Invention Grant
- Patent Title: Process for making a spunmelt nonwoven batt or web from recycled polypropylene
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Application No.: US17344365Application Date: 2021-06-10
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Publication No.: US11946169B2Publication Date: 2024-04-02
- Inventor: Karthik Ramaratnam , John C. Parsons , David John Pung , Anna Elizabeth Macura , Eric Bryan Bond
- Applicant: PFNONWOVENS LLC
- Applicant Address: US PA Hazleton
- Assignee: PFNONWOVENS LLC
- Current Assignee: PFNONWOVENS LLC
- Current Assignee Address: US PA Hazleton
- Agency: Amster, Rothstein & Ebenstein LLP
- Main IPC: B01D37/00
- IPC: B01D37/00 ; D01D1/10 ; D01D5/08 ; D01D5/088 ; D01D7/00 ; D01F6/06 ; D01F8/06 ; D04H3/007 ; D04H3/16 ; B29K23/00 ; B29K105/26 ; B32B37/00

Abstract:
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.
Public/Granted literature
- US20210388535A1 SPUNBOND RECYCLED POLYPROPYLENE NONWOVEN AND METHOD OF MAKING THE SAME Public/Granted day:2021-12-16
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