WO2002085720A2 - Emballage alimentaire etanche aux gaz et son procede de production - Google Patents

Emballage alimentaire etanche aux gaz et son procede de production Download PDF

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Publication number
WO2002085720A2
WO2002085720A2 PCT/EP2002/002526 EP0202526W WO02085720A2 WO 2002085720 A2 WO2002085720 A2 WO 2002085720A2 EP 0202526 W EP0202526 W EP 0202526W WO 02085720 A2 WO02085720 A2 WO 02085720A2
Authority
WO
WIPO (PCT)
Prior art keywords
tray
edge flange
packaging
trays
blank
Prior art date
Application number
PCT/EP2002/002526
Other languages
German (de)
English (en)
Other versions
WO2002085720A3 (fr
Inventor
Jochen Dietrich
Kurt RÖMER
Original Assignee
Pts Consulting Ag
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 Pts Consulting Ag filed Critical Pts Consulting Ag
Priority to EP02764013A priority Critical patent/EP1368241A2/fr
Publication of WO2002085720A2 publication Critical patent/WO2002085720A2/fr
Publication of WO2002085720A3 publication Critical patent/WO2002085720A3/fr

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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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/4266—Folding lines, score lines, crease lines
    • 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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/32—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper having bodies formed by folding and interconnecting two or more blanks each blank forming a body part, whereby each body part comprises at least one outside face of the box, carton or tray
    • B65D5/321—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper having bodies formed by folding and interconnecting two or more blanks each blank forming a body part, whereby each body part comprises at least one outside face of the box, carton or tray at least one container body part formed by folding up portions of a single blank connected to a central panel from all sides
    • 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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/56—Linings or internal coatings, e.g. pre-formed trays provided with a blow- or thermoformed layer
    • B65D5/563—Laminated linings; Coatings

Definitions

  • the invention relates to a food packaging according to the preamble of claim 23 and to a method for producing such a packaging according to claim 30, a semi-finished product or tray suitable therefor according to claim 1 in the form of rigidly arranged and film-lined trays and a method for producing it according to claim 24. as well as a shell part cutting element on which the tray is based, and a collar part cutting element according to claim 35.
  • this requires a strong initial thickness of up to 1000 ⁇ m in relation to the desired drawing depth and container shape in order to achieve the required residual wall thicknesses in the base radii.
  • the thinning leads to the formation of the plastic shells pulling plastic films in the base radii very often to so-called "kink breaks", which can occur especially during transport.
  • the barrier layer layer used in the production of the plastic shells preferably made of polyvinyl alcohol (EVOH), which ensures the required oxygen barrier and is embedded between the carrier film and the sealing layer when a so-called rigid film bond is used, shows a significantly poorer molding result, ie this EVOH layer also has small residual wall thicknesses.
  • EVOH polyvinyl alcohol
  • the plastic carrier material of the shells to be formed which is required for the dimensional stability, be equipped with a correspondingly strong oxygen barrier layer, which results in additional costs.
  • This oxygen barrier layer usually consists of polyvinyl alcohol.
  • a third film layer is required to be able to seal the lid film.
  • Such a shell is described for example in EP 0169799. It also discloses a method in which a large number of individual, separate trays are introduced into a filling or sealing station. The trays are successively lined with a thin plastic layer before they are filled with food and sent to a sealing station leads. In the sealing station, a cover film is sealed onto the dishes filled with food. This creates a bowl, the base material of which is essentially ground wood or foamed plastic.
  • the advantage of these packaging systems with such trays is that the packaging device can be clearly structured, and a modular arrangement of the device is also possible.
  • the food packaging proposed there has as a load-bearing basis a tray lined with a thin plastic composite film, which is composed of a first cardboard blank that can be erected automatically and a second cardboard blank that is glued to it via spreadable adhesive tabs.
  • the second cardboard blank forms an uninterrupted collar of the tray and thus provides a continuous surface for sealing the packaging.
  • the continuous, ie uninterrupted collar has advantages already when attaching the plastic film lining the inside of the packaging, since the best conditions are created for a large-area connection between the plastic film and the edge flange.
  • thermoforming and adhesive properties of the lining film must also be further optimized.
  • Another object is to provide a method for producing such a food packaging that can be carried out according to a simple process.
  • Another object of the present invention is to use gas-tight
  • Rough cuts on the intended fold edges have grooves that are embossed against the direction of the fold.
  • the or underlying blank semi-finished product and the associated folding both a tear and the build-up of a tensile stress leading to the material tear on the outside of the folded edges can be avoided.
  • the embossed grooves provide enough material to keep the cut in a relaxed state. Additional, problematic measures such as perforation or scoring can be omitted, since the creasing dictates a desired course of the fold.
  • the creasing bulges inwards even after the fold, a web remains on the inside of the prefabricated tray at the folded edges, so that when the lining plastic is deep-drawn, there is no need to pull all the way into the corners, thereby reducing the material thinning in the film can.
  • the advantages mentioned lead to an improved suitability of the tray according to the invention in relation to an improvement in the ratio of packaging size to packaging volume content, since both the flank angle at which the side walls protrude from the bottom of the tray and the depth of the tray and the ratio of these two. Sizes can be enlarged relative to one another compared to conventional packaging of this type.
  • problems which are attributed to perforated or scored fold edges no longer occur. Accordingly, there are no predetermined breaking points in the erected state. Gaping, which is additionally reinforced when the material is folded, with the angle of the fold, i.e. the flank angle of the packaging, is ruled out, so that the packaging is no longer weakened at the folded edges and moisture is no longer penetrated can come. That is why the tray is suitable also for use in extremely humid, steamy environments.
  • the grooving results in a tendency of the packaging base to bend, which at least partially prevents the base from being soaked up on a wet surface.
  • An embodiment of the tray according to the invention as claimed in claim 3 has, as a supporting base, a cardboard blank lined with a thin plastic composite film, which can be erected automatically and the inner region of which is glued to the cut edges.
  • Cardboard blank also has an edge flange with individual edge flange segments, to which the cover film is then attached.
  • the edge flange is shaped on the outside in such a way that the edge flange segments are in the sealing position close together.
  • the individual edge flange segments have miter cut lines, on the basis of which the angular position of the edge flange can then be determined.
  • the tray according to the invention is therefore equipped with an uninterrupted collar, which is thus a continuous surface for sealing the packaging provides.
  • the continuous, ie uninterrupted collar has advantages already when attaching the plastic film lining the inside of the packaging, since the best conditions are created for a large-area connection between the plastic film and the edge flange.
  • the decisive advantage is shown when sealing the packaging. This is because the uninterrupted surface of the edge flange, which is covered by the plastic film of the lining, offers optimal conditions for the largest possible sealing of the cover film. It has been shown that the working speeds of the packaging machine can be increased considerably in this way without running the risk of creating capillary-like radial channels between the cover film and the lining film, which would be detrimental to long-term sealing.
  • This design of the food packaging according to the invention does require a somewhat more complex structure of the packaging blank. It turns out, however, that the circumferential flange can be used in a particularly advantageous manner to stabilize the packaging tray, even if the connection between the tray components is only carried out selectively or in regions and not over the entire area.
  • the side flaps are preferably carried out on every second side wall section on both sides. It can be achieved that the The area of overlap of the side flaps with the adjoining side wall sections becomes maximum and that the side flaps are either designed only on the inside or only on the outside. As a result, a surface can be flat, which is particularly advantageous in terms of printing on the outer packaging surface or lining the inner surface of the packaging tray.
  • the tabs of the edge flange and the side tabs of the side walls are fastened, preferably glued, to the inside of the side walls of the shell part, there is the particular advantage that the entire outside of the side walls is suitable for printing, i.e. can be used as information and advertising space.
  • the tray according to the invention is particularly suitable for a semi-finished product made of cardboard.
  • the tray according to the invention is preferably equipped with a cardboard blank, which according to claim 15 consists of a recyclable or preferably two-ply carton, a pre-food packaging product is created which is suitable for bearing a special advertising effect on the outer layer of the carton blank , In particular, this creates a possibility for inventing to emphasize appropriate food packaging optically.
  • the design according to claim 15 has the particular advantage that the surface structure of the tray is adapted to the specific requirements.
  • the plastic film heated during molding quickly forms an intimate connection with the surface of the shell part.
  • the second, i.e. inner layer can easily consist of recycled cardboard, which saves costs and achieves special advantages in terms of environmental compatibility.
  • an adhesive varnish which has a temperature band character for gluing the tabs of the edge flange and the side tabs of the side walls to the inside of the side walls of the shell part.
  • the adhesive varnish it is possible to pre-coat the cardboard blanks with the adhesive varnish, since it does not grip when it is cold, and to carry out the required gluing by briefly warming up during the assembly process. Compared to conventional methods with hot / cold glue, this can save even more time be achieved.
  • the adhesive varnish remains dimensionally stable during a subsequent film lining of the tray at high temperatures.
  • a three-layer plastic film composite has proven to be particularly suitable as a lining film in order to meet the requirements of oxygen tightness, intimate connection with the inner wall of the cardboard and good peelability of the overall film.
  • the plastic composite film has an oxygen barrier layer, preferably made of polyvinyl alcohol, a sealing layer, preferably made of peelable polyethylene, and an adhesive layer, preferably made of modified polyethylene, a flexible composite is used, the oxygen permeability of which can be determined in advance and is not changed even in the embedded state. Therefore, a significantly thinner oxygen barrier, which is embedded in a flexible composite, can be used.
  • the peelability of the plastic film results in excellent environmental compatibility. As has surprisingly been found, the plastic film can be kept extremely thin and still stabilize the tray, even if it consists of simple cardboard, in such a way that even relatively deep packaging can be produced with sufficient stability.
  • an adhesive layer made of a copolymer of ethylene with 6% methacrylic acid which has been partially (50%) neutralized with Na or zinc ions (Surlyn A) has been found to be particularly suitable ,
  • the adhesive force can be varied analogously to the comonomer content and the melting point of the film is low enough at about 85 ° C to ensure that the adhesive layer during heating of the film composite, which is used to make the film flowable for deep drawing, is the first to soften, melts and forms an intimate connection with the cardboard wall.
  • the adhesive layer is made of acid-modified ethylene / acrylate polymer Resins with medium to high acid-comonomer proportions and temperature-resistant esters, especially made from Bynel of the 2000 series (eg Bynel 2002), as these resins allow strong adhesion between different materials.
  • This material is very good for Suitable for coating paper and cardboard and adheres well to polyamide; it is therefore particularly suitable for oxygen barrier layers made of polyamide and for use in multilayer films.
  • the melting point of the material is approx. 87 ° C - 91 ° C in the desired range.
  • EVA Ethylene vinyl acetate polymers
  • Melting point (approx. 70 ° C - 95 ° C) have good adhesive properties on a wide range of materials.
  • a mixture of polyamide with approximately 20% amorphous nylon resin or amorphous polyamide resin is preferably used for the oxygen barrier layer arranged centrally in the film composite.
  • the layer becomes amorphous and is therefore easy to deep-draw.
  • the mixing causes the barrier layer to thin less in the corners and therefore remains impermeable even after deep-drawing in relatively deep or steep trays.
  • the melting point (Selar PA: approx. 250 ° C) is so high that it is guaranteed that the adhesive layer is in any case sufficiently heated until the barrier layer has warmed up.
  • a barrier layer of preferably 32% EVOH, mixed with preferably 15-20% of a thermoplastic ethylene / methacrylic (E / MAA) copolymer, the acid function of which has been partially neutralized with ions, such as Surlyn 7928, is appropriate.
  • E / MAA thermoplastic ethylene / methacrylic
  • the improved deep-drawing behavior can achieve a good oxygen barrier effect even with steep side walls or deep trays.
  • a low film thickness of 100-150 ⁇ m has resulted, depending on the depth of the tray and the steepness of its side walls.
  • the tray can be equipped with almost any shape, the particular advantages being achievable when the shell part exceeds a certain minimum depth and / or a certain steepness of the flank angle between the side wall and the bottom is achieved.
  • the base preferably has a rectangular shape, but a polygon shape would also be conceivable.
  • Food packaging is the subject of claim 23.
  • an oxygen-tight cover film which preferably contains EVOH as a barrier layer
  • edge flanges which are designed as sealing webs and lie between the interior of the carrier shell, are supported from below by means of slide and guide rails aligned parallel to the transport direction.
  • a further development is also advantageous in that the containers are supported in the filling section from below by means of a support belt running synchronously with the transport device.
  • the trays are preferably made locally and temporally separate from the process of filling and packaging the food packaging and thus the production of the trays remains independent of the filling and packaging of the entire packaging, they can already be sold as a preliminary product or manufactured by specialized packaging manufacturers , while the actual food packaging can be carried out by the food distributor.
  • the manufacturing process of the tray, which is separated from the filling of the packaging according to the invention, also offers the required environmental conditions
  • the trays often have to be filled in a humid and warm environment. Such environmental conditions would, however, be unfavorable in the manufacture of the trays, particularly with regard to the still unprotected against moisture, since they are still uncoated Inside of the cardboard blank.
  • the plastic film starting materials such as amorphous nylon resins (Selar PA) for the barrier layer also attract moisture in the initial state and are then difficult to process.
  • the trays are only exposed to moisture in the pre-fabricated state, all surfaces of the tray are protected against the ingress of moisture, which means that the reject rate can be significantly reduced.
  • the bonding according to claim 26 is carried out by activating a temperature-dependent adhesive lacquer located on the cut of the shell part and / or on the cut of the collar, the heating tools required for this can be easily integrated into the molds necessary for shaping the raw tray by heating them be carried out. The resultant heating of the trays thereby anticipates part of the thermal energy required for deep-drawing the lining film.
  • the food packaging according to the invention can be finished in a rational manner. Outsourcing the tray prefabrication brings Space savings and lower fixed costs due to unnecessary machines.
  • the lined trays according to the invention there is a container which is oxygen-tight up to one side, namely the upper side, when it enters the vacuuming or sealing station.
  • the plastic-lined cardboard blank also has a particularly high dimensional stability in the area of the peripheral edge flange, this edge flange can be securely accommodated between the seals of the closed sealing tool, so that, according to the invention, only the inner cavity of the shaped carrier shell has to be evacuated.
  • the power consumption of the packaging system for generating the evacuation is reduced, the cycle number of the packaging system can be increased considerably as a result.
  • FIG. 1 shows a schematic side view of a packaging system for carrying out the method of producing the tray according to the invention
  • FIG. 2a shows an exploded view of a first embodiment of the cardboard parts of the tray according to the invention for use in the production of a packaging according to the invention
  • FIG. 2b shows a schematic illustration of erected cardboard blanks arranged in a row according to a further embodiment of the tray according to the invention
  • FIG. 2c shows an exploded view of a modification of the cardboard parts of the tray according to the invention for use in the production of a packaging according to the invention
  • FIG. 3 shows a plan view of a cardboard blank for the collar of the packaging according to FIG. 2;
  • Fig. 4 shows a plan view of the associated cardboard blank for the shell part
  • FIG. 6 shows an enlarged illustration of a folded edge according to the invention
  • FIG. 7 shows a schematic view of the device necessary for erecting and gluing the cardboard frame of a tray
  • FIG. 8 shows a schematic view of the tool of the forming station FS.
  • FIG. 1 shows the side view of the manufacturing plant for the trays, which essentially has four main stations, namely a separating device W9, a stapling station HS for attaching a lining film 134 for prefabricated trays, a forming station (FS) in which the plastic film in the trays are molded, and preferably a two-stage Separation system 181, 182, the latter can also be designed in one stage.
  • a separating device W9 a stapling station HS for attaching a lining film 134 for prefabricated trays
  • FS forming station
  • the latter can also be designed in one stage.
  • AS erection station
  • those in an erection station are prefabricated in their own process, i.e. erected and glued cardboard blanks 110 nested in a magazine or dispenser 112 and accessible from there to the separating device W9. They are placed - preferably in rows with 2 to 5 trays next to each other - clock-controlled with the aid of the preferably pneumatically operating separating device W9 onto a conveyor belt 111, with which the trays are further transported clock-controlled to a transfer station US.
  • the method can be integrated by connecting it upstream of the separating device W9.
  • the at least one tray 110 is also lift-controlled in a clock-controlled manner by means of an excavation station 114 by means of a special transport stamp 113 into the plane EKF of the plastic film 134 and into the area of the stapling station HS, in which the lining film is preferably punctually by means of a heated stamp 118 is tacked to the leading and / or trailing areas of the edge flange of the trays.
  • the actual molding or lining process of the molding station begins Analogous to the inline process, trays 110 supplied by means of the plastic, preferably the plastic composite film 134.
  • the lining of the inner surface of the cardboard trays 110 arranged in rows with one another is carried out with an oxygen-blocking plastic composite film 134, which is explained in more detail below in connection with FIG. 8.
  • the plastic composite film 134 is drawn from an endless roll 133, which is fastened on a support arm above the inlet section of the packaging system, via deflection rolls, not specified, over the trays 110 arranged in rows in the receptacles essentially parallel to the transport chain 148 and runs as in the inline -Procedure from.
  • the number of trays lined up per row or work cycle can vary as required.
  • the trays 110 which are now connected by the plastic composite film 134, can be supported by a support belt which works in sync with the transport chain.
  • the finished, internally coated trays are then again conveyed to the singulation stations 181, 182 by means of the transport chain, it being possible for the trays 110, which are arranged in a row in a row, to be supported again by a conveyor belt 150 which operates in the same cycle.
  • the transport path of the transport chain 148 and the support belt 150 extends from the dispenser to immediately behind the two-stage singling station 181, 182, so that the entire Plant works in time. It is also possible to use complete punching and separation of the individual food packaging. In the case of a complete punching, the second stage of separation is therefore omitted. After leaving the singling station, the finished single trays are available.
  • the working width of the device is of course not limited. However, it has been shown that the widths should be at least about 420 mm in order to keep the economy of the device at a particularly high level.
  • the semi-finished products or raw trays 10 passing through this production process according to a first embodiment are shown in an exploded view in FIG. 2a. According to the invention, they have specially designed edge flanges 52 which are formed by a continuous collar which is placed on a shell part 40.
  • FIG. 2a shows the two components of the raw tray 10 of this embodiment in the preformed state, the collar 52 and the shell part 40 in an already erected and connected, preferably glued state, immediately before the parts are assembled and connected to one another, preferably glued.
  • Both parts are designed as a cardboard blank, preferably a two- or multi-layer cardboard is used, so that the outside of the tray can have a different quality than the inside, so that the outside is suitable for printing and as a carrier for an adhesive varnish, whereas the Inside has a roughness necessary for the lining film to adhere well.
  • the smoothness of the outer surface can be achieved, for example, by coating or painting.
  • FIG. 2b shows, in perspective, erected cardboard blanks 10b according to a second embodiment, which are arranged in rows, as may be desired when the manufacturing method described above is run through. Overlap sections or adhesive tabs 55 between adjacent wall sections of the carrier shells can be seen. However, there is no overlap in the area of the edge flange or the edge flange segments 52b, so that a coherent, stepless sealing surface can be created based on the miter-cut, mutually supporting edge flange segments 52b.
  • Figure 2c shows a somewhat modified design of the blank for the tray.
  • the continuous collar 452 is placed exactly over the angled edge flange segments 444 of the side walls 443 of the shell part 440 and is thus firmly connected, preferably glued. It can be designed without tabs, but this makes it difficult to fit onto the edge flange segments 444 becomes. For this reason, tabs 452 can also be attached to the collar 452, as indicated by dashed lines in FIG. 2c, although the gluing takes place between the underside of the continuous collar 452 and the top of the edge flange elements 444 in order to facilitate fitting.
  • X denotes those areas on which adjacent wall segments 443 are connected to one another by adhesive or overlapping tabs 443 A.
  • a side flap is implemented on each wall segment 443.
  • adhesive tabs or side tabs are on both sides of each second wall segment 43, 43a.
  • FIGS. 3 and 4 the blank parts or the blanks from which the tray components of the first embodiment are formed are shown in detail in the top view.
  • the cut element of the collar forming the edge flange 52 according to the embodiment of the tray of a shell part and a collar shown in FIG. 2a is - as shown in FIG. 3 - cut such that an annular collar 52 has trapezoidal and triangular tabs 51 on the inside, which are coated with temperature-sensitive adhesive varnish (indicated by dashed lines) and hang on the edge flange over fold edges or predetermined crease lines 8a.
  • the adhesive varnish is applied to the smooth, lacquered or coated surface of the cutting element, since it adheres better there and is not absorbed by the roughened cardboard on the opposite side.
  • the collar is so with a corresponding shell part glued so that the roughened surface of the collar part points into the interior of the tray in order to provide a rough surface for better adhesion of the lining film.
  • the predetermined folding lines 8a are designed as grooves 53 stamped into the cardboard blank.
  • Such a groove 53 stamped into the box is shown in FIG. 6.
  • the creasing is carried out in the direction of the bend (indicated by the two arrows) in order to avoid tension on the outside of the fold edge or the predetermined fold line during the erection of the blank or during the fold. It is shown that when the cardboard blank is erected (bending in the direction of the two arrows), the material compressed in the groove 53 leads to the fact that when the cardboard is erected there is no tear, but a material thickening on the inside of the angle formed.
  • the circumferential collar cut shown in FIG. 3 is preferably grooved on the side which, when the tray is assembled, points outwards. It is thereby achieved that the bead which arises during the folding of the folding grooves does not stand in the way of a precisely fitting insertion of the circulating collar semi-finished product into the erected semi-finished shell product. A bursting of the cardboard on the inside can be accepted since it is protected by the lining film when assembled.
  • the shell part 40 of the two-part embodiment of the tray is formed from a cutting element according to FIG. 4.
  • a bottom part 41 hang over grooved Kink lines 8a, the side wall sections 43, which touch in the erected state.
  • side flaps 7a, 7b on both sides, which are coated with adhesive varnish (see dashed line in FIG. 4) with which the side wall sections are glued together after the cutting element has been erected, so that a stable shell part is produced.
  • the adhesive varnish is applied to the smooth surface of the cutting element, so that the side or adhesive tabs 7a, 7b lie on the inside of the wall sections 43, in order not to hide a pressure applied to the outside of the cutting element.
  • fold edges, or crease lines 8b between the side flaps 7a, 7b and side wall sections 43 which have such, can be grooved or non-grooved, since the kink angle between the side wall section 43 and side flaps 7a, 7b is relatively small in the erected state.
  • these fold lines can also be perforated or scored if small angles occur between the corresponding side wall sections 43 which make it difficult to fold or erect the cutting element into the desired final shape.
  • Collar part cutting element to enable a continuous, continuous edge flange.
  • the device required for erecting and gluing the cardboard frame of a raw tray 10, a base shape and a heatable stamp, is shown in a schematic view in FIG. In a bottom shape
  • the cardboard blank 40 is erected and precisely stabilized by means of an air suction device 319.
  • Aligned above the bottom shape is the upper shape 318, which carries the erected collar with edge flange 52.
  • Forms 316, 318 are moved together after an adhesive, preferably a temperature-dependent one, is applied to one of the surfaces of side walls and / or tabs that overlap
  • Adhesive varnish was heated and thus made adhesive.
  • a heating device 320 is provided, which is designed as an electrical heater with an ohm 'see consumer 321, which is located at the level of the adhesive tabs of the collar inserted into the upper mold 318.
  • the Areas to which the adhesive is applied are indicated in different shapes, which is intended to express that there is a variety of design variations depending on the load profile of the trays.
  • hot or cold glue can be used or another heating system can be used.
  • the tray in the forming station (FS) is lined with a gas-tight composite film attached in the stapling station.
  • the tool of the molding station FS which works according to the so-called skin method, consists of a lower mold 116 and an upper mold 118, which are moved apart and moved together in a clocked manner according to the arrow shown in FIG. 8.
  • the lower mold 116 preferably has a profile for positively receiving the cardboard blanks 10, so that the edge flanges 52 of the cardboard blanks 10 are supported in a sealed manner.
  • the upper mold 118 is also designed so that a heating device 172 can be accommodated. With 173 and 173A there are recesses in the upper and lower part 116, 118 shown, which are designed according to the recessed grips provided on the edge flanges.
  • the upper tool part 118 is ventilated while the lower tool part 116 is evacuated. This change creates a differential pressure of approx. 1 bar, which causes full-surface heat lamination between the plastic composite film and the inside of the tray (see dashed line 134A).
  • the forming station FS Since the inner surfaces of the closely aligned cardboard blanks are now lined with the plastic composite film, the forming station FS is opened at the same time, which means that the plastic film connected connected trays are released and transported to be filled with the transport chain 148.
  • the tray rows are made sterile or sterile after leaving the forming station FS using a special device. This is advantageously a so-called "hydrogen peroxide shower".
  • FIG. 5 (section along the edge flange 52 of a raw tray 10 with a composite film 134 lying thereon) shows the individual layers forming the composite film 134.
  • the plastic composite film 134 has an oxygen barrier layer 136, a sealing layer 138, preferably made of peelable polyethylene, and an adhesive layer 137. It has been shown that the inner coating of the carrier material forming the food packaging can be made extremely thin.
  • the film thickness is preferably in the range of the residual wall thicknesses in the base radii between 25 and 30 ⁇ m.
  • the plastic composite film 134 can also be constructed and its behavior controlled so that it can be detached from the cardboard carrier after the packaging has been used, so that pure components are available for disposal or recycling.
  • the finger hole recess GM also serves this purpose.
  • a so-called tray sealer is a suitable device.
  • the cover film is preferably also made of a plastic composite film 134 which contains an oxygen barrier layer which is covered on the side facing the cardboard blank by a peelable plastic layer, preferably made of modified polyethylene. This layer then forms the sealing seams with the plastic composite film 134 via sealing webs of the edge flanges.
  • a composite combination of films from the polyolefin group can be used. This composite combination can be recycled as a monofilm. It has been shown that this regranulate can be used as a filling material in the field of PE heavy film production.
  • the blanks can of course also consist of other materials, such as cellulose, which also appear to be suitable, also with regard to their environmental compatibility.
  • the stability of the tray is considerably improved, particularly via the edge flanges designed according to the invention.
  • the plastic composite film 134 loses considerable flexibility and additionally stiffens the entire tray over the edge flanges.
  • the cardboard Due to the subsequent sealing with the cover film over the peripheral flange, the cardboard cut an additional torsional stiffness or dimensional stability.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Cartons (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)

Abstract

L'invention concerne une barquette destinée à un emballage et comprenant une collerette de bordure périphérique. L'intérieur de la barquette peut être revêtu d'un film plastique, notamment d'un film multicouche plastique, qui englobe la collerette de bordure, une découpe réalisée préalablement formant le fond, les parois latérales et la collerette de bordure de l'emballage. L'invention vise à réduire au minimum l'absorption d'humidité. A cet effet, des rainures (53) sont réalisées au niveau des arêtes de pliage, et ce du côté où l'angle entre les surfaces des parois de la barquette est supérieur à celui du côté opposé.
PCT/EP2002/002526 2001-03-08 2002-03-07 Emballage alimentaire etanche aux gaz et son procede de production WO2002085720A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02764013A EP1368241A2 (fr) 2001-03-08 2002-03-07 Emballage alimentaire etanche aux gaz et son procede de production

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001111232 DE10111232A1 (de) 2001-03-08 2001-03-08 Gasdichte Lebensmittelverpackung sowie Verfahren zu deren Herstellung
DE10111232.7 2001-03-08

Publications (2)

Publication Number Publication Date
WO2002085720A2 true WO2002085720A2 (fr) 2002-10-31
WO2002085720A3 WO2002085720A3 (fr) 2003-03-20

Family

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Family Applications (1)

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PCT/EP2002/002526 WO2002085720A2 (fr) 2001-03-08 2002-03-07 Emballage alimentaire etanche aux gaz et son procede de production

Country Status (3)

Country Link
EP (1) EP1368241A2 (fr)
DE (1) DE10111232A1 (fr)
WO (1) WO2002085720A2 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20080542A1 (it) * 2008-09-08 2010-03-08 Villani S P A Contenitore per il confezionamento di prodotti alimentari, in particolare salumi, carne e pesce
WO2018057064A1 (fr) * 2016-09-23 2018-03-29 Empire Technology Development Llc Emballage alimentaire pliable et ensemble produit alimentaire conditionné
DE102019109911A1 (de) * 2019-04-15 2020-10-15 Ar Packaging Gmbh Verfahren zum Herstellen eines Behälters mit einer Barrierefolie und Behälter mit einer Barrierefolie
DE102019122139A1 (de) * 2019-08-17 2021-02-18 Sonopress Gmbh Zuschnitt, Verpackungsschale für Lebensmittel und Verfahren zur Herstellung derselben
EP3831593A1 (fr) 2019-12-06 2021-06-09 AR Packaging GmbH Procédé de fabrication d'emballages à partir d'une matière plate de carton et d'un feuille barrière
EP3733531B1 (fr) 2019-05-03 2021-07-14 Ulma Packaging Technological Center, S.Coop. Procédé et machine d'emballage de produits
DE102021112460A1 (de) 2021-05-12 2022-11-17 Illig Maschinenbau Gmbh & Co. Kg Vorrichtung und Verfahren zum Aufrichten von Zuschnitten und Verbinden der Zuschnitte mit Blisterhauben in Verpackungsmaschinen

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GB2435029A (en) * 2006-02-10 2007-08-15 Andre Philip Wilkins Paperboard packing trays for hermetic sealing
US9266640B2 (en) 2008-07-12 2016-02-23 Jarl Jensen Retail boxes and method of manufacturing retail boxes
PT3326928T (pt) * 2016-11-28 2019-09-19 Packable Bv Embalagem para empacotamento e método de atmosfera modificada
EP3939897A1 (fr) * 2020-07-13 2022-01-19 AR Packaging GmbH Procédé de fabrication d'emballages à partir d'un matériau plat contenant de la cellulose doté d'un rebord périphérique et d'un film barrière
EP3988463A1 (fr) * 2020-10-20 2022-04-27 Solidus Solutions Videcart, S.A. Conditionnement thermosoudable et procédé de fabrication associé
CN112776368A (zh) * 2020-12-30 2021-05-11 蔡治顺 塑料垃圾桶或塑料果盘自动包边机
DE102021117622A1 (de) 2021-07-08 2023-01-12 Multivac Sepp Haggenmüller Se & Co. Kg Verfahren zum herstellen einer verpackung und verpackung
WO2024100164A1 (fr) * 2022-11-10 2024-05-16 Mm Packaging Gmbh Contenant, ébauche et emballage
EP4368529A1 (fr) * 2022-11-10 2024-05-15 MM Packaging GmbH Récipient, flan et emballage

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EP0169799A1 (fr) 1984-07-23 1986-01-29 United Technologies Corporation Clavette antirotation pour douille à baionnette

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DE8508377U1 (fr) * 1985-03-21 1987-06-19 Unilever N.V., Rotterdam, Nl
DE19654230A1 (de) * 1996-12-23 1998-07-02 Jochen Dietrich Lebensmittelverpackung, Verfahren zur Herstellung einer sauerstoffdichten Verpackung, Vorrichtung zur Durchführung eines derartigen Verfahrens und dabei verwendete zusammenhängende Kartonschnitte
DE19828381A1 (de) * 1998-06-25 1999-12-30 Jochen Dietrich Lebensmittelverpackung sowie Verfahren, Zuschnitt und Vorrichtung zu deren Herstellung

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EP0169799A1 (fr) 1984-07-23 1986-01-29 United Technologies Corporation Clavette antirotation pour douille à baionnette

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20080542A1 (it) * 2008-09-08 2010-03-08 Villani S P A Contenitore per il confezionamento di prodotti alimentari, in particolare salumi, carne e pesce
WO2018057064A1 (fr) * 2016-09-23 2018-03-29 Empire Technology Development Llc Emballage alimentaire pliable et ensemble produit alimentaire conditionné
DE102019109911A1 (de) * 2019-04-15 2020-10-15 Ar Packaging Gmbh Verfahren zum Herstellen eines Behälters mit einer Barrierefolie und Behälter mit einer Barrierefolie
EP3725492A2 (fr) 2019-04-15 2020-10-21 AR Packaging GmbH Procédé de fabrication d'un récipient doté d'une feuille barrière et récipient doté d'une feuille barrière
EP3733531B1 (fr) 2019-05-03 2021-07-14 Ulma Packaging Technological Center, S.Coop. Procédé et machine d'emballage de produits
US11597543B2 (en) 2019-05-03 2023-03-07 Ulma Packaging, S. Coop. Methods and apparatus for packaging products
DE102019122139A1 (de) * 2019-08-17 2021-02-18 Sonopress Gmbh Zuschnitt, Verpackungsschale für Lebensmittel und Verfahren zur Herstellung derselben
EP3831593A1 (fr) 2019-12-06 2021-06-09 AR Packaging GmbH Procédé de fabrication d'emballages à partir d'une matière plate de carton et d'un feuille barrière
DE102021112460A1 (de) 2021-05-12 2022-11-17 Illig Maschinenbau Gmbh & Co. Kg Vorrichtung und Verfahren zum Aufrichten von Zuschnitten und Verbinden der Zuschnitte mit Blisterhauben in Verpackungsmaschinen

Also Published As

Publication number Publication date
EP1368241A2 (fr) 2003-12-10
WO2002085720A3 (fr) 2003-03-20
DE10111232A1 (de) 2002-09-19

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