WO2004029139A1 - Procede de separation et de recuperation d'une resine polystyrene sous la forme d'un gel contracte - Google Patents

Procede de separation et de recuperation d'une resine polystyrene sous la forme d'un gel contracte Download PDF

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Publication number
WO2004029139A1
WO2004029139A1 PCT/JP2002/010097 JP0210097W WO2004029139A1 WO 2004029139 A1 WO2004029139 A1 WO 2004029139A1 JP 0210097 W JP0210097 W JP 0210097W WO 2004029139 A1 WO2004029139 A1 WO 2004029139A1
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WO
WIPO (PCT)
Prior art keywords
polystyrene resin
volume
gel
reduced
solvent
Prior art date
Application number
PCT/JP2002/010097
Other languages
English (en)
Japanese (ja)
Inventor
Shigenobu Hamano
Noriomi Hayashi
Original Assignee
Meishin Kogyo Kabushikigaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Meishin Kogyo Kabushikigaisha filed Critical Meishin Kogyo Kabushikigaisha
Priority to AU2002332343A priority Critical patent/AU2002332343A1/en
Priority to PCT/JP2002/010097 priority patent/WO2004029139A1/fr
Publication of WO2004029139A1 publication Critical patent/WO2004029139A1/fr

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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
    • 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
    • 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
    • B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
    • 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

Definitions

  • the present invention relates to a technique for recovering a liquid (solvent) and a resin from a volume-reduced gel polystyrene resin, and more particularly to a method for continuously separating and recovering a solvent and a resin from a volume-reduced gel polystyrene resin.
  • the method of separating the volume-reduced gel polystyrene resin into a resin and a solvent includes a method of evaporating and separating the solvent of the volume-reduced gel polystyrene resin, and a method of compressing and separating the volume-reduced gel polystyrene resin.
  • a small amount of solvent remains in the resin, and the remaining solvent may be evaporated if necessary.
  • volume-reduced gel-like polystyrene resins vary widely from hard solids to gel-like resins, and there is a method to separate this into a solvent and a resin by continuous treatment. Attempts to do so are practically very difficult and have not yet reached operational levels.
  • Japanese Patent Application Laid-Open No. 2001-181439 discloses a dissolving tank for preparing a dissolving solution by adding a solvent to a gel obtained by dissolving polystyrene in a solvent, and filtering the dissolving solution.
  • a polystyrene recovery device comprising a filter, a concentrator for evaporating the solvent from the dissolved solution passing through the filter to produce a concentrated solution having a predetermined concentration, and a separator for evaporating and separating the solvent from the concentrated solution and extracting polystyrene. Proposed.
  • the concentration is adjusted by sequentially putting the collected volume-reduced gel-like polystyrene resin into the dissolving tank, so a large-scale equipment called a dissolving tank with a stirrer is required at this stage, which imposes a burden on the equipment. large.
  • a solvent is prepared by further adding a solvent to the volume-reduced gel-like polystyrene resin, a very large amount of the solvent is used, resulting in a very low efficiency.
  • an object of the present invention is to provide a method for continuously and efficiently treating a reduced volume gel-like polystyrene resin to separate and recover a solvent and a resin. I do.
  • the recovered volume-reduced gelled polystyrene resin is kept in a collection container without exceeding the flash point of a solvent contained in the volume-reduced gelled polystyrene resin.
  • a volume reduction characterized by comprising a filtration step of filtering, and a filtration step of reducing the volume of the filtered polystyrene resin by introducing the polystyrene resin into a separation / recovery device and evaporating and recovering the solvent to separate the resin.
  • the recovered volume-reduced gel-like polystyrene resin can be transferred to the filtration step by a simple method of improving the fluidity by simply heating without providing a large-scale facility.
  • a three-dimensional filter consisting of at least two layers in the process, foreign substances can be easily removed from the reduced volume gel-like polystyrene resin with improved fluidity, and no solvent is added after recovery. Can be processed.
  • the filter used in the filtration step is heated to an extent not exceeding the flash point of the solvent contained in the volume-reduced gel polystyrene resin to be filtered.
  • a method for separating and recovering a reduced volume gel-like polystyrene resin is provided.
  • the separation treatment can be performed smoothly by heating the reduced volume gel-like polystyrene resin in the filtration step.
  • the filter used in the filtration step is a three-dimensional filter comprising at least two layers of filters arranged such that lattice meshes intersect each other.
  • a filter having a three-dimensional structure by arranging lattice-shaped meshes so as to intersect each other, foreign substances can be effectively removed with a large mesh.
  • the at least two-layer filter A method for separating and collecting a volume-reduced gel polystyrene resin, characterized in that at least one filter having a smaller mesh than these filters is provided below the filter.
  • a small-mesh filter is arranged below the large-mesh mesh filter, so that even small foreign substances can be effectively removed finally.
  • each of the filters is supported by a heat medium flow pipe for heating the filter.
  • a heat medium flow pipe for heating the filter.
  • each filter is heated by the heat medium flowing through the heat medium flow tube, and can perform efficient filtration.
  • heating is performed while leveling the temperature of the volume-reduced gel-like polystyrene resin in the collection container.
  • a method for separating and collecting a volume-reduced gel polystyrene resin wherein the heating is performed while the temperature of the volume-reduced gel polystyrene resin in the collection container is equalized. It is possible to partially prevent the flash point of the solvent from exceeding the flash point, and to improve the flowability of the volume-reduced gel polystyrene resin safely and effectively.
  • FIG. 1 is a diagram conceptually showing a method for separating and recovering a volume-reduced gel polystyrene resin according to an embodiment of the present invention.
  • FIG. 2 is a schematic perspective view and a sectional view of a heating device used in a fluidization step according to one embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a filtration device used in a filtration step according to one embodiment of the present invention.
  • FIG. 4 is a plan view showing a filter used in the filtration device according to one embodiment of the present invention.
  • FIG. 5 is a sectional view of a main part of a separation and recovery apparatus used in a separation step according to one embodiment of the present invention.
  • FIG. 6 is a sectional view of a main part of a separation and recovery apparatus used in a separation step according to one embodiment of the present invention.
  • FIG. 1 conceptually shows a method of separating and recovering a volume-reduced gel polystyrene resin according to one embodiment.
  • the method for separating and recovering a reduced volume polystyrene resin of the present invention improves the fluidity of the recovered reduced volume polystyrene resin by heating it with a heating device 10.
  • a fluidization step; a filtration step of filtering the volume-reduced gel polystyrene resin having improved flowability with a filtration device 20 to remove foreign matter; and a separation / recovery device of the filtered volume-reduced gel polystyrene resin 3 A separation step of separating the resin by introducing the solvent into the solvent and evaporating and recovering the solvent.
  • the volume-reduced gel polystyrene resin is collected in a state packed in a collection container 1 such as a drum.
  • the volume-reduced gel polystyrene resin used here is a method of treating resin waste, such as polystyrene resin or expanded polystyrene resin waste, that has a larger apparent volume than the actual volume of the resin component. It is gelled by contact, and the type is not particularly limited.
  • the flash point is about 40 to 100 ° C. and the ignition point is 180 to 350 ° C. It is assumed that polystyrene resin or foamed polystyrene resin waste material is treated with a solvent of about C.
  • the original use of the volume-reduced polystyrene resin or expanded polystyrene resin waste is not particularly limited. That is, resin waste for various uses such as food trays is collected from civil engineering construction materials without any restrictions.
  • the amount of resin waste material treated with respect to a predetermined amount of solvent is not particularly limited, and includes a range from a material having relatively fluidity to a material solidified by treating resin waste material which is close to the treatment limit. can do.
  • the flowability of the volume-reduced gel polystyrene resin is improved in the collection container during the fluidization process.
  • the recovery container 1 in which the volume-reduced gel-like polystyrene resin is sealed is installed in the heating device 10 to reduce the volume of the gel-like polystyrene resin.
  • Improve advocacy is provided.
  • the heating device 10 is a hot water bath heated to a predetermined temperature, for example, 30 to 100 ° C., preferably around 30 to 85 ° C., for example, filled in a water tank 11
  • a predetermined temperature for example, 30 to 100 ° C., preferably around 30 to 85 ° C., for example, filled in a water tank 11
  • a heat medium flow pipe 12 By circulating a heat medium flow pipe 12 in the heated water and circulating a heat medium such as steam through the heat medium flow pipe 12, the water in the water tank 11 is heated to a predetermined temperature.
  • a support member 13 for mounting the collection container 1 is provided at the bottom of the water tank 11.
  • the heating temperature of the volume-reduced gel polystyrene resin by the heating device 10 may be lower than the flash point of the solvent, but is desirably 5 ° C. or lower than the flash point.
  • the heating device 10 can safely heat at a temperature lower than the flash point of the solvent. In other words, if a hot water bath is used, it can be heated at a temperature below the flash point without very strict temperature control, depending on the type of solvent.
  • the solvent used for reducing the volume of the resin is, for example, one having a flash point of about 40 ° C. to 100 ° C. and a flash point of about 180 ° C. to 350 ° C. Is used.
  • the collection container 1 holding the reduced volume gel-like polystyrene resin is stored at 30 ° C. to 100 ° C., preferably 30 ° C. to 50 ° C. C. for 1-2 hours. As a result, the flowability of the reduced-volume gel-like polystyrene resin is greatly improved in the collection container 1, and a state in which the processing in the next step, ie, the pass step, can be performed.
  • the heating device 10 may be provided with a leveling means for rotating and vibrating the recovery container 1 to avoid a partial temperature rise of the reduced volume gel-like polystyrene resin. Good. Thereby, it is possible to heat the volume-reduced gel-like polystyrene resin in the collection container 1 while leveling the temperature, and to prevent a partial temperature rise.
  • the volume-contained gel-like polystyrene in the collection container 1 is simply stored in the collection container 1 as it is, and then charged together with warm water in a heating device 10 at least one size larger than the collection container 1.
  • the fluidity of the resin can be improved, It is only necessary to open the container 1 and pour it into the filtration process as it is.
  • the filtration device 20 used in the filtration step includes a plurality of filters, for example, a first filter 22 and a second filter 22 in the tubular device main body 21 in the present embodiment.
  • the filter is fixed so as to have a three-dimensional structure including three layers of the filter 23 and the third filter 24.
  • each of these filters 22, 23, 24 is supported by each heat medium flow pipe 25 arranged in three layers in the apparatus main body 21. That is, each heat medium flow pipe 25 is provided so as to meander inside the apparatus main body 21, and each filter 22, 23, 24 is fixed on this heat medium flow pipe 25. .
  • a heating medium such as, for example, heating oil or steam is circulated in the heating medium flow pipe 25, and the surface thereof is always kept at a temperature of about 30 to 100 ° C. . Therefore, the filters 22, 23, 24 fixed on the heat medium flow pipe 25 are always kept at a temperature of about 30 to 100 ° C.
  • the first and second filters 22 and 23 are, for example, relatively coarse grid-like filters of about 1 to 5 meshes, and these first and second filters 22 and 23 are used. Are arranged in such a way that the grid meshes cross each other. That is, as shown in FIG. 4, the first and second filters 22 and 23 are arranged such that the second filter 23 exists in the area corresponding to the eyes of the first filter 22. It has been done. As a result, the first and second filters 22 and 23 can effectively remove relatively large foreign matters, and are substantially finer than the filters 22 and 23 themselves. The same effect as filtering with a mesh can be obtained, but there is an effect that clogging is less likely to occur than when filtering with a fine mesh filter.
  • the third filter 24 is a filter finer than the first and second filters 22 and 23, for example, a lattice filter of about 10 mesh. The direction in which the third filter 24 is arranged is not particularly limited.
  • the first filter 22 included in the reduced volume gel-like polystyrene resin has a larger diameter. Foreign matter larger than the size of is first trapped by the first filter 22. And the size of the first filter 2 is equal to the size of the second eye Foreign substances of a smaller size are trapped by the first filter 22, while others are passed. However, since the second filter 23 is present in the area corresponding to the eyes of the first filter 22 as described above, most of the foreign matter that has passed through the first filter 22 is Trapped by filter 23.
  • the relatively fine foreign matter contained in the volume-reduced gel-like polystyrene resin also passes through the second finoleta 23, but the third mesh 2, which has relatively fine eyes, is located below the second filter 23. Due to the arrangement of 4, the relatively small foreign matter is also trapped by the third filter 24, and the foreign matter contained in the reduced volume gel-like polystyrene resin is almost completely removed.
  • the first and second filters 22 and 23 are formed. By means of 22 and 23, even relatively small foreign substances can be removed. Further, since the first and second filters 22 and 23 themselves have relatively coarse meshes, the occurrence rate of clogging of these filters 22 and 23 is significantly reduced.
  • a relatively fine 3 'filter 24 is arranged below the first and second filters 22 and 23, so that the third filter is arranged.
  • the filter 24 almost completely traps foreign substances contained in the reduced volume polystyrene resin. Since relatively fine foreign substances are trapped by the first and second filters 22 and 23, the rate of clogging of the third filter 24 is significantly reduced.
  • the volume-reduced gel-like polystyrene resin is When passing through the filters 22, 23, 24, they are heated by contacting these finoleta 22, 23, 24, or the heat medium flow pipe 25, and the viscosity does not increase. As a result, only the foreign substances contained in the reduced volume polystyrene resin are trapped by the filters 22, 23, and 24, and the reduced volume polystyrene resin itself passes well. That is, it is possible to prevent the volume-reduced gel polystyrene resin from adhering to each filter. 23, 24 can be prevented from being clogged.
  • three filters are arranged in the apparatus main body.
  • the number of filters is not particularly limited, and may be four or more, or of course, two. ,
  • the volume-reduced gel-like polystyrene resin from which the foreign substances have been almost completely removed by the plurality of filters 22, 23, 24 is placed in a storage tank 26 arranged below the apparatus main body 21. It will be stored and ready for processing in the next separation step.
  • the filtered volume-reduced gel polystyrene resin is introduced into the separation and recovery device, and the separation step is performed. That is, as shown in FIG. 5 and FIG. 6, the volume-reduced gel-like polystyrene resin is introduced into the separation and recovery device 30, and the solvent is separated by evaporation and recovery. Then, the resin is formed into a rod-shaped member having a predetermined diameter, and the solvent is liquefied and collected.
  • a volume-reduced gel-like polystyrene resin which has been preheated to about 150 ° C. by a preheater 100, is introduced into the apparatus through an inlet pipe 32. Introduced into body 3 1.
  • the inside of the apparatus main body 31 is sucked through a waste pipe (not shown) connected to the solvent recovery section 33 and is always in a reduced pressure state.
  • components having a low boiling point are immediately vaporized in the apparatus main body 31 in a reduced pressure state, and are recovered from the solvent recovery section 33.
  • the preheating is performed by the preheater 100 so that the low boiling components in the solvent are removed immediately after introduction.
  • the preheater 100 is not operated.
  • the preheater 100 is not always required to be provided, and the volume-reduced gel-like polystyrene resin in a state of flowing to some extent may be directly introduced into the introduction pipe 14.
  • the preheater 100 is, for example, a multi-stage heat exchanger, and has a heat medium inlet 101 and a heat medium outlet 102 into which a heat medium such as steam flows.
  • the volume-reduced gel polystyrene resin introduced from the raw material inlet 104 is preheated, and the preheated volume-reduced gel polystyrene resin is discharged from the raw material outlet 104. Then, when the volume-reduced gel-like polystyrene resin 50 is introduced into the substantially cylindrical device main body 31 through the introduction pipe 32, the volume-reduced gel-like polystyrene resin 50 becomes a stirring rod 34. Flows into the concave portion 36 of the gutter-like member 35 fixed to the bottom.
  • the concave part 36 of the gutter-like member 35 has a volume-reduced gel-like polystyrene resin 50 substantially uniformly distributed over the entire circumference. Flows in.
  • the reduced volume gel-like polystyrene resin 50 is stored on the concave portion 36, the reduced volume gel-like polystyrene resin 50 is removed from the concave portion 36. It overflows 36 and flows down onto the heat medium flow pipe 20. That is, since the outer wall 38 of the recess 36 is formed lower than the inner wall 39, the volume-reduced gel-like polystyrene resin 50 overflowing from the recess 36 is formed from the outside of the gutter member 37. It flows along the outer surface of the cylindrical member 35 and flows down from the bottom onto the uppermost heat medium flow pipe 37. '
  • the volume-reduced gel-like polystyrene resin 50 that has flowed down from the uppermost heat medium flow pipe 37 has its flow controlled by a flow control member 42 composed of two plate-like members 40 and 41. Then, it flows down sequentially on the lower heat medium flow pipe 37.
  • a heat medium made of a heating oil is introduced into the heat medium flow pipe 37, and the outer surface of the heat medium flow pipe 37 is maintained at about 180 ° C. Therefore, the volume-reduced gel-like polystyrene resin 50 that has flowed down onto the heat medium flow pipe 37 is heated and removed by evaporating a part of the solvent.
  • the volume-reduced gel-like polystyrene resin 50 is repeatedly heated a plurality of times, and most of the solvent is vaporized. Removed. That is, by flowing down along the heat medium flow pipe 37, the volume-reduced gel-like polystyrene resin 50 becomes a resin from which the solvent has been substantially removed.
  • the vaporized solvent is discharged to the outside from a solvent recovery section 33 provided at the upper part of the apparatus main body 31.
  • a solvent recovery section 33 provided at the upper part of the apparatus main body 31.
  • the vaporized solvent is sequentially discharged from the solvent recovery section 33. Is discharged.
  • emissions The solvent is liquefied by a condenser and collected in a collection tank.
  • the inside of the device main body 3.1 does not necessarily need to be under reduced pressure. Then, as shown in FIG.
  • the resin 60 from which the solvent has been removed by being heated a plurality of times by the heat medium flow pipe 37 flows down from the heat medium flow pipe 37 A at the lowermost layer. It flows along the inner surface of the apparatus main body 31 via the control member 42A and flows into the resin holding section 43 at the lower part of the apparatus main body 31.
  • a heating medium circulating means 44 as a heating means is provided from the lower part of the apparatus main body 31, that is, from the vicinity of the flow control member 42 A to a region corresponding to the resin holding section 43.
  • the wall surface of the main body 31 is maintained at, for example, about 230 ° C. Therefore, the resin 60 that has flowed down from the flow control member 42A to the wall of the device body 31 is further heated and has a reduced viscosity to ensure fluidity. Satisfactorily flows into the resin holding portion 43 through the resin.
  • the resin 60 flowing into and held by the resin holding section 43 is rotated by the stirring rod 34 and the second stirring rod 45 connected to the tip of the stirring rod 34, thereby causing the stirring rod 34 and the stirring rod 34 to rotate.
  • the mixture is stirred by the protrusion 46 provided on the second stirring rod 45.
  • the heating medium is sufficiently heated by the heating medium circulation path 47 provided at the center of the heating medium circulation means 44 and the resin holding section 43.
  • the solvent remaining in the resin 60 is completely vaporized and the air (bubbles) contained therein is also removed, and the resin 60 in the resin holding portion 43 is almost completely free of the solvent and bubbles. It will be in the removed state.
  • the resin 60 held in the resin holding section 43 is transferred to the resin recovery section 48 by, for example, suction means (not shown) such as a gear pump for transferring molten plastic. While continuously being guided by the projections 46 of the stirring rod 45, the resin continuously flows into the resin recovery section 48.
  • suction means such as a gear pump for transferring molten plastic.
  • the resin that has flowed into the resin recovery section 48 is sent to an extruder (not shown) and is formed into a rod-shaped member having a predetermined diameter.
  • the volume reduction is achieved by improving the fluidity of the recovered volume-reduced gel-like polystyrene resin as it is and by efficiently filtering foreign substances.
  • the gel and polystyrene resin can be treated continuously and efficiently to separate and recover the resin and solvent, without using a large amount of solvent and equipped with a heating and stirring device as in the past. The effect is that continuous and efficient processing can be performed without installing a large dissolution tank.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

L'invention concerne un procédé de traitement en continu et efficace d'une résine polystyrène sous la forme d'un gel contracté permettant de séparer et de récupérer le solvant et la résine. Le procédé comprend : une étape de fluidisation dans laquelle une résine polystyrène sous la forme d'un gel contracté est chauffée, sans être retirée du récipient de récupération, approximativement à une température pas supérieure au point d'inflammation du solvant renfermé dans la résine polystyrène sous la forme d'un gel contracté, de manière à améliorer la capacité d'écoulement ; une étape de filtration dans laquelle la résine polystyrène sous la forme d'un gel contracté possédant une capacité d'écoulement améliorée est filtrée au moyen d'un filtre (20) comprenant au moins deux couches de milieu filtrant possédant une forme de mailles différente et étant disposées à une distance donnée ; ainsi qu'une étape de séparation dans laquelle la résine polystyrène sous la forme d'un gel contracté filtrée est introduite dans un appareil de séparation/récupération (30) aux fins d'évaporation et récupération du solvant, permettant ainsi de séparer celui-ci de la résine.
PCT/JP2002/010097 2002-09-27 2002-09-27 Procede de separation et de recuperation d'une resine polystyrene sous la forme d'un gel contracte WO2004029139A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2002332343A AU2002332343A1 (en) 2002-09-27 2002-09-27 Method of separating and recovering polystyrene resin in contracted gel form
PCT/JP2002/010097 WO2004029139A1 (fr) 2002-09-27 2002-09-27 Procede de separation et de recuperation d'une resine polystyrene sous la forme d'un gel contracte

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2002/010097 WO2004029139A1 (fr) 2002-09-27 2002-09-27 Procede de separation et de recuperation d'une resine polystyrene sous la forme d'un gel contracte

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WO2004029139A1 true WO2004029139A1 (fr) 2004-04-08

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WO (1) WO2004029139A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1550676A1 (fr) * 2002-09-27 2005-07-06 Shigenobu Hamano Dispositif de separation et de recuperation d'un gel de resine de polystyrene concentre
JP2010521217A (ja) * 2007-03-14 2010-06-24 エス アンド ジ バイオテク， インコーポレイテッド 内腔拡張用ステント

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107379319B (zh) * 2017-08-14 2023-09-08 桂林澳群核径迹有限责任公司 用于热收缩膜生产的除杂装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0724227A (ja) * 1993-07-09 1995-01-27 Nippon Kanaami Shoko Kk 金網製積層フィルター
JP2000044724A (ja) * 1998-05-27 2000-02-15 Stylo Japan:Kk プラスチックの溶剤、及びプラスチックの回収方法
JP2001164035A (ja) * 1999-12-09 2001-06-19 Amusu:Kk 発泡ポリスチレンの再生処理方法及びこの方法に用いられる不純物除去装置
US6270330B1 (en) * 2000-07-06 2001-08-07 Shao-Szu Cheng Waste foamed polystyrene material reclaiming system
JP2001342288A (ja) * 2000-06-02 2001-12-11 Aasuingu:Kk 熱可塑性樹脂の再生方法およびその方法に使用される装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0724227A (ja) * 1993-07-09 1995-01-27 Nippon Kanaami Shoko Kk 金網製積層フィルター
JP2000044724A (ja) * 1998-05-27 2000-02-15 Stylo Japan:Kk プラスチックの溶剤、及びプラスチックの回収方法
JP2001164035A (ja) * 1999-12-09 2001-06-19 Amusu:Kk 発泡ポリスチレンの再生処理方法及びこの方法に用いられる不純物除去装置
JP2001342288A (ja) * 2000-06-02 2001-12-11 Aasuingu:Kk 熱可塑性樹脂の再生方法およびその方法に使用される装置
US6270330B1 (en) * 2000-07-06 2001-08-07 Shao-Szu Cheng Waste foamed polystyrene material reclaiming system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1550676A1 (fr) * 2002-09-27 2005-07-06 Shigenobu Hamano Dispositif de separation et de recuperation d'un gel de resine de polystyrene concentre
EP1550676A4 (fr) * 2002-09-27 2010-01-13 Shigenobu Hamano Dispositif de separation et de recuperation d'un gel de resine de polystyrene concentre
JP2010521217A (ja) * 2007-03-14 2010-06-24 エス アンド ジ バイオテク， インコーポレイテッド 内腔拡張用ステント

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