公开(公告)号：US11946169B2

公开(公告)日：2024-04-02

申请号：US17344365

申请日：2021-06-10

申请人： PFNONWOVENS LLC

发明人： Karthik Ramaratnam ,  John C. Parsons ,  David John Pung ,  Anna Elizabeth Macura ,  Eric Bryan Bond

IPC分类号： B01D37/00 ,  D01D1/10 ,  D01D5/08 ,  D01D5/088 ,  D01D7/00 ,  D01F6/06 ,  D01F8/06 ,  D04H3/007 ,  D04H3/16 ,  B29K23/00 ,  B29K105/26 ,  B32B37/00

CPC分类号： D01F8/06 ,  D01D1/106 ,  D01D5/08 ,  D01F6/06 ,  D04H3/16 ,  B29K2023/12 ,  B29K2105/26 ,  B32B37/0084 ,  B32B2262/0253 ,  B32B2305/20 ,  B32B2305/70 ,  D10B2321/022

摘要： A process for making a spunmelt nonwoven web including the steps of providing a mixture of recycled polypropylene, extruding the recycled polypropylene mixture to form a molten recycled polypropylene mixture, filtering the molten recycled polypropylene mixture through a filter to form recycled polypropylene filtrate, dosing the recycled polypropylene filtrate into the spunmelt production line by an amount of 80% to 100% by weight, passing the recycled polypropylene filtrate through at least one spinneret of the spunmelt production line to form filaments at a spinning speed of greater than 1200 meters per minute, cooling and drawing the filaments, and depositing the filaments on a moving belt to form at least one layer of the spunmelt nonwoven web made up of 80% by 100% by weight of recycled polypropylene fibers.

公开(公告)号：US20210388535A1

公开(公告)日：2021-12-16

申请号：US17344365

申请日：2021-06-10

申请人： PFNONWOVENS LLC

发明人： Karthik Ramaratnam ,  John C. Parsons ,  David John Pung ,  Anna Elizabeth Macura ,  Eric Bryan Bond

IPC分类号： D01F8/06 ,  D04H3/16

摘要： A process for making a spunmelt nonwoven web including the steps of providing a mixture of recycled polypropylene, extruding the recycled polypropylene mixture to form a molten recycled polypropylene mixture, filtering the molten recycled polypropylene mixture through a filter to form recycled polypropylene filtrate, dosing the recycled polypropylene filtrate into the spunmelt production line by an amount of 80% to 100% by weight, passing the recycled polypropylene filtrate through at least one spinneret of the spunmelt production line to form filaments at a spinning speed of greater than 1200 meters per minute, cooling and drawing the filaments, and depositing the filaments on a moving belt to form at least one layer of the spunmelt nonwoven web made up of 80% by 100% by weight of recycled polypropylene fibers.