Printer

Excellent smoothness, no blockage, no wrong spray, uniform distribution of ink particles


ink supply Eco solvent vinyl heat transfer DTF Ink For Epson Printer

Never clog the nozzle; "Instant" operation and downtime possible



king inkjet Trader Pixma G670 Latex Printing Ink Print

Digital pinter ink .Pigment digital ink fixed speed, a variety of printing materials of good fixation, strong adhesion




DTG PRO UV LED ink DTF Heat Transfer Pigment splashjet CMYKW printer Ink

brand Printer Ink For Inkjet Printer

Premium Color Compatible Bulk Bottle Water Based Refill Ink

Non-toxic harmless bright colors, good transfer printing effect




DTF Gang Sheet Vollfarbe DTF Transfer

Be unique and express your creativity with your own wearable art! The heat transfer film can be done using both a domestic iron, which every household has OR professional heat press.




PET film for heat transfer t-shirt, Digital Inkjet Transfer PET Film Sheets

Water transfer printing film suitable for use with any make of Inkjet printer including Canon, Epson, HP, Kodak, Lexmark etc. using the printer’s normal, dye or pigment based ink.




Heat Transfer Vinyl Sheets Wholesaler heat transfer film roll

Ink pigment and metalized layer is transferred from heat transfer film to the product to be decorated. Transfer is done by using the heat and pressure on heat transfer machine.

Water transfer printing film suitable for use with any make of Inkjet printer including Canon, Epson, HP, Kodak, Lexmark etc. using the printer’s normal, dye or pigment based ink.




inkjet transfer film; Heat transfer PET film Vinyl Sheets

Heat transfer film is suitable for printing, and the printing surface is a fog-like, matte finish effect. This makes it ideal for co-heat transfer of printing plants, hot stamping factories, clothing transfer brands, wash labels and more




Custom Inkjet Pigment Heat Transfer DTF Transfer Film

Direct printing on film to create a kind of transfer digital that once printed and cured can be applied on cotton shirts, polyester and blend any color and incorporating white ink.




Hot Melt Adhesive TPU Fine And Coarse Hot Melt Powder For Heat Transfer Printing

Because of its excellent adhesion performance, it is often used as high-quality hot-melt adhesive in other industries. It is in high elastic state at room temperature, viscous flow state after heating and melting, and fast curing speed.





Wihte TPU Hot melt powder for DTF heat transfer printer

TPU hot melt adhesive powder has excellent properties such as high bonding strength, soft hand feeling, good resilience, and washing resistance.





Adhesive Powder For Sublimation DTF Adhesive glue DTF Transfer Powder

TPU hot melt adhesive powder,Because of its excellent adhesion performance, it is often used as high-quality hot-melt adhesive in other industries. It is in high elastic state at room temperature, viscous flow state after heating and melting, and fast curing speed.




polyamide powder DTF Hot Melt Powder Adhesion PET Film For T shirt

Hot melt powder is used in the printing of various textiles, leather, paper, wood and other materials and the preparation of various glues. The glue produced has the characteristics of water resistance, good fastness, fast drying speed, not easy to block the net, and does not affect the color of the ink, and is a new type of environmentally friendly material. Product Details


dtf film transfer Heat transfer film

dtf film priceThe thermal transfer decoration process is a process in which the thermal transfer film is heated at one time to transfer the decorative pattern on the thermal transfer onto the surface of the decorated building material to form a high-quality decorative film.


A3 the best dtf transfer printing film

The DTF heat transfer process is to print the pattern on the heat transfer film through a DTF printer, and then heat it at 150 degrees to transfer the pattern to the fabric.

pigment inkjet printer direct dtf inkjet printer heat transfer film

The thermal transfer decoration process is a process in which the thermal transfer film is heated at one time to transfer the decorative pattern on the thermal transfer onto the surface of the decorated building material to form a high-quality decorative film. 


forever transfer paper dtf digital heat transfer printing pet film

The thermal transfer decoration process is a process in which the thermal transfer film is heated at one time to transfer the decorative pattern on the thermal transfer onto the surface of the decorated building material to form a high-quality decorative film. 


dtf film roll the best photo sublimation fabric dtf transfer paper

The thermal transfer film is made of polyethylene film as a backing paper with a wood grain decorative layer printed on it. The surface is coated with a protective layer, a base color layer, a release layer and a hot melt adhesive layer.

about us02
DongGuan Cowint new material technology co.,ltd
About Us - Heat Transfer Machine Manufacturers,Fabric Printing Machine,pet film printer
26
+
Years Experience
12000
+
Workshop(m2)
60
+
Country and Region
168
+
Staff
Company and product advantages03
Dongguan Cowint New Material Technology Co., Ltd., as a high-tech enterprise, in the new era, focused on the high-end brand.Our company specializes in R&D, production and sales of printer in one machine, thermal transfer press, and silicone machine, high-end printing materials, transfer ironing materials, transfer digital ink, printing silicone, auxiliary and other printing materials. At the same time, Covent has used many years of industry development experience to integrate industry resources, provide the overall printing-related solutions for high-end customers.
Company Advantage

Dongguan Cowint New Material Technology Co., Ltd. has 26 years of practical experience in factories. Whether it is technical maturity or team professionalism, it is the first in the industry. Sincere cooperation purpose! Warm service attitude! Professional manufacturing! We sincerely welcome friends at home and abroad to visit and guide, and join hands in creating a better future.

  • Monthly production capacity: Transfer printing machine is more than 200 pcs; Heat press machine is 500 pcs, Transfer film is more than 100,000 square meters,printing ink material more 1000tons
  • ISO9001, ISO14000, Oeko Standard 100, GOTS, ZDHC certification,quality assurance.
  • 26 years history, “Top 10 Brand”in China printing material area.
  • 3-5 days delivery time ,Professional route transportation products Manual service 24h online consultation.
Application cases05
Years of factory experience,supply heat transfer printing machine、Thickened plate sublimation heat press machine、hot melt powder shaking dryer machine、Ink Stable Heat Transfer Mate
Cowint is a professional manufacturer。Digital printer prints out transfer labels, print head: 13200-U1*4PCS, 5㎡/h high-speed production, high-quality output crystal label, fast printing speed, convenient operation
View More
It is a special shaker for four-nozzle high-speed white ink heat press machine. The product dries more thoroughly, the product is more stable, and it has the effects of no cracking, no foaming, no ink spillage, no edge seepage, and even powder shaking.
View More
Thermal transfer printing machine, manual pressing machine, 30*40/50*80/80*100 and other heating plates of various sizes, high temperature processing patterns can quickly transfer the logo of the film on the woven fabric, the picture quality is clear, and the hand feels soft.
View More
Pressing machine printing heat transfer equipment can heat various heat transfer on cotton, linen, chemical fiber and other fabrics by heat transfer, and can also perform heat treatment by screen printing, mucilage, foaming and other processes.
View More
OUR BLOG06
A Brazilian research team has invented a new textile material that can remove the new coronavirus.
Jun 20, 2022
A Brazilian research team has invented a new textile material that can remove the new coronavirus.
According to foreign media, a research team at a Brazilian start-up has developed a new textile material that can eliminate the new coronavirus on its surface in just two minutes, with an efficiency of up to 99.9%, or can be used to make medical masks and protective clothing.According to a report by the Buenos Aires Economic News Network in Argentina on June 17, researchers from the Institute of Biomedical Sciences of the University of São Paulo in Brazil, supported by scientists from the University of Jaime I in Spain, have developed a method that uses two different silver particles. New textile material of impregnated polyester fiber and cotton fabric blend.The project is being developed by a tech startup founded by researchers at the University of São Paulo. Researchers at a research and development center for functional materials in the state of São Paulo are also involved in the project.The start-up, Nanox, is developing antibacterial fabrics and fungicides, and this newly developed material will be used to make medical masks and protective clothing.Luis Gustavo Pagoto Simmons, head of Nanox, said: "We have applied for a patent for this technology and are in talks with two Brazilian textile companies. Once negotiated, the two companies will use the The technology makes medical masks and protective clothing."The results of tests conducted by the researchers showed that the fabric impregnated with silver microparticles inactivated 99.9 percent of the virus after only two minutes of contaminating its surface with organic matter, the report said.Lucio Freitas Junior, a researcher at the University of Sao Paulo and one of the leaders of the study, said: "The amount of Covid-19 that we used to contaminate the fabric during the test was much higher than the environment in which the medical masks were exposed. The number of viruses in the cells. Even in this case, the new material is able to clear the virus with high efficiency."The researchers are still testing the duration of the fabric's antiviral effects. Other materials previously developed by the company have antibacterial capabilities that last up to 30 washes.Simons said: "This fabric is the first development of the use of silver particles to inactivate the new coronavirus, and we will soon develop more kinds of anti-viral fabrics."
Gathering business opportunities, strengthening confidence, and chaining the future, the China Textile Federation Autumn Joint Exhibition will set sail again in August!
Jun 20, 2022
Gathering business opportunities, strengthening confidence, and chaining the future, the China Textile Federation Autumn Joint Exhibition will set sail again in August!
In the critical period when the current epidemic prevention and control situation is improving and the domestic economy is accelerating the recovery and development, the annual event of the textile industry - the 2022 China Textile Federation Autumn Joint Exhibition will be restarted again, bringing together China International Textile Fabrics and Accessories (Autumn and Winter) Expo, China International Garment Apparel Expo (autumn), China International Textile Yarn (autumn and winter) exhibition and China International Knitting (autumn and winter) expo four professional exhibitions will be unveiled at the National Convention and Exhibition Center (Shanghai) from August 29 to 31.This is not only a gathering of exhibitors, exhibitors, and audiences eagerly looking forward to after a few months of silence, but also an important business exchange and docking platform for industry companies to demonstrate their strength, expand markets, and seek business opportunities. We will strengthen the confidence of the whole industry and accelerate the coordinated resumption of work and production of upstream and downstream enterprises. We will try our best to recover the time and losses caused by the epidemic, and strive to compose textiles and garments on the road of a new journey with practical actions. new chapter.Gather pioneers and integrate innovationSince 2020, the ups and downs of the epidemic have continued to test the resilience of the supply chain of my country's textile and apparel industry chain. Especially since March, the spread of the domestic epidemic has caused many textile and garment enterprises to face huge challenges in their production and operations. It has become the consensus of everyone to adjust and optimize the layout of the supply chain, build a truly competitive industrial chain advantage, and ensure the safe and stable operation of the textile and garment industry supply chain.At this time, the co-frequency linkage of the four exhibitions at the same time and in the same place will undoubtedly provide a steady stream of new impetus and new potential energy for the restart of the industry, promote the docking, communication and integration and innovation of upstream and downstream enterprises in the industry chain, and promote the formation of a coordinated, efficient and smooth industry. Chain supply chain, strong development of resilience and anti-risk capabilities, and ultimately achieve a symbiosis and win-win situation for upstream and downstream enterprises. From textile fabrics and accessories, apparel, to yarn and knitting, new products, new technologies and new trends in the textile industry are gathered here. The four exhibitions work together to demonstrate the solid strength of China's textile and apparel industry.At the same time, each exhibition will hold a series of rich and diverse activities, through fashion trend release, forum salon, new product launch conference, live broadcast tour, high-quality selection and other forms, to output value information and help the industry to move forward.Gather business and seek common development"Golden Nine Silver Ten" has always been the peak season for textile and apparel trade, especially when the local epidemic prevention and control situation is becoming more and more stable, industry enterprises are stepping up to restore the previous level of production and operation. It has become the best choice for enterprises to seize the "Golden Nine Silver Ten" business opportunities with "recovery".Digital technology empowers business and trade. The four exhibitions will upgrade digital services, realize online and offline dual-track linkage, integrate omni-channel industry resources with digital technology, and help exhibitors and professional visitors connect efficiently during the exhibition. At the same time, a large number of professional audiences and channel resources will gather on the scene, and a series of business activities and customized precision business services will also release a large amount of backlog in the industry and stimulate market vitality again."Good things come from hard things, and brilliance always comes from hard work." Although the complexity, severity and uncertainty of my country's economic development environment are on the rise, there are always more ways than difficulties. In the face of the pressure in the early stage, many companies have seized the opportunity to transform production processes, promote digital transformation, and constantly innovate and polish "internal strength" to enhance their competitiveness. The China Textile Federation will also continue to provide services for enterprises, guide and help enterprises to seize the opportunity of integrated development of domestic and foreign trade, nurture opportunities in the crisis, and open new situations in the changing situation, so as to better promote the docking of domestic and foreign markets, Gradually form a new pattern of domestic and international "dual circulation".Gather business opportunities, strengthen confidence, and chain the future. At that time, the China Textile Federation's autumn joint exhibition will gather the power of the textile industry to innovate, forge ahead, and meet everyone at the Convention and Exhibition Center (go to the country sea).
Factors Affecting Color Paste Application
Jun 18, 2022
Factors Affecting Color Paste Application
When printing textiles with special paints, there must be printing pastes with different characteristics first, so let's review its origin. In the pigment printing of knitted fabrics, under its elastic extension, white spots (also called white ink) will appear in the printing part. Gold and silver powder printing is also affected by the low pH value of the pigment paste.Factors affecting the application (1) The contact time T (s) of the color paste movement element in the wedge-shaped area means that a certain mesh of the rotary screen starts from entering the wedge-shaped area of the paste storage and leaves the imprinting point (the contact point between the scraper or the magnetic bar and the rotary screen) ), the elapsed time is determined by the width B (mm) of the wedge-shaped area and the printing speed V (m/s): T=B/V.B can be calculated from the amount of printing paste pressed into the wedge-shaped area and the geometric characteristics. It is generally believed that the high printing speed will make the color paste more squeezed and increase the amount of paste. But in fact, it was found that high printing speed will reduce the amount of application, while the reduction of printing speed will increase the amount of pulp. The reason is that the high printing speed reduces the time, the contact time between the mesh and the color paste is reduced, and the amount of color paste exudation is reduced. Practice has proved that this factor is more dominant than other factors. The greater the viscosity of the colorant, the greater the effect of speed changes.In recent years, there have been reports in our country that the method of blending is used to modify it, but the emulsion is unstable and the film strength is greatly reduced. However, the method of copolymerization is used for modification, and there are few researches and applications at present. Through the silicone-modified acrylic resin leather finishing agent, the coating from the bottom layer to the middle layer can achieve very good surface performance with the same paste. Main quality indicators Emulsion appearance, fluorescent milky white liquid thermal stability, no precipitation chemical stability, is a general-purpose high-grade leather special finishing agent.
Research on Levelling Agents Commonly Used in Printing and Dyeing Dyes
Jun 18, 2022
Research on Levelling Agents Commonly Used in Printing and Dyeing Dyes
How to avoid unevenness in the printing and dyeing process is one of the important indicators of the quality of the printing and dyeing process. Leveling agent is an auxiliary agent used to make the dye evenly dyed on the dyed object. One of the functions of the leveling agent is enough to make the dye adsorbed by the fiber relatively slowly, and secondly, when the dyeing is uneven, it makes the dye in the dark part move to the light part, and finally achieves leveling. Therefore, retardation and migration are the two most important functions of leveling agents.In recent years, various new fibers have been widely used in the printing and dyeing industry. At the same time, with the gradual improvement of people's awareness of environmental protection, various types of leveling agents have been developed. The development of leveling agents for dyes is reviewed to better promote the research of leveling agents in my country.1. Levelling agent for reactive dyesThe dyeing of cellulose fibers, at present, the proportion of reactive dyes is the largest. Reactive dyes are water-soluble dyes containing reactive groups, which can chemically combine with macromolecules such as cotton, wool, and silk, so the soaping and rubbing of dyed fabrics are fast. degree is very high. The commonly used leveling agents are generally nonionic surfactants. In addition to nonionic surfactants, anionic leveling agents and complexes of nonionic and anionic surfactants have also been frequently used in recent years.The hydrophobic groups of commonly used 1F ionic surfactants can be higher alcohols, higher fatty acids, higher alkylamines, etc. The hydrophobic groups are above C12, and long-chain alkyl groups of C16 and C18 are ideal, which can be hydrophilic with polyoxyethylene. Water groups form ether-bonded, ester-bonded, amine-bonded, etc. linked forms.The commonly used leveling agents Pingping 0, leveling agent 102 and leveling agent OP have a certain leveling effect on the dyed part of reactive dyes. Because the long molecular chain of this type of leveling agent contains polyoxyalkyl ether, it can form loose oxygen bonds with hydroxyl (-OH), amino (-NH) and other groups in the dye molecule. On the one hand, it combines with the dye to form a relaxed complex in the dye liquor, which hinders the adsorption and dyeing of the dye, thus playing a role in retarding the dyeing; It further promotes the uniform adsorption of dyes. For example, leveling agent WE for wool is aliphatic amine polyoxyethylene ether, which belongs to non-ionic/weak cationic type. It is mainly used as leveling agent for reactive dyeing of wool, which can improve the color supply. Affects the dyeing percentage, and also has excellent leveling effect in medium, neutral, weak acid and metal complex dyes.2. Anionic surfactantsAnionic dispersing and leveling agents are dye affinity leveling agents. Anionic surfactants have the same ionic type as reactive dyes. The mechanism of preempting the dyeing mat is adopted to slow down the dyeing speed of dyes. Leveling agent EDER is an anionic leveling agent whose chemical composition is a complex of aromatic polyether sulfonates. It is a relatively new type of anionic leveling agent. Its advantages are as follows:1) The leveling agent EDER has a certain chelating and dispersing adjustment function for heavy metal ions such as calcium and magnesium, and improves the quality of dyes; (2) In the |: dye adsorption stage, it has excellent retarding performance, and controls the dye to evenly dye and adsorb. ; (3) In the fixation stage, buffer the pH of the dye bath to ensure that the dye is fixed evenly and evenly to avoid uneven fixation; (4) No adverse effect on the dyeing fastness of the fabric.Cotton dispersing and leveling agent 40Dx produced by Shanghai Daxlang Chemical Industry Co., Ltd. (Daxlang) is a new type of dispersing and leveling agent for cellulose fibers dyed with reactive dyes. In addition, it also has the effect of preventing the secondary agglomeration of metal ions such as calcium and magnesium and dyes to cause dye spots; it does not affect the final color, and has low foaming properties.In addition, there are reactive dye leveling agent 640 and Daimian ER which have good leveling properties for reactive dyeing.3. Compounds of nonionic and anionic surfactantsNonionic surfactants obtain retarding effect by combining oxygen atoms on polyoxyethylene bonds with dye molecules by oxygen bonds. At present, most of the nylon leveling agents provided by auxiliary manufacturers are anionic/nonionic composite leveling agents, mainly including nylon leveling agent M-2200 (Hangzhou Meigao Huayi Chemical), leveling agent SWP Ningbo Xinghua Chemical), Nylon Leveling Agent N-1l (Shanghai Daxiang Chemical), Nylon Leveling Agent GND (Nantong Sint Chemical), Leveling Agent FK460 (Beijing China Textile Chemical), Leveling Agent TBW-951 (Guangdong Demei Chemical) , Nylon leveling agent rrs (Wuxi Changsheng Fine Chemicals).2. Levelling agent for disperse dyes1. Polyester fabricWhen dyeing polyester with disperse dyes, the levelness is good, and the dyeing fastness is very high. At present, disperse dyes are mostly used for high temperature and high pressure dyeing in polyester dyeing processing, but it is difficult to color dark dyes and causes environmental pollution.Product development has been the most active research topic in the textile industry for the past two decades. The superfine polyester fabric has a fast color absorption rate, and an appropriate leveling agent should be added to the dyeing bath to improve leveling. The leveling agent should have the following conditions: (1) good retarding effect; (2) good migration effect; (3) good dispersing effect, especially at higher temperatures (such as 80-120 ℃) Dispersion of dyes; (4) Does not affect dye uptake and shade; (5) Good stability against hard water and various heavy metal ions. For example, the leveling agent RDP=2000 is made of polyol and aromatic acid after reaction, and then compounded with emulsifier. It belongs to non-ionic and anionic compound leveling agent. RDP-2000 has strong permeability and dye migration, which can improve the high temperature dispersibility of disperse dyes to a certain extent. The advantages are: (1) easy application and good effect; (2) wide technological adaptability; (3) effectively inhibiting tar spot and color spot phenomenon; (4) no adverse effect on the color light and fastness of dyestuffs. The new polyester high temperature leveling agent WYR-1 is developed by using sodium dodecyl benzene sulfonate, sodium dodecyl polyoxyethylene ether sulfate, polyoxyethylene (7) glycerin cocoate and surfactant WYR. The performance test and application show that WYR-l has good dye dispersibility, levelness, migration and dye uptake, low bubble point and cloud point higher than 100℃.2. Polyester microfiberCompared with ordinary fibers, microfibers have the characteristics of small monofilament fineness, large specific surface area and high content of amorphous area, which are easy to cause uneven dyeing. Therefore, it is very important to choose a suitable leveling agent.The leveling agent TF-215 developed by Zhejiang Transchemical Co., Ltd. can significantly reduce the initial adsorption percentage of disperse dyes, improve the desorption and migration of dyes at the initial stage and at high temperature, and increase the high temperature dispersibility and compatibility of dyes. Traditional disperse dyes can be used for microfiber dyeing in the presence of leveling agent TF-215.In addition, β-cyclodextrin is also an effective leveling agent in the study of dispersion dyeing of polyester microfibers. Cyclodextrin is a polycyclic glucose obtained by biotechnology, by degrading polysaccharide starch by cyclodextrin glucosyltransferase. Among them, the special cyclic structure of β-cyclodextrin can form inclusion complexes with most cationic dyes, so that they can be released slowly during the dyeing process, and the E dyeing rate can be slowed down to play a level dyeing effect. And the use of β-cyclodextrin does not affect the final surface color depth and color fastness of the dye, but it is not suitable to be used together with surfactants. The β-cyclodextrin ring has a moderate size, high solubility in water and biodegradation, and has a wide application prospect in printing and dyeing processing.
Research progress of special paint printing paste
Jun 18, 2022
Research progress of special paint printing paste
Since the application of pigment printing on textiles in the mid-1950s, my country has undergone continuous improvement and innovation, but the research on special pigment printing pastes has been slow and the effect is not good.The pre-emulsification process is to emulsify part of the monomers at room temperature before entering the reactor, so that the organosiloxane and acrylate can be effectively formed into monomer particles adsorbed by the emulsifier, and the dispersion is relatively uniform. When it is gradually added to the reaction kettle for chemical reaction, the polycondensation reaction of the organosiloxane itself and the free radical copolymerization reaction between it and the acrylate proceed simultaneously. At this time, the emulsifier adsorbed on the monomer particles gradually Transfer to the surface of latex particles to ensure the stability of the new polymer system generated by the reaction, reduce gel generation, and finally form a uniform and stable copolymer emulsion.Modification of acrylate with 5% to 10% of silicone monomer can make the synthetic paint printing adhesive feel soft and smooth. Adding 2% to 4% of N-methylol acrylamide can effectively improve the rubbing fastness of the pigment printing adhesive. Anionic/nonionic composite emulsification system (1:3) dosage 3%~4%, butyl acrylate dosage 50%~75%, ethyl acrylate dosage 20%~30%, acrylonitrile dosage 10%~15%, styrene The dosage of 5% to 10%, the dosage of acrylic acid is 2% to 4%, and the organic siloxane and reactive monomer are added. The synthesized paint printing adhesive has excellent performance and stable system. The pre-emulsification process of mixing organosiloxane and acrylic monomers can make the polymerization process safe and smooth, the polymer product system is stable, and there is no gel and oily phenomenon.
The difference between acid dyes and direct dyes
Jun 18, 2022
The difference between acid dyes and direct dyes
Acid dyes have complete chromatograms, bright colors, and the light fastness and wet fastness vary greatly with the variety of dyes. Mainly used for dyeing wool, silk and nylon, but also for leather, paper, ink, etc. Generally no coloring power to cellulose fibers.Direct dyes have water-soluble groups such as sulfonic acid group (-SO3H) or cause group (-COON) arranged in a linear molecular structure. The aromatic ring structure is in the same plane, so the direct dye has a greater affinity for cellulose fibers, and it can be dyed directly in a neutral medium as long as the dye is dissolved in dry water.Compared with the two, acid dyes have a simple structure and lack long conjugated double bonds and a flat structure, so they lack directness to cellulose fibers and cannot be used for dyeing cellulose fibers.
Latest news and deals directly to your inbox subscribe for updated

leave a message

leave a message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

home

products

skype

whatsapp