Multi-purpose environment-friendly degerming type multi-layer filtering non-woven fabric and preparation method thereof

• Main Authors: TAN ZHENGJIE, YIN CHENGYAN, SHI ZHONGKUN
• Format: Patent
• Language: Chinese; English
• Published: 12.11.2021
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; BRAIDING; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; COTTON-WOOL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; KNITTING; LACE-MAKING; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; NON-WOVEN FABRICS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; SPINNING; TEXTILES; TRANSPORTING; TRIMMINGS; WADDING

The invention discloses a multi-purpose environment-friendly degerming type multi-layer filtering non-woven fabric. The multi-purpose environment-friendly degerming type multi-layer filtering non-woven fabric comprises an inner-layer non-woven fabric and an outer-layer non-woven fabric arranged on the outer side of the inner-layer non-woven fabric, the inner-layer non-woven fabric is made of high-density polyethylene PE-HD, low-fat polypropylene, monochlorodifluoromethane R22, tetrafluorodichloroethane R114 and a composite flame retardant, the outer layer non-woven fabric is prepared from the following materials: polyethylene glycol terephthalate PET, polybutylene terephthalate PBT, trifluoroacetic acid TFA, dichloromethane DCM, an antistatic agent and an emulsifier. The invention also provides a preparation method of the non-woven fabric. The preparation method comprises the following steps of S1, preparing the inner-layer non-woven fabric; S2, preparing the outer-layer non-woven fabric; and S3, compounding