发明名称 |
TUBE HAVING REGIONS OF DIFFERENT SURFACE CHEMISTRY AND METHOD THEREFOR |
摘要 |
In a method to modify the chemistry of a portion of the surface of an article, the surface is placed adjacent an electrode in a plasma chamber, the distance to the wall of the chamber being at least five times the size of the electrode. A plasma of very high power density is generated in a discharge volume surrounding the electrode so that the surface area closest to the electrode receives a very intense plasma which, diminishes with increasing distance from the discharge volume thus forming a chemical gradient on the article surface. The preferred article is a tube having one closed end, and the gradient may be formed from either the closed end or the open end. The gradient may be of decreasing glass-like character or decreasing plastic-like character.
|
申请公布号 |
CA2107037(C) |
申请公布日期 |
1999.09.21 |
申请号 |
CA19932107037 |
申请日期 |
1993.09.27 |
申请人 |
|
发明人 |
MONTGOMERY, DAVID B.;VOGLER, ERWIN A. |
分类号 |
A61B5/15;B01J19/08;B01L3/14;B05D7/24;B29C59/14;C03C23/00;C08J7/00;(IPC1-7):B01J19/08;A61L33/00 |
主分类号 |
A61B5/15 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|