10 Textile Printing Processes – By FOPU Socks Manufacturer
As a socks industry supplier, we encounter many customers have the need to print logo or other patterns, so today we talk about some printing processes.
1. Glue Printing Process
The glue printing process uses special chemical gels to blend highly seamlessly with dyes. Dye through gel medium, firmly adhere to the fabric, glue printing process overcomes the limitations of water paste printing. It can be printed on blended fabrics of cotton, linen, viscose, polyester, nylon, polypropylene, chloroprene and various fibers, as well as on leather, artificial leather and other materials.
Ink-jet printing, rotten flower printing, electrostatic flocking printing and other printing process. The biggest advantage of glue printing process is widely used, beautiful color, high degree of reduction, but its printing process is more complex than water pulp printing process, the cost is relatively high.
The appearance and wide application of glue paste after water paste because of its coverage is very good, so that dark clothes can also be printed on any light color, and a certain degree of gloss and cube sense to make the clothing look more high-end, so it has been rapidly popularized, almost every graphic T-shirt will use it. But because it has a certain degree of hardness, so it is not suitable for large area of field pattern, large area of pattern is best to print with water slurry, and then dotted with some glue, so as to solve the problem of large area of hard glue slurry, but also can highlight the sense of hierarchy of the pattern; There is also a method is to steal a large area of field design, make it rotten effect, but always wear a little hard, so it is better to combine water and glue to solve the problem of large area printing.
2. Water Slurry Printing Process
Water slurry printing process is one of the most basic printing process in the screen printing industry, which can be used in cotton, polyester, hemp and so on, almost all the light background fabric printing, is very widely used. It works in a similar way to dyeing, except that it “dyes” an area of the fabric into the desired color of the flower position. Therefore, the biggest advantage of this process in the dark background fabric can not be applied to the waterpulp printing process is that it is widely used, the color fastness is very good, and can be used to print a better effect at a relatively low price. The limitation of the waterpulp printing process is that it can not be applied to all dark fabrics.
3. Thermochromic Printing
The early thermochromic printing has used thermochromic dye processing into microcapsules, printed on the fabric, it has reversible and irreversible two categories. Irreversible thermochromic dyes are commonly used as temperature indicators. It is generally reversible for use on textiles. According to its structure can be divided into inorganic and organic two categories, organic thermochromic dyes are widely used in textiles, it is composed of cryptochromatic dyes, chromogenic agents and sensitizers (desensitizers).
Cryptochromatic dyes are some substances that combine protons to produce color, such as lipids and pentagalamine compounds, which serve as electron donors in the color-changing system. Chromogenic agent is a kind of acid-releasing characters that can release protons, such as phenols, carboxylic acids, halogenated alcohols and so on, which are electron-absorbing compounds. The discoloration system of cryptochrome dye and chromogenic agent can achieve the discoloration effect in a special solvent. The molten body of this solvent has good solubility of dye and chromogenic agent, and can enhance the thermal sensitivity of the system, so it is called sensitizer (desensitization agent). Sensitizers are generally fusible fatty alcohols, fatty acids and their esters, aromatics and their ethers and ester compounds, and directly determine the color change temperature.
4. Gold and Silver Stamping Process
Hot stamping silver pressed is the traditional means of binding beautification, often used in many paper packaging, and screen printing hot stamping silver pressed is a new type of technology, the principle of which is to join in this paste special chemicals, flower who brings out the special beautiful gold and silver, and lasting color samples, do not fade, can be printed on many kinds of fabric, the cost is lower than than the traditional process, It is a very ideal printing decoration technology.
Crystal coating material of golden light printing paste with special crystal as the core, coating layer of gloss, titanium film layer and metal luster deposition layer can be exposed to the air for a long time will not darken, with good weather resistance and high temperature resistance, feel very good after printing. And the use of mica coated silver printing paste, improved the durability of aluminum powder, mica coated body silver printing paste is basically similar to mica titanium pearly printing paste, is the temperature at which the titanium membrane coated continue to improve, to like a silver light, titanium coated membrane layer thickness is different, can diffraction with the silver beams of different colour and lustre. Mica coated silver printing paste is chemically compatible and has good fastness to all aspects of the fabric and can retain a long silvery glow.
5. Foaming Printing Process
Foam printing is also known as three-dimensional printing, foam printing process is developed on the basis of glue printing process, its principle is to add a certain proportion of high expansion coefficient of chemical substances in glue printing dye, printing position after drying with 200~300 degrees of high temperature foaming, to achieve a similar “relief” three-dimensional effect, Foaming printing process depending on the requirements of the substrate to do high, medium and low foaming effect sub points. Foaming printing printing process is the biggest advantage of a strong sense of three-dimensional, printing surface prominent, expansion. Widely used in cotton cloth, nylon cloth and other materials.
Foam printing paste has developed for the physical foaming pulp and chemical pulp foaming two big series, physical foaming pulp mainly contains microcapsule preparation, storage in the microcapsule preparation has a low boiling point solvent when temperature increases, the micro capsule preparation of organic solvent gasification quickly, the micro capsule, swell the micro capsule mutual extruding, cause irregular distribution of overlap, so the surface is rugged, It is also called fleece printing. There are two types of chemical foaming pulp: one is thermoplastic resin and foaming agent composed of color paste. The other is a color paste composed of polyurethane and solvent thickener. However, the solvent in the printing paste on the latter fabric needs to be recycled, which brings certain difficulties to the printing factory, so the former is generally used now. You can chekc out our soccer jersery here Soccer Jersey Sets
6. Photosensitive Color-changing Printing
Photosensitive color printing is also known as photosensitive color printing. The early photochromic printing is photosensitive dye in the ultraviolet radiation under the dye structure changes, presenting different color. For example, dye A is colorless. When exposed to ultraviolet light, the molecule opens to A cyanine structure called dye B, which is blue. When exposed to visible light, dye B changes back to colorless dye A.
Microcapsule technology is now used to coat the photovarying dye in the capsule, the general particle size is 1-10 microns, with microcapsule coated photovarying dye, its light fastness is greatly improved. At present, light dye has been developed to have four basic colors: purple, blue, yellow, red.The initial structure of the four phototropic dyes is closed loop, that is, no color is printed on the fabric, but can change into purple, blue, yellow and red under ultraviolet light. The so-called photochromic change from one color to another color, is in the printing paste of light dye and general color paint together after printing. For example, the printing appears blue on the surface of the fabric after being mixed with dye red and paint blue, and turns blue and purple under ultraviolet light.
Today, the development of polychromatic dye has to 15 kinds of basic color and variety can spell mixed each other, chromatography is complete, also can spell with color paint mixed, so the polychromatic dyes can not only by the colored to colorless, can also be changed from one color to another color, color changing the temperature of the residence time is becoming more and more sensitive by the original color temperature is more than 10 ° C, The residence temperature developed to the present discoloration is less than 5°C. Like this training shirt CLICK ME
7. Water Printing Process
Water printing process is a new printing process, using a variety of physical and photochemical principles, using this process to produce products. When the fabric enters the water, the material on the fabric changes with the water in a complex instant, presenting a pre-set rich pattern. When the water on the surface of the fabric evaporates, the original pattern is revealed again. This kind of craft can be widely used in beach pants, swimsuit, raincoat, two umbrellas, large signs, advertising and other numerous media printing design, the production of “magic changing swimsuit” and a series of changeable, amazing color products. It has an extremely broad market.
8. Flocking Printing Process
Electrostatic flocking printing process is one of the three-dimensional printing process. Its principle is the high strength compound resin adhesive with the silk screen containing the required flower transfer to the substrate surface, and then let the fiber nap through hundreds of thousands of volts of high voltage electrostatic field charged, so that the nap vertical and uniform fast “hit” to the adhesive, in the surface of the fabric “shop” on a layer of nap, and then through high temperature curing. It is widely used in sofa fabric, packaging box, shoe fabric, decoration, toys, industrial electrical parts protection and so on. The nap is covered on the surface of the object, not limited by the shape and size of the plant, the flocking process printed products have a strong three-dimensional sense, bright color, soft feel, not down, friction resistance. Cotton, silk hemp, leather, nylon cloth, all kinds of PVC, denim, rubber, sponge, metal, foam, plastic, resin non – protective cloth and so on can be printed.
The adhesive chosen by flocking plays an important role in the printing and dyeing post-processing industry. Commonly used adhesives are divided into diplomatic adhesives and self-crosslinking adhesives. Diplomatic binder contains carboxyl group (-COOH) or amide group (-C-NH2), amino group (-NH3) in its molecule, which can be crosslinked with the functional cause of the added crosslinking agent. During film formation, the villi can be fixed on the base cloth by reacting with the external binder to form a net-like skin film.
The selection of adhesive generally should pay attention to the following points: 1, the grey cloth and pile knot force; 2. After flocking, the feeling is soft, and the surface is suitable for film forming, so as to facilitate flocking; 3, the viscosity is moderate, so as to facilitate spraying, coating and scraping on the blank cloth; 4, good chemical stability, good weather resistance and washing resistance; 5, easy to operate, add a small amount of viscosity regulator can adjust the viscosity; 6, non-toxic harmless, not easy to burn.
9. Fragrance Printing Process
Fragrance printing process is the use of special technology, so that the printed product printing part has a special process of fragrance. The processing technology of fragrance printing is similar to the usual printing process, but when the fragrance capsule is mixed with the appropriate adhesive paste, it can be used as long as the aroma capsule, the adhesive printing paste and the printing fabric have good compatibility. Through the screen printing method, the printing paste is applied to the surface of the fabric and then dried. It not only makes people visual enjoyment of the United States, and on the sense of smell to get happy satisfaction. This kind of product is limited to use on printed cloth at the beginning because it is welcomed by consumers, and gradually developed to use on clothing, bed sheets, handkerchief, socks, and other textiles. At present, the concept of fragrance printing has been developed as “breath printing” over time, because it is not just a simple pursuit of the effect of fragrance. It also contains a variety of natural smell, such as forest smell, pine resin smell, pea flower smell. The characteristics of these smells are similar to those of nature, making people feel happy to return to nature.
The principle of fragrance printing process is to use liquid essence or other organic solution, so that the essence can be evenly miscible with colored printing coating pulp, and fixed on the fabric with the help of adhesive in the coating. Due to the organic components in the essence of volatile, volatile chemical properties of compounds, the essence composition is very complex, in use and storage period volatile dispersion or decomposition metamorphism. Therefore, the preservation and control of flavor has become the focus of research and development. In order to protect the flavor from the influence of external environmental factors, control or prolong its release period, to achieve the purpose of the use of flavor, the best way is to microcapsule the flavor, microcapsule technology is a film forming material to the solid or liquid coating to form small particles technology.
10. Fluorescent Printing Process
Fluorescent printing process is a new special printing process. The principle is to use a special process, the light storage type of spontaneous light material into the fabric, through the absorption of all kinds of visible light to achieve automatic luminous function, which can be used indefinitely. Products do not contain any radioactive elements, can be used for a variety of purposes, evenly distributed in a variety of transparent media, plastic, ceramic, glass, etc., to achieve the self-lighting function of the medium, and can show the bright color of the pigment, showing a good low-degree emergency, indicating signs and decorative beautification effect.
In terms of technology, there are: printing process of fluorescent paint, direct printing of fluorescent paint and ordinary paint, direct printing of fluorescent paint and reactive dye, ground color discharge printing of reactive dye, phthalocyanine anti-dyeing printing.
The factors affecting the fluorescence of sunlight fluorescent coating are: (1) the whiteness of printed fabric: the whiter the fabric, the more clean the cloth, the better the reflection of light, the better the fluorescence, printed on white cloth fluorescence is better than color cloth, printed on mercerized bleached poplin, fluorescence is better; (2) adhesive: the better the transparency of the adhesive film, the better the fluorescence. In the molecular structure of adhesive component, the electron vibration is suitable to the electron vibration in the molecular structure of fluorescent coating, and the fluorescence degree is good. (3) Fluorescent coating dosage: the increase of the dosage is conducive to the improvement of fluorescence, but when the dosage of fluorescent coating reaches 0%, the fluorescence reaches saturation; (4) color: such as fluorescent paint and ordinary paint mix to adjust the color, the fluorescence will be greatly reduced.
All kinds of luminous products made of fluorescent printing process are absolutely safe to be used in daily consumer goods, such as clothing, shoes and hats, stationery, clocks, switches, signs, fishing gear, handicrafts and sporting goods. And in the building decoration, transport, military facilities, fire emergency system such as: import and export signs, escape, lifesaving route indication system has a good role.
Fluorescent printing is one of the traditional methods of textile printing to further promote the fluorescent coating printing should also be made efforts from the following aspects: ① improve the tinting force of fluorescent coating, the current use of fluorescent coating is high, resulting in the depth of the printed pattern is difficult to open; ② Continue to develop chromatography of fluorescent coatings; ③ Need to improve the fluorescence, solution. The fluorescence of sapphire, green and green lotus is low. ④ Special adhesives and thickeners for fluorescent coatings can be developed to improve printing fastness and color brilliance.
Post time: Mar-10-2022