Abstract: One mode of the invention relates to a producing a device for chopped fiber bundles having a chopper unit including a cutting blade for cutting long fiber bundles, a guide for restricting the travel direction of the fiber bundles to be supplied to the cutting means, and a structure, provided between the chopper unit and the guide, that widens the fiber bundles. The invention also relates to method for producing chopped fiber bundles by widening fiber bundles while restricting the travel direction of the long fiber bundles to be supplied to chopper unit by a guide, and obtaining chopped fiber bundles by cutting the fiber bundles with the chopper unit.

Abstract: One mode of the invention relates to a producing a device for chopped fiber bundles having a chopper unit including a cutting blade for cutting long fiber bundles, a guide for restricting the travel direction of the fiber bundles to be supplied to the cutting means, and a structure, provided between the chopper unit and the guide, that widens the fiber bundles. The invention also relates to method for producing chopped fiber bundles by widening fiber bundles while restricting the travel direction of the long fiber bundles to be supplied to chopper unit by a guide, and obtaining chopped fiber bundles by cutting the fiber bundles with the chopper unit.

Abstract: A method and device for forming a cigarette filter rod. The method is as follows: in a process of continuously conveying forward cigarette filter materials that tend to converge to have a rod shape, multiple granular additives are continuously output in accordance with a certain time interval, and are sprayed into the cigarette filter materials that converge forwards under the action of continuous transporting flows, so that after the cigarette filter materials converge to form a continuous filter rod, multiple groups of additive unit combinations formed of different granular additive units are embedded in an axial direction of the filter rod.