Method of treating materials to improve their conductance for use in the manufacture of directionally aligned materials
US4664856A · kind A · utility
7Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1984 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Dec 27, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27N3/143
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method is disclosed for treating discrete pieces of material, particularly pieces of lignocellulosic furnish, to ensure adequate conductance thereof for orientation in an electric field for electrostatic alignment. The furnish is exposed to a conductance-improving substance of substances, such as an alkali or alkaline earth metal salts of weak acid, quaternary ammonium salts, or gases such as ammonia, chlorine, sulfur dioxide, etc. prior to being subjected to the electric field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.