EP0511171A1 - Tear device for automatic cutting of shrink-wrap packaging films - Google Patents

Tear device for automatic cutting of shrink-wrap packaging films Download PDF

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Publication number
EP0511171A1
EP0511171A1 EP92830074A EP92830074A EP0511171A1 EP 0511171 A1 EP0511171 A1 EP 0511171A1 EP 92830074 A EP92830074 A EP 92830074A EP 92830074 A EP92830074 A EP 92830074A EP 0511171 A1 EP0511171 A1 EP 0511171A1
Authority
EP
European Patent Office
Prior art keywords
shrink
film
automatic cutting
wrap
packaging films
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Withdrawn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
EP92830074A
Other languages
German (de)
French (fr)
Inventor
Caffeo Dangher
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.)
ECOBAGS Sas
Original Assignee
ECOBAGS Sas
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 ECOBAGS Sas filed Critical ECOBAGS Sas
Publication of EP0511171A1 publication Critical patent/EP0511171A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B65B61/182—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying tear-strips or tear-tapes
    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/02—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for perforating, scoring, slitting, or applying code or date marks on material prior to packaging
    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B50/812—Applying tabs, patches, strips or strings on blanks or webs
    • B31B50/8125—Applying strips or strings, e.g. tear strips or strings

Definitions

  • the present invention relates to a device capable of tearing the shrink-wrap film widely used for the packaging of various products.
  • shrink-wrapping is widely employed by the food industry and by other industries in order to make up sets of individual packages which, all wrapped up in a single shrink-wrapping plastic film, can thus be easily and safely transported.
  • Figure 1 is a front view of the shrink-wrap film precutting and creasing station, which is part of the automatic packaging line.
  • Figure 2 is a top view of the film at outlet of the precutting and creasing station.
  • Figure 3 is a view of the package showing the tear device as per the present invention.
  • reference numeral 1 shows the cutting and sealing bar
  • 2 is the striker plate
  • 3 is the film roll
  • 4 is the unwound flat film
  • 5 is the double creasing made by bar (1) by means of heat applied to the particular area concerned
  • 6 is the film portion cut off from the unwound film (4) at crease (5) so as to create two tabs 7 which can be easily pulled by the operator to easily tear the packaging film along the crease, namely the point of the film wrapping weakened by the sealing line.
  • 8 shows the individual packs
  • 9 is the characteristic folding of the wrapping film in the front and in the back of the package, which allows the tabs (7) to be easily pulled by the operator.

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

Abstract

The present invention relates to a tear device consisting of a tear-line guided double crease 5 and of two tabs 7 obtained by cutting away a portion of the wrapping film 4 before heat sealing which, when appropriately pulled, are capable of tearing the film along the creasing lines.

Description

  • The present invention relates to a device capable of tearing the shrink-wrap film widely used for the packaging of various products.
    As is well known, shrink-wrapping is widely employed by the food industry and by other industries in order to make up sets of individual packages which, all wrapped up in a single shrink-wrapping plastic film, can thus be easily and safely transported.
  • It is also known that the personnel in charge of unpacking products encounter considerable difficulty in cutting the film which, given its consistency, requires the use of sharp cutting tools representing a risk not only for the operator but also for the integrity of the packaged product.
    This is especially the case with food products which can be easily damaged by the cutting tool and thus lose their organoleptic properties so that the product becomes unsaleable.
    A common example is given by vacuum-packed coffee and by liquid-containing treated paper and soft plastic packs in general.
  • The invention which is described here is designed to overcome these disadvantages. The device according to this invention is obtained by pre-cutting and creasing the film so that operator can easily tear the film open by pulling an appropriate tab without damaging the product.
    One embodiment of the invention will now be described with reference to the accompanying drawings in which:
  • Figure 1, is a front view of the shrink-wrap film precutting and creasing station, which is part of the automatic packaging line.
  • Figure 2, is a top view of the film at outlet of the precutting and creasing station.
  • Figure 3, is a view of the package showing the tear device as per the present invention.
  • Referring now in detail to the drawings, reference numeral 1 shows the cutting and sealing bar, 2 is the striker plate, 3 is the film roll, 4 is the unwound flat film, 5 is the double creasing made by bar (1) by means of heat applied to the particular area concerned, 6 is the film portion cut off from the unwound film (4) at crease (5) so as to create two tabs 7 which can be easily pulled by the operator to easily tear the packaging film along the crease, namely the point of the film wrapping weakened by the sealing line. 8 shows the individual packs, 9 is the characteristic folding of the wrapping film in the front and in the back of the package, which allows the tabs (7) to be easily pulled by the operator.
  • Having thus described the invention, it is not intended that it be so limited as changes in dimensions, materials and shapes may be readily made therein without departing from the scope of the invention. Accordingly, it is intended that the description and accompanying drawings be interpreted as illustrative and not in a limiting sense.

Claims (3)

  1. A TEAR DEVICE FOR AUTOMATIC CUTTING OF SHRINK-WRAP PACKAGING FILMS comprinsing two or more tear-line creases (5), applied transversally to the wrapping film (4) by means of sealing prior to package being introduced into the oven, characterized by the fact that the two ends of said creases continue beyond the wrapping film itself having the film been duly cut (6) in order to form two pull tabs (7) for the purpose of easily tearing open the film.
  2. A TEAR DEVICE FOR AUTOMATIC CUTTING OF SHRINK-WRAP PACKAGING FILMS as set forth in claim 1, characterized by the fact that the shrink-wrap film, cut to appropriate dimensions as per packaging requirements, can be made to wrap up a set of single boxes, which together make up the package, so that the double creasing comes to be located in an easily accessible part of the package; such as along side, and especially so that the pull tabs (7) may protrude form the edge of the package.
  3. A TEAR DEVICE FOR AUTOMATIC CUTTING OF SHRINK-WRAP PACKAGING FILMS as set forth in claims 1 and 2 above, characterized by the fact that the invention is essentially as described and/or illustrated herein for the specified purposes.
EP92830074A 1991-04-23 1992-02-21 Tear device for automatic cutting of shrink-wrap packaging films Withdrawn EP0511171A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO910069U 1991-04-23
ITBO910069U IT224720Z2 (en) 1991-04-23 1991-04-23 Tear-off device for the automatic opening of shrink film.

Publications (1)

Publication Number Publication Date
EP0511171A1 true EP0511171A1 (en) 1992-10-28

Family

ID=11337303

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92830074A Withdrawn EP0511171A1 (en) 1991-04-23 1992-02-21 Tear device for automatic cutting of shrink-wrap packaging films

Country Status (2)

Country Link
EP (1) EP0511171A1 (en)
IT (1) IT224720Z2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6889483B2 (en) 2002-10-31 2005-05-10 Cryovac, Inc. Easy-opening feature for flexible packages and process and apparatus for forming same
US7527839B2 (en) 2003-02-20 2009-05-05 Curwood, Inc. Easy open heat-shrinkable packaging

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3273302A (en) * 1963-12-16 1966-09-20 Container Corp Method of forming shrink film package
US3409206A (en) * 1967-03-17 1968-11-05 Continental Can Co Container blank, body, and method of forming
GB2073133A (en) * 1980-04-07 1981-10-14 Laurel Bank Machine Co Coin wrapping paper
GB2156303A (en) * 1984-03-27 1985-10-09 Neusiedler Ag A packing for a stack of sheets
EP0395249A1 (en) * 1989-04-24 1990-10-31 Philip Morris Products Inc. Container wrapper with integral tear tape, and methods and apparatus for making same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3273302A (en) * 1963-12-16 1966-09-20 Container Corp Method of forming shrink film package
US3409206A (en) * 1967-03-17 1968-11-05 Continental Can Co Container blank, body, and method of forming
GB2073133A (en) * 1980-04-07 1981-10-14 Laurel Bank Machine Co Coin wrapping paper
GB2156303A (en) * 1984-03-27 1985-10-09 Neusiedler Ag A packing for a stack of sheets
EP0395249A1 (en) * 1989-04-24 1990-10-31 Philip Morris Products Inc. Container wrapper with integral tear tape, and methods and apparatus for making same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6889483B2 (en) 2002-10-31 2005-05-10 Cryovac, Inc. Easy-opening feature for flexible packages and process and apparatus for forming same
US7021827B2 (en) 2002-10-31 2006-04-04 Cryovac, Inc. Easy-opening feature for flexible packages and process and apparatus for forming same
US7527839B2 (en) 2003-02-20 2009-05-05 Curwood, Inc. Easy open heat-shrinkable packaging

Also Published As

Publication number Publication date
ITBO910069U1 (en) 1992-10-23
IT224720Z2 (en) 1996-06-27
ITBO910069V0 (en) 1991-04-23

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19930429