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Filter, smoking articles containing the same, filter strands and methods and devices for producing filters and smoking articles of this type

A technology of tobacco products and filters, applied in the field of cigarettes

Inactive Publication Date: 2007-01-17
PHILIP MORRIS PROD SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A problem with the existing PSP filters noted here is that the filter element has a tendency to return to its original position after removal

Method used

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  • Filter, smoking articles containing the same, filter strands and methods and devices for producing filters and smoking articles of this type
  • Filter, smoking articles containing the same, filter strands and methods and devices for producing filters and smoking articles of this type
  • Filter, smoking articles containing the same, filter strands and methods and devices for producing filters and smoking articles of this type

Examples

Experimental program
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Embodiment Construction

[0046] figure 1A cigarette 35 having a filter 10 is shown. Viewed from the suction side of the filter 10 , the filter element 12 can be seen cut from its middle and approximately along its longitudinal direction into two parts, one of which moves towards the central filter element 16 . Furthermore, it can be seen that the two parts of the filter element 12 form a slight bulge at their protruding ends, which bulge prevents a return to the starting position. The central filter element 16 is filled entirely with activated carbon 17 . The second filter element 14 is connected to the central filter element 16 . The filter elements 12 and 14 are wrapped in a wrapping material 22 made of porous wrapping paper having approximately 10,000 Coresta units. The filter 10 as a whole is surrounded by an outer wrapper 20 also made of a porous wrapper having approximately 10,000 Coresta units. The filter 10 is combined with a tobacco rod 32, to which the second terminal filter element 14 a...

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PUM

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Abstract

The invention relates to a filter (10) for tobacco products, comprising a first end filter element (12), a second end filter element (14) and a central filter element (16), located between the first and the second end filter element and containing a granular filter material and a wrapping (20), one part of one of the end filter elements (12) being displaceable in relation to the wrapping (20). The invention also relates to smoking articles comprising filters of this type, to filter strands comprising two or more of the filters and to methods and devices for producing filters and tobacco products of this type.

Description

field of invention [0001] The present invention relates to a filter for smoking articles having a first terminal filter element, a second terminal filter element, an intermediate filter element located between the first terminal filter element and the second terminal filter element and comprising a granular filter material A filter element and an outer packaging; a smoking article with such a filter, especially a cigarette; a filter rod with two or more filters; and a method and device for manufacturing the filter and the smoking article. Background technique [0002] Such filters are widely used in smoking articles such as cigarettes, and are called plug-space-plug filters (PSP filters) or box filters. [0003] PSP filters are usually not made by cigarette manufacturers, but by suppliers. To this end, the filter rods on the suction side and on the tobacco side are placed on the outer packaging, the length of the terminal filter rods corresponds to the length of the filter ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24D3/02A24D3/04A24D1/04A24D3/16
CPCA24D3/0225A24D3/0262A24D3/02
Inventor 迈克尔·劳恩施泰因丹特·M·博伊多雷纳尔德·M·埃施利曼
Owner PHILIP MORRIS PROD SA