METHOD AND APPARATUS FOR MANUFACTURING FILTERS FOR SMOKING ARTICLES

摘要

There is provided a method and apparatus for manufacturing filters for smoking articles. The method comprises providing hollow tubes (309) of filter material. Each hollow tube has an outer diameter and an inner diameter. The method further comprises providing filter inserts (205). Each filter insert (205)has a first portion having a cross sectional dimension larger than the inner diameter of the hollow tube. The method further comprises inserting each filter insert (205) into a hollow tube (309) of filter material. During inserting, the first portion of the filter insert (205) engages with the hollow tube (309) to retain the filter insert in the hollow tube.

主权项

1. A method for manufacturing filters for smoking articles, the method comprising the steps of:
providing hollow tubes of filter material, each hollow tube having an outer diameter and an inner diameter; providing filter inserts, each filter insert having a first portion having a cross sectional dimension larger than the inner diameter of the hollow tubes; and inserting each filter insert into a hollow tube of filter material such that, during inserting, the first portion of the filter insert engages with the hollow tube to retain the filter insert in the hollow tube, wherein the filter insert is substantially spherical, the cross sectional dimension of the first portion of the filter insert being a diameter of the spherical filter insert.