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Filter material for cleaning air and gases

A filter material and air purification technology, applied in the fields of filtration and separation, the method of reacting gas medium with gas medium, chemical/physical process, etc., can solve the problems of difficult biodegradation, slow degradation or decomposition, unfavorable chemical stability, etc.

Active Publication Date: 2014-12-10
MCAIRLAIDS VLIESSTOFFE GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By chemically modifying the cellulose to cellulose acetate, the fiber can no longer be used as a nutritional basis for microorganisms, i.e. it is resistant to attack by moulds, fungi or bacteria, but is therefore at the same time difficult to biodegrade
The stated chemical stability is disadvantageous in cigarette filters because they degrade or decompose only very slowly

Method used

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  • Filter material for cleaning air and gases
  • Filter material for cleaning air and gases
  • Filter material for cleaning air and gases

Examples

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Embodiment Construction

[0012] In a possible embodiment, the filter material has an additional layer in addition to the fiber layer of compressed pulp fibers on at least one flat side. It is also possible for the filter material to have additional layers on both sides of the plane, wherein the additional layers can be of the same or different material from one another. The materials that can be used for this additional layer can be, for example, tissue paper, woven, nonwoven-like and / or film-like materials. Preferably, the material for the one or more additional layers also consists of cellulose or a well-biodegradable plastic material. The one or more additional layers increase the strength of the filter material and thus facilitate processability in high-speed machines.

[0013] In one embodiment of the invention it is proposed that the pulp fibers and optionally one or more additional layers are pressed in the pressing zone under thermal shock.

[0014] In one possible embodiment, the fiber laye...

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Abstract

The invention relates to a filter material for cleaning air and gases, comprising a fiber layer (2) made of cellulose fibers bonded to each other in segments by pressing, thus compacting the cellulose fibers in the pressed areas (4).

Description

technical field [0001] The invention relates to a filter material for purifying air or gas, a filter for purifying air or gas, and the application of the filter material in cigarette filters and in dust removal equipment and gas purification equipment. Background technique [0002] Filter materials for air and gas purification, referred to as "gas filters", are used to filter out unwanted suspended matter, such as pathogens, pollen, dust or foreign gases, from air or gas. The main fields of application are in industries that emit dust, such as paper and cement; in ventilation installations, to prevent harmful substances in living and working places; and in vacuum cleaners, to purify the exhausted air. [0003] Another field of application is the use as a filter in tobacco products, for example in cigarettes. Said cigarette filter should reduce the proportion of substances harmful to health, such as concentrates and gases in cigarette smoke. Also, the smoke is somewhat mild...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/18
CPCB01D39/18Y10S55/05
Inventor A·施密特
Owner MCAIRLAIDS VLIESSTOFFE GMBH & CO KG