公开(公告)号：US12209338B2

公开(公告)日：2025-01-28

申请号：US18570620

申请日：2023-04-17

Applicant: DONGYING JOFO FILTRATION TECHNOLOGY CO., LTD.

Inventor： Wensheng Huang ,  Yujia Liu ,  Guodong Xie ,  Weidong Zhang ,  Jinjing Qiu ,  Weifeng Sun ,  Zhiguo Huang

IPC: B29C48/21 ,  B29C48/00 ,  B32B37/00 ,  D01D1/04 ,  D01D1/10 ,  D01D5/08 ,  D01D5/098 ,  D01D5/12 ,  D01D7/00 ,  D01F1/10 ,  D01F6/06 ,  D02J1/22 ,  D02J13/00 ,  D04H1/4291 ,  D04H1/435 ,  D04H1/4374 ,  D04H1/4382 ,  D04H1/56 ,  D04H1/587 ,  D04H1/593 ,  D04H3/007 ,  D04H3/16 ,  D04H5/06 ,  D06M11/72 ,  D06M13/262 ,  D06M15/11 ,  D06M15/356 ,  E04D5/12 ,  D06M101/20 ,  D06M101/32

Abstract: The present application discloses a preparation method of SM non-woven fabrics for roof anti-slip, which belongs to the technical field of roofing materials, comprising preparing spunbond non-woven fabric raw materials, preparing spunbond non-woven fabrics, preparing meltblown non-woven fabric raw materials, preparing primary SM non-woven fabrics, and post-processing; the spunbond non-woven fabric raw materials are prepared by uniformly mixing polypropylene with a low melt flow index, polypropylene with a high melt flow index, sodium alginate, antioxidant 1010, zinc stearate, ultraviolet absorber UV-531, polyvinyl alcohol, reinforcing agent, adhesive agent, and nano titanium dioxide. The present application can avoid the problem that the SM non-woven fabrics cannot be fully bonded together and are easy to delaminate when being combined, can also solve the problem of fabric breakage during high-speed production, and can also improve the wear resistance, strength, and stiffness of SM non-woven fabrics. The prepared SM non-woven fabrics have low production costs, are easy to recycle, and have good environmental performances.