Process for making a hydrophilic coating on a formed part and safety razor made using this process
US5005287A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 5, 1988 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | May 5, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D2202/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Process for forming and applying a hydrophilic coating, which is highly slideable when wet, to a plastic or metal part either directly, or indirectly via plastic film, to a safety razor or razor blade unit, in which a solution containing a water-soluble polymer is applied to the plastic or metal part and is cured. The invention also relates to a razor blade unit comprising a blade platform for at least one razor blade, a surface for slidably engaging the skin of a user and a coating on the surface for increasing the slideability of the surface. The coating comprises a water-soluble polymer or copolymer of poly-N-vinylpyrrolidone, at least one radically polymerizable vinyl monomer and a photoinitiator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.