Perforated binder for laminated wound dressing
US10219953B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2012 |
| Grant date | Mar 5, 2019 |
| Priority date | — |
| Expiry date | Apr 17, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/00936
- WIPO fieldMedical technology
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.