EP0652103A1 - Verpackungsverbundfolie und Verpackungsbeutel bestehend aus einer solchen Folie - Google Patents

Verpackungsverbundfolie und Verpackungsbeutel bestehend aus einer solchen Folie Download PDF

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Publication number
EP0652103A1
EP0652103A1 EP94402499A EP94402499A EP0652103A1 EP 0652103 A1 EP0652103 A1 EP 0652103A1 EP 94402499 A EP94402499 A EP 94402499A EP 94402499 A EP94402499 A EP 94402499A EP 0652103 A1 EP0652103 A1 EP 0652103A1
Authority
EP
European Patent Office
Prior art keywords
composite sheet
films
sheet according
film
fraction
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Withdrawn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
EP94402499A
Other languages
English (en)
French (fr)
Inventor
Philippe Clement
Gérard Bonnet
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.)
Amcor Flexibles France SAS
Original Assignee
C M B FLEXIBLE
CMB Flexible
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 C M B FLEXIBLE, CMB Flexible filed Critical C M B FLEXIBLE
Publication of EP0652103A1 publication Critical patent/EP0652103A1/de
Withdrawn legal-status Critical Current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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/02—Local reinforcements or stiffening inserts, e.g. wires, strings, strips or frames

Definitions

  • the present invention relates to a composite packaging sheet, of the type comprising two films bonded to each other.
  • Composite sheets of this type are widely used for packaging, in particular in sachets, of food products.
  • the two films are typically one in oriented polypropylene, easily tearable, and the other in polyethylene, clearly more resistant to tearing.
  • the object of the invention is to economically improve the tear resistance of the composite sheets in question.
  • the subject of the invention is a composite sheet as defined in claim 1.
  • the composite sheet according to the invention may include one or more of the characteristics described in sub-claims 2 to 12.
  • the invention also relates to a bag made of a composite sheet as defined above, closed by a bottom seal and a side seal.
  • the welds and the cuts of the composite sheet are carried out outside the reinforcement zone.
  • the composite sheet 1 shown in Figures 1 and 2 has a rectangular shape which is obtained by cutting, along two transverse lines 2 front and rear 3 indicated in phantom, in a continuous strip unwound from a coil (not shown).
  • the longitudinal edges of the continuous strip form the longitudinal edges 4 and 5 of the sheet 1.
  • Sheet 1 is produced from two superimposed films glued to each other, namely a film opaque 6 in bi-oriented polypropylene and a transparent film 7 in non-oriented polyethylene. These two films are glued to each other continuously over the entire extent of the sheet, except in a reinforcement zone 8 of rectangular shape.
  • the reinforcement zone 8 has a front edge 9 adjacent to the edge 2 and parallel to it, two lateral edges 10, 11 neighboring the edges 4 and 5 respectively and parallel to them, and a rear edge 12.
  • a front edge 9 adjacent to the edge 2 and parallel to it
  • two lateral edges 10, 11 neighboring the edges 4 and 5 respectively and parallel to them
  • a rear edge 12 a rear edge 12.
  • the two films 6 and 7 are only glued to one another in a multitude of discrete gluing points 16.
  • the two sheets are free. 'one over the other.
  • the points 16 can be circular and arranged in several rows, staggered from one row to the other.
  • a non-stick varnish 18 is first deposited on the inner face 17 of the film 6, which covers the entire area 8 except points 16 Then, on the same face of the film 6, over the entire extent of the sheet 1, a continuous layer 19 of a conventional adhesive with two or three components is deposited, and the film 7 is applied to this layer of adhesive. Due to the presence of the varnish 18, the film 7, after pressing, only adheres to the film 6, in the zone 8, at the locations devoid of varnish, that is to say at points 16. Outside zone 8, the adhesion of the two films is total.
  • the varnish 18 can be colored so as to appear on the film 6; this facilitates the presence and positioning control of this varnish.
  • the adhesive 19 can be applied in a marked manner, only outside of zone 8 and on the points 16, in which case the varnish 18 is not used.
  • these operations are carried out continuously, in order to obtain the abovementioned continuous strip from which the sheets 1 are cut. As shown in FIG. 3, these cuts are generally made by means of serrated knives.
  • any line crossing the area 8 necessarily meets a location where the two films are independent of each other.
  • the reinforcement zone 8 it is possible on the one hand to cut the sheets 1, along the edges 2 and 3, in parts of the sheet devoid of varnish, and on the other hand also to produce welds in unvarnished parts of the sheet. This ensures the sharpness of the cuts and the reliability of the welds.
  • the reinforcement zone 8 extends throughout the region of the bag, located on either side of the link 22, in which this bag undergoes repeated repeated deformations during the consumption of the packaged product.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
  • Bag Frames (AREA)
EP94402499A 1993-11-04 1994-11-04 Verpackungsverbundfolie und Verpackungsbeutel bestehend aus einer solchen Folie Withdrawn EP0652103A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9313133A FR2711971B1 (fr) 1993-11-04 1993-11-04 Feuille composite d'emballage, et sachet d'emballage constitué à partir d'une telle feuille.
FR9313133 1993-11-04

Publications (1)

Publication Number Publication Date
EP0652103A1 true EP0652103A1 (de) 1995-05-10

Family

ID=9452509

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94402499A Withdrawn EP0652103A1 (de) 1993-11-04 1994-11-04 Verpackungsverbundfolie und Verpackungsbeutel bestehend aus einer solchen Folie

Country Status (2)

Country Link
EP (1) EP0652103A1 (de)
FR (1) FR2711971B1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7508031A (nl) * 1974-07-05 1976-01-07 Rasmussen O B Zeer sterk laminaat van thermoplastische polymeer- folies alsmede werkwijze voor het vervaardigen daarvan.
FR2275377A1 (fr) * 1974-06-20 1976-01-16 Grace W R Ltd Pellicule stratifiee pour l'emballage sous vide
EP0414135A2 (de) * 1989-08-21 1991-02-27 Hänsel Textil GmbH & Co. Verfahren und Vorrichtung zur Herstellung von Kunststoffolien mit rasterförmig aufgedruckten Klebstoffpunkten

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2275377A1 (fr) * 1974-06-20 1976-01-16 Grace W R Ltd Pellicule stratifiee pour l'emballage sous vide
NL7508031A (nl) * 1974-07-05 1976-01-07 Rasmussen O B Zeer sterk laminaat van thermoplastische polymeer- folies alsmede werkwijze voor het vervaardigen daarvan.
EP0414135A2 (de) * 1989-08-21 1991-02-27 Hänsel Textil GmbH & Co. Verfahren und Vorrichtung zur Herstellung von Kunststoffolien mit rasterförmig aufgedruckten Klebstoffpunkten

Also Published As

Publication number Publication date
FR2711971B1 (fr) 1996-01-26
FR2711971A1 (fr) 1995-05-12

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