FR2639002A1 - Method of manufacturing a demoulding container and containers obtained according to this method - Google Patents
Method of manufacturing a demoulding container and containers obtained according to this method Download PDFInfo
- Publication number
- FR2639002A1 FR2639002A1 FR8814745A FR8814745A FR2639002A1 FR 2639002 A1 FR2639002 A1 FR 2639002A1 FR 8814745 A FR8814745 A FR 8814745A FR 8814745 A FR8814745 A FR 8814745A FR 2639002 A1 FR2639002 A1 FR 2639002A1
- Authority
- FR
- France
- Prior art keywords
- container
- cover
- manufacturing
- demoulding
- chimney
- 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
Links
Classifications
-
- 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
-
- 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
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
- B65D85/72—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials
-
- 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
- B65D2231/00—Means for facilitating the complete expelling of the contents
- B65D2231/02—Precut holes or weakened zones
- B65D2231/027—Precut holes or weakened zones for discharging a solidified or gelatinous products, e.g. pudding, ice-cream, from the package
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
Abstract
Description
PROCEDE DE FABRICATION D'UN RECIPIENT A DEMOULAGE ET
RECIPIENTS OBTENUS SELON CE PROCEDE
La présente invention a pour objet un procédé de fabrication d'un récipient permettant le démoulage du produit qui y est contenu, ainsi que les récipients obtenus selon ledit procédé.METHOD FOR MANUFACTURING A DEMOLD CONTAINER AND
CONTAINERS OBTAINED ACCORDING TO THIS PROCESS
The present invention relates to a method of manufacturing a container allowing the release of the product contained therein, as well as the containers obtained by said method.
Il est connu de présenter des produits pâteux, du type yaourths, crèmes, pâtés ou analogues, dans des récipients en matière plastique, par exemple en polystyrène ou en polypropylène. Afin de faciliter d'une part l'empilage des récipients vides et, d'autre part, le démoulage éventuel des produits, il est connu de donner à ces récipients un volume de forme tronconique ou en tronc de pyramide. La dépouille ainsi constituée permet en principe de démouler le produit.It is known to present pasty products, of the yoghurt, cream, pâté or similar type, in plastic containers, for example made of polystyrene or polypropylene. In order to facilitate on the one hand the stacking of the empty containers and, on the other hand, the possible demolding of the products, it is known to give these containers a volume of frustoconical shape or in truncated pyramid. The skin thus formed allows in principle to demold the product.
Malheureusement, lors de l'introduction du produit dans le récipient, l'air est chassé et lorsque l'on ouvre le couvercle, il est souvent impossible de démouler proprement le produit. En effet, la pression atmosphérique qui ne s'exerce que sur l'une des faces de celui-ci le maintient collé contre le fond et les parois latérales du récipient. La solution au problème du démoulage consiste, après avoir ouvert le récipient, à pratiquer dans le fond un petit orifice qui rétablit l'équilibre de pression et permet au produit de glisser contre les parois latérales du récipient.Unfortunately, during the introduction of the product into the container, the air is expelled and when the lid is opened, it is often impossible to cleanly unmold the product. Indeed, the atmospheric pressure which is exerted only on one of the faces of this one keeps it stuck against the bottom and the side walls of the container. The solution to the demolding problem consists, after opening the container, in making a small hole in the bottom which restores the pressure balance and allows the product to slide against the side walls of the container.
La présente invention a pour objet la fabrication d'un récipient permettant un démoulage aisé.The present invention relates to the manufacture of a container allowing easy demolding.
On connaît dans le domaine des récipients, notamment en matière plastique, des moyens d'ouverture faisant appel à la déchirure d'un opercule, dans lequel est formée une zone de moindre résistance reliée à une languette ou anneau de tirage.Are known in the field of containers, in particular plastic, opening means calling upon the tearing of a cover, in which is formed a zone of least resistance connected to a pull tab or ring.
FR-A-2 383 834 décrit un procédé de fabrication d'un récipient tel qu'un gobelet ou bouteille en matière plastique. Le couvercle est thermoformé en meme temps que les parois latérales et un fond est rapporté après remplissage. Lors du moulage du récipient, une feuille de couverture est disposée sur la face de couvercle et on amène en regard de cette face un tronçon de bande revêtu d'une couche collante, après quoi on découpe la feuille de couverture en introduisant à l'intérieur du récipient, un poinçon, puis l'on fixe définitivement la bande sur le couvercle du récipient. Le procédé décrit concerne uniquement l'ouverture d'un récipient c'est-à-dire de la face de couvercle.FR-A-2 383 834 describes a method of manufacturing a container such as a plastic cup or bottle. The cover is thermoformed at the same time as the side walls and a bottom is added after filling. During the molding of the container, a cover sheet is placed on the cover face and a section of strip coated with an adhesive layer is brought opposite this face, after which the cover sheet is cut by inserting inside of the container, a punch, then the strip is permanently fixed on the lid of the container. The method described relates only to the opening of a container, that is to say from the cover face.
Dans le cas d'un pot à démoulage tel que celui qui est visé par la présente invention, il ne s'agit pas d'ouvrir le récipient qui est muni d'un couvercle traditionnel, mais simplement de perçer une petite ouverture dans le fond du récipient pour équilibrer la pression à l'intérieur de celui-ci.In the case of a demoulding pot such as that which is the subject of the present invention, it is not a question of opening the container which is provided with a traditional lid, but simply of piercing a small opening in the bottom of the container to balance the pressure inside it.
Selon la présente invention, le procédé de fabrication d'un récipient à démoulage, comprenant une languette arrachable lors de la première ouverture, est caractérisé en ce que l'on forme lors du moulage du récipient, dans le fond de celui-ci, une cheminée, et que l'on pose en reprise un opercule détachable scellé sur la partie supérieure de la cheminée.According to the present invention, the method of manufacturing a demoulding container, comprising a pull-out tab during the first opening, is characterized in that a mold is formed in the bottom of the container, a chimney, and that one removes a detachable seal sealed on the upper part of the chimney.
Ainsi, il n'y a pas lieu de procéder à une découpe supplémentaire à l'intérieur du récipient thermoformé.Thus, there is no need to make an additional cut inside the thermoformed container.
On utilise en fait un inconvénient du procédé de fabrication par thermoformage. En effet, lors de thermoformage la matière est étirée d'une manière irrégulière, et elle est plus étirée, donc plus fine, sur les bords du récipient. Ceux-ci sont donc plus fragile. Par la formation d'une cheminée, on introduit volontairement une zone de fragilisation supplémentaire, le haut de la cheminée étant moins épais que les parois de celle-ci. De plus, lors du scellement de l'opercule, la matière fond partiellement, et devient encore plus fine. Il en résulte qu'en tirant sur l'opercule, la partie supérieure de la cheminée se détache aisément des parois latérales de celle-ci, ce qui produit une ouverture de passage de l'air rendant possible un démoulage par glissement du produit sur les parois latérales du récipient.A drawback of the thermoforming manufacturing process is in fact used. Indeed, during thermoforming the material is stretched in an irregular manner, and it is more stretched, therefore finer, on the edges of the container. These are therefore more fragile. By forming a chimney, an additional weakening zone is deliberately introduced, the top of the chimney being thinner than the walls of the latter. In addition, when sealing the lid, the material partially melts, and becomes even finer. As a result, by pulling on the cover, the upper part of the chimney is easily detached from the side walls of the latter, which produces an air passage opening making it possible to demold by sliding the product on the side walls of the container.
D'autres caractéristiques et avantages de l'invention apparaitront au cours de la description qui va suivre d'un mode particulier de réalisation, donné uniquement à titre d'exemple non limitatif, en regard des dessins qui représentent - la figure 1, une vue en coupe verticale d'un récipient selon
l'invention, après son remplissage - la figure 2, une coupe verticale du même récipient montrant
l'ouverture de fond du récipient en vue de son démoulage - la figure 3, une vue partielle, à échelle agrandie, du fond
d'un récipient selon l'invention.Other characteristics and advantages of the invention will appear during the description which follows of a particular embodiment, given solely by way of nonlimiting example, with reference to the drawings which represent - FIG. 1, a view in vertical section of a container according to
the invention, after filling - figure 2, a vertical section of the same container showing
the bottom opening of the container for demolding - Figure 3, a partial view, on an enlarged scale, of the bottom
of a container according to the invention.
Sur la figure 1, le récipient est représenté avant ouverture.In Figure 1, the container is shown before opening.
Il se compose, comme connu en soi, d'une paroi latérale 1, fermée par un fond 2 solidaire de la paroi latérale et par un couvercle 3. Le couvercle 3 est un couvercle connu qui peut être par exemple scellé sur la collerette du récipient. Par contre, le fond 2 thermoformé avec la paroi latérale présente une structure particulière. En effet, on forme dans le fond 2, une zone creuse 8, à partir de laquelle fait saillie une cheminée 4 qui, dans l'exemple représenté est centrale, dont la surface supérieure 6 est en alignement avec le creux 8 du fond. Après réalisation d'un récipient tel que celui qui est représenté sur la figure 1, on dispose dans le creux 8 un opercule ou languette 5. L'opercule 5 prend appui d'une part dans la partie creuse 8, et d'autre part sur l'extrémité supérieure 6 de la cheminée.Le scellement contre la languette 5 et le fond 6 est obtenu, par exemple, par thermocompression. De préférence, l'opercule 5 est revêtu d'une couche interne 9 (figure 3) d'adhésif du genre "Hot Melt". Alors que la partie 6, en raison du thermoformage était déjà amincie, le scellement l'amincit encore, et dans certains cas, provoque sa fusion totale, mais l'opercule 5 protège le fond de toute fuite. Après quoi le pot peut etre retourné et rempli de façon habituelle (figure 1), et il est obturé par un couvercle 3 qui est par exemple scellé.It consists, as known per se, of a side wall 1, closed by a bottom 2 secured to the side wall and by a cover 3. The cover 3 is a known cover which can for example be sealed on the flange of the container . On the other hand, the thermoformed bottom 2 with the side wall has a particular structure. In fact, a hollow zone 8 is formed in the bottom 2, from which protrudes a chimney 4 which, in the example shown is central, the upper surface 6 of which is in alignment with the hollow 8 of the bottom. After making a container such as that which is shown in FIG. 1, there is in the hollow 8 a cover or tongue 5. The cover 5 is supported on the one hand in the hollow part 8, and on the other hand on the upper end 6 of the chimney. The sealing against the tongue 5 and the bottom 6 is obtained, for example, by thermocompression. Preferably, the cover 5 is coated with an internal layer 9 (FIG. 3) of adhesive of the "Hot Melt" type. While part 6, due to thermoforming was already thinned, the seal thins it further, and in some cases causes its total fusion, but the cover 5 protects the bottom from any leak. After which the pot can be turned over and filled in the usual way (Figure 1), and it is closed by a cover 3 which is for example sealed.
Le récipient est ensuite stocké et acheminé sur le lieu de consommation. A ce moment, et comme celà apparaît sur la figure 2, le consommateur retire dans un premier temps le couvercle 3, ce qui ouvre le récipient à sa partie supérieure.The container is then stored and transported to the place of consumption. At this time, and as shown in Figure 2, the consumer first removes the cover 3, which opens the container at its upper part.
Puis il retourne le pot et exerce une traction sur l'opercule 5. Celui-ci se décolle de son siège 8 et provoque l'arrachement du chapeau 6 de la cheminée, ce qui permet une entrée d'air, et l'équilibrage de la pression de part et d'autre du pot. Le contenu de celui-ci peut alors glisser dans une assiette ou dans un plat, sous son propre poids. Then he turns the pot over and exerts traction on the cover 5. The latter comes off from its seat 8 and causes the cap 6 to be torn off from the chimney, which allows air to enter, and the balancing of pressure on either side of the pot. The contents of it can then slide into a plate or a dish, under its own weight.
La présente invention vise également les pots ou récipients obtenus par le procédé selon l'invention qui présentent dans leur fond au moins une cheminée sur le sommet de laquelle est scellé un opercule arrachable.The present invention also relates to the pots or containers obtained by the method according to the invention which have at their bottom at least one chimney on the top of which is sealed a tear-off lid.
Il va de soi que de nombreuses variantes peuvent être introduites, notamment par substitution de moyens techniquement équivalents sans pour autant sortir du cadre de l'invention. It goes without saying that many variants can be introduced, in particular by substitution of technically equivalent means without departing from the scope of the invention.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8814745A FR2639002A1 (en) | 1988-11-14 | 1988-11-14 | Method of manufacturing a demoulding container and containers obtained according to this method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8814745A FR2639002A1 (en) | 1988-11-14 | 1988-11-14 | Method of manufacturing a demoulding container and containers obtained according to this method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2639002A1 true FR2639002A1 (en) | 1990-05-18 |
Family
ID=9371799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8814745A Pending FR2639002A1 (en) | 1988-11-14 | 1988-11-14 | Method of manufacturing a demoulding container and containers obtained according to this method |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2639002A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2719828A1 (en) * | 1994-05-13 | 1995-11-17 | Yoplait Sa | Packaging pot for moulded food product |
| EP0734971A1 (en) * | 1995-03-31 | 1996-10-02 | A.R.C.I.L. | Thermoformed plastic container, e.g. for food products, and apparatus for its manufacture |
| EP0764586A1 (en) * | 1995-09-22 | 1997-03-26 | Dacor N.V. | Receptacle for food and applications of such a receptacle |
| WO1999028214A1 (en) * | 1997-12-03 | 1999-06-10 | Gerhard Bauer | Bowl for containing a piece of cake |
| WO2006051383A1 (en) * | 2004-11-12 | 2006-05-18 | Nutrifrais S.A. | Dessert package provided with a support for two compartments |
| ES2525268A1 (en) * | 2014-05-06 | 2014-12-19 | Joaquim Alberti, S.A. | Container for food (Machine-translation by Google Translate, not legally binding) |
| EP3623315A1 (en) * | 2018-09-17 | 2020-03-18 | Landgenossenschaft Ennstal LANDENA KG | Container for containing a feed |
| IT201800010436A1 (en) * | 2018-11-20 | 2020-05-20 | Cesare Palamara | CONTAINER FOR PRODUCTS EQUIPPED WITH DEVICE FOR THEIR SHAPING |
| RU2809131C2 (en) * | 2018-09-17 | 2023-12-07 | Ландгеноссеншафт Эншталь Ландена Кг | Animal feed container |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2082272A5 (en) * | 1970-03-09 | 1971-12-10 | Gervais Danone Sa | |
| DE2300383A1 (en) * | 1973-01-05 | 1974-07-18 | Heinrich Wagner | MUGS MADE OF PLASTIC OR METAL FOR IN PARTICULAR PLASTIC OR SEMI-SOLID MASSES, E.G. FOOD |
| US4154345A (en) * | 1978-02-22 | 1979-05-15 | Sweetheart Plastics, Inc. | Food product containers and the method and apparatus for manufacturing same |
| EP0060411A1 (en) * | 1981-03-12 | 1982-09-22 | Tetra Laval Holdings & Finance SA | Opening arrangement for packing container |
| DE3130522A1 (en) * | 1981-08-01 | 1983-02-17 | Société d'Application Plastique, Mécanique et Electronique Plastimécanique S.A., 14700 Falaise | Packaging container for potable foods |
-
1988
- 1988-11-14 FR FR8814745A patent/FR2639002A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2082272A5 (en) * | 1970-03-09 | 1971-12-10 | Gervais Danone Sa | |
| DE2300383A1 (en) * | 1973-01-05 | 1974-07-18 | Heinrich Wagner | MUGS MADE OF PLASTIC OR METAL FOR IN PARTICULAR PLASTIC OR SEMI-SOLID MASSES, E.G. FOOD |
| US4154345A (en) * | 1978-02-22 | 1979-05-15 | Sweetheart Plastics, Inc. | Food product containers and the method and apparatus for manufacturing same |
| EP0060411A1 (en) * | 1981-03-12 | 1982-09-22 | Tetra Laval Holdings & Finance SA | Opening arrangement for packing container |
| DE3130522A1 (en) * | 1981-08-01 | 1983-02-17 | Société d'Application Plastique, Mécanique et Electronique Plastimécanique S.A., 14700 Falaise | Packaging container for potable foods |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2719828A1 (en) * | 1994-05-13 | 1995-11-17 | Yoplait Sa | Packaging pot for moulded food product |
| EP0734971A1 (en) * | 1995-03-31 | 1996-10-02 | A.R.C.I.L. | Thermoformed plastic container, e.g. for food products, and apparatus for its manufacture |
| FR2732311A1 (en) * | 1995-03-31 | 1996-10-04 | Arcil | THERMOFORMED PLASTIC CONTAINER, FOR EXAMPLE FOR FOOD PRODUCTS, AND ITS MANUFACTURING TOOLS |
| EP0764586A1 (en) * | 1995-09-22 | 1997-03-26 | Dacor N.V. | Receptacle for food and applications of such a receptacle |
| BE1010533A3 (en) * | 1995-09-22 | 1998-10-06 | Imp Meat Products Naamloze Ven | RECIPIENT FOR A FOOD PRODUCT AND APPLICATIONS OF SUCH A RECIPIENT. |
| WO1999028214A1 (en) * | 1997-12-03 | 1999-06-10 | Gerhard Bauer | Bowl for containing a piece of cake |
| WO2006051383A1 (en) * | 2004-11-12 | 2006-05-18 | Nutrifrais S.A. | Dessert package provided with a support for two compartments |
| FR2877920A1 (en) * | 2004-11-12 | 2006-05-19 | Nutrifrais S A Sa | PACKAGING FOR DESSERT WITH MOUNTING COMPRISING TWO COMPARTMENTS |
| ES2525268A1 (en) * | 2014-05-06 | 2014-12-19 | Joaquim Alberti, S.A. | Container for food (Machine-translation by Google Translate, not legally binding) |
| EP3623315A1 (en) * | 2018-09-17 | 2020-03-18 | Landgenossenschaft Ennstal LANDENA KG | Container for containing a feed |
| WO2020058243A1 (en) | 2018-09-17 | 2020-03-26 | Landgenossenschaft Ennstal Landena Kg | Container for receiving animal feed |
| CN112714743A (en) * | 2018-09-17 | 2021-04-27 | 兰德盖诺森斯查弗特恩斯塔尔兰德纳两合公司 | Container for holding animal feed |
| JP2022501281A (en) * | 2018-09-17 | 2022-01-06 | ラントゲノッセンシャフト エンシュタル ランデナ コマンティドゲゼルシャフト | Container for storing feed |
| RU2809131C2 (en) * | 2018-09-17 | 2023-12-07 | Ландгеноссеншафт Эншталь Ландена Кг | Animal feed container |
| IT201800010436A1 (en) * | 2018-11-20 | 2020-05-20 | Cesare Palamara | CONTAINER FOR PRODUCTS EQUIPPED WITH DEVICE FOR THEIR SHAPING |
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