DE1157995B - Process for the production of containers, packaging and Like. Made of thermoplastic material and tools to carry out the process - Google Patents

Process for the production of containers, packaging and Like. Made of thermoplastic material and tools to carry out the process

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Publication number
DE1157995B
DE1157995B DEF29791A DEF0029791A DE1157995B DE 1157995 B DE1157995 B DE 1157995B DE F29791 A DEF29791 A DE F29791A DE F0029791 A DEF0029791 A DE F0029791A DE 1157995 B DE1157995 B DE 1157995B
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DE
Germany
Prior art keywords
projections
welding
welding tool
liquid
zones
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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
DEF29791A
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German (de)
Inventor
Valer Flax
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Individual
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Individual
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Publication of DE1157995B publication Critical patent/DE1157995B/en
Pending legal-status Critical Current

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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
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • 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
    • 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
    • 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
    • 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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • B29C66/81435—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned comprising several parallel ridges, e.g. for crimping
    • 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
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81461—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps being multi-lamellar or segmented, i.e. comprising a plurality of strips, plates or stacked elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • B65B51/303—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes reciprocating along only 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
    • 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
    • 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
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7128—Bags, sacks, sachets

Description

Verfahren zur Herstellung von Behältern, Verpackungen u. dgl. aus thermoplastischem Kunststoff und Werkzeug zur Durchführung des Verfahrens Die Erfindung betrifft ein Verfahren zur Herstellung von Behältern, Verpackungen u. dgl. aus thermoplastischem Kunststoff, wobei eine mit einer Flüssigkeit gefüllte, aus thermoplastischem Kunststoff gefertigte dünnwandige rohr- bzw. schlauchförmige Hülle durch quergeführte, unter Druck und Hitze einwirkung erzeugte Schweißnähte in einzelne, jeweils eine bestimmte Flüssigkeitsmenge enthaltende Kammern unterteilt wird. Process for the production of containers, packaging and the like thermoplastic plastic and tool for carrying out the method The invention relates to a method for manufacturing containers, packaging and the like from thermoplastic Plastic, one filled with a liquid, made of thermoplastic plastic manufactured thin-walled tubular or hose-shaped shell through transversely guided, under Pressure and heat generated weld seams in individual, each one specific Amount of liquid containing chambers is divided.

Es ist bekannt, einen Kunststoffschlauch, der mit der zu verpackenden Flüssigkeit gefüllt ist, in entsprechenden Abständen durch Trennschweißungen in Behälterabschnitte zu unterteilen. Vorteilhaft wird hierfür ein möglichst dünnwandiger Kunststoffschlauch verwendet, um an Schlauchmaterial für die einzelnen Behälter zu sparen. Die Trennschweißungen werden meist durch mit Hochfrequenzstrom gespeiste Elektrodenpaare ausgeführt. Es hat sich gezeigt, daß der Schweißdruck bei sonst gleichen Bedingungen größer sein muß, wenn die beiden zu verschweißenden Teile sehr dünn sind. Die Ursache dieses Phänomens liegt wahrscheinlich in der zur Zeit der Schweißung auftretenden Bewegung der Moleküle in dem starken elektrischen Feld hoher Frequenz. Folglich würde eine Vorrichtung, die zum Verschweißen einer Hülle oder eines Schlauches mit Wänden einer bestimmten Dicke bestimmt ist, nicht leistungsfähig genug sein, um eine Hülle mit dünneren Wänden zu verschweißen. Außerdem besteht bisher bei der Verwendung sehr dünnwandiger Schläuche die Gefahr, daß infolge des beim Abteilen der Flüssigkeit auftretenden Druckes die Schweißnaht platzt und die Flüssigkeit ausströmt. It is known a plastic tube that is to be packaged with the Liquid is filled, at appropriate intervals by separating welds in To subdivide container sections. For this purpose, it is advantageous to have a wall that is as thin as possible Plastic tubing used to attach tubing to each container to save. The separating welds are mostly fed with high-frequency electricity Electrode pairs executed. It has been shown that the welding pressure at otherwise equal conditions must be greater if the two parts to be welded very are thin. The cause of this phenomenon is likely to be found at the time of Welding occurring movement of the molecules in the strong electric field higher Frequency. Consequently, a device that would be used for welding a sheath or a hose with walls of a certain thickness is not efficient be enough to weld a shell to thinner walls. In addition, there is so far when using very thin-walled hoses the risk that as a result of when separating the liquid occurring pressure the weld bursts and the Liquid flows out.

Aufgabe der Erfindung ist es, ein Verfahren zu schaffen, nach dem Schläuche aus thermoplastischem Kunststoff in einzelne Kammern aufgeteilt werden können, ohne daß beim Abteilen der Kammern ein Platzen der Schweißnaht zu befürchten ist, auch wenn durch die bei der Extrusion von Kunststoffschläuchen unvermeidbare Ungenauigkeit der zu verarbeitende Schlauch ungleichmäßige Wandstärken aufweist. Zudem soll die Erfindung dazu dienen, viel dünnwandigere Schläuche zu verschweißen, als das bisher möglich war. The object of the invention is to provide a method according to which Tubing made of thermoplastic material can be divided into individual chambers can without fear of bursting of the weld seam when dividing the chambers is, even if unavoidable during the extrusion of plastic tubing Inaccuracy the hose to be processed has uneven wall thicknesses. In addition, the invention should serve to weld much thinner-walled hoses, than was previously possible.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß bei der Schweißung jeder Querschweißnaht zunächst derart im Querabstand voneinander angeordnete, enge Flüssigkeitsdurchtrittsöffnungen frei lassende Zonen der aneinanderliegenden Wandungsteile verschweißt werden, daß bei Fortsetzung des Schweißvorganges das in den Schweißzonen erweichte Material der Hülle in die zwischen den Zonen zunächst frei gebliebenen Flüssigkeitsdurchtrittsöffnungen fließt und diese verstopft. According to the invention, this object is achieved in that during the welding each transverse weld seam initially arranged at a transverse distance from one another in this way, narrow Zones of the adjacent wall parts that leave free liquid passage openings be welded that in the welding zones when the welding process is continued softened material of the envelope in the between the Zones initially remained free Liquid through-openings flows and clogs them.

Die Druck- und Hitzezonen für die Trernschweißung können alle gleichzeitig oder nacheinander zur Wirkung gelangen. The pressure and heat zones for the core welding can all be at the same time or take effect one after the other.

Das Schweißwerkzeug zur Ausführung dieses Verfahrens, das in Abständen nebeneinanderliegende Vorsprünge besitzt, ist nach einem vorteilhaften Kennzeichen der Erfindung derart ausgerüstet, daß die Vorsprünge in der Längsrichtung der zu bearbeitenden Hülle verlaufen. The welding tool used to perform this procedure, which is at intervals Has adjacent projections is according to an advantageous characteristic of the invention equipped in such a way that the projections in the longitudinal direction of the to processing shell run.

Nach einer vorzugsweisen Ausführungsform der Erfindung besitzt das Werkzeug über die ganze Breite parallel zu den Mantellinien der Hülle verlaufende Vorsprünge und Rillen. Nach einer anderen Ausführungsform besitzt das Werkzeug im Abstand voneinander befindliche, eckige oder abgerundete Vorsprünge, die elektrisch miteinander verbunden sind. According to a preferred embodiment of the invention, the Tool running parallel to the envelope lines of the casing over the entire width Protrusions and grooves. According to another embodiment, the tool has im Spaced, angular or rounded projections that electrically are connected to each other.

Die beiden Elektroden können gleich oder verschieden sein, und gemäß einer vorzugsweisen Ausführungsform besitzt die eine Elektrode Vorsprünge, und die andere ist eben. In diesem Fall kann die mit Vorsprüngen versehene Elektrode auch aus einem Sporurad bestehen, das, während es über die andere Elektrode rollt, nacheinander Schweißpunkte erzeugt. The two electrodes can be the same or different, and according to In a preferred embodiment, the one electrode has projections, and the other is just. In this case, the electrode provided with the protrusions can also consist of a spur wheel that as it rolls over the other electrode, one after the other Weld points generated.

Es sind zwar schon Werkzeuge zur Aufteilung schlauchförmiger Hüllen in einzelne Kammern bekannt, die mit Abstand voneinander angeordnete Vorsprünge aufweisen. Entweder liegen diese Vorsprünge aber quer zur Längsrichtung der Hülle, so daß der Flüssigkeit in der Hülle schon durch die von einem einzigen derartigen Vorsprung erzeugte Schweißnaht der Durchtritt verwehrt wird, oder aber, wenn die Vorsprünge in Längsrichtung der Hülle verlaufen, arbeiten die Werkzeuge mit Gegenwerkzeugen zusammen, die mit den Vorsprüngen des ersten Werkzeuges zusammenarbeitende Rillen aufweisen, so daß beide Werkzeuge ineinandergreifen und ebenfalls ein Flüssigkeitsdurchtritt schon im Anfangsstadium der Verschweißung unmöglich ist. There are tools for dividing tubular casings known in individual chambers, the spaced apart Have projections. However, these projections either lie transversely to the longitudinal direction the envelope, so that the liquid in the envelope is already through by a single such a protrusion generated weld the passage is denied, or else, when the projections run in the longitudinal direction of the shell, the tools work with counter tools that cooperate with the projections of the first tool Have grooves so that both tools interlock and also a liquid passage is impossible even in the initial stage of welding.

Sinn einer derartigen Riffelung der Behälter ist eine besondere Griffigkeit beim späteren Aufreißen der Schweißnaht, wenn der Behälter geöffnet werden soll.The purpose of such a corrugation of the container is a special grip when the weld seam is torn later when the container is to be opened.

Schließlich sind auch noch Schweißwerkzeuge bekannt, die mit einem elastischen Gegenwerkzeug zusammenarbeiten. Dabei ist es überhaupt nicht möglich, das von den Vorsprüngen des gerillten Werkzeuges beaufschlagte Kunststoffmaterial der Hülle seitlich wegzudrücken, wie es nach dem erfindungsgemäßen Verfahren geschieht.Finally, welding tools are also known that have a elastic counter tool work together. It is not at all possible the plastic material acted upon by the projections of the grooved tool to push away the envelope to the side, as is done according to the method according to the invention.

Die Erfindung wird nachstehend an Hand des in der Zeichnung dargestellten Ausführungsbeispiels beschrieben. Es zeigt Fig. 1 eine schematische Darstellung des erfindungsgemäßen Verfahrens und Fig. 2 und 3 verschiedene Ausführungsformen des erfindungsgemäßen Hochfrequenz-Schweißwerkzeuges. The invention is illustrated below with reference to the in the drawing Embodiment described. 1 shows a schematic representation of the method according to the invention and FIGS. 2 and 3 different embodiments of the high-frequency welding tool according to the invention.

In Fig. 1 ist schematisch das Abteilen einer mit Flüssigkeit gefüllten Kammer 1 gezeigt, wozu die dünnen Wandungen 2 der Kunststoffhülle z. B. durch mit Hochfrequenzstrom gespeiste Werkzeuge 4, 5 durch die Naht 3 miteinander verschweißt wurden. In Fig. 1, the dividing of a filled with liquid is schematically Chamber 1 shown, including the thin walls 2 of the plastic shell z. B. through with Tools 4, 5 fed by high frequency current are welded to one another through the seam 3 became.

Natürlich ist die Erfindung nicht auf die Anwendung des Hochfrequenzschweißens beschränkt, sondern bezieht sich auf die Verwendung von Schweißbacken oder -matrizen allgemein.Of course, the invention does not apply to the application of high frequency welding limited, but refers to the use of welding jaws or dies generally.

Wenigstens eines der Werkzeuge, z. B. hier das Werkzeug 4, weist Vorsprünge 6 mit dazwischenliegenden Rillen 7 auf. Das andere Werkzeug 5 kann in gleicher Weise ausgebildet oder auch mit einer glatten Schweißfiäche versehen sein. Wenn sich die beiden Werkzeuge 4, 5 in Arbeitsstellung befinden und die Schlauchwandungen 2 aneinanderdrücken, kann die Flüssigkeit der abgeteilten Kammer aus dieser über die von den Rillen 7 des Werkzeuges 4 nicht abgedrückten Durchtrittsöffnungen noch herausfließen, und zwar so lange, bis das von den Vorsprüngen 6 erweichte Material der Schlauchwandung die verbliebenen Durchtrittsöffnungen verschließt. At least one of the tools, e.g. B. here the tool 4 has Projections 6 with grooves 7 in between. The other tool 5 can be in designed in the same way or provided with a smooth welding surface. When the two tools 4, 5 are in the working position and the hose walls 2 press against each other, the liquid of the partitioned chamber from this can over the passage openings not pressed off by the grooves 7 of the tool 4 flow out until the material softened by the projections 6 the hose wall closes the remaining passage openings.

Erst dann wird der Durchtritt der Flüssigkeit völlig unterbrochen.Only then is the passage of the liquid completely interrupted.

Wichtig ist, daß die Rillen 7 des Werkzeuges 4 im wesentlichen parallel zu den Mantellinien der schlauchförmigen Hülle verlaufen, so daß ein Ausfließen der Flüssigkeit nur bei vollzogener Schweißung, nicht aber schon zu Beginn der Schweißung verhindert wird, wie dies bei glatten Werkzeugen der Fall ist. Werden nämlich dünnwandige Schläuche mit glatten Werkzeugen bearbeitet, besteht die Gefahr, daß der Flüssigkeitsdruck zum Platzen des Behälterabschnittes im Bereich der Schweißnaht führt und die Flüssigkeit ausströmt. It is important that the grooves 7 of the tool 4 are essentially parallel run to the surface lines of the tubular casing, so that an outflow of the liquid only when the welding is complete, but not at the beginning of the welding is prevented, as is the case with smooth tools. Namely, they are thin-walled Hoses processed with smooth tools, there is a risk of the liquid pressure leads to bursting of the container section in the area of the weld seam and the liquid emanates.

Nach Fig. 2 ist das Werkzeugl4 mit Rillen 17 versehen, welche die Vorsprünge 16 bilden, die sich bei geschlossenen Werkzeugen auf dem Werkzeug 15 abstützen. According to Fig. 2, the Werkzeugl4 is provided with grooves 17 which the Form projections 16, which Support on the tool 15 when the tools are closed.

Nach Fig. 3 werden die Rillen dadurch gebildet, daß die Platten 26 des Werkzeuges 24 durch Isolierplatten 27 voneinander im Abstand gehalten sind. According to Fig. 3, the grooves are formed by the plates 26 of the tool 24 are held at a distance from one another by insulating plates 27.

Durch eine in den Fortsatz 29 eingeschraubte Schraube 28 werden die Werkzeugteile zusammengespannt.By a screw 28 screwed into the extension 29, the Tool parts clamped together.

Die beschriebenen Ausführungsformen dienen nur als Beispiele und können auf verschiedene Weise abgewandelt werden, z. B. können die Vorsprünge der Werkzeuge z. B. vieleckig oder kreisförmig sein; außerdem müssen die Werkzeuge nicht gerade sein, sondern können ein Profil besitzen, das einer beliebigen Form der Kammer 1 entspricht. The embodiments described serve only as examples and can be modified in various ways, e.g. B. can the projections of the Tools e.g. B. be polygonal or circular; besides, the tools do not have to be straight, but can have a profile that matches any shape of the chamber 1 corresponds.

Die gemäß der Erfindung verwendeten Werkzeuge sichern, obwohl sie keine ebene Oberfläche besitzen, dank des Fließens des Schlauchmaterials einen vollständigen Abschluß der Kammern. Der Abschluß derselben erfolgt in zwei Stufen; in einer ersten erfolgt beim Aufsetzen der Werkzeugvorsprünge ein Verschweißen in Zonen, ohne den Durchgang der Flüssigkeit zur Kammer zu unterbrechen; in einer zweiten Stufe verdrängt der flüssig gewordene Kunststoff die Flüssigkeit aus den noch freien Zonen und verschließt dieselben, so daß ein weiterer Durchgang der Flüssigkeit zur Kammer verhindert ist. The tools used according to the invention secure, although they do not have a flat surface, a complete one thanks to the flow of the hose material Closure of the chambers. The conclusion of these takes place in two stages; in a first When the tool projections are put on, welding occurs in zones without the Interrupt passage of the liquid to the chamber; displaced in a second stage the plastic that has become liquid removes the liquid from the zones that are still free and seals it the same so that further passage of the liquid to the chamber is prevented.

Claims (7)

PATENTANSPRÜCHE: 1. Verfahren zur Herstellung von Behältern, Verpackungen u. dgl. aus thermoplastischem Kunststoff, wobei eine mit einer Flüssigkeit gefüllte, aus thermoplastischem Kunststoff gefertigte dünnwandige rohr- bzw. schlauchförmige Hülle durch quergeführte, unter Druck und Hitzeeinwirkung erzeugte Schweißnähte in einzelne, jeweils eine bestimmte Flüssigkeitsmenge enthaltende Kammern unterteilt wird, dadurch gekennzeichnet, daß bei der Schweißung jeder Querschweißnaht zunächst derart im Querabstand voneinander angeordnete, enge Flüssigkeitsdurchtrittsöffnungen frei lassende Zonen der aneinanderliegenin Wandungsteile verschweißt werden, daß bei Fortsetzung des Schweißvorganges das in den Schweißzonen erweichte Material der Hülle in die zwischen den Zonen zunächst frei gebliebenen Flüssigkeitsdurchtrittsöffnungen fließt und diese verstopft. PATENT CLAIMS: 1. Process for the production of containers, packaging and the like made of thermoplastic material, whereby a liquid-filled, thin-walled tubular or hose-shaped made of thermoplastic material Cover made of transverse welds produced under the influence of pressure and heat divided into individual chambers each containing a certain amount of liquid is, characterized in that each transverse weld seam is initially welded Narrow liquid passage openings arranged at a transverse distance from one another in this way Zones leaving free are welded together in wall parts that the material softened in the welding zones when the welding process is continued the casing into the liquid passage openings initially remaining free between the zones flows and clogs it. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Druck- und Hitzezonen für die Trennschweißung alle gleichzeitig oder nacheinander zur Wirkung gelangen. 2. The method according to claim 1, characterized in that the printing and heat zones for the separation weld all at the same time or one after the other to take effect reach. 3. Schweißwerkzeug zur Ausführung des Verfahrens nach den Ansprüchen 1 und 2, das in Abständen nebeneinanderliegende Vorsprünge besitzt, dadurch gekennzeichnet, daß die Vorsprünge in Längsrichtung der zu bearbeitenden Hülle verlaufen. 3. Welding tool for performing the method according to the claims 1 and 2, which has projections lying next to one another at intervals, characterized in that that the projections run in the longitudinal direction of the casing to be processed. 4. Schweißwerkzeug nach Anspruch 3, dadurch gekennzeichnet, daß es über die ganze Breite Vorsprünge und Rillen parallel zu den Mantellinien der Hülle besitzt. 4. Welding tool according to claim 3, characterized in that it over the entire width projections and grooves parallel to the surface lines of the casing owns. 5. Schweißwerkzeug nach Anspruch 3, dadurch gekennzeichnet, daß es eckige oder abgerundete Vorsprünge besitzt, die elektrisch miteinander verbunden sind. 5. Welding tool according to claim 3, characterized in that it Has angular or rounded projections that are electrically connected to one another are. 6. Schweißwerkzeug nach den Ansprüchen 3 bis 5. dadurch gekennzeichnet, daß nur eines der Schweißwerkzeuge (14) mit Vorsprüngen (16) und Rillen (17) versehen, während das andere Schweißwerkzeug (15) eben ausgebildet ist. 6. Welding tool according to claims 3 to 5, characterized in that that only one of the welding tools (14) is provided with projections (16) and grooves (17), while the other welding tool (15) is flat. 7. Schweißwerkzeug nach Anspruch 6, dadurch gekennzeichnet, daß das mit Vorsprüngen und Rillen versehene Schweißwerkzeug von einem Spornrad gebildet ist. 7. Welding tool according to claim 6, characterized in that the with projections and grooves provided welding tool formed by a star wheel is. In Betracht gezogene Druckschriften: Französische Patentschrift Nr. 1 166574; USA. -Patentschriften Nr. 2 369 362, 2 390 550, 2 395 531, 2 430 995, 2 624 992, 2704427. Documents considered: French patent specification No. 1 166574; UNITED STATES. - Patent Nos. 2 369 362, 2 390 550, 2 395 531, 2 430 995, 2 624 992, 2704427.
DEF29791A 1958-11-10 1959-11-06 Process for the production of containers, packaging and Like. Made of thermoplastic material and tools to carry out the process Pending DE1157995B (en)

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Cited By (1)

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DE3829042A1 (en) * 1988-08-26 1990-03-01 Jacobs Suchard Gmbh VACUUM PACKING, COMPOSITE FILM FOR PRODUCING A VACUUM PACKING, DEVICE FOR PRODUCING THE COMPOSITE FILM, AND METHOD FOR PRODUCING VACUUM PACKAGING

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Publication number Priority date Publication date Assignee Title
US2369362A (en) * 1942-06-05 1945-02-13 Frank Evans Bowker Pressure applicator
US2390550A (en) * 1941-08-04 1945-12-11 Shellmar Products Co Apparatus for sealing containers
US2395531A (en) * 1945-01-08 1946-02-26 Kenneth E Bemis Means for wrapping and sealing
US2430995A (en) * 1942-12-31 1947-11-18 Roos William Lawrence End-sealed thermoplastic container body
US2624992A (en) * 1948-11-19 1953-01-13 Ivers Lee Co Package sealing die having resilient facing strip
US2704427A (en) * 1952-06-02 1955-03-22 Liquifoil Corp Apparatus for capsulating liquids
FR1166574A (en) * 1956-12-27 1958-11-13 Pad Y Wax Company Improvements to packaging, in particular for medicinal and food substances, and to their manufacturing processes

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2390550A (en) * 1941-08-04 1945-12-11 Shellmar Products Co Apparatus for sealing containers
US2369362A (en) * 1942-06-05 1945-02-13 Frank Evans Bowker Pressure applicator
US2430995A (en) * 1942-12-31 1947-11-18 Roos William Lawrence End-sealed thermoplastic container body
US2395531A (en) * 1945-01-08 1946-02-26 Kenneth E Bemis Means for wrapping and sealing
US2624992A (en) * 1948-11-19 1953-01-13 Ivers Lee Co Package sealing die having resilient facing strip
US2704427A (en) * 1952-06-02 1955-03-22 Liquifoil Corp Apparatus for capsulating liquids
FR1166574A (en) * 1956-12-27 1958-11-13 Pad Y Wax Company Improvements to packaging, in particular for medicinal and food substances, and to their manufacturing processes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3829042A1 (en) * 1988-08-26 1990-03-01 Jacobs Suchard Gmbh VACUUM PACKING, COMPOSITE FILM FOR PRODUCING A VACUUM PACKING, DEVICE FOR PRODUCING THE COMPOSITE FILM, AND METHOD FOR PRODUCING VACUUM PACKAGING
US4993555A (en) * 1988-08-26 1991-02-19 Jacobs Suchard Ag Pack, composite sheet for producing a pack, apparatus for producing the composite sheet, and process for producing vacuum packs

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