Invention Grant
- Patent Title: System and method for controlling curl in multi-layer webs
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Application No.: US14135993Application Date: 2013-12-20
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Publication No.: US10384231B2Publication Date: 2019-08-20
- Inventor: Ronald P. Swanson , Andrew J. Henderson , James N. Dobbs , Mark J. Zach
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- Applicant Address: US MN St. Paul
- Assignee: 3M INNOVATIVE PROPERTIES COMPANY
- Current Assignee: 3M INNOVATIVE PROPERTIES COMPANY
- Current Assignee Address: US MN St. Paul
- Agent Yufeng Dong; Adrian L. Pishko
- Main IPC: B05D3/12
- IPC: B05D3/12 ; B05D7/04 ; B65H23/022 ; B65H23/025 ; B65H23/34 ; B65H26/00 ; C08J7/04 ; B29C55/02

Abstract:
A system and method for controlling curl in multi-layer webs. The method can include providing a coated web, curing the coating to form a multi-layer web, and stretching the web during curing of the coating. Some coatings shrink at least partially when cured such that curing the coating induces a strain in the multi-layer web. Stretching the web occurs during curing to induce an opposing strain that at least partially counteracts the strain induced by curing to form a multi-layer web having a desired curvature. The system can include a curing section configured to cure the coating, and can further include a web stretching section, which can be located proximate the curing section and can be substantially coincident with the curing section, such that the web is stretched while the coating is cured.
Public/Granted literature
- US20140109826A1 SYSTEM AND METHOD FOR CONTROLLING CURL IN MULTI-LAYER WEBS Public/Granted day:2014-04-24
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