FR2490545A1 - System for reprocessing used or waste polyethylene film - with removal of soluble contaminants and reconstitution as dry pellets - Google Patents
System for reprocessing used or waste polyethylene film - with removal of soluble contaminants and reconstitution as dry pellets Download PDFInfo
- Publication number
- FR2490545A1 FR2490545A1 FR8020380A FR8020380A FR2490545A1 FR 2490545 A1 FR2490545 A1 FR 2490545A1 FR 8020380 A FR8020380 A FR 8020380A FR 8020380 A FR8020380 A FR 8020380A FR 2490545 A1 FR2490545 A1 FR 2490545A1
- Authority
- FR
- France
- Prior art keywords
- product
- silos
- storage
- soluble contaminants
- dry
- 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.)
- Withdrawn
Links
- 239000002699 waste material Substances 0.000 title claims abstract description 8
- 239000004698 Polyethylene Substances 0.000 title claims description 4
- -1 polyethylene Polymers 0.000 title claims description 4
- 229920000573 polyethylene Polymers 0.000 title claims description 4
- 239000000356 contaminant Substances 0.000 title abstract 3
- 239000008188 pellet Substances 0.000 title abstract 2
- 238000012958 reprocessing Methods 0.000 title 1
- 238000003860 storage Methods 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000005469 granulation Methods 0.000 claims abstract description 6
- 230000003179 granulation Effects 0.000 claims abstract description 6
- 238000000227 grinding Methods 0.000 claims description 5
- 238000000265 homogenisation Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 230000008929 regeneration Effects 0.000 claims description 2
- 238000011069 regeneration method Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 239000008237 rinsing water Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
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
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
-
- 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
- B29B17/02—Separating plastics from other materials
-
- 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
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0286—Cleaning means used for separation
- B29B2017/0289—Washing the materials in liquids
-
- 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
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
-
- 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/065—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts containing impurities
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
L'objet de l'invention concerne un dispositif pour la régénération en continu de feuilles polyethylène usagées. The object of the invention relates to a device for the continuous regeneration of used polyethylene sheets.
I1 est destiné à la récupération des feuilles usagées et déchets de polyethylène en feuilles. It is intended for the recovery of used sheets and polyethylene waste in sheets.
I1 existe des procédés et dispositifs pour la récupération des déchets de fabrication chez les transformateurs. There are methods and devices for recovering manufacturing waste from processors.
On utilise à cete effet des machines densifieuses ou densifieurs qui consistent en un bol cylindrique dont le fond est muni d'un rotor équipé de couteaux et tournant à grande vitesse. L'alimentation se fait par le dessus manuellement et nécessite un produit préalablement conditionné en morceaux de feuilles de 1 mètre carré au plus. Densifying or densifying machines are used for this purpose, which consist of a cylindrical bowl whose bottom is provided with a rotor equipped with knives and rotating at high speed. The feeding is done by the top manually and requires a product previously conditioned in pieces of leaves of 1 square meter at most.
Un opérateur surveille le broyage et verse de l1eau froide sur la pâte chaude au moment qui lui semble le meilleur pour la faire exploser. Ce produit éclaté devra être regranulé après filtration. An operator monitors the grinding and pours cold water over the hot dough at the time he thinks best to explode it. This exploded product must be regranulated after filtration.
Ce procédé limite son utilisation aux feuilles propres et séches, car les impuretés restent incorporées à la mastère et l'humidité prolonge le temps de montée en température. This process limits its use to clean and dry leaves, because the impurities remain incorporated in the master and the humidity prolongs the time of temperature rise.
Enfin on ne peut récupérer que les déchets de fabrication de même nature. Finally, we can only recover manufacturing waste of the same kind.
Le dispositif suivant l'invention permet la récupération de feuilles plastiques usagées et à l'état de déchets pour réaliser une fabrication en continu, d'un produit de qualité constante et homogène, quelle que soit l'origine des lots traités en leur état de Propreté, d'humidité ou de qualité. The device according to the invention allows the recovery of used plastic sheets and in the state of waste in order to produce a continuous production of a product of constant and homogeneous quality, whatever the origin of the batches treated in their state of Cleanliness, humidity or quality.
Il consiste en une série de traitements au moyen d'éléments combinés assurant dans des conditions déterminées le lavage, le séchage, le stockage, la granulation pour en finir par l'homogénéisation ainsi que le conditionnement. It consists of a series of treatments by means of combined elements ensuring under determined conditions washing, drying, storage, granulation to finish with homogenization as well as packaging.
Sur le dessin annexé, donné à titre d'exemple non limitatif, d'une des formes de réalisation de l'objet de l'invention:
Le dispositif est représenté dans son ensemble vu en coupe longitudinale et en élévation. In the attached drawing, given by way of nonlimiting example, of one of the embodiments of the subject of the invention:
The device is shown as a whole seen in longitudinal section and in elevation.
Le dispositif comporte un élément de broyage 1 constitué Par un broyeur à couteaux ét grille fixe, modifie spécialement pour broyer les thermoplastiques sous forme de film quelles que soient leurs dimensions et leurs épaisseurs. The device comprises a grinding element 1 constituted by a knife grinder and fixed grid, specially modified to grind thermoplastics in the form of a film, whatever their dimensions and thicknesses.
Ce broyeur étanche 1 travaille en dépression et les copeaux de film ainsi obtenus sont soufflés dans un cyclone 2. This sealed mill 1 works under vacuum and the film shavings thus obtained are blown into a cyclone 2.
Ces copeaux de film à leur arrivée dans le cyclone de prémouillage 2 sont pris dans un courant d'eau et projetés dans un malaxeur 3 à double vis, afin que les copeaux qui auraient pu être agglomérés au broyage, soient séparés. These film shavings upon their arrival in the pre-wetting cyclone 2 are taken in a stream of water and sprayed into a mixer 3 with a double screw, so that the shavings which could have been agglomerated during grinding are separated.
Sous l'effet du malaxage dans le courant d'eau, les impuretés collées sur le film commencent à etre détachées. Under the effect of mixing in the water stream, the impurities stuck on the film begin to be detached.
A la sortie de ce malaxeur rapide, les copeaux sont décantés dans un malaxeur lent 4 et extrait à l'aide d ' un racleur à chaine 5, sur une tôle perforée 6 qui sert de support au rin çage. Lè produit est rincé et amené par le transporteur 7 dans la trémie 8. At the outlet of this rapid mixer, the shavings are decanted in a slow mixer 4 and extracted using a chain scraper 5, on a perforated sheet 6 which serves as a support for rinsing. The product is rinsed and brought by the conveyor 7 into the hopper 8.
L ' eau de rinçage sert également à compenser les pertes en eau de l'ensemble des opérations de lavage. The rinsing water is also used to compensate for the water losses from all washing operations.
L ' eau de prémouillage injectée dans le cyclone est de l'eau pompée au niveau du rinçage. The pre-wetting water injected into the cyclone is water pumped at the level of the rinsing.
De ce fait, lavé puis rincé, le produit est déversé dans la trémie 8 reliée à une essoreuse 9 qui le sépare de la plus grosse partie de son eau. Therefore, washed and then rinsed, the product is poured into the hopper 8 connected to a wringer 9 which separates it from most of its water.
Le produit est extrait de l'essoreuse 9 par aspiration 10 et, est reprise par les tours de séchage 11, 12, 13 , avec générateur d' air chaud 11 ' . The product is extracted from the wringer 9 by suction 10 and is taken up by the drying towers 11, 12, 13, with a hot air generator 11 '.
Les transports pneumatiques au sortie de ces tours se font par air chaud entre 80 et 900. Cet air chaud est produit par un ,générateur de petites dimensions et à faible consommation. The pneumatic transport at the exit of these towers is by hot air between 80 and 900. This hot air is produced by a generator, of small dimensions and with low consumption.
Le produit est alors acheminé vers les éléments de stockage, une fois sec et propre, il est stocké dans des silos 14, 15 de section conique renversée. Ces silos servent de tampon à l'ensemble de granulation qui marche en continu. The product is then transported to the storage elements, once dry and clean, it is stored in silos 14, 15 of inverted conical section. These silos serve as a buffer for the granulation unit which operates continuously.
Ces silos sont munis d'un appareillage antimontant et d'extraction forcée avec brise voûte 16,17, car il ne s 'écou- le pas lui-même. These silos are fitted with anti-assembly and forced extraction equipment with a roof breaker 16,17, because it does not drain itself.
A la sortie des silos de stockage le produit est acheminé par le transporteur 18 dans la trémie 19 avec vis de gavage hydraulique 20, pour être acheminé vers la granulatrice 21 avec filtre automatique. At the outlet of the storage silos the product is conveyed by the conveyor 18 in the hopper 19 with hydraulic booster screw 20, to be conveyed to the granulator 21 with automatic filter.
Cette vis de gavage 20 est entraînée par une ensemble hydraulique qui maintient une pression constante afin d ' assurer une granulation homogène. This booster screw 20 is driven by a hydraulic assembly which maintains a constant pressure in order to ensure homogeneous granulation.
Le profil de vis permet un dégazage par un effet de vide, en tête avant granulation, un filtre de sécurité évite l'introduction de corps étrangers à la matière. The screw profile allows degassing by a vacuum effect, at the head before granulation, a safety filter prevents the introduction of foreign bodies to the material.
Ce système de coupe en tête assure une parfaite régularité dans la granulométrie de la matière. This head cutting system ensures perfect regularity in the grain size of the material.
A ce moment le produit subit un dernier contrôle de granulométrie et de séchage. At this time the product undergoes a final particle size and drying control.
Le produit est finalement stocké dans des silos 22, 23, d'homogénéisation équipés intérieurement d'un jeu de tuyauteries 2, 25 coupées à différentes hauteurs, ce qui permet de reprendre le produit à différentes hauteurs dans le silo . Des distributeurs pour ensachage 26, 27 sont placés à la base des dits silos. The product is finally stored in silos 22, 23, homogenization internally equipped with a set of pipes 2, 25 cut at different heights, which allows to take the product at different heights in the silo. Distributors for bagging 26, 27 are placed at the base of said silos.
Ce produit recyclé alors du bas du silo vers le haut ne différentes reprises est ainsi homogénéisé avant d'être ensaché pour son utilisation industrielle. This product, which is then recycled from the bottom of the silo upwards on different occasions, is thus homogenized before being bagged for industrial use.
Toutefois les formes, dimensions et dispositions des différents éléments comme d ' ailleurs les matières utilisées pour leur fabrication, pourront varier dans la limite des équivalents sans changer pour cela la conception générale de l'invention qui vient d'être décrite. However, the shapes, dimensions and arrangements of the various elements, like the materials used for their manufacture, may vary within the limit of equivalents without thereby changing the general design of the invention which has just been described.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8020380A FR2490545A1 (en) | 1980-09-19 | 1980-09-19 | System for reprocessing used or waste polyethylene film - with removal of soluble contaminants and reconstitution as dry pellets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8020380A FR2490545A1 (en) | 1980-09-19 | 1980-09-19 | System for reprocessing used or waste polyethylene film - with removal of soluble contaminants and reconstitution as dry pellets |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2490545A1 true FR2490545A1 (en) | 1982-03-26 |
Family
ID=9246192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8020380A Withdrawn FR2490545A1 (en) | 1980-09-19 | 1980-09-19 | System for reprocessing used or waste polyethylene film - with removal of soluble contaminants and reconstitution as dry pellets |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2490545A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4122277A1 (en) * | 1991-07-05 | 1993-01-07 | Nordenia Verpackung | METHOD FOR TREATING USED OBJECTS FROM POLYOLEFIN TO REUSABLE RAW MATERIAL |
| ITPD20110166A1 (en) * | 2011-05-24 | 2012-11-25 | Ergomec Srl | PLASTIC RECOVERY MATERIAL MANAGEMENT SYSTEM |
| GB2604599A (en) * | 2021-03-05 | 2022-09-14 | Loowatt Ltd | A waste processing apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE120168C (en) * | ||||
| US2053038A (en) * | 1933-07-31 | 1936-09-01 | Abilene Cotton Oil Company | Apparatus for separating and cleaning material |
| FR2159260A2 (en) * | 1971-11-12 | 1973-06-22 | Beck Erich | |
| GB1411378A (en) * | 1971-12-07 | 1975-10-22 | Leesona Plastics Machinery Ltd | Plant to reclaim thermoplastic scrap material |
| DE2416573A1 (en) * | 1974-04-05 | 1975-10-30 | Buckau Wolf Maschf R | Regenerating synthetic plastic waste from textile industry - by washing centrifugal drying rinsing and drying in batches |
-
1980
- 1980-09-19 FR FR8020380A patent/FR2490545A1/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE120168C (en) * | ||||
| US2053038A (en) * | 1933-07-31 | 1936-09-01 | Abilene Cotton Oil Company | Apparatus for separating and cleaning material |
| FR2159260A2 (en) * | 1971-11-12 | 1973-06-22 | Beck Erich | |
| GB1411378A (en) * | 1971-12-07 | 1975-10-22 | Leesona Plastics Machinery Ltd | Plant to reclaim thermoplastic scrap material |
| DE2416573A1 (en) * | 1974-04-05 | 1975-10-30 | Buckau Wolf Maschf R | Regenerating synthetic plastic waste from textile industry - by washing centrifugal drying rinsing and drying in batches |
Non-Patent Citations (3)
| Title |
|---|
| PLASTIQUES ELASTOMERES, volume 31, no. 4, mai 1979, "Régénération: pour chaque cas un matériel spécifique", pages 67-70 * |
| PLASTVERARBEITER * |
| PLASTVERARBEITER, volume 31, mai 1980, no. 5, (SPEYER AM RHEIN, DE) H. TENNER "Aufbereitung von thermoplastischen Abf{llen }ber die Schmelze", pages 252-258 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4122277A1 (en) * | 1991-07-05 | 1993-01-07 | Nordenia Verpackung | METHOD FOR TREATING USED OBJECTS FROM POLYOLEFIN TO REUSABLE RAW MATERIAL |
| ITPD20110166A1 (en) * | 2011-05-24 | 2012-11-25 | Ergomec Srl | PLASTIC RECOVERY MATERIAL MANAGEMENT SYSTEM |
| GB2604599A (en) * | 2021-03-05 | 2022-09-14 | Loowatt Ltd | A waste processing apparatus |
| GB2604599B (en) * | 2021-03-05 | 2023-08-16 | Loowatt Ltd | A waste processing apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |