A preparation method of anti-counterfeiting fiber used for paper-making
A technology of anti-counterfeiting fibers and fibers, which is applied in the field of papermaking, can solve the problems of high price, high cost and waste of anti-counterfeiting fibers, achieve great practical value and reduce production costs
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Embodiment 1
[0025] An anti-counterfeit fiber for papermaking, prepared by the following method:
[0026] (1) Disperse and dilute NBKP (bleached kraft softwood pulp) to a concentration of 0.5% to 1.0%, filter and screen sequentially with 10 mesh, 30 mesh, and 50 mesh screens, and give a certain stirring speed during filtration to make fine fibers Drain as much as possible to retain long and thick fibers; then wring out the prepared fibers to a certain extent to test their actual dryness;
[0027] (2) The fiber obtained in the previous step is dyed with basic dye RED (provided by Basf), the amount of dyestuff is 30% of the absolute dry weight of the fiber, and the amount of color fixing agent (quaternary ammonium salts, provided by Transchem) is the same as that of the dyestuff; dyeing The conditions are water bath: 70°C, reaction time: 30min, stirring 200rpm / m;
[0028] (3) Wash the fibers dyed in the previous step. Washing conditions: use 40°C-60°C warm water and detergent to wash repeat...
Embodiment 2
[0031] An anti-counterfeit fiber for papermaking, the preparation method is as follows:
[0032] (1) N-BCTMP (long-fiber mechanical pulp) is dispersed and diluted to a concentration of 0.5% to 1.0%, filtered and screened successively with 10 mesh, 30 mesh, and 50 mesh screens, and a certain stirring speed is given when filtering to make fine fibers Drain as much as possible to retain long and thick fibers; then wring out the prepared fibers to a certain extent to test their actual dryness;
[0033] (2) The fiber obtained in the previous step is dyed with basic dye BLUE (provided by Basf), the amount of dye is 50% of the absolute dry weight of the fiber, and the amount of color fixing agent (quaternary ammonium salts, provided by Transchem) is the same as that of the dye; dyeing The conditions are water bath: 70°C, reaction time: 30min, stirring 200rpm / m;
[0034] (3) Wash the fibers dyed in the previous step. Washing conditions: use 40°C-60°C warm water and detergent to wash ...
Embodiment 3
[0037] (1) Disperse and dilute NBKP to a concentration of 0.5% to 1.0%, filter and screen sequentially with 10 mesh, 30 mesh, and 50 mesh screens respectively, and give a certain stirring speed when filtering, so that the fine fibers can be lost as much as possible, and the long and thick ones can be retained fiber;
[0038] (2) The fiber obtained in the previous step is dyed with reactive dye RED (provided by Transchem), the brewing concentration is 5%, and the dye dosage is 30% of the dry weight of the fiber; water bath: 70°C, reaction time: 60min, stirring 300rpm / m ;
[0039] (3) Wash the dyed fibers, washing conditions: use 40°C to 60°C warm water plus detergent to wash repeatedly until the water flow is clear;
[0040] (4) drying the washed fibers at 40° C. to 50° C. for 10 hours to obtain anti-counterfeiting fibers for papermaking.
[0041] Use the dyed Red / Blue fiber prepared by the present invention to make general anti-counterfeit paper types with paper machine, the...
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