发明名称 |
Method for extrusion coating multiple webs |
摘要 |
The specification discloses a method for extrusion coating multiple substrate webs on a dual or tandem extruder system having multiple extruder stations. The method includes as an initial step providing a first substrate web and a second substrate web wherein each of the first and second substrate webs has a coating side and an underside. The webs are temporarily joined to form a composite web wherein the respective coating sides face outward and the respective undersides face one another. A first polymer coating is extruded on the coating side of the first web at a first extrusion station. Subsequently, a second polymer coating is extruded on the coating side of the second web at a second extrusion station. The extrusion coated first and second webs are then separated. The invention enables more efficient and economical use of dual or tandem extruder systems.
|
申请公布号 |
US6656401(B1) |
申请公布日期 |
2003.12.02 |
申请号 |
US20010978392 |
申请日期 |
2001.10.16 |
申请人 |
INTERNATIONAL PAPER COMPANY |
发明人 |
KNAUF GARY H. |
分类号 |
B05D1/26;B29C47/14;B29C47/88;B32B27/10;B32B37/20;B32B37/24;B32B43/00;D21H23/46;(IPC1-7):B29C47/00 |
主分类号 |
B05D1/26 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|