Preparation method of natural color honeysuckle fiber water-absorbing backing paper
A grass fiber and natural color technology, which is applied in the fields of cellulose raw material pulping, cellulose pulp post-treatment, pulp beating/refining methods, etc., can solve the problems of high fine fiber content, physical strength, water absorption bulk, softness and Adverse effects of air permeability, decreased pulping yield and other issues, to achieve high antibacterial, anti-bacterial and anti-allergic properties, reduce the chance of irritation and allergies, and prevent or inflammatory effects
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Embodiment 1
[0038] (1) Pre-pressing: the honeysuckle stalks from which the tips, roots and leaves have been removed are sent to a press for pressing, the pre-pressing pressure is 8 MPa, the pressing time is 10 minutes, and the temperature is normal temperature.
[0039] (2) Screening and dedusting section: Send the honeysuckle grass flakes that have been air-dried for 2 months into a vibrating roller dust collector to separate heavy and light flakes from qualified flakes. The air-dried flakes stay in the vibrating roller dust collector for 20 minutes.
[0040] (3) Pre-impregnation section: the pre-impregnation process is carried out by sending the screened and dedusted tablets into the digester. The residence time of the tablet in the pre-impregnation section is 90min, the temperature is 80°C, the amount of sodium hydroxide is 5% relative to the mass of the absolute dry raw material, and the liquid ratio is 1:5.
[0041] (4) Alkaline cooking: After pre-impregnation, add alkaline substanc...
Embodiment 2
[0052] (1) Pre-pressing: the honeysuckle stalks from which the tips, roots and leaves have been removed are sent to an extruder for pressing, the pre-pressing pressure is 20 MPa, the pressing time is 2 minutes, and the temperature is normal temperature.
[0053] (2) Screening and dedusting section: the honeysuckle grass flakes that have been air-dried for 12 months are sent to the vibrating roller dust collector to separate heavy and light flakes from qualified flakes. The residence time of the air-dried tablet in the vibrating roller dust collector is 10 minutes.
[0054] (3) Pre-impregnation section: the pre-impregnation process is carried out by sending the screened and dedusted tablets into the digester. The residence time of the tablet in the pre-impregnation section is 10min, the temperature is 95°C, the amount of sodium hydroxide is 10% relative to the absolute dry raw material mass, and the liquid ratio is 1:2.
[0055] (4) Alkaline cooking: After pre-impregnation, ad...
Embodiment 3
[0063] (1) Pre-pressing: the honeysuckle stalks from which the tips, roots and leaves have been removed are sent to an extruder for pressing. The pre-pressing pressure is 16 MPa, the pressing time is 6 minutes, and the temperature is normal temperature.
[0064] (2) Screening and dedusting section: Send the honeysuckle flakes that have been air-dried for 6 months into a vibrating roller dust collector to separate heavy and light flakes from qualified flakes. The air-dried flakes stay in the vibrating roller dust collector for 40 minutes.
[0065] (3) Pre-impregnation section: the pre-impregnation process is carried out by sending the screened and dedusted tablets into the digester. The residence time of the tablet in the pre-impregnation section is 120min, the temperature is 20°C, the amount of sodium hydroxide is 1%, and the liquid ratio is 1:6 relative to the mass of the dry raw material.
[0066] (4) Alkaline cooking: After the pre-impregnation, add alkaline substances for...
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