DE728093C - Process for the production of a particulate filter formed from sector-shaped molded pieces - Google Patents

Process for the production of a particulate filter formed from sector-shaped molded pieces

Info

Publication number
DE728093C
DE728093C DEA88319D DEA0088319D DE728093C DE 728093 C DE728093 C DE 728093C DE A88319 D DEA88319 D DE A88319D DE A0088319 D DEA0088319 D DE A0088319D DE 728093 C DE728093 C DE 728093C
Authority
DE
Germany
Prior art keywords
sector
pieces
filter formed
shaped
production
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
DEA88319D
Other languages
German (de)
Inventor
Robert Vorbau
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.)
Auergesellschaft GmbH
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
Priority to DEA88319D priority Critical patent/DE728093C/en
Application granted granted Critical
Publication of DE728093C publication Critical patent/DE728093C/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

Description

Verfahren zum Herstellen eines aus sektorförmigen Formstücken gebildeten Schwebstoffilters Die Erfindung betrifft ein Verfahren zum Herstellen eines aus sektorförmigen Formstücken gebildeten Schwebstoffilters, dessen Oberfläche derart gefaltet ist, daß .die Falten gleichachsig ineinanderliegende Ringe bilden.Method for producing a formed from sector-shaped moldings Particulate matter filter The invention relates to a method for producing a Sector-shaped fittings formed HEPA filter, the surface of which is folded that .die folds form coaxially nested rings.

Es ist bereits bekannt, ein Schwebstofffilter aus einem sektorförmigen Formstück herzustellen; bei diesem Verfahren bietet die Verklebung der beiden Schnittkanten eines solchen Formstückes Schwierigkeiten.It is already known, a HEPA filter from a sector-shaped Manufacture fitting; In this process, the two cut edges are glued together such a fitting difficulties.

Die Erfindung besteht nun darin, daß mindestens. zwei sektorförmige Stücke eines Filterstoffes, der aus :einer zusammenhängenden Fasermasse, z. B. Papier oder Filz, besteht, zunächst gefaltet, dann um die Spitze des Sektors herumgebogen und gegeb:enenfall.s unter Befestigung durch eine Klemme gedämpft werden; die so vorbereiteten Stücke werden in zweiteilige Formen eingebracht, aus denen die Längskanten .der Formstücke herausragen; die Kanten. werden dann unter Belass,ung der Formstücke in den Formen, vorzugsweise unter Druck, durch ein Klebmittel miteinander verbunden.The invention consists in that at least. two sector-shaped Pieces of filter material, which consists of: a coherent mass of fibers, e.g. B. paper or felt, first folded, then bent around the tip of the sector and if necessary, be dampened with a clamp attached; the so prepared pieces are placed in two-part molds, from which the longitudinal edges .the fittings protrude; the edges. are then left, ung the fittings in the molds, preferably under pressure, connected to one another by an adhesive.

Zur Erleichterung der Verklebung können die aus den Formen herausragenden Längskanten der Formstücke ausgefasert oder gestaucht werden.The protruding from the molds can be used to facilitate bonding Long edges of the fittings are frayed or compressed.

Ein aus Filterstoff bestehender Sektor i mit seinen Faltenstellen 2 ist in Abb. i der Zeichnung dargestellt. 'Nach der Biegung um die Spitze des Sektors herum entsteht ein Faltengebilde. Dieses Gebilde kann, um die Falten beständiger zu machen, während des Faltens oder nach dem Falten gedämpft «erden. Es wird dazu, wie Abb. 3 zeigt, in eine Klemme 3 :eingeklemmt. Nach dem Herausnehmen aus. der Klemme springt das eng zusammengepreßte Faltengebilde wieder auf und bildet annähernd einen Halbkreis. Danach legt man das halbkreisförmige Faltengebilde in eine Form ein, -wie sie in Abb.3 der Zeichnung im Schnitt und in Abb.4 im Grundriß dargestellt ist. Diese Form besteht aus einem halbkr eisförtnigen Unterteil 4 und einem ebensolchen Oberteil 5. Zwei -derartige Formen werden zur Herstellung eines Filters benötigt. Nach dem Einlegen ragen die Kanten 6 jedes Filterstückes i aus den Formen heraus. Beide Formen werden nun in geringem Abstand zueinander gebracht, so daß die herausragenden Kanten der Filterstücke miteinander verklebt werden können. Besonders einfach gestaltet sich das Verkleben, wenn die aus den Formen herausragenden Kanten mit einer Bürste ausgefasert oder mit einem Werkzeug gestaucht werden. So vorbereitete Stücke lassen sich sehr leicht stumpf zusammenkleben. Hierzu werden die Formen mit ihren geraden Flächen ane.inandergebracht, worauf ein Klebemittel, z. B. selbstvulkanisierende Latex. in die Fuge zwischen den beiden Formen eingebracht wird.A sector i made of filter material with its folds 2 is shown in Fig. I of the drawing. 'After the bend around the top of the sector a fold formation arises around it. This structure can make the wrinkles more permanent to make, dampened during folding or after folding. It becomes as Fig. 3 shows, in a clamp 3: clamped. After taking it out. the Clamp springs back on the tightly compressed fold structure and approximately forms a semicircle. Then you put the semicircular fold structure in a mold a, -as shown in Fig.3 of the drawing in section and in Fig.4 in plan is. This form consists of a semi-circular lower part 4 and a similar one Upper part 5. Two forms of this kind are required to make a filter. After insertion, the edges 6 of each filter piece i protrude from the molds. Both forms are now brought into close proximity to one another, so that the protruding Edges of the filter pieces can be glued together. Designed to be particularly simple sticking if the edges protruding from the molds with a brush frayed or compressed with a tool. Leave so prepared pieces stick together very easily. To do this, the shapes are straight Areas brought together, whereupon an adhesive, e.g. B. self-vulcanizing Latex. is introduced into the joint between the two forms.

Claims (1)

PATENTANSPRÜCHE: i. Verfahren zum Herstellen -eines aus sektorförmigen Formstücken gebildeten Schwebstoffilters, dessen Oberfläche derart gefaltet ist, daß die Falten gleichachsig ineinanderliegende Ringe bilden, dadurch gekennzeichnet, daß mindestens zwei sektorförmige Stücke eines Filterstoffes zunächst gefaltet, dann um die Spitze des Sektors herumgebogen und gegebenenfalls unter Befestigung durch eine Klemme gedämpft werden, worauf die so vorbereiteten Stücke in zweiteilige Formen, aus denen die Längskanten des Formstückes herausragen, eingebracht und die Kanten der Formstücke unter Belassun.g in den Formen vorzugsweise unter Druck durch ein Klebemittel miteinander verbunden werden. z. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die aus den Formen herausragenden Längskanten der Formstücke zur Erleichterung der Verklebung ausgefasert oder gestaucht werden.PATENT CLAIMS: i. Method for producing -one from sector-shaped HEPA filter formed by fittings, the surface of which is folded in such a way that the folds form coaxially nested rings, characterized in that that at least two sector-shaped pieces of a filter material are initially folded, then bent around the tip of the sector and, if necessary, under fastening are dampened by a clamp, whereupon the thus prepared pieces are divided into two parts Forms from which the longitudinal edges of the molding protrude, introduced and the Edges of the shaped pieces while leaving them in the molds, preferably under pressure an adhesive can be bonded together. z. Method according to claim i, characterized characterized in that the protruding from the shapes of the longitudinal edges of the shaped pieces be frayed or compressed to facilitate bonding.
DEA88319D 1938-10-21 1938-10-21 Process for the production of a particulate filter formed from sector-shaped molded pieces Expired DE728093C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA88319D DE728093C (en) 1938-10-21 1938-10-21 Process for the production of a particulate filter formed from sector-shaped molded pieces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA88319D DE728093C (en) 1938-10-21 1938-10-21 Process for the production of a particulate filter formed from sector-shaped molded pieces

Publications (1)

Publication Number Publication Date
DE728093C true DE728093C (en) 1942-11-19

Family

ID=6950315

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA88319D Expired DE728093C (en) 1938-10-21 1938-10-21 Process for the production of a particulate filter formed from sector-shaped molded pieces

Country Status (1)

Country Link
DE (1) DE728093C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4439321A (en) * 1981-06-23 1984-03-27 Nippondenso Co., Ltd. Filter means
US4498989A (en) * 1981-02-23 1985-02-12 Nippondenso Co., Ltd. Fluid filter element and support

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4498989A (en) * 1981-02-23 1985-02-12 Nippondenso Co., Ltd. Fluid filter element and support
US4439321A (en) * 1981-06-23 1984-03-27 Nippondenso Co., Ltd. Filter means

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