High-performance cigarette filter

A - Human Necessities – 24 – D

Patent

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Details

A24D 3/06 (2006.01) A24D 3/02 (2006.01) A24D 3/04 (2006.01) A24D 3/10 (2006.01)

Patent

CA 2387487

The invention relates to a high performance cigarette filter on the basis of cellulose ester fibers or filaments which can be mechanically disintegrated. The inventive high-performance cigarette filter is characterized in that a) the fiber weight (or filament weight)/draw resistance ratio S based on the filament titer is greater than approximately 0.7, the S value being calculated according to the formula S=(m A / .DELTA.P7.8 / dpf [10 m/daPA], wherein m A refers to the fiber weight, .DELTA. P refers to the draw resistance and dpf represents the filament titer and for the draw resistance the value calculated for a diameter of 7.8 mm is inserted, b) the residual crimping value of the filter material does not exceed the value 1.45, c) the fiber weight amounts to maximally 10 mg/mm of the filter length, and d) the hardness of the cigarette filter is higher than approximately 90 % filtrona hardness. The inventive filter is characterized by an improved disintegratability under environmental conditions vis-à-vis comparable products.

La présente invention concerne un filtre à cigarette hautes performances à base de fibres ou de filaments d'esters de cellulose pouvant être dégradé mécaniquement. Ce filtre à cigarette hautes performances se caractérise en ce que: a) le rapport poids de fibre (ou poids de filament)/résistance à la traction S se basant sur le titre de filament, est supérieur à environ 0,7, la valeur de S étant calculée d'après la formule S = (mA / DELTA P7,8 / dpf [10m/daPA], dans laquelle mA est le poids de fibre, DELTA P est la résistance à la traction et dpf est le titre de filament, et la valeur calculée pour un diamètre de 7,8 mm est utilisée pour la résistance à la traction; b) le reste de la texturation du matériau de filtre ne dépasse pas 1,45; c) le poids de fibre vaut au maximum 10 mg/mm de la longueur du filtre; et d) la dureté du filtre à cigarette est supérieure à environ 90 % de la dureté filtrona. Ce filtre se caractérise par une dégradabilité dans des conditions environnementales améliorée par rapport à des produits de la même catégorie.

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