AT405628B - USE OF A MULTI-LAYER PACKAGING MATERIAL PRODUCED BY COEXTRUSION FOR TWIST PACKAGING - Google Patents
USE OF A MULTI-LAYER PACKAGING MATERIAL PRODUCED BY COEXTRUSION FOR TWIST PACKAGING Download PDFInfo
- Publication number
- AT405628B AT405628B AT0201096A AT201096A AT405628B AT 405628 B AT405628 B AT 405628B AT 0201096 A AT0201096 A AT 0201096A AT 201096 A AT201096 A AT 201096A AT 405628 B AT405628 B AT 405628B
- Authority
- AT
- Austria
- Prior art keywords
- layer
- packaging
- weight
- styrene
- packaging material
- Prior art date
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
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- 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
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- 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
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- 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
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- 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
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- 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
Description
ΑΤ 405 628 ΒΑΤ 405 628 Β
Die Erfindung betrifft die Verwendung eines durch Coextrusion hergestellten mehrschichtigen Verpak-kungsmaterials bestehend aus zumindestens einer Schicht A, welche aus einem Polypropylenhältigen Kunststoff gebildet wird, und zumindestens einer Schicht B, welche ein Styrol/Styrol-Butadien-Copolymer-Blend enthält.The invention relates to the use of a multilayer packaging material produced by coextrusion, 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.
Durch Coextrusion hergestellte Mehrschichtmaterialien sind bekannt. So beschreibt die EP-A1-540 031 ein derartiges Material aus vinylaromatischen Polymeren (Schicht A) und Polyolefinen (Schicht B). Die Schichten A und B werden in einem Coextrusionsverfahren zu einem Mehrschichtverbund verarbeitet, welcher gegenüber Kühlsubstanzen beständig ist und demgemäß für Türverkleidungen von Kühlschränken eingesetzt werden kann.Multilayer materials produced by coextrusion are known. For example, EP-A1-540 031 describes such a material made of vinyl aromatic polymers (layer A) and polyolefins (layer B). Layers A and B are processed in a coextrusion process to form a multi-layer composite that is resistant to cooling substances and can therefore be used for door panels of refrigerators.
Ferner ist aus der JP-A-59057748 ein durch Coextrusion hergestellter Mehrschichtverbund auf Basis eines Polystyrol-Blends (Schicht A) und Polyethylen (Schicht B) vorbekannt, welcher als Verpackungsfolie für Fleischtassen verwendet wird.Furthermore, JP-A-59057748 discloses a multi-layer composite produced by coextrusion based on a polystyrene blend (layer A) and polyethylene (layer B), which is used as a packaging film for meat cups.
Ein ähnlicher Mehrschichtverbund für ganz allgemeine Verpackungszwecke ist in der JP-A-51019079 geoffenbart, wobei anstelle von Polyethylen als Schicht B Polypropylen eingesetzt wird.A similar multilayer composite for very general packaging purposes is disclosed in JP-A-51019079, polypropylene being used as layer B instead of polyethylene.
Eine ganz spezielle Verpackungsform, insbesondere für kleine Verpackungsgüter wie Bonbons, ist die bekannte Art des Verschlusses von Volleinschlägen durch Eindrehen oder Twisten.A very special form of packaging, especially for small packaging goods such as candies, is the known way of closing full wraps by 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 herausgelöst 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. 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.
Aufgabe der Erfindung ist es daher, ein Verpackungsmaterial mit zufriedenstellendem Twistverhalten bei gleichzeitig guter Maschinengängigkeit bereitzustellen.The object of the invention is therefore to provide a packaging material with a satisfactory twist behavior and at the same time good machinability.
Erfindungsgemäß wird daher die Verwendung eines durch Coextrusion hergestellten mehrschichtigen Verpackungsmaterials aus zumindestens einer Schicht A, welche aus einem Polypropylenhältigen Kunststoff gebildet wird, und zumindestens einer Schicht B, welche ein Styrol/Styrol-Butadien-Copolymer-Blend enthält, zur Herstellung von Twistverpackungen vorgeschlagen.According to the invention, the use of a multilayer packaging material produced by coextrusion from 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, is therefore proposed for the production of twist packaging.
Vorzugsweise grenzen bei der erfindungsgemäßen Verwendung an die Schicht B beidseitig die Schichten A an.In the use according to the invention, layers A preferably adjoin layers B on both sides.
Besonders vorteilhaft ist die erfindungsgemäße Verwendung dann, wenn 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 use according to the invention is particularly advantageous when 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 wird nun anhand eines Ausführungsbeispiels näher erläutert.The invention will now be explained in more detail using an exemplary embodiment.
Dabei werden beispielsweise an die Schicht B beidseitig durch Coextrusion die Schichten A derart angebracht, daß ein Mehrschichtverbund mit dem Aufbau A-B-A entsteht.For example, layers A are attached to layer B on both sides by coextrusion in such a way that a multi-layer composite with structure A-B-A is formed.
Die Schichtdicken werden aus folgenden prozentuellen Bereichen ausgewählt, wobei deren Summe jeweils 100% der Gesamtschichtdicke ergeben muß. A: 15 - 35 % B: 30 - 60 % A: 15 - 35 %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% B: 30 - 60% A: 15 - 35%
Die Materialien der Schicht A sind Polypropylen (PP)-hältige Kunststoffe bzw. Blends.The materials of layer A are polypropylene (PP) -containing plastics or blends.
Das PP kann sowohl ein Homo-Polymer als auch ein Copolymer sein oder auch eine Mischung (Blend) daraus. Ein Copolymer bietet zusätzlich den Vorteil der Siegelbarkeit gegen sich selbst, gegen ein PP-Homo-Polymer oder PP-Blends.The PP can be both a homopolymer and a copolymer or a mixture (blend) thereof. A copolymer also offers the advantage of being sealable against itself, against a PP homopolymer 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) is suitable. 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 2Suitable 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 obtained with a butadiene content of 10 to 36 2
Claims (4)
Priority Applications (9)
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 |
PL97327926A PL327926A1 (en) | 1996-11-18 | 1997-11-18 | Screwed together package |
EP97911952A EP0885120A1 (en) | 1996-11-18 | 1997-11-18 | Twist packaging |
EE9800217A EE9800217A (en) | 1996-11-18 | 1997-11-18 | Twist-pack |
AU49342/97A AU4934297A (en) | 1996-11-18 | 1997-11-18 | Twist packaging |
BR9707156A BR9707156A (en) | 1996-11-18 | 1997-11-18 | Twist packaging |
PCT/AT1997/000248 WO1998022281A1 (en) | 1996-11-18 | 1997-11-18 | Twist packaging |
CA002243299A CA2243299A1 (en) | 1996-11-18 | 1997-11-18 | Twist packaging |
NO983296A NO983296L (en) | 1996-11-18 | 1998-07-16 | Turn-packaging |
Applications Claiming Priority (1)
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 |
Publications (2)
Publication Number | Publication Date |
---|---|
ATA201096A ATA201096A (en) | 1999-02-15 |
AT405628B true AT405628B (en) | 1999-10-25 |
Family
ID=3525895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT0201096A AT405628B (en) | 1996-11-18 | 1996-11-18 | USE OF A MULTI-LAYER PACKAGING MATERIAL PRODUCED BY COEXTRUSION FOR 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) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10105125B4 (en) * | 2001-02-05 | 2004-06-03 | Nordenia Deutschland Gronau Gmbh | Packaging film for rotary wrapping packaging |
DE10107592B4 (en) * | 2001-02-17 | 2005-04-28 | Nordenia Deutschland Gronau | labeling film |
ITTO20010647A1 (en) * | 2001-07-04 | 2003-01-04 | Nova Plast S R L | USE OF A MULTI-LAYER FILM MATERIAL TO REALIZE ENVELOPES. |
ITPD20020291A1 (en) | 2002-11-14 | 2004-05-15 | Bp Europack Spa | PACKING PARTICULARLY FOR THE PACKAGING OF FOOD PRODUCTS. |
BRPI0620471A2 (en) | 2005-11-15 | 2011-11-08 | Dow Global Technologies Inc | multilayer oriented shrink film and shrink label |
EP2134545B1 (en) | 2007-07-16 | 2010-09-29 | Rkw Se | Films for label facestock |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5119079A (en) * | 1974-08-09 | 1976-02-16 | Sumitomo Bakelite Co | FUKUGO FUIRUMUNAISHISHIITO |
JPS5957748A (en) * | 1982-09-29 | 1984-04-03 | 電気化学工業株式会社 | Coextruded laminated sheet |
EP0540031A1 (en) * | 1991-10-31 | 1993-05-05 | ENICHEM S.p.A. | Thermoplastic coupled multilayer structure |
Family Cites Families (5)
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 |
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 | |
DE4318031A1 (en) * | 1993-05-29 | 1994-12-01 | Hoechst Ag | Resin-containing, biaxially oriented polypropylene multilayer film, process for its production and its use |
-
1996
- 1996-11-18 AT AT0201096A patent/AT405628B/en not_active IP Right Cessation
-
1997
- 1997-11-18 WO PCT/AT1997/000248 patent/WO1998022281A1/en not_active Application Discontinuation
- 1997-11-18 BR BR9707156A patent/BR9707156A/en unknown
- 1997-11-18 CA CA002243299A patent/CA2243299A1/en not_active Abandoned
- 1997-11-18 PL PL97327926A patent/PL327926A1/en unknown
- 1997-11-18 AU AU49342/97A patent/AU4934297A/en not_active Abandoned
- 1997-11-18 EE EE9800217A patent/EE9800217A/en unknown
- 1997-11-18 EP EP97911952A patent/EP0885120A1/en not_active Withdrawn
-
1998
- 1998-07-16 NO NO983296A patent/NO983296L/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5119079A (en) * | 1974-08-09 | 1976-02-16 | Sumitomo Bakelite Co | FUKUGO FUIRUMUNAISHISHIITO |
JPS5957748A (en) * | 1982-09-29 | 1984-04-03 | 電気化学工業株式会社 | Coextruded laminated sheet |
EP0540031A1 (en) * | 1991-10-31 | 1993-05-05 | ENICHEM S.p.A. | Thermoplastic coupled multilayer structure |
Also Published As
Publication number | Publication date |
---|---|
AU4934297A (en) | 1998-06-10 |
EP0885120A1 (en) | 1998-12-23 |
NO983296L (en) | 1998-09-17 |
EE9800217A (en) | 1998-12-15 |
CA2243299A1 (en) | 1998-05-28 |
WO1998022281A1 (en) | 1998-05-28 |
ATA201096A (en) | 1999-02-15 |
BR9707156A (en) | 1999-05-18 |
NO983296D0 (en) | 1998-07-16 |
PL327926A1 (en) | 1999-01-04 |
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Legal Events
Date | Code | Title | Description |
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ELJ | Ceased due to non-payment of the annual fee | ||
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |