Invention Grant
- Patent Title: System and method for controlling curl in multi-layer webs
- Patent Title (中): 用于控制多层腹板卷曲的系统和方法
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Application No.: US11861769Application Date: 2007-09-26
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Publication No.: US08647556B2Publication Date: 2014-02-11
- Inventor: Ronald P. Swanson , Andrew J. Henderson
- Applicant: Ronald P. Swanson , Andrew J. Henderson
- 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 Scott A. Baum; Adrian L. Pishko
- Main IPC: B29C59/16
- IPC: B29C59/16 ; B29C55/00 ; B29C55/12 ; B29C35/08 ; B29C35/10

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
- US20080081164A1 SYSTEM AND METHOD FOR CONTROLLING CURL IN MULTI-LAYER WEBS Public/Granted day:2008-04-03
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