| 摘要 |
<p>A method of manufacturing composite filters for cigarettes, cigars and similar tobacco products, on a twin track machine, involves generating a succession of filter sticks of a first type, made from a first filter material and/or having first filtration properties, and at least one other succession of filter sticks of a different type, made from a respective different filter material and/or having filtration properties different to those of the first type; cross-cutting the filter sticks of the first type and the filter sticks of the different type on at least one transverse cutting line to obtain a succession of first and second plugs of the first type and a succession of first and second plugs of the different type; arranging the first plugs of the first type and the first plugs of the different type in alternation one with another to create a first filter rod, and arranging the second plugs of the first type and the second plugs of the different type in alternation one with another to create a second filter rod; checking the position of at least one first plug of the first rod, relative to a corresponding second plug of the second rod; and correcting the position of the at least one transverse cutting line according to the relative positioning of the first and second plugs.</p> |
