| 摘要 |
PCT No. PCT/EP83/00292 Sec. 371 Date Jul. 9, 1984 Sec. 102(e) Date Jul. 9, 1984 PCT Filed Nov. 5, 1983 PCT Pub. No. WO84/01970 PCT Pub. Date May 24, 1984.Use of an application of foam to air permeable sheet material by a variety of mechanical or pressure applied means in order to cause or allow the foam to enter the interstices of the material. The foam contains as an essential integer an agent capable of lowering the surface tension of the foaming liquid thereby effecting a dewatering/drying action on the material greater than that than would otherwise be applied. |
