FR2529824A1 - Device for introducing, into virgin material, grindings from the edges of an extruded sleeve made from a synthetic material. - Google Patents

Device for introducing, into virgin material, grindings from the edges of an extruded sleeve made from a synthetic material. Download PDF

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Publication number
FR2529824A1
FR2529824A1 FR8212425A FR8212425A FR2529824A1 FR 2529824 A1 FR2529824 A1 FR 2529824A1 FR 8212425 A FR8212425 A FR 8212425A FR 8212425 A FR8212425 A FR 8212425A FR 2529824 A1 FR2529824 A1 FR 2529824A1
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FR
France
Prior art keywords
selvedges
screw
tubular
agitator
hopper
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
FR8212425A
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French (fr)
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FR2529824B3 (en
Inventor
Tristan Orillard
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PROSYMECA
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PROSYMECA
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Filing date
Publication date
Application filed by PROSYMECA filed Critical PROSYMECA
Priority to FR8212425A priority Critical patent/FR2529824A1/en
Publication of FR2529824A1 publication Critical patent/FR2529824A1/en
Application granted granted Critical
Publication of FR2529824B3 publication Critical patent/FR2529824B3/fr
Granted legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/0005—Direct recuperation and re-use of scrap material during moulding operation, i.e. feed-back of used material
    • 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
    • B29C48/03—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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/286—Raw material dosing
    • 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
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
    • B29C48/2888—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules in band or in strip form, e.g. rubber strips
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/385—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in separate barrels
    • 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
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/008—Wide strips, e.g. films, webs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Abstract

This device comprises means 10 for bringing the edges 6 to a grinding station 12, means 13 for transferring the grindings 29 obtained and a tubular assembly 14 for distributing and mixing the grindings 29, which assembly is disposed in the vertical axis of the hopper 15 and whose upper end is attached to the means 13 for transferring the grindings, whereas its lower end 34a, which is adjustable in height, emerges below the level 14 of the virgin material 16 contained in the hopper 15, but above the end of the screw 17 of the extruder 18.

Description

L'invention est relative à un dispositif pour 1 l'in- troduction,dans de la matière vierge,des broyats de lisières de gaine en matière synthétique. The invention relates to a device for the introduction, into virgin material, of shredded sheath edges of synthetic material.

De façon connue,les nappes en matière synthétique et, par exemple,en polyéthylène,sont obtenues à partir de gaines qui,extrudées et soufflées,sont sectionnais latéralement à proximité de leurs bords pliés formant lisières
Ces lisières forment des bandes qui,en général,sont re- cueillies pour être broyés et mélangées avec d'autres déchts,de manière a former des granules utilisables pour la fabrication de produits de bas de gamme,tels que des sacs-poubellesO
Par ce procédé,la matière constitutive des bandes est réutilisée pour fabriquer des sous produits 9 alors meme qu'elle pourrait servir pour fabriquer des produits de qualité, c'est-à-dire être mélangée avec la matière vierge utilisée pour fabriquer la gaine dans laquelle les nappes sont découpées
les essais réalisés jusqu'à ce jour ont montré que s'il était facile de mélanger les broyats de lisières avec de la matière vierge,il était plus difficile,et mGme impossible, d'amener ce mélange jusqu'à l'extrudeuse.En effet,durant le transport de ce mélange jusqu'à la vis d'une extrudeuse, les granules les plus lourds, c'est-à-dire de la matière vierge,se séparent des granules de broyats plus légers et forment un courant préférentiel chassant ces broyats et les empochant de péntrer dans l'extrudeuse
La présente invention a pour but de fournir un dispositif qui remédie à ces inconvénients et permet de mélanger les broyats de lisières avec de la matière vierge et de maintenir ces produits en mélange jusqu'à leur introduction dans l'extrudeuse.In a known manner, the plies of synthetic material and, for example, of polyethylene, are obtained from sheaths which, extruded and blown, are sectioned laterally near their folded edges forming selvedges
These selvedges form strips which, in general, are collected to be crushed and mixed with other waste, so as to form granules which can be used for the manufacture of low-end products, such as trash bags.
By this process, the material from which the strips are made is reused to make by-products 9, even though it could be used to make quality products, that is to say mixed with the virgin material used to make the sheath in which the tablecloths are cut out
tests carried out to date have shown that if it was easy to mix the selvedge shreds with virgin material, it was more difficult, and even impossible, to bring this mixture to the extruder. in fact, during the transport of this mixture to the screw of an extruder, the heavier granules, that is to say virgin material, separate from the granules of lighter ground materials and form a preferential chasing current. these shreds and pocketing them to enter the extruder
The object of the present invention is to provide a device which overcomes these drawbacks and makes it possible to mix the shredded selvedges with virgin material and to keep these products in mixture until they are introduced into the extruder.

A cet effet,ce dispositif comprend des moyens pour amener les lisières à un poste de broyage,des moyens de transfert obtenus et un ensemble tubulaire de distribution et de mélange des broyats disposé dans l'axe vertical de la trémie et dont l'extrémité supérieure est raccordée aux moyens de transfert des broyats,tandis que son extrémité inférieure,réglable en hauteur,débouche au-dessous du niveau de matière vierge contenue dans la trémie,mais audessus de l'extrémité de la vis de l'extrudeuse. To this end, this device comprises means for bringing the selvedges to a grinding station, transfer means obtained and a tubular assembly for distributing and mixing shredded material arranged in the vertical axis of the hopper and the upper end of which is connected to the shredded transfer means, while its lower end, adjustable in height, opens below the level of virgin material contained in the hopper, but above the end of the extruder screw.

Avec cet agencement,les broyats de lisières sont entrainés par les granules de matière vierge et mélangés avec eux,sans risque de séparation,'usqu a leur introduction dans la vis .Le réglage des conditions de mélange broyats-matière vierge et du dépassement de la vis est obtenu par modification de la position de l'extrémité in inférieure de l'ensemble tubulaire0
Dans une forme d'exécution préférée de l'invention, l'ensemble tubulaire de distribution est muni ix;;érieure- ment d un agitateur qui, empêchant les broyats de former des voûtes F ant leur déplacement, se prolonge au-delà de l'extrémité inférieure de l'ensemble tubulaire et vient an voisinage de la vis de l'extrudeuse ,mais sans contact avec elle,
l'invention sera a-eux comprise à l'aide de l'unique figure du dessin schématique annexé représentant, à titre dgexemple non limitatif, une forme d'exécution de ce dispositif
il cette figure, 2 désigne un film ou gaine de matière synthétique se déplacent dans le sens de la flèche 3 et s'evidant sur une bobine 4 # 5 désigne des couteaux de découpage séparant les lisières 6 du reste de la nappe,de manière à affranchir les bords du film ou des deux films superposés formes dans la gaine. With this arrangement, the shredded selvedges are entrained by the granules of virgin material and mixed with them, without risk of separation, until they are introduced into the screw. The adjustment of the conditions for shredding of virgin material and the overshoot of screw is obtained by modifying the position of the lower end of the tubular assembly
In a preferred embodiment of the invention, the tubular distribution assembly is provided with a stirrer which, preventing the shreds from forming vaults F before their movement, extends beyond the the lower end of the tubular assembly and comes in the vicinity of the screw of the extruder, but without contact with it,
will the invention be understood with the aid of the single figure of the appended schematic drawing representing, by way of non-limiting example, an embodiment of this device
this figure, 2 designates a film or sheath of synthetic material moving in the direction of the arrow 3 and being hollowed out on a reel 4 # 5 designates cutting knives separating the selvedges 6 from the rest of the web, so as to frank the edges of the film or of the two superimposed films formed in the sheath.

le dispositif selon l'invention comprend des moyens 10 pour amener les lisières 6 à un poste de broyage 12,des moyens 13 dc distribution des broyats des deux lisières et un ensemble tubulaire 14 de distribution et de mélange des broyats coopérant avec la trémie 15 de distribution de matière vierge 16 en direction de la vis 17 d'une extrudeuse 18
les moyens 10,amenant les lisières 6 au poste de broyage 12, sont constitués par une tubulure 19,débouchant dans un cyclone 20 disposé en amont du broyeur 12.Cette tubulure 19 comporte,latéralement,deux goulottes 22 d'entrée pour une lisière 6 et,axialement,entre son extrémité et le cyclone 20,un venturi 23.Ce venturi est alimenté en air par un ventilateur 24 débitant dans un colimaçon 25,grâce auquel la tubulure 19 est alimentée en amont du venturi 23 par un courant d'air tourbillonnaire.Ce courant tourbillonnaire assure l'emmelement des deux lisières 6, qui forment ainsi une unique bande 27 plus facilement con= voyable et dirigeable. Cette bande 27 est ainsi amenée dans le cyclone 20 avant diEtre broyée par les éléments de broyage 28 du poste de broyage 12. les broyat 29,ainsi obte nus,sont déplacés par les moyens 13 constitués par une tu tubulure 30 aboutissant dans un cyclone 32 et dans laquelle débite un ventilateur 33. the device according to the invention comprises means 10 for bringing the selvedges 6 to a grinding station 12, means 13 dc for distributing the shredded material from the two selvedges and a tubular assembly 14 for distributing and mixing the shredded material cooperating with the hopper 15 of distribution of virgin material 16 towards the screw 17 of an extruder 18
the means 10, bringing the selvedges 6 to the grinding station 12, are constituted by a pipe 19, opening into a cyclone 20 disposed upstream of the crusher 12. This pipe 19 comprises, laterally, two inlet chutes 22 for a selvedge 6 and, axially, between its end and the cyclone 20, a venturi 23. This venturi is supplied with air by a fan 24 delivering through a spiral 25, by means of which the tube 19 is supplied upstream of the venturi 23 by a current of air This vortex current ensures the entanglement of the two selvedges 6, which thus form a single band 27 more easily con = seeable and steerable. This strip 27 is thus brought into the cyclone 20 before being crushed by the crushing elements 28 of the crushing station 12. the crushed material 29, thus obtained naked, are moved by the means 13 constituted by a pipe 30 ending in a cyclone 32 and in which a fan 33 flows.

L'ensemble de distribution 14 des broyats 29 est composé d'une partie fixe 31 et d'une partie tubulaire 34 montée coulissante sur elle avec possibilité de blocage au moyen,par exemple,d'une vis transversale .la partie supérieure 31 est raccordée par un conduit 36 au cyclone 32 afin que les broyats-29 pénètrent à l'intérieur de l'en- semble tubulaire 14. la partie 31 comporte également un moteur 37 apte à entrainer en rotation un agitateur 38 constitué,dans la forme d'exécution représentée,par un ressort hélicoïdal à fil de section prismatique, et dont l'extrémité té supérieure est liée a' l'arbre de sortie du moteur .  The distribution assembly 14 of the shredded material 29 is composed of a fixed part 31 and of a tubular part 34 slidingly mounted on it with the possibility of blocking by means, for example, of a transverse screw. The upper part 31 is connected by a conduit 36 to the cyclone 32 so that the shreds-29 penetrate inside the tubular assembly 14. the part 31 also includes a motor 37 capable of driving in rotation a stirrer 38 constituted, in the form of execution shown, by a helical spring with a prismatic section wire, the upper end of which is linked to the output shaft of the motor.

L'extrémité inférieure de l'agitateur 38 dépasse de l'ex- trémité inférieure 34a de la partie tubulaire 34 et vient au voisinage immédiat de la vis 17 de l'extrudeuse tsans pour autant être en contact avec eelle-ci. The lower end of the agitator 38 protrudes from the lower end 34a of the tubular part 34 and comes in the immediate vicinity of the screw 17 of the tsans extruder provided that it is in contact with it.

1,extrémité inférieure 34a de l'ensemble 14 est disposée au-dessous du niveau supérieur 40 de la matière vierge 16 contenue dans la trémie 15,et au-dessus de la vis 17 de l'extrudeuse.La distance H entre cette extrémité 34a et la vis 17 peut être réglée par coulissement de la partie tubulaire 34 sur la partie fixe 31 de l'ensemble tubulaire 14, par exemple,pour ajuster les conditions de mélange entre la matière vierge 16 et les broyats 29. 1, lower end 34a of the assembly 14 is disposed below the upper level 40 of the virgin material 16 contained in the hopper 15, and above the screw 17 of the extruder. The distance H between this end 34a and the screw 17 can be adjusted by sliding the tubular part 34 on the fixed part 31 of the tubular assembly 14, for example, to adjust the mixing conditions between the virgin material 16 and the comminuted material 29.

Avec ce dispositif,les broyats 29 ,quittant l'ensemble tubulaire 14,se mélangent à la matière vierge 16 à proximité immédiate de la vis 17 de l'extrudeuse .Le mélange descend régulièrement dans l'extrudeuse grâce à la partie de l'agitateur 38 qui,dépassant de l'ensemble tubulaire,évite la formation de voutes et pousse,sans forcer, le mélange .Grâce à la faible distance H entre l'extrémité inférieure de l'ensemble de distribution 14 et la vis ,l'extrudeuse 18 est alimentée par un débit continu de broyats 29 et de matière vierge 16 en mélange dans une proportion stable0
I1 apparaît donc que le dispositif selon l'invention permet de supprimer les risques de séparation des compo sauts du mélange provenant des différences de densité en tre les br$yats et la matière vierge,séparation s'effectuant lois de tout déplacement de ce mélange.With this device, the shredded material 29, leaving the tubular assembly 14, mixes with the virgin material 16 in the immediate vicinity of the screw 17 of the extruder. The mixture descends regularly in the extruder thanks to the part of the agitator 38 which, protruding from the tubular assembly, avoids the formation of arches and pushes, without forcing, the mixture. Thanks to the short distance H between the lower end of the distribution assembly 14 and the screw, the extruder 18 is fed by a continuous flow of ground material 29 and virgin material 16 mixed in a stable proportion0
It therefore appears that the device according to the invention makes it possible to eliminate the risks of separation of the components of the mixture originating from the differences in density between the br $ yats and the virgin material, separation taking place under the laws of any displacement of this mixture.

I1 est e noter que l'agitateur 38,constitué par un ressort à fil de section carre,est entrainé avec une vitesse de rotation faible,de l'ordre de 200 tours/minute, afin de communiquer aux broyats un mouvement de déplacement vers le bas qui,sans pour autant exercer sur ces broyats un effort important,est susceptible de leur communiquer une vitesse de déplacement supérieure à celle de la matière vierge contenue dans la trémie 15.  It should be noted that the agitator 38, constituted by a square section wire spring, is driven with a low speed of rotation, of the order of 200 revolutions / minute, in order to communicate to the shredded materials a movement of movement towards the bottom which, without exerting a significant effort on these shreds, is capable of imparting to them a speed of movement greater than that of the virgin material contained in the hopper 15.

Claims (6)

-REVENDICATIONS- CLAIMS 1-Dispositif pour l'introduction dans de la matière vierge (16) de broyats (29) de lisières (6) d'une gaine (2) en matière synthétique,caractérisé en ce qu'il comprend des moyens (10) pour amener les lisières (6) à un poste de broyage (12),des moyens (13) de transfert des broyats (29) obtenus,et un ensemble tubulaire (14) de dis tribution et de mélange des broyats (29) disposé dans l'axe vertical de la trémie 15) et dont l'extrémité supérieure est raccordée aux moyens (13) de transfert des broyats, tandis que son extrémité inférieure (34a),réglable en hauteur,déboche au-dessous du niveau (40)de matière vier ge (16) contenue dans la trémie (15) ,mais au-dessus de l'extrémité de la vis (17) de ltextrudellse (18).  1-Device for the introduction into virgin material (16) of ground material (29) of selvedges (6) of a sheath (2) of synthetic material, characterized in that it comprises means (10) for bringing the selvedges (6) at a grinding station (12), means (13) for transferring the shredded material (29) obtained, and a tubular assembly (14) for distributing and mixing the shredded material (29) disposed in the vertical axis of the hopper 15) and the upper end of which is connected to the means (13) for transfer of the comminuted material, while its lower end (34a), adjustable in height, opens below the level (40) of material ge (16) contained in the hopper (15), but above the end of the screw (17) of ltextrudellse (18). 2-Dispositif selon la revendication 1, caractérisé en ce que l'ensemble tubulaire de distribution (14) est muni intérieurement d'un agitateur (38) emp8chaat les broyats de former des vouâtes s'opposant à leur déplacement 2-Device according to claim 1, characterized in that the tubular distribution assembly (14) is provided internally with an agitator (38) emp8chaat the shreds to form vouâtes opposing their movement 3-Dispositif selon l'ensemble des revendications 1 et 2,caractérisé en ce que l'agitateur (38) se prolonge audelà de l'extrémité inférieure (34a) de l'ensemble tubulaire de distribution (14) et vient au voisinage immédiat de la vis (17) de l'extrudeuse (18), mais sans coeftact avec elle. 3-Device according to all of claims 1 and 2, characterized in that the agitator (38) extends beyond the lower end (34a) of the tubular distribution assembly (14) and comes in the immediate vicinity of the screw (17) of the extruder (18), but without coeftact with it. 4-Dispositif selon l'ensemble des revendications 9 à 3, caractérisé en ce que l'agitateur (38) est constitué par un ressort hélicoïdal disposé à l'intérieur de l'ensemble tubulaire (14),coexialement a celui-ci et dont l'extrémité inférieure est libre,tandis que l'extrémité supérieure est reliée à des moyens moteurs (37) aptes à l'entrainer en rotation. 4-Device according to all of claims 9 to 3, characterized in that the agitator (38) is constituted by a helical spring disposed inside the tubular assembly (14), co-axial therewith and of which the lower end is free, while the upper end is connected to motor means (37) capable of driving it in rotation. 5-Dispositif selon la revendication 4,caractérisé en ce que le ressort hélicoidal est constitué par un fil de section prismatique. 5-Device according to claim 4, characterized in that the helical spring consists of a prismatic section wire. 6-Dispositif selon la revendication 1 et l'une quelconque des revendications 2 à 6,caractérisé en ce que les moyens (10) amenant les lisières (6) au poste de broyage (12) sont constitués par une tubulure (19) qui,débouchant dans un cyclone (20),en amont du broyeur,comporte latéralement ,deux goulottes d'entrée (22) pour les deux lisières (6) et,axialement,un venturi (23) alimenté par un ventilateur (24) avec colimaçon (25).  6-Device according to claim 1 and any one of claims 2 to 6, characterized in that the means (10) bringing the selvedges (6) to the grinding station (12) consist of a tube (19) which, emerging in a cyclone (20), upstream of the crusher, comprises laterally, two inlet chutes (22) for the two selvedges (6) and, axially, a venturi (23) supplied by a fan (24) with spiral ( 25).
FR8212425A 1982-07-12 1982-07-12 Device for introducing, into virgin material, grindings from the edges of an extruded sleeve made from a synthetic material. Granted FR2529824A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8212425A FR2529824A1 (en) 1982-07-12 1982-07-12 Device for introducing, into virgin material, grindings from the edges of an extruded sleeve made from a synthetic material.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8212425A FR2529824A1 (en) 1982-07-12 1982-07-12 Device for introducing, into virgin material, grindings from the edges of an extruded sleeve made from a synthetic material.

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FR2529824A1 true FR2529824A1 (en) 1984-01-13
FR2529824B3 FR2529824B3 (en) 1985-05-24

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986000561A1 (en) * 1984-07-12 1986-01-30 Maskin Ab Rapid A method and apparatus for recovering plastics material
WO2019185169A1 (en) * 2018-03-30 2019-10-03 Toyota Motor Europe Conveying system and compounding system comprising the same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986000561A1 (en) * 1984-07-12 1986-01-30 Maskin Ab Rapid A method and apparatus for recovering plastics material
WO2019185169A1 (en) * 2018-03-30 2019-10-03 Toyota Motor Europe Conveying system and compounding system comprising the same
CN111770823A (en) * 2018-03-30 2020-10-13 丰田自动车欧洲公司 Conveying system and mixing system comprising same
JP2021518291A (en) * 2018-03-30 2021-08-02 トヨタ モーター ヨーロッパ Transport system and synthesis system equipped with it
CN111770823B (en) * 2018-03-30 2022-08-12 丰田自动车欧洲公司 Conveying system and mixing system comprising same
US11926075B2 (en) 2018-03-30 2024-03-12 Toyota Motor Europe Conveying system and compounding system comprising the same

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