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EP0111131B1 - Tube d'emballage - Google Patents

Tube d'emballage Download PDF

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Publication number
EP0111131B1
EP0111131B1 EP83110690A EP83110690A EP0111131B1 EP 0111131 B1 EP0111131 B1 EP 0111131B1 EP 83110690 A EP83110690 A EP 83110690A EP 83110690 A EP83110690 A EP 83110690A EP 0111131 B1 EP0111131 B1 EP 0111131B1
Authority
EP
European Patent Office
Prior art keywords
headpiece
tubular body
tube
connecting element
outer rim
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83110690A
Other languages
German (de)
English (en)
Other versions
EP0111131A1 (fr
Inventor
Engelbert Sander
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.)
Automation Industrielle SA
Original Assignee
Automation Industrielle SA
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 Automation Industrielle SA filed Critical Automation Industrielle SA
Publication of EP0111131A1 publication Critical patent/EP0111131A1/fr
Application granted granted Critical
Publication of EP0111131B1 publication Critical patent/EP0111131B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/02—Body construction
    • B65D35/12—Connections between body and closure-receiving bush

Definitions

  • the invention relates to a packaging tube, consisting of a tube, a multilayer composite film with a metallic barrier layer, a prefabricated plastic conical head piece with a removal opening and a connecting body arranged thereon, which consists of a composite film containing a metal layer and at least one plastic layer, whereby the circumferential edge of the tube overlaps the outer edge of the connecting body under or overlapping and their superimposed plastic layers are softened by inductive generation of heat in the metal of the composite films and are welded together under pressure.
  • Such a packaging tube is known from FIGS. 4.5 and the associated description of DE-A No. 2628014.
  • the prefabricated head piece is made of polyethylene and is welded to the tube by means of the connecting body by inductive heating of the metal layer by high frequency, which softens the adjacent plastic layers.
  • the peripheral edge of the tube tube extends over the connecting body.
  • the peripheral edge of the tube tube engages under the connecting body.
  • the plastic layers of the connecting body and the tubular body are made of a material that can be: welded well with the tube head made of polyethylene.
  • the connecting body has a barrier layer
  • the tube shoulder of this tube part is protected against diffusion, in particular from the outside, but the polyethylene tube head arranged between the barrier layer and the filling material absorbs considerable amounts of volatile constituents, e.g. Flavorings, which causes a disadvantageous change in the quality of the filling.
  • the connecting body with the barrier layer forms the entire conical part of the head piece and its barrier layer forms part of the removal opening.
  • a threaded head sleeve is then placed only on this part.
  • B. by the multiple deformation of the aluminum barrier layer in different directions and the connection with the threaded head sleeve much more complicated.
  • the stiffness of the head suffers if no additional measures which complicate the manufacture and become more expensive are taken.
  • the tube described there has a tubular body made of a layer material with an impermeable aluminum foil.
  • the tubular body is pushed onto a mandrel on which a separating insert made of a largely gas-impermeable plastic material is placed.
  • the separating insert has an edge surface against which the upper edge of the tube is molded.
  • a head piece made of a relatively gas-permeable, easily deformable thermoplastic material (polyethylene) is then cast in an injection mold.
  • the separating insert has annular beads which protrude into the head piece.
  • the dividing insert is made of a material that does not fuse with the material of the head piece under normal conditions; leaves what is the case with the known impermeable plastics suitable for locking elements, the connection depends entirely on the bead-groove connection.
  • a variant of this solution provides that the separating insert is also led into the neck and surrounds the dispensing channel. By pouring the relatively thick head pieces onto the tube, the manufacturing technology is also complicated and expensive.
  • the object of the invention is to provide a packaging tube of the type mentioned at the outset, which surrounds a tube hold in the head region almost completely gas-tight, possibly reducing the consumption of impermeable plastic which is difficult to melt with the plastics of the foils, and the individual parts thereof in one operation in a simple manner are firmly connected
  • the upper part can be completely covered by the lower gas-impermeable part, so that gas-tightness is guaranteed. Since the upper part can easily be fused with the plastic layers of the composite film, a firm connection of these parts is also achieved. Due to the undercut, e.g. in the form of a partially keg-shaped design of the outer edge, a firm locking between the upper and lower head part is ensured by the introduction and molding of plastic material onto this edge.
  • the head piece can be used for different tube diameters without change. In the case of different diameters, only the connecting body has to be changed, so that the consumption of expensive impermeable plastic material remains the same despite the enlargement of the tube diameter.
  • two advantageous variants of the connection of the head parts of the connecting body and the tubular body are set out, by means of which the gas tightness is maintained when the head is connected to the tubular body.
  • the lower part of the head piece can consist of an impermeable plastic or of a coated or uncoated metal.
  • a tube according to the invention contains a tube tube 1 made of a composite film in the form of a three-layer laminate film.
  • a central aluminum layer 2 is connected on both sides with thermoplastic layers 3, 3 'as outer layers, which e.g. can consist of polyethylene or polypropylene.
  • Both plastic layers 3, 3 ' are made from one material or each from a different material and with different thicknesses, optionally also using intermediate layers depending on the intended tube content, the tube sizes or other parameters.
  • the tube also contains a prefabricated conical head piece 4 which opens at the tapered end into a neck 6 surrounding the removal opening 5 of the tube.
  • the neck 6 has an external thread, not shown, for screwing on a closure cap, not shown.
  • the head piece 4 has an outer diameter D. which is smaller than the inner diameter D of the tubular body 1.
  • the head piece 4 is made in two parts from an upper part 7 with the neck 6 and a lower part 8.
  • the lower part 8 closes the upper head part 7 completely downwards.
  • the lower part 8 preferably has a cylindrical upward projection 9, which forms at least part of the inner wall of the removal opening 6.
  • the upper part 7 has a recess corresponding to the projection 9.
  • the upper head part 7 consists of a thermoplastic material which can be relatively permeable, e.g. B.
  • This upper part 7 of the head piece 4 should consist of a plastic that can easily be fused with the plastic layers 3, 3 'of the laminate film.
  • the lower head part 8 should consist of a relatively impermeable plastic material, for example a thermoplastic material with greater impermeability such as polypropylene, polyamide, polyester or a thermosetting plastic such as urea-formaldehyde, polyurethane or another plastic or a plastic mixture with comparable properties. These materials are comparatively difficult to weld to the material of the plastic layers 3, 3 'of the laminate film.
  • Impermeable plastic material is understood to mean any plastics which are diffusion-resistant with respect to the respective tube content and which also do not absorb any volatile constituents of the tube content. Since the gas permeability is known for almost all plastics, experimental tests with the tube contents are advantageous for the selection of suitable plastics.
  • the lower part (8) can also be made of a metal, e.g. Aluminum can be made in the form of a thin disc with or without a plastic or lacquer coating on one or both sides.
  • a metal e.g. Aluminum can be made in the form of a thin disc with or without a plastic or lacquer coating on one or both sides.
  • the head piece 4 tapers towards the outer edge and has an outer edge 10 formed by both head parts 7, which represents a partial surface of a cone, the tip of which lies on the central axis 11 of the tube and is directed opposite the removal opening 5.
  • the connecting body 13 is similar or identical to the tube tube 1 in terms of material and layer structure and thus also has an aluminum layer 2 and plastic layers 3, 3 '.
  • the connecting body 13 has a step 14.
  • the step 14 has such a height that the tapered outer edge 10 is completely or at least partially covered, so that one step side 15 lies opposite the outer edge 10 of the head piece 4.
  • the inwardly curved peripheral edge 17 of the tubular body 1 is directed with its cutting edge against the other step side 16.
  • the inwardly curved peripheral edge 17 is underlaid by the outer edge of the connecting body 13.
  • the cut edge of the bent peripheral edge 17 lies opposite the tapered outer edge 10 and is overlaid by the outer edge of the connecting body 13.
  • the head piece 4 is composed of the two parts 7 and 8, then the connecting body 13 is placed on top (according to FIG. 1 one with a step 14 according to FIG. 3 one without a step) and finally the tube body 1 becomes the connecting body 13 marginally overlapping (Fig. 1) or below (Fig. 3) molded. Then, in particular, the aluminum layer 2 in the connecting body 13 and in the edge region of the tube tube 1 is heated, in particular by high-frequency induction, as a result of which the adjacent plastic layers 3, 3 ′ are softened and melted. The fixed connection of the connecting body 13 with the head piece 4 and the tube tube 1 is ensured by pressurization, the softened plastic being distributed in such a way that the gaps 18 and 18 'are filled (see FIGS.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tubes (AREA)

Claims (6)

1. Tube d'emballage ou emballage tubulaire composé d'un tube, fait d'une feuille composite multicouche comprenant une couche barrière métallique, une pièce de tête conique, préfabriquée, réalisée en matière plastique et présentant une ouverture de sortie, et un élément d'assemblage disposé sur cette tête et qui est composé d'une feuille composite comprenant une couche métallique et au moins une couche de matière plastique, le bord périphérique de la partie tubulaire du tube étant disposé à recouvrement par rapport au bord extérieur de l'élément d'assemblage, par-dessous ou par-dessus, et les couches de matière plastique de cette partie et de cet élément qui sont appliquées l'une sur l'autre étant ramollies sous l'effet d'un dégagement de chaleur par induction dans le métal des couches composites et étant soudées l'une à l'autre par l'utilisation d'une pression, caractérisé en ce que la pièce de tête (4) est composée de deux parties (7, 8) disposées l'une au-dessus de l'autre, la partie inférieure (8) recouvrant entièrement la partie supérieure (7) vers le bas et étant composée d'une matière imperméable, en ce que le diamètre extérieur (Da) de la pièce de tête (4) est plus petit que le diamètre intérieur (D;) de la partie tubulaire (1 ) du tube, en ce que la tranche de bord extérieur (10) de la pièce de tête (4) qui est formée par les deux parties (7, 8) est à contre-dépouille et en ce que la matière plastique de la feuille composite de l'élément d'assemblage (13) ou de la partie tubulaire (1 ) du tube est moulée contre la tranche de bord extérieur (10) à contre-dépouille de la pièce de tête (15), en recouvrant au moins la ligne de jonction entre la partie supérieure (7) et la partie inférieure (8).
2. Tube d'emballage selon la revendication 1, caractérisé en ce que le bord périphérique (17) de la partie tubulaire (1 ) du tube qui est rabattu vers l'intérieur est appuyé bord à bord contre la tranche de bord extérieur (10) de la pièce de tête (4) et est recouvert par la région marginale extérieure de l'élément d'assemblage (13).
3. Tube d'emballage selon la revendication 1, caractérisé en ce que, contre la tranche (10) du bord extérieur de la pièce de tête (4), est appuyée une face de gradin (15) de l'élément d'assemblage (13) réalisé avec un gradin (14) et en ce que, contre l'autre face (16) du gradin (14), est appuyé bord à bord le bord périphérique (17) de la partie tubulaire (1 ) du tube, qui est rabattu vers l'intérieur, ce bord recouvrant le bord extérieur de l'élément d'assemblage (13).
4. Tube d'emballage selon l'une des revendications 1 à 3, caractérisé en ce que la partie inférieure (8) de la pièce de tête (4) est munie d'une saillie cylindrique (9) qui forme au moins en partie la paroi intérieure de l'ouverture de sortie (5) et en ce que la partie supérieure (7) présente un évidement correspondant.
5. Tube d'emballage selon l'une des revendications 1 à 4, caractérisé en ce que la partie inférieure (8) de la pièce de tête (4) est composée d'une matière plastique imperméable.
6. Tube d'emballage selon l'une des revendications 1 à 4, caractérisé en ce que la partie inférieure (8) de la pièce de tête (4) est faite d'un métal.
EP83110690A 1982-10-29 1983-10-26 Tube d'emballage Expired EP0111131B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8230491U 1982-10-29
DE8230491U DE8230491U1 (de) 1982-10-29 1982-10-29 Verpackungstube

Publications (2)

Publication Number Publication Date
EP0111131A1 EP0111131A1 (fr) 1984-06-20
EP0111131B1 true EP0111131B1 (fr) 1986-02-19

Family

ID=6745117

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83110690A Expired EP0111131B1 (fr) 1982-10-29 1983-10-26 Tube d'emballage

Country Status (2)

Country Link
EP (1) EP0111131B1 (fr)
DE (2) DE8230491U1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19808295A1 (de) 1998-02-27 1999-11-11 Boehringer Ingelheim Int Behälter für eine medizinische Flüssigkeit
CH696318A5 (de) * 2002-12-09 2007-04-13 Packtech Ltd Verpackungsbehälter für pastöse Packstoffe, insbesondere Verpackungstube

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL157268C (fr) * 1968-03-20
JPS5712739B2 (fr) * 1973-04-23 1982-03-12
JPS583902B2 (ja) * 1975-06-27 1983-01-24 カ−ル・メ−ゲルレ 包装用チユ−ブ
US4185757A (en) * 1977-07-08 1980-01-29 Schultz Robert S Collapsible dispensing tube having an anchored barrier member

Also Published As

Publication number Publication date
EP0111131A1 (fr) 1984-06-20
DE8230491U1 (de) 1982-12-30
DE3362199D1 (en) 1986-03-27

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