EP3027329A1 - Procede et installation automatique pour la caracterisation et/ou le tri d'emballages - Google Patents
Procede et installation automatique pour la caracterisation et/ou le tri d'emballagesInfo
- Publication number
- EP3027329A1 EP3027329A1 EP14750587.9A EP14750587A EP3027329A1 EP 3027329 A1 EP3027329 A1 EP 3027329A1 EP 14750587 A EP14750587 A EP 14750587A EP 3027329 A1 EP3027329 A1 EP 3027329A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- packages
- multilayer
- liquid
- water
- sorting
- 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
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000010410 layer Substances 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000001514 detection method Methods 0.000 claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 239000002356 single layer Substances 0.000 claims abstract description 17
- 239000012530 fluid Substances 0.000 claims abstract description 11
- 238000004806 packaging method and process Methods 0.000 claims description 30
- 238000005406 washing Methods 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 11
- 238000012512 characterization method Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 5
- 208000034693 Laceration Diseases 0.000 claims description 4
- 210000003722 extracellular fluid Anatomy 0.000 claims description 4
- 238000004497 NIR spectroscopy Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 12
- 239000005020 polyethylene terephthalate Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 9
- 230000003287 optical effect Effects 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000004677 Nylon Substances 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- 238000004383 yellowing Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004069 differentiation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 229920006121 Polyxylylene adipamide Polymers 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000004611 spectroscopical analysis Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004566 IR spectroscopy Methods 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 235000021149 fatty food Nutrition 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010794 food waste Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005211 surface analysis Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/3404—Sorting according to other particular properties according to properties of containers or receptacles, e.g. rigidity, leaks, fill-level
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/041—Cleaning travelling work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/044—Cleaning involving contact with liquid using agitated containers in which the liquid and articles or material are placed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
Definitions
- the present invention relates to a method and system for the characterization and / or sorting of containers and / or monolayer and multilayer packaging.
- the products consisting of different resins have different spectra, which allow to recognize reliably regardless of their physical appearance.
- Products with a thicker upper layer result in longer optical paths for the backscattered rays, so that these differences in thickness can be partially detected.
- the barrier can be aimed at impermeability to oxygen, carbon dioxide, or to other gases.
- a barrier is then made in a nylon-type polymer (for example polyamide MxD6), but this polymer is not a good constituent to form the entire package alone (especially because it is not transparent in strong form). thicknesses).
- One solution is then to use a three-layer packaging, with the outer and inner layers made of PET (polyethylene terephthalate), as for the other beverage bottles, and the central layer MxD6.
- the central layer is thin (approximately 10 ⁇ ), and the two PET layers are thicker (100 to 200 ⁇ each).
- the yellowing can also come from the dirty water introduced during the washing phase (after evaporation, there remains the yellowed dirt between the layers).
- these monolayer and multilayer packaging can be covered with a sleeve acting as a label, on a part or all their height, as well as single-layer bottles found in the same flows.
- the first step of the regeneration is therefore to pass them in a machine to remove the sleeves, or "label grater” (also known as “bottle stripper” - bottle stripper).
- label grater also known as “bottle stripper” - bottle stripper.
- the principle of operation of these machines is to lacerate for several minutes the outer face of the bottles to tear and drop the sleeves. During this operation, the surface of the bottles is damaged (cuts, slots, punctures) with piercing of the wall, partially or totally. Corks and neck collars are often destroyed.
- the object of the invention is to provide a more reliable and more repetitive solution for automatically recognizing specifically the multilayer containers or packages, in a scrolling flow containing mixed monolayer or multilayer containers or packages, of similar materials. or different.
- the proposed solution should be able to integrate without any significant change in the method and system of characterization and sorting known, in particular by the document EP 1 243 350 supra, and keeping if possible the same measurement technology and detection .
- the invention should require no additional material means for its implementation on existing sorting / characterization systems, in particular those using conventional near-infrared spectroscopy for the detection of the chemical signatures of the materials constituting containers or packaging scrolling.
- the subject of the invention is an automatic process for characterizing and / or sorting packages, in particular containers of the bottle or like type, moving in a substantially planar flow and substantially without overlapping or overlapping (the) said stream comprising monolayer and multilayer packages,
- a liquid fluid in particular water or a liquid based on water
- a non-contact detection system exploits the resulting information to perform characterization and / or sorting between the two types of packaging.
- the invention also relates to an automatic installation for characterizing and / or sorting packagings for implementing the method described above comprising at least one label rasp, a washing station, a non-contact detection system. , as well as a means ensuring a flat scroll (that is to say substantially on a single layer) of said packages at the level of the detection zone,
- installation characterized in that it also comprises a means using the informative signals provided by the detection system to discriminate monolayer packaging against multilayer packaging, based on the information relating to the presence or absence of interstitial fluid.
- FIG. 1 is a block diagram illustrating the main stations of an installation for implementing the method according to one embodiment of the invention (each block of the block diagram corresponding to both a station and an operating stage );
- FIGS. 2A and 2B are partial sectional views of the walls of multilayer bottles and monolayer in the dry state and with their labels, and
- Figures 3A and 3B are partial sectional views similar to those of Figures 2A and 2B of the same bottle walls during their inspection by the detection system, after being subjected to the rasp and washed.
- the invention relates firstly to an automatic method for characterizing and / or sorting packages, in particular bottle-type containers or the like, moving in a substantially planar flow and substantially without overlap or mutual overlap (1c), said flow comprising monolayer and multilayer packaging.
- the method consists in introducing a liquid fluid 2, in particular water or a liquid based on water, between the layers ⁇ , 1 "not integral multilayer packaging, to detect the presence of the interstitial liquid fluid 2 in the multilayer packaging by a system 13 of non-contact detection and exploit the resulting information to perform the characterization and / or sorting between both types of packaging 1.
- a liquid fluid in particular water or a liquid based on water
- the introduction of a liquid fluid 2 based on water between the layers ⁇ , 1 "multilayer packaging 1 is carried out during a preliminary washing operation of all the packages to be characterized and / or sort.
- the washing phase (or the water-like introduction phase between the disjunct layers of the multilayer walls) is followed by a dewatering phase, preferably controlled, before the detection phase, and possibly an active drying phase on the surface.
- the invention provides for an appropriate preparatory treatment.
- liquid fluid 2 all of the packages or containers 1 is subjected to a laceration or piercing operation of the walls 3 of said packages 1, so as to create slots or similar through cuts 4 in the walls.
- the operation of laceration or piercing of the walls of the packages is carried out by a label rasp 9.
- the invention takes advantage of two existing steps of the treatment of the containers 1 and adds no additional step for the preparation of the containers 1 for discrimination between monolayer and multilayer.
- the non-contact detection system can use, for example:
- the present invention makes use of a significant physical property of multilayer bottles 1, and more generally many multilayer packaging: as the layers ⁇ , 1 "do not adhere to each other, they are fill with water during the washing (generally stay several minutes in almost boiling water), and all the more easily as the prior passage of the bottles in the label grater 9 has created slots 4 multiple at least to the surface (outer layers) of the walls of these bottles.
- the near-infrared signature of the water is particularly strong (as for X-rays or microwave waves of suitable wavelength): under these conditions, therefore, a combination of PET and water is detected if, and only if, the bottle is multilayered. The result is of course applicable to other polymers than PET.
- the drying has time to act only on the upper layer ⁇ , and not between the layers.
- the invention even allows to sort dry bottles surface but wet internally only if they are multilayer.
- the invention also relates to an automatic installation 6 for characterizing and / or sorting packagings for implementing the method described above comprising at least one label rasp 9, a washing station 8, 10, a control system non-contact detection 13, and a means 1 1 ensuring a monolayer scroll of said packages 1 at the detection zone.
- This installation 6 is characterized in that it also comprises a means exploiting the informative signals provided by the detection system 13 for discriminating the monolayer packagings 1 with respect to the multilayer packagings, on the basis of the information relating to the presence or no interstitial fluid 2.
- FIG. 1 represents in the form of a block diagram the main steps or stations of a unit or installation of regeneration and sorting 6 organized according to the principle of the invention, optimized for bottles 1 containing a large proportion of plastic sleeves 5.
- the products 1 arrive in bales from packaging sorting centers, and are unpacked and arrive at the loading station 7 on the line: they are loaded for example via a worm.
- station 8 with cold water. This step is intended to rid them of paper labels and surface contaminations: soil, sticky or fatty food residues. They then pass into the label grater 9 which removes 90 to 95% of the sleeves 5.
- This rasp is generally made of a hollow drum of
- the next step is hot washing (station 10), at 95 ° C and with detergent, generally strongly basic.
- the purpose is this time to thoroughly wash the inside of the bottles, and to remove the remains of glue on the surface.
- This is still a drum filled with hot water in which the bottles turn and stay for several minutes.
- Multilayer bottles fill with water between the different layers ⁇ , 1 ".
- the bottles are then taken up by a conveyor system 1 1 whose role is to empty them of their water content and drain them on the surface. Usually over 97%, they are completely emptied. On the other hand, the water contained between the layers adheres well by capillarity and does not evacuate or very little.
- a drying step (station 12) can be added after the dripping and on the sorting belt 11.
- This uses industrial radiants that provide a brief thermal flash on the surface of the bottles, and which can be associated with fans. This makes it possible to have bottles that are almost dry on the surface, at least for the upper or the outer face.
- the products to be inspected are accelerated on the conveyor of an automatic detection and sorting system, at speeds of the order of 3 m / s, before reaching the optical sorting line proper.
- it contains one or more machines or cascade sorting systems, each of which eliminates defects or contaminants by blowing them out of the main line, for example downwards at the end of sorting conveyor.
- the reject outlet (station 14) then contains the material contaminants (all the bottles that are not made of the desired polymer), and in particular the multilayers, which are made of several different materials.
- non-ejected products contains bottles of pure and often colorless material. They will then undergo grinding to be reduced into flakes, then possibly other chemical steps before finishing in the form of granules capable of constituting new products, including new bottles. This last process is named in English BTB ("Bottle to Bottle” - “Bottle to Bottle” bottle “), and constitutes the recycling process of the highest level of quality.
- a first sort upstream of the packaging flow could be carried out to supply the installation 6 in packaging 1 that can be discriminated by it.
- FIGS. 2A and 2B respectively show a portion of multilayer wall and a portion of dry single-wall wall.
- the monolayer one can have a layer of PET 200 to 350 ⁇ thick.
- the multilayer it is possible to have an outer layer of 150 to 200 ⁇ (for example PET), a nylon intermediate layer of 10 ⁇ , and an inner layer of 100 to 150 ⁇ (for example PET).
- Figures 3A and 3B show the same wet products. Droplets of water are randomly scattered on the surface of the bottles, on the outside or inside. However, the polymers being generally hydrophobic, the water does not wet them, and concentrates in the form of drops isolated on the surface. Through a drop, as soon as the thickness of the drop reaches 1 mm or more, almost the entire signal is absorbed. The drop zone thus contributes very little to the signal read by the optical detection system. Conversely, on both sides of these drops, the infra-red signal is almost identical to that of a dry product.
- the net signals received by the sensor of the detection system are respectively close to a dry product for the monolayer, and very influenced by the water for the multilayer, thus allowing a reliable discrimination on this criterion.
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1357657A FR3009212B1 (fr) | 2013-08-01 | 2013-08-01 | Procede et installation automatique pour la caracterisation et/ou le tri d'emballages |
| PCT/FR2014/051949 WO2015015105A1 (fr) | 2013-08-01 | 2014-07-28 | Procede et installation automatique pour la caracterisation et/ou le tri d'emballages |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3027329A1 true EP3027329A1 (fr) | 2016-06-08 |
| EP3027329B1 EP3027329B1 (fr) | 2017-07-05 |
Family
ID=49546566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14750587.9A Not-in-force EP3027329B1 (fr) | 2013-08-01 | 2014-07-28 | Procede et installation automatique pour la caracterisation et/ou le tri d'emballages |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20160158806A1 (fr) |
| EP (1) | EP3027329B1 (fr) |
| JP (1) | JP2016532106A (fr) |
| CA (1) | CA2919956A1 (fr) |
| ES (1) | ES2639474T3 (fr) |
| FR (1) | FR3009212B1 (fr) |
| WO (1) | WO2015015105A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10478863B2 (en) * | 2017-06-27 | 2019-11-19 | Key Technology, Inc. | Method and apparatus for sorting |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3023211A1 (de) * | 1979-06-28 | 1981-01-22 | Ti Fords Ltd | Verfahren und vorrichtung zur ermittlung einer waesserigen fluessigkeit in flaschen und behaeltern |
| DE4239479A1 (de) * | 1992-11-21 | 1994-05-26 | Hannover Laser Zentrum | Verfahren zum Erkennen und Sortieren von verschiedenen Kunststoffen |
| DE19710098A1 (de) * | 1997-03-12 | 1998-09-17 | Paul Stehning Gmbh | Verfahren zur Erzeugung von PET-Recyclat aus Flakes, sowie nach dem Verfahren erzeugtes PET-Produkt |
| FR2822235B1 (fr) * | 2001-03-19 | 2004-10-22 | Pellenc Sa | Dispositif et procede d'inspection automatique d'objets defilant en flux sensiblement monocouche |
| AU2003242308A1 (en) * | 2002-05-21 | 2003-12-02 | Kureha Chemical Industry Company, Limited | Bottle excellent in recyclability and method for recycling the bottle |
| JP4072715B2 (ja) * | 2002-09-24 | 2008-04-09 | 東洋製罐株式会社 | 多層プリフォームの検査方法およびその装置 |
| JP4379037B2 (ja) * | 2003-07-31 | 2009-12-09 | 東洋製罐株式会社 | 表面検査方法及び表面検査装置 |
| JP5550134B2 (ja) * | 2009-12-04 | 2014-07-16 | 大和製罐株式会社 | 赤外線を使用した容器のシール不良検査方法 |
-
2013
- 2013-08-01 FR FR1357657A patent/FR3009212B1/fr active Active
-
2014
- 2014-07-28 US US14/908,424 patent/US20160158806A1/en not_active Abandoned
- 2014-07-28 CA CA2919956A patent/CA2919956A1/fr active Pending
- 2014-07-28 JP JP2016530581A patent/JP2016532106A/ja not_active Ceased
- 2014-07-28 ES ES14750587.9T patent/ES2639474T3/es active Active
- 2014-07-28 EP EP14750587.9A patent/EP3027329B1/fr not_active Not-in-force
- 2014-07-28 WO PCT/FR2014/051949 patent/WO2015015105A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2015015105A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016532106A (ja) | 2016-10-13 |
| FR3009212B1 (fr) | 2015-07-31 |
| CA2919956A1 (fr) | 2015-02-05 |
| US20160158806A1 (en) | 2016-06-09 |
| WO2015015105A1 (fr) | 2015-02-05 |
| ES2639474T3 (es) | 2017-10-26 |
| FR3009212A1 (fr) | 2015-02-06 |
| EP3027329B1 (fr) | 2017-07-05 |
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