Knitwear popular printing process analysis
  • 2017-08-08 13:33:57
  • admin
Knitwear design techniques for its varied and unique knitted texture combine to give consumers new visual effects and dress experience. Among them, more printing decorative techniques applied to become an important form of expression and innovative means of knitting product design. Moreover, compared to the dyeing and finishing of knitted garment printing fabric printing aspects of large-volume, long product life cycle and other characteristics, but also reflects a kind of tailor-made in small quantities and strengths, great to meet the people of the current fast pace of life and dress differentiation demand. Far less popular categories of knitted apparel printing and features to expand elaboration.
Knitwear popular printing process analysis

Knitted apparel printing process can basically be divided in accordance with different screen printing, transfer printing, hand-painted, and other major categories.


1. Screen Printing category
Screen printing is the most widely knitted garment printing technology. It is done using a screen plate, in the printed version of the publication membrane system (role play to prevent ink through) and the graphic (by scraping pressure force of the ink printed onto the substrate leak), thereby forming a printed pattern. The entire printing process including pre-computer color design - the film - drying nets - printing - drying several major steps.

General printing paste and water slurry is divided into two kinds of mortar, it is divided into offset printing and watermarks.


① water paste printing
Water paste printing is the most common of knitted apparel printing process, but also the screen printing industry, a basic printing process. It works similar to staining, the difference is that the fabric of a region which will be "dyed" color of flowers into the desired position. This process can print on almost all of the light background fabric. Water paste printing in an aqueous slurry of water-soluble resin syrup is used to reconcile the diluted paint pigment printed on the clothes with belonging aid itself does not show color, it was transparent and soluble in water. After drying in India, will dissolve in previous washing is completed, and the pigment is combined with the fabrics, insoluble in water, water paste printing parts will become soft after washing, fully consistent with the unprinted feel a sense of body parts.

Advantages: water paste printing from the feel, color brightness, color fastness, technology is very mature in terms of experience, etc., it is the most common printing process. More suitable for large prints, spend a good bit fastness, it can be relatively low price printed better results. Inadequate: the limitations of water paste printing process can not be applied in all dark fabrics. Multicolor printing water slurry prone to discoloration cased section. Suitable knitwear categories: mainly used white, light-colored knitted T-shirt printing and knitted underwear products.


② mortar printing
Screen printing paste printing but also ordinary one, it appears, and is widely used in water slurry after printing, because it has a gelatinous slurry coverage, thereby overcoming the limitations of water paste printing, and adapt to various color deep and printing materials. After drying a layer of plastic have a sense of the printed surface, and airtight, so the summer wearing a T-shirt, a bogey mortar printing a large area. A large area of pattern is best water slurry to India, then embellished some glue, so that both can solve the problem of large area hard mortar, but also highlight the layering pattern.

Pros: widely used, color reproduction and high, good texture, elastic and shiny, dark clothing that covers all the background, including black. Mortar printing without washing and steaming, in line with the current energy saving, upgrade policy guidance and with the current social advocacy of low carbon environmental protection concept coincide. Inadequate: the traditional feel hard mortar printing, poor ventilation. But with the optimization of the use of an adhesive coating paste, the formulation process, replacing water slurry printing mortar printing is becoming a trend. Suitable knitwear categories: common type coat knitted garments. But with the development of new pigment printing technology, especially low self-crosslinking binder of environmental marketing, as well as high-quality paint print silk products on the market in large numbers, so that people on dye printing mortar printing alternative ideas possible, thus forecasting such printing techniques in the field of knitwear non outerwear will also make a difference.


③ foam printing
Foam printing, also known as three-dimensional printing, is developed on the basis of the paste printing process, the principle is to add a certain proportion of the chemical substances of several high coefficient of expansion in mortar printing dyes, printing position by drying after with a high temperature of 200-300 ° C blistering, achieve a similar "relief" of the three-dimensional effect, and flexible, like foam sponge products.

Advantages: printing three-dimensional effect. Inadequate: only suitable for monochrome dot, line printing, block surface and is not suitable for network printing. And other forms of printing technology combine to achieve good results. Suitable knitwear Category: knitting sportswear and casual wear often used.


④ discharge printing

Discharge printing refers to discharge agent printed on colored fabrics, the part of the destruction of the pigment has been stained to obtain a variety of patterns, a pattern printing method. This method can be divided pattern is white (Stubbs white) and a colored pattern (pull printing) two. The latter staining pattern of fine fabric, but the process is complicated and costly. Discharge printing technology widely used in knitted T-shirt printing. Dendrite part discharge printing sheet discharge technique is used, can create a common fabric with a special pattern effects and mottled shades disorder, manifested a new experience in the visual and clothing style, increased personalized knitwear means of expression.


2. Transfer Printing
Transfer printing technology is popular these years a printing technique, the general principle is the first thermal transfer printing pattern printing (printing) to the transfer paper, then through high temperature and pressure of the pattern printed on the fabric. It is based on some of the characteristics of sublimation disperse dyes, select 150-230 ℃ sublimation disperse dyes, mixing it with a slurry made "color ink", according to the requirements of different designs, the "color ink" printing to transfer paper (which is a special paper, it said transfer paper), then the printed patterns of close contacts transfer paper and fabric, in the case of control of a certain temperature, pressure and time, dyes from printing paper transfer to the fabric, the fabric after diffusion into the interior, so as to achieve the purpose of coloring.
Thermal transfer printing is mainly for the production of polyester fabrics knitted garments, knitted garments and for cotton, wool, silk and other natural fibers prepared in how to carry out the transfer printing printing and processing, as a technical problem only recently research and industry, namely cold transfer printing technology, it is the first by a printing method suitable water-soluble dye ink (such as dyes or weak acid dyes), printed on special paper to be printed pattern or text, printed as a transfer printing paper. After the fabric by rolling base simultaneously with the transfer paper enters the transfer roller, then transferred the same printing operation and heat transfer printing paper is about to have one side with the dye ink adhesion printed fabric, and then by the pressure of the dye ink and peeled from the release paper from the transfer printing paper patterns or text is transferred onto the fabric. This type of fabric printing methods targeted, short process, pattern design freedom, fine printing pattern fidelity, excellent quality.

Advantages: The operation quickly and easily, no film, plate making, color and other complex front-channel technology, which makes even a single piece of printing small quantities of custom become a reality. Using computer output directly, enabling the production of photo-quality pictures printing, vivid colors. Inadequate: color fastness is relatively low, the high cost of mass customization. Feel and long fastness compared with screen printing are still gaps. In position also has great limitations, such as not suitable collar or stitch near the place. Also in the use of cotton-containing products as effective as chemical fiber fabric.


3. Hand-painted

Hand-painted with its unique maneuverability, ease of implementation, the freedom to convey facial designs. The operator can be directly used in the fabric painted acrylic paint or textile dyes can also be used to complete printing.


4. Other Features class printing
① flocking

Dimensional sense of strong, prints can be produced with different glossy subtle brightness changes by rich visual level effects. Its working principle is a high intensity light compound resin adhesive agent, a screen containing the desired flower bits transferred to the substrate surface, let fiber fluff by High Voltage Electrostatic Field charged hundreds of thousands of volts. Make hair vertical uniformly rapid "hit" to the adhesive, in the fabric surface, "shop" layer of fluff, and then by high temperature curing. Multi-application in the knitwear fashion paragraph.


② silver hot stamping

The application of this technology can make prints showing a novel metallic printing effects, dazzling and flash. The principle is adding special chemicals in the print paste is an ideal decorative printing processes.


③ Digital Printing
Digital printing is follow the trend of low-carbon environmental protection products, is the use of computer-controlled printing machine, directly dye injected into the fabric on the printing manner. High production efficiency and not patterns style, size, chromatic effects, photo effects can be achieved. However, due to high cost, therefore mainly used in high-grade knitted fabrics.
In addition, the production process of innovation surging application categories continue printing a new, light-sensitive, heat-sensitive pigment printing, luminous printing, printing flavor, such as printing photos on knitted garments to the consumer to create a rich and varied choice of dress, to meet people's differences in consumer demand, there is a good knitwear product development prospects.
Printing integrated process performance
Set forth above are commonly used in the dyeing process single knitwear. And diverse variety of cross innovation process but is uncommon. Combined aqueous slurry and silver hot stamping process, the foaming process and the glue binding the like. In addition, printing technology and other types of cross-border combination of decorative craft, but also expand the knitwear design. For example, glue craft and embroidered appliqué or disc knitted children's wear design uses a combination of flat and three-dimensional effect is highlighted, hot drilling printing process and binding and so on.
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