Preparation method of offset paper
A technology of offset paper and sizing agent, which is applied in the direction of paper, water-repellent agent addition, and no pigment coating, etc. It can solve the problems of dirty back of printed matter, large production site, and slow drying speed, so as to shorten the drying time and improve production efficiency. Effects of increased speed and reduced waste
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Embodiment 1
[0019] Step 1: Preparation of oxidized starch solution
[0020] The oxidized starch is prepared into an oxidized starch aqueous solution with a mass fraction of 1.0%, and then the oxidized starch aqueous solution is gelatinized in a constant temperature water bath at 88° C. to obtain a transparent oxidized starch solution;
[0021] Step 2: Preparation of sizing agent solution
[0022] Dilute the anion-dispersed rosin gum emulsion with water to a mass fraction of 0.8%, add the diluted anion-dispersed rosin gum emulsion into the oxidized starch solution, and mix uniformly to obtain a sizing agent solution. In the sizing agent solution, the oxidized starch solution and the diluted The anionic dispersed rosin gum emulsion is formulated at a mass ratio of 1:1;
[0023] Step 3: Preparation of ethyl cellulose solution
[0024] Ethyl cellulose (technical grade) is added in the ethanol aqueous solution of 30% by mass fraction, stirs until fully wetting and dissolving to obtain ethyl ...
Embodiment 2
[0030] Step 1: Preparation of oxidized starch solution
[0031] Prepare the oxidized starch into an aqueous oxidized starch solution with a mass fraction of 1.0%, and then gelatinize the aqueous oxidized starch solution in a constant temperature water bath at 92°C to obtain a transparent oxidized starch solution;
[0032] Step 2: Preparation of sizing agent solution
[0033] Dilute the anion-dispersed rosin gum emulsion with water to a mass fraction of 0.8%, add the diluted anion-dispersed rosin gum emulsion into the oxidized starch solution, and mix uniformly to obtain a sizing agent solution. In the sizing agent solution, the oxidized starch solution and the diluted The anionic dispersed rosin gum emulsion is formulated at a mass ratio of 1:1;
[0034] Step 3: Preparation of ethyl cellulose solution
[0035] Ethyl cellulose (technical grade) is added in the ethanol aqueous solution of 30% by mass fraction, stirs until fully wetting and dissolving to obtain ethyl cellulose ...
Embodiment 3
[0041] Step 1: Preparation of oxidized starch solution
[0042] Prepare the oxidized starch into an aqueous oxidized starch solution with a mass fraction of 1.0%, and then gelatinize the aqueous oxidized starch solution in a constant temperature water bath at 89°C to obtain a transparent oxidized starch solution;
[0043] Step 2: Preparation of sizing agent solution
[0044] Dilute the anion-dispersed rosin gum emulsion with water to a mass fraction of 0.8%, add the diluted anion-dispersed rosin gum emulsion into the oxidized starch solution, and mix uniformly to obtain a sizing agent solution. In the sizing agent solution, the oxidized starch solution and the diluted The anionic dispersed rosin gum emulsion is formulated at a mass ratio of 1:1;
[0045] Step 3: Preparation of ethyl cellulose solution
[0046] Ethyl cellulose (technical grade) is added in the ethanol aqueous solution of 30% by mass fraction, stirs until fully wetting and dissolving to obtain ethyl cellulose ...
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