A completely biodegradable filter material and its preparation method
A filter material, biodegradable technology, applied in the field of completely biodegradable filter material and its preparation, can solve the problems of low filtration efficiency, poor electret effect, etc., achieve good mechanical usability, excellent wearing comfort, good dwelling very stable effect
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Embodiment 1
[0048] A completely biodegradable filter material and a preparation method thereof, comprising the following steps:
[0049](1) Select bleached kraft softwood pulp, after beating by PFI, prepare pulp with a concentration of 1%, add 20% tourmaline powder relative to the absolute dry mass of the pulp, and add 2% of the absolute dry mass of the pulp with a molecular weight of 8,000,000 Cationic polyacrylamide is used as the resident agent, formed by inclined wire paper machine, and the weight of the paper base is 20g / m 2 .
[0050] (2) Choose quantitative 13g / m 2 The polylactic acid non-woven fabric is firstly subjected to spunlace treatment once, the water pressure is 50bar, and the distance is 5mm. Then, the wet paper web is hydroentangled onto the polylactic acid nonwoven fabric with a water pressure of 30 bar and a distance of 20 mm to obtain a plant fiber hydroentangled polylactic acid nonwoven fabric filter material.
[0051] (3) Carry out skin-friendly treatment by soak...
Embodiment 2
[0054] A completely biodegradable filter material and a preparation method thereof, comprising the following steps:
[0055] (1) Select kraft method softwood pulp, after beating by PFI, prepare pulp with a concentration of 0.5%, add 20% tourmaline powder relative to the absolute dry mass of the pulp, and add cations with a molecular weight of 8 million in 2% of the absolute dry mass of the pulp Polyacrylamide is used as the resident agent, formed by inclined wire paper machine, and the basis weight of the paper base is 20g / m 2 .
[0056] (2) Use quantitative 13g / m 2 The polylactic acid non-woven fabric is firstly subjected to spunlace treatment once, the water pressure is 50bar, and the distance is 5mm. Then, the wet paper web is hydroentangled onto the polylactic acid nonwoven fabric with a water pressure of 50 bar and a distance of 20 mm to obtain a plant fiber hydroentangled polylactic acid nonwoven fabric filter material.
[0057] (3) Carry out skin-friendly treatment b...
Embodiment 3
[0060] A completely biodegradable filter material and a preparation method thereof, comprising the following steps:
[0061] (1) Select kraft method softwood pulp, after beating through PFI, prepare pulp with a concentration of 1.5%, add 20% silicon nitride relative to the absolute dry mass of the pulp, and add 2% of the absolute dry pulp with a molecular weight of 8 million Cationic polyacrylamide is used as the resident agent, formed by inclined wire paper machine, and the weight of the paper base is 20g / m 2 .
[0062] (2) Use quantitative 13g / m 2 The polylactic acid non-woven fabric is firstly subjected to spunlace treatment once, the water pressure is 50bar, and the distance is 5mm. Then the wet paper web is hydroentangled on the polylactic acid spunlaced non-woven fabric, the water pressure is 50 bar, and the distance is 20 mm to obtain the plant fiber spunlace polylactic acid non-woven fabric filter material.
[0063] (3) Carry out skin-friendly treatment by soaking i...
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