| 摘要 |
PROBLEM TO BE SOLVED: To provide the subject sheet which is formed from hydroentangled fibers, has an increased strength and a tendency for decreasing the dropping of fibers, and is useful for ultrafiltration filters, face masks, battery separators, coolant filtration media, diaper linings, and so on. SOLUTION: This fluoropolymer sheet or web is produced by forming a fluoropolymer sheet or web and then immediately subjecting the sheet or web to an interlacing treatment using water, thereby rearranging fibers in the sheet or web by the force of the liquid, uniformly dispersing the fibers and reinforcing the mutual bonding of the fibers. The fiber sheet or web is formed by a variety of methods, including but not limited to, melt blowing, dry laying or air laying, melt spinning or spin bonding, wet laying, and carding. |
