DE1779261B2 - PROCEDURE FOR SEALING HOSE SECTIONS - Google Patents

PROCEDURE FOR SEALING HOSE SECTIONS

Info

Publication number
DE1779261B2
DE1779261B2 DE19681779261 DE1779261A DE1779261B2 DE 1779261 B2 DE1779261 B2 DE 1779261B2 DE 19681779261 DE19681779261 DE 19681779261 DE 1779261 A DE1779261 A DE 1779261A DE 1779261 B2 DE1779261 B2 DE 1779261B2
Authority
DE
Germany
Prior art keywords
melt
hose
tube
clamped
procedure
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.)
Granted
Application number
DE19681779261
Other languages
German (de)
Other versions
DE1779261A1 (en
Inventor
Wilfried 7840 Müllheim Leitz
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.)
Van Leer Verpackungen GmbH
Original Assignee
Van Leer Verpackungen 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 Van Leer Verpackungen GmbH filed Critical Van Leer Verpackungen GmbH
Priority to DE19681779261 priority Critical patent/DE1779261B2/en
Publication of DE1779261A1 publication Critical patent/DE1779261A1/en
Publication of DE1779261B2 publication Critical patent/DE1779261B2/en
Granted 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/70—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by moulding
    • 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
    • B29C65/40—Applying molten plastics, e.g. hot melt
    • B29C65/42—Applying molten plastics, e.g. hot melt 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
    • B29C66/01—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
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • 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
    • B29C66/40—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
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
    • 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
    • B29C66/723—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 being multi-layered
    • 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
    • B29L2023/00—Tubular articles
    • B29L2023/20—Flexible squeeze tubes, e.g. for cosmetics

Landscapes

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

Description

Die Erfindung betrifft ein Verfahren zum Verschließen von Schlauchabschnitten aus thermoplastischem Werkstoff, insbesondere von Tubenboden, bei dem das Schlauchende eingeklemmt und querverschweißt wird.The invention relates to a method for closing thermoplastic hose sections Material, especially of the tube base, in which the hose end is clamped and cross-welded.

Es sind verschiedene Schweißverfahren für Schlauchenden bekannt, bei denen die Abklemmbacken als durch Widerstandsheizung beheizte Schweißbacken oder als Amboß und Sonotrode einer Ultraschall Schweißvorrichtung ausgebildet sind. Dabei wird jedoch die Wärme von außen zugeführt, d. h. die Außenseite des Schlauches wird stets höher erhitzt als die zu verschweißende Innenseite.There are various known welding methods for hose ends in which the clamping jaws as through Resistance heating heated welding jaws or as an anvil and sonotrode of an ultrasonic welding device are trained. In this case, however, the heat is supplied from the outside, i. H. the outside of the hose is always heated higher than the inside to be welded.

Weiterhin wird durch das Abklemmen und anschließende Zusammenschweißen die eigentliche Schweißstelle verjüngt, wodurch die Festigkeit der Schweißstelle wesentlich beeinträchtigt wird. Diesen Nachteil weist auch das HF-Schweißverfahren auf, bei dem die Elektroden als Klemmbacken ausgebildet sind.Furthermore, the actual welding point is created by the clamping and subsequent welding tapers, which significantly affects the strength of the weld. Has this disadvantage also the HF welding process, in which the Electrodes are designed as clamping jaws.

Aus der US-PS 26 91 474 ist ein Verfahren bekannt, bei dem das Schlauchende durch Klemmbacken abgeklemmt und ein als Widerstandsspule ausgebildetes Heizelement dicht, aber mit einem vorbestimmten Abstand, an die zu schweißende Stelle herangeführt wird. Dieses Verfahren weist den Nachteil auf. daß auch hier die Schweißstelle verjüngt wird. Außerdem wird durch die seitliche Anordnung der Heizspule die Innenseite der Schweißstelle ungleichmäßig erwärmt, so daß die Festigkeit der Schweißstelle ebenfalls beeinträchtigt wird.From US-PS 26 91 474 a method is known in which the hose end by clamping jaws disconnected and a heating element designed as a resistance coil tight, but with a predetermined Distance to the point to be welded. This method has the disadvantage. that too here the weld is tapered. In addition, due to the side arrangement of the heating coil, the Inside of the weld is heated unevenly, so that the strength of the weld is also impaired will.

Demgegenüber hat die Erfindung die Aufgabe, ein Verfahren zur Durchführung einer besonders sicheren und festen Verschweißung von Schlauchenden zu schaffen.In contrast, the invention has the object of providing a method for performing a particularly safe and to create permanent welding of hose ends.

Dies wird erfindungsgemäß dadurch erreicht, daß dasThis is achieved according to the invention in that the

ίο Schlauchende an zwei Stellen, die einen Abstand voneinander aufweisen, quer zur Längsachse abgeklemmt wird und der zwischen diesen Abklemmstcllen gebildete Hohlraum innerhalb des Schlauchendes mit thermoplastischer Schmelze unter Druck ausgefüllt wird.ίο Hose end in two places that are a distance have from each other, is clamped transversely to the longitudinal axis and the between these Abklemmstcllen cavity formed inside the hose end filled with thermoplastic melt under pressure will.

Dies hat den Vorteil, daß die Kunststoffschmelze zwischen den beiden Abklemmstellen unmittelbar auf die zu verschweißende Innenseite des Schlauches wirkt, während die Außenfläche kalt bleibt. Dadurch wird eine feste und gleichmäßige Verschweißung erzielt. Weiterhin wird die Kunststoffmenge an der Schweißstelle nicht, wie bei den bekannten Verfahren, verringert, sondern erhöht, was für die Festigkeit der Verbindung von großer Bedeutung ist.This has the advantage that the plastic melt occurs directly between the two pinch-off points the inside of the hose to be welded acts, while the outside surface remains cold. This creates a Fixed and even weld achieved. Furthermore, the amount of plastic at the weld not reduced, as in the known method, but increased, which affects the strength of the connection is of great importance.

Das erfindungsgemäße Verfahren wird anhand der Zeichnung näher beschrieben.The method according to the invention is described in more detail with reference to the drawing.

A b b. Ia zeigt in der Sicht auf die flachlicgende Folie. wie an zwei Stellen der Folienschlauch quer über den Schlauch flach abgequetscht wird. Diese zwei Zonen sind in der A b b. I von der Seite aus gesehen, und zwar mit »a« und »b« bezeichnet. Der Abstand, der die Zonen »a« und »b« voneinander trennt, ist als Größe »x« dargestellt und ermöglicht einen Hohlraum »h«. Dieser Hohlraum kann nun mit plastischer Schmelze ausgefüllt werden, wie dies in A bb. Il und Ha veranschaulicht ist.A b b. Ia shows in the view of the flat film. how the film tube is squeezed flat across the tube in two places. These two zones are in the A b b. I seen from the side, labeled "a" and "b". The distance that separates the zones "a" and "b" from each other is shown as size "x" and enables a cavity "h". This cavity can now be filled with plastic melt, as shown in A bb. Il and Ha is illustrated.

Abb. IH zeigt, wie die Schmelze vorteilhafterweise über eine kleine Bohrung in die Abklemmbacken »b« einfließt.Fig. IH shows how the melt advantageously flows into the clamping jaws "b" via a small hole.

Hierzu ist es notwendig, daß die Backe »b« entsprechende Einkerbungen »(/<-< erhält.For this it is necessary that the jaw »b« has corresponding notches »(/ <- <.

Gemäß Abb. IV kann das Verfahren auch so vorgenommen werden, daß zunächst nur die Abklemmbacke »a« auf den Schlauch gepreßt wird, dann das oTenc Ende mit flüssiger Schmelze »f« ausgefüllt und hiernach die Backe »b« gemäß A b b.V im Abstand »x« das Endstück der Tube abklemmt. Hierauf können zwei Stempel »g« entsprechend dem Abstand »x« zwischen »a« und »b« den notwendigen Druck und die notwendige Abkühlung auf die kissenförmig cingeschlossene Schmelze ausüben.According to Fig. IV, the process can also be carried out in such a way that initially only the clamping jaw "a" is pressed onto the hose, then the oTenc end is filled with liquid melt "f" and then the jaw "b" is spaced apart according to A b bV "X" clamps off the end piece of the tube. Thereupon two punches “g” can exert the necessary pressure and the necessary cooling on the cushion-shaped c-enclosed melt corresponding to the distance “x” between “a” and “b”.

Dem Wesen der Erfindung nach kann das Verfuhren bei allen thermoplastischen Materialien angewendet werden, insbesondere auch bei Schläuchen, bei denen die innerste Schicht ein Kunststoff-Laminat darstellt.According to the essence of the invention, the method can be applied to all thermoplastic materials especially with hoses in which the innermost layer is a plastic laminate.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (3)

Patentansprüche:Patent claims: 1. Verfahren zum Verschließen von Schlauchabschnitten aus thermoplastischem Werkstoff, insbesondere von Tubenboden, bei dem das Schlauchende eingeklemmt und querverschweißt wird, dadurch gekennzeichnet, daß das Schlauchende an zwei Stellen, die einen Abstand voneinander aufweisen quer zur Längsachse abgeklemmt wird und der zwischen diesen Abklemmstellen gebildete Hohlraum innerhalb des Schlauchendes mit thermoplastischer Schmelze unter Druck ausgefüllt wird.1. A method for closing tube sections made of thermoplastic material, in particular from the bottom of the tube, in which the end of the tube is clamped and cross-welded, thereby characterized in that the hose end in two places which are a distance from each other have is clamped transversely to the longitudinal axis and formed between these clamping points The cavity inside the hose end is filled with thermoplastic melt under pressure. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß zunächst nur die zum Schlauchinneren liegende Abklemmstelle abgeklemmt und in das offene Ende Schmelze eingebracht, anschließend die auöertliegende Abklemmstelle abgeklemmt sowie der mit Schmelze gefüllte Schlauchteil zwischen den Klemmstellen von außen druckbelastet wird.2. The method according to claim 1, characterized in that initially only the hose interior clamped off the lying pinch point and introduced into the open end of the melt, then the external pinch point pinched off and the tube part filled with melt is subjected to pressure from the outside between the clamping points. 3. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß die dem Schlauchende zugewandte Abklemmbacke mit mindestens einer Nut zum Einspritzen der Schmelze versehen ist.3. Apparatus for performing the method according to claim 1, characterized in that the the clamping jaw facing the hose end with at least one groove for injecting the melt is provided.
DE19681779261 1968-07-24 1968-07-24 PROCEDURE FOR SEALING HOSE SECTIONS Granted DE1779261B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19681779261 DE1779261B2 (en) 1968-07-24 1968-07-24 PROCEDURE FOR SEALING HOSE SECTIONS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681779261 DE1779261B2 (en) 1968-07-24 1968-07-24 PROCEDURE FOR SEALING HOSE SECTIONS

Publications (2)

Publication Number Publication Date
DE1779261A1 DE1779261A1 (en) 1971-09-09
DE1779261B2 true DE1779261B2 (en) 1976-09-02

Family

ID=5703810

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19681779261 Granted DE1779261B2 (en) 1968-07-24 1968-07-24 PROCEDURE FOR SEALING HOSE SECTIONS

Country Status (1)

Country Link
DE (1) DE1779261B2 (en)

Also Published As

Publication number Publication date
DE1779261A1 (en) 1971-09-09

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
EHJ Ceased/non-payment of the annual fee