EP2512937B1 - Contenant en forme de boite de conserve avec couche de protection interieure - Google Patents

Contenant en forme de boite de conserve avec couche de protection interieure Download PDF

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Publication number
EP2512937B1
EP2512937B1 EP10807603.5A EP10807603A EP2512937B1 EP 2512937 B1 EP2512937 B1 EP 2512937B1 EP 10807603 A EP10807603 A EP 10807603A EP 2512937 B1 EP2512937 B1 EP 2512937B1
Authority
EP
European Patent Office
Prior art keywords
protective layer
pores
tin
container
protective
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.)
Not-in-force
Application number
EP10807603.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2512937A1 (fr
Inventor
Alain Le Talludec
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.)
Trivium Packaging Group Netherlands BV
Original Assignee
Ardagh MP Group Netherlands BV
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 Ardagh MP Group Netherlands BV filed Critical Ardagh MP Group Netherlands BV
Priority to EP16151810.5A priority Critical patent/EP3025977B1/fr
Publication of EP2512937A1 publication Critical patent/EP2512937A1/fr
Application granted granted Critical
Publication of EP2512937B1 publication Critical patent/EP2512937B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/14—Linings or internal coatings
    • 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
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
    • B65D1/26—Thin-walled containers, e.g. formed by deep-drawing operations
    • B65D1/28—Thin-walled containers, e.g. formed by deep-drawing operations formed of laminated material
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D

Definitions

  • the present invention relates to a container of the kind can, for receiving a product to be packaged, the inner surface is at least partially made of tin coated with a protective layer.
  • Certain foodstuffs such as fruit or products containing tomato, are advantageously packaged in cans containing a can body whose inner surface is made at least partially of tin.
  • the product takes a certain amount of tin on the inner surface of the can body, which ensures the preservation of its organoleptic and visual properties by a limitation, or even a suppression, of oxidation phenomena.
  • Such canisters partially partially painted internally are for example described in the documents EP-0 492 870 or EP-0 688 615 .
  • the box body comprising a bottom element which is extended by a side wall whose upper edge delimits an upper opening intended to receive a shutter element, is made from a shaped tin plate by a stamping operation.
  • the body of this can consists of a single varnished cylindrical surface, which extends continuously and uniformly over a portion of the height of the inner surface of its side wall, from its upper edge.
  • the remaining cylindrical portion of the height of this side wall (here on the side of its bottom element) constitutes an exposed area of the inner surface of tin (devoid of protective layer).
  • the aforementioned type of box, partially painted, is not completely satisfactory in that the inner surface of its side wall has a contrast with two different color zones, which are unsightly (the upper varnished , rather clear, and the other lower devoid of varnish, darker).
  • the Applicant has developed a new container of the type can, particularly suitable for packaging foodstuffs, whose inner surface of tin is coated with a protective layer which is adapted to limit or even eliminate the aesthetic impact of the chemical reaction of the product on the exposed tin, while allowing optimum arrangement of the tin to preserve the qualitative characteristics of the packaged foodstuff. More generally, such a container can be used for the packaging of any product for which it would be interesting to take tin directly on the can body.
  • a container comprising all the technical features of the preamble of claim 1 is known from the document EP2 082 968 .
  • This particular tin can thus divides the exposed tin inner surface (accessible through the pores) into a plurality or multiplicity of distinct areas; this allows the desired exposed tinned surface to be distributed over a larger portion of the inner packaging surface, and thus to limit the visual impact resulting from the chemical reaction between the tin and the packaged product.
  • the invention also relates to a process for the manufacture of the container presented above, this process being defined by the appended claim 10, this process comprising, before the step of filling with the product to be packaged, a step for obtaining protective layer comprising, distributed over at least a portion of its surface, a plurality of pores through each of which an area facing the inner surface of tin is accessible from the container interior volume.
  • the protective layer consists of a protective varnish which is applied to the inner surface of tin so as to obtain the protective layer comprising the access pores to said tin-plated inner surface.
  • This layer of protective varnish is advantageously applied (i) to a metal part intended to be shaped to form at least a part of the box body and / or (ii) on a metal part already shaped.
  • the protective varnish applied advantageously consists of an emulsion or dispersion comprising (i) the protective varnish itself and (ii) a fluid dispersed in said varnish and which is capable of being removed after the application operation on the body of box so as to form the pores.
  • the fluid dispersed in the varnish consists for example of a liquid intended to be removed by natural or active evaporation.
  • the container according to the invention as represented on the Figures 1 and 2 here consists of a can, for the packaging of a foodstuff for example (not shown).
  • This container comprises a can body 1 composed of a bottom member 2 whose periphery is extended upwards by a side wall 3 (preferably in one or two rooms).
  • the side wall 3 is preferably devoid of moldings, or mostly devoid of such moldings.
  • the upper edge 4 of the side wall 2 delimits an upper opening 5 through which the foodstuff to be conditioned is brought.
  • This upper edge 4 is intended to receive a shutter member (not shown), which may be chosen by those skilled in the art (for example a peelable membrane or a metal disc with rupture initiation line).
  • This can body 1 defines an interior volume 6 for the packaging of the product of interest (for example a food product based on tomato or fruit).
  • the product of interest for example a food product based on tomato or fruit.
  • the bottom element 2 and the side wall 3 of the can body 1 can be made in one piece (for example by stamping). These two parts 2, 3 can also be manufactured independently of one another and then secured together by any suitable operation (for example by crimping or welding).
  • the bottom element 2 and the side wall 3 of this box body 1 are advantageously made of a steel matrix. Moreover, as illustrated by the figure 2 at least a part of the inner surface 7 of this can body 1 (oriented towards the inner volume side 6), and preferably at least the inner surface 3a of its side wall 3, is made of tin coating and / or a tin-based alloy. The bottom element 2 may or may not be coated with such a layer of tin.
  • the inner surface of tin 7 is itself coated with an inner protective layer 10 which is made of a product resistant to the chemical action of the product to be packaged.
  • the protective layer 10 of the surface tinned 7 comprises, distributed over at least part of its surface, a plurality of pores 11 through each of which a facing 7 in area of the inner surface 7 of tin is accessible from the interior volume of container 6.
  • the bottom element 2 is itself coated here with a continuous protective layer; alternatively, this element 2 may be (i) devoid of protection, (ii) partially protected or (iii) provided with a protective layer 10 also provided with pores 11 (in particular if the bottom element 2 also comprises an inner surface of tin 7).
  • This multi-pore protective layer 10, 11 allows the contacting zones 7 a of the inner tin underlying surface 7 with the packaged product, so as to deliver a certain amount of tin in the product by oxidation-reduction chemical reaction.
  • This particular distribution of exposed tin zones 7 has the advantage of limiting their aesthetic impact (blackening, darkening due to oxidation by the foodstuff), but also possibly ensuring a delivery of tin well distributed on the the height of the packaged foodstuff (to allow at least approximately uniform distribution of the tin).
  • the pores 11 of the protective layer 10 are advantageously uniformly distributed, or at least approximately uniformly, over the entire inner surface of tin 7.
  • these pores 11 of the protective layer 10 can be distributed and / or grouped only on the side wall 3: over its entire height or only a portion of the height of this side wall 3, for example in the width one or more annular bands.
  • these pores 11 are then advantageously arranged at a distance from the upper edge 4 and below the surface level of the products packaged in this body. box 1; an upper band of the side wall 3 provided with a uniform protective layer 10 and free of such pores 11 is thus obtained, which is particularly useful for preventing any negative visual appearance of the protective layer 10.
  • these pores 11 may be distributed and arranged randomly, or non-randomly (that is to say in a predetermined manner and predetermined to form, together, a particular pattern and / or regular).
  • the pores 11 advantageously have a maximum dimension d greater than 0.1 ⁇ m, and preferably less than 5 mm; these pores 11 preferably have a maximum dimension d of between 10 ⁇ m and 2.5 mm.
  • the pores 11 each have an area of between 100 ⁇ m 2 and 9 mm 2 .
  • dimension of a pore is meant preferably the largest dimension of this pore 11, as illustrated by the dimensional dimension d on the figure 2 .
  • These pores 11 may have a regular contour, or at least approximately regular, for example of generally circular or oval shape as shown in FIG. figure 2 .
  • this contour may also be irregular.
  • the pores 11 advantageously together represent an area of between 10% and 70% (preferably between 17% and 50%) of the inner surface of the box body 1, preferably of the inner surface of the side wall 3 and more preferably the inner surface of tin 7.
  • the protective layer 10 advantageously consists of a layer of varnish, the composition and thickness of which are chosen by those skilled in the art depending on the conditioned foodstuff.
  • This protective varnish is preferably chosen from polyester and epoxy acrylate. It can be applied in liquid or powder form.
  • Its thickness is advantageously between 2 microns and 80 microns, and more preferably between 4 microns and 30 microns.
  • the multi-porous protective varnish layer 10, 11 can be obtained by means of a process comprising, before the step of filling with the product to be packaged, a step of applying the protective varnish to the inner surface of the tin 7 so as to obtain directly said protective layer 10 provided with pores 11.
  • the protective varnish applied consists for example of an emulsion or dispersion comprising (i) the protective varnish itself and (ii) a fluid (gas or liquid) dispersed in this varnish and which is suitable to be removed after the application operation on the can body 1 so as to form the pores 11 (in practice, this dispersed fluid is preferably immiscible or poorly miscible with the protective varnish).
  • this liquid is intended to be removed by natural or active evaporation.
  • the liquid removed consists for example of water.
  • the protective varnish may be applied by means of a spray nozzle, a brush, a sponge and / or a roller, these application means being suitably controlled so as to obtain the special protective layer as described above.
  • the protective layer 10 consists of a film integral with the inner surface of the can body 1 and matching the latter.
  • This protective film 10 is chosen with an elongation resistance which is lower than that of the metallic material constituting said box body 1.
  • This protective film 10 advantageously consists of a material of polyethylene terephthalate or polypropylene type.
  • This protective film 10 may also consist of a layer of varnish having a reduced thickness, for example of the order of 1 to 4 microns, preferably 1 to 2 microns (or any other type of adapted coating), torn at the forming so as to generate the desired pores.
  • the one-piece box body 1 of the figure 1 can be obtained by carrying out a method comprising the steps detailed below, before the step of filling the product.
  • a metal part is manufactured, the shaping of which will make it possible to constitute the can body 1.
  • This metal part is covered with the bonded laminated film 10 (or the relatively fine protective lacquer layer), intact or intact. which is intended to form the protective layer and which has a resistance to elongation lower than that of the metallic material constituting the metal part.
  • this assembly is shaped, for example by stamping, to form the box body 1.
  • This forming operation generates a partial and local tearing of the protective film 10, because of the elongation of the workpiece 1 under conditions that are greater than the resistance to elongation of the laminated film 10.
  • This operation of Stretching thus creates a set of pores, cracks or tears 11 acting as free passages to the underlying tin.
  • the container can be filled with the product to be packaged, and the filling opening 5 can then be closed with a second bottom element reported. .
  • the side wall 3 is of generally cylindrical tubular shape; it could alternatively have any other configuration and desired section: it could have for example a radial section oval, rectangular or square, oblong, etc. Similarly, it may have on its height a set of ribs or grooves, dents, necking, etc.
  • the container according to the invention has an inner surface which is partially protected.
  • the free zones 7 a of the inner surface of tin 7 are arranged to limit the visual impact of the chemical reaction with the packaged product.
  • the exposed tin zones are distributed 7 has here the height of the side wall 3, which allows a better distribution of tin into the packed product.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Packages (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Buffer Packaging (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • Tires In General (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
EP10807603.5A 2009-12-17 2010-12-16 Contenant en forme de boite de conserve avec couche de protection interieure Not-in-force EP2512937B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16151810.5A EP3025977B1 (fr) 2009-12-17 2010-12-16 Procédé pour la fabrication d'un contenant en forme de boite de conserve avec couche de protection intérieure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0906114A FR2954291B1 (fr) 2009-12-17 2009-12-17 Contenant en forme de boite de conserve avec couche de protection interieure
PCT/FR2010/052769 WO2011073583A1 (fr) 2009-12-17 2010-12-16 Contenant en forme de boite de conserve avec couche de protection interieure

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP16151810.5A Division EP3025977B1 (fr) 2009-12-17 2010-12-16 Procédé pour la fabrication d'un contenant en forme de boite de conserve avec couche de protection intérieure
EP16151810.5A Division-Into EP3025977B1 (fr) 2009-12-17 2010-12-16 Procédé pour la fabrication d'un contenant en forme de boite de conserve avec couche de protection intérieure

Publications (2)

Publication Number Publication Date
EP2512937A1 EP2512937A1 (fr) 2012-10-24
EP2512937B1 true EP2512937B1 (fr) 2016-03-30

Family

ID=42134285

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10807603.5A Not-in-force EP2512937B1 (fr) 2009-12-17 2010-12-16 Contenant en forme de boite de conserve avec couche de protection interieure
EP16151810.5A Not-in-force EP3025977B1 (fr) 2009-12-17 2010-12-16 Procédé pour la fabrication d'un contenant en forme de boite de conserve avec couche de protection intérieure

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP16151810.5A Not-in-force EP3025977B1 (fr) 2009-12-17 2010-12-16 Procédé pour la fabrication d'un contenant en forme de boite de conserve avec couche de protection intérieure

Country Status (17)

Country Link
US (1) US9511902B2 (zh)
EP (2) EP2512937B1 (zh)
JP (1) JP5716039B2 (zh)
KR (2) KR101877328B1 (zh)
CN (2) CN102725198B (zh)
AU (1) AU2010332628A1 (zh)
BR (1) BR112012014195A2 (zh)
CA (1) CA2784798C (zh)
DK (1) DK2512937T3 (zh)
ES (2) ES2641550T3 (zh)
FR (1) FR2954291B1 (zh)
HU (2) HUE034520T2 (zh)
MA (1) MA33749B1 (zh)
PL (2) PL3025977T3 (zh)
RU (1) RU2555947C2 (zh)
WO (1) WO2011073583A1 (zh)
ZA (1) ZA201203384B (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3456219B1 (en) 2012-03-06 2022-12-28 Hydrapak LLC Flexible container
GB201211077D0 (en) * 2012-06-22 2012-08-01 Crown Packaging Technology Inc Two-piece can
USD817632S1 (en) * 2015-10-02 2018-05-15 Hydrapak, Inc. Flask

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1622533A (en) * 1924-02-11 1927-03-29 American Can Co Process of preparing interiorly-coated containers
US1811160A (en) * 1928-06-05 1931-06-23 Continental Can Co Container for food products
US1830244A (en) * 1928-06-19 1931-11-03 California Packing Corp Protective coating for cans
US1958765A (en) * 1932-10-05 1934-05-15 Joseph H Perkins Container for food and other products
US2071602A (en) * 1934-09-12 1937-02-23 Rheem Mfg Co Noncorrosive lined container
US2875071A (en) * 1955-05-18 1959-02-24 Patent Prot Corp Preservation of color in green vegetables
US3219729A (en) * 1961-09-27 1965-11-23 Glidden Co Mixed neutral vinyl resin/reactive vinyl resin coating compositions, and cans and/or container components coated therewith
US3265239A (en) * 1962-10-23 1966-08-09 American Can Co Coated metal container
US3888224A (en) * 1969-05-30 1975-06-10 Bosch Gmbh Robert Liquid food preservation
US3687334A (en) * 1970-09-23 1972-08-29 Del Monte Corp Metal container with removable closure
JPS5344614Y2 (zh) * 1972-02-18 1978-10-26
US4055272A (en) * 1975-12-31 1977-10-25 American Can Company Containers
US4452375A (en) * 1981-04-02 1984-06-05 The Dow Chemical Company Manufacture of draw-redraw cans using steel sheet material film laminated or extrusion coated with a high density polyethylene graft copolymer
JPH03256852A (ja) * 1990-03-06 1991-11-15 Toyo Seikan Kaisha Ltd 内容物の保存性とヒートシール性とに優れた容器
DE69022214T2 (de) * 1989-10-04 1996-02-22 Toyo Seikan Kaisha Ltd Behälter mit heissversiegelung zum bewahren von artikeln unter luftabschluss.
GB9027954D0 (en) 1990-12-22 1991-02-13 Cmb Foodcan Plc Containers
CN2097175U (zh) * 1990-12-31 1992-02-26 骆立波 大开口圆罐易拉盖
US5202013A (en) * 1991-10-15 1993-04-13 Alcan International Limited Process for coloring metal surfaces
IL150397A0 (en) * 2000-01-14 2002-12-01 Astrazeneca Ab A method for applying a polymer coating to the internal surface of a container
EP1201331A1 (de) * 2000-09-27 2002-05-02 Novocan AG Verfahren zum Herstellen einer mit einer Dekorschicht versehenen Metalldose , Vorrichtung zur Durchführung dieses Verfahrens
JP2002172869A (ja) * 2000-12-07 2002-06-18 Asia Genshi Kk 感熱孔版原紙
JP4899745B2 (ja) * 2006-09-22 2012-03-21 Ｊｆｅスチール株式会社 樹脂フィルム被覆金属缶
ATE530454T1 (de) * 2008-01-25 2011-11-15 Ardagh Mp Group Netherlands Bv Dose mit teilweiser innenlackierung und verfahren zur herstellung derselben

Also Published As

Publication number Publication date
BR112012014195A2 (pt) 2017-04-04
MA33749B1 (fr) 2012-11-01
AU2010332628A1 (en) 2012-06-21
KR20120107474A (ko) 2012-10-02
ZA201203384B (en) 2013-01-30
EP2512937A1 (fr) 2012-10-24
ES2641550T3 (es) 2017-11-10
ES2578083T3 (es) 2016-07-20
HUE034520T2 (hu) 2018-02-28
US20120255262A1 (en) 2012-10-11
RU2555947C2 (ru) 2015-07-10
JP5716039B2 (ja) 2015-05-13
HUE028905T2 (en) 2017-01-30
CN102725198A (zh) 2012-10-10
CA2784798C (fr) 2017-11-07
FR2954291A1 (fr) 2011-06-24
US9511902B2 (en) 2016-12-06
KR101877328B1 (ko) 2018-08-07
CN104044796A (zh) 2014-09-17
CN102725198B (zh) 2014-12-10
FR2954291B1 (fr) 2012-03-09
EP3025977B1 (fr) 2017-06-28
CN104044796B (zh) 2016-06-08
WO2011073583A1 (fr) 2011-06-23
KR20170023199A (ko) 2017-03-02
PL3025977T3 (pl) 2017-11-30
PL2512937T3 (pl) 2016-09-30
RU2012130132A (ru) 2014-01-27
KR101837125B1 (ko) 2018-03-09
EP3025977A1 (fr) 2016-06-01
DK2512937T3 (en) 2016-07-04
CA2784798A1 (fr) 2011-06-23
JP2013514240A (ja) 2013-04-25

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