US 12,110,613 B2
Method for recycling nonwoven fabric
Dong Soo Shin, Gwangmyeong-si (KR)
Appl. No. 17/293,913
Filed by Dong Soo Shin, Gwangmyeong-si (KR)
PCT Filed Jan. 8, 2020, PCT No. PCT/KR2020/000315
§ 371(c)(1), (2) Date May 14, 2021,
PCT Pub. No. WO2020/149562, PCT Pub. Date Jul. 23, 2020.
Claims priority of application No. 10-2019-0005907 (KR), filed on Jan. 16, 2019.
Prior Publication US 2022/0010464 A1, Jan. 13, 2022
Int. Cl. D01G 13/00 (2006.01); D01G 7/06 (2006.01); D01G 11/00 (2006.01); D04H 1/4274 (2012.01); D04H 1/44 (2006.01)
CPC D01G 11/00 (2013.01) [D01G 7/06 (2013.01); D01G 13/00 (2013.01); D04H 1/4274 (2013.01); D04H 1/44 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for recycling a nonwoven fabric, the method comprising:
a waste nonwoven fabric pulverization operation of pulverizing a waste nonwoven fabric to obtain pulverized waste nonwoven fabric particles;
a material mixing operation of dispersing and mixing the pulverized nonwoven fabric particles and a filler in water to obtain a nonwoven fabric mixture;
a raw material mixing operation of adding a fixing agent for agglomeration of the pulverized waste nonwoven fabric particles and the filler to the nonwoven fabric mixture, followed by mixing, to form a raw material;
a raw material feeding operation of spraying the raw material into an upper space by using a raw material discharging nozzle and supplying the raw material;
a raw material settling operation of settling the raw material filled in the upper space into an intermediate space, which is located below the upper space and in which a filter net for passing water downward is installed on a bottom;
a draining operation of draining water from a lower space located below the intermediate space to form a nonwoven fabric recycling sheet on the filter net; and
a first lamination operation of laminating a plurality of nonwoven fabric recycling sheets to form a laminate.