| 摘要 |
PROBLEM TO BE SOLVED: To provide extraction sheet paper formed of polyolefine fiber excellent in heat seal peel strength at the time of being used in hot water such as a tea bag and a coffee filter and excellent in paper texture from the viewpoint of excellent paper making. SOLUTION: Wet paper is formed by mixing 95-30 wt.% of hydrophilic fiber and 5-70 wt.% of fiber formed by sticking a polyether amide compound to sheath-core compound fiber with propylene as a core component and with denatured polypropylene obtained by copolymerizing ethylene at 1-8 wt.% and having a fusing point of 135 deg.C or higher, as a sheath component. The average pore size of this wet paper is 10-50μm, heat seal dry peel strength is 100 g/cm or more, and heat seal peel strength in a boiling state is 50 g/cm or more.
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