JP2742604B2 - Separation and recovery method of composite waste - Google Patents

Separation and recovery method of composite waste

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Publication number
JP2742604B2
JP2742604B2 JP16504289A JP16504289A JP2742604B2 JP 2742604 B2 JP2742604 B2 JP 2742604B2 JP 16504289 A JP16504289 A JP 16504289A JP 16504289 A JP16504289 A JP 16504289A JP 2742604 B2 JP2742604 B2 JP 2742604B2
Authority
JP
Japan
Prior art keywords
waste
pvc
materials
cutter mill
composite material
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.)
Expired - Fee Related
Application number
JP16504289A
Other languages
Japanese (ja)
Other versions
JPH0330877A (en
Inventor
元博 近藤
寛治 大山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Howa Co Ltd
Original Assignee
Howa Textile Industry Co Ltd
Toyota Motor Corp
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Filing date
Publication date
Application filed by Howa Textile Industry Co Ltd, Toyota Motor Corp filed Critical Howa Textile Industry Co Ltd
Priority to JP16504289A priority Critical patent/JP2742604B2/en
Publication of JPH0330877A publication Critical patent/JPH0330877A/en
Application granted granted Critical
Publication of JP2742604B2 publication Critical patent/JP2742604B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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

Landscapes

  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Processing Of Solid Wastes (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Crushing And Pulverization Processes (AREA)

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、複数の材料が積層した複合材の廃棄物（ス
クラップ、不良品等）から、１種又はそれ以上の材料を
分離回収する方法に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for separating and recovering one or more materials from a composite material waste (a scrap, a defective product, etc.) in which a plurality of materials are laminated. About.

〈従来の技術〉 最近では資源の有限性、原材料価格の高騰又は公害防
止の観点から、廃棄物の再生利用が一段と強く要請され
るようになってきている。単一の材料からなる廃棄物で
あればその再生利用は容易である。しかし複数の材料が
積層した複合材については、それを構成する各材料を採
算性よく分離回収することが不可能であることが多く、
再生利用が殆どの場合行なわれていない。<Conventional Technology> In recent years, from the viewpoint of resource finiteness, soaring raw material prices or preventing pollution, there is an increasing demand for recycling of waste. Recycling of waste consisting of a single material is easy. However, for a composite material in which a plurality of materials are laminated, it is often impossible to collect and recover each material constituting the composite material with good profitability.
Recycling is not done in most cases.

そのような複合材の廃棄物の一例として、ポリウレタ
ンとPVC（ポリ塩化ビニル）が積層した廃棄物（以下、
ウレタン付着PVC廃棄物という）がある。これは自動車
内装部品等の製造工場で多量に発生するものであるが、
通常焼却処分されている。しかしウレタン付着PVC廃棄
物を焼却処分するうと、PVC中に含まれている塩素が塩
化水素となり、それが焼却炉やその付帯設備を腐食させ
るので設備の寿命が短くなるうえに公害問題を引き起こ
し易い。As an example of such composite material waste, polyurethane and PVC (polyvinyl chloride) laminated waste (hereinafter, referred to as waste)
Urethane-adhered PVC waste). This occurs in large quantities in manufacturing plants for automobile interior parts, etc.
Usually incinerated. However, when incinerating urethane-adhered PVC waste, chlorine contained in PVC becomes hydrogen chloride, which corrodes the incinerator and its ancillary equipment, shortening the life of the equipment and easily causing pollution problems .

そのため一部でウレタン付着PVC廃棄物の分離回収が
試みられている。その方法はウレタン付着PVC廃棄物を
カッターミルで粉砕することによりPVCからウレタンを
剥離させ、その破砕集合物を多段の分級装置で分級する
ことによりPVCとウレタンを分離回収する方法である。For this reason, some attempts have been made to separate and collect urethane-bound PVC waste. In this method, urethane adhered to PVC is crushed by a cutter mill to separate urethane from PVC, and the crushed aggregate is classified by a multi-stage classifier to separate and collect PVC and urethane.

〈発明が解決しようとする課題〉 上記のウレタン付着PVC廃棄物の分離回収方法には次
のような問題点がある： 従来のカッターミルによる粉砕ではウレタンとPVCを
十分に剥離させることはできず、粉砕物から分級によっ
て分離回収されたPVCにはその物性低下の主因となるウ
レタンの20〜30％の混入が避けられない； ウレタンとPVCの剥離が不十分なために、粉砕物の分
級には多段の分級装置が必要であるうえに最終行程では
水を用いる湿式分級を行なう必要があることから、ラン
ニングコストや乾燥費が多大となって再生利用のコスト
メリットが失われる。<Problems to be Solved by the Invention> The above-mentioned method for separating and recovering urethane-adhered PVC waste has the following problems: Conventional pulverization using a cutter mill cannot sufficiently separate urethane and PVC. In addition, 20-30% of urethane, which is the main cause of deterioration of physical properties, is unavoidable in the PVC separated and recovered from the pulverized material by classification. In order to classify the pulverized material due to insufficient separation of urethane and PVC Since a multistage classifier is required and wet classification using water is required in the final step, running costs and drying costs are increased, and the cost advantage of recycling is lost.

以上のように、複数の異なる材料が積層した複合材か
ら分離回収された材料は、一般的に不純物を含むために
新品の材料に比較して物性的に劣るという問題があり、
一方高純度に分離回収しようとすれば極めて低収率で企
業の採算ベースに乗りにくいという問題がある。これら
の問題が複合材廃棄物の分離回収・再生利用を困難にし
ている。As described above, a material separated and recovered from a composite material in which a plurality of different materials are laminated generally has a problem that physical properties are inferior to a new material due to containing impurities,
On the other hand, there is a problem that it is difficult to separate and recover with high purity at a very low yield and to be profitable for a company. These problems make separation, recovery and recycling of composite waste difficult.

本発明は上記諸問題を解決する目的でなされたもので
あり、その解決しようとする課題は、複数の材料が積層
した複合材の廃棄物から、その構成材料を簡便なる手段
を以って高純度且つ高収率に分離回収する方法を提供す
ることである。The present invention has been made for the purpose of solving the above-mentioned problems, and an object to be solved by the present invention is to improve the constituent materials of composite materials obtained by laminating a plurality of materials by using a simple means. It is an object of the present invention to provide a method of separating and recovering the compound in a high purity and a high yield.

〈課題を解決するための手段〉 上記課題を解決できる本発明の複合材廃棄物の分離回
収方法は、比重の異なる複数の材料が積層した複合材の
廃棄物を、固定刃と回転刃の両刃先間隔を複合材の最も
比重の大きい層の厚さの100〜300％の寸法としたカッタ
ーミルで粉砕し且つ複合材の比重の異なる複数の材料同
士を剥離し、得られた各材料の混合粉砕物を比重差によ
って分級することを特徴とする。<Means for Solving the Problems> The method for separating and recovering composite waste according to the present invention, which can solve the above-mentioned problems, comprises a composite waste in which a plurality of materials having different specific gravities are laminated, and a fixed blade and a rotary blade. Pulverize with a cutter mill with the distance between the ends of the layer having the largest specific gravity of the composite material being 100 to 300% of the thickness of the layer having the highest specific gravity, and exfoliate a plurality of materials having different specific gravities of the composite material, and mix the obtained materials. The pulverized material is classified based on a difference in specific gravity.

本発明方法において、廃棄物はその各材料の比重が互
いに異なる必要があり、ウレタン付着PVCのように比重
の差が大きいほど良好に分離回収できる。なお“複数の
材料が積層した複合材”というのは、その各材料が相互
に溶融したり、均一に分散したりしていない材料であっ
て、何らかの形状を有する各材料が接着した又は組み合
わさった材料を意味する。複合材の構成材料としては熱
可塑性樹脂、熱硬化性樹脂、軟質及び硬質ゴム等が挙げ
られる。In the method of the present invention, the specific gravity of each material of the waste must be different from each other, and the larger the difference in specific gravity, such as urethane-attached PVC, the better the separation and recovery. Note that a “composite material in which a plurality of materials are laminated” is a material in which each material is not mutually melted or uniformly dispersed, and each material having any shape is bonded or combined. Means the material. The constituent materials of the composite material include thermoplastic resins, thermosetting resins, soft and hard rubbers, and the like.

本発明方法はいわば、次の２行程： ｉ）第１工程…固定刃と回転刃の刃先間隔を広げたカッ
ターミルで廃棄物を粉砕する工程． ii）第２工程…第１工程で得られた粉砕物を比重差を利
用して各材料別に分級する工程． を有する方法である。以下各工程ごとに説明する。The method of the present invention is, so to speak, the following two steps: i) First step: a step of pulverizing waste with a cutter mill in which the distance between the fixed blade and the rotary blade is widened. ii) Second step: a step of classifying the pulverized material obtained in the first step for each material using a specific gravity difference. It is a method having. Hereinafter, each step will be described.

第１工程では複合材の各材料をより効果的に分離させ
るために、カッターミルに剥離と粉砕を同時に行わせ
る。本来カッターミルでは材料の粉砕しかできないが、
ここでは特別な使用方法を採用することにより、すなわ
ち従来とは逆にカッターミルの固定刃と回転刃の両刃先
間隔を広げることによりカッターミルに粉砕のほかに剥
離も行なえるようにする。In the first step, the cutter mill is simultaneously peeled and pulverized in order to more effectively separate each material of the composite material. Originally a cutter mill can only grind materials,
Here, by adopting a special use method, that is, by widening the interval between the two cutting edges of the fixed blade and the rotary blade of the cutter mill, contrary to the conventional method, the cutter mill can be peeled in addition to pulverization.

この固定刃と回転刃の両刃先間隔は複合材料の最も比
重の大きい層の厚さの100〜300％とするのが重要であ
る。通常のカッターミルでは固定刃と回転刃の両刃先間
隔が0.1mm程度に調整されているが、廃棄物が例えば厚
さ0.5mmのPVC層と厚さ15mmのウレタン層からなる場合、
薄いPVC層の厚さに基づいて、カッターミルの固定刃と
回転刃の両刃先間隔を0.5mm〜1.5mmほどに調整する。な
お固定刃と回転刃の両刃先間隔を300％以上に広げても
剥離できるが、カッターミルの破砕能力が著しく低下し
コスト高になる。そのため固定刃と回転刃の両刃先間隔
は最大300％程がよい。一方、100％以下とすると剥離効
果は得られず、従来の破砕と変らない。It is important that the distance between the fixed blade and the rotary blade is 100 to 300% of the thickness of the layer having the highest specific gravity of the composite material. In a normal cutter mill, the gap between both the cutting edge of the fixed blade and the rotating blade is adjusted to about 0.1 mm, but when the waste consists of, for example, a 0.5 mm thick PVC layer and a 15 mm thick urethane layer,
Based on the thickness of the thin PVC layer, adjust the clearance between the fixed blade and the rotary blade of the cutter mill to about 0.5 mm to 1.5 mm. The separation can be performed even if the distance between the fixed blade and the rotary blade is increased to 300% or more, but the crushing ability of the cutter mill is significantly reduced and the cost is increased. Therefore, the distance between the fixed blade and the rotary blade is preferably up to 300%. On the other hand, if it is less than 100%, the peeling effect is not obtained, and it is not different from the conventional crushing.

カッターミルの回転速度、刃形状、カッタースクリー
ンの目の大きさ等の条件はもっとも効率よく各材料を分
離回収できるように選択すればよい。一般的に微粉砕す
ればするほど各材料の回収率は向上するがコスト高とな
るため、コストと回収率の関係を勘案して粉砕粒径を選
定すればよい。Conditions such as the rotation speed of the cutter mill, the shape of the blade, the size of the mesh of the cutter screen, and the like may be selected so that each material can be separated and recovered most efficiently. In general, the finer the pulverization, the higher the recovery rate of each material, but the higher the cost. Therefore, the size of the pulverized particles may be selected in consideration of the relationship between the cost and the recovery rate.

第２工程での分級には、比重差を利用した分級装置で
あれば、風力分級機、遠心分離機、浮選機等どのような
装置でも使用できる。複合材廃棄物の各材料の比重差が
よほど小さい場合には湿式分級による方が良いこともあ
るが通常は操作的に簡便な乾式分級で十分である。また
乾式分級による場合であっても、比重差の大きい材料か
ら作られている複合材の廃棄物、例えばウレタン付着PV
Cの粉砕物の分級は一段の分級で必要かつ十分なPVCの回
収ができる。二段、三段の分級でも勿論可能であるが必
要ない。For the classification in the second step, any classification device such as an air classifier, a centrifugal separator, or a flotation device can be used as long as the classification device utilizes a specific gravity difference. When the difference in specific gravity of each material of the composite material waste is very small, it may be better to perform wet classification, but usually dry classification that is simple in operation is sufficient. Even in the case of dry classification, waste of composite materials made from materials having a large difference in specific gravity, for example, urethane-adhered PV
Classification of the pulverized material of C can collect necessary and sufficient PVC by one-stage classification. Of course, two-stage or three-stage classification is possible, but not necessary.

以上のように簡便な分級方法でよいのは先の第１工程
で複合材のほぼ完全な剥離が達成されていることによ
る。As described above, the simple classification method may be used because the composite material is almost completely separated in the first step.

なお複合材の構成材料として非常に粉砕され易い材料
が含まれていて、篩い分け出来るほど各材料毎に異なる
粒度分布で粉砕されるなら適当な篩い分け機で分級して
もよい。If the composite material contains a material that is very easily crushed and is crushed with a different particle size distribution for each material so that sieving can be performed, the material may be classified by an appropriate sieving machine.

〈作用〉 カッターミルの固定刃と回転刃の両刃先間隔を広げる
とカッターミルの粉砕性能は低下するが、廃棄物に対し
て継続的に剪断力を与えることになる。特にカッターミ
ルの固定刃と回転刃の両刃先間隔を複合材の最も比重の
大きい層の厚さの100〜300％の寸法とすると、積層した
各材料層に剪断力を受ける層と受けない層が生じること
になり剥離が促進されると共に必要な粉砕は確保され
る。このように廃棄物の粉砕時にその各材料がほぼ完全
に剥離されていると、その後の分級操作が容易となり、
純度の高い回収品が得られる。<Operation> If the distance between the fixed blade and the rotary blade of the cutter mill is increased, the crushing performance of the cutter mill decreases, but the shear force is continuously applied to the waste. In particular, if the distance between the cutting edge of the fixed blade and the rotating blade of the cutter mill is 100 to 300% of the thickness of the layer with the highest specific gravity of the composite material, the layers that receive the shearing force and the layers that do not receive the shearing force on each layer of material Is generated, peeling is promoted, and necessary pulverization is secured. If the materials are almost completely separated when the waste is crushed, the subsequent classification operation becomes easy,
A highly purified product can be obtained.

〈実施例〉 自動車用インストルメントパネルパッド（内層材：厚
さ15mmの軟質ウレタンフォーム、表皮材：厚さ0.5mmのP
VC）の製造工程で生じるトリミング屑を第１図に示すよ
うなカッターミルで粉砕する。このカッターミルは、朋
来鉄工所（株）製の一軸式の廃プラント粉砕用破砕機で
ある。該カッターミルは回転刃１を中心にして上本体２
と下本体３を組み付けたもので、下本体３は固定刃４と
スクリーン５及びスクリーン受け６を備えている。上本
体２の上部と下本体３の下部にはそれぞれ開閉蓋（図示
せず）が設けられており、上から廃棄物を投入し、下か
ら粉砕物を取り出せるようになっている。<Example> Instrument panel pad for automobile (inner layer material: soft urethane foam with a thickness of 15 mm, skin material: P with a thickness of 0.5 mm)
The trimming waste generated in the manufacturing process of VC) is pulverized by a cutter mill as shown in FIG. This cutter mill is a single-shaft waste plant crusher manufactured by Horai Iron Works, Ltd. The cutter mill has an upper body 2 around a rotary blade 1.
The lower body 3 includes a fixed blade 4, a screen 5, and a screen receiver 6. Opening / closing lids (not shown) are provided at the upper part of the upper main body 2 and the lower part of the lower main body 3, respectively, so that waste can be introduced from above and pulverized matter can be taken out from below.

本実施例では廃棄物の粉砕工程でこのカッターミル
を、固定刃４と回転刃１の両刃先間隔を従来の0.1mmか
ら1.0mm（PVC層の厚さの200％）へと広げて使用した。In the present embodiment, this cutter mill was used in the waste grinding step by expanding the gap between the fixed blade 4 and the rotary blade 1 from the conventional 0.1 mm to 1.0 mm (200% of the thickness of the PVC layer). .

そうして得られた粉砕物の分級には、第２図に示すよ
うな横風式の風力分級機を用いた。通気孔7,7…から入
る空気をファン８によって強制的に排気することにより
分離室９内に横風10を生じさせ、上方から粉砕物11を落
下させるとウレタン12とPVC13は風力と重力の関係から
飛ばされる距離に差が生じ分離される。The crushed material thus obtained was classified using a cross wind type air classifier as shown in FIG. By forcibly exhausting the air entering through the ventilation holes 7, 7, ... with the fan 8, a cross wind 10 is generated in the separation chamber 9, and when the crushed material 11 is dropped from above, the urethane 12 and the PVC 13 have a relationship between wind force and gravity. There is a difference between the distances from which they are skipped, and they are separated.

本実施例の方法における粉砕粒径がPVCの回収率にど
のように影響するかを調べ、固定刃と回転刃の両刃先間
隔を0.1mmとして粉砕する従来方法の場合と較べた。そ
の結果を第３図に示す。どちらの方法でも粉砕粒径を小
さくするほど回収率は向上する傾向が見られるが、本実
施例の方法が従来方法に比べ明らかに優っていることが
判かる。The influence of the pulverized particle size on the recovery rate of PVC in the method of the present example was examined, and compared with the case of the conventional method in which the distance between both the fixed blade and the rotary blade was 0.1 mm. FIG. 3 shows the results. In either case, the recovery rate tends to be improved as the pulverized particle size is reduced, but it can be seen that the method of this example is clearly superior to the conventional method.

上記の様に分離回収されたPVCを２本ロール機にて15
分間練ることによって試験片を作り、比重、硬さ、引張
強さ、伸び、及び引裂強さについて調べた。なお比重は
JIS−Ｋ−7112試験法6.2水中置換法によって測定し、硬
さはJIS−Ｋ−6031試験法：スプリング硬度（20℃）法
で測定した。また引張強さ、伸び及び引裂強さはいづれ
もJIS−Ｋ−6301試験法に基づいて測定した。The PVC separated and recovered as described above is rolled into a 15
Specimens were made by kneading for minutes and examined for specific gravity, hardness, tensile strength, elongation, and tear strength. The specific gravity is
JIS-K-7112 test method 6.2 Measured by the underwater displacement method, and the hardness was measured by the JIS-K-6031 test method: spring hardness (20 ° C) method. The tensile strength, elongation and tear strength were all measured based on the JIS-K-6301 test method.

得られた試験結果を下記表に示す。対照試験として従
来方法により分離回収されたPVC、新品をPVC及び未処理
の廃棄物について行なわれた試験の結果も示す。The test results obtained are shown in the table below. As a control test, the results of tests performed on PVC separated and recovered by the conventional method, new PVC and untreated waste are also shown.

この結果から従来方法よりも本発明方法で分離回収さ
れたPVCの方が再生利用に適する物性を備えていること
が分かる。 From this result, it can be seen that the PVC separated and recovered by the method of the present invention has physical properties more suitable for recycling than the conventional method.

上記のように回収されたPVCは単体でPVCシートとして
利用したり、炭酸カルシウム等を加えて防振シート等と
して利用できる。また回収されたウレタンは幅広くウレ
タン製品として利用できる。その利用先としては、サン
バイザー基材、クッション材等がある。The PVC recovered as described above can be used alone as a PVC sheet, or can be used as a vibration-proof sheet or the like by adding calcium carbonate or the like. The recovered urethane can be widely used as a urethane product. As a use destination, there are a sun visor base material and a cushion material.

この実施例では２層構造の廃棄物を用いたが、３層以
上の廃棄物でも同様にして材料の分離回収を行なえるこ
とは今までの説明から容易に理解されよう。In this embodiment, waste having a two-layer structure is used. However, it will be easily understood from the above description that materials can be separated and recovered in the same manner with waste having three or more layers.

〈発明の効果〉 本発明の複合材廃棄物の分離回収方法は以下のような
効果を奏する。<Effects of the Invention> The method for separating and recovering composite waste of the present invention has the following effects.

まずカッターミルの固定刃と回転刃の両刃先間隔を特
定の幅に広げて複合材の剥離 に適する剪断力を与えながら廃棄物を粉砕するので各材
料をほぼ完全に分離でき、回収 率が一段と向上する。First, the distance between the fixed blade and the rotary blade of the cutter mill is widened to a specific width, and the waste is pulverized while applying a shearing force suitable for peeling the composite material, so that each material can be separated almost completely and the recovery rate is further improved improves.

また上記のほぼ完全な分離によって、回収された材料
の純度が高まる。このことは物性的に新品材料に尚更近
いものが得られることを意味しており、再利用範囲の拡
大を図ることができる。The almost complete separation also increases the purity of the recovered material. This means that a material that is even closer to a new material in physical properties can be obtained, and the range of reuse can be expanded.

そのうえ各材料を互いに粒度の異なる粉砕物として回
収できるため、分級方法が容易であり、フルイでも十分
分級できる。したがって分離回収費の低コスト化を実現
できる。In addition, since each material can be collected as pulverized materials having different particle sizes, the classification method is easy, and even a sieve can be sufficiently classified. Therefore, the cost of separation and collection can be reduced.

【図面の簡単な説明】[Brief description of the drawings]

第１図は本発明の一実施例で使用されたカッターミルを
示す要部断面図、 第２図は一実施例で使用された分級装置の基本構成を示
す該略図、 第３図は一実施例における粉砕粒径とPVC回収率の関係
を従来方法におけるそれと 対比させて示す図である。 図中： １……回転刃、４……固定刃FIG. 1 is a sectional view of a main part showing a cutter mill used in one embodiment of the present invention, FIG. 2 is a schematic diagram showing a basic configuration of a classifier used in one embodiment, and FIG. FIG. 4 is a diagram showing the relationship between the pulverized particle size and the PVC recovery rate in Examples in comparison with that in the conventional method. In the figure: 1 ... rotary blade, 4 ... fixed blade

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】比重の異なる複数の材料が積層した複合材
の廃棄物を、固定刃と回転刃の両刃先間隔を複合材の最
も比重の大きい層の厚さの100〜300％の寸法としてカッ
ターミルで粉砕し且つ複合材の比重の異なる複数の材料
同士を剥離し、得られた各材料の混合粉砕物を比重差に
よって分級することを特徴とする複合材廃棄物の分離回
収方法。1. A composite waste material in which a plurality of materials having different specific gravities are laminated is set such that the distance between the fixed blade and the rotary blade is 100 to 300% of the thickness of the layer having the largest specific gravity of the composite material. A method for separating and recovering composite material waste, comprising pulverizing with a cutter mill, exfoliating a plurality of materials having different specific gravities of the composite material, and classifying a mixed and crushed product of the obtained materials according to a difference in specific gravity.
JP16504289A 1989-06-27 1989-06-27 Separation and recovery method of composite waste Expired - Fee Related JP2742604B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16504289A JP2742604B2 (en) 1989-06-27 1989-06-27 Separation and recovery method of composite waste

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16504289A JP2742604B2 (en) 1989-06-27 1989-06-27 Separation and recovery method of composite waste

Publications (2)

Publication Number Publication Date
JPH0330877A JPH0330877A (en) 1991-02-08
JP2742604B2 true JP2742604B2 (en) 1998-04-22

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5876827A (en) * 1992-02-10 1999-03-02 Polyloom Corporation Of America Pile carpet
US5240530A (en) * 1992-02-10 1993-08-31 Tennessee Valley Performance Products, Inc. Carpet and techniques for making and recycling same
JP2725645B2 (en) * 1995-07-12 1998-03-11 株式会社日立製作所 Waste treatment apparatus and treatment method
JP2735040B2 (en) * 1995-07-12 1998-04-02 株式会社日立製作所 Method and apparatus for collecting foaming agent in heat insulating material
JP2003088844A (en) * 2001-09-17 2003-03-25 Matsushita Electric Works Ltd Method of separating decorative wooden material
JP4316220B2 (en) * 2002-11-01 2009-08-19 カルソニックカンセイ株式会社 Method and apparatus for separating and collecting pulverized resin laminate product
JP5368815B2 (en) * 2009-01-29 2013-12-18 株式会社クレハ Method for recovering thermoplastic aromatic polyester resin from multilayer molded body

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5240867A (en) * 1975-09-26 1977-03-30 Maruman Kagaku:Kk Separating and collecting method of plastic material from plastic wast e
JPS5267169A (en) * 1975-11-29 1977-06-03 Yoshio Mori Systm for separating and recovering wasted rubber or vinyl cover tip of electric wire from copper by crusher and air classifier

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