WO1996010525A1 - Emballage comprenant une base et une feuille de couverture souple - Google Patents

Emballage comprenant une base et une feuille de couverture souple Download PDF

Info

Publication number
WO1996010525A1
WO1996010525A1 PCT/DK1995/000394 DK9500394W WO9610525A1 WO 1996010525 A1 WO1996010525 A1 WO 1996010525A1 DK 9500394 W DK9500394 W DK 9500394W WO 9610525 A1 WO9610525 A1 WO 9610525A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover sheet
package
lower cover
bottom part
slot
Prior art date
Application number
PCT/DK1995/000394
Other languages
English (en)
Inventor
John Hansen
Original Assignee
Danisco Flexible Raackmann A/S
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 Danisco Flexible Raackmann A/S filed Critical Danisco Flexible Raackmann A/S
Priority to AU35620/95A priority Critical patent/AU3562095A/en
Publication of WO1996010525A1 publication Critical patent/WO1996010525A1/fr

Links

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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B65D77/2068—Means for reclosing the cover after its first opening

Definitions

  • a package comprising a bottom part and a flexible cover sheet.
  • the invention relates to a package comprising a bottom part and a flexible cover sheet of plastic sealed to the bottom part along the rim thereof by means of a circumferential sealing line.
  • Danish patent application No. 1524/92 discloses a package comprising a bottom part and a flexible cover part sealed to the bottom part along a circumferential rim thereof so as to form a sealed compartment.
  • the cover part comprises a first cover sheet, sealed to the bottom part along a portion of the rim thereof, and a second cover sheet being peelably sealed to the bottom part along the remaining portion of the rim thereof and to the first cover sheet, and having a gripping member extending beyond the sealing line with the bottom part or with the first cover sheet.
  • the second cover sheet may be completely or partially removed from the package to allow access to the interior thereof. By not completely removing the upper cover sheet, said sheet may be used to reclose the package.
  • the object of the invention is to provide a simple and economical package of the above type, which is user-friendly in the sense that it is easy to open and reclose for storing the contents thereof after a portion thereof has been removed, and which is, further, suitable for mass production.
  • the package according to the invention is characterised in that the lower cover sheet is provided with a transverse, slot-like opening to the interior of the package dividing the lower cover sheet into a major and a minor cover part, said slot-like opening being covered by an upper, flexible plastic cover sheet extending in an overlapping manner onto the two cover parts of the lower cover sheet and being sealed to the lower cover sheet along sealing lines on each side of the slot-like opening and along opposing edge portions between said sealing lines for closing the package, the upper cover sheet being peelably sealed to at least the major cover part of the lower cover sheet and having at least one gripping member in the overlapping portion therewith.
  • the upper cover sheet By gripping about the gripping member, the upper cover sheet may be removed from the major cover part of the lower cover sheet to the slot-like opening in the lower cover part, thus allowing access to the interior of the package through said opening.
  • the package may be reclosed by bringing the peeled portion of the upper cover sheet into abutment with the lower cover sheet and, if necessary, placing the package with the upper cover sheet facing downwards.
  • At least one of the sealing lines for sealing the two cover sheets to each other on each side of the slot-like opening may be coincident with the circumferential seal between the bottom part and the lower cover sheet.
  • both said sealing lines are coincident with the circumferential seal and the upper cover sheet thus extends to the rim of the package, all of the seals of the package may be made in a single sealing operation by means of sealing tools.
  • the upper cover sheet extends to the rim of the package, several adjacent, coherent packages may be manufactured simultaneously by means of a single sheet web forming the upper cover sheet of the multiple adjacent packages. Owing to conside ⁇ rations of space and control, it is advantageous to make use of a single wide sheet web instead of several, narrow sheet webs.
  • a single wide web is particularly advantageous, when said web is printed and is to be registered, i.e. the print on the sheet web is to be placed accurately relative to the bottom part, only a single register control being necessary.
  • existing package machines for this type of packages i.e thermoforming machines, only have a single register control.
  • at least the major cover part of the lower cover sheet may be peelably sealed to the bottom part.
  • it is possible to reclose the package by bringing the major cover part of the lower cover sheet into abutment with the rim of the bottom part and the upper cover sheet into abutment with the lower cover sheet.
  • the slot-like opening may be a slit formed by slitting the lower cover sheet immediately before being placed on the bottom part.
  • this embodiment of the invention is advantageous in that only a single sheet web is used for forming the cover sheet per se, when a multiple of adjacent, coherent packages are manufactured at the same time.
  • the embodiment is particularly advantageous when the lower cover sheet is printed and is to be registered on the bottom part, as only a single register control is required to this object.
  • the slot-like opening in the lower cover sheet may be parallel to one of the pair of sides.
  • the slot-like opening is immediately adjacent one of the sides.
  • This embodiment of the invention is advantageous in that the major cover part of the lower cover sheet is arranged in a protective manner above the packed product, when the upper cover sheet has been peeled, and thus provides optimum protection of the product, while easy access thereto is obtained, whereby said product may be removed from the package without any difficulty.
  • the bottom part may be formed of a flexible plastic sheet.
  • a relatively flexible or semi-rigid bottom part it is naturally preferable to use a relatively flexible or semi-rigid bottom part.
  • a rigid bottom part may obviously also be used.
  • Fig. 1 is a diagrammatic, perspective view of a first embodiment of a package according to the invention
  • Fig. 2 shows the open state of the package in Fig. 1,
  • Fig. 3 is a diagrammatic view of a second embodiment of a package according to the invention.
  • Fig. 4 is a diagrammatic and partly sectional view of three packages according to Fig. 1 and 2 made on a thermoforming machine and still coherent, and
  • Fig. 5 is a diagrammatic side view of the method of simultaneous formation of a multiple of packages according to the invention in a thermoforming machine.
  • a package according to the invention comprises a tray-shaped bottom part 1 being rectangular and comprising a bottom 2, from which two pairs of opposing side walls 3,4, and 5,6 extend upwardly. At their upper end, the side walls continue into a common flange 7 forming the upper rim 8 of the bottom part.
  • a first or lower cover sheet 9 is arranged on the bottom part, said sheet being sealed to the upper rim 8 of the bottom part 1 along a circumferential sealing line 10.
  • the lower cover sheet 9 is divided into a major cover part 12 and a minor cover part 13 by means of a transverse slit 11.
  • the slit 11 is parallel to and arranged immediately adjacent the side wall 3.
  • the lower cover sheet 9 may be sealed to the flange of the bottom part 1 either by means of a fusion seal or by a peel seal.
  • access to the packed product is possible through the opening formed by the slit 11.
  • the major cover part 12 of the cover sheet 9 may be peeled as shown by the arrow 14, whereby a wider opening to the packed product is obtained.
  • a second or upper cover sheet 15 is sealed to the lower cover sheet 9 along a circumferential sealing line 17, in a top view being coincident with the sealing line 10 between the lower cover sheet 9 and the upper rim 8 of the bottom part 1.
  • the seal 17 between the upper cover sheet 15 and the lower cover sheet 9 is peelable.
  • the sealing line 10 extends in such a manner that a gripping member 16 is formed in the overlapping portion of the upper cover sheet with the major cover part 12 of the cover sheet 9.
  • the upper cover sheet 15 may be peeled beyond the slit 11 in the lower cover sheet 9 by gripping about the gripping member 16, thus allowing access to the interior of the package and the packed product (cf. Fig. 2).
  • Fig. 3 illustrates a second embodiment according to the invention comprising a planar, rectangular bottom part 31, for illustrative reason being shown as tray-shap ⁇ ed, and having two pairs of opposing, parallel side edges 33,34,35,36.
  • the bottom part is provided with a lower cover sheet 39 of the same size as the bottom part 31 and being sealed thereto by means of a circumferential sealing line 40 extending along the edges of the bottom part and spaced apart therefrom.
  • the lower cover sheet 39 is divided into a major cover part 42 and a minor cover part 43 by means of a transverse slit 41.
  • the slit 41 is parallel to and arranged adjacent the edge 33 of the bottom part within the circumferential sealing line 40.
  • the lower cover sheet 39 may either be sealed to the bottom part 31 by means of a fusion seal or by means of a peel seal.
  • An upper cover sheet 45 is arranged on the lower cover sheet 39 for covering the slit 41.
  • the upper cover sheet 45 is of essentially the same width as the lower cover sheet 39 between the side edges 35 and 36 of the bottom part 31, and extends outwardly from the side edge 33 of the bottom part 31 beyond the slit 41 in the lower cover sheet 39.
  • the upper cover sheet 45 is peelably sealed to the lower cover sheet 39 along a circumferential sealing line 47 provided with sealing line portions 47a, 47b, 47c, in a top view being coincident with the sealing line 40 between the lower cover sheet 39 and the bottom part 31, and with a transverse sealing line portion 47d extending parallel to the sealing line portion 47a on the opposite side of the slit 41 in the lower cover sheet 39.
  • the transverse sealing line portion 47d is spaced apart from the edge 32 of the upper cover sheet 47 so that a gripping member 46 is provided between said edge 32 and the sealing line portion 47d.
  • the gripping member 46 is used for peeling the upper cover sheet 45, as shown by means of the arrow 48.
  • a bottom web 19 for forming the tray-shaped bottom part 1 is advanced through a forming station 20, in which the web is heated and three, adjacent, tray-shaped bottom parts 1 are formed. Then the formed web passes a filling station 21, in which the product is filled in the tray-shaped bottom parts 1. Subsequent hereto, a lower cover web 22, forming the lower cover sheet 9, is placed onto the formed bottom web. Prior to being placed on the bottom web, the lower cover web 22 is slit at three points to form the longitudinal slits 11 thereof. Simultaneously or immediately after the lower cover web 22 is brought into abutment with the bottom web, an upper cover web 23 is brought into abutment with the lower cover web 22.
  • the three webs 19, 22, 23 are jointly passed into a sealing station, in which the bottom web 19 is sealed to the lower cover web 22, the cover web being sealed to the lower cover web 22 at the same time, for simultaneous formation of the circumferential seals 10,17 on the three adjacent packages.
  • the three packages are separated from the web (shown by the line 28 in Fig. 4) by means of a knife 26, whereafter the three coherent packages are separated from each other (the lines 29 and 30 in Fig. 3) by means of longitudinal knives 27.
  • the package according to Fig. 3 is made in a manner corresponding to the package according Fig. 1 and 2 on a thermoforming machine except for the following modifications:
  • the bottom part is planar, it is not thermoformed or deepdrawn.
  • three separate upper cover webs are used to form the upper cover sheet of the packages.
  • the three cover webs are sealed to the lower cover web to form the transverse sealing line portion 47b immediately before or subsequent to slitting of the lower cover web for formation of the slit 41 in the lower cover sheet 39.
  • a PA/PE-laminate or a PET/PE-laminate may be used for the upper cover sheet and a PE sheet for the lower cover sheet, and a PA/PE-laminate for the bottom sheet, the layers of the laminates being stated in the order, in which they appear, when seen from the exterior of the package to its interior.
  • a copolymer of PP, PE/PP/PE-laminate may be used for the lower and upper cover sheet and a PA/PE-laminate or a PET-laminate for the bottom part.
  • said laminates may comprise various barrier layers, optionally in form of metallization.

Landscapes

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

Abstract

Emballage comprenant une base (1) et une feuille de couverture inférieure souple (9), en matière plastique, soudée à la base (1), le long du bord (8) de cette dernière par l'intermédiaire d'une ligne de soudage périphérique (10). Cette feuille de couverture inférieure (9) est pourvue d'une ouverture transversale (11) en forme de fente, permettant d'accéder à l'intérieur de l'emballage. Cette ouverture (11) divise la feuille de couverture (9) en parties de couverture principale et secondaire (12, 13). L'ouverture est en outre recouverte par une feuille de couverture supérieure (15) en matière plastique, s'étendant à chevauchement sur les deux parties de couverture (12, 13) de la feuille inférieure (9). La feuille supérieure (15) est soudée à la feuille inférieure (9) le long de lignes de soudage (10) ménagées de chaque côté de l'ouverture en forme de fente (11) et le long de parties marginales opposées entre lesdites lignes de soudage afin de fermer l'emballage. La feuille de couverture supérieure (15) est soudée de manière détachable au moins à la partie de couverture principale de la feuille inférieure (9), et est pourvue d'un élément de préhension (16) dans la partie qui chevauche cette dernière.
PCT/DK1995/000394 1994-09-30 1995-09-29 Emballage comprenant une base et une feuille de couverture souple WO1996010525A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU35620/95A AU3562095A (en) 1994-09-30 1995-09-29 A package comprising a bottom part and a flexible cover sheet

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK1133/94 1994-09-30
DK113394A DK113394A (da) 1994-09-30 1994-09-30 Emballage omfattende en underdel og en fleksibel afdækningsfolie

Publications (1)

Publication Number Publication Date
WO1996010525A1 true WO1996010525A1 (fr) 1996-04-11

Family

ID=8101394

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1995/000394 WO1996010525A1 (fr) 1994-09-30 1995-09-29 Emballage comprenant une base et une feuille de couverture souple

Country Status (3)

Country Link
AU (1) AU3562095A (fr)
DK (1) DK113394A (fr)
WO (1) WO1996010525A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH565090A5 (fr) * 1973-05-28 1975-08-15 Gundermann Dr Unionpack Abfuel
WO1981002416A1 (fr) * 1980-02-21 1981-09-03 Multivac Haggenmueller Kg Emballage pourvu d'un couvercle a plusieurs couches
US5054618A (en) * 1987-07-24 1991-10-08 Kim Myun H Sealed container with tear opening feature
WO1993000274A1 (fr) * 1991-06-25 1993-01-07 Schur International A/S Emballage refermable, par exemple pour tranches de viande
WO1994014677A1 (fr) * 1992-12-21 1994-07-07 Raackmanns Fabriker A/S Recipient comportant un element inferieur en forme de plateau et un element servant de couvercle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH565090A5 (fr) * 1973-05-28 1975-08-15 Gundermann Dr Unionpack Abfuel
WO1981002416A1 (fr) * 1980-02-21 1981-09-03 Multivac Haggenmueller Kg Emballage pourvu d'un couvercle a plusieurs couches
US5054618A (en) * 1987-07-24 1991-10-08 Kim Myun H Sealed container with tear opening feature
WO1993000274A1 (fr) * 1991-06-25 1993-01-07 Schur International A/S Emballage refermable, par exemple pour tranches de viande
WO1994014677A1 (fr) * 1992-12-21 1994-07-07 Raackmanns Fabriker A/S Recipient comportant un element inferieur en forme de plateau et un element servant de couvercle

Also Published As

Publication number Publication date
DK113394A (da) 1996-03-31
AU3562095A (en) 1996-04-26

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