FR2607432A1 - Method for manufacturing articles such as containers provided with labels, as well as the articles obtained by implementing this method - Google Patents
Method for manufacturing articles such as containers provided with labels, as well as the articles obtained by implementing this method Download PDFInfo
- Publication number
- FR2607432A1 FR2607432A1 FR8616731A FR8616731A FR2607432A1 FR 2607432 A1 FR2607432 A1 FR 2607432A1 FR 8616731 A FR8616731 A FR 8616731A FR 8616731 A FR8616731 A FR 8616731A FR 2607432 A1 FR2607432 A1 FR 2607432A1
- Authority
- FR
- France
- Prior art keywords
- label
- labels
- material constituting
- mold
- container
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims abstract description 8
- 239000012815 thermoplastic material Substances 0.000 claims description 13
- 238000007664 blowing Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 2
- -1 polyethylene Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 238000010101 extrusion blow moulding Methods 0.000 abstract description 2
- 229920001169 thermoplastic Polymers 0.000 abstract description 2
- 239000004416 thermosoftening plastic Substances 0.000 abstract description 2
- 235000011837 pasties Nutrition 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 5
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/24—Lining or labelling
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/24—Lining or labelling
- B29C2049/2412—Lining or labelling outside the article
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/24—Lining or labelling
- B29C2049/2414—Linings or labels, e.g. specific geometry, multi-layered or material
- B29C2049/24302—Label materials
- B29C2049/24306—Label materials using different material for the label and the preform
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
Abstract
Description
L'invention concerne un procédé pour la fabrication d'objets tels que des bidons pourvus d'étiquettes. The invention relates to a method for manufacturing objects such as cans with labels.
Les objets tels que les bidons ou flacons du même genre, réalisés en matière thermoplastique, peuvent être obtenus à faible prix par un procédé d'extrusion et de soufflage, suivant lequel on extrude un tube de matière thermoplastique et on introduit une portion de ce tube qui est encore à l'état de fusion pâteuse, dans un moule de soufflage. L'opération finale consiste alors à introduire de l'air sous pression à l'intérieur de la portion du tube logée dans le moule afin qu'elle se gonfle et qu'elle s'étire pour venir s'appliquer contre la paroi interne du moule. Objects such as cans or the like, made of thermoplastic material, can be obtained at low cost by an extrusion and blowing process, in which a tube of thermoplastic material is extruded and a portion of this tube is introduced. which is still in the pasty molten state, in a blow mold. The final operation then consists in introducing pressurized air inside the portion of the tube housed in the mold so that it swells and stretches to come to bear against the internal wall of the mold.
Ce procédé ne permet cependant pas Jusqu'à présent d'obtenir une fabrication de qualité lorsque l'on désire réaliser, par exemple, des bidons pourvus d'étiquettes. En effet, dans ce cas, on place l'étiquette contre la paroi interne du moule, de façon qu'elle se colle contre la paroi externe du bidon au cours de l'opération de soufflage du tube de matière thermoplastique à l'état pâteux. Or, on constate que bien souvent dans ce cas, l'étiquette est mal collée au bidon, notamment par suite de la présence de poches d'air sous l'étiquette. However, this process has not hitherto made it possible to obtain quality production when it is desired to produce, for example, cans provided with labels. Indeed, in this case, the label is placed against the internal wall of the mold, so that it sticks against the external wall of the container during the blowing operation of the tube of thermoplastic material in the pasty state. . However, it is found that very often in this case, the label is badly stuck to the container, in particular as a result of the presence of air pockets under the label.
Egalement, l'un des défauts de ce collage se traduit par des frisures de l'étiquette, ces frisures résultant aussi des rétreints différents des matières à températures différentes, qui constituent l'étiquette et le bidon.Also, one of the defects of this bonding results in crimps in the label, these crimps also resulting from different shrinking of the materials at different temperatures, which constitute the label and the container.
On constate donc dans la pratique un défaut de qualité du bidon étiqueté et, surtout, un défaut de constance de cette qualité, si bien que, jusqu'à présent, l'étiquetage des bidons en matière thermoplastique ne peut être obtenu directement lors du procédé d'extrusion et de soufflage.There is therefore in practice a defect in the quality of the labeled container and, above all, a lack of consistency in this quality, so that, until now, the labeling of containers made of thermoplastic material cannot be obtained directly during the process. extrusion and blowing.
La présente invention a notamment pour but de remédier à ces inconvénients et concerne à cet effet un procédé pour la fabrication d'objets tels que des bidons pourvus d'étiquettes, caractérisé en ce que l'on réalise l'objet et l'étiquette en matière thermoplastique, la température de fusion de la matière constituant l'étiquette étant plus faible que celle de la matière constituant l'objet, et en ce que l'on réalise l'objet par une opération d'extrusion-soufflage dans un moule, contre lequel on a préalablement placé l'étiquette. The object of the present invention is in particular to remedy these drawbacks and to this end relates to a process for the manufacture of objects such as cans provided with labels, characterized in that the object and the label are produced by thermoplastic material, the melting temperature of the material constituting the label being lower than that of the material constituting the object, and in that the object is produced by an extrusion-blowing operation in a mold, against which the label was previously placed.
Suivant une autre caractéristique de l'invention, on réalise des striures sur la face verso de l'étiquette, se thermoscellant avec la matière constituant l'objet. According to another characteristic of the invention, striations are made on the reverse side of the label, heat-sealing with the material constituting the object.
Suivant une autre caractéristique de l'invention, on réalise des striures sur la paroi interne du moule recevant l'étiquette. According to another characteristic of the invention, striations are made on the internal wall of the mold receiving the label.
L'invention est représentée à titre d'exemple non limitatif sur l'unique dessin ci-joint qui est une vue en coupe schématique d'un objet au cours de son procédé de fabrication par extrusion-soufflage. The invention is shown by way of nonlimiting example in the single attached drawing which is a schematic sectional view of an object during its manufacturing process by extrusion blow molding.
La présente invention a, en conséquence, pour but la fabrication simple, peu coûteuse et de bonne qualité, d'objets en matière thermoplastique pourvus d'étiquettes, ces étiquettes étant fixées à la paroi de l'objet au cours même de sa fabrication par extrusionsoufflage. La présente description se rapportera plus particulièrement à la fabrication de bidons pourvus d'étiquettes. The present invention therefore has the aim of manufacturing simple, inexpensive and good quality objects of thermoplastic material provided with labels, these labels being fixed to the wall of the object during its very manufacture by extrusion blowing. The present description will relate more particularly to the manufacture of cans provided with labels.
Au cours de ce procédé, on extrude par une extrudeuse non représentée, un tube de matière thermoplastique 1 qui est directement introduit, à hauteur d'un premier poste de fabrication, dans l'enceinte 2 d'un moule de soufflage réalisé à la forme du bidon désiré. Ce moule comprend deux demi-coquilles symétriques 21, 22 qui s'assemblent suivant un plan de joint médian
X-X et qui serrent entre elles les deux extrémités 11, 12 du tube de matière thermoplastique extrudé. Ces deux demi-coquilles 21, 22 sont conformées de façon que l'une des extrémités 12 du tube 1 définisse le goulot de remplissage du bidon qui constitue également l'orifice par lequel s'effectue l'opération de soufflage.Le moule est déplacé de la position d'extrusion dans laquelle les deux demi-coquilles 21, 22 se rapprochent pour serrer entre elles la portion de tube 1 qui vient d'être extrudée, vers la position de soufflage au cours de laquelle de l'air sous pression est introduit dans le tube 1 par l'orifice 13 du goulot, afin de gonfler et d'étirer le tube et plaquer sa paroi contre la face interne du moule 2.During this process, a tube of thermoplastic material 1 is extruded by an extruder not shown, which is directly introduced, at the height of a first manufacturing station, into the enclosure 2 of a blow mold produced in the form of the desired container. This mold comprises two symmetrical half-shells 21, 22 which assemble according to a median joint plane
XX and which clamp between them the two ends 11, 12 of the tube of extruded thermoplastic material. These two half-shells 21, 22 are shaped so that one of the ends 12 of the tube 1 defines the filler neck of the can which also constitutes the orifice through which the blowing operation takes place. The mold is moved from the extrusion position in which the two half-shells 21, 22 come together to clamp between them the portion of tube 1 which has just been extruded, towards the blowing position during which pressurized air is introduced into the tube 1 through the orifice 13 of the neck, in order to inflate and stretch the tube and press its wall against the internal face of the mold 2.
Préalablement à la fermeture des deux demicoquilles 21, 22, c'est-à-dire préalablement à l'extrusion de la portion du tube 1, on a placé dans l'une ou les deux demi-coquilles 21, 22, une étiquette 3, celle-ci étant en général maintenue contre la face interne du moule par une aspiration s'établissant au travers d'orifices d'évents 4. Prior to the closing of the two half-shells 21, 22, that is to say prior to the extrusion of the portion of the tube 1, a label 3 has been placed in one or both half-shells 21, 22 , the latter being generally held against the internal face of the mold by a suction being established through orifices of vents 4.
Suivant l'invention, il est cependant prévu, d'une part, que cette étiquette 3 est~réalisée également en matière thermoplastique et, de préférence, en matière thermoplastique de même nature que celle constituant le tube 1 et donc le bidon et, d'autre part, que la température de fusion pâteuse de la matière constituant l'étiquette, est plus faible que celle du bidon. According to the invention, it is however provided, on the one hand, that this label 3 is also made of thermoplastic material and, preferably, of thermoplastic material of the same nature as that constituting the tube 1 and therefore the container and, d On the other hand, that the pasty melting temperature of the material constituting the label is lower than that of the can.
L'expérience a montré que, d'une manière générale, on obtient de bons résultats lorsque la température de fusion pâteuse de l'étiquette est comprise entre 75 et 85 X de celle de la matière constituant le tube 1 et le bidon.Experience has shown that, in general, good results are obtained when the pasty melting temperature of the label is between 75 and 85 X that of the material constituting the tube 1 and the container.
Par exemple, le bidon et l'étiquette pourront être réalisés en polyéthylène dont la température de fusion pâteuse est de 2150 alors que celle de la matière constituant l'éti- quette est de 1700. For example, the container and the label could be made of polyethylene, the pasty melting temperature of which is 2150 while that of the material constituting the label is 1700.
Ce procédé qui met en oeuvre des matières thermoplastiques de même famille et d'une température de fusion pâteuse différente pour l'étiquette et pour le bidon, permet d'obtenir un résultat de bonne qualité, du fait que, au cours de l'opération de soufflage la matière thermoplastique du bidon s'applique contre la face verso de l'étiquette également en matière thermoplastique, ce qui produit un thermoscellement qui commence tout d'abord par la zone centrale de l'étiquette avec laquelle vient en contact en premier lieu le bidon, puis se poursuit vers la périphérie de l'étiquette au cours du soufflage pendant lequel la matière plastique du tube 1 s'étire et se refroidit pour atteindre les angles du moule 2. This process, which uses thermoplastics of the same family and a different pasty melting temperature for the label and for the container, makes it possible to obtain a good quality result, since during the operation the thermoplastic material of the container is applied against the back side of the label also made of thermoplastic material, which produces a heat-sealing which begins first with the central zone of the label with which it comes into contact in the first place the container, then continues towards the periphery of the label during blowing during which the plastic material of the tube 1 stretches and cools to reach the angles of the mold 2.
Ce procédé permet d'éviter la formation de poches d'air étant donné le thermoscellement immédiat de l'étiquette au bidon, du fait que la température de la matière plastique du tube en cours d'étirage produit la thermofusion superficielle de la face verso de l'étiquette, d'où la liaison intime de l'étiquette au bidon. En outre, au cours de ce procédé, on supprime les frisures de l'étiquette, qui pourraient apparaître après refroidissement, du fait que le thermoscellement de l'étiquette au bidon progresse, au cours de l'opération de soufflage, de la zone centrale de l'étiquette et vers sa périphérie, tandis que la température de la matière constituant le bidon se refroidit. This process makes it possible to avoid the formation of air pockets, given the immediate heat-sealing of the label in the container, because the temperature of the plastic material of the tube being drawn produces surface heat-fusion of the back side of the label, hence the intimate connection of the label to the container. In addition, during this process, the crimps of the label are removed, which could appear after cooling, because the heat sealing of the label in the container progresses, during the blowing operation, from the central zone. of the label and towards its periphery, while the temperature of the material constituting the container cools.
Suivant l'invention, il est également prévu d'améliorer la liaison étiquette-bidon en réalisant préalablement des striures sur la face verso de l'étiquette, qui vient en contact de la face externe du bidon. Ces striures très fines du genre de celles obtenues avec un papier abrasif, permettent alors, d'une part, de favoriser l'évacuation de l'air et d'améliorer la jonction de l'étiquette au bidon. According to the invention, it is also planned to improve the label-can connection by making striations beforehand on the back side of the label, which comes into contact with the external face of the can. These very fine striations of the kind obtained with an abrasive paper, then make it possible, on the one hand, to favor the evacuation of air and to improve the junction of the label in the canister.
Egalement, des striures identiques pourront être prévues sur la face interne du moule 2 recevant l'étiquette 3, de manière que l'air évacué par les striures prévues sur la face verso de l'étiquette, puisse s'échapper par les évents 4 disposés sous l'étiquette 3 en passant par les striures de la paroi du moule disposées sous l'étiquette. Also, identical ridges may be provided on the internal face of the mold 2 receiving the label 3, so that the air evacuated by the ridges provided on the reverse side of the label, can escape through the vents 4 disposed under the label 3 passing through the striations of the mold wall arranged under the label.
On notera que les objets obtenus sont d'un prix de revient réduit, d'une part du fait du procédé mis en oeuvre, d'autre part du fait qu'en mettant en oeuvre des matières plastiques de même nature, ce procédé permet le recyclage des déchets sans aucune perte. It will be noted that the objects obtained are of a reduced cost price, on the one hand due to the process used, and on the other hand to the fact that by using plastics of the same nature, this process allows the recycling of waste without any loss.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8616731A FR2607432B1 (en) | 1986-12-01 | 1986-12-01 | PROCESS FOR THE MANUFACTURE OF OBJECTS SUCH AS CANS PROVIDED WITH LABELS AS WELL AS THE OBJECTS OBTAINED BY THE IMPLEMENTATION OF THIS PROCESS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8616731A FR2607432B1 (en) | 1986-12-01 | 1986-12-01 | PROCESS FOR THE MANUFACTURE OF OBJECTS SUCH AS CANS PROVIDED WITH LABELS AS WELL AS THE OBJECTS OBTAINED BY THE IMPLEMENTATION OF THIS PROCESS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2607432A1 true FR2607432A1 (en) | 1988-06-03 |
| FR2607432B1 FR2607432B1 (en) | 1989-05-05 |
Family
ID=9341397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8616731A Expired FR2607432B1 (en) | 1986-12-01 | 1986-12-01 | PROCESS FOR THE MANUFACTURE OF OBJECTS SUCH AS CANS PROVIDED WITH LABELS AS WELL AS THE OBJECTS OBTAINED BY THE IMPLEMENTATION OF THIS PROCESS |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2607432B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0575631A1 (en) * | 1990-10-29 | 1993-12-29 | rota-Druck W. Kieser KG | In-mould label |
| EP0795390A1 (en) * | 1996-03-15 | 1997-09-17 | L'oreal | Container comprising a decorative label and method for producing this container |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3108850A (en) * | 1960-11-23 | 1963-10-29 | American Can Co | Labeling of blown plastic containers |
| US3207822A (en) * | 1962-08-06 | 1965-09-21 | American Can Co | Method of decorating plastic objects |
| FR1499370A (en) * | 1966-09-07 | 1967-10-27 | Processes for decorating plastic objects and products thus obtained | |
| DE1604577A1 (en) * | 1966-02-18 | 1970-02-12 | Metzeler Plastic Gmbh & Co Kg | Marking film made of plastic, in particular polyethylene, for the colored marking of blown articles made of thermoplastic material |
| CH492265A (en) * | 1968-09-05 | 1970-06-15 | Langecker Erhard | A colored and / or printed label or splash that can be applied to hollow bodies made from a tubular or band-shaped blank |
| GB1253223A (en) * | 1968-11-19 | 1971-11-10 |
-
1986
- 1986-12-01 FR FR8616731A patent/FR2607432B1/en not_active Expired
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3108850A (en) * | 1960-11-23 | 1963-10-29 | American Can Co | Labeling of blown plastic containers |
| US3207822A (en) * | 1962-08-06 | 1965-09-21 | American Can Co | Method of decorating plastic objects |
| DE1604577A1 (en) * | 1966-02-18 | 1970-02-12 | Metzeler Plastic Gmbh & Co Kg | Marking film made of plastic, in particular polyethylene, for the colored marking of blown articles made of thermoplastic material |
| FR1499370A (en) * | 1966-09-07 | 1967-10-27 | Processes for decorating plastic objects and products thus obtained | |
| CH492265A (en) * | 1968-09-05 | 1970-06-15 | Langecker Erhard | A colored and / or printed label or splash that can be applied to hollow bodies made from a tubular or band-shaped blank |
| GB1253223A (en) * | 1968-11-19 | 1971-11-10 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0575631A1 (en) * | 1990-10-29 | 1993-12-29 | rota-Druck W. Kieser KG | In-mould label |
| EP0795390A1 (en) * | 1996-03-15 | 1997-09-17 | L'oreal | Container comprising a decorative label and method for producing this container |
| US5916646A (en) * | 1996-03-15 | 1999-06-29 | L'oreal | Container having a decorative label and a method for obtaining this container |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2607432B1 (en) | 1989-05-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |