发明名称 |
Method and apparatus for drying web |
摘要 |
The present invention is directed to a method and apparatus for drying a web of paper utilizing impulse drying techniques. In the method of the invention for drying a paper web, the paper web is transported through a pair of rolls wherein at least one of the rolls has been heated to an elevated temperature. The heated roll is provided with a surface having a low K value of less than about 3000 w 2ROOT s/m2c and having a low porosity. The surface material of the roll is preferably prepared from a material selected from the group consisting of ceramics, polymers, glass, inorganic plastics, composite materials and cermets. The heated roll may be constructed entirely from the material having a low K value or the roll may be formed from metal, such as steel or aluminum, or other suitable material which is provided with a surface layer of a material having a low K value.
|
申请公布号 |
US5272821(A) |
申请公布日期 |
1993.12.28 |
申请号 |
US19910643524 |
申请日期 |
1991.01.18 |
申请人 |
INSTITUTE OF PAPER SCIENCE AND TECHNOLOGY, INC. |
发明人 |
ORLOFF, DAVID I.;LENLING, WILLIAM J. |
分类号 |
D21F3/02;D21F5/04;F26B13/14;(IPC1-7):F26B13/28 |
主分类号 |
D21F3/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|