EP1403192A1 - Matériau métallique en forme de feuille pour emballer des produits alimentaires - Google Patents

Matériau métallique en forme de feuille pour emballer des produits alimentaires Download PDF

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Publication number
EP1403192A1
EP1403192A1 EP20030020226 EP03020226A EP1403192A1 EP 1403192 A1 EP1403192 A1 EP 1403192A1 EP 20030020226 EP20030020226 EP 20030020226 EP 03020226 A EP03020226 A EP 03020226A EP 1403192 A1 EP1403192 A1 EP 1403192A1
Authority
EP
European Patent Office
Prior art keywords
sheet
material according
layer
shaped material
lacquer
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Withdrawn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
EP20030020226
Other languages
German (de)
English (en)
Inventor
Franco Fabaro
Emanuele Autorino
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.)
CUKI COFRESCO S.P.A.
Original Assignee
Comital Cofresco SpA
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 Comital Cofresco SpA filed Critical Comital Cofresco SpA
Publication of EP1403192A1 publication Critical patent/EP1403192A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50—Multilayers
    • B05D7/52—Two layers
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/28—Applications of food preservatives, fungicides, pesticides or animal repellants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2202/00—Metallic substrate
    • B05D2202/20—Metallic substrate based on light metals
    • B05D2202/25—Metallic substrate based on light metals based on Al

Definitions

  • This invention relates to a malleable sheet for foodstuff packing of a metallic material, typically an aluminium alloy, of the kind used in the home or industrial environment, e.g. for the preservation of foodstuffs in refrigerators or freezers.
  • a metallic material typically an aluminium alloy
  • thin sheets of aluminium alloy are widely used in the home or industrial environment for wrapping foodstuffs such as meat, fish, salted meats, vegetables, and other perishable foodstuffs to be preserved in refrigerators, as well as for conveyance, e.g. in case of picnics and the like.
  • Such sheets with different thicknesses, are also used for the manufacture of trays and other food-containers.
  • Such sheets are generally smooth, naked plates, it is also known to manufacture treated sheets in order to enhance their performances, e.g. slightly embossed aluminium sheets for reducing or avoiding sticking of the sheet to the wrapped foodstuff, or, to the same purpose, sheets are manufactured which have one surface coated with lacquer or lined with a non-sticking, protective layer.
  • the main object of the present invention is now to provide a sheet-shaped material for foodstuff packing of the above-mentioned kind, which is improved to offer bacteriostatic, anti-microbial properties in order to delay the deterioration of the foodstuff wrapped in the sheet due to the bacterial action.
  • Another object is to provide such sheet with bacteriostatic properties by means of unexpensive processes.
  • FIG. 1 of the attached drawing shows an enlarged, transversal cross-section of a sheet for foodstuff packing according to this invention, by way of non limiting example.
  • the invention is based on the universal acknowledgment of the wide-spectrum, bacteriostatic and fungi-cidal properties of silver, which have been also confirmed by scientific studies since the first half of 1900s.
  • the anti-microbial properties of silver are also described in scientific articles such as Some Specific Cellular effects of Electrically Injected Silver and Gold Ions, of J.A. Spadaro and R.O. Becker, published on Bioelectrochemistry and Bioenergetics 3, 449-57 (1976), or Inhibitory and Cidal Antimicrobial Actions of Electrically Generated Silver Ions, of Richard E. Hall and Robert E. Marquis, published on Journal of Oral Maxillofac. Surg., 45, 779 (1987).
  • a malleable sheet 10 of an aluminium alloy of the kind normally used for foodstuff packing, has one surface coated with an intermediate layer of vinyl lacquer 12 and a successive main layer of vinyl lacquer 14, in which are incorporated silver granules 16 that are substantially uniformly dispersed.
  • Both the layers are deposited by rotogravure technics as well known in this field.
  • the silver granules are dispersed in the lacquer dip, wich is deposited on the aluminium sheet by rotogravure.
  • the blank sheet of aluminium alloy is preferably 9 to 18 ⁇ m thick.
  • the intermediate lacquer layer 12 preferably 0,5 to 3 ⁇ m thick, although its thickness is not critical and could also be higher.
  • the main layer of lacquer 14 is 1 to 5 ⁇ m thick and the silver granules 16 in the lacquer have an average gauge of about 1 ⁇ m. Since the gauge of the silver granule is similar to the thickness of the layer of lacquer, a considerable fraction of the granules substantially surfaces from the free surface of the lacquer layer, while another considerable fraction of the granules, though it does not surface from the layer, may nevertheless be considered as at least partly exposed to the outside because of the porosity of the lacquer.
  • the first lacquer layer 12 between the aluminium 10 and the second layer 14 has the aim of preventing galvanic interactions between the aluminium and the silver granules.
  • any areas of direct contact between aluminium and silver would form bimetallic couples and accordingly generate galvanic currents which would damage or perforate the sheet.
  • the intermediate layer 14 of vinyl lacquer is a barrier that avoids the direct contact of the silver with the aluminium, thereby preventing the formation of bimetallic couples.
  • the active surface is marked with an identification inscription, preferably by embossment of the aluminium which is visible by translucence, though it may be envisaged to mark the opposite (inactive) surface with a suitable inscription.
  • identification methods are possible, e.g. by a distinctive colour of the lacquer.
  • the intermediate lacquer layer 12 is useful but not essential.
  • the lakes can be different from those which have been indicated, and also the thicknesses and the calibres may be changed with respect to the preferred values that have been indicated.
  • the described embodiment is referred to a thin sheet-shaped material that is suitable for wrapping foodstuffs because of its high flessibility, the same teachings may be applied without variations to a thicker, less-flexible sheet-shaped material, which is adapted to be moulded in form of trays, food-containers and the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Pest Control & Pesticides (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)
EP20030020226 2002-09-26 2003-09-06 Matériau métallique en forme de feuille pour emballer des produits alimentaires Withdrawn EP1403192A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO20020843 ITTO20020843A1 (it) 2002-09-26 2002-09-26 Materiale in foglio per imballaggio alimentare.
ITTO20020843 2002-09-26

Publications (1)

Publication Number Publication Date
EP1403192A1 true EP1403192A1 (fr) 2004-03-31

Family

ID=31972238

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030020226 Withdrawn EP1403192A1 (fr) 2002-09-26 2003-09-06 Matériau métallique en forme de feuille pour emballer des produits alimentaires

Country Status (2)

Country Link
EP (1) EP1403192A1 (fr)
IT (1) ITTO20020843A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006047801A1 (de) * 2006-10-06 2008-04-24 Kuhne Anlagenbau Gmbh Antimikrobielle Lebensmittelverpackung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02131932A (ja) * 1988-11-12 1990-05-21 Nippon Foil Mfg Co Ltd 金属箔複合材料
JPH10271981A (ja) * 1997-01-29 1998-10-13 Kenji Nakamura 生鮮食品用包装材
JPH11208733A (ja) * 1998-01-29 1999-08-03 Sumikei Aluminium Foil Kk 食品収容容器
US6179141B1 (en) * 1996-08-06 2001-01-30 Kenji Nakamura Container assembly provided with anitbacterial agent against slow-leak bacteria
JP2002029003A (ja) * 2000-07-18 2002-01-29 Dainippon Printing Co Ltd フィルム材を貼着した紙材又は樹脂材

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02131932A (ja) * 1988-11-12 1990-05-21 Nippon Foil Mfg Co Ltd 金属箔複合材料
US6179141B1 (en) * 1996-08-06 2001-01-30 Kenji Nakamura Container assembly provided with anitbacterial agent against slow-leak bacteria
JPH10271981A (ja) * 1997-01-29 1998-10-13 Kenji Nakamura 生鮮食品用包装材
JPH11208733A (ja) * 1998-01-29 1999-08-03 Sumikei Aluminium Foil Kk 食品収容容器
JP2002029003A (ja) * 2000-07-18 2002-01-29 Dainippon Printing Co Ltd フィルム材を貼着した紙材又は樹脂材

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 367 (M - 1008) 9 August 1990 (1990-08-09) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 01 29 January 1999 (1999-01-29) *
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 13 30 November 1999 (1999-11-30) *
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 05 3 May 2002 (2002-05-03) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006047801A1 (de) * 2006-10-06 2008-04-24 Kuhne Anlagenbau Gmbh Antimikrobielle Lebensmittelverpackung
DE102006047801B4 (de) * 2006-10-06 2008-08-14 Kuhne Anlagenbau Gmbh Antimikrobielle Lebensmittelverpackung und Verfahren zur Herstellung dieser Verpackung
WO2008043501A3 (fr) * 2006-10-06 2008-09-18 Kuhne Anlagenbau Gmbh Emballage alimentaire anti-microbien
US7915325B2 (en) 2006-10-06 2011-03-29 Kuhne Anlagenbau Gmbh Antimicrobial food packaging
AU2007306672B2 (en) * 2006-10-06 2011-07-21 Kuhne Anlagenbau Gmbh Antimicrobial food packaging
CN101522036B (zh) * 2006-10-06 2012-10-24 库纳设备制造有限责任公司 抗微生物的食品包装

Also Published As

Publication number Publication date
ITTO20020843A1 (it) 2004-03-27

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