DE821843C - Process for producing an airtight connection between two foils which are at least partially made of thermoplastic plastic - Google Patents

Process for producing an airtight connection between two foils which are at least partially made of thermoplastic plastic

Info

Publication number
DE821843C
DE821843C DET3397A DET0003397A DE821843C DE 821843 C DE821843 C DE 821843C DE T3397 A DET3397 A DE T3397A DE T0003397 A DET0003397 A DE T0003397A DE 821843 C DE821843 C DE 821843C
Authority
DE
Germany
Prior art keywords
foils
thermoplastic
producing
partially made
thermoplastic plastic
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
DET3397A
Other languages
German (de)
Inventor
Dipl-Ing Robert Forberger
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.)
Telefunken AG
Original Assignee
Telefunken AG
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 Telefunken AG filed Critical Telefunken AG
Priority to DET3397A priority Critical patent/DE821843C/en
Application granted granted Critical
Publication of DE821843C publication Critical patent/DE821843C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/03After-treatments in the joint area
    • B29C66/032Mechanical after-treatments
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General 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
    • B29C66/41Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43Joining a relatively small portion of the surface of said articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint 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
    • B29C66/112Single lapped joints
    • B29C66/1122Single lap to lap joints, i.e. overlap joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING 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
    • B29K2995/00Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037Other properties
    • B29K2995/0065Permeability to gases
    • B29K2995/0067Permeability to gases non-permeable

Landscapes

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

Description

Verfahren zur Herstellung einer luftdichten Verbindung zwischen zwei Folien, die zumindest teilweise aus thermoplastischem Kunststoff bestehen Bei Verwendung von Folien aus Thermoplasten oder von Folien aus Textilien und Thermoplasten werden in vielen Fällen Nähte verlangt, die einerseits luft- und wasserdicht sind und die andererseits eine ausreichende Festigkeit besitzen, so daß die Festigkeit der hetreffenden Folie voll ausgenutzt werden kann. Als Beispiele für Gegenstände, bei denen solche Nähte benötigt werden, seien genannt: Bootshiute, große Schwimmtiere, Matratzen usw.Method of creating an airtight connection between two Films that are at least partially made of thermoplastic material Using of foils made of thermoplastics or foils made of textiles and thermoplastics in many cases requires seams that are airtight and watertight on the one hand and which on the other hand, have sufficient strength so that the strength of the relevant Foil can be fully utilized. As examples of objects where such Seams that are needed include: boat hats, large swimming animals, mattresses etc.

I,uft- und wasserdichte Nähte können, bei Folien aus Thermoplasten immer, bei Folien aus Textilien uncl Thermoplasten, wenn die entsprechenden Seiten aufeinanderkommen, durch Verschweißen hergestellt werden, sei es durch Hochfrequenzschweißen oder durch rein thermisches Schweißen. I, uft- and watertight seams can be used with foils made of thermoplastics always with foils made of textiles and thermoplastics, if the corresponding pages come together, are produced by welding, be it by high-frequency welding or by purely thermal welding.

Die Festigkeit nur geschweißter Nähte ist aber oft nicht ausreichend und läßt, besonders bei Folien, die Gewebebahnen enthalten und auch bei sehr starken Folien aus Thermoplasten eine volle Ausnutzung der Festigkeit der Folien oft nicht zu.However, the strength of only welded seams is often insufficient and leaves, especially with foils that contain webs of fabric and also with very strong ones Films made from thermoplastics often fail to make full use of the strength of the films to.

Bei einseitig heschichteten Geweben ist ein Verschweißen in der beschriebenen Art überhaupt nicht möglich, wenn nicht beschichtete Seiten miteinander verbunden werden sollen. In the case of fabrics layered on one side, welding is described in the above Kind of not possible at all if uncoated sides are joined together should be.

Die Schwierigkeiten werden behoben, wenn man beim Verbinden zweier Folien gemäß der Erfindung in der Weise vorgeht, daß zuerst eine normale Naht mittels Faden genäht wird und diese dann dicht geschweißt wird. Die Fadennaht übernimmt dabei im wesentlichen die auftretenden Beanspruchungen, während die Schweißung dafür sorgt, daß die Naht djcht wird. Das Dichtschweißen kann mit oder ohne Zugabe von Thermoplasten erfolgen, wobei die Zugabe des Thermoplasten in Folienform, in Form von Paste oder in anderer Form erfolgen kann. Der zusätzliche Thermoplast kann dabei sowohl an den Außenseiten wie im Inneren der Naht, in diesem Fall z. B. durch eine zwischengelegte Folie, zugeführt werden. The difficulties are resolved when one is connecting two Films according to the invention proceeds in such a way that first a normal seam by means of Thread is sewn and this is then tight is welded. The thread seam essentially takes over the stresses occurring during the welding ensures that the seam is djcht. The sealing welding can be done with or without an allowance of thermoplastics, with the addition of the thermoplastic in film form, in Can be made in the form of paste or in another form. The additional thermoplastic can both on the outside and inside the seam, in this case z. B. by an interposed film, are fed.

Es ist nicht unbedingt erforderlich, daß-die beiden Folienblätter miteinander verschweißt sind; es genügt auch, wenn der Zusammenhalt durch die genähte Naht allein erfolgt und die Schweißung die einzelnen Blätter gesondert dicht macht. It is not absolutely necessary that the two sheets of foil are welded together; it is also sufficient if the cohesion through the sewn Seam takes place alone and the weld makes the individual sheets sealed separately.

Ein Vorteil des Zuschweißens der Verletzungen der Folie durch die Nadel ist eineVerminderung der Empfindlichkeit gegen das Ausreißen der Stichlöcher, was besonders bei gewissen Folien, die kein Gewebe enthalten, Vorteile bringt. An advantage of welding the injuries to the film by the Needle is a decrease in sensitivity to tearing out the needle holes, which is particularly advantageous for certain foils that do not contain any fabric.

Sollen Folien, die jeweils aus einer Gewebe- und einer Thermoplastschicht bestehen, miteinander verschweißt werden, und liegen dabei die beiden Gewebeschichten aufeinander, so empfiehlt es sich, zur Erzielung einer luftdichten Naht die zu verschweißenden Ränder vor dem Schweißvorgang zunächst mit einer weiteren Thermoplastschicht zu umbörteln. Should films, each made of a fabric and a thermoplastic layer exist, are welded together, and thereby lie the two layers of fabric one on top of the other, it is recommended that the seams to be welded be welded to achieve an airtight seam Before the welding process, first close the edges with another layer of thermoplastic flank.

Claims (3)

PATENTANSPRUCHE I. Verfahren zur Herstellung einer luftdichten Verbindung zwischen zwei Folien, die zumindest teilweise aus thermoplastischem Kunststoff bestehen, dadurch gekennzeichnet, daß zunächst eine normale Naht mittels Faden hergestellt und anschließend diese Naht, gegebenenfalls unter Zusatz eines weiteren thermoplastischen Kunststoffes in beispielsweise Folien-, Pulver- oder Pastenform, durch Schweißung luftdicht gemacht wird. PATENT CLAIMS I. Method of making an airtight joint between two foils that are at least partially made of thermoplastic material, characterized in that a normal seam is first made by means of thread and then this seam, optionally with the addition of another thermoplastic Plastic in, for example, film, powder or paste form, by welding is made airtight. 2. Verfahren nach Anspruch I, dadurch gekennzeichnet, daß die Folien aus einem gewebeartigen Kunststoff bestehen, auf den ein-oder beidseitig thermoplastische Schichten aufgebracht sind. 2. The method according to claim I, characterized in that the films consist of a fabric-like plastic, on one or both sides thermoplastic Layers are applied. 3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß bei Folien, deren Gewebeschichten aufeinanderliegen, zunächst eine Umbörtelung der zu verschweißenden Ränder mit einer thermoplastischen Folie erfolgt, und daß dann diese Umbörtelung mit den Folien verschweißt wird. 3. The method according to claim 2, characterized in that in foils, whose fabric layers lie on top of one another, first of all a flanging of the one to be welded Edges are made with a thermoplastic film, and then this Umbörtelung is welded to the foils.
DET3397A 1950-10-13 1950-10-13 Process for producing an airtight connection between two foils which are at least partially made of thermoplastic plastic Expired DE821843C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET3397A DE821843C (en) 1950-10-13 1950-10-13 Process for producing an airtight connection between two foils which are at least partially made of thermoplastic plastic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET3397A DE821843C (en) 1950-10-13 1950-10-13 Process for producing an airtight connection between two foils which are at least partially made of thermoplastic plastic

Publications (1)

Publication Number Publication Date
DE821843C true DE821843C (en) 1951-11-22

Family

ID=7544238

Family Applications (1)

Application Number Title Priority Date Filing Date
DET3397A Expired DE821843C (en) 1950-10-13 1950-10-13 Process for producing an airtight connection between two foils which are at least partially made of thermoplastic plastic

Country Status (1)

Country Link
DE (1) DE821843C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1273241B (en) * 1963-10-11 1968-07-18 Opti Werk G M B H & Co Method for attaching rows of links to the straps of zippers
DE1289346B (en) * 1966-10-15 1969-02-13 Opti Werk Gmbh & Co Zipper
DE3838145C1 (en) * 1988-11-10 1990-04-26 Pfaff Industriemaschinen Gmbh, 6750 Kaiserslautern, De

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1273241B (en) * 1963-10-11 1968-07-18 Opti Werk G M B H & Co Method for attaching rows of links to the straps of zippers
DE1289346B (en) * 1966-10-15 1969-02-13 Opti Werk Gmbh & Co Zipper
DE3838145C1 (en) * 1988-11-10 1990-04-26 Pfaff Industriemaschinen Gmbh, 6750 Kaiserslautern, De

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