DE661740C - Method for producing a sealing frame for gas protective masks - Google Patents

Method for producing a sealing frame for gas protective masks

Info

Publication number
DE661740C
DE661740C DED67413D DED0067413D DE661740C DE 661740 C DE661740 C DE 661740C DE D67413 D DED67413 D DE D67413D DE D0067413 D DED0067413 D DE D0067413D DE 661740 C DE661740 C DE 661740C
Authority
DE
Germany
Prior art keywords
sealing frame
producing
gas protective
protective masks
vulcanized
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
DED67413D
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.)
Draegerwerk AG and Co KGaA
Original Assignee
Draegerwerk AG and Co KGaA
Publication date
Priority to DED67413D priority Critical patent/DE661740C/en
Application granted granted Critical
Publication of DE661740C publication Critical patent/DE661740C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/0064—Producing wearing apparel
    • B29D99/0071—Masks, e.g. gas masks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/48—Wearing apparel
    • B29L2031/4807—Headwear
    • B29L2031/4835—Masks

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

Verfahren zum Herstellen eines Dichtrahmens für Gasschutzmasken Die Erfindung betrifft ein Verfahren zum Herstellen eines Dichtrahmens für Gasschutzmasken und besteht darin, daß das bekannte zweistufige Verfahren, bei dem ein vorvulkanisierter Kautschukrohling nachträglich verformt und ausvulkanisiert wird, in der Weise abgeändert auf die Herstellung von Dichtrahmen für Gasschutzmasken angewendet wird, daß eine vorvulkanisierte Kautschukplatte oder ein auf beiden Seiten mit vorvulkanisiertem Kautschuk belegter Textilstoffzuschnitt in einer Vorform kalt vorgepreßt und dann in der geheizten Hauptform ausvulkanisiert wird.Method for producing a sealing frame for gas protective masks The invention relates to a method for producing a sealing frame for gas protective masks and is that the known two-step process, in which a pre-vulcanized Rubber blank is subsequently deformed and fully vulcanized, modified in that way is applied to the production of sealing frames for gas masks that a pre-vulcanized rubber sheet or one on both sides with pre-vulcanized Rubber-covered textile fabric blank, cold pre-pressed in a preform and then is fully vulcanized in the heated main mold.

Die Kautschukplatten können vor oder nach dem Formen und Endvulkanisieren dem herzustellenden Dichtrahmen entsprechend zugeschnitten werden. Durch die Verwendung von zwei Formen wird eine faltenlose Gestalt des Dichtrahmens erreicht, da nach dem Vorformen der stark verformten Kautschukplatte die überschüssigen, mit Falten versehenen Ränder der Kautschukplatte abgeschnitten werden können. Hierdurch wird es möglich, die Ausvulkanisierung in der Haupt- oder Fertigform faltenlos vorzunehmen. Je nach dem Grade der Vorvulkanisation ist die dauernde Verformung beim Endvulkanisieren größer oder geringer, so daß mit derselben Form verschiedene Gestalten der Dichtrahm=en erzielt werden und diese Dichtrahmen für verschiedene Kopfgrößen verwendet werden können. Durch das Verfahren gemäß der Erfindung ist es also möglich, auf einfache und billige Weise einen Dichtrahmen nahtlos aus Kautschuk herzustellen, der sich allen Gesichtsformen leicht anpassen läßt und in jedem Falle einen dichten Sitz der Gasschutzmaske gewährleistet.The rubber sheets can be before or after molding and end vulcanization be cut to the sealing frame to be produced accordingly. By using a wrinkle-free shape of the sealing frame is achieved by two forms, since after the preforming of the badly deformed rubber sheet the excess, with wrinkles provided edges of the rubber sheet can be cut off. This will it is possible to carry out the vulcanization in the main or finished form without wrinkles. Depending on the degree of pre-vulcanization, the permanent deformation is during final vulcanization larger or smaller, so that different shapes of the sealing frame = s with the same shape can be achieved and these sealing frames are used for different head sizes can. By the method according to the invention, it is therefore possible in a simple manner and cheap way to make a sealing frame seamlessly from rubber, which Can be easily adapted to all face shapes and in any case a tight fit the gas mask guaranteed.

Auf der Zeichnung zeigt Abb. I eine mit dem Dichtrahmen versehene Gasschutzmaske, Abb. z den Dichtrahmen selbst.On the drawing, Fig. I shows one provided with the sealing frame Gas protective mask, Fig. Z the sealing frame itself.

a ist der Maskenstoff, der bei b mit dem Dichtrahmen c vernäht oder sonstwie verbunden ist. a is the masking material that is sewn or otherwise connected to the sealing frame c at b.

Claims (1)

PATEN TANSPRUCIi Verfahren zum Herstellen eines Dichtrahmens für Gasschutzmasken, dadurch gekennzeichnet, daß eine vorvulkanisierte Kautschukplatte oder ein auf beiden Seiten mit vorvulkanisiertem Kautschuk belegter Textilstoffzuschnitt in einer Hilfsform kalt vorgepreßt und danach in der Hauptform ausvulkanisiert wird.PATEN TANSPRUCIi method for producing a sealing frame for gas protective masks, characterized in that a pre-vulcanized rubber sheet or one on both Sides with pre-vulcanized rubber covered textile fabric blank in an auxiliary form cold pre-pressed and then vulcanized in the main mold.
DED67413D Method for producing a sealing frame for gas protective masks Expired DE661740C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED67413D DE661740C (en) Method for producing a sealing frame for gas protective masks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED67413D DE661740C (en) Method for producing a sealing frame for gas protective masks

Publications (1)

Publication Number Publication Date
DE661740C true DE661740C (en) 1938-06-25

Family

ID=7059712

Family Applications (1)

Application Number Title Priority Date Filing Date
DED67413D Expired DE661740C (en) Method for producing a sealing frame for gas protective masks

Country Status (1)

Country Link
DE (1) DE661740C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4966140A (en) * 1988-07-27 1990-10-30 Renate Dunsch-Herzberg Protective facial mask

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4966140A (en) * 1988-07-27 1990-10-30 Renate Dunsch-Herzberg Protective facial mask

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