Coaxial filter rod with double permeability

Abstract

The invention provides a coaxial filter rod with double permeability. The coaxial filter rod is sequentially provided with external-layer forming paper, external-layer trench cellulose paper, an external-layer cellulose acetate fiber filter core, internal-layer forming paper, internal-layer trench cellulose paper and an internal-layer cellulose acetate fiber filter core. An internal core and an external core are made by adoption of cellulose acetate tows having different fiber specifications / different numbers of fibers such that smoke pressure drop of the internal core is smaller than that of the external core. The internal core adopts the specification / number of cellulose acetate fibers of 11Y / 15000. The external core adopts the specification / number of cellulose acetate fibers of 7.5Y / 16000 or 7.5 / 16000.The coaxial filter rod with double permeability has following beneficial effects: a large amount of smoke flows through the internal core; bidirectional flow between internal and external layers of tows and trench cellulose paper is generated, thereby increasing a smoke flow path and a filtering area; and as a result, much more smoke particulates are intercepted so that tar amount and CO emission quantity of an cigarette are effectively decreased.

Description

technical field [0001] The invention relates to a raw material, structure and shape of a coaxial filter rod. Background technique [0002] Common filter rods include ordinary acetate filter rods, grooved filter rods, and coaxial core filter rods. Regardless of the type, the smoke permeability of the entire filter rod and filter element is basically the same. The coaxial core filter rod is made by wrapping the inner filter body with the outer filter body. The cross section is two circles whose centers coincide on the same plane but with different radii. The main advantage of the conventional coaxial core filter rod is that its cross section Has a unique visual effect. [0003] The existing coaxial core filter rod is limited by the specification of the tow, and the tow of the same specification of 6.0Y / 17000 is generally selected, and the pressure drop of the inner core of the filter rod is high due to the high pressure of the tow when the inner layer is rolled. , the pressu...

AI Technical Summary

Problems solved by technology

This utility model has a good harm reduction and coke reduction effect, but there is no difference between the inner and outer filter elements, and there is no adjustment function for the temperature of the flue gas and the flue gas circulation path, and the specification of the tow is not mentioned.

Due to the addition of graphene oxide, there will inevitably be a difference in hardness between the inner core and the outer layer, and the outer layer and the inner core will easily separate when the cigarette is connected to the filter rod, which will affect the use of the filter rod on the cigarette.

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