DE716066C - Process for the manufacture of filters for suspended matter - Google Patents

Process for the manufacture of filters for suspended matter

Info

Publication number
DE716066C
DE716066C DED72309D DED0072309D DE716066C DE 716066 C DE716066 C DE 716066C DE D72309 D DED72309 D DE D72309D DE D0072309 D DED0072309 D DE D0072309D DE 716066 C DE716066 C DE 716066C
Authority
DE
Germany
Prior art keywords
fibers
filters
manufacture
suspended matter
filter
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DED72309D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BERNH DRAEGER
Draegerwerk AG and Co KGaA
Original Assignee
BERNH DRAEGER
Draegerwerk AG and Co KGaA
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 BERNH DRAEGER, Draegerwerk AG and Co KGaA filed Critical BERNH DRAEGER
Priority to DED72309D priority Critical patent/DE716066C/en
Application granted granted Critical
Publication of DE716066C publication Critical patent/DE716066C/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00—Filters for breathing-protection purposes

Description

Verfahren zum Herstellen von Schwebstoffiltern Die Erfindung betrifft ein Verfahren zum Herstellen von Schwebstoffiltern aus tierischen Fasern und besteht darin, daß man aus tierischen Häuten erzeugte Fasern für sich oder in Mischung mit anderen tierischen oder pflanzlichen Fasern in einen Filtereinsatz einbringt und sie dann durch Gerben härtet. Zum Gerben benutzt man vorzugsweise Formaldehyddampf.Method of Making HEPA Filters The invention relates to a method for manufacturing particulate filters from animal fibers and consists in that one made from animal hides fibers alone or in a mixture with introduces other animal or vegetable fibers into a filter insert and it then hardens by tanning. Formaldehyde vapor is preferably used for tanning.

Die in an sich bekannter Weise hergestellten Fasern aus Häuten haben infolge ihrer , chemischen Konstitution als Eiweißstoffe eine besonders günstige schwebstoffauffangende Wirkung. Durch Gerben lassen sich diese Fasern so härten, daß sie durch Wasser nicht mehr quellbar sind.The fibers made from hides in a manner known per se as a result of its chemical constitution, it is a particularly favorable protein substance Suspending effect. By tanning these fibers can be hardened that they are no longer swellable by water.

Nach der Erfindung wird also das Filter unter Verwendung von Fasern gebaut, die durch den Abbau tierischer Häute gewonnen werden, also aus zunächst quellbaren Fasern. Erst durch den Gerbungsvorgang werden diese Fasern unquellbar gemacht.According to the invention, the filter is made using fibers built, which are obtained by breaking down animal hides, i.e. from initially swellable fibers. It is only through the tanning process that these fibers cannot swell made.

Diese Eigenschaft unterscheidet sie vorteilhaft von den aus Pflanzenfasern hergestellten Filtern, deren Fasern quellbar sind. Gegenüber den weniger stark quellbaren Schwebstoffiltern aus Haaren und Wolle haben die Schwebstoffilter aus gegerbter Hautfaser den Vorteil, daß man die Filter naß aufarbeiten und für das Schwebstoffilter passend formen kann und daß man sie dann im Filtereinsatz selbst härten kann, so daß das Schwebstofffilter seine ihm im feuchten Zustand gegebene Form beibehält. Man kann also dem Filter eine beliebige, auch kompliziertere Gestalt geben, als es bei Verwendung von Haaren oder Wolle möglich ist. Bisher war es nur möglich, Gegenstände aus Haaren oder Wolle dadurch zu festen Schichten zu machen, daß man sie stark preßte und dabei innig verfilzte. Dadurch wird der Widerstand des Filters unangenehm hoch. Einer solchen Pressung mit ihren unerwünschten Folgen bedarf die Herstellung eines Filters nach der Erfindung nicht.This property distinguishes them advantageously from those of vegetable fibers manufactured filters, the fibers of which are swellable. Compared to the less swellable HEPA filters made from hair and wool have the HEPA filters made from tanned Skin fiber has the advantage that you can work up the filter wet and for the HEPA filter can shape appropriately and that you can then harden them in the filter insert itself, so that the HEPA filter retains its given shape in the moist state. So you can give the filter any shape, even more complicated than it is possible when using hair or wool. So far it was only possible To make objects out of hair or wool into solid layers by it pressed hard and felt deeply in the process. This increases the resistance of the filter uncomfortably high. Such a pressure with its undesirable consequences requires the Manufacture of a filter according to the invention does not.

Claims (1)

PATENTANSPRUCH: Verfahren zum Herstellen von Schwebstoffiltern aus tierischen Fasern, dadurch gekennzeichnet, daß man aus tierischen Häuten erzeugte Fasern für sich oder in Mischung mit anderen tierischeix oder pflanzlichen Fasern in einen Filtereinsatz einbringt und sie dann durch Gerben härtet. Claim: A method for producing filters for suspended matter from animal fibers, characterized in that fibers produced from animal skins are introduced into a filter insert by themselves or in a mixture with other animal or vegetable fibers and they are then hardened by tanning.
DED72309D 1936-03-11 1936-03-11 Process for the manufacture of filters for suspended matter Expired DE716066C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED72309D DE716066C (en) 1936-03-11 1936-03-11 Process for the manufacture of filters for suspended matter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED72309D DE716066C (en) 1936-03-11 1936-03-11 Process for the manufacture of filters for suspended matter

Publications (1)

Publication Number Publication Date
DE716066C true DE716066C (en) 1942-01-12

Family

ID=7061073

Family Applications (1)

Application Number Title Priority Date Filing Date
DED72309D Expired DE716066C (en) 1936-03-11 1936-03-11 Process for the manufacture of filters for suspended matter

Country Status (1)

Country Link
DE (1) DE716066C (en)

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