The process of patterning a dye or paint on a fabric by screen printing is called fabric silk screen printing. With the rapid development of screen printing technology, special printing technologies such as foam printing, fluorescent printing, luminous printing, pearl printing, conversion effect printing, electro-aluminum transfer printing, electrostatic flocking transfer printing, etc. have also been correspondingly developed, which makes the application of fabrics. The scope is broader. Various colorful fabrics are more practical, but also have a certain degree of artistic appreciation.
However, in order to obtain an ideal textile screen product that meets the design requirements, in addition to the reasonable selection and deployment of printing materials, the positioning and registration of the fabric should also be taken into consideration during printing. Because of its soft texture, the positioning of the silk screen and the accuracy of overprinting also have a great influence. An introduction is made on the positioning and registration of textile screen printing (suitable for manual screen printing).
First, silk screen positioning method
There are two kinds of screen printing methods: one is fixed screen, and the substrate moves. The other is screen movement (running version), the substrate is fixed. There are many ways to position it;
1. Backing
For a substrate with a certain thickness and a neat edge, its vertical and horizontal edges can be positioned against the backing fixed on the console.
2. Hole method
For holes with substrate, can be identified as 2-3 holes as positioning holes, set on the console fixed nails (nail height lower than the thickness of the substrate) for positioning.
3. Illumination
The work surface is made of a material with good translucency, such as glass, and is equipped with lights below. For a substrate with a certain transparency, rely on light to align and overprint the baseline on the substrate and the baseline on the operator table.
4. Suction method
For small or thin substrates, suction holes in the suction cup on the operator's table suck and position.
5. Bonding method
The operator table is coated with adhesive to stick the substrate and positioned in this way.
6. Plate method
Screen printing is performed by screen movement (running version), the substrate is fixed in advance on the long operation board, and the regular holes on the screen match (can be inserted)
Second, the positioning of fabric screen printing
1, for a small area of ​​a certain thickness and hardness of the fabric, such as clothing trademarks, brims, shoes, children, etc. can be used for the positioning method. If the substrate is too soft, the substrate can be sizing without compromising the screen printing effect and the effect of the screen printing product.
2, for the clothing sheet, sheets, towels, pillowcases, drapes, curtains, tablecloths and other large-area fabric printing, substrates are relatively soft, the use of platen positioning (running version) screen printing is appropriate.
Third, the Taiwan plate method positioning
1. Platen structure
The platen is erected on the foot of wooden, iron or cement bricks, with a height of about 0.7 meters. Countertops are covered with artificial leather, flat and tight, and seamless. Underneath the artificial leather is a cotton velvet blanket, which gives it a certain degree of elasticity. On the side of the table reserved for regular holes. There are sinks on both sides of the high-level operator's desk, and drains are provided at the table top to wash the plate with water at the end of screen printing.
The length of the platen depends on the area and quantity of the substrate, the drying speed of the printing material, the number of overprints, and the production conditions. The long platen is over 100 meters. The length of the platen is conducive to overprinting for large-scale production. If it is limited by the length of the factory building, a few more short platens can be set up to solve the problem.
In order to improve the utilization rate of the platen, especially for overprinting, the indirect steam pipe or the heat of the electric heat pipe is often installed under the tabletop so that the temperature of the tabletop can be maintained at about 45°C. This is often referred to as hot platen screen printing. Unheated cold platens are usually used. Special printing on the hot platen screen printing should pay attention to the final screen printing effect.
However, in order to obtain an ideal textile screen product that meets the design requirements, in addition to the reasonable selection and deployment of printing materials, the positioning and registration of the fabric should also be taken into consideration during printing. Because of its soft texture, the positioning of the silk screen and the accuracy of overprinting also have a great influence. An introduction is made on the positioning and registration of textile screen printing (suitable for manual screen printing).
First, silk screen positioning method
There are two kinds of screen printing methods: one is fixed screen, and the substrate moves. The other is screen movement (running version), the substrate is fixed. There are many ways to position it;
1. Backing
For a substrate with a certain thickness and a neat edge, its vertical and horizontal edges can be positioned against the backing fixed on the console.
2. Hole method
For holes with substrate, can be identified as 2-3 holes as positioning holes, set on the console fixed nails (nail height lower than the thickness of the substrate) for positioning.
3. Illumination
The work surface is made of a material with good translucency, such as glass, and is equipped with lights below. For a substrate with a certain transparency, rely on light to align and overprint the baseline on the substrate and the baseline on the operator table.
4. Suction method
For small or thin substrates, suction holes in the suction cup on the operator's table suck and position.
5. Bonding method
The operator table is coated with adhesive to stick the substrate and positioned in this way.
6. Plate method
Screen printing is performed by screen movement (running version), the substrate is fixed in advance on the long operation board, and the regular holes on the screen match (can be inserted)
Second, the positioning of fabric screen printing
1, for a small area of ​​a certain thickness and hardness of the fabric, such as clothing trademarks, brims, shoes, children, etc. can be used for the positioning method. If the substrate is too soft, the substrate can be sizing without compromising the screen printing effect and the effect of the screen printing product.
2, for the clothing sheet, sheets, towels, pillowcases, drapes, curtains, tablecloths and other large-area fabric printing, substrates are relatively soft, the use of platen positioning (running version) screen printing is appropriate.
Third, the Taiwan plate method positioning
1. Platen structure
The platen is erected on the foot of wooden, iron or cement bricks, with a height of about 0.7 meters. Countertops are covered with artificial leather, flat and tight, and seamless. Underneath the artificial leather is a cotton velvet blanket, which gives it a certain degree of elasticity. On the side of the table reserved for regular holes. There are sinks on both sides of the high-level operator's desk, and drains are provided at the table top to wash the plate with water at the end of screen printing.
The length of the platen depends on the area and quantity of the substrate, the drying speed of the printing material, the number of overprints, and the production conditions. The long platen is over 100 meters. The length of the platen is conducive to overprinting for large-scale production. If it is limited by the length of the factory building, a few more short platens can be set up to solve the problem.
In order to improve the utilization rate of the platen, especially for overprinting, the indirect steam pipe or the heat of the electric heat pipe is often installed under the tabletop so that the temperature of the tabletop can be maintained at about 45°C. This is often referred to as hot platen screen printing. Unheated cold platens are usually used. Special printing on the hot platen screen printing should pay attention to the final screen printing effect.
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