WO1993023297A1 - Packaging container and method of producing the same - Google Patents
Packaging container and method of producing the same Download PDFInfo
- Publication number
- WO1993023297A1 WO1993023297A1 PCT/SE1993/000326 SE9300326W WO9323297A1 WO 1993023297 A1 WO1993023297 A1 WO 1993023297A1 SE 9300326 W SE9300326 W SE 9300326W WO 9323297 A1 WO9323297 A1 WO 9323297A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dovetail
- packaging container
- blank
- layer
- shaped
- Prior art date
Links
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
- B65D5/56—Linings or internal coatings, e.g. pre-formed trays provided with a blow- or thermoformed layer
- B65D5/60—Loose, or loosely attached, linings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/60—Uniting opposed surfaces or edges; Taping
- B31B50/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure, e.g. by welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/16—Lining or labelling
- B29C51/162—Lining or labelling of deep containers or boxes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/34—Coverings or external coatings
- B65D25/36—Coverings or external coatings formed by applying sheet material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2120/00—Construction of rigid or semi-rigid containers
- B31B2120/40—Construction of rigid or semi-rigid containers lined or internally reinforced
- B31B2120/402—Construction of rigid or semi-rigid containers lined or internally reinforced by applying a liner to already made boxes, e.g. opening or distending of the liner or the box
- B31B2120/406—Construction of rigid or semi-rigid containers lined or internally reinforced by applying a liner to already made boxes, e.g. opening or distending of the liner or the box the lining material being a plunger, a web, a sheet or a bag to be forced into the box, e.g. by using heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/60—Uniting opposed surfaces or edges; Taping
-
- 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
- B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D2565/38—Packaging materials of special type or form
- B65D2565/381—Details of packaging materials of special type or form
- B65D2565/385—Details of packaging materials of special type or form especially suited for or with means facilitating recycling
Definitions
- the invention relates to a packaging container and method of producing a packaging container comprising at least one inner layer and one outer layer, wherein said inner and outer layers are held together by mechanical anchoring means, said mechanical anchoring means comprising at least one portion formed on one of said layers.
- a packaging container is known from SE 350 943 or SE 353 876 for example.
- Containers of the above mentioned type are often formed as an inner plastics tray and an outer cardboard tray and are foreseen with a flange at the upper edge of the inner tray to which a reclosable lid can be fitted.
- a typical application for such a container is as a container for margarine or dairy products such as cheese spreads for example.
- a container which has an inner layer readily suitable for product storage, which can easily be combined with an outer layer which is strong, on which one can easily print and which allows separation for recycling but which still ensures secure attachment for processing purposes.
- the inner layer has very little stiffness and that the required stiffness is provided by the outer layer.
- the container according to the invention has the features defined in claim 1.
- the invention also concerns a method for forming such a container, the essential features of the method being defined in claim 12.
- Preferred features of the invention are defined in the dependent claims.
- dovetail-shaped anchoring portion in its most preferable form it is clear that the expression dovetail-shaped as used in the claims is not restricted to this preferred form. Thus, other examples, such as will be described later with regard to Fig.7, may also be considered as dovetail- shaped.
- the dovetail-shaped portion has at least one sloping side which overlaps the outer layer
- the lateral anchoring is enhanced. Not only does the resulting package look more attractive than the rivet type, but it can more easily be ejected from the mould and also more easily separated into inner and outer elements for recycling since the overlapping portions do not need to fully encompass the cut-out in the outer layer.
- the anchoring is further enhanced if the overlapping dovetail part(s) are also in pressure contact with the other layer, thus reducing to a minimum the possibility of the outer layer separating from the inner layer during processing.
- Recycling is a simple procedure.
- the outer part is merely pulled away from the inner part, whereby the overlapped portions of the outer layer deform sufficiently to spring past the dovetail projections.
- the most common method of manufacturing the container is to pressure and/or vacuum form the inner layer inside the already erected blank which is positioned in a female mould element.
- a preferable form of carrying out the method would then be as follows.
- a pre-cut and pre-printed blank of material (most normally being a fibrous material such as cardboard sheet and having the necessary folding denotations marked thereon) is transported to the empty female mould.
- a vacuum is applied , via appropriate tubing, to openings in the female mould surface.
- the cardboard blank is introduced into the mould, thus being erected by folding the side and end panels about the base portion along the folding denotations.
- a sheet or foil of plastics material, for example polypropylene, is brought to the mould and heated.
- Fig.l depicts one embodiment of a finished container according to the invention
- Fig.2 depicts a- view of one half of a symmetrical pre-cut blank foreseen with folding denotations for use as an outer layer of the container according to Fig.l;
- Fig.3 is a sectional view along line A-A in Fig.l;
- Fig.4 is a sectional view along line B-B in Fig.l;
- Fig.5 is an enlarged end view of the dovetail-shaped projection of Fig.4 in overlapping relation to the outer layer;
- Fig.6 is an enlarged end view of a second embodiment of the dovetail-shaped projection in overlapping relation to the outer layer.
- Fig.7 depicts a schematic representation of other dovetail- shaped anchoring means which can be used in accordance with the invention.
- the container of Fig.l consists of two layers, an inner layer 2 generally of a thermoformable material such as polypropylene, polystyrene or PVC for example and an outer layer generally of a non-thermoformable material such as cardboard.
- the outer layer will generally be printed with a description of the product and other information.
- plies may also be included in either of the layers if this is desired.
- the contours of the outer layer are visible in the inner layer. This is due to the manner of producing the container, whereby the plastics material of the inner layer- 2 has adapted its contour closely to the shape of the inside of the blank.
- the upper edge 9 of the outer layer is here shown to be slightly below the upper edge 3 of the inner layer 2. This is normally the case since, for easy moulding of the inner layer, the upper edge 9 must not project above the edge 3, which corresponds to the upper edge of the mould. Hence due to the tolerances which have to be allowed for, the upper edge 9 is normally slightly below the edge 3 by the order of 0 to 2 millimetres.
- Dovetail-shaped projections 4, 5 and 6 are positioned at the corners, ends and sides of the container respectively.
- the size of the dovetails may vary, such that larger projections are provided in the corners and smaller ones at the sides and ends.
- Reference numeral 3 indicates a closing flange to which a reclosable lid is normally applied.
- the flange also has the purpose of covering the upper cut edge 9 of the outer blank from normal view. For this reason the dovetail cut-outs are normally made in the upper edge 9 of the erected outer layer blank 1.
- the general form of the outer layer blank is depicted in Fig.2.
- the blank- is symmetrical and thus only one half is shown.
- the blank thus comprises side panels "b" and end panels “c” joined to a base panel “a” via fold lines (indicated in dashed lines).
- Dovetail-shaped cut-outs 4' ', 5 and 6" are made in the upper edge (when erected) of the blank and these will approximately align with recesses in the mould when the blank is positioned therein.
- fold lines 11 are foreseen on the outer surface of the outer layer for allowing the corner region to conform to a rounded shape.
- Fig.3 shows a sectional view along line A-A in Fig.l,. whereby the dovetail section 4 at the corner can be seen protruding from the inner layer 2.
- the dovetail portion 4 includes a lower edge portion 4' which overhangs the upper edge 9 of the outer layer. Whilst it is not shown as such, it would normally also be in contacting relationship therewith to provide additionally secure attachment.
- Fig.4 shows a view along the line B-B in Fig.l, being the dovetail section 5 at one end of the container.
- the dovetail section differs from that in Fig.3 in two main aspects. Firstly the outer surface of the dovetail is divided into two principal regions of different slope by a line 5' and secondly the lower edge of the dovetail only has a small overlap. Clearly however the base edge of the dovetail projection does not have to have any overlap at all but could be approximately flush with the upper edge 9 of the outer container blank or even spaced therefrom as shown in Figure 6.
- Figures 5 and 6 depict two enlarged views of different embodiments of dovetail-shaped projections 4 formed on the inner layer and corresponding dovetail cut-outs in the outer layer blank.
- the upper edge flange 3 has been removed for clarity.
- the embodiments differ from eachother mainly in that Fig.5 has the cut-out border 10 of the outer layer positioned totally inside the outer border of the dovetail- shape section formed on the inner layer, such that the dovetail projection overlaps the outer layer along the whole length of the sloping sides and the lower edge, whereas Fig.6 depicts a situation where only a portion of the sloping sides of the dovetail projection 4 overlaps the outer layer, since the upper edges of the cut-out border 10' are visible. Additionally the lower edge of the cut out is slightly below the lower edge of the projection. However it is clear that the lower edge of the dovetail projection may be flush with the cut-out, overlap it or be above it, - whichever is desired.
- Fig.5 apart from the two principal sloping surfaces at an angle to eachother and divided by the line 5 ', there are formed two additional sloping surfaces 20.
- the combination of these sloping surfaces 20 with the principal surfaces of the portion 5 has been found to be the optimum shape for assisting ejection from the mould after forming.
- Such a dovetail shape is however normally only used at the ends and sides, but not at the corners, since the corner portions do not generally present difficulties with respect to ejection, due to the curvature present.
- Fig.7 shows three further possibilities, seen only schematically of course, of possible dovetail-shaped mechanical anchoring means in accordance with the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Cartons (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP93910498A EP0639141A1 (en) | 1992-05-11 | 1993-04-15 | Packaging container and method of producing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9201509-8 | 1992-05-11 | ||
SE9201509A SE507648C2 (en) | 1992-05-11 | 1992-05-11 | Packaging containers and processes for their manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993023297A1 true WO1993023297A1 (en) | 1993-11-25 |
Family
ID=20386237
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1993/000326 WO1993023297A1 (en) | 1992-05-11 | 1993-04-15 | Packaging container and method of producing the same |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0639141A1 (en) |
AU (1) | AU4096893A (en) |
SE (1) | SE507648C2 (en) |
WO (1) | WO1993023297A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996039336A1 (en) * | 1995-06-06 | 1996-12-12 | Gics & Vermee, L.P. | Food product container including a tray and a jacket and an associated food product package |
WO1997002187A1 (en) * | 1995-07-04 | 1997-01-23 | Sandherr Packungen Ag | Deep-drawn plastic cup |
FR2826938A1 (en) * | 2001-07-04 | 2003-01-10 | Marie Claude Dropsy | Packaging tray is made from cardboard and has plastic lining which is heat molded inside it and extends over lip on tray, peripheral groove allowing lining to be glued in position and reinforcing lip |
FR2979329A1 (en) * | 2011-08-26 | 2013-03-01 | Cgl Pack Service | Tray for containing food, has reinforcement structure including sidewall reinforcement, where container is detachably secured to reinforcement structure by deformations bearing in contact face against outer face of sidewall reinforcement |
FR3111874A1 (en) | 2020-06-30 | 2021-12-31 | Groupe Guillin | Plastic packaging with cardboard frame or other bio-sourced material without gluing. |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3445050A (en) * | 1966-05-02 | 1969-05-20 | Unilever Nv | Package for foodstuffs |
SE313274B (en) * | 1968-10-03 | 1969-08-04 | Akerlund & Rausing Ab | |
SE350943B (en) * | 1971-09-14 | 1972-11-13 | Esseltepack Ab | |
SE353876B (en) * | 1971-11-03 | 1973-02-19 | Jeppsson Ab T | |
DK132582B (en) * | 1972-08-31 | 1976-01-05 | Unilever Nv | PACKAGING CONSISTING OF A TOP OPEN CONTAINER OF CARTON WITH LINING OF THERMOPLASTIC MATERIAL |
-
1992
- 1992-05-11 SE SE9201509A patent/SE507648C2/en not_active IP Right Cessation
-
1993
- 1993-04-15 WO PCT/SE1993/000326 patent/WO1993023297A1/en not_active Application Discontinuation
- 1993-04-15 AU AU40968/93A patent/AU4096893A/en not_active Abandoned
- 1993-04-15 EP EP93910498A patent/EP0639141A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3445050A (en) * | 1966-05-02 | 1969-05-20 | Unilever Nv | Package for foodstuffs |
SE313274B (en) * | 1968-10-03 | 1969-08-04 | Akerlund & Rausing Ab | |
SE350943B (en) * | 1971-09-14 | 1972-11-13 | Esseltepack Ab | |
SE353876B (en) * | 1971-11-03 | 1973-02-19 | Jeppsson Ab T | |
DK132582B (en) * | 1972-08-31 | 1976-01-05 | Unilever Nv | PACKAGING CONSISTING OF A TOP OPEN CONTAINER OF CARTON WITH LINING OF THERMOPLASTIC MATERIAL |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996039336A1 (en) * | 1995-06-06 | 1996-12-12 | Gics & Vermee, L.P. | Food product container including a tray and a jacket and an associated food product package |
WO1997002187A1 (en) * | 1995-07-04 | 1997-01-23 | Sandherr Packungen Ag | Deep-drawn plastic cup |
FR2826938A1 (en) * | 2001-07-04 | 2003-01-10 | Marie Claude Dropsy | Packaging tray is made from cardboard and has plastic lining which is heat molded inside it and extends over lip on tray, peripheral groove allowing lining to be glued in position and reinforcing lip |
FR2979329A1 (en) * | 2011-08-26 | 2013-03-01 | Cgl Pack Service | Tray for containing food, has reinforcement structure including sidewall reinforcement, where container is detachably secured to reinforcement structure by deformations bearing in contact face against outer face of sidewall reinforcement |
FR3111874A1 (en) | 2020-06-30 | 2021-12-31 | Groupe Guillin | Plastic packaging with cardboard frame or other bio-sourced material without gluing. |
EP3932822A1 (en) | 2020-06-30 | 2022-01-05 | Groupe Guillin | Plastic packaging with framework made from cardboard or another bio-sourced material without gluing |
Also Published As
Publication number | Publication date |
---|---|
EP0639141A1 (en) | 1995-02-22 |
SE507648C2 (en) | 1998-06-29 |
AU4096893A (en) | 1993-12-13 |
SE9201509D0 (en) | 1992-05-11 |
SE9201509L (en) | 1993-11-12 |
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