DE2951597A1 - Multilayer sealable paper bag has inner lining sealed - while closure flap is folded back to expose layers to heat - Google Patents

Multilayer sealable paper bag has inner lining sealed - while closure flap is folded back to expose layers to heat

Info

Publication number
DE2951597A1
DE2951597A1 DE19792951597 DE2951597A DE2951597A1 DE 2951597 A1 DE2951597 A1 DE 2951597A1 DE 19792951597 DE19792951597 DE 19792951597 DE 2951597 A DE2951597 A DE 2951597A DE 2951597 A1 DE2951597 A1 DE 2951597A1
Authority
DE
Germany
Prior art keywords
inner layer
heat
welding
closure flap
inner lining
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.)
Withdrawn
Application number
DE19792951597
Other languages
German (de)
Inventor
Gustav 7590 Achern Kuckhermann
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.)
Icoma Packtechnik GmbH
Original Assignee
Icoma Packtechnik 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 Icoma Packtechnik GmbH filed Critical Icoma Packtechnik GmbH
Priority to DE19792951597 priority Critical patent/DE2951597A1/en
Priority to DE8080107951T priority patent/DE3070186D1/en
Priority to EP80107951A priority patent/EP0031129B1/en
Priority to CA000367176A priority patent/CA1155096A/en
Priority to US06/218,238 priority patent/US4353770A/en
Priority to JP18060780A priority patent/JPS56127440A/en
Publication of DE2951597A1 publication Critical patent/DE2951597A1/en
Withdrawn legal-status Critical Current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
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
    • B29C65/1448—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface radiating the edges of the parts to be joined, e.g. for curing a layer of adhesive placed between two flat parts to be joined, e.g. for making CDs or DVDs
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1496—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation making use of 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
    • 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
    • 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
    • B29C66/70—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
    • B29C66/7232—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 comprising a non-plastics layer
    • B29C66/72327—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 comprising a non-plastics layer consisting of natural products or their composites, not provided for in B29C66/72321 - B29C66/72324
    • B29C66/72328—Paper
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/93—Measuring or controlling the joining process by measuring or controlling the speed
    • B29C66/934—Measuring or controlling the joining process by measuring or controlling the speed by controlling or regulating the speed
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/1403—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the type of electromagnetic or particle radiation
    • B29C65/1412—Infrared [IR] radiation
    • 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
    • B29C66/7232—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 comprising a non-plastics layer
    • B29C66/72321—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 comprising a non-plastics layer consisting of metals or their alloys
    • 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
    • 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
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B29K2711/123—Coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Thermal Sciences (AREA)
  • Making Paper Articles (AREA)
  • Closing Of Containers (AREA)
  • Package Closures (AREA)
  • Bag Frames (AREA)

Abstract

A method of sealing (welding) the inner lining of a multi-layer paper bag having a staggered closure flap comprises the following. The closure flap (4) fixed to the rear side of the paper bag is folded back about a fold line (5) set back (i.e. further down) from the edge (6) of the inner lining (3). While it is in this folded-back state, heat is applied to the exposed inner layer (3) to seal the superimposed layers together. The fold line (5) may lie virtually coincident with the edge (6). Infrared thermal energy may be used for the sealing, regulated as a function of the speed of passage of the bag. This method ensures better penetration of heat to the various thickness of paper than was possible without the folding back of the flap. Thus prodn. rates can be increased.

Description

"Verfahren zum Verschweißen der Innenlagen "Process for welding the inner layers

von mehrlagigen Papiersäcken" Die Erfindung betrifft ein Verfahren zum Verschweißen der Innenlagen eines mehrlagigen Papiersacks mit auf der Innenlage vorgesehener, verschweißbarer Innenschicht und gestaffelter Verschlußklappe. of multilayer paper sacks "The invention relates to a method for welding the inner layers of a multi-layer paper sack onto the inner layer provided, weldable inner layer and staggered closure flap.

Mehrlagige Papiersäcke mit verschweißbaren Innenlagen sind in unterschiedlichen Ausführungsformen bekannt. Es kann beispielsweise eine Folienbahn auf die innenliegende Papierlage aufkaschiert oder aufgeklebt sein. Es kann auch die Innenseite der Innenlage mit einer thermoplastischen Beschichtung versehen sein, beispielsweise mit einer Polyäthylenbeschichtung.Multi-layer paper bags with weldable inner layers are available in different Embodiments known. For example, a sheet of film can be placed on the inside Paper layer laminated or glued on. It can also be the inside of the inner layer be provided with a thermoplastic coating, for example with a Polyethylene coating.

Bisher erfolgte das Verschweißen der verschweißbaren Innenschicht durch Aufbringen der Wärme mit unterschiedlichen Verfahren.So far, the weldable inner layer has been welded by applying the heat with different methods.

Es sind beispielsweise Infrarotbeheizungsverfahren bekannt; es ist auch bekannt, die Wärme mit beheizten Druckleisten auf die zu verschweißenden Stellen aufzubringen.For example, infrared heating methods are known; it is also known to apply heat to the areas to be welded with heated pressure strips to raise.

Bei allen bisher bekannten Verfahren zum Verschweißen hat es sich als nachteilig erwiesen, daß lediglich auf einer Seite des Papiersacks, beispielsweise auf der Vorderseite, die zu verschweißende Innenlage unmittelbar mit Wärme beaufschlagt werden kann. Die mit der vorderen Innenlage zu verschweißende rückwärtige Innenlage ist von der Rückseite des Sacks nicht unmittelbar erreichbar. Die auf die rückwärtige Innenlage aufzubringende Wärme muß durch die die rückwärtige Innenlage übergreifende Verschlußklappe hindurch aufgebracht werden.In all previously known methods for welding, it has proved to be disadvantageous that only on one side of the paper sack, for example on the front side, the inner layer to be welded is directly exposed to heat can be. The rear inner layer to be welded to the front inner layer is not directly accessible from the back of the sack. The one on the back The heat to be applied to the inner layer must pass through the heat which overlaps the rear inner layer Closure flap are applied through.

Dies hat zur Folge, daß die Herstellungs- und Verarbeitungsgeschwindigkeit solcher Säcke mit verschweißbaren Innenlagen begrenzt ist. Die Verarbeitungsgeschwindigkeit wird im wesentlichen bestimmt durch die Dicke und Anzahl der die Innenlage umgebenden äußeren Papierschichten.This has the consequence that the production and processing speed such bags with weldable inner layers is limited. The processing speed is essentially determined by the thickness and number of those surrounding the inner layer outer layers of paper.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein Verfahren der eingangs erwähnten Art so auszubilden, daß es eine von der Zahl und Dicke der äußeren Lagen unabhängige, möglichst hohe Verarbeitungsgeschwindigkeit erlaubt.On the basis of this prior art, the object of the invention is to be found based on a method of the type mentioned in such a way that it is one of The highest possible processing speed independent of the number and thickness of the outer layers permitted.

Die Lösung dieser Aufgabe erfolgt erfindungsgemäß dadurch, daß vor dem Verschweißen die auf der Rückseite des Papiersacks angeordnete Verschlußklappe von der Innenlage weggeklappt wird um eine Falzlinie, die, in Richtung auf das Sackzentrum gesehen, hinter den Kanten der Innenlage zurückliegt, und daß im weggeklappten Zustand der Verschlußklappe von außen Wärme auf die freiliegende Innenlage zum Verschweißen der aufeinanderliegenden Innenschichten aufgebracht wird.This object is achieved according to the invention in that before the sealing flap arranged on the back of the paper sack after welding It is folded away from the inner layer around a fold line which, in the direction of the center of the sack seen, behind the edges of the inner layer, and that in the folded away state the closing flap from the outside heat to the exposed inner layer for welding the superimposed inner layers is applied.

Ein derartiges Verfahren erlaubt eine extrem hohe Verarbeitungsgeschwindigkeit der Papiersäcke. Dadurch, daß die zur Verschweißung erforderliche Wärme unmittelbar auf die verschweißbaren Innenschichten gebracht werden kann und nicht hindernde Außenschichten durchtreten muß, können die erforderlichen Schweißverbindungen nicht nur schnell, sondern auch in hoher Qualität erstellt werden.Such a method allows an extremely high processing speed the paper sacks. Because the heat required for welding is immediate can be brought to the weldable inner layers and not obstructive Must penetrate outer layers, the required welds can not can only be created quickly, but also in high quality.

Das Verfahren kann bei allen Papiersäcken mit gestaffelter Verschlußklappe angewendet werden, bei denen die Verschlußklappe bis hinter die Schnittkanten der Innenlage zurückgeklappt werden kann. Das erfindungsgemäße Verfahren läßt sich mit großem Vorteil insbesondere bei einem Falzbodensack verwenden.The method can be used for all paper sacks with a staggered closure flap be used, in which the flap to behind the cut edges of the Inner layer can be folded back. The inventive method can be with Use a great advantage especially with a folded bottom sack.

Gemäß einem weiteren Vorschlag der Erfindung wird die Wärme mittels Infrarotstrahlern aufgebracht, deren Energieabgabe in Abhängigkeit von der Vorschubgeschwindigkeit der Säcke steuerbar ist.According to a further proposal of the invention, the heat is by means Infrared emitters applied, their energy output depending on the feed speed the bags are controllable.

Eine derartige Regelung stellt bei allen Betriebszuständen eine stets einwandfreie Verschweißung sicher.A regulation of this kind always provides one in all operating states perfect welding safe.

Nachstehend wird die Erfindung anhand der Zeichnung im einzelnen erläutert. Es zeigen: Figur 1 eine perspektivische Ansicht eines Teils, eines Seitenfaltensacks mit Verschlußklappe, der mit dem erfindungsgemäßen Verfahren verarbeitet werden kann, Figur 2 eine schematische Seitenansicht auf das Ende eines dreilagigen Seitenfaltensacks, Figur 3 eine Draufsicht von oben auf den Seitenfaltensack gemäß Figur 2, Figur 4 die schematische Ansicht gemäß Fig. 2 mit nach hinten weggeklappter Verschlußklappe.The invention is explained in detail below with reference to the drawing. The figures show: FIG. 1 a perspective view of part of a gusseted sack with closure flap, which can be processed with the method according to the invention can, Figure 2 is a schematic side view of the end of a three-layer gusseted sack, FIG. 3 shows a plan view from above of the gusseted sack according to FIG. 2, FIG. 4 the schematic view according to FIG. 2 with the flap folded away to the rear.

Der Seitenfaltensack besteht im dargestellten Ausführungsbeispiel aus insgesamt drei Lagen, nämlich aus zwei äußeren Papierlagen 1 und 2 und einer Innenlage 3, die ebenfalls aus Papier besteht, jedoch eine Polyäthylenbeschichtung an ihrer Innenseite aufweist. Zur Verwendung des erfindungsgemäßen Verfahrens sind auch Säcke mit beliebig viel Außenlagen aus Papier geeignet. Je größer die Anzahl der äußeren Lagen aus Papier wird, desto vorteilhafter ist die Anwendung des Verfahrens.The gusseted sack exists in the illustrated embodiment from a total of three layers, namely from two outer layers of paper 1 and 2 and one Inner layer 3, which is also made of paper, but with a polyethylene coating has on its inside. To use the method according to the invention are Bags with any number of outer layers made of paper are also suitable. The greater the number of the outer layers of paper, the more advantageous the application of the method.

Die Innenlage 3 kann auch beispielsweise einen aufkaschierten Polyäthylenfilm und/oder eine aufkaschierte Aluminiumfolie aufweisen.The inner layer 3 can also, for example, be a laminated polyethylene film and / or have a laminated aluminum foil.

Das Wegklappen der Verschlußklappe 4 erfolgt entlang der Falzlinie 5. Durch das Wegklappen der Klappe 4 nach hinten wird die Innenlage 3 von beiden Seiten aus zugänglich (vergl.The flap 4 is folded away along the fold line 5. By folding away the flap 4 to the rear, the inner layer 3 of both Pages accessible from (cf.

Figur 4) und kann, beispielsweise mit Hilfe von Wärmeschweißbacken 16 verschweißt werden.Figure 4) and can, for example with the help of heat welding jaws 16 are welded.

Die Falzlinie 5 liegt - in Richtung auf das Sackzentrum gesehen - hinter den Kanten 6 der Innenlage 3, die verschweißt werden soll.The fold line 5 is - viewed in the direction of the center of the sack - behind the edges 6 of the inner layer 3 that is to be welded.

Eine Wärmezufuhr auf den freiliegenden Bereich der-Innenlage kann auch mit Hilfe mit Infrarotstrahlern erfolgen, deren Leistung in Abhängigkeit von der Vorschubgeschwindigkeit der zu verschweißenden Papiersäcke geregelt werden kann.Heat can be applied to the exposed area of the inner layer can also be done with the help of infrared heaters, the performance of which depends on the feed speed of the paper bags to be welded can be regulated.

LeerseiteBlank page

Claims (2)

Patentansprüche 1. Verfahren zum Verschweißen der Innenlage eines mehrlagigen 1. Verfahren zum Verschweißen der Innenlage eines mehrlagigen Papiersacks mit auf der Innenlage vorgesehener verschweißbarer verschweinbarer Innenschicht und gestaffelter Verschlußklappe, d a d u r c h g e k e n n z e i c h n e t, daß vor dem Verschweißen die auf der Rückseite des Papiersacks angeordnete Verschlußklappe (4) von der Innenlage (3) weggeklappt wird um eine Falzlinie (5), die in Richtung auf das Sackzentrum gesehen, hinter den Kanten (6) der Innenlage (3) zurückliegt, und daß im weggeklappten Zustand der Verschlußklappe (4) von außen Wärme auf die freiliegende Innenlage (3) zum Verschweißen der aufeinanderliegenden Innenschichten aufgebracht wird. Claims 1. A method for welding the inner layer of a multilayer 1st method for welding the inner layer of a multilayer paper sack with weldable sweatable inner layer provided on the inner layer and staggered closing flap, d u r k h e k e nn n n e i c h n e t that before welding the closing flap arranged on the back of the paper sack (4) is folded away from the inner layer (3) around a fold line (5) in the direction of looking at the center of the sack, lies behind the edges (6) of the inner layer (3), and that in the folded away state of the closure flap (4) from the outside heat on the exposed inner layer (3) for welding the inner layers lying on top of one another is applied. 2. Verfahren nach Anspruch 1, d a d u r c h g e k e n nz e i c h n e t, daß die zum Verschweißen benötiqte Wärmeenergie mittels Infrarotstrahlern aufgebracht wird, deren Energieabgabe in Abhängigkeit von der Vorschubgeschwindigkeit der Säcke regelbar ist. 2. The method according to claim 1, d a d u r c h g e k e n nz e i c h n e t that the heat energy required for welding by means of infrared radiators is applied, the energy output of which depends on the feed speed the bags can be regulated.
DE19792951597 1979-12-21 1979-12-21 Multilayer sealable paper bag has inner lining sealed - while closure flap is folded back to expose layers to heat Withdrawn DE2951597A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE19792951597 DE2951597A1 (en) 1979-12-21 1979-12-21 Multilayer sealable paper bag has inner lining sealed - while closure flap is folded back to expose layers to heat
DE8080107951T DE3070186D1 (en) 1979-12-21 1980-12-17 Method of welding the internal layers of multi-layer paper sacks
EP80107951A EP0031129B1 (en) 1979-12-21 1980-12-17 Method of welding the internal layers of multi-layer paper sacks
CA000367176A CA1155096A (en) 1979-12-21 1980-12-19 Method for welding the inner layers of multi-layer paper sacks
US06/218,238 US4353770A (en) 1979-12-21 1980-12-19 Method for welding the inner layers of multi-layer paper sacks
JP18060780A JPS56127440A (en) 1979-12-21 1980-12-22 Method of fusing inside layer of multilayer paper bag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792951597 DE2951597A1 (en) 1979-12-21 1979-12-21 Multilayer sealable paper bag has inner lining sealed - while closure flap is folded back to expose layers to heat

Publications (1)

Publication Number Publication Date
DE2951597A1 true DE2951597A1 (en) 1981-07-09

Family

ID=6089184

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792951597 Withdrawn DE2951597A1 (en) 1979-12-21 1979-12-21 Multilayer sealable paper bag has inner lining sealed - while closure flap is folded back to expose layers to heat

Country Status (2)

Country Link
JP (1) JPS56127440A (en)
DE (1) DE2951597A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3425608A1 (en) * 1984-07-12 1986-01-23 Icoma Packtechnik GmbH, 7590 Achern METHOD FOR PRODUCING MULTI-LAYER PAPER BAGS WITH STRAIGHTED CAP

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58167175A (en) * 1982-03-29 1983-10-03 Pentel Kk Multicolor printing
JPS58167174A (en) * 1982-03-29 1983-10-03 Pentel Kk Multicolor printer
DE4006833C1 (en) * 1990-03-05 1991-05-23 Papierfabrik Oberschmitten Gmbh, 6478 Nidda, De
US5653055A (en) 1995-01-31 1997-08-05 Nihon Tensaiseito Kabushiki Kaisha Continuously assembled pots for raising and transplanting seedlings

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3425608A1 (en) * 1984-07-12 1986-01-23 Icoma Packtechnik GmbH, 7590 Achern METHOD FOR PRODUCING MULTI-LAYER PAPER BAGS WITH STRAIGHTED CAP

Also Published As

Publication number Publication date
JPH026682B2 (en) 1990-02-13
JPS56127440A (en) 1981-10-06

Similar Documents

Publication Publication Date Title
EP0031129B1 (en) Method of welding the internal layers of multi-layer paper sacks
DE69823391T2 (en) PACKAGING CONTAINER FOR THE COLD STORAGE OF LIQUID FOODSTUFFS AND METHOD FOR PRODUCING THIS CONTAINER
DE3629563C2 (en)
EP0177945B1 (en) Weld for the junction of two thin sheets
DE2005961C2 (en) Method for binding sheets of paper to form a book
WO1988000562A1 (en) Package for packing pieces of goods and process of manufacture thereof
DE1761220A1 (en) Card cover
DE2412447A1 (en) LIQUID AND GAS SEAL RESERVOIR AND METHOD AND DEVICE FOR MANUFACTURING THE SAME
EP2464510A1 (en) Method and device for producing a sack or a bag having plastic non-woven material, and sack or bag comprising plastic non-woven material
DE1561425C3 (en) Method for producing a tubular packaging part
EP0722408B1 (en) Bag, in particular for packaging humidity-sensitive substances
EP0200877A2 (en) Liquid package, and process and device for making such a package
EP0957045A1 (en) Packaging sheet with integral opening- and reclosing system
EP0824478B1 (en) Process for producing products secured to a substrate, like credit and identity cards and like
DE2951597A1 (en) Multilayer sealable paper bag has inner lining sealed - while closure flap is folded back to expose layers to heat
DE2331335C3 (en)
DE2445248C3 (en) Method for shaping the opening-side end of a film layer
DE2031036A1 (en) Method of heat sealing fohen leaves
DE3601650C2 (en)
DE69503607T4 (en) METHOD AND DEVICE FOR WATERPROOFING EDGES OF THE CUT
DE2008607A1 (en) Method and device for joining thermoplastic materials and products manufactured therefrom
DE8028588U1 (en) Tobacco pouch
DE3618793A1 (en) COMPOSITE FILM
DE3739641A1 (en) Process for producing padded bags
DE2355326C2 (en) Process for making boxes

Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
AG Has addition no.

Ref country code: DE

Ref document number: 3046036

Format of ref document f/p: P

8130 Withdrawal