EP3025977B1 - Verfahren zur herstellung eines behälters in form einer konservendose mit innerer schutzbeschichtung - Google Patents

Verfahren zur herstellung eines behälters in form einer konservendose mit innerer schutzbeschichtung Download PDF

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Publication number
EP3025977B1
EP3025977B1 EP16151810.5A EP16151810A EP3025977B1 EP 3025977 B1 EP3025977 B1 EP 3025977B1 EP 16151810 A EP16151810 A EP 16151810A EP 3025977 B1 EP3025977 B1 EP 3025977B1
Authority
EP
European Patent Office
Prior art keywords
pores
protective layer
tin
protective
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.)
Not-in-force
Application number
EP16151810.5A
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English (en)
French (fr)
Other versions
EP3025977A1 (de
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 PL16151810T priority Critical patent/PL3025977T3/pl
Publication of EP3025977A1 publication Critical patent/EP3025977A1/de
Application granted granted Critical
Publication of EP3025977B1 publication Critical patent/EP3025977B1/de
Not-in-force legal-status Critical Current
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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
    • 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
    • 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
    • B65D1/40—Details of walls
    • 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
    • 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 method for the manufacture of a container of the kind can, intended to receive 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 that extends continuously and uniformly over a portion of the height of the inner surface of its side wall from its top 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).
  • Such cans, partially internally varnished, are for example still described in the document EP-2 082968 , which further discloses a method of making a container according to the preamble of claim 1.
  • the body of this can comprises a plurality of strip-like lacquered surfaces separated by a plurality of uncoated surfaces also in the form of strips.
  • the varnished surfaces in the form of strips are obtained for example by spraying the varnish from the upper opening of the can body, or by a projection of the varnish according to a predetermined cycle.
  • the Applicant has developed a process for the manufacture of a tin-type container, particularly suitable for the packaging of 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 an optimal provision of 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.
  • the method is suitable for the manufacture of a container comprising a box body (for example in one or two pieces) defining an interior volume of packaging and having an inner surface formed at least partially of tin which is coated with a protective layer to resist the chemical action of the product to be packaged.
  • the invention is defined by a process according to the appended claim 1.
  • the protective layer comprises, distributed over at least a portion of its surface, a plurality of pores (or otherwise called orifices or openings) through each of which an area facing the inner surface of tin is accessible from the inner volume of packaging.
  • the protective layer consists of a protective varnish, which is applied to the inner surface of tin so as to obtain, before filling, said protective layer comprising the access pores to said inner surface of tin.
  • This protective varnish applied 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.
  • 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.
  • 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 container as shown 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 3 a 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 the exposed tin zones 7 has the advantage of limiting their aesthetic impact (blackening, darkening due to oxidation by the foodstuff), but also possibly of ensuring a delivery of tin well. distributed over the entire height of the conditioned 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 layer of multi-porous protective varnish 10, 11 is 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 tin 7 so as to obtain directly said protective layer 10 provided with pores 11.
  • the protective varnish applied consists 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 capable of being removed after the operation of application to the can body 1 so as to form the pores 11 (in practice, this dispersed fluid is advantageously 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 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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (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)

Claims (11)

  1. Verfahren zum Herstellen eines Behälters, der einen Behälterkörper (1) aufweist, der aus einem Bodenelement (2) besteht, das durch eine Seitenwand (3) verlängert ist, deren oberer Rand (4) eine obere Öffnung (5) begrenzt, die dazu bestimmt ist, ein Verschlußelement aufzunehmen, wobei der Behälterkörper (1) ein inneres Verpackungsvolumen (6) umschließt und eine wenigstens teilweise aus Zinn bestehende innere Oberfläche (7) aufweist, die mit einer Schutzschicht (10) versehen ist, die dazu bestimmt ist, der chemischen Wirkung des zu verpackenden Guts zu widerstehen, wobei das Verfahren vor dem Schritt des Auffüllens mit dem zu verpackenden Gut einen Schritt zum Erhalten der Schutzschicht (10), die, wenigstens über einen Teil ihrer Oberfläche verteilt, eine Anzahl von Poren (11) aufweist, durch deren jede hindurch eine davor liegende Zone (7a) der inneren Oberfläche (7) aus Zinn vom inneren Volumen (6) des Behälters her zugänglich ist, aufweist,
    wobei die Schutzschicht (10) aus einem Schutzlack besteht, der auf die innere Oberfläche (7) aus Zinn derart aufgetragen wird, daß vor dem Ausfüllen die Schutzschicht (10) erhalten wird, die Poren (11) für einen Zugang zur inneren Oberfläche (7) aus Zinn aufweist, dadurch gekennzeichnet, daß der aufgetragene Schutzlack aus einer Emulsion oder einer Dispersion besteht, die (i) den Schutzlack selbst und (ii) ein Fluid aufweist, das in dem Lack dispergiert ist und das geeignet ist, nach dem Vorgang des Auftragens auf den Behälterkörper (1) ausgeschieden zu werden, um die Poren (11) zu bilden.
  2. Herstellungsverfahren gemäß Anspruch 1, dadurch gekennzeichnet, daß das in dem Lack dispergierte Fluid aus einer Flüssigkeit besteht, die dazu bestimmt ist, durch natürliche oder aktive Verdunstung ausgeschieden zu werden.
  3. Herstellungsverfahren gemäß Anspruch 1, dadurch gekennzeichnet, daß das in dem Lack dispergierte Fluid aus einem Gas besteht.
  4. Herstellungsverfahren gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Prozentsatz an in dem Schutzlack dispergiertem Fluid im Verlaufe des Auftragens variiert.
  5. Herstellungsverfahren gemäß einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Poren (11) der Schutzschicht (10) gleichmäßig oder wenigstens annähernd gleichmäßig über die innere Oberfläche (7) aus Zinn verteilt sind.
  6. Herstellungsverfahren gemäß einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Poren (11) der Schutzschicht (10) auf einem Teil der inneren Oberfläche (7) aus Zinn zusammengefaßt sind.
  7. Herstellungsverfahren gemäß einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Poren (11) in einem Abstand vom oberen Rand (4) der Seitenwand (3) und unterhalb der Oberfläche des im Behälterkörper (1) zu verpackenden Guts angeordnet sind, um einen gleichmäßigen und von Poren (11) freien, mit einer Schutzschicht (10) versehenen oberen Streifen der Seitenwand (3) zu erhalten.
  8. Herstellungsverfahren gemäß einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Poren (11) der Schutzschicht (10) zufällig oder nicht zufällig angeordnet sind.
  9. Herstellungsverfahren gemäß einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Poren (11) der Schutzschicht (10) eine maximale Größe (d) von größer als 0,1 µm aufweisen.
  10. Herstellungsverfahren gemäß einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß jede der Poren (11) der Schutzschicht (10) eine Oberfläche zwischen 100 µm2 und 9 mm2 aufweist.
  11. Herstellungsverfahren gemäß einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Poren (11) der Schutzschicht (10) zusammen eine Oberfläche zwischen 10 % und 70 % der inneren Oberfläche des Behälterkörpers (1) aufweisen.
EP16151810.5A 2009-12-17 2010-12-16 Verfahren zur herstellung eines behälters in form einer konservendose mit innerer schutzbeschichtung Not-in-force EP3025977B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16151810T PL3025977T3 (pl) 2009-12-17 2010-12-16 Pojemnik w postaci puszki konserwowej z wewnętrzną warstwą ochronną

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
EP10807603.5A EP2512937B1 (de) 2009-12-17 2010-12-16 Dosenförmiger behälter mit innenschutzschicht

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP10807603.5A Division EP2512937B1 (de) 2009-12-17 2010-12-16 Dosenförmiger behälter mit innenschutzschicht
EP10807603.5A Division-Into EP2512937B1 (de) 2009-12-17 2010-12-16 Dosenförmiger behälter mit innenschutzschicht

Publications (2)

Publication Number Publication Date
EP3025977A1 EP3025977A1 (de) 2016-06-01
EP3025977B1 true EP3025977B1 (de) 2017-06-28

Family

ID=42134285

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10807603.5A Not-in-force EP2512937B1 (de) 2009-12-17 2010-12-16 Dosenförmiger behälter mit innenschutzschicht
EP16151810.5A Not-in-force EP3025977B1 (de) 2009-12-17 2010-12-16 Verfahren zur herstellung eines behälters in form einer konservendose mit innerer schutzbeschichtung

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP10807603.5A Not-in-force EP2512937B1 (de) 2009-12-17 2010-12-16 Dosenförmiger behälter mit innenschutzschicht

Country Status (17)

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

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EP3456219B1 (de) 2012-03-06 2022-12-28 Hydrapak LLC Flexibler behälter
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

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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 (de) 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
CN104044796B (zh) 2016-06-08
WO2011073583A1 (fr) 2011-06-23
KR20170023199A (ko) 2017-03-02
EP2512937B1 (de) 2016-03-30
PL3025977T3 (pl) 2017-11-30
PL2512937T3 (pl) 2016-09-30
RU2012130132A (ru) 2014-01-27
KR101837125B1 (ko) 2018-03-09
EP3025977A1 (de) 2016-06-01
DK2512937T3 (en) 2016-07-04
CA2784798A1 (fr) 2011-06-23
JP2013514240A (ja) 2013-04-25

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