FR2582984A1 - Method for metallising plastic articles and articles obtained according to this method - Google Patents

Method for metallising plastic articles and articles obtained according to this method Download PDF

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Publication number
FR2582984A1
FR2582984A1 FR8508539A FR8508539A FR2582984A1 FR 2582984 A1 FR2582984 A1 FR 2582984A1 FR 8508539 A FR8508539 A FR 8508539A FR 8508539 A FR8508539 A FR 8508539A FR 2582984 A1 FR2582984 A1 FR 2582984A1
Authority
FR
France
Prior art keywords
sheet
film
articles
metallising
complex
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
Application number
FR8508539A
Other languages
French (fr)
Other versions
FR2582984B3 (en
Inventor
Henri-Pierre Marcel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Monoplast SA France
Original Assignee
Monoplast SA France
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 Monoplast SA France filed Critical Monoplast SA France
Priority to FR8508539A priority Critical patent/FR2582984B3/en
Priority claimed from EP86401405A external-priority patent/EP0250687A1/en
Publication of FR2582984A1 publication Critical patent/FR2582984A1/en
Application granted granted Critical
Publication of FR2582984B3 publication Critical patent/FR2582984B3/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
    • B29C45/14811—Multilayered articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/10—Applying flat materials, e.g. leaflets, pieces of fabrics
    • B44C1/14—Metallic leaves or foils, e.g. gold leaf
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • B29L2009/005—Layered products coated
    • B29L2009/008—Layered products coated metalized, galvanized
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B32B2255/205—Metallic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2325/00—Polymers of vinyl-aromatic compounds, e.g. polystyrene

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

Method for metallising plastic articles shaped by injection or thermoforming. According to the invention, a flexible film 5 carrying a thin layer 7 metallised by vacuum evaporation is applied to a coloured base 1. Applications: obtaining a good appearance of uniform metallisation, especially on packages and containers.

Description

PROCEDE DE METALLISATION D'OBJETS EN MATIERE PLASTIQUE ET
OBJETS OBTENUS SELON CE PROCEDE.METHOD FOR METALLIZING OBJECTS IN PLASTIC MATERIAL AND
OBJECTS OBTAINED ACCORDING TO THIS PROCESS.

La présente invention a pour objet un procédé de métallisation d'objets en matière plastique permettant de modifier la présentation extérieure desdits objets et destiné en particulier, mais non exclusivement, aux emballages et récipients, ainsi que les objets obtenus selon ledit procédé.The subject of the present invention is a process for metallizing plastic objects making it possible to modify the external presentation of said objects and intended in particular, but not exclusively, for packaging and containers, as well as the objects obtained according to said method.

On connaît déjà des procédés de métallisation dont le premier consiste à colorer la feuille destinée à constituer l'objet dans la masse et à introduire dans celle-ci un pigment métallique composé de petits copeaux de métal, généralement d'aluminium, et un colorant, la matière étant ainsi colorée en fonction du résultat à obtenir et par exemple en gris pour obtenir un effet argent, et en jaune pour obtenir un effet or. Il s'agit de la technique mise en oeuvre dans les peintures métallisées. Malheureusement, lors du thermoformage destiné à mettre en forme l'objet, on n'obtient qu'un résultat médiocre et l'aspect métalllisé n'est pas évident.Metallization processes are already known, the first of which consists in coloring the sheet intended to constitute the object in the mass and in introducing therein a metallic pigment composed of small metal shavings, generally of aluminum, and a dye, the material thus being colored according to the result to be obtained and for example in gray to obtain a silver effect, and in yellow to obtain a gold effect. This is the technique used in metallic paints. Unfortunately, during thermoforming intended to shape the object, one obtains only a mediocre result and the metalllized appearance is not obvious.

Pour les objets obtenus par injection, le résultat est moins mauvais dans la mesure où l'aspect est lié à l'épaisseur des parois de l'objet qui est habituellement supérieure en injection qu'en thermoformage.For objects obtained by injection, the result is less bad insofar as the appearance is related to the thickness of the walls of the object which is usually greater in injection than in thermoforming.

On connait également des emballages constitués par un film métallisé sous vide avec la nuance de couleur désirée ainsi que des objets obtenus par thermoformage de tels films.Also known are packages made of a metallized film under vacuum with the desired shade of color as well as objects obtained by thermoforming such films.

Malheureusement, lorsqu'on étire la feuille au cours du thermoformage, on obtient des variations d'intensité du coloris qui donnent un résultat médiocre.Unfortunately, when the sheet is stretched during thermoforming, color intensity variations are obtained which give a poor result.

En ce qui concerne les objets obtenus par injection, il est possible de métalliser directement par évaporation sous vide l'objet à décorer mais ce procédé est d'un coût élevé et on reste limité par le nombre de coloris disponibles des métaux à évaporer. De plus, la couche métallique n'est pas protégée. With regard to the objects obtained by injection, it is possible to directly metallize by evaporation under vacuum the object to be decorated, but this process is of high cost and one remains limited by the number of available colors of the metals to be evaporated. In addition, the metal layer is not protected.

La présente invention a pour objet de pallier ces inconvénients et de proposer un procédé de fabrication pouvant être mis facilement en oeuvre sur les matériels existants
Selon la présente invention, le procédé de métallisation est caractérisé en ce qu'il consiste à former un complexe associant un support prélablement coloré, un film mince métallisé , la couche métallique etant disposée entre le support et le film.The object of the present invention is to overcome these drawbacks and to propose a manufacturing process which can be easily implemented on existing equipment.
According to the present invention, the metallization process is characterized in that it consists in forming a complex associating a previously colored support, a metallized thin film, the metal layer being disposed between the support and the film.

Dans le#cas où le complexe multicouche est thermoformé, le support étant constitué par une feuille extrudée, l'adhérence du film sur la feuille provient notamment du calandrage qui est réalisé à la sortie de l'extrudeuse produisant la feuille, le film métallisé pouvant être appliqué contre l'une des faces extérieures de la feuille, la couche métallique étant disposée contre la surface extérieure de la feuille lors du calandrage. La mise en oeuvre peut ainsi être obtenue sur du matériel existant sans causer de difficultés. Le complexe peut être également être formé à tout moment et non seulement à la sortie de l'extrudeuse.In the # case where the multilayer complex is thermoformed, the support being constituted by an extruded sheet, the adhesion of the film to the sheet comes in particular from calendering which is carried out at the outlet of the extruder producing the sheet, the metallized film being able to be applied against one of the outer faces of the sheet, the metal layer being placed against the outer surface of the sheet during calendering. The implementation can thus be obtained on existing equipment without causing difficulties. The complex can also be formed at any time and not only at the exit of the extruder.

Il est possible de métalliser industriellement un film à un coût relativement abordable et la couche métallique est ainsi prise en sandwich entre la feuille et le film extérieur ce qui la protège des rayures. Lorsqu'on étire le complexe (feuille + film), le dépôt métallique se déforme d'une manière continue conservant un bon aspect de surface, la coloration de la feuille de fond contribuant à l'effet final.It is possible to industrially metallize a film at a relatively affordable cost and the metal layer is thus sandwiched between the sheet and the outer film which protects it from scratches. When the complex is stretched (sheet + film), the metallic deposit is deformed in a continuous manner retaining a good surface appearance, the coloring of the base sheet contributing to the final effect.

Dans le cas de l'injection, le film métallisé est introduit directement dans le moule et c'est la pression appliquée par la matière injectée qui le conforme de manière à ce que le résultat obtenu soit analogue à celui obtenu par thermoformage. In the case of injection, the metallized film is introduced directly into the mold and it is the pressure applied by the injected material which conforms it so that the result obtained is analogous to that obtained by thermoforming.

D'autres caractéristiques et avantages de l'invention apparaîtront 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 Fig.1, un schéma du calandrage permettant de lier la feuille et le film - la Fig.2, une coupe verticale du complexe obtenu selon la présente 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 calendering diagram for linking the sheet and the film - Fig.2, a vertical section of the complex obtained according to the present invention.

Sur la Fig.1, la feuille ou couche de fond 1 sort encore chaude de l'extrudeuse 2. A partir d'une bobine 3 chargée de film métallisé 5, on déroule ce film de manière à ce qu'il pénètre simultanément à la feuille 1 entre les rouleaux de calandrage 4 qui, par thermocompression forment le complexe 6.In Fig.1, the sheet or base layer 1 still comes out hot from the extruder 2. From a reel 3 loaded with metallized film 5, this film is unwound so that it simultaneously penetrates the sheet 1 between the calendering rollers 4 which, by thermocompression form the complex 6.

Le complexe 6 se compose donc, comme représenté sur la Fig.2 d'une feuille de base 1 colorée en jaune, en gris, ou en toute autre couleur en fonction du résultat désiré.The complex 6 therefore consists, as shown in Fig.2 of a base sheet 1 colored in yellow, gray, or any other color depending on the desired result.

Cependant, selon l'invention, la feuille 1 est toujours colorée. Au-dessus de la couche 1 se trouve une couche métallique 7, elle-même recouverte par un film 5.However, according to the invention, the sheet 1 is always colored. Above layer 1 is a metallic layer 7, itself covered by a film 5.

Pour fixer les idées uniquement, la feuille 1 peut être constituée par du polystyrène dont l'épaisseur est de 0,85 cm., l'épaisseur de la couche métallique étant de 10 à 15 microns et celle du film de 45 microns. Bien entendu, tout autre matériau plastique adapté peut être employé.To fix the ideas only, the sheet 1 can be constituted by polystyrene whose thickness is 0.85 cm., The thickness of the metallic layer being from 10 to 15 microns and that of the film from 45 microns. Of course, any other suitable plastic material can be used.

Le complexe ainsi obtenu peut être thermoformé. Lorsque l'on étire la feuille au cours de l'opération, on obtient un objet où les variations d'épaisseur de la couche métallique sont compensées par une transparence accrue de cette couche, de sorte que, la couleur de fond devient plus apparente. Il en résulte une impression d'ensemble excellente par rapport aux résultats obtenus par la technique connue. The complex thus obtained can be thermoformed. When the sheet is stretched during the operation, an object is obtained in which the variations in thickness of the metal layer are compensated for by an increased transparency of this layer, so that the background color becomes more apparent. This results in an excellent overall impression compared to the results obtained by the known technique.

Le procédé selon la présente invention peut également être mis en oeuvre lorsque la matière plastique est injectée. Bien entendu, la matière colorée n'est injectée qu'après que le film métallisé 5,7 ait été introduit dans le moule.The method according to the present invention can also be implemented when the plastic material is injected. Of course, the colored material is only injected after the metallized film 5,7 has been introduced into the mold.

L'adaptation d'un dispositif d'amenée de la feuille est relativement simple. The adaptation of a device for feeding the sheet is relatively simple.

Dans les deux cas de mise en oeuvre du procédé, on obtient un aspect métallisé très satisfaisant à des coûts relativement bas étant donné que le coût de la métallisation est compensé, et au-delà, par le fait qu'il est possible de n'utiliser qu'un simple colorant pour teinter la feuille dans sa masse.In both cases of implementation of the method, a very satisfactory metallized appearance is obtained at relatively low costs since the cost of metallization is offset, and beyond, by the fact that it is possible to n ' use only a simple dye to tint the sheet in its mass.

La présente invention vise également les produits obtenus selon le procédé ci-dessus.The present invention also relates to the products obtained according to the above process.

Il va de soi que de nombreuses variantes peuvent être introduites, notamment par substitution de moyens techniquement équivalents sans sortir pour cela du cadre de l'invention. It goes without saying that numerous variants can be introduced, in particular by substitution of technically equivalent means without departing from the scope of the invention.

Claims (3)

REVENDICATIONS 10 Procédé de métallisation caractérisé en ce qu'il consiste10 Metallization process characterized in that it consists à former un complexe associant une couche mince (7) to form a complex associating a thin layer (7) métallique portée par un film (5) et un support coloré metallic carried by a film (5) and a colored support (i).  (i). 20 Procédé de métallisation selon la revendication 1,20 metallization process according to claim 1, caractérisé en ce que l'on forme le complexe sous forme de characterized in that the complex is formed in the form of couche planes qui sont ensuite thermoformées 30 Procédé de métallisation selon la revendication 1, flat layers which are then thermoformed 30 Metallization process according to claim 1, caractérisé en ce que le film métallisé (5,7) est characterized in that the metallized film (5,7) is introduit dans un moule d'injection , la face métallisée introduced into an injection mold, the metallized side étant tournée vers l'intérieur du moule, après quoi la being turned towards the inside of the mold, after which the matière plastique colorée (1) est injectée. colored plastic (1) is injected. 40 Objets en matière thermoplastique obtenus par le procédé40 Objects in thermoplastic material obtained by the process selon l'une des revendications précédentes.  according to one of the preceding claims.
FR8508539A 1985-06-06 1985-06-06 PROCESS FOR METALLIZING OBJECTS IN PLASTIC MATERIAL AND OBJECTS OBTAINED ACCORDING TO THIS PROCESS Expired FR2582984B3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8508539A FR2582984B3 (en) 1985-06-06 1985-06-06 PROCESS FOR METALLIZING OBJECTS IN PLASTIC MATERIAL AND OBJECTS OBTAINED ACCORDING TO THIS PROCESS

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8508539A FR2582984B3 (en) 1985-06-06 1985-06-06 PROCESS FOR METALLIZING OBJECTS IN PLASTIC MATERIAL AND OBJECTS OBTAINED ACCORDING TO THIS PROCESS
EP86401405A EP0250687A1 (en) 1986-06-26 1986-06-26 Process for metallizing plastic material articles, and articles obtained by the process

Publications (2)

Publication Number Publication Date
FR2582984A1 true FR2582984A1 (en) 1986-12-12
FR2582984B3 FR2582984B3 (en) 1987-10-09

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FR8508539A Expired FR2582984B3 (en) 1985-06-06 1985-06-06 PROCESS FOR METALLIZING OBJECTS IN PLASTIC MATERIAL AND OBJECTS OBTAINED ACCORDING TO THIS PROCESS

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2014440A1 (en) * 2007-07-13 2009-01-14 Hueck Folien Ges.m.b.H. Directly coated insert moulding - decorative films and laminates

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2014440A1 (en) * 2007-07-13 2009-01-14 Hueck Folien Ges.m.b.H. Directly coated insert moulding - decorative films and laminates
WO2009010206A1 (en) * 2007-07-13 2009-01-22 Hueck Folien Gmbh Direct-coated insert molding decorative foils and laminates

Also Published As

Publication number Publication date
FR2582984B3 (en) 1987-10-09

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