| 摘要 |
PROBLEM TO BE SOLVED: To develop a flexible open cell foam useful for a liquid absorbing sanitary product, which can be manufactured by a simple process. SOLUTION: The fine pore flexible foam having an open cell is based on an olefin polymer or a thermoplastic polyester. The foam has an open cell content of 40%, preferably higher than 50%, a density of 300 g/L (liter), preferably in the range of 20-200 g/L, and an average cell diameter of less than 0.1 mm, preferably less than 0.08 mm.
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