EP2050691A1 - Verpackungsbehälter, Verpackungsmaterial, das aus dem Deckel dieses Behälters besteht, und Herstellungsverfahren dieses Verpackungsmaterials - Google Patents

Verpackungsbehälter, Verpackungsmaterial, das aus dem Deckel dieses Behälters besteht, und Herstellungsverfahren dieses Verpackungsmaterials Download PDF

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Publication number
EP2050691A1
EP2050691A1 EP08356135A EP08356135A EP2050691A1 EP 2050691 A1 EP2050691 A1 EP 2050691A1 EP 08356135 A EP08356135 A EP 08356135A EP 08356135 A EP08356135 A EP 08356135A EP 2050691 A1 EP2050691 A1 EP 2050691A1
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EP
European Patent Office
Prior art keywords
tray
segments
rows
lid
film
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.)
Pending
Application number
EP08356135A
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English (en)
French (fr)
Inventor
Cyrille Bresson
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.)
IMMEUBLE LE LAVOISIER
Original Assignee
Alcan Packaging Food France SAS
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 Alcan Packaging Food France SAS filed Critical Alcan Packaging Food France SAS
Publication of EP2050691A1 publication Critical patent/EP2050691A1/de
Pending legal-status Critical Current

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    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/22—Details
    • B65D77/225—Pressure relief-valves incorporated in a container wall, e.g. valves comprising at least one elastic element
    • 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
    • B65D81/34—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 for packaging foodstuffs or other articles intended to be cooked or heated within the package
    • B65D81/3446—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 for packaging foodstuffs or other articles intended to be cooked or heated within the package specially adapted to be heated by microwaves
    • B65D81/3453—Rigid containers, e.g. trays, bottles, boxes, cups
    • 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
    • B65D2205/00—Venting means

Definitions

  • the present invention relates to the field of packaging, in particular food packaging. More specifically, the invention relates to a package, particularly food products for heating in a microwave oven. Even more particularly, the invention relates to a food packaging container intended to be heated in the microwave, this tray being of the type comprising a container closed by a seal consisting of a plastic packaging film sealed on the containers. lips of the opening of the container, so as to define a closed chamber containing the food product to be heated.
  • the packages discussed in this paper have a cover designed to act as a valve for venting the tray during microwave heating and tear opening when a certain temperature and pressure limit is reached. is reached. This function is provided by rupture lines (discontinuous slots) formed in the lid and acting as vents for evacuation of the steam emitted during the heating of the food product in the microwaves.
  • Food products are increasingly marketed in a partially or fully cooked form that requires heating and / or finishing their cooking in a microwave oven, directly in their sales packaging.
  • the microwave heating of these packages containing pre-cooked food products poses the problem of the increase in vapor pressure generated by the microwave heating which can lead, in extreme cases, to the explosion of the packaging in the microwave oven and / or the projection of hot products on opening after heating.
  • the lid of the food packaging for example trays, may have a number of ventilation openings that are initially provided in the packaging lid or that are practiced by the user before introduce the package into the microwave oven.
  • manufacturers are seeking to use packaging that avoids any manipulation by the user before microwave heating.
  • the user fails to spare holes in the cover or to remove the cover, it is important that safety means be provided which prevent any accident.
  • Another technical problem to be overcome for these packaging food products to be heated in the microwave is that of facilitating the opening of said packaging once the microwave heating has come to an end. This is to allow the user to easily remove the lid of the package (the tray), especially without the help of a utensil such as a knife or scissors and without risk of spilling the contents packaging and / or burning due to a sudden projection of steam at the opening.
  • the patent US-B-7045190 shows, in FIG. 20, a heat-resistant packaging constituted by a polypropylene container of parallelepipedal general shape, the opening of which is closed by a lid consisting of a polyethylene terephthalate (12 microns) and polypropylene (30 microns) bilayer ).
  • This lid is heat-sealed on the lips of the container and has, on the one hand, a portion (strip) A covered with a sealant with a low melting point, and, on the other hand, a discontinuous line (a) of slots a break.
  • this section line (a) expands and a small orifice is formed at the junction between the sealing strip A and the cutting line (a).
  • This small orifice (b) then forms a valve allowing the evacuation of the vapor formed inside the container of the package. It is by no means established that this packaging container has a particularly easy opening at the end of the microwave heating. In addition, the fact of providing a band A sealant on the closure lid of the container, represents a significant additional cost for such a package.
  • one of the essential objectives of the present invention is to provide an improvement to packaging trays, in particular for food products. intended to be heated in the microwave, said improvement including the optimization of the valve function of the lid of the tray and on allowing after tearing of the lid at the end of heating, an opening even easier by the user.
  • Another essential object of the invention is to provide improved packaging trays, especially for food products intended to be heated in microwaves, in which the control of the vapor pressure inside the packaging during the microwave heating, is perfectly designed to prevent any explosion hazard inside the microwave oven and any risk of hot projection on the user at the time of opening the tray.
  • Another essential objective of the invention is to provide improved packaging trays, especially for food products intended to be heated in the microwave, these containers must be liquid-tight and thus allow the packaging of products. liquids or likely to become so after microwave heating.
  • Another essential objective of the present invention is to provide improved packaging trays, particularly for food products intended to be heated in the microwave, these trays must be easy and economical to manufacture.
  • Another essential object of the present invention is to provide a new packaging material that can be used to form the seal of the improved trays as defined in the above objectives.
  • Another essential objective of the present invention is to provide a cost-effective and efficient manufacturing process of the packaging material defined in the above objective.
  • the present invention which relates first of all to a packaging tray (flexible or not) especially for food products intended to be heated in the microwave, this tray being closed by a lid from a film strip and designed to act as a valve for the evacuation of steam and / or an easy opening by tearing of the lid in one or more lines of rupture, since the contents of the heated tray in the microwave reaches a certain temperature; characterized in that the operculum comprises at least two discontinuous, substantially straight and parallel rows of rupture segments, said rows being longitudinal with respect to the film strip from which the lid is issued, so that the opening of the lid, in particular under the effect of the steam under the pressure produced during heating, is effected by traction on either side of the discontinuous rows of rupture segments.
  • the opening thus obtained is regular, controlled, reproducible and located substantially in the center of the operculum,
  • the two rows of rupture segments, straight, discontinuous and parallel are arranged such that, for at least a portion of the segments of the two rows, the center of each segment of the one of the rows is opposite the gap, preferably in the vicinity of the median of said gap, separating two contiguous segments from the other row.
  • the present invention also relates to the packaging material constituting the lid of the tray according to the invention.
  • the term "tray” designates stricto sensu, a tray and lato sensu any packaging container simple or not and closed by a cap, such as a flexible bag.
  • a packaging container for example a container
  • the packaging material from which the lid is made of at least two rows or discontinuous lines of rupture segment, straight and parallel to each other. Since this is a series and continuous packaging, the closure lid of the tray is obtained from a single or multilayer film strip, preferably made of plastic (polymer) and / or paper. This strip is unwound from a reel and the cutting and (thermo) sealing of the lids on the packaging trays is carried out at industrial rates.
  • the invention is more specifically adapted for food products intended to be heated in microwaves. Nevertheless, this possibility offered by the invention of an opening by transverse traction of a food tray seal can have many advantageous applications in the packaging whether the products are food or not and whether or not intended to be heated to micro -ondes.
  • the two rows of fracture segments, straight, discontinuous and parallel are arranged so that for at least a portion of the segments of the two rows, the center of each segment of one of the rows is opposite the interval, preferably in the vicinity of the median of said interval, separating two contiguous segments of the other row.
  • the rupture segments forming the straight and parallel discontinuous rows are staggered (offset) and can open by transverse traction in the manner of an accordion. This staggered disposition of the break segments imparts increased resilience to the break segments and concentrates the tensile forces between two adjacent break segments to initiate breakage.
  • the rows of rupture segments are arranged in the vicinity of the median longitudinal axis of the cover.
  • a certain tolerance is possible, which thus offers more flexibility in the industrial packaging process, especially with regard to the closing of the series of trays using a film strip unrolled (thermo) sealed on the trays, then cut, preferably at the same time as trays that have previously been shaped and filled with the product to be packaged.
  • each rupture segment is a slot or a zone of least resistance formed in the lid.
  • the variant in which the rupture segment is a slot naturally facilitates the opening of the lid. If necessary, it could be envisaged to combine slots and areas of least resistance as break segments in all or part of the segment rows.
  • At least one of the rows of rupture segments consists of an alignment of said rupture segments.
  • the rupture segments forming the rows could be non-aligned.
  • the seal is obtained by (thermo) sealing a cut piece in a strip of paper and / or polymer film unwound from a reel.
  • the lid of the tray according to the invention consists of at least one polymer film selected from the group comprising: non-barrier polymers [advantageously belonging to the subgroup comprising polystyrene (PS), high density polyethylene (HDPE), polypropylene (PP), medium barrier polymers (advantageously belonging to the subgroup comprising polyvinyl chloride (PVC), a polyester such as polyethylene terephthalate (PET), medium-density polyethylene (MDPE), a polyamide (PA)], high barrier polymers [advantageously belonging to the subgroup comprising PET coated eg with silica (PET and SiO) ethylene-vinyl alcohol (EVOH), polyvinylidene chloride (PVDC), polyacrylonitrile (PAN ), an amorphous polyamide (PA), a bioriente polyamide
  • the tray comprises a lid formed by a multilayer (eg colaminated with or without backing with the aid of an adhesive suitable for water, oxygen or carbon dioxide) preferably bilayer formed of two polymer films, a top film (preferably barrier, for example in air), for example HDPE, in which are provided the rows of rupture segments and a lower film preferably heat sealable.
  • a multilayer eg colaminated with or without backing with the aid of an adhesive suitable for water, oxygen or carbon dioxide
  • a top film preferably barrier, for example in air
  • HDPE high density polyethylene
  • the heat-sealable preferred character of the lower film may be intrinsic to the material constituting it (e.g. polyester such as PET) and / or may be provided by coating at least one heat-sealable layer.
  • This preferred mode is more particularly suitable for packaging food products intended to be heated in the microwave, in which case the lid of the tray is designed to open in a controlled and regular manner and centered under the effect of the steam pressurized water generated during heating.
  • the tray comprises a lid consisting of a monolayer film in which are provided the rows of rupture segments.
  • the nature and / or the thickness of the upper film and the lower film are advantageously chosen so that the upper film has an elongation characteristic to the rupture superior to that of the lower film.
  • the elongation at break (CAR) characteristic is for example measured using a standard dynamometric tensile test (NF EN ISO 527-3).
  • the films that can be used to produce the lid of the tray according to the invention are, for example, chosen from those having a CAR of between 100 N and 5000 N / 15 mm at 24 ° C.
  • This mechanical characteristic CAR comes naturally from the nature of the selected paper and / or polymer film and the thickness of the paper and / or polymer layer. It is possible according to the invention to play on these two parameters to obtain a lower support film (preferably heat sealable) and an upper film (preferably gas) clean to open under the effect of transverse traction on the part of and other rows of rupture segments, without the lower film tears.
  • the lower film and the upper film are preferably laminated, for example using an adhesive, preferably crosslinkable such as polyurethane, so that the adhesive contributes to the air barrier effect. clogging leaks.
  • polymers having a high CAR that is to say polymers that are part of the most rigid polymers or the most resistant to tearing
  • PA polyester such as PET
  • polypropylene polypropylene
  • Polypropylene in the form of a thinner layer, as well as low-density polyethylene -PEBD-, radical polyethylene or high-density polyethylene -PEHD-PET or PAO- may be less rigid or less tear-resistant layers capable of forming the lower film.
  • the upper film comprises polyamide and / or polyester, and has a thickness of between 5 and 100 microns; and the lower film comprises MDPE and / or HDPE and / or PP and / or PET, and / or PAO, and has a thickness of between 5 and 100 ⁇ m.
  • the films forming the layers may be rolled, for example ideally laminated using an adhesive, preferably crosslinkable such as polyurethane.
  • an adhesive preferably crosslinkable such as polyurethane.
  • the invention also relates to the packaging material consisting of one or more paper films and / or plastic polymer comprising a layer, namely the upper layer (in the case of a multilayer) in which are formed at least two rows of segments. rupture, for example slits as defined above.
  • This packaging material has the advantage of being in the form of a rollable film strip that lends itself perfectly to high-speed packaging industrial operations consisting in continuously scrolling, on the one hand, the contents (e.g. trays) filled with product to be wrapped and, on the other hand, a strip of film, to heat the latter on the containers, and to cut the sealed strip and the containers to obtain containers filled with the product to be packaged and sealed.
  • the manufacturing process of the packaging material according to the invention is simple and economical to implement since it consists of a material in the form of a single or multilayer strip, to provide break segments using a static tool selected from the group consisting of knife blades, preferably circular and rotary blades, laser cutting tools or high-pressure jet cutting tools.
  • a static tool selected from the group consisting of knife blades, preferably circular and rotary blades, laser cutting tools or high-pressure jet cutting tools.
  • any other suitable means for providing discontinuous slots in the monolayer or multilayer polymeric film webs (in the upper layer thereof) of the slot-type or zone-of-resistance fracture segments should be considered equivalent to the 'invention.
  • the invention also relates to a method of series and continuous packaging of products, (preferably food) of introducing into trays these products (for example food products) and to close these trays using a strip of packaging material referred to above that continuously scrolls which is sealed on the trays, then cut into lids preferably simultaneously with the cutting trays;
  • the figures 1 and 2 represent the packaging tray according to the invention.
  • this tray designated by the reference 1 is of parallelepipedal general shape.
  • This tray 1 comprises an upper opening 2 closed by a lid (or cover) 3 which is sealed by its edges on the upper lip 4 of the tray 1 delimiting the upper opening 2.
  • This sealing is advantageously a heat seal and / or sealing made using a suitable adhesive.
  • the lid 3 has two rows 5a, 5b discontinuous, substantially straight and parallel break segments 6a, 6b which may be slots or areas of lesser thickness of the lid, that is to say areas of least resistance 3. These two rows 5a, 5b are arranged in the vicinity of the central longitudinal axis of the lid 3, and therefore of the tray 1 since the lid is sealed thereon.
  • the rupture segments 6a, 6b preferably extend over the entire length of the cap.
  • each segment 6a, 6b is opposite the interval 7b, 7a separating two contiguous segments 6b 'and 6b "or 6a' and 6a" of the adjacent row 5b, 5a. More preferably still, the center of each segment 6a, 6b is disposed near the median of the interval 7b, 7a between the segments 6b 'and 6b "or 6a' and 6a" of the neighboring row 5b.
  • the rupture segments 6a, 6b in this case slits, are respectively aligned in the rows 5a, 5b, which extend over the entire length of the lid.
  • each slot 6a, 6b has a length of about 150 mm while the gaps 7a, 7b measure about 5 mm.
  • the ratio Lsr / Li is equal in this case to 30.
  • the distance d between the rows 5a, 5b of rupture segment is of the order of 8 mm.
  • the length L of the tray 1 is equal to the length Lra of at least one of the rows 5a, 5b of rupture segment 6a, 6b.
  • the ratio L / Lra is therefore equal to 1.
  • the tray 1 is made for example from a plastic polymer material of thickness and nature such that it gives adequate rigidity to said tray. Beyond the embodiment described here and in the case where the tray is a flexible packaging container (for example a bag) closed by a lid, the skilled person knows to choose the suitable polymer material.
  • the polymers used are conventional polymers of food packaging, such as polystyrene (PS), high density polyethylene (HDPE), polypropylene (PP).
  • PS polystyrene
  • HDPE high density polyethylene
  • PP polypropylene
  • the thickness of such a tray varies between 50 and 1000 microns, in this case the thickness is 80-100 microns.
  • Such food trays are obtained industrially by molding the polymer.
  • the lid 3 is constituted by at least one paper film and / or plastic polymer chosen from the group comprising non-barrier polymers (PS, HDPE, PP), medium barrier polymers (PVC, PET polyesters, medium-density polyethylene PEMDPA, high barrier polymers EVOH, polyvinylidene chloride PVDC, PAN, amorphous polyamides (PA) or radical polyethylene, PAO, LDPE).
  • PS non-barrier polymers
  • PVC medium barrier polymers
  • PET polyesters PET polyesters
  • medium-density polyethylene PEMDPA medium-density polyethylene
  • high barrier polymers EVOH polyvinylidene chloride PVDC
  • PAN amorphous polyamides
  • PA amorphous polyamides
  • radical polyethylene PAO, LDPE
  • the lid 3 is derived from a strip of film and / or polymer wound in a coil in an industrial manner and at a high rate, which is presented continuously, by unwinding the tape reel. film, next to the openings of the trays 1 containing the product eg food to be packaged. The film is then (thermo) sealed on the trays 1 to close them, then it finally proceeds to a cutting of the caps, preferably simultaneously with the cutting trays.
  • the rows 5a, 5b of rupture segments 6a, 6b, formed in the covers have a geometry and an arrangement particularly adapted to the industrial production of said breaking segments by cutting on these film strips. It is simply to make two parallel lines of break segments 5a, 5b located substantially in the center of the lid 3, which is relatively practical on an industrial level.
  • the figure 3 is a cross-section along line III-III of the figure 2 which shows a preferred embodiment bilayer of the seal 3 sealed on the lip 4 bordering or delimiting the upper opening 2 of the tray 1.
  • This bilayer 3 comprises a paper film and / or higher polymer, preferably barrier to the air, designated by the reference 8 and a paper film and / or lower polymer, preferably water barrier designated by reference 9.
  • the upper film 8 and the lower film 9 can be assembled to each other by coextrusion or any other suitable technique, in this case they are rolled together and assembled using an adhesive 10, for example consisting of a crosslinked adhesive based on polyurethane.
  • the figure 3 also shows a sealing layer 11 for sealing the cover 3 on the lip 4 of the tray 1.
  • This bonding layer may be constituted by the polymer material of the thermofused lower film 11 and / or by a suitable adhesive, for example polyethylene.
  • the rows of 5a, 5b of rupture segments in this case slits 6a, 6b, are formed only in the upper film 8.
  • the figure 3 shows a slot 6b disposed substantially in the central zone of the lid 3.
  • the nature and / or the thickness of the upper film 8 and the lower film 9 are chosen so that the upper film 8 has an elongation characteristic greater than that of the lower film 9
  • the upper film 8 is more rigid than the lower film 9.
  • the upper film 8 comprises, for example, a PA layer of 15 and 50 microns, a PET layer of 8 to 40 microns or a layer of PP from 12 to 50 microns.
  • the lower film 9 may be PP finer than the upper film 8, PP, MDPE, HDPE, PET, or high density PAO.
  • the upper film 8 and the lower film 9 are, for example, thermally bonded with an adhesive, for example a crosslinked glue based on polyurethane.
  • the polyurethane adhesive contributes to the air barrier function, in particular by sealing the slits 6a, 6b.
  • the lid 3 could possibly be colaminated with a metal film, for example aluminum and / or a paper film.
  • the Figures 5 and 6 show the behavior of the tray 1 closed by its lid 3 during heating in a microwave oven.
  • the preferred bilayer embodiment according to the figure 3 is specially designed for microwave heating food products that may be packaged in this tray 1.
  • the lid 3 is curved (cf. figure 5 ).
  • the lines or rows 5a, 5b of break segments or slots 6a, 6b on the figure 6 it appears that the vapor under pressure produced converges towards the center of the lid and exerts at this point, the most important forces.
  • there is a transverse traction represented by the arrows Ta and Tb on the figure 6 which traction causing the opening of the slits 6a, 6b offset accordion.
  • the opening is therefore regularly controlled reproducible and located in the center of the lid 3.
  • the safety valve function is thus ensured and safely, without degradation of the appearance of the lid 3.
  • the figure 7 shows the appearance of the lid 3 in the case where the contents of the tray 1 has reached a temperature such that the vapor pressure causes the opening by tearing of said lid 3.
  • the rows or lines 5a, 5b of segments or slots rupture 6a, 6b can define a controlled opening of the lid by tearing and the user can easily complete the opening operation with the tabs formed on the lid 3 after tearing, or by pinching the 'packaging.
  • the single-layer embodiment of the lid 3 according to the figure 4 is less suitable for microwave heating.
  • This seal 3 is constituted by a single film 12 of paper material and / or polymer chosen from polymeric materials of the same type as those mentioned above for the upper 8 and lower 9 films of the bilayer operculum of the figure 3 .
  • This paper and / or polymer film 12 is for example heat-sealed on the upper lip 4 of the tray 1, possibly using a polyurethane adhesive of the same type as that mentioned above. This heat-sealing gives rise to a bonding layer 13.
  • This type of packaging may be suitable for packaging food products such as chocolate bars.
  • the presence of rows 5a, 5b of segments or rupture slots 6a, 6b according to the invention offers consumers easy opening by tearing, by pulling on both sides of these rows 5a, 5b, to obtain a controlled regular opening reproducible and initiated by the center of the operculum 3.
  • the package according to the invention also has the advantage of opening according to the rows 5a, 5b of segments in rupture slots 6a, 6b, while keeping a part of the lid at the periphery, which allows to protect still a little content.
  • the lid opens (especially in case of removal in a microwave oven), the container (e.g. tray) remains intact and the content remains well inside the package.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Package Specialized In Special Use (AREA)
  • Packages (AREA)
EP08356135A 2007-10-17 2008-10-14 Verpackungsbehälter, Verpackungsmaterial, das aus dem Deckel dieses Behälters besteht, und Herstellungsverfahren dieses Verpackungsmaterials Pending EP2050691A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0707257A FR2922531B1 (fr) 2007-10-17 2007-10-17 Barquette d'emballage,materiau d'emballage constitue par l'opercule de cette barquette et procede de fabrication dudit materiau d'emballage

Publications (1)

Publication Number Publication Date
EP2050691A1 true EP2050691A1 (de) 2009-04-22

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EP08356135A Pending EP2050691A1 (de) 2007-10-17 2008-10-14 Verpackungsbehälter, Verpackungsmaterial, das aus dem Deckel dieses Behälters besteht, und Herstellungsverfahren dieses Verpackungsmaterials

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EP (1) EP2050691A1 (de)
FR (1) FR2922531B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010054023A1 (en) * 2008-11-04 2010-05-14 William Cho Pressure relief system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0531176A1 (de) * 1991-09-06 1993-03-10 Unilever Plc Verpackungsmaterial
US6068898A (en) * 1996-11-13 2000-05-30 Hitoshi Omoto Sheet films, packaging materials, and packaging using the same having pressure control valve
EP1563988A1 (de) * 2002-10-31 2005-08-17 Hispanosuiza de Patentes, s.L. Zum kochen in der mikrowelle verwendete, mit einem ventilausgestattete laminierte folie in form einer schale oder eines geschlossenenbeutels
WO2006034793A2 (de) * 2004-09-29 2006-04-06 Südpack Verpackungen Gmbh & Co. Materialbahn für verpackungen sowie verpackungs-behälter
US7045190B2 (en) 2000-04-26 2006-05-16 Hiromichi Inagaki Packaging material and packaged product
DE202007003168U1 (de) * 2007-03-01 2007-05-03 Maag Gmbh Verpackungs- Und Technische Folien Mehrlagige selbstentlüftende Verpackungsfolie

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0531176A1 (de) * 1991-09-06 1993-03-10 Unilever Plc Verpackungsmaterial
US6068898A (en) * 1996-11-13 2000-05-30 Hitoshi Omoto Sheet films, packaging materials, and packaging using the same having pressure control valve
US7045190B2 (en) 2000-04-26 2006-05-16 Hiromichi Inagaki Packaging material and packaged product
EP1563988A1 (de) * 2002-10-31 2005-08-17 Hispanosuiza de Patentes, s.L. Zum kochen in der mikrowelle verwendete, mit einem ventilausgestattete laminierte folie in form einer schale oder eines geschlossenenbeutels
WO2006034793A2 (de) * 2004-09-29 2006-04-06 Südpack Verpackungen Gmbh & Co. Materialbahn für verpackungen sowie verpackungs-behälter
DE202007003168U1 (de) * 2007-03-01 2007-05-03 Maag Gmbh Verpackungs- Und Technische Folien Mehrlagige selbstentlüftende Verpackungsfolie

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010054023A1 (en) * 2008-11-04 2010-05-14 William Cho Pressure relief system

Also Published As

Publication number Publication date
FR2922531B1 (fr) 2011-07-01
FR2922531A1 (fr) 2009-04-24

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