| 摘要 |
A tobacco filter stock capable of molding it into a filter only by entanglement of filaments with one another without any adhesion means, which filter has a suitable hardness and a superior whiteness, a tobacco filter and a production process thereof are provided, which tobacco filter stock consists of a tow consisting of crystalline polyolefin filaments, preferably crystalline polypropylene filaments, and having a single filament denier of 1 to 6 d/f, a total denier of 30,000 to 60,000 D 40 to 60 crimps/25mm filament, a crimp elastic modulus of 2.5 to 5.0, a frictional coefficient between filaments of 0.20 to 0.37 and a height ratio (height/width) of 0.01 to 0.1. |
