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WO1998001359A1 - Recipient d'emballage destine a la conservation frigorifique d'aliments liquides dans la glace ou dans l'eau - Google Patents

Recipient d'emballage destine a la conservation frigorifique d'aliments liquides dans la glace ou dans l'eau Download PDF

Info

Publication number
WO1998001359A1
WO1998001359A1 PCT/SE1997/001133 SE9701133W WO9801359A1 WO 1998001359 A1 WO1998001359 A1 WO 1998001359A1 SE 9701133 W SE9701133 W SE 9701133W WO 9801359 A1 WO9801359 A1 WO 9801359A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
packaging container
packaging
stability
core layer
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.)
Ceased
Application number
PCT/SE1997/001133
Other languages
English (en)
Inventor
Bo Lundgren
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.)
Tetra Laval Holdings and Finance SA
Original Assignee
Tetra Laval Holdings and Finance SA
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 Tetra Laval Holdings and Finance SA filed Critical Tetra Laval Holdings and Finance SA
Priority to BR9710221A priority Critical patent/BR9710221A/pt
Priority to AU35620/97A priority patent/AU3562097A/en
Publication of WO1998001359A1 publication Critical patent/WO1998001359A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes
    • 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
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
    • B32B1/00—Layered products having a non-planar shape
    • 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
    • B32B27/10—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 paper or cardboard
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/40—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper specially constructed to contain liquids
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B32B2307/518—Oriented bi-axially
    • 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 present invention relates to a packaging container possessing superior storage stability on storage in a storage medium containing liquid, the packaging container being produced from a laminated packaging material comprising a core layer of a fibre material with a layer of plastic applied on the outside of the packaging container.
  • the present invention moreover relates to the use of the packaging container for storage of liquid foods in a cold storage medium containing liquid.
  • a large group of packaging materials for such single-use disposable packages comprises a core layer of paper or paperboard and outer, liquid- tight layers of polyethylene, normally low density polyethylene (LDPE).
  • LDPE normally low density polyethylene
  • the composition of such a packaging material is intended to impart to the packed product the best possible product protection properties, at the same time as it is to render the package easy to produce and easy to handle.
  • a core layer of paper or paperboard imparts to the package good mechanical configurational stability so that the package may be distributed and handled in a simple and rational manner.
  • the outer, liquid-tight coatings of polyethylene protect the core layer against moisture and liquid.
  • the packaging material may also include different metal layers or plastic layers possessing barrier properties against light or gases, such as for example oxygen gas.
  • Such packaging containers are often produced in that a web of packaging material is reformed into a tube by the longitudinal edges of the web being united with one another, whereafter the tube is filled with the intended contents and sealed along narrow, transverse mutually spaced apart sealing zones.
  • the thus sealed-off portions of the tube containing their contents are thereafter separated from the tube by means of incisions in the above-mentioned sealing zones and are formed by folding into optional geometric configuration, depending on how the sealing joints or seams are oriented.
  • the above-described packaging container is normally not subjected to extremely damp or humid conditions for any length of time, for which reason it is often sufficient to coat the core layer with one layer of LDPE on both sides.
  • the climatic conditions are such that cooling is required both during transport and during storage, at the same time as access to refrigerated transport facilities and refrigerated storage facilities is limited in certain areas. It is then common to cool food products with ice in boxes or crates of a thermally insulating material. With the passage of time, the ice melts so that the coolant gradually comes to consist of a mixture of ice and water, and finally of water alone.
  • packaging containers of the above-described type after a certain storage time, lose configurational stability and so-called grip rigidity properties because of the fact that exposed incision edges of the core layer (which gives the packaging container its configurational stability and rigidity) absorb water and become soft and sloppy.
  • a lengthy period of storage at high relative humidity, such as between 80 and 100% RH also has the effect that the fibres in the core layer absorb moisture so that the stability properties of the packaging container deteriorate.
  • One object of the present invention is therefore to realise a novel packaging container of the type described by way of introduction which does not suffer from the inherent drawbacks of the type intimately related with the prior art technology.
  • a further object of the present invention is to realise a packaging container of the above-described type which, on storage in a cold storage medium containing liquid, possesses superior storage stability, i.e. almost totally retains its superior configurational stability and grip rigidity properties, even after a lengthy storage period.
  • Yet a further object of the present invention is to realise a packaging container of the above-described type which, on storage in high relative humidity, of the order of between 80 and 100% RH, almost totally retains its superior configurational stability and grip rigidity properties, even after a lengthy storage period.
  • the core layer By coating the core layer with a thicker and more rigid layer of a plastic selected from a group consisting of polypropylene, high density polyethylene (HDPE), and polyester instead of LDPE, better protection will be obtained against the penetration of liquid and moisture into the core layer, at the same time as such a layer of the above-mentioned polypropylene, HDPE or polyester contributes, because of its superior rigidity properties, to such a laminated packaging material - seen as a whole - also obtaining improved rigidity properties.
  • a plastic selected from a group consisting of polypropylene, high density polyethylene (HDPE), and polyester instead of LDPE
  • the plastic layer consists of an oriented polypropylene, oriented HDPE or an oriented polyester and, according to one preferred embodiment of the present invention, of a biaxially oriented polypropylene, biaxially oriented HDPE or a biaxially oriented polyester.
  • the type of polymer is selected such that the combination of its rigidity properties and moisture barrier properties with a suitable layer thickness entails that the packaging container may be stored in a liquid without appreciably losing its configurational stability and grip stability properties.
  • a film of an oriented or biaxially oriented polypropylene, HDPE or polyester is laminated onto the core layer by the intermediary of the extrusion of a thin interjacent lamination layer of, for example, polyethylene.
  • the packaging material often includes additional layers with light barrier properties or gas barrier properties, for example against oxygen gas.
  • a layer is applied on that side of the core layer which is turned to face towards the inside of the packaging container, but may also be applied on the other side of the core layer.
  • a barrier layer may consist of a metal layer such as, for example, an aluminium foil or a thin layer of metal or metal oxide such as, for example silicon oxide (SiOx, where x is 1.5 - 2.2), which has been deposited on a plastic layer of oriented polypropylene, HDPE, or oriented polyester.
  • the gas barrier layer may consist of a plastic layer comprising a polymer possessing superior gas barrier properties such as, for instance, ethyl vinyl alcohol (EVOH) or polyvinyl alcohol (PVAL).
  • incision edges In order further to protect the packaging container against the penetration of moisture and liquid, it is possible to protect incision edges (if any) which occur on the outside of the packaging material of the packaging container against exposure to water. Such protection is realised in a per se known manner by coating or impregnating the incision edges with a mechanically or chemically water-repellent agent.
  • the incision edges may be covered with a plastic strip which is laminated or glued in place on the packaging material around each respective incision edge, or these incision edges may be impregnated with a hydrophobic liquid substance such as, for example, an oil or a fat of some type.
  • Incision edges in overlap joints may alternatively be folded in under the overlapping packaging material so that they are not exposed to surrounding moisture or liquid.
  • FIG. 1 schematically illustrates a preferred packaging material according to the present invention
  • Figs. 2a and 2b show how the flexural strength and moisture content respectively, in a packaging material according to Fig. 1 in a packaging container produced from the packaging material varies with storage time in water at 5°C;
  • Figs. 3a and 3b show how the flexural strength and moisture content, respectively, in a packaging material according to Fig. 1 in a packaging container produced from the packaging material vary with storage time in high relative humidity, i.e. between 80 and 100% RH.
  • Fig. 1 thus schematically illustrates an example of a packaging material according to the present invention carrying the generic reference numeral 10.
  • the laminated packaging material comprises a core layer 11 of, for example, paper or paperboard of a conventional packaging quality.
  • the layer 12 may, for example, be laminated to the core layer by the intermediary of a thin, extruded plastic layer 13 of, for example, polyethylene.
  • BOPP is, for example, suitably coated on both sides with a thin layer 14;15 of an adhesion-promoting or thermosealable polymer.
  • a thin layer 14;15 of an adhesion-promoting or thermosealable polymer On that side of the core layer which, in a finished packaging container, is turned to face in towards the interior, an additional layer 16 may be applied which increases stability, and this layer may moreover possess superior gas barrier properties.
  • Such a layer 16 increasing stability may consist of a metal, such as, for example, an aluminium foil.
  • such an aluminium foil 16 is laminated to the core layer 11 by the intermediary of extrusion of a thin plastic layer of, for example, polyethylene
  • the aluminium layer 16 on the inside of the packaging container is suitably clad with a plastic layer 18 of, for example, polyethylene, this plastic layer moreover being thermosealable.
  • the packaging material of the type described with reference to Fig. 1 has been tested on storage in water and at relatively high humidity, such as 80-100% RH, respectively, at 5°C.
  • the layer 12 consisted of a film of approximately 18 ⁇ m thick BOPP, which is clad on both sides with a 0.6-0.7 ⁇ m thin layer 14;15 of an adhesion-promoting and thermosealable polymer.
  • the film 12 is laminated on the core layer 11 by the intermediary of extrusion of approx. 12 ⁇ m of low density polyethylene (LDPE) and, in the same manner, the aluminium foil is laminated to the other side of the core layer by the intermediary of approx. 25 ⁇ m of LDPE.
  • the aluminium foil 16 is clad with approx. 35 ⁇ m of LDPE, 18.
  • the core layer 11 consists of a paper of a packaging quality, for example of the type known as so-called liquid paperboard, with a rigidity of 80 mN.
  • the tested packaging material 10 has been compared with a packaging material of conventional type with the same configuration as the packaging material 10, but without the film 12.
  • the core layer is, thus, coated with an extruded layer of 12 ⁇ m low density polyethylene (LDPE) on that side which is turned to face towards the outside of the packaging container.
  • LDPE low density polyethylene
  • Parallelepipedic packaging containers of a volume of 250 ml of the Terra Brik® type, produced from the packaging material were test stored for 12 days. Measurements were made on 15 packages in each test after 1, 2, 5 and 12 days.
  • Figs. 2a and 3a the flexural strength of the test material 10 according to the invention is as good as totally retained on storage for 12 days in water and air at high humidity, respectively, while the flexural strength of a corresponding conventional packaging container is reduced by approx. 20 per cent after 1 day, and by approx. 30 per cent after 12 days' storage in water, and by approx. 10 per cent after 12 days' storage at high humidity.
  • the rigidity of the packaging material in the core layer reduces with increasing moisture content, with the result that the total rigidity of the packaging material is also reduced.
  • the core layer is instead laminated with an outside layer of a plastic material which, on the one hand, is rigid in both the machine direction (MD) and in the cross direction (CD), and on the other hand, permits lower moisture penetration than conventional outside layers of polyethylene, the packaging material in its entirety will be more rigid and more stable also in extremely damp conditions.
  • MD machine direction
  • CD cross direction
  • the outer plastic layer selected from a group consisting of polypropylene, HDPE and polyester has a thickness of at least 10 ⁇ m combined with an E-modulus of at least 1000 MPa in both machine and cross directions.
  • the above-mentioned outer plastic layer has a thickness of at least 15 ⁇ m and /or an E-modulus of at least 2000 MPa in both the machine and cross directions.
  • the above-mentioned outer plastic layer has an E-modulus in the machine and cross direction, respectively, of at least 3000 MPa.
  • the rigid outside layer cooperates with the rigid layer on the other side of the core layer - in this case the aluminium foil, and gives an I-beam effect with the interjacent core layer.
  • the present invention realises a packaging container which, like a packaging container of plastic or metal, is suitable for cold storage in water or ice and which may be stored in relatively high humidity, i.e. of the order of 80-100% RH, without losing its superior configurational stability and grip rigidity properties, even after a lengthy period of storage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)

Abstract

L'invention concerne des récipients d'emballage constitués d'un stratifié d'emballage, qui, quand ils sont conservés dans la glace, dans l'eau ou dans un air très humide, gardent leurs propriétés de stabilité de configuration et leur rigidité à la prise en main, ainsi que leur utilisation pour conserver des aliments liquides dans un milieu de conservation frigorifique contenant un liquide. Le stratifié d'emballage (10) comprend une couche centrale formée de fibres (11) et une couche externe comportant une couche (12) d'un plastique choisi entre le polypropylène, le PEHD et le polyester. La couche de plastique ci-dessus est de préférence un film biaxialement orienté. On peut appliquer sur le côté intérieur de la couche centrale une couche supplémentaire (16) destinée à augmenter la stabilité, par exemple une feuille d'aluminium. Le fait que le récipient d'emballage fabriqué à partir du stratifié d'emballage décrit avec référence à la figure garde une plus grande stabilité à la prise en main est probablement lié à une combinaison des facteurs suivants: la couche externe présente premièrement de meilleures propriétés de barrière vis-à-vis des liquides, deuxièmement une plus grande épaisseur et troisièmement une plus grande rigidité du matériau au niveau des couches externes employées dans les méthodes conventionnelles pour les récipients du type décrit ci-dessus. En outre, l'effet de poutre en I, dû au fait que la couche externe rigide (12) et la couche rigide (16) appliquée sur le côté intérieur de la couche centrale coopèrent avec la couche centrale intermédiaire (11), contribue au maintien de la stabilité de configuration et de prise en main dans un environnement humide.
PCT/SE1997/001133 1996-07-09 1997-06-24 Recipient d'emballage destine a la conservation frigorifique d'aliments liquides dans la glace ou dans l'eau Ceased WO1998001359A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BR9710221A BR9710221A (pt) 1996-07-09 1997-06-24 Recipiente acondicionador de configuração estável e uso do mesmo
AU35620/97A AU3562097A (en) 1996-07-09 1997-06-24 A packaging container intended for the cold storage of liquid foods in ice or water

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9602717-2 1996-07-09
SE9602717A SE507094C3 (sv) 1996-07-09 1996-07-09 Foerpackningsbehaalare avsedd foer kyllagring av flytande livsmedel i is eller vatten

Publications (1)

Publication Number Publication Date
WO1998001359A1 true WO1998001359A1 (fr) 1998-01-15

Family

ID=20403341

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1997/001133 Ceased WO1998001359A1 (fr) 1996-07-09 1997-06-24 Recipient d'emballage destine a la conservation frigorifique d'aliments liquides dans la glace ou dans l'eau

Country Status (6)

Country Link
KR (1) KR100433806B1 (fr)
CN (1) CN1070449C (fr)
AU (1) AU3562097A (fr)
BR (1) BR9710221A (fr)
SE (1) SE507094C3 (fr)
WO (1) WO1998001359A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999052872A1 (fr) 1998-04-09 1999-10-21 Meiji Seika Kaisha, Ltd. DERIVES D'AMINOPIPERIDINE COMME ANTAGONISTES D'INTEGRINE αvβ¿3?
WO2002083495A1 (fr) * 2001-04-11 2002-10-24 Albany International Corp. Contenant souple en forme de spirale pour fluides a usage maritime

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI117622B (fi) 2001-07-13 2006-12-29 Stora Enso Oyj Polymeeripinnoitteinen kuumasaumattava pakkausmateriaali, sen valmistusmenetelmä sekä sen käyttö suljettuun pakkaukseen
SE526512C2 (sv) * 2002-11-13 2005-09-27 Tetra Laval Holdings & Finance Transparant förpackningslaminat i plast och med gasbarriär
KR100923114B1 (ko) * 2008-09-10 2009-10-22 기동서 보온과 보냉 및 가열과 냉각이 가능한 휴대용 다목적 용기
CN102848660A (zh) * 2012-08-30 2013-01-02 苏州九鼎珍珠棉有限公司 一种复合轧花无纺布
CN103407650B (zh) * 2013-07-16 2015-10-28 达成包装制品（苏州）有限公司 涂蜡水产纸盒及其制备工艺
US11453517B2 (en) 2014-05-08 2022-09-27 Ifoodbag Ab Grocery transport packaging system
CN106458371B (zh) 2014-05-08 2019-10-11 艾福德柏格公司 杂货运送包装系统

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JPH01222920A (ja) * 1988-03-02 1989-09-06 Showa Denko Kk 共押出ラミネート物の製造方法
JPH0490343A (ja) * 1990-08-03 1992-03-24 Toppan Printing Co Ltd 耐水性紙容器およびそのための容器用素材
JPH054638A (ja) * 1991-06-28 1993-01-14 Toppan Printing Co Ltd 板紙製密封角型容器

Non-Patent Citations (3)

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Title
DIALOG INFORMATION SERVICES, File 351, Derwent WPI, Dialog Accession No. 008038579, WPI Accession No. 89-303691/42, SHOWA DENKO KK, "Co-Extrusion Coated Laminate Prodn. - by Laminating High Density Polyethylene Layer, Low Densitypolyethylene Layer and Substrate Layer"; & JP,A,01 222 920, (06-09-89), *
DIALOG INFORMATION SERVICES, File 351, Derwent WPI, Dialog Accession No. 009027145, WPI Accession No. 92-154505/19, TOPPAN PRINTING CO., "Waterproof Paper Container Prepn. - Involves Laminating Biaxially Stretched HDPE Film on Inner Surface and Stretched Polyolefin on Outer Surface of Waterproof Paper"; & JP,A,04 090 *
DIALOG INFORMATION SERVICES, File 351, Derwent WPI, Dialog Accession No. 009361583, WPI Accession No. 93-055061/07, TOPPAN PRINTING CO LTD., "Enclosed Angular Cardboard Container is Laminated with Resin Layer Composed of Low Adsorptive Polyester Resin"; & JP,A,05 004 638, (14-01-93), 9307. *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999052872A1 (fr) 1998-04-09 1999-10-21 Meiji Seika Kaisha, Ltd. DERIVES D'AMINOPIPERIDINE COMME ANTAGONISTES D'INTEGRINE αvβ¿3?
WO2002083495A1 (fr) * 2001-04-11 2002-10-24 Albany International Corp. Contenant souple en forme de spirale pour fluides a usage maritime
CN100445165C (zh) * 2001-04-11 2008-12-24 奥尔巴尼国际公司 螺旋成形柔性流体装运容器和制造该容器的方法

Also Published As

Publication number Publication date
BR9710221A (pt) 1999-08-10
CN1225064A (zh) 1999-08-04
KR20000023598A (ko) 2000-04-25
KR100433806B1 (ko) 2004-06-04
CN1070449C (zh) 2001-09-05
SE507094C3 (sv) 1998-04-27
SE507094C2 (sv) 1998-03-30
AU3562097A (en) 1998-02-02
SE9602717D0 (sv) 1996-07-09
SE9602717L (sv) 1998-01-10

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