There are many factors that affect the quality of the roll cloth transfer process. And it is necessary to master the skills. Today,we are sharing you with several skills to ensure the quality of the roll transfer printing.
1.The transfer speed of roller heat press and the hot roller temperature should be adjusted properly. The temperature must wait for the temperature to fluctuate up and down three times after reaching the set temperature. And performe the transfer operation after the temperature is stable.
2.Depending on the weight or stiffness of the paper, fine tune the pressure between the felt and the hot roll.
3.To maintain the same degree of tension between the transfer paper and the fabric, stabilize the proper tension.
4.Before heat transfer printing, make a transfer sample to determine if the temperature and speed of the affected color are appropriate.
5.Before the transfer, we need to blow and defragment the printed surface of the transfer paper and the fabric to remove paper dust, cilia and other attachments.So as to avoid the print defects caused by the inclusion of these debris in the transfer paper and the fabric.
6.To ensure that the transfer paper is dry, the transfer paper with a large amount of moisture will generate a large amount of water vapor during the heat sublimation process. That will cause the transfer paper to soften and lose its stiffness, causing problems such as oblique walking and water ripple.
7.When transferring, you can cut the front of the paper and fabric into inverted V-shape to let the middle advanced. Or you can use the cardboard leading end larger than the width of the transfer paper. So that the entire surface can be smoothly and smoothly fed into the transfer machine. Avoid crushing and pulling leads to wrinkles on transfer.
8.During the transfer process, we should fast separate the paper. That will prevent the paper cloth from coming into contact with it to cause secondary sublimation transfer and ghosting.
9.Pay attention to the safety of the operation during the transfer process. Don’t be close to approach the hot roller and to avoid high temperature burns.
We believe that if you get the skills above,the quality of the roll transfer printing will be guaranteed.
Okay, these all above are my share about the skills when using roller transfer machine. Now, I believe that you must know how to use it correctly. Hope my article can be useful to you. If you have any other needs or questions about sublimation printing, welcome to contact us at any time. We will provide you the best quality product and service. Thanks for your reading.
As we know, there any many things will effect the heat transfer printing result during sublimation printing, today we will discuss the main factor.
1.Temperature and time
Sublimation transfer printing process requires temperature control in the 180 ℃ ~ 230 ℃ range, the time is about 10 ~ 30s, while paying attention to the reasonable allocation of temperature and time.
2.Sublimation ink
Sublimation transfer technology, the key material mainly by disperse dyes, connecting materials, solvents and a small amount of additives. Dyes should have good sublimation transferability and permeability. And reached a certain degree of fastness indicators, molecular weight of 23O ~ 380, sublimation temperature of 180 ℃ ~ 240 ℃ commonly used transfer printing dye anthraquinone dyes, azo dyes and cationic dyes and so on.
The connection material to the dye with a small affinity, easy to release dye gas, and the appropriate printability, preservation and thermal transfer adaptability, commonly used in the connection material for the low viscosity of ethyl cellulose, ethyl ethyl cellulose (EHEC), long oil modified alkyd resin. Commonly used solvents are turpentine, terpineol, high boiling alkanol, aralkane, cellosolve and so on.
3.Pressure
Pressure is also one of the important parameters of the sublimation transfer process. For example, if the pressure is too small, the gap between the fabric and the transfer paper is large, the yarn is round, the ink gas molecules collide with the air and escape, resulting in poor printing effect, while the ink is also easy But the pressure is appropriate, the yarn is flat and the transfer paper between the gap is appropriate, the transfer coloring effect is good, clear pattern, smooth lines Fine: If the pressure is too large, it is prone to deformation, fluff and heavy fabric morphological changes and other issues, resulting in rough and color rendering and other shortcomings. Therefore, the control of the transfer pressure on the printed pattern, clear pattern, visual effects and so very critical.
We FeiYue Digital Technology Co., Ltd mainly manages sublimation paper, inkjet printer, digital printing inks, calendering machines and accessories, operating digital printing industry has been more than 10 years experience. After continuous improvement of the product, to ensure product quality can also be profit at the same time to the minimum, to ensure that customers enjoy the best price and the best quality products.
Because transfer printing has many advantages and the products produced are also of great commercial value, it has developed rapidly since it was put into production in the 1960s. However, because it is only suitable for synthetic fibers with clear glass transition temperature, its development is hindered and can not be applied to natural fibers. How to solve the transfer printing problem of natural fibers has become a hot research topic at home and abroad.
1) Grafting denaturation, such as acetylation, benzoylation, etc. This allows the fibers to accept disperse dyes.
2) Surface polymerization. This method is to polymerize macromolecule materials on the surface of fabrics, so as to accept disperse dyes like synthetic fibers, such as polyester method, styrene method and so on.
3) Fiber expansion. Expansion phenomena in amorphous region of heated polyester fibers were simulated and disperse dye gas was admitted. However, the fastness is insufficient due to the lack of fixation with fibers. So this method can only be used in conjunction with other methods of fixing dyes. Polyethylene glycol (200 molecular weight) is generally used for fiber extrusion. It is not only an extruder for cotton fibers, but also a solvent for disperse dyes.
The common feature of the above methods is that natural fibre fabrics must be pretreated before transfer printing, which increases the production process and cost. More importantly, in order to clean the remaining non-functional materials on fabrics, it is necessary to wash and dry them. In this way, it is impossible to eliminate wastewater discharge and increase the consumption of heating energy, which makes it difficult to get rid of the heavy burden of traditional printing and dyeing production.
This natural fiber transfer printing method does not retain the characteristics of synthetic fiber transfer printing method, and is difficult to be accepted by manufacturers. Some methods still leave harmful substances such as formaldehyde on fabrics, which do not meet the requirements of environmental protection. In addition, after printing, many fabrics migrate over time, resulting in blurred patterns. Therefore, although this method has been applied, it is not ideal. Others use spraying pretreatment liquid on the part of natural fiber clothing and printing after drying.
More info:
Website: www.sublicalender.com
Company Name: Fei Yue Digital Technology Co.,LTD
E-mail: sales@feiyuepaper.com
Tel: 86-025-86628894
Address: Central Road 323, Nanjing, Jiangsu, China