Method and apparatus for measuring the cut resistance of flexible materials
US4864852A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1988 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Jul 25, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N3/42
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and apparatus for measuring the cut resistance of flexible materials, such as films, fabrics, felts and papers. A flexible material is wrapped around a mandrel that is rotated at a predetermined speed. A cam attached to the rotating mandrel allows a cutting edge, such as a razor blade, to repeatedly fall on the material covering the mandrel. The cutting edge repeatedly contacts the material, in the same location and with the same predetermined force, until the cutting edge penetrates the material and makes electrical contact with the mandrel. When edge-to-mandrel contact is made, the rotation of the mandrel is automatically stopped. The number of rotations (i.e. cutting cycles) required to penetrate the material is noted and used as a measure of the relative cut resistance of the material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.