Waterproof moisture-absorbing packaging paperboard
A technology for packaging cardboard and cardboard, applied in packaging paper, wrapping paper, packaging, etc., can solve the problems of hindering the outflow and evaporation of internal sewage, damage to internal products, limited waterproof effect, etc., to relieve environmental pressure, improve waterproof performance, The effect of improving the waterproof and moisture absorption performance
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[0024] Example 1
[0025] (1) The straw is divided into three batches for impurity removal and cleaning, and then cut into sections and crushed to obtain straw powder. Two parts of straw powder are placed in a pulper to be crushed and pulped to obtain a straw slurry; the obtained straw slurry is heated to 150 ℃, take a portion of straw pulp and send it to the corrugated paper double-sided machine to make corrugated paper;
[0026] (2) Take another portion of straw pulp, dry it and immerse it in a 0.005wt% paraffin wax solution with ethanol as a solvent for 60-80 minutes at 60-70°C to obtain the outer cardboard pulp; dry the outer cardboard pulp in a paper machine Forming, get outside cardboard base paper.
[0027] (3) Coat the hydrophobic agent uniformly on one side of the base paper of the outer cardboard, and then repeat the coating several times after drying until the thickness of the hydrophobic agent on the surface is 0.4 mm to obtain the outer cardboard.
[0028] (4) Take part ...
Example Embodiment
[0031] Example 2
[0032] (1) The straw is divided into three batches for impurity removal and cleaning, and then cut into sections and crushed to obtain straw powder. Two parts of straw powder are placed in a pulper to be crushed and pulped to obtain a straw slurry; the obtained straw slurry is heated to 150 ℃, take a portion of straw pulp and send it to the corrugated paper double-sided machine to make corrugated paper;
[0033] (2) Take another portion of straw pulp, dry it and immerse it in a 0.005wt% paraffin wax solution with ethanol as a solvent for 60-80 minutes at 60-70°C to obtain the outer cardboard pulp; dry the outer cardboard pulp in a paper machine Forming, get outside cardboard base paper.
[0034] (3) Coat the hydrophobic agent uniformly on one side of the base paper of the outer cardboard, and then repeat the coating several times after drying until the thickness of the hydrophobic agent on the surface is 0.2 mm to obtain the outer cardboard.
[0035] (4) Take part ...
Example Embodiment
[0038] Example 3
[0039] (1) The straw is divided into three batches for impurity removal and cleaning, and then cut into sections and crushed to obtain straw powder. Two parts of straw powder are placed in a pulper to be crushed and pulped to obtain a straw slurry; the obtained straw slurry is heated to 150 ℃, take a portion of straw pulp and send it to the corrugated paper double-sided machine to make corrugated paper;
[0040] (2) Take another portion of straw pulp, dry it and immerse it in a 0.005wt% paraffin wax solution with ethanol as a solvent for 60-80 minutes at 60-70°C to obtain the outer cardboard pulp; dry the outer cardboard pulp in a paper machine Forming, get outside cardboard base paper.
[0041] (3) The hydrophobic agent is evenly coated on one side of the base paper of the outer cardboard, and the coating is repeated several times after drying, until the thickness of the hydrophobic agent on the surface is 0.5 mm after drying to obtain the outer cardboard.
[0042...
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