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Composite additive materials

A technology of additive materials and composite materials, applied in cation exchange materials, alkali metal compounds, tobacco, etc., can solve problems such as unpredictability and inconsistency of filter elements

Inactive Publication Date: 2012-12-05
BRITISH AMERICAN TOBACCO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is clearly unacceptable as this would result in inconsistent and unpredictable characteristics of the filter element (including filtering effect)

Method used

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  • Composite additive materials
  • Composite additive materials
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Embodiment Construction

[0022] The use of a composite material comprising two or more different additive materials according to the invention overcomes the above-mentioned problem of separate addition of two particulate additive materials.

[0023] The additives to be incorporated into the composite material according to the invention are generally those incorporated in filters of smoking articles. They generally provide beneficial properties to the filter, enhance the filtering properties of the filter, improve the properties of the filtered smoke, or provide some beneficial property to the smoking article as a whole. Additives are often materials with adsorptive properties.

[0024] The use of more than one additive in a filter is attractive because doing so allows the properties or characteristics of the filter to be tailored or tailored to provide a specific combination of benefits. For example, different adsorbent materials may have higher selectivities for different smoke constituents.

[002...

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Abstract

The invention relates to composite materials comprising particles of at least two different additive materials and a polymer binding said additive particles together the composite material. The invention also relates to incorporating at least two different additive materials into a filter material, using the composite material.

Description

【Technical field】 [0001] The present invention relates to aggregated or agglomerated additives for inclusion in filters of smoking articles. More specifically, it relates to aggregates or agglomerates comprising at least two filter additives and polymers. The invention also relates to aggregates of particulate additive materials and powders utilizing polymers as binders, and the use of such aggregates. 【Background technique】 [0002] It is known to incorporate additives in filters of smoking articles for various purposes. Many of these additives are in granular form. [0003] For example, it is known to incorporate porous carbon materials in smoking articles and smoke filters to reduce the level of certain materials in the smoke. Porous carbon materials can be produced in many different ways, including activation treatments. The physical characteristics of porous carbon materials include particle shape and size, particle size distribution in the sample, loss rate of part...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24D3/12A24D3/16B01J47/00B01J20/28
CPCB01J20/2803B01J20/06B01J20/20A24D3/163B01J39/20B01J20/16B01J47/007A24D3/16A24D3/12B01J47/018
Inventor P.布兰顿M.莫拉
Owner BRITISH AMERICAN TOBACCO CO LTD