发明名称 |
Vacuum assisted application of thin vapor permeable, liquid impermeable coatings on apertured substrates and articles produced therefrom |
摘要 |
A process for the manufacture of a vapor permeable, liquid impermeable composite material comprising a three-dimensional apertured substrate having a vapor permeable, liquid impermeable coating material thereon, the substantially liquid impervious composite material, and an apparatus for making the composite material are disclosed. Successive portions of a continuous sheet of an apertured substrate are passed into contact with a continuous moving perforated member. The coating material is supplied onto the substrate. The coated substrate is subjected to a vacuum which causes the coating material to flow onto the substrate material and in certain embodiments, at least partially into the apertures in the substrate. The vacuum is maintained for a period of time sufficient for the coating material to adhere to the substrate. The coated portions of the substrate are continuously removed from the moving member.
|
申请公布号 |
US5762643(A) |
申请公布日期 |
1998.06.09 |
申请号 |
US19940333978 |
申请日期 |
1994.11.03 |
申请人 |
TREDEGAR INDUSTRIES, INC. |
发明人 |
RAY, CARL D.;THOMAS, PAUL E.;MCBRIDE, ROBERT K.;CHANG, PETER I. |
分类号 |
A61F13/514;A61F13/00;A61F13/15;B29C63/02;B32B3/24;B32B5/18;B32B27/32;(IPC1-7):A61F13/15;B32B3/10 |
主分类号 |
A61F13/514 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|