The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 10, 1986
Filed:
Aug. 03, 1981
Edward G Preston, London, GB;
David B Stewart, Dundee, GB;
Molins Limited, , GB;
Abstract
Filler material, particularly for cigarette filters, is produced by feeding a stream of substantially continuous fibres of filter material onto a pin roller having a surface carrying sharp projections in the form of pins and the pin roller is driven at a speed such that the fibres are rapidly accelerated so as to be broken by the pins into irregular lengths and are projected from the roller in random orientations. The broken fibres may be collected as a stream for delivery to a rod-making unit by showering onto a conveyor band, by continuously rolling the fibres between cooperating rollers, or pneumatically. More than one stream could be supplied to the pin roller, so that the broken fibres can comprise a mixture of fibres of different filter materials. The broken fibres may be received on a substantially continuous carrier stream, comprising similar or different filtering material, before the fibres and carrier stream are formed into filter rod.