Full aqueous pigment printing paste preparation should pay attention to
2013.09.13 08:391. Prescription OK.Although synthetic thickeners compatibility with acrylic adhesive,but their variety,so be selected in accordance with compatibility components,materials used and their prescriptions,while also considering printing equipment,printing fabrics and other factors,to select the best processes.?xml:namespace>
2. According to different situations,one-step or two-step method.Step is a direct dubbed colorants,thickening open after printing for rotary screen printing machine printed artwork.Two-step is made?prior to thickening and emulsifying similar pulp slurry,according to conventional color operation to adapt to small quantities of flat A platen printing and manual printing.
3. Generally without catalyst.Because synthetic thickeners in curing the release of ammonia from the polymer,leaving free polyacrylic acid,which generates the desired coating fixing acidic conditions.If the process on the need for additional catalysts or accidentally encountered electrolyte leaving the paste viscosity decreased,can additional synthetic thickener,viscosity can be restored.
4. A gel problem.Especially black paint was significantly,the amount of the individual coating slurry 809/L or more can occur,which is a synthetic thickening of pulp deficiencies.Britain's low viscosity synthetic thickener colloidal AlcoprintPTH gel can completely solve the problem.Currently semi-emulsion slurry generally more prudent.
5. The infiltration of.Full aqueous phase prior to swimming in the drying pigment printing while showing a shift "color halo" phenomenon,which in blended yarn fabric is more obvious,and paste in the relevant high water content.And adding the appropriate amount of thickener to increase the low HLB value of the class of silicone additives,basically overcome the infiltration of generation,of course,and the operation of the printing apparatus with the also very important.
By Sabrina