Technological principle of reactive dye printing w

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Process principle of reactive dye printing by pigment pullout

2011 (1) process principle: use a strong reductant to destroy the ground color of the dyed reactive dye during printing, but the strong reductant cannot destroy the paint, or slightly destroy the paint system without affecting production

(2) common problems and solutions in production:

① unsmooth printing. Improve through the following methods: add a little better cotton brightener to brighten the color; Add 5% high-quality white cover to cover the dirty ground color; After the process is fully soaped and cleaned as much as possible, the dye residue of enterprise function can be improved

② pullout failure. Usually, this is not caused by the failure of the carving block before steaming, and the reason must be found from the operating procedures and process parameter control

③ residual formaldehyde. Formaldehyde produced after the decomposition of carved white blocks will remain on the fabric. At present, the only way to solve this problem is to strengthen post washing. Two times of high-temperature soaping can solve this problem

④ pull out the white edge. The white edge of the pullout, that is, the protective trick of the scroll spring fatigue testing machine. Type 1: halo is a phenomenon that is easy to appear in the pullout production. In fact, it is caused by the damage of the pullout paste by the pullout agent, which causes the color paste to seep. The following pull-out printing pastes can be used:

pull-out coating x (609/L)

pull-out adhesive 10131 ‖ l+4x

pull-out crosslinker 30 ‖ l

thickener Pt R30 ~ 509/L

basically, it can meet the requirements of ordinary plastic raw material processing and plastic waste processing and molding. Carved white blocks are 60 ~ 1509/L

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