| 摘要 |
PURPOSE:To obtain a flexible and perforated plastic sheet being suitable for a liq.-permeable surface sheet for a humor treating product having little sticky touch to the skin and surface luster. CONSTITUTION:A flexible and perforated plastic sheet 1 has ribs 2 and 3 in the first and second directions crossing each other and adjoining two lines of the ribs 2 in the first direction and adjoining two lines of the ribs 3 in the second direction cross each other to form a liq.-permeable opening 4. In these crossings, at the first crossing part 5, the ribs 2 in the first direction rise and at the second crossing part 6, the ribs 3 in the second direction rise. The first crossing parts 5 are placed along each of the ribs 2 and 3 in the first and second directions and periodically placed so as to be continued two or more. A plastic sheet 1 with a complicated unevenness on the surface and little sticky touch to the skin and surface luster can be obtd. by these ribs 2 and 3. This plastic sheet 1 can be obtd. by thermoforming 1 a flexible thermoplastic plastic sheet on a twill-woven net. |
