Micro-perforated polyethylene encasement
US6773774B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2002 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Aug 7, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24314
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An improved anti-corrosive material used to protect buried and submerged metallic structure such as conduits from corrosion. The anti-corrosive material is comprised of a layer of polyolefin having a plurality of microperforations formed therein. The anti-corrosive material is preferably comprised of a low density polyethylene having characteristically strong tensile strength and elongation properties to provide conventional protection from soil, water, air, or other potentially damaging elements. The microperforations allow the anti-corrosive material to be utilizeded with cathodic protection systems to provide for a significant reduction in the amount of electrical current required to achieve cathodic protection. The present invention can be used to control corrosion without costly and easily damaged coatings or adhesives; and can be applied to metallic structures in the field prior to installation. The anti-corrosive material of the present invention may further comprise one or more antimicrobial additives incorporated therein to provide protection against microbiologically influenced corrosion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.