EP0246941A1 - Verpackungsverfahren für entwicklungsmässige Produkten, zum Beispiel Fleisch- oder Milchprodukte - Google Patents

Verpackungsverfahren für entwicklungsmässige Produkten, zum Beispiel Fleisch- oder Milchprodukte Download PDF

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Publication number
EP0246941A1
EP0246941A1 EP87400945A EP87400945A EP0246941A1 EP 0246941 A1 EP0246941 A1 EP 0246941A1 EP 87400945 A EP87400945 A EP 87400945A EP 87400945 A EP87400945 A EP 87400945A EP 0246941 A1 EP0246941 A1 EP 0246941A1
Authority
EP
European Patent Office
Prior art keywords
product
film
carbon dioxide
oxygen
packaging
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Withdrawn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
EP87400945A
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English (en)
French (fr)
Inventor
Louis Chauvin Bernard
Marie Regis Bureau Pierre
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.)
Savencia Holding SCA
Original Assignee
Soparind SCA
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 Soparind SCA filed Critical Soparind SCA
Publication of EP0246941A1 publication Critical patent/EP0246941A1/de
Withdrawn legal-status Critical Current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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • 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

Definitions

  • the invention relates to a process for packaging evolutionary products such as meat or milk food products, using a film having high oxygen and carbon dioxide permeability and low permeability to water vapor.
  • the invention also relates to a packaging for implementing the method.
  • the food product is vacuum-packed with a film impermeable to gases and to water vapor.
  • the food product is packaged in the presence of a body capable of modifying the atmosphere surrounding the product in the packaging: body storing water combined with a permeable enclosure (French patent 2,190,357); molecular sieve absorbing ethylene combined with a film whose permeability to carbon dioxide is between 5,000 and 100,000 ml / m 2 .24H. (French patent 2,407,872); body absorbing water vapor and carbon dioxide combined with a gas permeable film (French patents 2,583,066 and 2,418 175); preservative combined with a film having a permeability limited simultaneously to gases and water vapor (French patent 2,467,795) or impermeable (French patent 2,240,632).
  • a body capable of modifying the atmosphere surrounding the product in the packaging: body storing water combined with a permeable enclosure (French patent 2,190,357); molecular sieve absorbing ethylene combined with a film whose permeability to carbon dioxide is between 5,000 and 100,000
  • the food product such as a sausage is wrapped in an ambient atmosphere in an impermeable film.
  • the food product also such as a sausage
  • the food product is packaged under ambient atmosphere in a film pierced with macroperforations, that is to say open perforations with removal of material from the order of 5 mm in diameter.
  • US Patents 3,423,212 and 3,795,749 are packaging films for specific applications, having gas and water vapor permeability characteristics specially adapted for these applications.
  • the fila proposed has oxygen permeability between 200 and 1,000 cm 3 / inch 2 .24H, carbon dioxide between 600 and 800cm 3 / inch 2 .24H and water vapor greater than 40g / m 2 .24H.
  • these same permeabilities are respectively between 2,000 and 4,000 cm 3 / inch 2 .24H, between 10,000 and 25,000 cm 3 / inch 2 . 24H, between 6 and 25g / inch 2 .24H.
  • the applications of the films thus described are essentially food products having a certain humidity such as slices of meat or salad.
  • first variant a final stage
  • second variant a conventional presentation in particular with flowering powder such as talc is desirable both to satisfy the consumer and for the properties favorable by flowering.
  • the third variant (body modifying the atmosphere surrounding the product) has the disadvantage of increasing the volume of packaging due to the presence of the body in question, to be inconvenient for the user, to involve sufficiently rigid packaging, not to be permanent and constant because the effect of the body modifying the atmosphere decreases with time.
  • the various examples proposed in these patents also correspond to very specific applications: cheese ripening (French patent 2,190,357); conservation of flowers, fruits, vegetables (French patent 2,407,872); slower ripening of fruits and vegetables by lowering the humidity of carbon dioxide in the surrounding atmosphere.
  • the packaging under ambient atmosphere and waterproof film when applied to products such as sausages or dry sausages has the advantages of avoiding the weight loss of the product and of keeping it a certain flexibility. On the other hand, this process has the drawback of the development of anaerobic microorganisms and fermentation odors.
  • the packaging under ambient atmosphere and macroperforated film (perforations with removal of material of the order of 5 mm in diameter), when applied to products such as sausages or dry sausages, has as major drawback the excessive drying of the product, as if the product was not packaged with the consequences of significant weight loss and excessive hardness of the food product.
  • the packaging therefore has the sole function, in this case, of protecting the packaged food product against soiling by touch.
  • the packaging variants with specific permeabilities are not suitable for products other than those expressly concerned by these packaging.
  • the packaging according to European patent 0 167 477 is mainly intended for wet products. It does not prevent the risk of the development of undesirable microorganisms,. on the other hand, on the one hand because the packaged food product is confined, on the other hand because the gelatin is a culture medium favorable to the development of microorganisms.
  • the invention therefore aims to solve the problem of keeping evolving products such as meat or milk food products and in particular sausages or dry sausages under satisfactory economic conditions and in such a way that, simultaneously, the weight loss of the product is limited in particular for economic reasons, that consequently the product retains a certain flexibility over time, as desired by the consumer, and finally that the risk of fermentation or development of anaerobic microorganisms is avoided.
  • the state of the art does not allow these objectives to be achieved simultaneously, the use of vacuum being expensive, the use of a sealed package causing the degradation of aerobic microorganisms and / or the development of micro anaerobic organisms, the use of a macroperforated packaging causing a significant weight loss and the hardness of the product, the use of a packaging having a high permeability to water vapor does not make it possible to limit the weight loss .
  • the invention provides a method of packaging an evolving product in a simple or complex film which, in combination, has high oxygen and carbon dioxide permeabilities in particular greater than 2000 cm 3 / m .24H 2 and a permeability to water vapor low but nonzero particular between 5 and 40g / m .24H, said film having the effect at the same time to limit the weight loss of the product, to enable it to keep in time flexibility, and to prevent the risk of fermentation or development of microorganisms.
  • the product thus packaged can "breathe" freely, that is to say that the gaseous exchanges of oxygen and carbon dioxide are not prevented, without drying, the loss of water being prevented.
  • the process applies to all evolving products such as food, meat or milk products, or even vegetables or plants.
  • the film comprises micropitting consisting of a weakening of the film in its thickness, without perforation or removal of material, these micropicking being close to each other and distributed opposite the external surface of the product.
  • this packaging can be combined with a preliminary treatment of the product in order to prevent or limit the development of microorganisms.
  • FIG. 1 is a schematic elevation view of the product packaged according to the invention.
  • FIG. 2 is a schematic sectional view on a larger scale illustrating micropitting.
  • the invention relates to a method for packaging an evolving product 1, in particular a meat or milk food product and more especially a dry sausage or sausage, although this application is in no way limiting, any equivalent food product in terms of its properties with regard to the exchanges with oxygen, carbon dioxide and water vapor in a simple or complex plastic film 2.
  • Product 1 is preferably solid, monobloc, massive, for example of generally pseudo-cylindrical shape, without this being limiting.
  • the film 2 preferably forms the whole or, as a variant, only a part of the packaging of the product 1, the packaging being closed as a whole, in particular by welding or stapling.
  • the packaging can be, depending on its constitution, rigid or flexible or even deformable with - a certain strength.
  • the packaging is transparent in its entirety so as to allow view product 1 in full.
  • a film 2 which, in combination, has high oxygen and carbon dioxide permeabilities and a low but not zero permeability to water vapor.
  • the film 2 has the effect, simultaneously, of limiting the weight loss of the product, of allowing it to keep a certain flexibility over time and of preventing the risk of fermentation or of development of microorganisms.
  • the film 2 has for example, at room temperature, permeabilized with oxygen and carbon dioxide greater than 2000 cm 3 / m 2 .24H and a permeability to water vapor of between 5 and 40 g / m 2 . 24H.
  • the film 2 has as high a permeability as possible, in particular total, to oxygen and carbon dioxide and a low, but not zero, permeability to water vapor.
  • the product 1 is placed in the film 2 so that the latter is separated from the product 1 or has only points or lines or surfaces of contact limited with it in order to achieve, around the product 1 a gaseous atmosphere 3, continuous and of sufficiently large volume and in particular suitable for the volume of the product 1 and the surface area of its external surface 4.
  • This gaseous atmosphere 3 thus formed, allows respiration. gaseous product 1 and avoids the confinement of product 1 or areas thereof by the film 2.
  • the film 2 is in contact with the product 1 only on less than 10% of its external surface 4, the volume of the gaseous atmosphere 3 being of the same order of magnitude or even much greater than the volume of the product 1
  • the limited contact between product 1 and film 2 can be achieved in various ways, in particular by virtue of a certain resistance and an appropriate shape given to the packaging, respectively to a shape given to product 1.
  • the film 2 has, according to the invention, the function of avoiding the circulation of air in the gaseous atmosphere 3, along the external surface 4 and, therefore, makes it possible to maintain around the product 1 a clean static atmosphere. to prevent its superficial drying.
  • the film 2 also has the function of maintaining around the product 1 a gaseous atmosphere 3 whose composition of oxygen and carbon dioxide is equal to or close to that of the ambient atmosphere, the relative humidity level in the atmosphere 3 being at less equal to 85% and substantially independent of the relative humidity of the ambient atmosphere outside the film 2.
  • the surface of the film 2 is appropriate to that of the external surface 4, so as to allow the " gas respiration mentioned above, for example, the surface area of the film 2 is of the same order of magnitude or even much greater than the surface area of the external surface 4.
  • the film 2 preferably comprises micropitting 5 (Figure 2) which consist of a weakening of the film 2 in its thickness, without perforation or removal of material. These microtitches 5 are close to each other and distributed regularly opposite the external surface 4 of the product 1. These microtitches 5 have the function of ensuring the desired permeabilities to oxygen, carbon dioxide and water vapor. .
  • the microtitches 5 are spaced from each other by a distance of between 5 mm and 15 mm, and preferably equal to or close to 7 mm.
  • the microticks 5 are directed inward so that the packaging has a smooth outer surface.
  • microtitches 5 can be obtained, for example, by pressing the film 2 between two cylinders, the first comprising on its cylindrical surface radial needles and the second forming a counterpart and which may comprise a flexible coating elastically deformable radially, such as rubber or a foam made of plastic.
  • the spacing between the two cylinders and the protruding length of the needles are adjusted according to the thickness of the film 2 and the flexibility of the coating so that the needles can sink into the film and deform it in its thickness and transversely without however, pierce it.
  • the film 2 is a complex comprising at least one layer of polyethylene in particular situated towards the inside (that is to say on the side of the product 1) and allowing the welding. Also, in one possible embodiment, the film 2 is a complex comprising at least one layer of polyester or polypropylene in particular situated towards the outside (that is to say opposite to the product 1), allowing that the packaging has a certain hold.
  • the film 2 can be a complex comprising at least one layer of material having low permeability to oxygen and carbon dioxide and at least one layer of material having high permeability to oxygen and carbon dioxide and low permeability to water vapor.
  • the product 1 before packaging the product 1 in the film 2, the product 1 is subjected to a surface treatment in order to prevent or limit the development of microorganisms.
  • This treatment is for example an ionization of product 1 or even the coating of product 1 with a material forming a barrier to microorganisms.
  • This material is for example a food adhesive suitable for product 1 which polymerizes in air.
  • This food glue can coat product 1 after brushing and washing, then drain the product. Then, product 1 can be coated in a flowering powder ensuring an appropriate presentation to the product 1 such as a moisture-absorbing material, in particular talc.
  • the permeabilities of the film 2 used in the process according to the invention are clearly demonstrated by comparison with the films of the known state of the art.
  • Sample No. 1 is this complex as it is, that is to say practically impermeable to gases and water vapor.
  • Sample No. 2 is this complex comprising macroperforations, that is to say holes of the order of 5 mm in diameter and therefore completely permeable to gases and water vapor.
  • Sample No. 3 is this complex comprising microtitches such as those defined above.
  • the permeabilities obtained are those shown in the table below. Tests for implementing the invention have been carried out.
  • micropitted film according to the invention allows a very low weight loss since it cannot be measured combined with an absence of fermentation or the development of microorganisms and good flexibility of the product.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
EP87400945A 1986-04-23 1987-04-23 Verpackungsverfahren für entwicklungsmässige Produkten, zum Beispiel Fleisch- oder Milchprodukte Withdrawn EP0246941A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8605870 1986-04-23
FR8605870A FR2597832B1 (fr) 1986-04-23 1986-04-23 Procede d'emballage de produits evolutifs tels que des produits alimentaires carnes ou lactes au moyen d'un film presentant des permeabilites a l'oxygene et au gaz carbonique elevees et une faible permeabilite a la vapeur d'eau et emballage pour la mise en oeuvre du procede

Publications (1)

Publication Number Publication Date
EP0246941A1 true EP0246941A1 (de) 1987-11-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP87400945A Withdrawn EP0246941A1 (de) 1986-04-23 1987-04-23 Verpackungsverfahren für entwicklungsmässige Produkten, zum Beispiel Fleisch- oder Milchprodukte

Country Status (2)

Country Link
EP (1) EP0246941A1 (de)
FR (1) FR2597832B1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2958419A (en) * 1958-07-02 1960-11-01 Minnesota Mining & Mfg Stressed flexible containers
US3194668A (en) * 1963-04-08 1965-07-13 Herbert N Schlein Process for preparing radiation stabilized polyethylene and food package utilizing same
US3423212A (en) * 1964-11-20 1969-01-21 Union Carbide Corp Method for packaging food products
US3795749A (en) * 1972-03-31 1974-03-05 Borden Inc Packaging lettuce in carbon dioxide permeable film
FR2353207A7 (fr) * 1976-05-24 1977-12-23 Plastijo Sa Nouvelle feuille d'emballage et son procede de fabrication

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2958419A (en) * 1958-07-02 1960-11-01 Minnesota Mining & Mfg Stressed flexible containers
US3194668A (en) * 1963-04-08 1965-07-13 Herbert N Schlein Process for preparing radiation stabilized polyethylene and food package utilizing same
US3423212A (en) * 1964-11-20 1969-01-21 Union Carbide Corp Method for packaging food products
US3795749A (en) * 1972-03-31 1974-03-05 Borden Inc Packaging lettuce in carbon dioxide permeable film
FR2353207A7 (fr) * 1976-05-24 1977-12-23 Plastijo Sa Nouvelle feuille d'emballage et son procede de fabrication

Also Published As

Publication number Publication date
FR2597832A1 (fr) 1987-10-30
FR2597832B1 (fr) 1989-02-17

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Inventor name: CHAUVIN BERNARD,LOUIS

Inventor name: BUREAU PIERRE,MARIE REGIS