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    • 71. 发明授权
    • Method and apparatus for the manufacture of cigarette filters containing
particulate material
    • 用于制造含有颗粒材料的香烟过滤嘴的方法和设备
    • US4285677A
    • 1981-08-25
    • US73491
    • 1979-09-07
    • Akira ItoKatsuharu Arisaka
    • Akira ItoKatsuharu Arisaka
    • A24D3/02A24C5/50
    • A24D3/0225
    • Method and apparatus for the manufacture of cigarette filters containing particulate material. Filter material composed of cellulose acetate tow is fed in the axial direction through a gap defined between a first pair of rolls so that the transverse cross-section of the filter material is changed to a substantially oval shape. The filter material is then fed through another gap defined between a second pair of rolls so that the transverse cross-section of the filter material is further changed to a substantially heart shape and at the same time providing pockets at axially spaced positions. Particulate material is deposited in said pockets. The filter material is closed so that the deposited particulate material is positioned in the interior of the filter material and wrapped with wrapping sheets.
    • 用于制造含有颗粒材料的香烟过滤嘴的方法和设备。 由乙酸纤维素丝束组成的过滤材料通过限定在第一对辊之间的间隙在轴向上进给,使得过滤材料的横截面变为大致椭圆形。 然后将过滤材料通过限定在第二对辊之间的另一个间隙进给,使得过滤材料的横截面进一步改变为大致心形,同时在轴向间隔开的位置提供凹穴。 颗粒材料沉积在所述袋中。 过滤材料被封闭,使得沉积的颗粒材料定位在过滤材料的内部并用包裹片包裹。