There are many types of clothing thermal transfer. Common thermal transfer methods are mainly divided into two categories:
(1) Sublimation heat transfer
(2) Heat transfer heat transfer
Sublimation heat transfer is to print (or print) disperse dyes (or sublimation inks) on a specific paper in advance with a machine, and then use this paper to transfer the patterns on the paper to the printing material using high temperature and high pressure. Go up the fabric and complete the entire thermal transfer printing process.
However, with the development of science and technology, the industry has made some refinements, allowing transfer printing methods to emerge in an endless stream. The most prominent is that paper is also used as a transfer printing carrier, but the printing method uses gravure printing presses to print disperse dyes as the mainstream.
According to the market demand of transfer printing, the printing methods with the most uses are as follows:
(1) The advantages of gravure printing machine for printing disperse dyes are low cost of printing paper, exquisite pattern expression, strong layering, and full pattern. Suitable for mass transfer printing production. The disadvantages are high cost of plate making, insufficient competitiveness for small batches of personalized products.
(2) The offset printing machine prints the offset printing sublimation ink, and the printer prints the sublimation ink. After it dries naturally, use this decal paper to transfer to the fabric to be printed. Advantages: Because it uses ps printing, the printing cost is low, and the printing cost is also low, which is suitable for printing small batch products. Disadvantages: The color depth after printing is difficult to be well controlled. If you want to make clothing thermal transfer, you have to think about it. Because any piece of clothing is made of at least two pieces of cloth, just imagine: before and after the clothing When the color of the pieces is quite different, how can this dress be sold? How to wear it?
(3) Digital thermal transfer, advantages: The pattern expression is more delicate than any transfer printing, the layering is extraordinarily strong, the pattern is unusually full, and because of the non-plate printing, the inaccuracy of the color registration caused by other printing methods is eliminated or the drawbacks of the Cypriot version. Disadvantages: Although there is no printing fee, the cost of printing ink and paper is high. So far, it is only suitable for small batches of personalized products for transfer printing.
(4) Silk-screen sublimation ink. This transfer printing method has low cost of plate making, and the sublimation ink is not expensive. However, because the printing plate is a silk-screen version, burrs are generated on the edge of the pattern, which is not suitable for delicate patterns such as figures and landscapes. print.
Heat transfer
Different from the sublimation heat transfer printing method, the printing material does not produce sublimation (vaporization) like the sublimation dye. The printing material will not print high temperature and high pressure to cause the slurry to penetrate the fabric fiber, although it can also be pressed with a transfer machine, but what is "printed" on the surface of the clothing is like a layer of "plaster" attached to the surface of the clothing.
Its main feature is that the base material used is mostly pet sheet. After printing patterns of various colors on the pet sheet, hot melt adhesive must be applied to the back of the pattern. It is this hot melt adhesive that connects the pattern with the pattern. The clothes are firmly combined, and the pet waste film is removed to complete the thermal transfer process.
The advantages of thermal transfer heat transfer: low cost of plate making, full pattern layer, beautiful color. Disadvantages: The air permeability is poor after being transferred to the garment, and the hand feel is not as soft as sublimation heat transfer.