JP2011020298A - Method for recycling resin-made bumper - Google Patents

Method for recycling resin-made bumper Download PDF

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JP2011020298A
JP2011020298A JP2009165526A JP2009165526A JP2011020298A JP 2011020298 A JP2011020298 A JP 2011020298A JP 2009165526 A JP2009165526 A JP 2009165526A JP 2009165526 A JP2009165526 A JP 2009165526A JP 2011020298 A JP2011020298 A JP 2011020298A
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resin
resin material
screw extruder
bumper
pulverized
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Shigehito Kato
重日人 加藤
Hiroki Adachi
宏記 安達
Maiko Ichikawa
真以子 市川
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Toyota Motor Corp
Kojima Sangyo Co Ltd
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Toyota Motor Corp
Kojima Sangyo Co Ltd
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    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock
    • Y02P20/143—Feedstock the feedstock being recycled material, e.g. plastics
    • 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
    • Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
    • 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

<P>PROBLEM TO BE SOLVED: To enable mass production of a recycled resin material by processing resin-made bumpers continuously and smoothly from a coarsely crushed product of a resin-made bumper to a pelletized recycle resin material at a practical level. <P>SOLUTION: A method for recycling resin-made bumpers includes a crushing process B of crushing a coarsely crushed product of resin-made bumpers after removal of metal with a coating film left attached, a foreign matter sorting process C of removing foreign matter using a wind force sorting system and a water specific difference sorting system, processes of charging the crushed resin material into a biaxial extruder 22 and extruding the resin material into a thin string while melt-kneading and a cutting process D of cutting the string molding into pellets. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、廃車にされる自動車から取外された樹脂製バンパーによって実用レベルの樹脂材を再生するための方法に関する。   The present invention relates to a method for regenerating a resin material at a practical level with a resin bumper removed from an automobile to be scrapped.

この種の再生（リサイクル）については、例えば特許文献１に開示された技術が既に知られている。この技術では、ポリプロピレン（PP）系樹脂製バンパーの廃材に、PP系樹脂、ゴム、タルクを加えて溶融混練し、最終的にはペレット化された再生樹脂材を形成している。これにより、実用レベルの物性を備えた再生樹脂材が得られる。   For this type of regeneration (recycling), for example, the technique disclosed in Patent Document 1 is already known. In this technology, PP resin, rubber, and talc are added to a waste material of a polypropylene (PP) resin bumper and melt kneaded to finally form a pelletized recycled resin material. As a result, a recycled resin material having practical properties can be obtained.

特開平２００３−２６８１７５号公報Japanese Patent Laid-Open No. 2003-268175

しかしながら、一般的なリサイクル材はバージン材に比べて物性がわるく、その用途が限られるとともに、特に再生樹脂材を効率よく大量に生成するのは困難とされている。
具体的には、ペレット化された再生樹脂材を生成するには、押出し機によって細紐状に押出される成形品を次の切断工程へ連続して送り出す必要があるが、樹脂材に含まれている種々の異物が原因となって細紐状の成形品が途中で切れてしまう。このため、その都度加工ラインが止まり、加工効率が低下して再生樹脂材の大量生産を困難にしている。 However, general recycled materials have poor physical properties as compared with virgin materials, their uses are limited, and it is particularly difficult to efficiently produce a large amount of recycled resin materials.
Specifically, in order to produce a pelletized recycled resin material, it is necessary to continuously send out a molded product extruded into a thin string shape by an extruder to the next cutting step, which is included in the resin material. The thin string-like molded product is cut off halfway due to various foreign matters. For this reason, the processing line stops each time, and the processing efficiency is lowered, making it difficult to mass-produce recycled resin materials.

本発明は、このような課題を解決しようとするもので、その目的は、樹脂製バンパーの粗破砕品からペレット化された実用レベルの再生樹脂材までを連続してスムーズに加工して再生樹脂材の大量生産を可能とすることである。   The present invention is intended to solve such problems. The purpose of the present invention is to continuously and smoothly process a resin bumper from a roughly crushed product of a resin bumper to a pelletized recycled resin material so that the recycled resin is used. It is possible to mass-produce materials.

本発明は、上記の目的を達成するためのもので、以下のように構成されている。
第１の発明は、樹脂製バンパーの再生方法において、金属が除去された樹脂製バンパーの粗破砕品を、粉砕工程で塗膜が付いたままで粉砕した後、風力選別方式及び水比重差選別方式を用いた異物選別工程で異物を除去する。この粉砕樹脂材を二軸押出し機に投入して溶融混練しながら細紐状に押出し成形し、その成形品を切断工程で切断してペレット化する。 The present invention is for achieving the above object, and is configured as follows.
The first invention is a method for regenerating a resin bumper, in which a roughly crushed product of a resin bumper from which metal has been removed is pulverized with a coating film attached thereto in a pulverization step, and then a wind sorting method and a water specific gravity difference sorting method. Foreign matter is removed in the foreign matter sorting step using The pulverized resin material is put into a twin screw extruder and extruded and formed into a thin string shape while being melt kneaded, and the molded product is cut into a pellet by a cutting process.

このように、粉砕工程で粉砕され、かつ、異物選別工程で種々の異物が除去された粉砕樹脂材を二軸押出し機に投入して溶融混練することにより、粉砕樹脂材に付いている塗膜も樹脂材に練り込まれて均一な混練状態で押出し成形される。したがって、樹脂製バンパーから塗膜を剥がす工程を不要とし、実用レベルの樹脂材を効率よく再生できる。
また、二軸押出し機に投入される粉砕樹脂材は風力選別方式及び水比重差選別方式を用いた異物選別工程で種々の異物が除去されるため、樹脂製バンパーの粗破砕品からペレット化された再生樹脂材までを連続してスムーズに加工することができる。つまり、二軸押出し機に投入される粉砕樹脂材にバージン材を配合しなくても、この二軸押出し機によって細紐状に押出し成形される成形品が次工程に送られる途中で自然に切れる、といったライン停止の原因となる事態が解消され、加工効率を向上させることができる。 In this way, the coating film attached to the pulverized resin material is charged by melting and kneading the pulverized resin material, which has been pulverized in the pulverization step and from which various foreign matters have been removed in the foreign material selection step, into a twin screw extruder. Is also kneaded into a resin material and extruded in a uniform kneaded state. Therefore, the process of peeling the coating film from the resin bumper is unnecessary, and a practical level resin material can be efficiently regenerated.
In addition, the pulverized resin material that is put into the twin-screw extruder is pelletized from the roughly crushed product of the resin bumper because various foreign matters are removed in the foreign matter sorting process using the wind separation method and the water specific gravity difference sorting method. Even recycled resin materials can be processed continuously and smoothly. In other words, even if a virgin material is not added to the pulverized resin material to be fed into the twin-screw extruder, the molded product extruded into a thin string by the twin-screw extruder is cut naturally during the next process. The situation that causes the line stop such as is eliminated, and the processing efficiency can be improved.

第２の発明は、第１の発明において、二軸押出し機の投入口の直前に、粉砕樹脂材が50〜90重量％、樹脂のベース材とゴムが5〜40重量％、タルクと顔料が5〜10重量％となるように計量して二軸押出し機に投入する。   According to a second invention, in the first invention, 50 to 90% by weight of the pulverized resin material, 5 to 40% by weight of the resin base material and rubber, and talc and the pigment are immediately before the inlet of the twin screw extruder. Weigh to 5 to 10% by weight and feed into twin screw extruder.

このような重量比で各材料を二軸押出し機に投入して溶融混練を行うことにより、一般的なバージン材と同等の物性に優れた樹脂材を再生でき、この再生樹脂材によって再びバンパーを生産することが可能となる。また、二軸押出し機に投入される粉砕樹脂材と他の材料とは粒径の差が大きいが、これらを上記の重量比で二軸押出し機に投入した場合、粒径の差に伴って配合が不均一になるのを解消でき、結果として再生樹脂材の材料性能が安定することになる。   By introducing each material into a twin screw extruder at such a weight ratio and performing melt kneading, a resin material having excellent physical properties equivalent to that of a general virgin material can be regenerated. It becomes possible to produce. In addition, there is a large difference in particle size between the pulverized resin material and other materials charged into the twin screw extruder, but when these are charged into the twin screw extruder at the above weight ratio, The uneven mixing can be eliminated, and as a result, the material performance of the recycled resin material is stabilized.

樹脂製バンパーの再生設備における前半の工程を表した概要図である。It is the schematic showing the process of the first half in the reproduction | regeneration equipment of resin bumpers. 樹脂製バンパーの再生設備における後半の工程を表した概要図である。It is the schematic showing the process of the latter half in the reproduction equipment of a resin bumper. 樹脂製バンパーを再生するための主要な工程を表した工程図である。It is process drawing showing the main processes for reproducing | regenerating a resin bumper. 廃車の樹脂製バンパーに含まれる代表的な異物の種類及び数量と除去率を表したデータ表である。It is the data table showing the kind and quantity of typical foreign materials contained in the resin bumper of a scrap car, and a removal rate.

以下、本発明を実施するための形態を、図面を用いて説明する。
廃車のボデーから取外された樹脂製バンパーは、予め破砕機（図示省略）によって大まかに破砕された粗破砕品として図１の切出し機１０に投入される。この粗破砕品は、図４の代表的な異物を含むとともに、樹脂製バンパー表面の塗膜が付いたままの樹脂材である。切出し機１０から排出された粗破砕品は、金属除去工程Ａにおける鉄選別機１２のマグネットコンベア１２ａによって送られ、その間に粗破砕品に混じっている鉄をマグネットコンベア１２ａで吸着して除去する。
鉄が除去された粗破砕品は、マグネットコンベア１２ａから非鉄金属選別機１３のコンベア１３ａに移されて一方向へ送られる。このコンベア１３ａによって門型の非鉄金属選別機１３を粗破砕品が通過することにより、アルミニュームなどの導電体内に例えば電磁誘導現象による渦電流を発生させ、それに伴う運動力を利用してアルミニュームなどの金属を樹脂材から選別して除去する。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
The resin bumper removed from the body of the scrapped vehicle is put into the cutting machine 10 in FIG. 1 as a roughly crushed product that has been roughly crushed by a crusher (not shown). This coarsely crushed product is a resin material that contains the typical foreign matter shown in FIG. 4 and has a coating film on the surface of the resin bumper. The coarsely crushed product discharged from the cutting machine 10 is sent by the magnetic conveyor 12a of the iron sorter 12 in the metal removal step A, and the iron mixed in the coarsely crushed product is adsorbed and removed by the magnetic conveyor 12a.
The roughly crushed product from which iron has been removed is transferred from the magnet conveyor 12a to the conveyor 13a of the non-ferrous metal sorter 13 and sent in one direction. As the coarsely crushed product passes through the gate-type non-ferrous metal sorter 13 by the conveyor 13a, an eddy current due to, for example, an electromagnetic induction phenomenon is generated in a conductor such as aluminum, and the kinetic force associated therewith makes the aluminum Select and remove metals such as from the resin material.

金属除去工程Ａを通過した粗破砕品は、金属以外の異物を含むとともに塗膜が付いたまま、コンベア１４によって粉砕工程Ｂに送られる。この粉砕工程Ｂにおいては、防音室１５ａ内に設置された粉砕機１５によって粗破砕品が粉砕され、粉砕機１５から排出された粉砕樹脂材はパイプ通路内の空気流によって異物選別工程Ｃに搬送される。この異物選別工程Ｃでは、図４の代表的な異物のうち、テープ類等の軽い物が風力選別機１６によって除去され、砂や残留金属類が水比重差選別漕１７によって除去される。
このようにして異物が除去された粉砕樹脂材は、洗浄・脱水機１８に送られて汚れを落とした後、大粒径材選別機１９で大粒径の粉砕樹脂材が除去される。 The roughly crushed product that has passed through the metal removal step A is sent to the pulverization step B by the conveyor 14 while containing foreign substances other than metal and with a coating film attached. In this pulverization process B, the coarsely crushed product is pulverized by the pulverizer 15 installed in the soundproof room 15a, and the pulverized resin material discharged from the pulverizer 15 is conveyed to the foreign matter selection process C by the air flow in the pipe passage. Is done. In the foreign matter sorting step C, among the representative foreign matters shown in FIG. 4, light things such as tapes are removed by the wind sorter 16, and sand and residual metals are removed by the water specific gravity difference sorter 17.
The pulverized resin material from which foreign matter has been removed in this manner is sent to the washing / dehydrating machine 18 to remove dirt, and then the pulverized resin material having a large particle size is removed by the large particle size material sorter 19.

大粒径材選別機１９から送り出された粉砕樹脂材は、パイプ通路内の空気流によって図２のストックタンク２０に送り込まれる。一方、ストックタンク２０の近くには種々の添加材料を個別に入れた個々の仕込みホッパー２６が設けられている。添加材料としては、PP系樹脂のベース材（バージン材）とゴムとの混合材、タルク、顔料の三点である。
これら三点の添加材料と粉砕樹脂材との計四点が個々の材料供給機２１によって二軸押出し機２２に供給される。 The pulverized resin material sent out from the large particle size material sorter 19 is sent into the stock tank 20 in FIG. 2 by the air flow in the pipe passage. On the other hand, an individual charging hopper 26 in which various additive materials are individually placed is provided near the stock tank 20. There are three additive materials: PP resin base material (virgin material) and rubber mixture, talc, and pigment.
A total of four points of these three additive materials and the pulverized resin material are supplied to the twin screw extruder 22 by the individual material feeders 21.

このように、四点の材料を二軸押出し機２２に供給する直前に混合することで、以下のような不具合が解消され、想定した性状の樹脂材を安定して再生することができる。
すなわち、通常の樹脂ペレットの粒径は数mm程度であるが、10数mm程度の粒径に成形することも可能である。そこで、粉砕工程Ｂでのエネルギー消費を抑えるために、粉砕樹脂材は10〜20mm程度の粒径に粉砕するが、PP系樹脂のベース材やゴムの粒径は数mm程度、タルクの粒径は数μm程度であり、粉砕樹脂材と各添加材料との粒径の差が大きい。このため、粉砕樹脂材と各添加材料とを予め混合して二軸押出し機２２のホッパーに投入すると、粒径の小さい材料が先に流れ込んだり、粉末に近いタルクがホッパー内壁に残ったりして二軸押出し機２２で押出し成形される成形品の材料配合が不均一になる。結果として樹脂ペレットの性状にばらつきが生じる。 Thus, by mixing the four-point material immediately before being supplied to the twin-screw extruder 22, the following problems can be solved and the assumed resin material can be stably regenerated.
That is, the particle diameter of ordinary resin pellets is about several millimeters, but it can be molded to a particle diameter of about several tens of millimeters. Therefore, in order to suppress energy consumption in the pulverization process B, the pulverized resin material is pulverized to a particle size of about 10 to 20 mm, but the PP resin base material and rubber have a particle size of about several mm and the talc particle size. Is about several μm, and the difference in particle size between the ground resin material and each additive material is large. For this reason, when the pulverized resin material and each additive material are mixed in advance and put into the hopper of the twin-screw extruder 22, a material having a small particle size flows in first, or talc close to powder remains on the inner wall of the hopper. The material composition of the molded product extruded by the twin screw extruder 22 becomes non-uniform. As a result, the properties of the resin pellets vary.

これに対し、前述の四点材料をそれぞれの供給直前に混合するシステムにより、各材料供給機２１において粉砕樹脂材が50〜90重量％、PP系樹脂のベース材とゴムが5〜40重量％、タルクと顔料が5〜10重量％となるように計量し、かつ、混合した材料が二軸押出し機２２のホッパーに投入される。このような重量比で粉砕樹脂材と添加材料とを二軸押出し機２２のホッパーに投入することにより、樹脂ペレットの性状が均一になり、比重＝1.05±0.02、メルトフロー＝30±10ｇ/10min、シャルピー衝撃＝20±10KJ/m2の樹脂材を安定して再生することができる。 On the other hand, by the system that mixes the four-point material just before each supply, each material supply machine 21 is 50 to 90% by weight of the pulverized resin material, and 5 to 40% by weight of the PP resin base material and rubber. The talc and the pigment are weighed so as to be 5 to 10% by weight, and the mixed material is put into the hopper of the twin screw extruder 22. By introducing the pulverized resin material and the additive material into the hopper of the twin screw extruder 22 at such a weight ratio, the properties of the resin pellets become uniform, specific gravity = 1.05 ± 0.02, melt flow = 30 ± 10 g / 10 min. , Charpy impact = 20 ± 10KJ / m 2 can be regenerated stably.

二軸押出し機２２は、周知のように所定の温度に加熱されるハウジング内で平行な二軸のスクリューが回転駆動する構造である。この二軸押出し機２２に供給された粉砕樹脂材、PP系樹脂のベース材、タルク、顔料の混合材は、溶融混練されてペースト状になり、分離フィルター２３を経て二軸押出し機２２から押し出される。このとき、ペースト状の混合材は、分離フィルター２３によって粒径が100μm程度の微細な異物が除去された後に複数の細紐状に押出し成形される。
細紐状の成形品は、切断工程Ｄに向けて途切れることなく連続して送られ、切断機２４によってペレット状に切断される。この樹脂ペレットは、パイプ通路内の空気流によって製品タンク２５に送り込まれ、この製品タンク２５内にストックされる。 As is well known, the twin-screw extruder 22 has a structure in which parallel twin-screws are rotationally driven in a housing heated to a predetermined temperature. The pulverized resin material, PP resin base material, talc, and pigment mixture supplied to the biaxial extruder 22 are melt-kneaded to form a paste, and are extruded from the biaxial extruder 22 via the separation filter 23. It is. At this time, the paste-like mixed material is extruded and formed into a plurality of fine string shapes after fine foreign matters having a particle size of about 100 μm are removed by the separation filter 23.
The thin string-shaped molded product is continuously fed toward the cutting step D without being interrupted, and is cut into pellets by the cutting machine 24. The resin pellets are fed into the product tank 25 by the air flow in the pipe passage and stocked in the product tank 25.

粉砕工程Ｂにおいて粉砕された樹脂製バンパーには、既に説明したようにPP系樹脂の粉砕樹脂材以外にも図４で示すような各種の異物が含まれている。そこで、異物選別工程Ｃにおいて、まず風力選別機１６で軽量物を除去し、次に水比重差選別漕１７で重量物を除去することにより、異物を効率よく除去することができる。
すなわち、先に水比重差選別漕１７を用いると、風力選別機１６を用いる前に乾燥工程が必要になって効率がわるくなる。また、粉砕樹脂材には異物だけでなく、粉砕工程Ｂで生じたPP系樹脂の粉末も含まれており、これをそのまま水比重差選別漕１７に送り込むと、PP系樹脂の粉末が漕内に蓄積され、定期的に蓄積粉末を取り除く作業が余分に必要となる。
上記の異物選別工程Ｃにあっては、これらの不具合を解消することができる。なお、金属除去工程Ａ、異物選別工程Ｃ及び分離フィルター２３を用いた結果の異物除去率は、図４の「除去率」の欄に示すとおりである。 As described above, the resin bumper pulverized in the pulverizing step B includes various foreign substances as shown in FIG. 4 in addition to the PP resin pulverized resin material. Therefore, in the foreign matter sorting step C, first, the light weight is removed by the wind power sorter 16 and then the heavy matter is removed by the water specific gravity difference sorter 17 so that the foreign matter can be efficiently removed.
That is, if the water specific gravity difference sorting basket 17 is used first, a drying process is required before the wind power sorter 16 is used, and efficiency is deteriorated. Further, the pulverized resin material includes not only foreign substances but also PP resin powder generated in the pulverization process B. When the pulverized resin material is fed as it is to the water specific gravity difference sorting basket 17, the PP resin powder is contained in the basket. It is necessary to remove the accumulated powder regularly.
In the foreign matter sorting step C described above, these problems can be solved. In addition, the foreign matter removal rate as a result of using the metal removal step A, the foreign matter sorting step C, and the separation filter 23 is as shown in the column “Removal rate” in FIG.

このように、異物選別工程Ｃにおいて図４の表で示す種々の異物が除去された粉砕樹脂材を添加材料と共に二軸押出し機２２に投入して溶融混練することにより、均一な混練状態の樹脂材が押出し成形される。また、二軸押出し機２２を用いることにより、粉砕樹脂材に付いている塗膜も細片化されてペースト状の樹脂材に練り込まれるため、再生された樹脂ペレットは意匠的にも塗膜片が目立たない製品になる。
上記の異物選別工程Ｃと二軸押出し機２２との併用により、再生製品（樹脂ペレット）の物性を問わなければ、粉砕樹脂材にPP系樹脂のベース材を配合しなくても、二軸押出し機２２から押出し成形される細紐状の成形品は、切断工程Ｄに向けて途切れることなく連続して送られ、樹脂ペレットを大量生産することができる。 In this way, the pulverized resin material from which various foreign substances shown in the table of FIG. 4 are removed in the foreign substance selection step C is added to the twin screw extruder 22 together with the additive material and melt-kneaded to obtain a resin in a uniform kneaded state. The material is extruded. In addition, since the coating film attached to the pulverized resin material is fragmented and kneaded into the paste-like resin material by using the twin screw extruder 22, the regenerated resin pellets are designed in the coating film. The product becomes inconspicuous.
If the physical properties of the recycled product (resin pellets) are not questioned by the combined use of the foreign matter sorting step C and the twin screw extruder 22, the twin screw extrusion can be performed without blending the PP resin base material with the ground resin material. The thin string-like molded product extruded from the machine 22 is continuously fed toward the cutting step D without interruption, and resin pellets can be mass-produced.

樹脂製バンパーを再生するための主要工程は図３のとおりであり、これらの各工程を図１及び図２で示すように隣接して配置し、あるいは図１及び図２で示すようにパイプ通路で連結し、パイプ通路内を流れる空気で樹脂材を搬送することにより、搬送中に異物が混入する可能性を低くできる。この結果、細紐状の成形品が途中で切れるのをより確実に解消できる。
また、図３の工程図において、例えば特定の業者から指定の粉砕樹脂材を回収した場合は、金属除去工程Ａ及び粉砕工程Ｂを経ることなく、粉砕樹脂材を異物選別工程Ｃに供給する。この場合の粉砕樹脂材は、ストックタンク２０とは別のストックタンクに送り込んで区別しておくこともある。 The main steps for regenerating the resin bumper are as shown in FIG. 3, and these steps are arranged adjacent to each other as shown in FIGS. 1 and 2, or pipe passages as shown in FIGS. By connecting them with each other and transporting the resin material with the air flowing in the pipe passage, the possibility of foreign matters being mixed during transportation can be reduced. As a result, it is possible to more reliably eliminate the thin string-like molded product being cut off halfway.
In the process diagram of FIG. 3, for example, when a specified pulverized resin material is collected from a specific supplier, the pulverized resin material is supplied to the foreign matter sorting process C without going through the metal removal process A and the pulverization process B. In this case, the pulverized resin material may be sent to a stock tank different from the stock tank 20 for distinction.

２２ 二軸押出し機
Ｂ 粉砕工程
Ｃ 異物選別工程
Ｄ 切断工程
22 Twin screw extruder B Grinding process C Foreign matter sorting process D Cutting process

Claims (2)

金属が除去された樹脂製バンパーの粗破砕品を、粉砕工程において塗膜が付いたままで粉砕した後、風力選別方式及び水比重差選別方式を用いた異物選別工程で異物を除去し、この粉砕樹脂材を二軸押出し機に投入して溶融混練しながら細紐状に押出し成形し、その成形品を切断工程で切断してペレット化する樹脂製バンパーの再生方法。   After roughly pulverizing the resin bumper from which the metal has been removed, with the coating film still attached in the pulverization process, the foreign object is removed in the foreign substance selection process using the wind sorting method and the water specific gravity difference sorting method. A method for recycling a resin bumper, in which a resin material is put into a twin-screw extruder, extruded and formed into a thin string shape while being melt-kneaded, and the molded product is cut and pelletized in a cutting step. 請求項１に記載された樹脂製バンパーの再生方法であって、二軸押出し機の投入口の直前において、粉砕樹脂材が50〜90重量％、樹脂のベース材とゴムが5〜40重量％、タルクと顔料が5〜10重量％となるように計量して二軸押出し機に投入する樹脂製バンパーの再生方法。
2. The method for reclaiming a resin bumper according to claim 1, wherein the pulverized resin material is 50 to 90% by weight and the resin base material and rubber are 5 to 40% by weight immediately before the charging port of the twin screw extruder. A method for regenerating a resin bumper, in which talc and pigment are weighed to 5 to 10% by weight and fed into a twin screw extruder.
JP2009165526A 2009-07-14 2009-07-14 Method for recycling resin-made bumper Pending JP2011020298A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013215919A (en) * 2012-04-05 2013-10-24 Kojima Sangyo Kk Resin recycling method
CN108327323A (en) * 2018-03-22 2018-07-27 浙江山联新材料科技有限公司 A kind of the curtain coating production mechanism and its manufacturing method of degradable express delivery single card millimeter paper
CN110496696A (en) * 2018-05-16 2019-11-26 中胶伟业（北京）科技发展有限公司 A kind of rubber powder, preparation method thereof and device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06254859A (en) * 1993-03-08 1994-09-13 Mazda Motor Corp Method for re-molding resin product
JP2007245726A (en) * 2002-04-19 2007-09-27 Ube Ind Ltd Method for reusing crushed synthetic resin product having cured resin mixed therein
JP2008076375A (en) * 2006-08-21 2008-04-03 Ube Ind Ltd Method for measuring trace constituent contained in thermoplastic waste plastic, method for recycling thermoplastic waste plastic
JP2009107126A (en) * 2007-10-26 2009-05-21 Sharp Corp Plastic recycling method, plastic raw material, plastic molding and method for producing them, and recovery member storage means

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06254859A (en) * 1993-03-08 1994-09-13 Mazda Motor Corp Method for re-molding resin product
JP2007245726A (en) * 2002-04-19 2007-09-27 Ube Ind Ltd Method for reusing crushed synthetic resin product having cured resin mixed therein
JP2008076375A (en) * 2006-08-21 2008-04-03 Ube Ind Ltd Method for measuring trace constituent contained in thermoplastic waste plastic, method for recycling thermoplastic waste plastic
JP2009107126A (en) * 2007-10-26 2009-05-21 Sharp Corp Plastic recycling method, plastic raw material, plastic molding and method for producing them, and recovery member storage means

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013215919A (en) * 2012-04-05 2013-10-24 Kojima Sangyo Kk Resin recycling method
CN108327323A (en) * 2018-03-22 2018-07-27 浙江山联新材料科技有限公司 A kind of the curtain coating production mechanism and its manufacturing method of degradable express delivery single card millimeter paper
CN110496696A (en) * 2018-05-16 2019-11-26 中胶伟业（北京）科技发展有限公司 A kind of rubber powder, preparation method thereof and device

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