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Contest between the traditional and direct sublimation printing
发布日期:2012/3/13 点击率:1406

Contest between the traditional and direct sublimation printing

 
Textiles seems to become overnight one of the most welcome screen printing substrates, this print popular to a certain extent, exacerbated by competition between traditional and direct sublimation printing technology. Dye sublimation is different from other large format inkjet printing process technology, it is not only able to produce vivid colors, but also to reproduce the very rich image detail. Today, we explore the differences between these two dye-sublimation technology, as well as their respective advantages and disadvantages.

    
Traditional and direct dye-sublimation technology

    
Traditional digital dye-sublimation process uses a digital presses to produce a reverse image on a transfer paper, then the use of heat transfer this image to the final substrates, the substrates can be polyester or other polyester or polyester-coated materials. Traditional dye-sublimation process commonly used water-based, solvent-or oil-based dye-sublimation inks, and can use these inks to expand the color gamut of the printed matter.

    
Sublimation is a substance from solid to the process of the body, the middle has not gone through the liquid process. Dry ice at room temperature into a mist, is a typical dye-sublimation process.

    
The dye-sublimation ink on the transfer paper by a temperature of 356-410 ° F (180-210 ° C) between the heat transfer machine transfer to the final substrates. The role of high temperature and pressure, the dye will become a gas to penetrate into the fibers, and ultimately curing textiles. When the heating temperature exceeds 390 ° F (200 ° C), dye-sublimation ink will immediately become a gas. In addition, the heat also can open a polyester or polyester-coated substrate surface holes, dye sublimated into gas to penetrate into the material inside. Stop heating, sublimation ink is cooled to a solid, the gap will be closed on the polyester material. If done correctly, the printed image will not fade, cracking or aging.

    
The traditional dye-sublimation method is the first digital presses image printed on transfer paper, and then will transfer to the final substrates; direct sublimation sucked image is printed directly on the substrates do not need to use transfer paper. The special coating for direct sublimation textile fibers typically have a free flow of dye-sublimation ink, when the textile is heated, the ink will penetrate into the sublimation of textile fibers, thus forming a lasting image.

    
Textile direct printing (Direct-to-fabric printing) is a cost-effective high production methods, and allows ink to better penetrate into the fibers of the textile. However, iron-on transfers allow users to get better image quality, especially the image details and edges. Transfer images to give people a very real sense, the paper fiber absorbent is not so strong. However, flags and other textiles for the need for double-sided printing, direct sublimation method is an ideal solution.

    
Relative to the UV and solvent inkjet printing, dye-sublimation printing, the biggest advantage is its wide color gamut. POP advertising the vitality of the thermal transfer ink and high-density will give designers more choices.

    
When considering whether to use traditional or direct sublimation printing technology, we must think of the cost of equipment, image saturation and quality, consumable costs (ink and substrate), and labor costs, several major factors. Use some printing equipment to heat transfer machines, some of its own heating device, without human intervention. If you want a traditional dye-sublimation printing, you should be prepared at least one printer and a heat transfer equipment, and production costs will grow exponentially with the print size increases; If you want to direct sublimation printing, you can purchase only an on-line or multi-functional system.

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