Q & A on the hottest paperless heat transfer print

Q & A on Paperless heat transfer printing technology

Q: what are the traditional textile printing methods

answer: at present, there are two main printing methods of textile fabrics: screen printing and heat transfer printing

screen printing also includes lithographic printing and circular printing. Its working principle is to coat the part without pattern according to the pattern pattern, forming a pattern with eyes, and directly leak the color paste on the fabric through the pattern eye to complete the fabric printing process. The fabric with patterns is then steamed, fixed, soaped and washed to get the finished product. This printing method is mature in both technology and equipment, and the production capacity can reach 60 meters/minute. The main drawback of screen printing is that it consumes a lot of water (3~5m3/100 meter cloth), which will produce a lot of sewage

heat transfer printing is a new water-saving printing and dyeing process developed in the 1960s, which has been industrialized. The process is to make the dye into ink, then print the heat transfer printing paper, and then stick it to the front of the cloth. Press it for dozens of seconds under a certain temperature and pressure, and the patterns on the paper will be transferred to the fabric. In this way, the printed cloth does not need to be steamed and fixed, soaped and washed, so the printing process does not consume steam, coal, water, and does not produce sewage. However, there are two major problems in the process of adjusting the spacing to connect the control console by relying on the movement of the console: printing 1 meter cloth requires 1 meter paper, which not only takes up the cost, but also causes indirect water consumption and water pollution; Only polyester fabric can be printed, and the application area is limited

ask: what is paperless transfer printing? What is the difference with traditional printing

answer: paperless heat transfer printing first makes dye into printing paste, and then prints the pattern on a special substrate by printing, and then pastes it with the fabric through the hot zone, and the pattern on the substrate in the hot zone is transferred and fixed on the fabric to obtain the finished printing product. Among them, the substrate can be reused

the main characteristics of paperless heat transfer printing process include: no steaming, color fixing, soaping and water washing, no steam, coal, water consumption in the printing process, and no sewage; No paper consumption, no indirect water consumption and water pollution caused by paper consumption; The printed patterns are fine, clear, rich in layers and natural, and can print products similar to photos and painting styles

Q: what are the advantages of paperless transfer printing

answer: the outstanding advantage of paperless heat transfer printing process is to save energy from the source, especially precious water resources, which is in line with the national strategic policy of sustainable development. 5182-o

these precision values produced by the printing and dyeing process can reach a maximum of plus or minus 0.5. Nearly 50% of the cost is energy consumption. Saving energy means reducing production costs, and it can produce high-grade products that are difficult to produce by traditional printing processes

Q: what are the working principles and varieties of bridging agents

answer: natural fibers such as cotton are hydrophilic, while disperse dyes that can be heat transferred are hydrophobic, so it is difficult to combine the two, so natural fabrics cannot be directly heat transferred. One end of the bridging agent can be combined with the fiber, and the other end can be combined with disperse dyes, that is, a bridge is built between disperse dyes and natural fibers, so as to realize the heat transfer printing of natural fiber fabrics

there are currently three varieties of bridging agents, which are used for pure cotton, polyester cotton and silk respectively

paperless heat transfer printing machine

Q: how feasible is the industrialization of this technology

answer: the prototype trial production of paperless heat transfer printing machine is the core link of whether the process can be industrialized. All possible problems and problems that have been considered in advance should be solved one by one. Solutions should also be worked out for the newly found problems in the machine amplification. Only in this way can the trial production of industrial machine be successful

at present, the commissioning of the prototype of paperless heat transfer printing machine is nearing the end. The successful trial production of the prototype proves that the industrialization of paperless technology is feasible

Q: what is the development trend of paperless transfer printing market

answer: the paperless heat transfer printing process was proposed by the research group of Beijing Institute of fashion. After nearly 10 years of research and supported by the national "Tenth Five Year Plan" 863 plan, after 3 years of research, a breakthrough has been made in Paperless machine, which has laid a good foundation for the success of paperless process. It is expected that the future development trend will be more optimistic