WO1998022281A1 - Twist packaging - Google Patents

Twist packaging Download PDF

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Publication number
WO1998022281A1
WO1998022281A1 PCT/AT1997/000248 AT9700248W WO9822281A1 WO 1998022281 A1 WO1998022281 A1 WO 1998022281A1 AT 9700248 W AT9700248 W AT 9700248W WO 9822281 A1 WO9822281 A1 WO 9822281A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
styrene
packaging
packaging material
weight
Prior art date
Application number
PCT/AT1997/000248
Other languages
German (de)
French (fr)
Inventor
Olle Mannertorp
Erich Kreutzer
Original Assignee
Teich Aktiengesellschaft
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 Teich Aktiengesellschaft filed Critical Teich Aktiengesellschaft
Priority to PL97327926A priority Critical patent/PL327926A1/en
Priority to BR9707156A priority patent/BR9707156A/en
Priority to AU49342/97A priority patent/AU4934297A/en
Priority to EE9800217A priority patent/EE9800217A/en
Priority to EP97911952A priority patent/EP0885120A1/en
Publication of WO1998022281A1 publication Critical patent/WO1998022281A1/en
Priority to NO983296A priority patent/NO983296L/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/10—Polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2325/00—Polymers of vinyl-aromatic compounds, e.g. polystyrene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging

Definitions

  • the invention relates to a packaging material for twist packaging and a twist packaging consisting of this packaging material.
  • a known way of closing full wraps for packaging purposes, in particular of small packaging goods such as candy, is twisting or twisting.
  • the packaging material is wrapped in the packaging material and then closed on one or both sides by twisting the packaging material.
  • twist packs it is necessary that the packaging material is rotatable, that is twistable, on the one hand, and maintains its screwed-in shape on the other hand. This is the only way to ensure that the goods to be packaged are not released from the packaging by automatically opening the film during transport and storage.
  • This twist behavior is either due to high surface friction, e.g. with polypropylene (PP) and / or by breaking open the internal material structure, e.g. with cellophane.
  • PP polypropylene
  • the object of the invention is therefore to provide a packaging material with satisfactory twist behavior and at the same time good machinability.
  • a multilayer packaging material for twist packaging produced by coextrusion which consists of at least one layer A, which is formed from a polypropylene-containing plastic, and at least one layer B, which contains a styrene / styrene-butadiene copolymer blend .
  • the layers A preferably adjoin the layer B on both sides.
  • the packaging material according to the invention also has the advantages that layer A contains a sealable polypropylene copolymer and layer B contains 15-25% by weight of styrene and 75-85% by weight of styrene-butadiene copolymer based on 100% by weight. of the total weight of layer B.
  • the invention further relates to a twist packaging for lumpy packaging goods such as candies, which can be produced from the aforementioned packaging material.
  • layers A are attached to the layer B on both sides by coextrusion, so that a multilayer composite with the structure A-B-A is formed.
  • the layer thicknesses are selected from the following percentage ranges, the sum of which must each amount to 100% of the total layer thickness.
  • the materials of layer A are polypropylene (PP) -containing plastics or blends.
  • the PP can be both a homopolymer and a copolymer or a mixture (blend) thereof.
  • a copolymer provides the advantage of additionally to ⁇ sealability against itself, against a PP homo-polymer or PP blends.
  • the layer composition according to A can be modified by adding additives.
  • Layer B consists of a styrene / styrene-butadiene copolymer blend, the so-called “general purpose polystyrene” (crystal styrene) being suitable as the styrene component.
  • Polystyrene with a molecular weight of greater than 200,000 and a molecular weight distribution of 2-3 is particularly preferred.
  • Suitable styrene-butadiene copolymers are styrene-butadiene-styrene (SBS) and styrene-butadiene rubber (SBR) types with 10-90% by weight of styrene or 10-90% by weight of butadiene on the total copolymer weight. Very good results can be achieved with a butadiene content of 10 to 36% by weight.
  • SBS styrene-butadiene-styrene
  • SBR styrene-butadiene rubber
  • a blend of 15-25% by weight of high molecular weight styrene and a styrene-butadiene copolymer fraction of 75-85% by weight is particularly preferred.
  • the sum of the individual layers must total 100% of the total layer thickness. Although these multilayer composites have a high level of rigidity, they are more difficult to manufacture. To improve the adhesion of the layers to one another, adhesion promoters such as EVA, EAA, etc. can be used in a small thickness.
  • the outermost layer of material is formed by the PP-containing layer A.
  • the water and fat resistance and the decorative design are provided by printing or metallizing the packaging material according to the invention.

Landscapes

  • Laminated Bodies (AREA)
  • Wrappers (AREA)

Abstract

The invention relates to a multilayer packaging material for twist packing, produced by coextrusion. It consists of at least one A layer, which is formed of a synthetic material containing polypropylene, and at least one B layer, which contains a styrene/styrene-butadiene-copolymer blend.

Description

Twistverpackunq Technisches Gebiet Twist packaging Technical field
Die Erfindung betrifft ein Verpackungsmaterial für Twistverpackungen sowie eine aus diesem Verpackungsmaterial bestehende Twistverpackung.The invention relates to a packaging material for twist packaging and a twist packaging consisting of this packaging material.
Stand der TechnikState of the art
Eine bekannte Art des Verschlusses von Volleinschlägen für Verpackungszwecke, insbesondere von kleinen Verpackungsgütern wie Bonbons, ist das Eindrehen oder Twisten.A known way of closing full wraps for packaging purposes, in particular of small packaging goods such as candy, is twisting or twisting.
Dabei wird das Verpackungsgut im Verpackungsmaterial eingeschlagen und anschließend ein- oder beidseitig durch seitliches Drehen (Twisten) des Verpackungsmaterials verschlossen. Bei diesen Twistverpackungen ist es jedoch notwendig, daß das Verpackungsmaterial einerseits drehbar, also twistbar ist und andererseits seine eingedrehte Form beibehält. Nur so ist es gewährleistet, daß das Verpackungsgut bei Transport und Lagerung nicht durch selbsttätiges Aufdrehen der Folie aus der Verpackung herausge- löst wird.The packaging material is wrapped in the packaging material and then closed on one or both sides by twisting the packaging material. With these twist packs, however, it is necessary that the packaging material is rotatable, that is twistable, on the one hand, and maintains its screwed-in shape on the other hand. This is the only way to ensure that the goods to be packaged are not released from the packaging by automatically opening the film during transport and storage.
Dieses Twistverhalten wird entweder durch hohe Oberflächenreibung, z.B. bei Polypropylen (PP) und/oder durch Aufbrechen der inneren Materialstruktur wie z.B. bei Cellophan bewirkt.This twist behavior is either due to high surface friction, e.g. with polypropylene (PP) and / or by breaking open the internal material structure, e.g. with cellophane.
Andererseits benötigt man gut gleitende Oberflächen mit geringer Reibung für die Maschinengängigkeit des Verpackungsmaterials, beispielsweise beim Herstellungsprozeß. Bekannte PP-Materialien haben deswegen oft eine gleitfähige Überlackierung, welche für die Twistung im Twistbereich ausgespart ist.On the other hand, smooth sliding surfaces with low friction are required for the packaging material to be machinable, for example in the manufacturing process. Known PP materials therefore often have a lubricious overcoating, which is left out for twisting in the twist area.
Darstellung der ErfindungPresentation of the invention
Aufgabe der Erfindung ist es daher, ein Verpackungsmaterial mit zufriedenstellendem Twistverhalten bei gleichzeitig guter Maschinengängigkeit bereitzustellen. Erfindungsgemäß wird ein durch Coextrusion hergestelltes mehrschichtiges Verpackungsmaterial für Twistverpackungen vorge- schlagen, welches aus zumindestens einer Schicht A, welche aus einem Polypropylen-hältigen Kunststoff gebildet wird und zumindestens einer Schicht B, welche ein Styrol/Styrol-Butadien- Copolymer-Blend enthält, besteht.The object of the invention is therefore to provide a packaging material with satisfactory twist behavior and at the same time good machinability. According to the invention, a multilayer packaging material for twist packaging produced by coextrusion is proposed, which consists of at least one layer A, which is formed from a polypropylene-containing plastic, and at least one layer B, which contains a styrene / styrene-butadiene copolymer blend .
Vorzugsweise grenzen an die Schicht B beidseitig die Schichten A an.The layers A preferably adjoin the layer B on both sides.
Das erfindungsgemäße Verpackungsmaterial weist ferner die Vorteile auf, daß die Schicht A ein siegelfähiges Polypropylen- Copolymer enthält und die Schicht B 15 - 25 Gew.% an Styrol und 75 - 85 Gew.% an Styrol-Butadien-Copolymer bezogen auf 100 Gew.% des Gesamtgewichtes der Schicht B aufweist.The packaging material according to the invention also has the advantages that layer A contains a sealable polypropylene copolymer and layer B contains 15-25% by weight of styrene and 75-85% by weight of styrene-butadiene copolymer based on 100% by weight. of the total weight of layer B.
Die Erfindung betrifft ferner eine Twistverpackung für stückige Verpackungsgüter wie Bonbons, welche aus dem vorgenannten Verpackungsmaterial herstellbar ist.The invention further relates to a twist packaging for lumpy packaging goods such as candies, which can be produced from the aforementioned packaging material.
Ein Weg zur Ausführung der ErfindungOne way of carrying out the invention
Es werden beispielsweise an die Schicht B beidseitig durch Coextrusion die Schichten A angebracht, sodaß ein Mehrschichtverbund mit dem Aufbau A-B-A entsteht.For example, layers A are attached to the layer B on both sides by coextrusion, so that a multilayer composite with the structure A-B-A is formed.
Die Schichtdicken werden aus folgenden prozentuellen Bereichen ausgewählt, wobei deren Summe jeweils 100% der Gesamtschichtdicke ergeben muß.The layer thicknesses are selected from the following percentage ranges, the sum of which must each amount to 100% of the total layer thickness.
A: 15 - 35 %A: 15 - 35%
B: 30 - 60 % A: 15 - 35 %B: 30 - 60% A: 15 - 35%
Die Materialien der Schicht A sind Polypropylen (PP) -hältige Kunststoffe bzw. Blends. Das PP kann sowohl ein Homo-Polymer als auch ein Copolymer sein oder auch eine Mischung (Blend) daraus. Ein Copolymer bietet zu¬ sätzlich den Vorteil der Siegelbarkeit gegen sich selbst, gegen ein PP-Homo-Polymer oder PP-Blends.The materials of layer A are polypropylene (PP) -containing plastics or blends. The PP can be both a homopolymer and a copolymer or a mixture (blend) thereof. A copolymer provides the advantage of additionally to ¬ sealability against itself, against a PP homo-polymer or PP blends.
Die Schichtzusammensetzung gemäß A kann durch Zusatz von Additiven modifiziert werden.The layer composition according to A can be modified by adding additives.
Die Schicht B besteht aus einem Styrol/Styrol-Butadien-Copolymer Blend, wobei sich als Styrol-Komponente das sogenannte "General Purpose Polystyrene" (Crystal-Styrene) eignet. Besonders bevorzugt ist Polystyrol mit einem Molekulargewicht von größer 200.000 und einer Molekular-Gewichtsverteilung von 2 - 3.Layer B consists of a styrene / styrene-butadiene copolymer blend, the so-called "general purpose polystyrene" (crystal styrene) being suitable as the styrene component. Polystyrene with a molecular weight of greater than 200,000 and a molecular weight distribution of 2-3 is particularly preferred.
Als Styrol-Butadien-Copolymere eignen sich Styrol-Butadien- Styrol-(SBS) und Styrol-Butadien-Rubber (SBR) -Typen mit 10 - 90 Gew.% Styrol-Anteil bzw. 10 - 90 Gew.% Butadien-Anteil bezogen auf das gesamte Copolymergewicht . Sehr gute Ergebnise lassen sich mit einem Butadien-Anteil von 10 bis 36 Gew.% erzielen.Suitable styrene-butadiene copolymers are styrene-butadiene-styrene (SBS) and styrene-butadiene rubber (SBR) types with 10-90% by weight of styrene or 10-90% by weight of butadiene on the total copolymer weight. Very good results can be achieved with a butadiene content of 10 to 36% by weight.
Besonders bevorzugt ist ein Blend aus 15 - 25 Gew.% hochmolekularem Styrol und einem Styrol-Butadien-Copolymer-Anteil von 75 - 85 Gew.%.A blend of 15-25% by weight of high molecular weight styrene and a styrene-butadiene copolymer fraction of 75-85% by weight is particularly preferred.
Es sind auch mehrschichtige Kombinationen z.B. A-B-A-B-A technisch möglich, in welchen die Schichtdickenverteilung wie folgt ist:There are also multi-layer combinations e.g. A-B-A-B-A is technically possible, in which the layer thickness distribution is as follows:
A: 13 - 23 % B: 15 - 30 % A: 14 - 24 % B: 15 - 30 % A: 13 - 23%A: 13 - 23% B: 15 - 30% A: 14 - 24% B: 15 - 30% A: 13 - 23%
Die Summe der Einzellagen muß jeweils 100% der Gesamtschichtdicke ergeben. Diese Mehrschichtverbunde weisen zwar eine hohe Steifigkeit auf, sind jedoch schwieriger herstellbar. Zur Verbesserung der Haftung der Schichten zueinander können Haftvermittler wie z.B. EVA, EAA, etc. in geringer Dicke eingesetzt werden.The sum of the individual layers must total 100% of the total layer thickness. Although these multilayer composites have a high level of rigidity, they are more difficult to manufacture. To improve the adhesion of the layers to one another, adhesion promoters such as EVA, EAA, etc. can be used in a small thickness.
Wesentlich bei der Herstellung des erfindungsgemäßen mehrschich¬ tigen Verpackungsmaterials ist, daß die äußerste Materiallage durch die PP-hältige Schicht A ausgebildet ist. Dadurch sind die Wasser- und Fettbeständigkeit sowie die dekorative Ausgestaltung durch Bedrucken oder Metallisieren des erfindungsgemäßen Verpak- kungsmaterials gegeben.It is essential in the production of the inventive mehrschich ¬ term packaging material, that the outermost layer of material is formed by the PP-containing layer A. As a result, the water and fat resistance and the decorative design are provided by printing or metallizing the packaging material according to the invention.
Zur Überprüfung der Eigenschaften des erfindungsgemäßen Ver- packungsmaterials beim Einwickeln von Bonbons wurden mit einer Bonboneinwickelmaschine, wie sie in "Verpacken mit Kunststoffen", Seite 231/232 (Günther Kühne, Carl Hanser Verlag München 1974) beschrieben wird, 5000 Bonbons einzeln durch Dreheinschlag (Twisten) verpackt. Die verdrillten Folienabschnitte zeigten ein gutes Twistverhalten, welches durch die Schicht B bewirkt wird, sodaß sich die Verpackung durch eigenständiges Aufdrehen entgegen der Verdrillungsrichtung nicht von selbst öffnete. Andererseits ließ sich die Verpackung leicht öffnen, um den verpackten Inhalt zu entnehmen, was auf die geringe Oberflächenreibung der Schicht A zurückzuführen ist. Ferner gewährleistet die Schicht A die zufriedenstellende Verarbeitbarkeit bei der Herstellung der Twistverpackung. To check the properties of the packaging material according to the invention when wrapping candies, 5000 candies were individually wrapped with a candy wrapping machine as described in "Packaging with plastics", page 231/232 (Günther Kühne, Carl Hanser Verlag Munich 1974) ( Twists) packed. The twisted film sections showed good twist behavior, which is caused by layer B, so that the packaging did not open by itself when it was unscrewed against the direction of twisting. On the other hand, the packaging could be opened easily to remove the packaged contents, which is due to the low surface friction of layer A. Layer A also ensures satisfactory processability in the production of the twist packaging.

Claims

Patentansprüche ; Claims;
1. Durch Coextrusion hergestelltes, mehrschichtiges Verpak- kungsmaterial für Twistverpackungen bestehend aus zumindestens einer Schicht A, welche aus einem Polypropylen- hältigen Kunststoff gebildet wird und zumindestens einer Schicht B, welche ein Styrol/Styrol-Butadien-Copolymer- Blend enthält.1. Coextrusion-produced, multi-layer packaging material for twist packaging consisting of at least one layer A, which is formed from a polypropylene-containing plastic, and at least one layer B, which contains a styrene / styrene-butadiene copolymer blend.
2. Verpackungsmaterial nach Anspruch 1, dadurch gekennzeichnet, daß an die Schicht B beidseitig die Schichten A angrenzen.2. Packaging material according to claim 1, characterized in that the layers B are adjacent to the layer B on both sides.
3. Verpackungsmaterial nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Schicht A ein siegelfähiges Polypropylen- Copolymer enthält.3. Packaging material according to claim 1 or 2, characterized in that the layer A contains a sealable polypropylene copolymer.
4. Verpackungsmaterial nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Schicht B 15 - 25 Gew.% an Styrol und 75 - 85 Gew.% an Styrol-Butadien-Copolymer bezogen auf 100 Gew.% des Gesamtgewichtes der Schicht B aufweist .4. Packaging material according to one of claims 1 to 3, characterized in that the layer B 15-25% by weight of styrene and 75-85% by weight of styrene-butadiene copolymer based on 100% by weight of the total weight of layer B. having .
Twistverpackung für stückige Verpackungsgüter wie Bonbons, dadurch gekennzeichnet, daß sie aus einem Verpackungsmaterial gemäß einem der Ansprüche 1 - 4 herstellbar ist. Twist packaging for lumpy packaging goods such as candies, characterized in that it can be produced from a packaging material according to one of claims 1-4.
PCT/AT1997/000248 1996-11-18 1997-11-18 Twist packaging WO1998022281A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PL97327926A PL327926A1 (en) 1996-11-18 1997-11-18 Screwed together package
BR9707156A BR9707156A (en) 1996-11-18 1997-11-18 Twist packaging
AU49342/97A AU4934297A (en) 1996-11-18 1997-11-18 Twist packaging
EE9800217A EE9800217A (en) 1996-11-18 1997-11-18 Twist-pack
EP97911952A EP0885120A1 (en) 1996-11-18 1997-11-18 Twist packaging
NO983296A NO983296L (en) 1996-11-18 1998-07-16 Turn-packaging

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0201096A AT405628B (en) 1996-11-18 1996-11-18 USE OF A MULTI-LAYER PACKAGING MATERIAL PRODUCED BY COEXTRUSION FOR TWIST PACKAGING
ATA2010/96 1996-11-18

Publications (1)

Publication Number Publication Date
WO1998022281A1 true WO1998022281A1 (en) 1998-05-28

Family

ID=3525895

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1997/000248 WO1998022281A1 (en) 1996-11-18 1997-11-18 Twist packaging

Country Status (9)

Country Link
EP (1) EP0885120A1 (en)
AT (1) AT405628B (en)
AU (1) AU4934297A (en)
BR (1) BR9707156A (en)
CA (1) CA2243299A1 (en)
EE (1) EE9800217A (en)
NO (1) NO983296L (en)
PL (1) PL327926A1 (en)
WO (1) WO1998022281A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002062576A1 (en) * 2001-02-05 2002-08-15 Nordenia Deutschland Gronau Gmbh Packaging film, in particular twist-wrapping film and method for production thereof
WO2002066247A1 (en) * 2001-02-17 2002-08-29 Nordenia Deutschland Gronau Gmbh Labelling film, method for production and use thereof
WO2003004268A1 (en) * 2001-07-04 2003-01-16 Nova-Plast S.R.L. Use of a multilayer film material for packaging, multilayer film material and wrapper capable of being closed by twisting
EP1419975A2 (en) * 2002-11-14 2004-05-19 Alcan Packaging Italia S.r.l. Package particularly for packaging food products
WO2007058783A1 (en) * 2005-11-15 2007-05-24 Dow Global Technologies Inc. Oriented multi-layer shrink labels
DE112008001811T5 (en) 2007-07-16 2010-07-01 Rkw Se Foils for label material

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Publication number Priority date Publication date Assignee Title
GB993981A (en) * 1961-10-10 1965-06-02 William Robert Brown Improvements in or relating to twist sealable sheet material and container, and method of making the same
DE7441421U (en) * 1974-12-12 1975-04-10 Ebert Kg Wrapper for sweets and the like
JPS5119079A (en) * 1974-08-09 1976-02-16 Sumitomo Bakelite Co FUKUGO FUIRUMUNAISHISHIITO
DE3611341A1 (en) * 1986-04-04 1987-10-08 Hoechst Ag OPAQUE FILM FOR THE SWEET WRAP
DE9111671U1 (en) * 1991-09-19 1991-11-14 Ebert Folien Ag, 6200 Wiesbaden, De
EP0627305A2 (en) * 1993-05-29 1994-12-07 Hoechst Aktiengesellschaft Biaxially oriented polypropylene multilayer film containing a resin, its process of fabrication and its use

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JPS5957748A (en) * 1982-09-29 1984-04-03 電気化学工業株式会社 Coextruded laminated sheet
IT1251530B (en) * 1991-10-31 1995-05-16 Enichem Polimeri THERMOPLASTIC MULTI-LAYER COUPLED

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Publication number Priority date Publication date Assignee Title
GB993981A (en) * 1961-10-10 1965-06-02 William Robert Brown Improvements in or relating to twist sealable sheet material and container, and method of making the same
JPS5119079A (en) * 1974-08-09 1976-02-16 Sumitomo Bakelite Co FUKUGO FUIRUMUNAISHISHIITO
DE7441421U (en) * 1974-12-12 1975-04-10 Ebert Kg Wrapper for sweets and the like
DE3611341A1 (en) * 1986-04-04 1987-10-08 Hoechst Ag OPAQUE FILM FOR THE SWEET WRAP
DE9111671U1 (en) * 1991-09-19 1991-11-14 Ebert Folien Ag, 6200 Wiesbaden, De
EP0627305A2 (en) * 1993-05-29 1994-12-07 Hoechst Aktiengesellschaft Biaxially oriented polypropylene multilayer film containing a resin, its process of fabrication and its use

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* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 7614, Derwent World Patents Index; Class A18, AN 76-25055X, XP002052914 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002062576A1 (en) * 2001-02-05 2002-08-15 Nordenia Deutschland Gronau Gmbh Packaging film, in particular twist-wrapping film and method for production thereof
WO2002066247A1 (en) * 2001-02-17 2002-08-29 Nordenia Deutschland Gronau Gmbh Labelling film, method for production and use thereof
US6783864B2 (en) 2001-02-17 2004-08-31 Nordenia Deutschland Gronau Gmbh Labeling film, method for production and use thereof
WO2003004268A1 (en) * 2001-07-04 2003-01-16 Nova-Plast S.R.L. Use of a multilayer film material for packaging, multilayer film material and wrapper capable of being closed by twisting
EP1419975A2 (en) * 2002-11-14 2004-05-19 Alcan Packaging Italia S.r.l. Package particularly for packaging food products
EP1419975A3 (en) * 2002-11-14 2005-03-30 Alcan Packaging Italia S.r.l. Package particularly for packaging food products
US7128210B2 (en) 2002-11-14 2006-10-31 Alcan Packaging Italia S.R.L. Package particularly for packaging food products
WO2007058783A1 (en) * 2005-11-15 2007-05-24 Dow Global Technologies Inc. Oriented multi-layer shrink labels
US8541077B2 (en) 2005-11-15 2013-09-24 Dow Global Technologies Llc Oriented multi-layer shrink labels
DE112008001811T5 (en) 2007-07-16 2010-07-01 Rkw Se Foils for label material

Also Published As

Publication number Publication date
EE9800217A (en) 1998-12-15
AU4934297A (en) 1998-06-10
BR9707156A (en) 1999-05-18
NO983296L (en) 1998-09-17
AT405628B (en) 1999-10-25
PL327926A1 (en) 1999-01-04
EP0885120A1 (en) 1998-12-23
CA2243299A1 (en) 1998-05-28
NO983296D0 (en) 1998-07-16
ATA201096A (en) 1999-02-15

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