A kind of preparation method of pad paper for stainless steel
A technology of stainless steel and pad paper, which is applied in papermaking, paper, paper coating, etc., can solve the problems of insufficient surface strength of pad paper, affect the production efficiency of steel mills, and affect the surface quality of steel plates, etc., so as to reduce the probability of white marks The effect of reducing the occurrence probability of white marks and improving the evenness
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Embodiment 1
[0042] Embodiment 1: a kind of preparation method of pad paper for stainless steel comprises the following steps:
[0043] S1: Paper forming: Pulp blending, beating recycled pad paper, coniferous wood pulp and hardwood pulp separately and mixing in the pulping tank. Various raw materials in the pulp contain 15% recycled pad paper and 60% coniferous wood pulp and 25% hardwood pulp; the pulp is sent to the slag remover for slag removal, and then enters the wire section of the paper machine through the headbox to drain, and then presses most of the water out through the press section, so that the paper dryness reaches 34-42 %;
[0044] S2: Drying before sizing: continue to remove moisture through the drying cylinder to obtain the base paper;
[0045] S3: Surface sizing: apply the sizing agent to the two outer surfaces of the base paper through a film transfer sizing machine;
[0046] S4: Drying after sizing: remove the sizing agent and the moisture on the base paper through the...
Embodiment 2
[0053] Example 2: A method for preparing a pad paper for stainless steel. The difference from Example 1 is that the process parameters and sizing agent formulation in step S5 are different. In step S5, the calender roll temperature is 120° C., and the linear pressure is 100 kN / m. The components and corresponding dosages of the sizing agent in Example 2 are shown in Table 1.
Embodiment 3
[0054] Example 3: A method for preparing a pad paper for stainless steel. The difference from Example 1 lies in that the process parameters and sizing agent formulation in step S5 are different. In step S5, the calender roll temperature is 125° C., and the linear pressure is 105 kN / m. The components and corresponding dosages of the sizing agent in Example 3 are shown in Table 1.
[0055] Table 1 Embodiment 1-3 components and corresponding quality (kg)
[0056]
[0057] In Examples 1-3, the epiglutinous starch is composed of oxidized starch and α-amylase, and the enhancer is alkyl ketene dimer emulsion.
[0058] In Example 1, the mass-number ratio of oxidized starch and α-amylase is 100:0.02.
[0059] In Example 2, the mass-number ratio of oxidized starch and α-amylase is 100:0.03.
[0060] In Example 3, the mass-number ratio of oxidized starch and α-amylase is 100:0.26.
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