Method of making a plastic lined concrete structure
US5203810A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 11, 1992 |
| Grant date | Apr 20, 1993 |
| Priority date | — |
| Expiry date | Aug 11, 2012 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04H13/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of making a concrete structure, such as a burial vault, having an integrally bonded thermoplastic resin liner. The liner is a rigid molded product having a bottom wall and side walls and an open top. A thermosetting resin adhesive is applied to the outer surface of the liner and consists of an epoxy resin system, a solvent for the thermoplastic liner, and a surfactant. Before the adhesive is fully cured, wet flowable concrete is applied to the adhesive layer. The solvent acts to solubilize the outer surface of the plastic liner, while the surfactant reduces the hydrophobic characteristics of the adhesive to provide a firmly bonded composite structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.