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DE1048484B - - Google Patents

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Publication number
DE1048484B
DE1048484B DENDAT1048484D DE1048484DA DE1048484B DE 1048484 B DE1048484 B DE 1048484B DE NDAT1048484 D DENDAT1048484 D DE NDAT1048484D DE 1048484D A DE1048484D A DE 1048484DA DE 1048484 B DE1048484 B DE 1048484B
Authority
DE
Germany
Prior art keywords
edges
rubber
vulcanized
joining
gas
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.)
Pending
Application number
DENDAT1048484D
Other languages
German (de)
Publication date
Publication of DE1048484B publication Critical patent/DE1048484B/de
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt joints
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/02—Masks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5042—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like covering both elements to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/22—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns
    • B29C66/227—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns being in the form of repetitive interlocking undercuts, e.g. in the form of puzzle cuts
    • B29C66/2272—Teardrop-like, waterdrop-like or mushroom-like interlocking undercuts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/22—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns
    • B29C66/227—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns being in the form of repetitive interlocking undercuts, e.g. in the form of puzzle cuts
    • B29C66/2274—Dovetailed interlocking undercuts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/22—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns
    • B29C66/227—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns being in the form of repetitive interlocking undercuts, e.g. in the form of puzzle cuts
    • B29C66/2276—Other specific local geometries of interlocking undercuts not provided for in B29C66/2272 - B29C66/2274
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • B29C65/4835—Heat curing adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
    • B29C65/54—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive between pre-assembled parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/729—Textile or other fibrous material made from plastics
    • B29C66/7292—Textile or other fibrous material made from plastics coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2313/00—Use of textile products or fabrics as reinforcement
    • B29K2313/02—Use of textile products or fabrics as reinforcement coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0065—Permeability to gases
    • B29K2995/0067—Permeability to gases non-permeable
    • 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

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Zoology (AREA)
  • Pulmonology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

Anmelder:Applicant:

Auergesellschaft Aktiengesellschaft,
Berlin N 65, Friedrich-Krause-Ufer 24Auergesellschaft Aktiengesellschaft,
Berlin N 65, Friedrich-Krause-Ufer 24

Günther Dannehl, Berlin, ist als Erfinder genannt wordenGünther Dannehl, Berlin, has been named as the inventor

sie abdeckenden Kautschukstreifen aufgeklebt werden. Dann wird der zweite Kautschukstreifen auf der gegenüberliegenden Seite aufgelegt, und schließlich werden in einer beheizten Preßform die Streifen vulkanisiert, wobei der Kautschuk in die Stoßfuge eindringt. Zum paßgerechten Ineinanderfügen der Ränder ist es vorteilhaft, diese mit bestimmten Merkzeichen zu versehen oder stellenweise eine andere Ausbildung der Verzahnung zu wählen.rubber strips covering them are glued on. Then the second rubber strip is on the placed on the opposite side, and finally the strips are vulcanized in a heated press mold, whereby the rubber penetrates into the butt joint. For fitting the edges together it is advantageous to provide these with certain marks or in some places a different one To choose training of the gearing.

In der Zeichnung sind mehrere Ausfiihrungsarteii der Erfindung dargestellt. Die Abb. 1 bis 3 zeigen in Ansicht die Randteile 1 und 2 eines zur Maskenkörperherstellung verwendeten Formstückes. Die Stoßränder sind mit Verzahnungen versehen, die in Abb. 1 als Mäanderlinie, in Abb. 2 mit schlingenförmigen Flanken und in Abb. 3 mit keilförmigen Flanken ausgebildet sind. Die gasdichte Verbindung der Teile durch aufvulkanisierte Streifen 3 und 4 wird durch die Schnittzeichnung der Abb. 4 veranschaulicht. Abb. 5 zeigt eine Ausführung, bei der an dem Ende der Verzahnung ein Merkzeichen 5 in Nut-Keil-Form angeordnet ist.Several embodiments of the invention are shown in the drawing. Figs. 1 to 3 show a view of the edge parts 1 and 2 of a molded piece used for the manufacture of the mask body. The abutting edges are provided with serrations, which in Fig. 1 are designed as a meander line, in Fig. 2 with loop-shaped flanks and in Fig. 3 with wedge-shaped flanks. The gas-tight connection of the parts by vulcanized strips 3 and 4 is illustrated by the sectional drawing in FIG. Fig. 5 shows an embodiment in which a marker 5 is arranged in the form of a groove and wedge at the end of the toothing.

P A T E N T Λ N S P R 0 C H E : P ATENT Λ NSPR 0 CHE:

1. Ebene Formstücke aus einer Gummiplatte und gummiüberzogenen Stoffen od. dgl. zum Herstellen einer Atemschutzmaske, deren Stoßränder zusammengefügt und nachträglich vulkanisiert werden, dadurch gekennzeichnet, daß die Stoßränder eine Verzahnung haben, die so ausgebildet ist, daß nach dem Zusammenfügen der Stoßränder vor dem Vulkanisieren ihre Verbindung nicht mehr gelöst werden kann.1. Level moldings made of a rubber sheet and rubber-coated fabrics or the like to manufacture a respirator, the edges of which are joined together and subsequently vulcanized are characterized in that the joint edges have a toothing which is designed so that after joining the abutting edges before vulcanizing their connection no longer can be solved.

2. Formstücke nach Anspruch 1, dadurch gekennzeichnet, daß die Verzahnung hakenförmig, schlingenförmig oder keilförmig ausgebildet ist.2. fittings according to claim 1, characterized in that the toothing is hook-shaped, is loop-shaped or wedge-shaped.

3. Formstücke nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Stoßränder der Formstücke zur paßgerechten Ineinanderfügung Merkzeichen (5) oder eine stellenweise andere Ausbildung der Verzahnung aufweisen.3. Shaped pieces according to claim 1 or 2, characterized in that the abutting edges of the shaped pieces have markings (5) or a different design of the toothing in places for snug fitting.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (1)

Die Erfindung betrifft ebene Formstücke aus einer Gummiplatte und gummiüberzogenen Stoffen od. dgl. zum Herstellen einer Atemschutzmaske, deren Stoßränder zusammengefügt und nachträglich vulkanisiert werden.The invention relates to flat shaped pieces made of a rubber sheet and rubber-coated materials or the like. for the manufacture of a respirator, the edges of which are joined together and subsequently vulcanized will. Um aus ebenen Formstücken Gebilde zu formen, die sich der Gesichtsform anpassen, ist es notwendig, einzelne Ränder oder Randteile der Formstücke miteinander gasdicht und mit ausreichender Festigkeit zu verbinden. Nach einem bekannten Verfahren geht man dabei so vor, daß die gegenüberliegenden Ränder, die die Stoßstellen bilden, mit einer Zickzacknaht verbunden werden. Dann legt man beiderseitig Streifen aus Kautschuk auf und vulkanisiert diese unter der Einwirkung von Druck und Hitze mittels geeigneter Vorrichtungen. Der zuerst erweichende Kautschuk dringt dabei in den Spalt der Stoßstellen und haftet zugleich an beiden Flächen, so daß eine gasdichte Verbindung der Ränder zustande kommt.In order to create shapes from flat shaped pieces that adapt to the shape of the face, it is necessary to individual edges or edge parts of the fittings with each other gas-tight and with sufficient strength connect to. According to a known method, one proceeds in such a way that the opposite edges, which form the joints, are connected with a zigzag seam. Then you put strips on both sides made of rubber and vulcanized it under the action of pressure and heat using suitable Devices. The rubber that softens first penetrates the gap between the joints and sticks at the same time on both surfaces, so that a gas-tight connection of the edges is achieved. Die Erfindung bezweckt eine Vereinfachung und Verbilligung der Herstellung solcher Masken. Sie besteht darin, daß die zusammenzufügenden Stoßränder der Formstücke eine Verzahnung haben, die so ausgebildet ist, daß nach dem Zusammenfügen der Stoßränder vor dem Vulkanisieren ihre Verbindung nicht mehr gelöst werden kann. Die Verzahnung kann verschiedene Form haben, z. B. kann man sie haken-, schlingen- oder keilförmig ausbilden. Durch die Ausbildung der Stoßränder gemäß der Erfindung haben die Formstücke, wenn man die Verzahnungen ineinanderfügt, bereits einen Zusammenhalt, der noch dadurch verbessert wird, daß die Ränder in einer Presse durch beiderseitig auf vulkanisierte Streifen gasdicht verbunden werden, also nach dem Zusammenfügen zwischen zwei Flächen liegen. Die Verzahnung kann bereits beim Ausstanzen des Formstückes aus der Bahn des Baustoffes hergestellt werden. Das Zusammenfügen der Stoßränder wird vorteilhaft so bewerkstelligt, The invention aims to simplify and make the production of such masks cheaper. she consists in that the joint edges of the shaped pieces to be joined have a toothing that is so formed is that after joining the abutting edges before vulcanizing their connection is not more can be solved. The toothing can have different shapes, e.g. B. you can hook it-, Form a loop or wedge shape. By designing the abutting edges according to the invention the fittings, if you put the teeth into each other, already a cohesion that still creates it is improved that the edges are gas-tight in a press by vulcanized strips on both sides be connected, so lie between two surfaces after joining. The gearing can can already be made when punching out the shaped piece from the web of the building material. The joining the edge of the joint is advantageously achieved in such a way that daß sie gleichzeitig auf den einen der beiden Ebene Formstücke aus einer Gummiplatte und gummiüberzogenen Stoffen od. dgl.
zum Herstellen einer Atemschutzmaskethat they at the same time on one of the two levels molded pieces made of a rubber sheet and rubber-coated fabrics od. Like.
for making a respirator
DENDAT1048484D Pending DE1048484B (en)

Publications (1)

Publication Number Publication Date
DE1048484B true DE1048484B (en) 1959-01-08

Family

ID=589663

Family Applications (1)

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DENDAT1048484D Pending DE1048484B (en)

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Country Link
DE (1) DE1048484B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2861012A1 (en) * 2003-10-17 2005-04-22 Plastic Omnium Cie METHOD OF ASSEMBLING TWO STRIPES OF PLASTIC MATERIAL.
EP2561975A1 (en) * 2011-08-25 2013-02-27 ContiTech Elastomer-Beschichtungen GmbH Elastomer goods comprised of several elastomer webs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2861012A1 (en) * 2003-10-17 2005-04-22 Plastic Omnium Cie METHOD OF ASSEMBLING TWO STRIPES OF PLASTIC MATERIAL.
EP2561975A1 (en) * 2011-08-25 2013-02-27 ContiTech Elastomer-Beschichtungen GmbH Elastomer goods comprised of several elastomer webs

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