Invention Grant
- Patent Title: Perforated binder for laminated wound dressing
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Application No.: US16261332Application Date: 2019-01-29
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Publication No.: US11241339B2Publication Date: 2022-02-08
- Inventor: David Dewitt , Jonathan Veal
- Applicant: ConvaTec Inc.
- Applicant Address: US NV Las Vegas
- Assignee: ConvaTec Inc.
- Current Assignee: ConvaTec Inc.
- Current Assignee Address: US NV Las Vegas
- Agency: Taft Stettinius & Hollister LLP
- Agent Ryan O. White; Derek B. Lavender
- Main IPC: A61F13/00
- IPC: A61F13/00 ; A61F13/02

Abstract:
A binder layer for a laminated wound dressing is brought into contact with a sheet coated with a pattern-coated adhesive sheet. As the binder layer is in contact with the pattern-coated adhesive sheet, a series of closed-loop cuts are made in the binder layer. The closed-loop cuts are made in such a way that the material enclosed by each closed loop is substantially physically separated from the remainder of the binder layer. Then the binder layer is moved away from the pattern-coated adhesive sheet, so that the binder layer and the pattern-coated adhesive sheet are no longer in contact. When the binder layer and the pattern-coated adhesive sheet are moved apart, the material enclosed in the closed-loop cuts—i.e., the cut waste fragments—are retained on the pattern-coated adhesive sheet, ensuring that the binder layer includes a series of cleared perforations.
Public/Granted literature
- US20190151158A1 PERFORATED BINDER FOR LAMINATED WOUND DRESSING Public/Granted day:2019-05-23
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