FR2593112A1 - EXTRUDER LINE FOR THE MANUFACTURE OF A MULTILAYER BREATHABLE SHEET - Google Patents
EXTRUDER LINE FOR THE MANUFACTURE OF A MULTILAYER BREATHABLE SHEET Download PDFInfo
- Publication number
- FR2593112A1 FR2593112A1 FR8700465A FR8700465A FR2593112A1 FR 2593112 A1 FR2593112 A1 FR 2593112A1 FR 8700465 A FR8700465 A FR 8700465A FR 8700465 A FR8700465 A FR 8700465A FR 2593112 A1 FR2593112 A1 FR 2593112A1
- Authority
- FR
- France
- Prior art keywords
- die
- transfer channel
- annular
- slot
- core
- 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
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
- 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
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
-
- 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
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- 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
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
-
- 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
- B29C48/14—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration
- B29C48/147—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration after the die nozzle
- B29C48/1472—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration after the die nozzle at the die nozzle exit zone
-
- 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
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
-
- 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
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
- B29C48/336—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die
- B29C48/3366—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die using a die with concentric parts, e.g. rings, cylinders
-
- 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
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/007—Using fluid under pressure
-
- 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
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Filière d'extrudeuse pour la fabrication, par coextrusion, d'une feuille soufflée multicouche à partir de plusieurs matières thermoplastiques stratifiées comprenant une partie inférieure de filière 1 équipée d'un dispositif pour l'amenée de plusieurs flux de matière plastique par l'intermédiaire de plusieurs conduits d'amenée 2, une partie supérieure de filière 3 avec fente annulaire de sortie 4 pour la sortie d'un flux de matière plastique multicouche sous forme de gaine, un noyau de filière 5 et un dispositif de stratification 6. Des canaux de transfert 7, 8 en forme de fente annulaire sont disposés dans les parties supérieure 3 et inférieure 1 de la filière. Les conduits d'amenée 2 débouchent dans le canal de transfert 7 unique, en forme de fente annulaire, qui est disposé dans la partie inférieure de la filière et qui entoure le noyau de filière, ledit canal de transfert étant conformé en dispositif de stratification 6. La fente annulaire de sortie 4 est raccordée au dispositif de stratification 6 par l'intermédiaire d'un canal de transfert 8 unique, sans barrettes de noyau, dans la partie supérieure de la filière. (CF DESSIN DANS BOPI)Extruder die for the manufacture, by coextrusion, of a multilayer blown sheet from several laminated thermoplastic materials comprising a lower die part 1 equipped with a device for supplying several flows of plastic material via several supply ducts 2, an upper die part 3 with annular outlet slit 4 for the exit of a flow of multilayer plastic material in the form of a sheath, a die core 5 and a laminating device 6. Channels transfer 7, 8 in the form of an annular slot are arranged in the upper 3 and lower 1 parts of the die. The supply ducts 2 open into the single transfer channel 7, in the form of an annular slot, which is arranged in the lower part of the die and which surrounds the die core, said transfer channel being shaped as a laminating device 6 The annular exit slot 4 is connected to the laminator 6 via a single transfer channel 8, without core strips, in the upper part of the die. (CF DRAWING IN BOPI)
Description
L'invention concerne une filière d'extrudeuse pour la fabrication, par co-The invention relates to an extruder die for the manufacture, by means of
extrusion, d'une feuille soufflée multicouche à partir de plusieurs matières thermoplastiques stratifiées, comprenant une partie inférieure de filière équipée d'un dispositif pour l'amenée de plusieurs flux de matière plastique par l'intermédiaire de plusieurs conduits extruding, from a multi-layer puffed sheet from a plurality of laminated thermoplastics, comprising a die bottom portion provided with a device for feeding a plurality of plastic streams through a plurality of conduits
d'amenée, une partie supérieure de filière avec fente annu- a die upper part with annular slot
laire de sortie pour la sortie d'un flux de matière plas- outlet for the output of a flow of plastic material.
tique multicouche sous forme de gaine, un noyau de filière et un dispositif de stratification, des canaux de transfert en forme de fente annulaire étant disposés dans les parties multilayer tick in the form of a sheath, a die core and a laminating device, annular slot-shaped transfer channels being arranged in the parts
inférieure et supérieure de la filière. On entend par dispo- lower and upper die. We understand by
sitif de stratification la somme des mesures mécaniques qui assurent une stratification sans mélange. Cela comprend une prise en considération des flux massiques qui s'additionnent lors de la stratification et l'empêchement de l'apparition d'efforts de cisaillement entre les différentes couches par des différences de vitesses ou des mesures analogues. Il va de soi que dans la filière d'extrudeuse du genre précité, This is the sum of the mechanical measures that ensure unmixed stratification. This includes taking into account the mass fluxes that add up during lamination and preventing the occurrence of shear forces between the different layers by velocity differences or similar measurements. It goes without saying that in the extruder die of the above kind,
les parties inférieure et supérieure de la filière sont dis- the lower and upper parts of the die are
posées à symétrie de révolution autour de l'axe de la filière, à l'exception des conduits d'amenée. D'une manière analogue, les canaux de transfert et la fente annulaire de sortie sont conformés, eux aussi, à symétrie de révolution. De plus, il va de soi que le noyau peut comporter un système d'arrivée placed symmetrically around the axis of the die, with the exception of the supply ducts. In a similar way, the transfer channels and the annular exit slot are also symmetrical of revolution. Moreover, it goes without saying that the kernel can include an arrival system
d'air de soufflage et éventuellement aussi un système d'éva- blowing air and possibly also an evaluation system
cuation d'air de soufflage lorsqu'il s'agit de la fabrica- blowing air when it comes to the manufacture of
tion de feuilles soufflées.blown sheets.
Dans la filière d'extrudeuse du genre décrit, bien connue dans la pratique, les conduits d'amenée de la partie inférieure de la filière débouchent respectivement dans un In the extruder die of the kind described, which is well known in the art, the feed ducts of the lower part of the die open into a
canal de transfert particulier. Le dispositif de stratifica- particular transfer channel. The laminating device
tion se trouve dans la partie supérieure de la filière. Il is in the upper part of the die. he
se compose d'une pluralité de distributeurs à hélice corres- consists of a plurality of corresponding helical distributors
pondant à une pluralité de flux de matière plastique, qui sont emboîtés les uns dans les autres et raccordés à la pluralité des canaux de transfert auxquels fait suite un canal se rétrécissant coniquement en direction de- la fente annulaire de sortie dans laquelle se produit la stratification proprement dite. Les distributeurs à hélice sont montés en amont parce que les canaux de transfert pour la pluralité des flux de matière plastique sont divisés dans la partie supérieure de la filière par des barrettes de noyau qui immobilisent ou supportent le noyau. Des influences gênantes sur les flux de matière plastique doivent être supprimées dans les distributeurs à hélice avant de pouvoir réaliser la stratification de telle façon que, sur ce point, les spanning a plurality of plastic streams, which are nested within each other and connected to the plurality of transfer channels which follow a conically tapering channel towards the exit annular slot in which lamination takes place proper. The impeller dispensers are mounted upstream because the transfer channels for the plurality of plastic streams are divided in the upper part of the die by core bars which immobilize or support the core. Harmful influences on the flow of plastic material must be eliminated in the propeller distributors before the stratification can be carried out in such a way that, on this point, the
distributeurs à hélice font partie du dispositif de strati- propeller distributors are part of the struc-
fication et le rendent compliqué et coûteux. Le temps de service sans défaillance est souvent insuffisant parce que and make it complicated and expensive. The service time without fail is often insufficient because
de la matière plastique peut rester coincée dans les distri- plastic may be stuck in the
buteurs à hélice. Dans ce cas, il est nécessaire de procéder à un démontage coûteux des distributeurs à hélice emboîtés propeller scorers. In this case, it is necessary to carry out an expensive disassembly of the nested propeller distributors
les uns dans les autres, à leur nettoyage et à leur remontage. in each other, cleaning and reassembling them.
La présente invention a pour objet de perfectionner une filière d'extrudeuse du genre précité de telle façon qu'il n'est plus nécessaire de prévoir une partie supérieure de filière avec une pluralité de distributeurs à hélice The object of the present invention is to improve an extruder die of the aforementioned type so that it is no longer necessary to provide a die upper part with a plurality of helical distributors.
emboîtés.nested.
Selon l'invention, ce but est atteint par le fait que les conduits d'amenée débouchent dans un seul canal de transfert en forme de fente annulaire dépourvu de barrettes de noyau et entourant le noyau de la filière, ledit canal de transfert étant conformé en dispositif de stratification, et que la fente annulaire de sortie est raccordée au dispositif de stratification par l'intermédiaire d'un seul canal de transfert, sans barrettes de noyau, de la partie supérieure de la filière. L'invention met à profit la découverte qu'il n'est pas nécessaire pour une filière d'extrudeuse du type décrit ci-dessus de placer le dispositif de stratification dans la partie supérieure de la filière, peu avant la fente According to the invention, this object is achieved by the fact that the supply ducts open into a single annular slot-shaped transfer channel devoid of core strips and surrounding the core of the die, said transfer channel being shaped into laminating device, and that the annular exit slot is connected to the laminator by means of a single transfer channel, without core bars, the upper part of the die. The invention exploits the discovery that it is not necessary for an extruder die of the type described above to place the lamination device in the upper part of the die, shortly before the slot.
annulaire de sortie. En logeant le dispositif de stratifica- annular exit. By housing the stratification device
tion dans la partie inférieure de la filière et en adoptant, par ailleurs, la disposition décrite, il est étonnant de constater qu'aucun mélange ne se produit sur le parcours ultérieur du flux de matière plastique multicouche, entre le in the lower part of the die and by adopting, moreover, the arrangement described, it is surprising to note that no mixing occurs on the subsequent course of the flow of multilayer plastic material, between the
dispositif de stratification et la fente annulaire de sortie. layering device and the annular exit slot.
De plus, l'invention met à profit le fait que des barrettes In addition, the invention takes advantage of the fact that
2593 122593 12
ne sont plus nécessaires pour le maintien ou la fixation du noyau de la filière lorsque les conduits d'amenée débouchent dans l'unique canal de transfert en forme de fente annulaire no longer necessary for holding or securing the die core when the supply lines open into the single ring-shaped transfer channel
qui entoure le noyau de la filière. which surrounds the core of the die.
Pour la filière d'extrudeuse selon l'invention, il For the extruder die according to the invention,
peut être avantageux d'adapter l'épaisseur de la fente annu- may be advantageous to adjust the thickness of the annular slot
laire de sortie aux conditions de service spéciales et aux matières plastiques mises en oeuvre. Pour cela, il est prévu output area under special service conditions and plastics used. For this, it is planned
selon l'invention que la fente annulaire de sortie est con- according to the invention that the annular exit slot is
formée en tant qu'embouchure d'une section conique du canal de transfert dans la partie supérieure de la filière, qui est disposée entre un élément de buse supérieur et un élément formed as a mouthpiece of a conical section of the transfer channel in the upper portion of the die, which is disposed between an upper nozzle member and a member
de buse inférieur. La largeur de la fente annulaire de sor- lower nozzle. The width of the annular slot of
tie peut alors être variable par réglage ou par remplacement d'au moins l'un des éléments de buse. Cette opération peut également être effectuée pendant la production et influencée par des mesures relevant de la technique du réglage. Pour assurer partout des conditions homogènes sur la circonférence tie can then be variable by adjustment or by replacing at least one of the nozzle elements. This operation can also be carried out during production and influenced by measures relating to the adjustment technique. To ensure homogeneous circumference conditions everywhere
de la feuille soufflée, ce qui comprend également une résis- of the blown sheet, which also includes a resistance
tance régulière à l'écoulement pour le flux de matière plas- flow rate for the flow of plastic material
tique stratifiée, l'invention recommande de placer dans le canal de transfert, dans le sens d'écoulement du flux de matière plastique multicouche et en amont de la section conique du canal de transfert, des ondulations qui s'étendent In the case of the laminate, the invention recommends placing corrugations in the transfer channel in the direction of flow of the multilayer plastic stream and upstream of the conical section of the transfer channel.
essentiellement dans le sens circonférentiel. essentially in the circumferential direction.
Les avantages obtenus résident dans le fait que, tout en renonçant à des distributeurs à hélice embottés les The advantages obtained lie in the fact that, while renouncing the use of
uns dans les autres, la filière d'extrudeuses selon l'in- in each other, the extruder die according to the
vention permet sans difficulté la fabrication de feuilles vention makes it easy to make sheets
soufflées multicouches réalisées à partir des matières ther- multilayer puffs made from thermal materials
moplastiques les plus diverses. De plus, la filière d'extru- a variety of moplastics. Moreover, the extrusion industry
deuse selon l'invention peut être réalisée facilement et deuse according to the invention can be carried out easily and
entretenue sans grandes dépenses.maintained without great expense.
La description qui va suivre, en regard du desîn The description that follows, next to the desîn
annexé à titre d'exemple non limitatif, permettra de bien annexed by way of non-limiting example, will allow
comprendre comment l'invention peut être mise en pratique. understand how the invention can be put into practice.
La figure unique représente une coupe axiale d'une The single figure represents an axial section of a
moitié d'une filière d'extrudeuse selon l'invention compor- half of an extruder die according to the invention comprising
tant les conduits d'amenée.both the supply ducts.
La filière d'extrudeuse représentée à la figure est destinée à la fabrication, par co-extrusion, d'une feuille soufflée multicouche à partir de plusieurs matières thermoplastiques stratifiées. Elle comprend fondamentalement une partie inférieure de filière i avec dispositif pour The extruder die shown in the figure is intended for the manufacture, by coextrusion, of a multilayer puffed sheet from a plurality of laminated thermoplastics. It basically comprises a lower part of die i with device for
l'amenée de plusieurs flux de matière plastique par l'inter- the supply of several flows of plastic material through the
médiaire d'une pluralité de conduits d'amenée 2, une partie supérieure de filière 3 avec fente annulaire de sortie 4 pour la sortie d'un flux de matière plastique multicouche sous forme de gaine, un noyau de filière 5 et un dispositif a plurality of supply ducts 2, a die upper portion 3 with annular exit slot 4 for the output of a multilayer plastic material stream in the form of a sheath, a die core 5 and a device
de stratification 6.of stratification 6.
Sont prévus, par ailleurs, des canaux de transfert 7, 8 dont l'un 7 est disposé dans la partie inférieure de In addition, transfer channels 7, 8 are provided, one of which 7 is arranged in the lower part of
filière 1, alors que l'autre 8 se situe dans lapartie supé- 1, while the other 8 is located in the upper part of
rieure de filière 3. Le canal de transfert 8 de la partie supérieure de filière 3 débouche dans la fente annulaire de 3. The transfer channel 8 of the die upper part 3 opens into the annular slot of
sortie 4.exit 4.
Les conduits d'amenée 2 débouchent dans le canal de transfert 7 unique, en forme de fente annulaire, dans la partie inférieure de filière 1, qui entoure le noyau de filière 5 et qui est dépourvu de barrettes de noyau. Il ressort nettement du dessin que ce canal de transfert 7 est conformé en dispositif de stratification 6, à savoir de The supply ducts 2 open into the single transfer channel 7, in the form of an annular slot, in the lower part of the die 1, which surrounds the die core 5 and which is devoid of core bars. It is clear from the drawing that this transfer channel 7 is shaped as a layering device 6, namely
telle façon que les flux massiques peuvent s'additionner. in such a way that the mass flows can add up.
Sur le plan de la conception, on a alors veillé soigneuse- In terms of design, care was taken
ment à ce que des efforts de cisaillement entre les diffé- shearing efforts between the different
rents flux de matière plastique soient évités par des dif- plastic streams are avoided by different
férences de vitesse ou des mesures analogues. La fente an- speed warnings or similar measures. The lunge slot
nulaire de sortie 4 est raccordée à ce dispositif de strati- output 4 is connected to this strati-
fication 6 par l'intermédiaire d'un seul canal de transfert 8 sans barrettes de noyau dans la partie supérieure de la filière. Dans l'exemple de réalisation et selon un mode de réalisation préféré de l'invention, la disposition a été choisie de telle façon que la fente annulaire de sortie 4 est conformée en embouchure d'une section conique 9 du canal de transfert 8 dans la partie supérieure de filière 3, 6 via a single transfer channel 8 without core bars in the upper part of the die. In the exemplary embodiment and according to a preferred embodiment of the invention, the arrangement has been chosen so that the annular outlet slot 4 is shaped at the mouth of a conical section 9 of the transfer channel 8 in the upper part of die 3,
laquelle section est disposée entre un élément de buse supé- which section is disposed between an upper nozzle element
rieur 10 et un élément de buse inférieur 11. La largeur de la fente annulaire de sortie 4 peut donc être modifiée par réglage ou par remplacement d'au moins l'un des éléments de buse 10, 11. Vues dans le sens de l'écoulement du flux de matière plastique multicouche, des ondulations 12, qui s'étendent essentiellement dans le sens circonférentiel et sont visibles dans la partie du dessin représentée à plus grande échelle, sont disposées dans le canal de transfert 8, 10, and a lower nozzle member 11. The width of the exit annular slot 4 can therefore be varied by adjusting or replacing at least one of the nozzle members 10, 11. Viewed in the direction of the flow of the multilayer plastic stream, undulations 12, which extend substantially in the circumferential direction and are visible in the portion of the drawing shown on a larger scale, are arranged in the transfer channel 8,
en amont de la section conique 9 du canal de transfert 8. upstream of the conical section 9 of the transfer channel 8.
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19863601345 DE3601345A1 (en) | 1986-01-18 | 1986-01-18 | EXTRACTION TOOL FOR THE PRODUCTION OF A MULTILAYER TUBULAR FILM |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2593112A1 true FR2593112A1 (en) | 1987-07-24 |
FR2593112B1 FR2593112B1 (en) | 1990-06-08 |
Family
ID=6292096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR878700465A Expired - Fee Related FR2593112B1 (en) | 1986-01-18 | 1987-01-16 | EXTRUDER DIE FOR THE MANUFACTURE OF A MULTILAYER BLOWN SHEET. |
Country Status (10)
Country | Link |
---|---|
BE (1) | BE1001610A4 (en) |
DD (1) | DD253216A5 (en) |
DE (1) | DE3601345A1 (en) |
FI (1) | FI870132A (en) |
FR (1) | FR2593112B1 (en) |
GB (1) | GB2185931B (en) |
IT (1) | IT1201161B (en) |
NL (1) | NL8700104A (en) |
NO (1) | NO870158L (en) |
SE (1) | SE8700129L (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3720560C1 (en) * | 1987-06-22 | 1988-09-15 | Bekum Maschf Gmbh | Coextrusion head |
DE9216920U1 (en) * | 1992-10-13 | 1994-02-24 | Windmöller & Hölscher, 49525 Lengerich | Extrusion tool for the extrusion of melt hoses |
US7264836B2 (en) | 2003-03-21 | 2007-09-04 | Kraft Foods Holdings, Inc. | Production of triple coextruded baked bar goods |
DE102004001473B4 (en) * | 2003-11-10 | 2006-05-11 | Kuhne Gmbh | Film die |
US7470119B2 (en) | 2004-05-18 | 2008-12-30 | Wm. Wrighley Jr. Company | Confection center fill apparatus and method |
DE102008014342A1 (en) * | 2008-03-14 | 2009-10-01 | Roga Kg | Method for the production of tube like foil by extrusion, comprises decelerating and then accelerating flow speed of a coextrudate within an extrusion nozzle |
GB201112475D0 (en) | 2011-07-20 | 2011-08-31 | Kritis Plastika | Concentric co-extrusion die |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3308508A (en) * | 1964-10-02 | 1967-03-14 | Dow Chemical Co | Die |
US3337914A (en) * | 1966-01-03 | 1967-08-29 | Nat Distillers Chem Corp | Stacked extrusion die |
FR2007073A1 (en) * | 1968-04-26 | 1970-01-02 | Northern Petro Chem Co | |
CA904525A (en) * | 1969-03-29 | 1972-07-11 | Leco Industries Limited | Co-extrusion device |
US3802826A (en) * | 1970-03-31 | 1974-04-09 | Nat Distillers Chem Corp | Rotatable co-extrusion die |
FR2234977A1 (en) * | 1973-06-27 | 1975-01-24 | Crown Zellerbach Corp | |
US3890083A (en) * | 1973-05-30 | 1975-06-17 | Leco Industries Ltd | Extrusion devices |
DE2752932A1 (en) * | 1977-11-26 | 1979-05-31 | Reifenhaeuser Kg | RING SPLITTING TOOL FOR EXTRUSION OF THERMOPLASTIC PLASTIC |
JPS5624133A (en) * | 1979-08-07 | 1981-03-07 | Asahi Chem Ind Co Ltd | Molding die |
EP0063060A1 (en) * | 1981-04-09 | 1982-10-20 | COMPAGNIE FRANCAISE DE RAFFINAGE Société anonyme dite: | Head for extruding a tubular parison having at least one layer of material |
EP0076366A2 (en) * | 1981-10-05 | 1983-04-13 | Ball Corporation | Multilayer tubular body with uncentered barrier layer |
GB2153739A (en) * | 1983-12-27 | 1985-08-29 | Toyo Seikan Kaisha Ltd | Process for production of multi-layer polyethylene terephthalate pipes for (stretch) blow moulding |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3026565A (en) * | 1961-01-04 | 1962-03-27 | Franklin Res And Dev Corp | Extruder head for hollow products |
FR2557016A2 (en) * | 1983-12-23 | 1985-06-28 | Raffinage Cie Francaise | HEAD FOR EXTRUSION OF A TUBULAR PARAISON TO AT LEAST ONE LAYER OF POLYMERIC MATERIAL |
-
1986
- 1986-01-18 DE DE19863601345 patent/DE3601345A1/en not_active Withdrawn
-
1987
- 1987-01-14 FI FI870132A patent/FI870132A/en not_active Application Discontinuation
- 1987-01-14 GB GB8700774A patent/GB2185931B/en not_active Expired
- 1987-01-15 SE SE8700129A patent/SE8700129L/en not_active Application Discontinuation
- 1987-01-15 NO NO870158A patent/NO870158L/en unknown
- 1987-01-16 IT IT19103/87A patent/IT1201161B/en active
- 1987-01-16 FR FR878700465A patent/FR2593112B1/en not_active Expired - Fee Related
- 1987-01-16 NL NL8700104A patent/NL8700104A/en not_active Application Discontinuation
- 1987-01-16 BE BE8700016A patent/BE1001610A4/en not_active IP Right Cessation
- 1987-01-16 DD DD87299296A patent/DD253216A5/en unknown
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3308508A (en) * | 1964-10-02 | 1967-03-14 | Dow Chemical Co | Die |
US3337914A (en) * | 1966-01-03 | 1967-08-29 | Nat Distillers Chem Corp | Stacked extrusion die |
FR2007073A1 (en) * | 1968-04-26 | 1970-01-02 | Northern Petro Chem Co | |
CA904525A (en) * | 1969-03-29 | 1972-07-11 | Leco Industries Limited | Co-extrusion device |
US3802826A (en) * | 1970-03-31 | 1974-04-09 | Nat Distillers Chem Corp | Rotatable co-extrusion die |
US3890083A (en) * | 1973-05-30 | 1975-06-17 | Leco Industries Ltd | Extrusion devices |
FR2234977A1 (en) * | 1973-06-27 | 1975-01-24 | Crown Zellerbach Corp | |
DE2752932A1 (en) * | 1977-11-26 | 1979-05-31 | Reifenhaeuser Kg | RING SPLITTING TOOL FOR EXTRUSION OF THERMOPLASTIC PLASTIC |
JPS5624133A (en) * | 1979-08-07 | 1981-03-07 | Asahi Chem Ind Co Ltd | Molding die |
EP0063060A1 (en) * | 1981-04-09 | 1982-10-20 | COMPAGNIE FRANCAISE DE RAFFINAGE Société anonyme dite: | Head for extruding a tubular parison having at least one layer of material |
EP0076366A2 (en) * | 1981-10-05 | 1983-04-13 | Ball Corporation | Multilayer tubular body with uncentered barrier layer |
GB2153739A (en) * | 1983-12-27 | 1985-08-29 | Toyo Seikan Kaisha Ltd | Process for production of multi-layer polyethylene terephthalate pipes for (stretch) blow moulding |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN, vol. 5, no. 72 (M-68)[744], 14 mai 1981; & JP-A-56 24 133 (ASAHI DOW K.K.) 07-03-1981 * |
Also Published As
Publication number | Publication date |
---|---|
IT1201161B (en) | 1989-01-27 |
FI870132A0 (en) | 1987-01-14 |
GB8700774D0 (en) | 1987-02-18 |
FR2593112B1 (en) | 1990-06-08 |
SE8700129D0 (en) | 1987-01-15 |
NO870158L (en) | 1987-07-20 |
GB2185931B (en) | 1989-11-01 |
NO870158D0 (en) | 1987-01-15 |
FI870132A (en) | 1987-07-19 |
NL8700104A (en) | 1987-08-17 |
SE8700129L (en) | 1987-07-19 |
DE3601345A1 (en) | 1987-07-23 |
GB2185931A (en) | 1987-08-05 |
BE1001610A4 (en) | 1989-12-19 |
DD253216A5 (en) | 1988-01-13 |
IT8719103A0 (en) | 1987-01-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR880001779B1 (en) | Coextrusion device | |
EP0816047A3 (en) | Flow inverting homogenizer assembly | |
FR2886203A1 (en) | DIE FOR THE PRODUCTION OF PLANAR STRUCTURES OF LARGE WIDTH BASED ON PLASTIC MATERIAL | |
US5190711A (en) | Methods for processing polymers | |
JPS6365013B2 (en) | ||
FR2593112A1 (en) | EXTRUDER LINE FOR THE MANUFACTURE OF A MULTILAYER BREATHABLE SHEET | |
GB2329862A (en) | Annular co-extrusion die | |
EP0749822B1 (en) | Two-component extrusion die | |
NL1031061C2 (en) | Piping bag for applying food to a substrate. | |
EP0233434B1 (en) | Apparatus for the distribution of thermoplastic material for the manufacture of multi-layered sheets | |
EP0136959B1 (en) | Flat die for extrusion of multilayered and multicolored films, sheets or plates of plastic material | |
JPH0751308B2 (en) | Extruder for plastic pipes with composite walls | |
EP0961678B1 (en) | Extruder | |
EP0345987B1 (en) | Methods of making multiple layer sheet materials, methods of processing polymers, extrusion apparatus, polymeric sheet materials and packaging made therefrom | |
EP2032325A2 (en) | Device for packaging an adhesive-based product | |
EP0245314B1 (en) | Device for changing colour during the extrusion of a sheath around a conductor | |
JP2010508175A (en) | Annular feedblock and method for coextrusion film | |
FR2551396A1 (en) | SHEET BLOWING HEAD, WORKING VERTICALLY | |
CA1088881A (en) | Laminated tube for collapsible containers and method of making same | |
BE653675A (en) | ||
FR2559419A1 (en) | DEVICE FOR THE CONTINUOUS EXTRUSION OF A STRIP OF MULTI-LAYERED PLASTIC MATERIAL, INCLUDING A DEVICE FOR ADJUSTING THE INLET SLOT OF THE SECOND MATERIAL | |
EP0652097B1 (en) | Apparatus for combining at least two material streams in a coextrusion-laminating machine | |
AU6479099A (en) | Extrusion method, extruder and product produced thereby | |
JP4787132B2 (en) | T-die inner deckle device and T-die using the same | |
EP0002167A1 (en) | Method for making a complex protective coating |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |