Troubleshooting of the hottest ink in textile prin

2022-08-03
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Troubleshooting of thermosetting ink in textile printing technology

why thermosetting ink printing is not blocked and can be wet to wet printing

this is the biggest question for the traditional textile and garment printing industry. When they saw the high-speed production of the full-automatic garment printing machine (one piece in the fifth second), they were surprised; It was even more incredible when they saw that the thermosetting ink printing did not need to be cleaned, and they could continue printing the next day or even ten days a month later. Why? Because we all think that the printing paint must contain adhesives, and the adhesives must have viscosity (so they will stick to the plate before drying) and self curing (of course, blocking)

is plastisol ink a textile printing pigment? Certainly! But it is a new type of printing paint, that is, printing paint without any adhesive. And when it is necessary to provide more stable water quality in the use of pressure type, submerged ultrafiltration or membrane bioreactor (MBR), the thermosetting ink does not have the viscosity and self curing properties of the adhesive, so it has the conditions of never blocking and not sticking to the plate

having the condition of not sticking to the plate does not mean absolutely not sticking to the plate, because thermosetting ink is paste after all. In order to achieve high-speed wet to wet printing, we must also master the technology of dot printing with thermosetting ink

therefore, we know that textile printing coatings have been divided into two categories: adhesive and non adhesive. Thermosetting ink is non adhesive textile printing paint, and its accurate scale should be: hot melt cured PVC textile printing paint

what pattern is suitable for thermosetting ink printing

thermosetting ink can print any pattern, but printing fine patterns and three-dimensional patterns with hiding power is its unique advantage. This is also due to the characteristics of thermosetting ink itself. Thermosetting ink has the characteristic of non blocking, which makes it easy to print fine patterns, even when printing 0.2mm lines or 60 lines on dark fabrics. Compared with other textile printing coatings, thermosetting ink has another advantage, that is, its solid content is 100%, so the printing thickness of thermosetting ink is the thickness after curing. As long as enough thick impression plates can be made, three-dimensional graphics of the same thickness can be printed on one plate. Other textile printing coatings, whether water-based or solvent-based, have a solid content of less than 60%, or even about 5%. After water or solvent volatilization, the cured graphic thickness is only equivalent to its solid content

what is the relationship between thermosetting ink printing and digital technology

thermosetting ink is mainly used for spot printing, especially spot color spot printing. Without digital computer technology, it will be very difficult to separate and add patterns. Therefore, it is the rapid development of digital computer technology that makes dot printing popular

cmyk color separation point has become a very convenient and simple thing. As long as the personnel with basic computer operation skills can easily convert the color images in the computer to CMYK mode, and then set the added line number, angle and point shape in the output setting (page setting), and print or phototypeset the film

spot color spot printing is the most advantageous technology of thermosetting ink, and spot color separation is a special technology developed by digital technology for thermosetting ink printing, because it is not required in paper statistics sheet printing and textile match dyeing. The thermosetting ink has both hiding power and fine printing, so it has the conditions to print dot patterns on color fabrics. Now, the problem of color separation software needs to be solved. This problem was first solved in the United States, which has the most developed T-shirt industry. Two sets of spot printing color separation software, fast films and spot process, were launched successively. If there is no spot color spot printing color separation software, spot color spot printing will be very complicated and troublesome

curing conditions of thermosetting ink printing

in addition,

it has been said that thermosetting ink does not contain any adhesive, so how does thermosetting ink combine with textile fabrics? It depends on the temperature

the main component of thermosetting ink is chemical synthetic material: PVC base +100% solid

plastifier+ resin. It is a paste like solid at room temperature and does not contain any volatile components. But at the temperature of 130~160 ℃, the thermosetting ink begins to melt into a thick liquid, which will penetrate downward into the gap of the substrate (fabric fiber). At this time, the thermosetting ink in the form of thick liquid will solidify into a solid (note that it is no longer a paste like solid in the original state), and the solidified solid chemical compound is firmly integrated with the surface of the substrate it is immersed in, thus achieving the purpose of printing

it can be seen that the solid condition of thermosetting ink is to control the temperature well. Temperature determines the printing results of thermosetting ink, such as fastness (adhesion), softness and elasticity

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