DE638129C - Method for filling the housing of respiratory protection filters with a suspended matter filter layer made of loose fibers - Google Patents

Method for filling the housing of respiratory protection filters with a suspended matter filter layer made of loose fibers

Info

Publication number
DE638129C
DE638129C DED63232D DED0063232D DE638129C DE 638129 C DE638129 C DE 638129C DE D63232 D DED63232 D DE D63232D DE D0063232 D DED0063232 D DE D0063232D DE 638129 C DE638129 C DE 638129C
Authority
DE
Germany
Prior art keywords
housing
filter
filling
loose fibers
suspended matter
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
DED63232D
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 DED63232D priority Critical patent/DE638129C/en
Application granted granted Critical
Publication of DE638129C publication Critical patent/DE638129C/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00Filters for breathing-protection purposes

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Filtering Materials (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Description

Verfahren zum Füllen des Gehäuses von Atemschutzftltern niit einer aus losen Fasern bestehenden Schwebstoffilterschicht Atemschutzfilter, die in bekannter Weise eine aus losen Fasern bestehende Schwebgtoffilterschicht enthalten, weisen den Nachteil auf, daß die Schwebstoffilterschicht sich bei Stößen gegen das Filter leicht von der Wandung des Filtergehäuses ablöst. Es bilden sich dann zwischen der Schwebstoffilterschicht und der Gehäusewandung sog, Kurischlußwege, durch welche die Schwebstoffe hindurchtreten können.Method of filling the housing of respiratory protective devices with a HEPA filter sheet made of loose fibers respiratory protection filters, which are known in Way contain a suspended matter filter layer consisting of loose fibers the disadvantage that the suspended matter filter layer is in impact against the filter easily detached from the wall of the filter housing. It then forms between the HEPA filter layer and the housing wall so-called, Kurischlußwege, through which the suspended matter can pass through.

Dieser Nachteil soll gemäß der Erfindung dadurch beseitigt werden, daß die Schwebstoffilterm,asse in folgender Weise in das Gehäuse des Atemschutzfilters ;eingefüllt wird: Man überzieht zunächst die Innenfläche des Filtergehäuses, soweit die Schwebstofffilterschicht sich erstrecken soll, mit einer dünnen Schicht .eines bei Erwärmung Atreichbaren, bei Erkaltung fest, aber nicht spröde werdenden Klebstoffes mit vorzugsweise glatter Oberfläche, beispielsweise mit einer Schicht aus Marineleim. Nach dem Erkalten des Klebstoffes bringt man die SchwebstofE-filtermasse unter leichter Pressung in das Filtergehäuse ein und verschließt dieses, z. B. durch Umbördeln des Randes, mit einem gelochten Deckel. Hierauf erwärmt man das Filtergehäuse bis zur Erweichungstemperatur des Klebstoffes und läßt @es dann wieder erkalten.According to the invention, this disadvantage is to be eliminated by that the HEPA filter asse in the housing of the respiratory protection filter in the following way ; is filled: The inner surface of the filter housing is first covered as far as the particulate filter layer should extend, with a thin layer .eines Adhesive that is accessible when heated, solid but not brittle when cooled with a preferably smooth surface, for example with a layer of marine glue. After the adhesive has cooled down, the suspended matter filter compound is placed under lighter weight Pressing into the filter housing and closes it, for. B. by flanging of the edge, with a perforated lid. The filter housing is then heated up to to the softening temperature of the adhesive and then let it cool down again.

Auf diese Weise wird die Schwebstofffilterschicht fest mit der Wandung des Filtergehäuses verbunden, da die unter leichter Pressung eingefüllten Fasern einen, wenn auch geringen, radialen Druck auf die Wandung des Filtergehäuses ausüben, und dieser Druck genügt, um die am Rande der Filtermasse befindlichen Faserteilchen in die durch das Erwärmen weichgewordene dünne Klebstoffschicht hineinzuschieben. Beim Erkalten wird die Klebstoffschicht fest, so daß die äußersten Randteilchen der Filtermasse in der Klebstoftschicht verankert und auf diese Weise mit der Gehäusewandung verbunden werden. Dadurch bekommt auch die gesamte Sch#ebstoffilterschicht einen ausreichenden Halt im Filtergehäuse, so daß sie selbst bei starken Stößen, wenn z. B. das Filter fallengelassen wird, sich nicht von der Gehäusewandung löst und keine Kurzschlußwege entstehen können.In this way, the particulate filter layer becomes firmly attached to the wall of the filter housing, as the fibers are filled in under slight pressure exert a radial pressure, albeit a small one, on the wall of the filter housing, and this pressure is sufficient to remove the fiber particles located on the edge of the filter mass push it into the thin layer of adhesive that has become softened by the heating. When it cools down, the adhesive layer solidifies, so that the outermost edge particles the filter mass anchored in the adhesive layer and in this way with the housing wall get connected. This also gives the entire dust filter layer one sufficient hold in the filter housing, so that they even with strong impacts, if z. B. the filter is dropped, does not come off the housing wall and no short-circuit paths can arise.

Es ist zwar schon bekanntgeworden, bei Atemschutzfiltern mit gekörnter Chemikalienfüllung die Innenwandung des Filtergehäuse durch aufgeklebte Chemikalien rauh zu machen, um die Bildurig von Kurzschlußwegen zwischen der Filtermasse und der Gehäusewandung zu verhindern. Das bekannte Verfahren ist jedoch wesentlich umständlicher als das Verfahren nach der Erfindung und auch für das Einfüllen einer Schwebstofffilterschicht aus losen Fasern nicht brauchbar, weil eine auf die Gehäusewandung aufgeklebte Faserschicht das gleichmäßige Einfüllen der Filtermasse infolge der auftretenden Reibung verhindern würde. Demgegenüber ist das. neue Verfahren den Eigenschaften der aus losen, Fasern bestehenden Schwebstoffiltermasse eng angepaßt. Es; ermöglicht ein schnelles und gleichmäßiges Einfüllen dieser Filtermasse und beeinträchtigt die Wirksamkeit des Schwebstoffilters in keiner Weise.It has already become known for respiratory protection filters with grained Chemical filling the inner wall of the filter housing with glued chemicals rough to make the picture of short-circuit paths between the filter mass and to prevent the housing wall. However, the known method is much more cumbersome as the method according to the invention and also for the filling of a particulate filter sheet made of loose fibers cannot be used because a fiber layer is glued to the housing wall prevent the even filling of the filter material as a result of the friction that occurs would. In contrast, the new process is the properties of the HEPA filter mass made up of loose fibers, closely matched. It; enables a quick and even filling of this filter mass and impaired the effectiveness of the particulate filter in no way.

Claims (1)

PATENTANSPRUCH: Verfahren zum Füllen des Gehäuses von Atemschutzfiltern mit einer aus losen Fasern bestehenden Schw ebstoffilterschicht, dadurch gekennzeichnet, daß die Innenfläche des- Filtergehäuses mit einer düneziz;Schicht eines bei Erwärmung streichren,, bei _Erkaltung fest, aber nicht @S . .l"ode werdenden Klebstoffes überzogen d, die Filtermasse nach dem Erkalten der Klebstoffschicht unter leichter Pressung in das Filtergehäuse eingebracht wird und darauf das vorzugsweise durch einen gelochten Deckel verschlossene Filtergehäuse bis zur Erweichungstemperatur des Klebstoffes erwärmt wird.Claim: A method for filling the housing of respiratory protection filters with a floating filter layer consisting of loose fibers, characterized in that the inner surface of the filter housing is coated with a thin layer of a layer of when heated, solid when cold, but not @S . .l "or the adhesive being coated d, the filter mass is introduced into the filter housing after the adhesive layer has cooled down with slight pressure and then the filter housing, which is preferably closed by a perforated cover, is heated to the softening temperature of the adhesive.
DED63232D 1932-04-02 1932-04-02 Method for filling the housing of respiratory protection filters with a suspended matter filter layer made of loose fibers Expired DE638129C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED63232D DE638129C (en) 1932-04-02 1932-04-02 Method for filling the housing of respiratory protection filters with a suspended matter filter layer made of loose fibers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED63232D DE638129C (en) 1932-04-02 1932-04-02 Method for filling the housing of respiratory protection filters with a suspended matter filter layer made of loose fibers

Publications (1)

Publication Number Publication Date
DE638129C true DE638129C (en) 1936-11-10

Family

ID=7058660

Family Applications (1)

Application Number Title Priority Date Filing Date
DED63232D Expired DE638129C (en) 1932-04-02 1932-04-02 Method for filling the housing of respiratory protection filters with a suspended matter filter layer made of loose fibers

Country Status (1)

Country Link
DE (1) DE638129C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1142504B (en) * 1960-08-13 1963-01-17 Draegerwerk Ag Method for gluing the chemical in air cleaning cartridges for respiratory protection devices
DE1196320B (en) * 1959-10-21 1965-07-08 Andre Pierre Osmond Bizet Absorption device for Saerge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1196320B (en) * 1959-10-21 1965-07-08 Andre Pierre Osmond Bizet Absorption device for Saerge
DE1142504B (en) * 1960-08-13 1963-01-17 Draegerwerk Ag Method for gluing the chemical in air cleaning cartridges for respiratory protection devices

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