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AssigneeHauni-Werke Korber & Co. KG
InventorsUwe Heitmann, Heinz-Christen Lorenzen, Gunter Wahle, Rolf Dahlgrun
Estimating the term…
The wrappers of filter cigarettes or analogous rod-shaped articles which constitute or form part of smokers' products and wherein portions of the wrappers have perforations are tested while moving sideways in the flutes of an endless conveyor. The testing involves establishing a less pronounced pressure differential between the interior and exterior of unperforated wrapper portions and a more pronounced pressure differential between the interior and exterior of perforated wrapper portions. An electropneumatic transducer generates first signals which denote the rate of fluid flow through the perforated and unperforated wrapper portions. Such signals are compared with first and second reference signals which respectively denote the maximum permissible and minimum acceptable permeability of wrappers, and the articles wherein the permeability of wrappers exceeds the maximum permissible permeability or is less than the minimum acceptable permeability are segregated from other articles.
A method of testing the wrappers of cigarettes or analogous rod-shaped articles which constitute or form part of smoker's products, comprising the steps of measuring, with a first degree of accuracy, the permeability of a first portion of the wrapper of each of a series of successive articles;
Apparatus for testing the wrappers of rod-shaped articles which constitute or form part of smokers' products, comprising means for moving a series of articles along a predetermined path;
Dependencies are inferred from the claim text.