EP1513590B1 - Filtre de protection respiratoire et procede de fabrication dudit filtre - Google Patents

Filtre de protection respiratoire et procede de fabrication dudit filtre Download PDF

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Publication number
EP1513590B1
EP1513590B1 EP03815530A EP03815530A EP1513590B1 EP 1513590 B1 EP1513590 B1 EP 1513590B1 EP 03815530 A EP03815530 A EP 03815530A EP 03815530 A EP03815530 A EP 03815530A EP 1513590 B1 EP1513590 B1 EP 1513590B1
Authority
EP
European Patent Office
Prior art keywords
filter
filter housing
filter body
housing
respiratory
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 - Lifetime
Application number
EP03815530A
Other languages
German (de)
English (en)
Other versions
EP1513590A1 (fr
Inventor
Andreas Haeuser
Keith KRÜGEL
Wilfried Hoffmann
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.)
MSA Auer GmbH
Original Assignee
MSA Auer 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 MSA Auer GmbH filed Critical MSA Auer GmbH
Publication of EP1513590A1 publication Critical patent/EP1513590A1/fr
Application granted granted Critical
Publication of EP1513590B1 publication Critical patent/EP1513590B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00—Filters for breathing-protection purposes
    • A62B23/02—Filters for breathing-protection purposes for respirators

Definitions

  • the invention relates to a respiratory protection filter according to claim 1.
  • the invention relates to a method for producing a respiratory filter according to claim 7.
  • a method for producing a respirator in which a fine-grained, sorptive or catalytically active material with a meltable polyethylene, which is wetted with an Oligokondensat intensively mixed, and the mixture at certain temperatures and pressures pressed into a shaped body, cooled in the mold and then removed from the mold.
  • the filter housing on its inside a taper having.
  • the filter body is slightly compressed, whereby the filter body assumes a tapered peripheral surface and an interference fit between the filter body and the filter housing is produced.
  • the serving as a press-fitting edge of the filter housing formed of elastic material is folded inwards until the folded edge fits snugly against the inlet surface of the filter body and keeps it in a press fit in the filter housing.
  • the disadvantage here is that when the filter body is consumed, the filter housing and the filter body must be disposed of together, since a loosening of the seated under interference fit in the filter housing filter body is not possible or only with destruction of the filter housing and the filter body.
  • the invention is therefore based on the object to provide a respirator filter of the type mentioned, which is cost-effective in terms of production, use, disposal and reuse.
  • the filter body is a separately produced in a mold, from the gas inlet to the gas outlet conically tapered filter shaped body, which is interchangeably housed in a conical conical filter housing; and that the press-in device comprises a threaded ring, which is screwed to the gas inlet side with the filter housing.
  • the filter body is a conical shaped, separate filter shaped body produced in a molding tool, which is interchangeably accommodated in a filter housing with the same conicity as that of the filter shaped body and held edge-tight in the housing with a press-in device connected to the filter housing becomes. That is, the filter body can easily removed from the mold and gently - without edge damage - placed in a reusable filter housing and temporarily, ie releasably fixed in this and thus be easily replaced after exhaustion of the filter performance. The cost is thereby significantly reduced.
  • a further important feature of the invention is moreover that the production of the shaped filter body in a pocket corresponding to its finished shape takes place from an air-permeable, thin-layered material, in particular a fleece.
  • the still free area can be covered with an air-permeable material, so that the filter body is completely surrounded by an air-permeable and tightly connected to the filter material enclosure.
  • the demolding is further facilitated and the surface of the molded part body additionally protected when introduced into the filter housing.
  • the lateral region of the air-permeable coating material is coated with an air-impermeable material. This allows the gas-tightness at the peripheral edge of the in the Filter housing introduced filter molding are guaranteed even at low pressure.
  • the press-in device is a screwed on the gas inlet side of the filter housing screw ring, which has a directed into the interior of the filter housing, which is supported on the filter body pressing ring.
  • a mixture of a fine-grained sorptive material and a finely divided meltable polymethylene is first prepared with the addition of an adhesion promoter based on oligocondensate.
  • pockets made of an air-permeable nonwoven material are also provided in a deep-drawing process.
  • the filter body Due to the nonwoven covering, which with the material of the filter molding enters an intimate connection, the filter body can be easily removed from the mold and transported without damaging its surface and mounted in a filter housing.
  • the demolding is further facilitated by the fact that the mold and the filter molding are conical.
  • the filter shaped body is then inserted into a likewise conically shaped filter housing with the same conicity as that of the filter molding and gradually pressed so far until by pressing and optionally compressing the nonwoven material in the contact region with the inner wall of the filter housing a gas-tight integration of the fleece-coated conical filter molding in the conical filter housing is guaranteed.
  • the mold filter body is releasably fixed to be able to be easily removed and disposed of with depleted filter capacity.
  • An important effect of the nonwoven wrap is to improve the lubricity of the molded filter body in the filter housing during both assembly and disassembly.
  • the drawing shows a sectional view of the respiratory filter 1 manufactured and constructed according to the method of the invention, comprising a reusable, conically tapered filter housing 2 and a filter shaped body 3, which has the shape of a circular truncated cone.
  • the filter housing 2 has at the air outlet side (suction side) on a connector 4, via which the respirator 1 is directly connected to a mouthpiece or a respirator or a blower filter device (not shown).
  • the filter shaped body 3 is completely surrounded by an envelope 5 consisting of a fleece.
  • an external thread 6 is formed, in which the thread of a Screw ring 7 engages.
  • the screw ring 7 has at a distance from the peripheral edge of a facing the interior of the filter housing 2 pressing ring 8, which is supported on the filter body 3 and this gas-tight when turning the screw ring 7 (edge-tight) in the filter housing 2 and with its lateral surface to the inner peripheral surface of the filter housing 2 presses.
  • the sealing effect of the coating 5 acting as a lubricant and sealant on the lateral peripheral surface of the filter article 3 can be improved by an air-impermeable impregnation (coating) applied in this region of the coating 5.
  • the screw ring 7 is unscrewed from the filter housing 2 and the filter body 3 is removed and replaced by a new one.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • External Artificial Organs (AREA)

Claims (7)

  1. Filtre de protection respiratoire, composé d'un corps de filtre solide formé d'un matériau de sorption et d'un matériau pouvant fondre sous l'effet de la pression et de la chaleur, qui est fixé de façon à présenter des bords étanches dans un boîtier de filtre (2), qui présente du côté de sortie de gaz, un raccordement pour un masque de protection respiratoire ou un appareil de filtrage à ventilateur ou un embout pour un utilisateur, le boîtier de filtre (2) et le corps de filtre présentant une conicité concordante et au boîtier de filtre (2) étant prévu sur son côté d'entrée de gaz un dispositif de compression pour fixer le corps de filtre de façon à présenter des bords étanches sur la paroi intérieure du boîtier de filtre,
    caractérisé en ce que le corps de filtre est un corps de filtre moulé (3) produit de façon séparée dans un outil de moulage, s'effilant coniquement de l'entrée de gaz à la sortie de gaz, qui est logé de façon échangeable dans le boîtier de filtre (2) présentant une conicité concordante, et
    en ce que le dispositif de compression comprend un anneau à visser (7) qui peut être vissé du côté de l'entrée de gaz au boîtier de filtre (2).
  2. Filtre de protection respiratoire selon la revendication 1, caractérisé en ce que l'anneau à visser (7) présente un anneau de compression (8) orienté à l'intérieur du boîtier de filtre (2) s'appuyant sur le corps de filtre moulé (3).
  3. Filtre de protection selon la revendication 1 ou 2, caractérisé en ce que le corps de filtre moulé (3) présente une gaine (5) à couche fine perméable à l'air.
  4. Filtre de protection respiratoire selon la revendication 3, caractérisé en ce que la gaine (5) est revêtue dans la zone de bordure conique du corps de filtre moulé (3) avec une substance imperméable à l'air.
  5. Filtre de protection selon la revendication 3, caractérisé en ce que la gaine (5) est un tissu non tissé.
  6. Filtre de protection selon la revendication 3, caractérisé en ce que la gaine (5) est liée adhésivement au corps de filtre moulé (3).
  7. Procédé de production d'un filtre de protection respiratoire composé d'un corps de filtre solide formé d'un matériau de sorption et d'un matériau pouvant fondre sous l'effet de la pression et de la chaleur, qui est fixé de façon à présenter des bords étanches dans un boîtier de filtre, qui présente du côté de sortie de gaz, un raccordement pour un masque de protection respiratoire ou un appareil de filtrage à ventilateur ou un embout pour un utilisateur, le boîtier de filtre et le corps de filtre présentant une conicité concordante et au boîtier de filtre étant prévu sur son côté d'entrée de gaz un dispositif de compression pour fixer le corps de filtre de façon à présenter des bords étanches sur la paroi intérieure du boîtier de filtre, caractérisé en ce que l'on place dans un outil de moulage, une poche emboutie selon la forme de l'outil de moulage est qui se compose d'un matériau de gaine perméable à l'air et elle est remplie d'un mélange de matériau de sorption et d'un matériau pouvant être fondu qui est comprimé sous l'effet de la chaleur en un corps de filtre moulé (3) avec une liaison adhésive au matériau de gaine, et en ce que le corps de filtre moulé (3) ainsi produit est compressé, en présentant des bords étanches, comme un élément séparé détachable et échangeable dans un boîtier de filtre réutilisable (2).
EP03815530A 2003-01-30 2003-12-19 Filtre de protection respiratoire et procede de fabrication dudit filtre Expired - Lifetime EP1513590B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10304216A DE10304216B3 (de) 2003-01-30 2003-01-30 Atemschutzfilter und Verfahren zu dessen Herstellung
DE10304216 2003-01-30
PCT/DE2003/004266 WO2004067094A1 (fr) 2003-01-30 2003-12-19 Filtre de protection respiratoire et procede de fabrication dudit filtre

Publications (2)

Publication Number Publication Date
EP1513590A1 EP1513590A1 (fr) 2005-03-16
EP1513590B1 true EP1513590B1 (fr) 2011-08-03

Family

ID=32797311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03815530A Expired - Lifetime EP1513590B1 (fr) 2003-01-30 2003-12-19 Filtre de protection respiratoire et procede de fabrication dudit filtre

Country Status (5)

Country Link
EP (1) EP1513590B1 (fr)
AT (1) ATE518567T1 (fr)
AU (1) AU2003296551A1 (fr)
DE (1) DE10304216B3 (fr)
WO (1) WO2004067094A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008148151A1 (fr) * 2007-06-08 2008-12-11 Compumedics Medical Innovation Pty Ltd Filtre à pression positive continue (cpap)
US9440775B2 (en) * 2014-05-22 2016-09-13 3M Innovative Properties Company Prefilter cover for bidirectional-airflow respirator cartridge
EP3928839A3 (fr) 2020-06-02 2022-03-16 Dräger Safety AG & Co. KGaA Unité de filtre dotée d'un filtre rigide et d'une gaine flexible, ainsi que procédé de fabrication d'un tel filtre

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744525A (en) * 1953-01-15 1956-05-08 Chicago Eye Shield Company Respirator
GB1449999A (en) * 1973-07-04 1976-09-15 Pirelli Container
WO1996022128A1 (fr) * 1995-01-20 1996-07-25 Minnesota Mining And Manufacturing Company Masque respiratoire et cartouche filtrante

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB523240A (en) * 1938-09-05 1940-07-09 Jaroslav Jan Pala Improvements in or relating to gas-protective filters
FR2322617A1 (fr) * 1975-09-04 1977-04-01 Arbel Industrie Masque respiratoire a cartouches filtrant l'air ambiant
US4601287A (en) * 1981-04-01 1986-07-22 Royce Jr George H Heated survival face mask
US5078132A (en) * 1985-08-28 1992-01-07 Minnesota Mining And Manufacturing Company Bonded adsorbent structures and respirators incorporating same
US4883547A (en) * 1987-03-02 1989-11-28 Minnesota Mining And Manufacturing Company Method of forming a high efficiency respirator
US6216693B1 (en) * 1995-01-20 2001-04-17 3M Innovative Properties Company Respirator having a compressible press fir filter element
FR2750869B1 (fr) * 1996-07-11 1998-11-06 Commeinhes Remco Appareil respiratoire a fonctionnement en circuit ferme
DE19714350B4 (de) * 1997-03-26 2004-12-02 Auergesellschaft Gmbh Polymergebundenes körniges ad-, ab-, chemisorptiv oder katalytisch wirkendes Material und Verfahren zur Herstellung von Formkörpern aus diesem Material
DE10021582B4 (de) * 2000-04-27 2004-07-15 Auergesellschaft Gmbh Verfahren und Vorrichtung zur Herstellung eines Atemschutzfilters

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2744525A (en) * 1953-01-15 1956-05-08 Chicago Eye Shield Company Respirator
GB1449999A (en) * 1973-07-04 1976-09-15 Pirelli Container
WO1996022128A1 (fr) * 1995-01-20 1996-07-25 Minnesota Mining And Manufacturing Company Masque respiratoire et cartouche filtrante

Also Published As

Publication number Publication date
ATE518567T1 (de) 2011-08-15
AU2003296551A1 (en) 2004-08-23
EP1513590A1 (fr) 2005-03-16
DE10304216B3 (de) 2004-10-14
WO2004067094A1 (fr) 2004-08-12

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