AT224455B - HEPA filters for respiratory masks - Google Patents

HEPA filters for respiratory masks

Info

Publication number
AT224455B
AT224455B AT705260A AT705260A AT224455B AT 224455 B AT224455 B AT 224455B AT 705260 A AT705260 A AT 705260A AT 705260 A AT705260 A AT 705260A AT 224455 B AT224455 B AT 224455B
Authority
AT
Austria
Prior art keywords
respiratory masks
filters
hepa filters
filter
desc
Prior art date
Application number
AT705260A
Other languages
German (de)
Original Assignee
Auergesellschaft Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Auergesellschaft Gmbh filed Critical Auergesellschaft Gmbh
Application granted granted Critical
Publication of AT224455B publication Critical patent/AT224455B/en

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  • Respiratory Apparatuses And Protective Means (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Schwebstoffilter für Atemschutzmasken 
Die Erfindung bezieht sich auf Schwebstoffilter für Atemschutzmasken, wobei die Filter aus mehr oder weniger lockeren Filterpapieren bestehen, welche zur Erreichung einer grossen Filterfläche zum Zweck der Erzielung eines   geringen Atemwiderstandes zu Gebilden mit Falten   verschiedener Gestalt geformt sind. 



   Solche Filter werden insbesondere dort eingesetzt, wo silikatische Gesteine oder Gesteine mit silikatischer Gangart verarbeitet werden, weil sie die Arbeiter vor dem aus Kieselsäure bestehenden, bei solchen Arbeiten entstehenden Feinstaub schützen sollen, der die gefährliche Silikose erzeugt. 



   Die Erfindung geht nun von der Erkenntnis aus, dass die Benutzung solcher Filter dadurch erheblich begünstigt wird, wenn man für das Filter schwarzes oder dunkelfarbiges Papier verwendet, weil in diesem Falle die Menge des niedergeschlagenen Staubes sichtbar gemacht ist und dadurch für den Träger des Filters der Anreiz geschaffen wird, solche Filter soviel wie möglich zu benutzen. 



   DieErfindung schlägt nun für solche Schwebstoffilter für Atemschutzmasken die Verwendung von Filterpapier vor, das durch Einlagerung (Einblasung) von dunklen Pulvern, insbesondere Kohlepulver, in seine Poren verdichtet (kolmatiert) worden ist. 



   Bei derartigen Filterpapieren wird durch die Einlagerung nicht nur die erwünschte Dunkelfärbung zur besseren Sichtbarmachung der niedergeschlagenen Stäube, sondern zugleich eine Verdichtung des Filterpapieres erzielt, durch welche dieses für das Zurückhalten besonders feiner silikatischer Stäube (diese wirken sich am gefährlichsten aus) geeignet gemacht ist. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  HEPA filters for respiratory masks
The invention relates to particulate filters for respiratory masks, the filters consisting of more or less loose filter papers which are formed into structures with folds of various shapes in order to achieve a large filter surface for the purpose of achieving a low breathing resistance.



   Such filters are used in particular where silicate rocks or rocks with a silicate gangue are processed, because they are intended to protect the workers from the fine dust consisting of silicic acid which is produced during such work and which produces dangerous silicosis.



   The invention is based on the knowledge that the use of such filters is significantly favored if black or dark-colored paper is used for the filter, because in this case the amount of deposited dust is made visible and therefore the wearer of the filter can see An incentive is created to use such filters as much as possible.



   The invention now proposes the use of filter paper for such suspended matter filters for respiratory masks which has been compacted (clogged) in its pores by storing (blowing in) dark powders, in particular carbon powder.



   With such filter papers, the storage not only achieves the desired dark color for better visualization of the precipitated dust, but also a compression of the filter paper, which makes it suitable for holding back particularly fine silicate dusts (these are the most dangerous).

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENTANSPRUCH : Verwendung von Filterpapier, das durch Einlagerung (Einblasung) von dunklen Pulvern, insbesondere Kohlepulver, verdichtet (kolmatiert) ist, für Schwebstoffilter für Atemschutzmasken, insbesondere zum Schutz gegen silikatische Feinstäube. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Use of filter paper, which is compacted (colmated) by storing (blowing in) dark powders, in particular carbon powder, for suspended matter filters for respiratory masks, in particular for protection against fine silicate dusts. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT705260A 1959-10-31 1960-09-16 HEPA filters for respiratory masks AT224455B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE224455X 1959-10-31

Publications (1)

Publication Number Publication Date
AT224455B true AT224455B (en) 1962-11-26

Family

ID=5856016

Family Applications (1)

Application Number Title Priority Date Filing Date
AT705260A AT224455B (en) 1959-10-31 1960-09-16 HEPA filters for respiratory masks

Country Status (1)

Country Link
AT (1) AT224455B (en)

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