BE1000817A6 - Sheets manufacturing process with multicolored bands of thermoplastic materials. - Google Patents

Sheets manufacturing process with multicolored bands of thermoplastic materials. Download PDF

Info

Publication number
BE1000817A6
BE1000817A6 BE8701019A BE8701019A BE1000817A6 BE 1000817 A6 BE1000817 A6 BE 1000817A6 BE 8701019 A BE8701019 A BE 8701019A BE 8701019 A BE8701019 A BE 8701019A BE 1000817 A6 BE1000817 A6 BE 1000817A6
Authority
BE
Belgium
Prior art keywords
layer
plastic
strip
thickness
color
Prior art date
Application number
BE8701019A
Other languages
French (fr)
Original Assignee
Coexpan Sa
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 Coexpan Sa filed Critical Coexpan Sa
Application granted granted Critical
Publication of BE1000817A6 publication Critical patent/BE1000817A6/en

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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/19—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their edges
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/307—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the die
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/685—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks by laminating inserts between two plastic films or plates
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/002—Coloured

Abstract

Procédé de fabrication de feuilles thermoformées, constituées par une couche de matière de base, sur laquelle sont placées des bandes colorées d'allure longitudinale, ayant une épaisseur et une largeur identiques ou différentes, avec par-dessus une couche de matière plastique transparente et brillante, caractérisé en ce qu'il comprend d'abord la fusion et l'extrusion de la matière plastique à travers autant d'extrudeuses qu'il y a de types différents de matières utilisées, en ce qui concerne la couleur, la matière plastique fondue étant transportée vers la filière de conformation de la bande finale.Method of manufacturing thermoformed sheets, consisting of a base material layer, on which are placed colored strips of longitudinal shape, having the same or different thickness and width, with a transparent and shiny plastic layer on top , characterized in that it first comprises the melting and extrusion of the plastic material through as many extruders as there are different types of materials used, as regards the color, the molten plastic material being transported to the shaping die of the final strip.

Description

       

   <Desc/Clms Page number 1> 
 



  "Procédé de fabrication de feuilles comportant des bandes multicolores de matières thermoplastiques". 



   La présente invention est relative à un procédé de fabrication de feuilles comportant des bandes multicolores de matières thermoplastiques, ce procédé présentant une série d'avantages très importants par rapport aux techniques les plus modernes, actuellement utilisées et développées dans ce domaine industriel. 



   11 exste en pratique un procédé expliqué dans la demande de brevet français   nO 85 15621,   qui présente un procédé particulier d'obtention de feuilles décorées, ce procédé soulevant certains problèmes dans son application pratique du fait du fluage de certaines couches de matières plastiques les unes par rapport aux autres, ce qui provoque une migration des bandes les unes sur les autres lorsqu'on utilise des couleurs distinctes de bandes. 



   En conséquence, le but de la présente invention est la fabrication de feuilles thermoformées d'une sécurité et   d'une   qualité élevées de fabrication, malgré le fait qu'une variation des conditions d'extrusion ou de thermoformage ne sont en aucune manière critiques à l'encontre de ce qui se présente dans les autres procédés utilisés. 



   Le produit final obtenu consiste en une base formée par une couche de matière plastique, sur laquelle sont situées des bandes longitudinales d'une largeur distincte et sur lesquelles se place une couche   superieure   de matière plastique transparente et brillante. 



   Les phases opératoires du procédé faisant l'objet de l'invention sont les suivantes. 
 EMI1.1 
 



  En premier lieu, on procède fusion et à l'extru- sion de la matière thermoplastique dans autant d'extrudeuses qu'il y a de types et de couleurs distincts de matières plastiques utilisées, c'est-à-dire que, si on a une couche de base, six couches intermédiaires 

 <Desc/Clms Page number 2> 

 de couleurs et une couche supérieure de matière plastique transparente, il faudra huit machines extrudeuses, c'est-à-dire une machine pour chaque type de matière plastique utilisée. La matière plastique la plus couramment utilisée, du fait de ses hautes qualités et   caracté-   ristiques sera le polystyrène, qui, sous la forme de matière brute, présente les caractéristiques fondamentales nécessaires à sa configu- 
 EMI2.1 
 ration et à sa coloration. 



   Cette matière plastique se ramollit à partir de 90 ou   100 C,   température à laquelle cette matière commence à se déformer, jusqu'à une température supérieure, et ce jusqu'à un niveau constant dans le procédé d'environ   210oC,   ce niveau pouvant varier entre des limites de 190   ä   3000 dans la tête de formage de ces feuilles. 



   Toutes les matières plastiques fondues arrivent des extrudeuses, atteignent un premier plateau qui les distribue   ä   travers des canaux horizontaux distincts, chacun de ceux-ci emportant une des matières plastiques. Après ce plateau, on a un autre distributeur   gräce   auquel la situation requise, dans la bande conformée, de l'une et l'autre couleur est obtenue jusqu'à la hauteur voulue par un conduit qui centre la couleur désirée pour atteindre finalement un dépôt central des couleurs désirées, pouvant être enlevées   gräce   à des conduits correspondants.

   Pour la conformation en bandes, ces conduits porteurs des couleurs distinctes sont amenés à atteindre une pièce en forme de peigne dans laquelle la matière plastique 
 EMI2.2 
 circule à travers les parties triangulaires depuis le sommet jusqu'à la partie de sortie,   OÙ   la bande se réunit simultanément aux autres bandes latérales.

   En même temps, la matière de base et la matière 
 EMI2.3 
 plastique transparente supérieure sont distribuées respectivement par le canal inférieur et par le canal supérieur, la première matière étant envoyée à travers la zone inférieure de la tête et la seconde à travers la partie supérieure jusqu'au point unique de réunion avec les bandes colorées intermédiaires, toutes ces bandes étant réunies dans la même zone dans laquelle, en dépit des fluidités, des propriétés physiques ou des pressions distinctes, ces caractéristiques sont equilibres, sans qu'il y ait de déviations, de migrations d'une matière 

 <Desc/Clms Page number 3> 

 d'une bande à l'autre, ni d'une couche à une autre, à la suite de la réunion de toutes ces bandes au même point de la tête. 



   L'épaisseur des bandes est réglée grâce au débit de matière plastique atteignant la tête, un petit débit amenant la formation d'une bande mince, tandis qu'un débit supérieur provoquant la formation   d'une   bande plus épaisse. 



   La justification de cette variation d'épaisseur de la bande colorée intermédiaire est que, lorsqu'on conforme les écoulements venant de la plaque susdite, si on utilise une bande de faible épaisseur présentant une couleur intense, une impression de défaut de matière sera donnée en ce qui concerne le contenu de l'intérieur, et comme la couche de support est blanche, Ja bande deviendrait transparente du fait de cette faible épaisseur de cette bande colorée, de sorte que, pour les couleurs fortes, l'épaisseur de la bande colorée intermédiaire est habituellement un peu plus grande que dans le cas des couleurs faibles. 



   Les largeurs des bandes sont réglées grâce aux pièces en forme de peignes triangulaires dans lesquelles, suivant la largeur de ceux-ci ou la zone de sortie extrême, le calibrage des feuilles en bandes plus ou moins larges est réalisé. 



   La feuille thermoformée est réglée, en ce qui concerne son épaisseur totale, à sa sortie grâce à la déformation de la lèvre de sortie de la pièce formant matrice ou de la filière de conformation ; grâce à un étranglement de l'épaisseur à la sortie, la bande réalisée aura une largeur totale délimitée par la filière employée, cette grandeur étant fixe pour chaque filière, tandis que l'épaisseur totale de la feuille pourrait varier entre 0, 6 et   2, 4 mm,   les proportions d'épaisseur des éléments constitutifs étant les suivantes en pourcent : -   3, 5 à 6   % dans la couche supérieure, transparente et brillante ;   -'+0 à 60   % de l'épaisseur dans les bandes colorées ; et -   56, 5 à   34 % de l'épaisseur dans la matière de base. 



   La vitesse de formage des feuilles susdites est de préférence de 7 à 11 mètres par minute, une configuration des feuilles à une forme stable et correcte correspondant à de telles 

 <Desc/Clms Page number 4> 

 valeurs, cette vitesse de sortie étant obtenue gräce à l'adaptation des extrudeuses qui assureront l'impulsion de la matière plastique suivant leur configuration. 



   A la sortie de la tête ou de la filière de configuration, la feuille passe par des rouleaux de refroidissement, maintenus à une température constante par une réfrigération interne grâce à de l'eau ou une autre matière, la feuille étant ensuite recueillie par bobinage en rouleaux cylindriques. 



   Comme opération finale du procédé, on réalise le fendage longitudinal grâce à un decoupoir qui présente la par- 
 EMI4.1 
 ticularíté de déceler la séparation des couleurs grâce à l'utilisation de cellules photoélectriques qui contrôlent ce découpoir. 



   D'autre part, la largeur des bandes que les feuilles comportent peut varier entre 3 et 600 mm, ce qui donne Ja variation susdite par la configuration de la pièce dans la forme de peigne intermédiaire.



   <Desc / Clms Page number 1>
 



  "Process for the production of sheets comprising multicolored strips of thermoplastic materials".



   The present invention relates to a process for manufacturing sheets comprising multi-colored strips of thermoplastic materials, this process having a series of very important advantages compared with the most modern techniques, currently used and developed in this industrial field.



   In practice, there is a process explained in French patent application No. 85 15621, which presents a particular process for obtaining decorated sheets, this process raising certain problems in its practical application due to the creep of certain layers of plastic materials. relative to each other, which causes the bands to migrate on top of each other when different colors of bands are used.



   Accordingly, the object of the present invention is the manufacture of thermoformed sheets of high manufacturing quality and safety, despite the fact that a variation in the conditions of extrusion or thermoforming is in no way critical to against what occurs in the other processes used.



   The final product obtained consists of a base formed by a layer of plastic material, on which are located longitudinal strips of a distinct width and on which is placed an upper layer of transparent and shiny plastic material.



   The operating phases of the process which is the subject of the invention are as follows.
 EMI1.1
 



  First, the thermoplastic material is melted and extruded in as many extruders as there are distinct types and colors of plastics used, i.e. if has a base layer, six intermediate layers

 <Desc / Clms Page number 2>

 of colors and an upper layer of transparent plastic, eight extruder machines will be needed, i.e. one machine for each type of plastic used. The most commonly used plastic material, because of its high qualities and characteristics, will be polystyrene, which, in the form of raw material, has the fundamental characteristics necessary for its configuration.
 EMI2.1
 ration and its coloring.



   This plastic material softens from 90 or 100 C, temperature at which this material begins to deform, up to a higher temperature, and this up to a constant level in the process of about 210oC, this level can vary between limits of 190 to 3000 in the forming head of these sheets.



   All of the molten plastics arrive from the extruders, reach a first plateau which distributes them through separate horizontal channels, each of which carries one of the plastics. After this tray, there is another distributor thanks to which the required situation, in the shaped strip, of both colors is obtained up to the desired height by a conduit which centers the desired color to finally reach a deposit. central of the desired colors, which can be removed thanks to corresponding conduits.

   For the conformation in strips, these conduits carrying distinct colors are brought to reach a comb-shaped part in which the plastic material
 EMI2.2
 flows through the triangular parts from the top to the exit part, WHERE the strip meets simultaneously with the other side strips.

   At the same time, the basic material and the material
 EMI2.3
 transparent upper plastic are distributed respectively by the lower channel and by the upper channel, the first material being sent through the lower zone of the head and the second through the upper part to the single point of meeting with the intermediate colored bands, all these bands being united in the same zone in which, in spite of the fluidities, physical properties or distinct pressures, these characteristics are balanced, without there being deviations, of migrations of a material

 <Desc / Clms Page number 3>

 from one band to another, nor from one layer to another, following the union of all these bands at the same point of the head.



   The thickness of the strips is controlled by the flow of plastic material reaching the head, a small flow causing the formation of a thin strip, while a higher flow causing the formation of a thicker strip.



   The justification for this variation in thickness of the intermediate colored strip is that, when the flows coming from the abovementioned plate are conformed, if a thin strip having an intense color is used, an impression of material defect will be given in as regards the contents of the interior, and as the support layer is white, the strip would become transparent due to the small thickness of this colored strip, so that, for strong colors, the thickness of the colored strip intermediate is usually slightly larger than in the case of weak colors.



   The widths of the strips are adjusted by means of pieces in the form of triangular combs in which, depending on the width of these or the extreme exit zone, the sheets are calibrated into more or less wide strips.



   The thermoformed sheet is adjusted, as regards its total thickness, at its exit by virtue of the deformation of the exit lip of the part forming the matrix or of the shaping die; thanks to a constriction of the thickness at the outlet, the strip produced will have a total width delimited by the die used, this quantity being fixed for each die, while the total thickness of the sheet could vary between 0, 6 and 2 , 4 mm, the proportions of thickness of the constituent elements being the following in percent: - 3, 5 to 6% in the upper layer, transparent and shiny; - '+ 0 to 60% of the thickness in the colored bands; and - 56.5 to 34% of the thickness in the base material.



   The forming speed of the above sheets is preferably 7 to 11 meters per minute, a configuration of the sheets having a stable and correct shape corresponding to such

 <Desc / Clms Page number 4>

 values, this exit speed being obtained thanks to the adaptation of the extruders which will ensure the impulse of the plastic material according to their configuration.



   At the outlet of the head or of the configuration die, the sheet passes through cooling rollers, maintained at a constant temperature by internal refrigeration using water or another material, the sheet then being collected by winding. cylindrical rollers.



   As a final operation of the process, the longitudinal splitting is carried out using a cutter which presents the par-
 EMI4.1
 particularity to detect the separation of colors thanks to the use of photoelectric cells which control this cutter.



   On the other hand, the width of the strips that the sheets comprise can vary between 3 and 600 mm, which gives the above-mentioned variation by the configuration of the part in the form of an intermediate comb.

Claims (10)

REVENDICATIONS 1. Procédé de fabrication de feuilles thermoformées, constituées par une couche de matière de base, sur laquelle sont placées des bandes colorées d'allure longitudinale, ayant une épaisseur et une largeur identiques ou différentes, avec par-dessus une couche de matière plastique transparente et brillante, caractérisé en ce qu'il comprend d'abord la fusion et l'extrusion de la matière plastique à travers autant d'extrudeuses qu'il y a de types différents de matières utilisées, en ce qui concerne la couleur, la matière plastique fondue étant transportée vers la filière de conformation de la bande finale.  CLAIMS 1. Method for manufacturing thermoformed sheets, consisting of a base material layer, on which are placed colored strips of longitudinal shape, having the same or different thickness and width, with a transparent plastic layer on top and brilliant, characterized in that it first comprises the melting and extrusion of the plastic material through as many extruders as there are different types of materials used, as regards the color, the material melted plastic being transported to the shaping die of the final strip. 2. Procédé suivant la revendication 1, caractérisé en ce que la filière de conformation assure, à la position d'entrée de la matière plastique fondue, la disposition de chaque bande en canaux horizontaux, depuis chacun desquels est extraite la matière plastique de la couleur souhaitée à la hauteur voulue pour la conformation de la bande terminée présentant la couleur désirée.  2. Method according to claim 1, characterized in that the shaping die ensures, at the entry position of the molten plastic, the arrangement of each strip in horizontal channels, from each of which is extracted the colored plastic desired at the desired height for the conformation of the finished strip having the desired color. 3. Procédé suivant l'une ou l'autre des revendications l et 2, caractérisé en ce que la configuration de la couche longitudinale est obtenue en amenant les couleurs différentes à des parties intermédiaires de la filière de conformation, en forme de peigne, avec finalement jonction des bandes latérales les unes aux autres.  3. Method according to either of claims 1 and 2, characterized in that the configuration of the longitudinal layer is obtained by bringing the different colors to intermediate parts of the shaping die, in the form of a comb, with finally joining the side bands to each other. 4. Procédé suivant l'une quelconque des revendications 1 à 3, caractérisé en ce qu'en même temps les couches centrales de couleur sont réunies à la couche de base intérieure et à la couche superieure transparente pour sortir sous forme d'un corps unitaire, le réglage de l'épaisseur totale étant assuré par la déformation de la lèvre de sortie de la pièce formant matrice.  4. Method according to any one of claims 1 to 3, characterized in that at the same time the central layers of color are joined to the inner base layer and to the transparent upper layer to exit in the form of a unitary body , the adjustment of the total thickness being ensured by the deformation of the exit lip of the matrix-forming part. 5. Procédé suivant l'une quelconque des revendications 1 à 4, caractérisé en ce que l'épaisseur des couches centrales longitudinales de couleur est réglée par étranglement du débit d'alimentation de matière plastique au canal de formage de chaque couche différente.  5. Method according to any one of claims 1 to 4, characterized in that the thickness of the longitudinal central color layers is adjusted by throttling the plastic material feed rate to the forming channel of each different layer. 6. Procédé suivant l'une quelconque des revendications 1 à 5, caractérisé en ce que la feuille conformée passe, <Desc/Clms Page number 6> à la sortie, par des cylindres de refroidissement à température constante entretenue par une circulation d'eau.  6. Method according to any one of claims 1 to 5, characterized in that the shaped sheet passes,  <Desc / Clms Page number 6>  at the outlet, by constant temperature cooling cylinders maintained by a circulation of water. 7. Procédé suivant l'une quelconque des revendications 1 à 6, caractérisé en ce que l'épaisseur totale de feuille obtenue varie entre 0, 6 et 2, 4 mm.  7. Method according to any one of claims 1 to 6, characterized in that the total thickness of sheet obtained varies between 0.6 and 2.4 mm. 8. Procédé suivant t'une quelconque des revendications 1 à 7, caractérisé en ce que l'épaisseur de feuille obtenue comprend les épaisseurs variables suivantes, en pourcent : - 3,5 à 6 % dans la couche brillante supérieure - 40 à 60 % dans les couches centrales de couleur, et - 56, 5 à 34 % dans la couche inférieure.  8. Method according to any one of claims 1 to 7, characterized in that the sheet thickness obtained comprises the following variable thicknesses, in percent: - 3.5 to 6% in the upper gloss layer - 40 to 60% in the central colored layers, and - 56, 5 to 34% in the lower layer. 9. Procédé suivant l'une quelconque des revendications 1 à 8, caractérisé en ce que la largeur de bande varie entre 3 et 600 mm. EMI6.1  9. Method according to any one of claims 1 to 8, characterized in that the strip width varies between 3 and 600 mm.  EMI6.1   10. des revendcations 1 à 9, caractérisé en ce que la température opératoire du Procédé suivant l'une quelconqueprocédé est comprise, dans la fi1ière de conformation, entre une limite inférieure de 1900 et une limite supérieure de 300 C. 10. of claims 1 to 9, characterized in that the operating temperature of the Process according to any process is included, in the shaping flier, between a lower limit of 1900 and an upper limit of 300 C.
BE8701019A 1987-04-29 1987-09-10 Sheets manufacturing process with multicolored bands of thermoplastic materials. BE1000817A6 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES8701269A ES2007340A6 (en) 1987-04-29 1987-04-29 Fabrication process for thermoplastic sheets/panels

Publications (1)

Publication Number Publication Date
BE1000817A6 true BE1000817A6 (en) 1989-04-11

Family

ID=8250696

Family Applications (1)

Application Number Title Priority Date Filing Date
BE8701019A BE1000817A6 (en) 1987-04-29 1987-09-10 Sheets manufacturing process with multicolored bands of thermoplastic materials.

Country Status (8)

Country Link
BE (1) BE1000817A6 (en)
BR (1) BR8704712A (en)
DE (1) DE3730452A1 (en)
ES (1) ES2007340A6 (en)
FR (1) FR2614575B1 (en)
IT (1) IT1223300B (en)
LU (1) LU86993A1 (en)
NL (1) NL8702162A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2649357A1 (en) * 1989-07-07 1991-01-11 Girodet Jean Michel Method of decorating plastic sheets and the sheets obtained according to the method
PT101963B (en) * 1997-01-31 2003-11-28 Coexpan Sa PROCESS AND DEVICE FOR THE MANUFACTURE OF EXTRUDED PLASTIC LEAVES
EP2173546A4 (en) * 2007-09-14 2011-11-16 Oakmoore Pty Ltd Co-extrusion and method of making a co-extrusion

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1729323A1 (en) * 1967-12-12 1971-07-29 Roehm Gmbh Multilayer extruded molded bodies and apparatus for their manufacture
BE727749A (en) * 1968-02-03 1969-07-31
AT325800B (en) * 1970-04-02 1975-11-10 Proksch Walter EXTRUSION PLANT FOR THE PRODUCTION OF MULTICOLORED PLASTIC TUBES
DE2122604A1 (en) * 1970-05-13 1971-11-25 Sordelli & C Spa Machine and method for the production of a thermoplastic film provided with patches arranged in strips
US3968196A (en) * 1971-03-29 1976-07-06 Cosden Oil & Chemical Company Method of co-extrusion of polyvinylidene fluoride/polystyrene multiple-layered sheeting
DE2211394A1 (en) * 1972-03-09 1973-09-20 Flamuco Gmbh Vereinigte Farben Two component moulding substances - with the components fed as individual layers to the extrusion nozzle
GB1445981A (en) * 1972-08-11 1976-08-11 Beghin Say Sa Net and method of producing same
DE2304105A1 (en) * 1973-01-27 1974-08-01 Bellaplast Gmbh Thermoplastic combination matl. for multi-component articles - with adjacent strips of differing materials for shaping into the various components
IT1031536B (en) * 1975-02-07 1979-05-10 Mazzoni G Cost Mecc MACHINE FOR GIVING A MARBLED AND STRIPED APPEARANCE WITH CONTINUOUS DRAWN GUMMY PASTES AND PRODUCT OBTAINED
FR2343582A1 (en) * 1976-03-12 1977-10-07 Rocchi Raymond Dies for coextrusion of continuous and interrupted laminating resins - to obtain patterned laminates in a single pass
DE3016445A1 (en) * 1980-04-29 1981-11-05 Bayer Ag, 5090 Leverkusen DEVICE FOR APPLYING A REACTION MIXTURE MAKING PARTICULAR FOAM FROM AT LEAST TWO FLOWABLE COMPONENTS TO A HIKING MAT
DE8113747U1 (en) * 1981-05-09 1982-01-21 Röhm GmbH, 6100 Darmstadt "COEXTRUDED LIGHT-TRANSFERABLE PLASTIC PROFILE"
US4435141A (en) * 1982-04-07 1984-03-06 Polyloom Corporation Of America Multicomponent continuous film die
FR2552707B1 (en) * 1983-10-03 1986-01-31 Siamp Cedap Reunies MULTI-LAYER DIE FOR THE PRODUCTION OF MULTICOLORED PLASTIC MATERIAL FILMS, SHEETS OR PLATES
FR2588797B1 (en) * 1985-10-18 1988-07-22 Siamp Cedap Reunies PROCESS FOR THE MANUFACTURE OF A MULTICOLORED PLASTIC SHEET

Also Published As

Publication number Publication date
DE3730452A1 (en) 1988-11-10
IT8721871A0 (en) 1987-09-10
FR2614575A1 (en) 1988-11-04
BR8704712A (en) 1988-11-16
ES2007340A6 (en) 1989-06-16
NL8702162A (en) 1988-11-16
LU86993A1 (en) 1988-02-02
FR2614575B1 (en) 1992-07-31
IT1223300B (en) 1990-09-19

Similar Documents

Publication Publication Date Title
FR2588797A1 (en) PROCESS FOR THE MANUFACTURE OF A MULTICOLORED PLASTIC SHEET
FR2653377A1 (en) METHOD AND DEVICE FOR FORMING AN ELONGATED STRIP OF DECORATION IN PLASTIC MATERIAL AND STRIP OF DECORATION FOR AUTOMOBILE, THUS OBTAINED BY EXTRUSION.
FR2561983A1 (en) TULLE OF PLASTIC MATERIAL AND METHOD OF MANUFACTURING THE SAME
CN1681650B (en) High clarity, high stiffness films
CA2671948C (en) Crosslaminate of oriented films, method of manufacturing same, and coextrusion die suitable in the process
NO168094B (en) FORMULATING DEVICE FOR MANUFACTURING AND FILLING A POSEMED RELEASABLE CLOSE DEVICE
FR2461652A1 (en) THERMOPLASTIC RESIN THIN-WALL CONTAINER AND PROCESS FOR PRODUCING THE SAME
FR2551694A1 (en)
EP0003449B1 (en) Process for producing by co-extrusion on composite material of polyvinylidene fluoride and polyurethane
US9694529B2 (en) Extrusion die for synthetic wood, manufacturing apparatus and method using the same, and synthetic wood manufactured by the same
BE1000817A6 (en) Sheets manufacturing process with multicolored bands of thermoplastic materials.
EP1093902B1 (en) Method of manufacturing a bendable core, core as obtained by the method, and profile comprising such a core
FR2735415A1 (en) METHOD FOR MANUFACTURING A PLATE-SHAPED ARTICLE AND ARTICLE MANUFACTURED
FR2661364A1 (en) PROCESS FOR MANUFACTURING A SHEET OF A COMPOSITE MATERIAL COMPRISING A CAST METHYL POLYMETHACRYLATE PLATE COMPRISING A THERMOPLASTIC SUPPORT LAYER AND PRODUCTS OBTAINED
EP0319435A1 (en) Process for altering the sliding characteristics of a ski sole made of powdered high-density highly specific gravity polyethylene
BE653675A (en)
BE1010902A5 (en) Method and device for producing extruded plastic sheets.
KR200345672Y1 (en) Multilayer thermoplastic sheet
FR2728501A1 (en) METHOD FOR MANUFACTURING SHEETS OF EXPANDED THERMOFORMABLE MATERIAL, DEVICE USING THE METHOD AND TRAYS THUS OBTAINED
BE676113A (en)
CH416070A (en) Process for manufacturing sheets or plates of gelled plastic material and device for carrying out the process
BE696820A (en)
EP0259391A1 (en) Method for fabricating cardboard or composite corrugated paper
BE823539A (en) PROCESS FOR THE EXTRUSION OF FOAM MATERIALS WITH NON-UNIFORM DISTRIBUTION OF MASS
BE886135A (en) CO-EXTRUDED SHEET WITH PROPERTIES LIKE A CROSS-LAMINATE, AND METHOD FOR THE PRODUCTION THEREOF

Legal Events

Date Code Title Description
RE20 Patent expired

Owner name: S.A. COEXPAN

Effective date: 19930910