Method for forming a textured surface on a geomembrane
US5728424A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 10, 1996 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Apr 10, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C70/64
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A system for forming a textured surface on a geomembrane including a support surface, a first set of rollers for passing the geomembrane onto the support surface such that a surface of the geomembrane faces upwardly, a heater positioned in proximity to the surface of the geomembrane so as to heat the geomembrane to a desired elevated temperature, a particle distributer positioned above the geomembrane so as to pass solid particles onto the surface of the geomembrane in a desired particle distribution. The particles can have a desired size and geometry as they are passed onto the surface of the geomembrane. A second set of rollers is positioned adjacent to the port surface so as to receive the geomembrane after the particles have been distributed thereon. The heater includes a preheater positioned on one side of the particle distributor and a postheater positioned on an opposite side of the particle distributor. The preheater serves to elevate a temperature of the surface of the geomembrane prior to receiving particles thereon. The postheater serves to bond the distributed particles onto the surface of the geomembrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.