Invention Grant
- Patent Title: Plastic casting molds
- Patent Title (中): 塑胶模具
-
Application No.: US09645900Application Date: 2000-08-25
-
Publication No.: US06638451B1Publication Date: 2003-10-28
- Inventor: Peter Hagmann , Axel Heinrich , Willi Hoerner , Robert Allen Janssen , John Martin Lally , Robert Earl Szokolay , Bernhard Seiferling
- Applicant: Peter Hagmann , Axel Heinrich , Willi Hoerner , Robert Allen Janssen , John Martin Lally , Robert Earl Szokolay , Bernhard Seiferling
- Main IPC: C08R246
- IPC: C08R246
Abstract:
The invention is concerned with the problem that with known plastic casting molds, especially those of polypropylene, the lenses produced with these molds have a slippery surface. The invention solves this problem through the use of polymers which are notable for their very low oxygen permeability.
Information query
