Invention Grant
- Patent Title: Methods of laundering stitchbonded nonwoven towels using a soil release polymer
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Application No.: US17085054Application Date: 2020-10-30
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Publication No.: US11884899B2Publication Date: 2024-01-30
- Inventor: Robert Charles Busch , Maxwell James Lee
- Applicant: AMTEX INNOVATIONS LLC
- Applicant Address: US OH West Chester
- Assignee: AMTEX INNOVATIONS LLC
- Current Assignee: AMTEX INNOVATIONS LLC
- Current Assignee Address: US OH West Chester
- Agency: Nesbitt IP LLC
- Agent Daniel F. Nesbitt
- Main IPC: C11D11/00
- IPC: C11D11/00 ; C11D3/00 ; C11D3/395 ; C11D17/00 ; C11D1/00 ; D06F35/00

Abstract:
A method of laundering a soiled stitchbonded nonwoven towel, to provide hygienically-clean, odor-free towels having non-durable soil release polymer agents on the fabrics and stitching is described. The method has a step of washing soiled stitchbonded nonwoven towels in a first aqueous wash solution formed from a first wash composition comprising a surfactant, a builder, an alkalinity source, and a soil release polymer, at a first alkaline pH, and at a first wash temperature sufficient to remove soil on the towels without redeposition of the soil back onto the towels or into the laundry machine once the residual wash solution is drained. The method also has a step of treating the washed towels in a treatment solution formed from a post-wash composition comprising a soil release polymer agent, at a temperature and pH sufficient to aid in exhausting soil release polymer from the treatment solution and onto the towels or fabrics.
Public/Granted literature
- US20210054312A1 METHODS OF LAUNDERING STITCHBONDED NONWOVEN TOWELS USING A SOIL RELEASE POLYMER Public/Granted day:2021-02-25
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