Tow band for heated tobacco product tip, tip for heated tobacco product, method for manufacturing tow band for heated tobacco product tip, and method for manufacturing heated tobacco product tip

A method for manufacturing a tow band, the method comprising:

• an aligning step of aligning a plurality of filaments in a roll width direction of a pair of nip rolls at a position preceding the pair of nip rolls in a conveyance direction of the plurality of filaments while conveying the plurality of filaments of which a total denier is set to a value in a range of 10000 to 40000 (inclusive) and a filament denier is set to a value in a range of 6.0 to 20.0 (inclusive);
• a crimping step of crimping, by the pair of nip rolls, the plurality of filaments having been aligned in the aligning step;
• and
• a monitoring step of monitoring a thickness dimension of a filament assembly consisting of the plurality of filaments at least any of the position preceding the pair of nip rolls and a position subsequent to the pair of nip rolls in the conveyance direction,
• wherein in the crimping step, the pair of nip rolls of which a ratio TD/D is set to 800 denier/mm to 2000 denier/mm (inclusive) is used, where the total denier is denoted by TD and a roll width dimension of the pair of nip rolls is denoted by D, and
• wherein the tow band is for heated tobacco product tip.

A tow band of cellulose acetate, comprising:

• a bundle of a plurality of united and crimped filaments;
• wherein
• the tow band is for heated tobacco product tip,
• each of the plurality of filaments is a long fiber filament,
• the bundle of the plurality of filaments has a total denier set to a value in a range of 10000 to 20000 (inclusive) and a filament denier set to a value in a range of 6.0 to 12.0 (inclusive), and
• where the total denier is denoted by TD and a breaking strength of the tow band is denoted by F, a ratio F/TD is set to a value of 0.0015 N/denier or more.