JP3603717B2 - How to Recycle Synthetic Resin Waste - Google Patents

How to Recycle Synthetic Resin Waste Download PDF

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Publication number
JP3603717B2
JP3603717B2 JP2000016979A JP2000016979A JP3603717B2 JP 3603717 B2 JP3603717 B2 JP 3603717B2 JP 2000016979 A JP2000016979 A JP 2000016979A JP 2000016979 A JP2000016979 A JP 2000016979A JP 3603717 B2 JP3603717 B2 JP 3603717B2
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vinyl chloride
resin waste
chloride resin
waste
pulverized
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JP2001205632A (en
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治男 志村
良典 田中
大二郎 岩下
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works 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
    • 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

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  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、合成樹脂廃棄物をリサイクルするための技術に関するものである。
【０００２】
【従来の技術】
従来から例えば雨樋として塩化ビニル樹脂製の雨樋が使用されている。そして、施工後長期間経過した雨樋は破損したり、古くなったために取り替えの時期が来ており、取り替えに当たって、雨樋廃材が発生している。また、古い家屋を壊して建て替える場合にも古い雨樋が廃材となり、この場合も雨樋廃材が発生している。そして、これらの雨樋廃材は産業廃棄物として廃棄されていた。
【０００３】
また、雨樋製造工場等においても塩化ビニル樹脂製の成形品を所定の長さに切断して製品とするのであるが、切断された端材等は産業廃棄物として処分されていた。
【０００４】
上記例では塩化ビニル樹脂廃棄物として雨樋の例を示したが塩化ビニルは安価で成形がし易い等の特徴があるので、合成樹脂成形品を成形するための材料として最も広く利用されている材料の一つであり、このため、現在塩化ビニル樹脂廃棄物が産業廃棄物として大量に発生している。
【０００５】
また、近年壁材として金属サイディング材が提供されている。この金属サイディング材は金属製の外皮の裏面側に裏打ち材として発泡ウレタン樹脂を充填して構成してある。そして、工場において製造された金属サイディング材の端部を切断して所定の長さに切断して製品とするのであるが、この切断された端材は産業廃棄物として処分されていた。
【０００６】
上記のように合成樹脂廃棄物は従来産業廃棄物として埋め立てや焼却処分されていたので、環境に悪影響を与えるという問題があり、これら合成樹脂廃棄物をリサイクルして有効利用することが望まれている。
【０００７】
【発明が解決しようとする課題】
本発明は上記の点に鑑みてなされたものであり、簡単な方法で合成樹脂廃棄物をリサイクルして意匠性に富んだ製品価値の高い再生成形品とすることができる合成樹脂廃棄物のリサイクル方法を提供することを主たる課題とし、また、表面がメタリック調の外観にでき、また、合成樹脂廃棄物の有効利用により再生成形品の軽量化が図れ、更に、再生成形品であるにもかかわらず表面を天然石調の外観にすることができる合成樹脂廃棄物のリサイクル方法を提供することを別の課題とするものである。
【０００８】
【課題を解決するための手段】
上記課題を解決するために本発明に係る合成樹脂廃棄物のリサイクル方法は、塩化ビニル樹脂廃棄物を粉砕し、この塩化ビニル樹脂廃棄物の粉砕物１に金属粉を混合して混合原料２を形成し、混合原料２を金型３内に入れ、次に、混合原料２の上に塩化ビニル樹脂廃棄物の粉砕物１のみを入れ、その後、加圧成型して再生成形品４を成形することを特徴とするものである。このような方法を採用することで、塩化ビニル樹脂廃棄物をリサイクルして再生成形品４を形成するだけでなく、塩化ビニル樹脂廃棄物を利用して表面がメタリック調となった再生成形品４を成形することができるものである。
【０００９】
また、塩化ビニル樹脂廃棄物を粉砕した粉砕物１を金型３内に入れ、次に、塩化ビニル樹脂廃棄物を粉砕した粉砕物と発泡ウレタン樹脂廃棄物の粉砕物との混合原料５を入れ、その後、加圧成型して再生成形品４を成形することを特徴とする方法であってもよい。このような方法を採用することで、塩化ビニル樹脂廃棄物をリサイクルして再生成形品４を形成するだけでなく、塩化ビニル樹脂廃棄物を原料として形成した再生成形品４の背面部が、発泡ウレタン樹脂廃棄物の粉砕物と塩化ビニル樹脂廃棄物を粉砕した粉砕物との混合原料により形成した裏打ち層により裏打ちされるのであるが、この裏打ち層が発泡ウレタン樹脂廃棄物を粉砕した粉砕物の存在により軽量化され、生成成形品４自体の軽量化が図れるものである。
【００１０】
また、色の異なる複数種類の塩化ビニル樹脂廃棄物の粉砕物と透明合成樹脂の粉砕物とを混合した混合原料６を金型３内に入れ、次に、混合原料６の上に塩化ビニル樹脂廃棄物の粉砕物１のみを入れ、その後、加圧成型して再生成形品４を成形することを特徴とする方法であってもよい。このような方法を採用することで、塩化ビニル樹脂廃棄物をリサイクルして再生成形品４を形成するだけでなく、塩化ビニル樹脂廃棄物の粉砕物１より形成した再生成形品４の表面部分を、色の異なる複数種類の塩化ビニル樹脂廃棄物の粉砕物と透明合成樹脂の粉砕物との混合原料６により成形される天然石調とすることができるものである。ここで、白色の塩化ビニル樹脂廃棄物の粉砕物１と黒色の塩化ビニル樹脂廃棄物の粉砕物１と透明合成樹脂の粉砕物とを混合して混合原料６を形成することで、表面を御影石調とすることができるものである。
【００１１】
【発明の実施の形態】
以下、本発明を添付図面に示す実施形態に基づいて説明する。
【００１２】
塩化ビニル樹脂製の雨樋やその他の塩化ビニル樹脂廃棄物を回収し、この塩化ビニル樹脂廃棄物を粉砕して粉砕物１（塩化ビニル樹脂廃棄物よりなる塩化ビニル樹脂のペレット）を形成する。そして、この塩化ビニル樹脂廃棄物を粉砕した粉砕物１にアルミニウム粉、銅粉等の各種金属粉を混合して混合原料２を形成する。この場合、例えば塩化ビニル樹脂廃棄物を粉砕した粉砕物１と金属粉との混合比率は１（重量部）：２０００（重量部）〜１（重量部）：５００（重量部）程度であるが、必ずしもこれにのみ限定されないのはもちろんである。
【００１３】
しかして、まず、塩化ビニル樹脂廃棄物の粉砕物１に金属粉を混合した混合原料２を図１（ａ）のように金型３内に入れ、その後、混合原料２の上に図１（ｂ）のように塩化ビニル樹脂廃棄物を粉砕した粉砕物１のみを入れ、その後、図１（ｃ）のように上金型３ａを下降させて加圧成型し、冷却後金型３から取り出して図２に示すような再生成形品４を得るものである。このようにして得た再生成形品４は表面層４ａと裏打ち層４ｂとが一体化した２層構造のものであり、表面層４ａが塩化ビニル樹脂廃棄物を粉砕した粉砕物１と金属粉との混合原料２を成形することで形成されるので、塩化ビニル樹脂廃棄物の再生成形品４とは思えないメタリック調の表面仕上がりとなるものである。
【００１４】
ここで、塩化ビニル樹脂廃棄物を粉砕した粉砕物１にアルミニウム粉、銅粉等の各種金属粉を混合して混合原料２を形成するに当たって、金属粉として異なる種類の金属粉を２種類以上混合することで、金属単体とは一味違った色、光沢の表面仕上がりとすることができるものである。
【００１５】
上記のようにして成形した表面がメタリック調の再生成形品４は種々の建築材として用いることができる金属調の化粧パネルや金属調の表札等として使用することでリサイクルできるものである。
【００１６】
次に、図３、図４に基づいて本発明の他の実施形態につき説明する。本発明においては、まず、塩化ビニル樹脂廃棄物を回収し、この塩化ビニル樹脂廃棄物を粉砕して粉砕物１（塩化ビニル樹脂廃棄物よりなる塩化ビニル樹脂のペレット）を形成する。この場合、工場などで廃材として出た良質の塩化ビニル樹脂廃棄物を粉砕して得た良質の粉砕物１と、使用済みの雨樋などの塩化ビニル樹脂廃棄物を粉砕して得た比較的良質でない粉砕物１とを用意しておく。そして、工場などで廃材として出た良質の塩化ビニル樹脂廃棄物を粉砕して得た良質の粉砕物１は単独で使用するが、使用済みの塩化ビニル樹脂廃棄物を粉砕して得た比較的良質でない粉砕物１は発泡ウレタン樹脂廃棄物の粉砕物と混合して混合原料５として使用する。使用済みの塩化ビニル樹脂廃棄物を粉砕して得た比較的良質でない粉砕物１と発泡ウレタン樹脂廃棄物の粉砕物との混合比率は、例えば、塩化ビニル樹脂廃棄物を粉砕した粉砕物１が１００重量部に対して発泡ウレタン樹脂廃棄物の粉砕物を３０重量部程度混合するものであるが、必ずしもこれにのみ限定されるものではない。
【００１７】
発泡ウレタン樹脂廃棄物の粉砕物は発泡ウレタン樹脂の廃材を粉砕して得たものであり、例えば次のようにして得るものである。すなわち、壁材として近年大量に生産されている金属サイディング材は金属製の外皮の裏面に発泡ウレタン樹脂を充填して裏打ちして構成してあるが、この金属サイディング材の製造工場において端部を切断して所定の長さに切断して製品とする際に端材が発生するので、この端材を回収し、この金属サイディング材の端材の裏面に裏打ち材として充填してある発泡ウレタン樹脂廃棄物を回収してこれを粉砕することで発泡ウレタン樹脂廃棄物の粉砕物を得るものである。
【００１８】
しかして、まず、上記工場などで廃材として出た良質の塩化ビニル樹脂廃棄物を粉砕して得た良質の粉砕物１を図３（ａ）のように金型３内に入れ、その後、上記粉砕物１の上に、上記使用済みの塩化ビニル樹脂廃棄物を粉砕して得た比較的良質でない粉砕物１と発泡ウレタン樹脂廃棄物の粉砕物との混合原料５を図３（ｂ）のように入れ、その後、図３（ｃ）のように上金型３ａを下降させて加圧成型し、冷却後金型３から取り出して図４に示すような表面層４ａと裏打ち層４ｂとが一体化した２層構造の再生成形品４を得るものである。
【００１９】
このようにして得た再生成形品４は表面層４ａが良質の塩化ビニル樹脂廃棄物を粉砕した粉砕物１がペレットとして成形された外観となり、その背部の主体部分が発泡ウレタン樹脂廃棄物の粉砕物と塩化ビニル樹脂廃棄物を粉砕した粉砕物との混合原料により形成した裏打ち層４ｂにより構成されるものである。そして、この裏打ち層４ｂが発泡ウレタン樹脂廃棄物の粉砕物の存在により軽量化され、再生成形品４自体の軽量化が図れるものである。なお、加熱加圧成形によって熱硬化性合成樹脂の発泡ウレタン樹脂廃棄物の粉砕物は粉砕物としての形を保っているが、混合した使用済みの塩化ビニル樹脂廃棄物の粉砕物１が発泡ウレタン樹脂廃棄物の粉砕物同士を接合一体化するバインダーの役目をすることになって、裏打ち層４ｂを成形することになる。使用済みの塩化ビニル樹脂廃棄物の粉砕物１は外観がそれほど良くないが、表面には露出しないので、再生成形品４の表面外観に影響を与えないものである。
【００２０】
上記のようにして成形した再生成形品４は裏打ち層４ｂに発泡ウレタン樹脂廃棄物の粉砕物があるので、全体を塩化ビニル樹脂廃棄物の粉砕物１で成形するよりも軽量化できて、軽くて取扱やすい種々の建築材として用いることができる化粧パネルとしてリサイクルできるものである。
【００２１】
もちろん本実施形態において、裏打ち層４ｂを形成するに当たって、工場などで廃材として出た良質の塩化ビニル樹脂廃棄物を粉砕して得た良質の粉砕物１と発泡ウレタン樹脂廃棄物の粉砕物とを混合して混合原料５を形成し、この混合材料５により裏打ち層４ｂを形成してもよいものである。
【００２２】
次に、図５、図６に基づいて本発明の他の実施形態につき説明する。本発明においては、まず、塩化ビニル樹脂廃棄物を回収し、この塩化ビニル樹脂廃棄物を粉砕して粉砕物１（塩化ビニル廃材よりなる塩化ビニルのペレット）を形成する。この場合、塩化ビニル樹脂廃棄物としては白、グレー、シルバー、ブラウン、黒等の色の異なるものが種々あるので、これらのうち色の異なる複数種類の塩化ビニル樹脂廃棄物をそれぞれ粉砕して異なる色の粉砕物を複数種類得る。そして、この色の異なる複数種類の塩化ビニル樹脂廃棄物の粉砕物１とポリカーボネイト等の透明合成樹脂の粉砕物とを混合して混合原料６を得る。
【００２３】
しかして、まず、色の異なる複数種類の塩化ビニル樹脂廃棄物の粉砕物１と透明合成樹脂の粉砕物とを混合して得た混合原料６を図５（ａ）のように金型３内に入れ、その後、混合原料６の上に図５（ｂ）のように塩化ビニル樹脂廃棄物を粉砕した粉砕物１（ここで使用する破砕物１としては特に色の限定はないが、好ましくは上記表面層の原料の一部として使用する色の異なる複数種類の塩化ビニル樹脂廃棄物の粉砕物１と同じものを用いるのが好ましい。もちろん、単一色のものであってもよいものである）を入れ、その後、図５（ｃ）のように上金型３ａを下降させて加圧成型し、冷却後金型３から取り出して図６に示すような表面層４ａと裏打ち層４ｂとが一体化した２層構造の再生成形品４を得るものである。
【００２４】
このようにして得た再生成形品４は表面が色の異なる複数種類の塩化ビニル樹脂廃棄物の粉砕物１と透明合成樹脂の粉砕物とを混合して得た混合原料６を成形して形成されるので、色の異なる破砕物１を成形することで天然石調の模様となり且つ透明剛性樹脂により天然石の模様における奥行き感が現出できて、天然石調の外観とすることができるものである。実施形態においては、塩化ビニル樹脂廃棄物としては白色と黒色の塩化ビニル樹脂廃棄物をそれぞれ粉砕して白色の粉砕物１と黒色の粉砕物１とを形成し、この白色の粉砕物１、黒色の粉砕物１に更にポリカーボネイト等の透明合成樹脂の粉砕物を混合して得た混合原料６を使用しており、この場合には自然の御影石調の外観とすることができるものである。
【００２５】
このようにして得た再生成形品４は種々の建築材として用いることができる化粧パネルとしてリサイクルできるものである。
【００２６】
【発明の効果】
上記のように本発明の請求項１記載の発明にあっては、塩化ビニル樹脂廃棄物を粉砕し、この塩化ビニル樹脂廃棄物の粉砕物に金属粉を混合して混合原料を形成し、混合原料を金型内に入れ、次に、混合原料の上に塩化ビニル樹脂廃棄物の粉砕物のみを入れ、その後、加圧成型して再生成形品を成形するので、塩化ビニル樹脂廃棄物をリサイクルして再生成形品を得ることができて、資源の有効利用が図れるとともに環境を破壊することがないものであり、しかも、本発明により得られた再生成形品は表面がメタリック調となった従来にない再生成形品を形成できて、リサイクルにより商品価値の高い再生成形品を提供することができるものである。
【００２７】
また、請求項２記載の発明にあっては、塩化ビニル樹脂廃棄物を粉砕した粉砕物を金型内に入れ、次に、塩化ビニル樹脂廃棄物を粉砕した粉砕物と発泡ウレタン樹脂廃棄物の粉砕物との混合原料を入れ、その後、加圧成型して再生成形品を成形するので、塩化ビニル樹脂廃棄物、発泡ウレタン樹脂廃棄物をリサイクルして再生成形品を得ることができて、資源の有効利用が図れるとともに環境を破壊することがないものであり、しかも、本発明により得られた再生成形品は発泡ウレタン樹脂廃棄物の粉砕物を有しているので、軽量化が図れて取扱性に優れるとともに表面には軽量化のための発泡ウレタン樹脂廃棄物の粉砕物が露出しないので表面外観に優れた再生成形品を形成できて、リサイクルにより商品価値の高い再生成形品を提供することができるものである。
【００２８】
また、請求項３記載の発明にあっては、色の異なる複数種類の塩化ビニル樹脂廃棄物の粉砕物と透明合成樹脂の粉砕物とを混合した混合原料を金型内に入れ、次に、混合原料の上に塩化ビニル樹脂廃棄物の粉砕物のみを入れ、その後、加圧成型して再生成形品を成形するので、塩化ビニル樹脂廃棄物をリサイクルして再生成形品を得ることができて、資源の有効利用が図れるとともに環境を破壊することがないものであり、しかも、本発明により得られた再生成形品は表面が天然石調の外観とすることができて、リサイクルにより商品価値の高い再生成形品を提供することができるものである。
【００２９】
また、請求項４記載の発明にあっては、上記請求項３記載の発明の効果に加えて、白色の塩化ビニル樹脂廃棄物の粉砕物と黒色の塩化ビニル樹脂廃棄物の粉砕物と透明合成樹脂の粉砕物とを混合して混合原料を形成するので、表面を天然御影石に類似した御影石調とすることができるものである。
【図面の簡単な説明】
【図１】（ａ）（ｂ）（ｃ）は本発明における再生成形品の成形順序を示す説明図である。
【図２】同上で得た再生成形品を示す斜視図である。
【図３】（ａ）（ｂ）（ｃ）は本発明における再生成形品の他の成形順序を示す説明図である。
【図４】同上で得た再生成形品の断面図である。
【図５】（ａ）（ｂ）（ｃ）は本発明における再生成形品の更に他の成形順序を示す説明図である。
【図６】同上で得た再生成形品の断面図である。
【符号の説明】
１ 粉砕物
２ 混合原料
３ 金型
４ 再生成形品
５ 混合原料
６ 混合原料[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a technique for recycling synthetic resin waste.
[0002]
[Prior art]
Conventionally, for example, a rain gutter made of a vinyl chloride resin has been used as a rain gutter. The rain gutters that have passed for a long time after the construction have been damaged or have become old, so it is time to replace them, and upon replacement, waste gutters have been generated. Also, when an old house is destroyed and rebuilt, old rain gutters become waste materials, and in this case also, rain gutter waste materials are generated. And these gutter waste materials were discarded as industrial waste.
[0003]
Further, in a gutter manufacturing plant and the like, a molded article made of a vinyl chloride resin is cut into a predetermined length to obtain a product, and the cut off material is disposed of as industrial waste.
[0004]
In the above example, the example of rain gutter was shown as a vinyl chloride resin waste, but since vinyl chloride has features such as being inexpensive and easy to mold, it is most widely used as a material for molding a synthetic resin molded product. As one of the materials, vinyl chloride resin waste is currently generated in large quantities as industrial waste.
[0005]
In recent years, metal siding materials have been provided as wall materials. This metal siding material is formed by filling a back surface of a metal outer skin with a urethane foam resin as a backing material. Then, the end of the metal siding material manufactured in the factory is cut and cut into a predetermined length to obtain a product, and the cut off material has been disposed of as industrial waste.
[0006]
As described above, since synthetic resin waste has conventionally been landfilled or incinerated as industrial waste, there is a problem of adversely affecting the environment.Therefore, it is desired to recycle and effectively utilize these synthetic resin waste. I have.
[0007]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has a simple method of recycling synthetic resin waste to produce a recycle molded product having a high design value and a high product value. The main task is to provide a method, the surface can be made to have a metallic appearance, and the weight of the recycled molded product can be reduced by effective use of synthetic resin waste. Another object of the present invention is to provide a method for recycling synthetic resin waste that can give the surface a natural stone appearance.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a method for recycling synthetic resin waste according to the present invention is to pulverize a vinyl chloride resin waste, mix a metal powder with the pulverized material 1 of the vinyl chloride resin waste, and mix a mixed raw material 2 The mixed raw material 2 is put into the mold 3, and then only the pulverized vinyl chloride resin waste 1 is put on the mixed raw material 2, and then the molded product 4 is formed by pressure molding. It is characterized by the following. By adopting such a method, not only is the recycled molded article 4 formed by recycling the vinyl chloride resin waste, but also the recycled molded article 4 having a metallic surface using the vinyl chloride resin waste. Can be formed.
[0009]
In addition, the pulverized material 1 obtained by pulverizing the vinyl chloride resin waste is put into the mold 3, and then the mixed raw material 5 of the pulverized material obtained by pulverizing the vinyl chloride resin waste and the pulverized urethane foam resin waste is charged. Thereafter, the method may be characterized in that the recycled molded article 4 is molded by pressure molding. By adopting such a method, not only can the vinyl chloride resin waste be recycled to form a recycled molded product 4, but also the back surface of the recycled molded product 4 formed using the vinyl chloride resin waste as a raw material can be foamed. It is backed by a backing layer formed of a mixed material of a crushed urethane resin waste and a crushed vinyl chloride resin waste. The weight is reduced by the presence, and the weight of the formed molded article 4 itself can be reduced.
[0010]
Further, a mixed raw material 6 obtained by mixing a plurality of types of pulverized polyvinyl chloride resin waste and pulverized transparent synthetic resin with different colors is put into the mold 3, and then the vinyl chloride resin is placed on the mixed raw material 6. A method may be employed in which only the waste pulverized material 1 is put in, and then, the molded product 4 is molded by pressurization to form the recycled molded product 4. By adopting such a method, not only can the vinyl chloride resin waste be recycled to form a recycled molded product 4, but also the surface portion of the recycled molded product 4 formed from the crushed product 1 of the vinyl chloride resin waste can be removed. A natural stone tone can be formed from a mixed raw material 6 of a plurality of types of pulverized vinyl chloride resin waste having different colors and a pulverized transparent synthetic resin. Here, the ground material 1 is formed by mixing the ground material 1 of white vinyl chloride resin waste, the ground material 1 of black vinyl chloride resin waste, and the ground material of the transparent synthetic resin to form a mixed raw material 6. It can be toned.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.
[0012]
Rain gutters made of vinyl chloride resin and other vinyl chloride resin waste are collected, and this vinyl chloride resin waste is pulverized to form pulverized materials 1 (vinyl chloride resin pellets made of vinyl chloride resin waste). Then, various metal powders such as aluminum powder and copper powder are mixed with the pulverized material 1 obtained by pulverizing the vinyl chloride resin waste to form a mixed raw material 2. In this case, for example, the mixing ratio of the pulverized product 1 obtained by pulverizing the vinyl chloride resin waste and the metal powder is about 1 (part by weight): 2000 (parts by weight) to 1 (part by weight): about 500 (parts by weight). Of course, the present invention is not necessarily limited to this.
[0013]
First, a mixed raw material 2 obtained by mixing metal powder with a crushed material 1 of vinyl chloride resin waste is put into a mold 3 as shown in FIG. Only the pulverized material 1 obtained by pulverizing the vinyl chloride resin waste as shown in b) is put in. Thereafter, as shown in FIG. 1 (c), the upper mold 3a is lowered to perform pressure molding, and is taken out from the mold 3 after cooling. Thus, a recycled molded product 4 as shown in FIG. 2 is obtained. The reclaimed molded product 4 thus obtained has a two-layer structure in which the surface layer 4a and the backing layer 4b are integrated, and the surface layer 4a has a pulverized product 1 obtained by pulverizing vinyl chloride resin waste, metal powder and Is formed by molding the mixed raw material 2 having a metallic surface finish that cannot be considered as a recycled molded product 4 of vinyl chloride resin waste.
[0014]
Here, in forming the mixed raw material 2 by mixing various metal powders such as aluminum powder and copper powder with the pulverized material 1 obtained by pulverizing the vinyl chloride resin waste, two or more different types of metal powders are mixed as metal powders. By doing so, it is possible to obtain a surface finish with a color and gloss different from that of the simple metal.
[0015]
The recycled molded product 4 having a metallic surface formed as described above can be recycled by using it as a metallic decorative panel or a metallic nameplate that can be used as various building materials.
[0016]
Next, another embodiment of the present invention will be described with reference to FIGS. In the present invention, first, vinyl chloride resin waste is collected, and this vinyl chloride resin waste is pulverized to form a pulverized product 1 (vinyl chloride resin pellets made of vinyl chloride resin waste). In this case, a high-quality pulverized material 1 obtained by pulverizing a high-quality vinyl chloride resin waste generated as a waste material at a factory or the like, and a relatively high-quality pulverized product obtained by pulverizing a vinyl chloride resin waste such as a used rain gutter. A crushed material 1 of poor quality is prepared. The high-quality pulverized material 1 obtained by pulverizing high-quality vinyl chloride resin waste generated as a waste material in a factory or the like is used alone, but the relatively high-quality pulverized material 1 obtained by pulverizing used vinyl chloride resin waste is used. The poor quality pulverized material 1 is mixed with the pulverized material of urethane foam resin waste and used as a mixed raw material 5. The mixing ratio between the relatively poor quality pulverized material 1 obtained by pulverizing the used polyvinyl chloride resin waste and the pulverized material of the urethane foam resin waste is, for example, that the pulverized material 1 obtained by pulverizing the vinyl chloride resin waste is About 30 parts by weight of the pulverized urethane foam waste is mixed with 100 parts by weight, but is not necessarily limited thereto.
[0017]
The pulverized urethane foam resin waste is obtained by pulverizing waste urethane foam resin, and is obtained, for example, as follows. In other words, the metal siding material that has been mass-produced in recent years as a wall material is configured by filling the back surface of a metal outer skin with a foamed urethane resin and backing the metal siding material. Since cut materials are generated when the product is cut into a predetermined length and cut into a product, the cut material is collected, and the urethane foam resin filled as a backing material on the back surface of the cut material of the metal siding material. The waste is collected and crushed to obtain a crushed urethane resin waste.
[0018]
First, a high-quality pulverized material 1 obtained by pulverizing high-quality vinyl chloride resin waste generated as a waste material at the above factory or the like is put into a mold 3 as shown in FIG. The mixed raw material 5 of the relatively low-quality pulverized material 1 obtained by pulverizing the used vinyl chloride resin waste and the pulverized material of the urethane foam resin waste obtained above is shown in FIG. After that, as shown in FIG. 3 (c), the upper mold 3a is lowered and pressure-molded. After cooling, the upper mold 3a is taken out of the mold 3 and the surface layer 4a and the backing layer 4b as shown in FIG. This is to obtain a regenerated molded product 4 having an integrated two-layer structure.
[0019]
The reclaimed molded article 4 thus obtained has a surface layer 4a in which the pulverized material 1 obtained by pulverizing high-quality vinyl chloride resin waste is formed as a pellet, and the main portion of the back portion thereof is a pulverized urethane foam waste. And a backing layer 4b formed of a mixed material of a material and a crushed material obtained by crushing vinyl chloride resin waste. Then, the backing layer 4b is reduced in weight due to the presence of the pulverized urethane foam resin waste, and the recycled molded article 4 itself can be reduced in weight. In addition, although the crushed material of the urethane foam resin waste of the thermosetting synthetic resin maintains the shape as the crushed material by the heat and pressure molding, the crushed material 1 of the mixed used vinyl chloride resin waste is the urethane foam resin. The backing layer 4b is formed by acting as a binder for joining and integrating the crushed resin wastes. Although the appearance of the used crushed vinyl chloride resin waste 1 is not so good, it is not exposed to the surface, so that the surface appearance of the recycled molded product 4 is not affected.
[0020]
The recycled molded article 4 molded as described above has a pulverized urethane foam waste in the backing layer 4b, so that the whole can be made lighter and lighter than molded entirely with the pulverized vinyl chloride resin waste 1. It can be recycled as decorative panels that can be used as various building materials that are easy to handle.
[0021]
Of course, in the present embodiment, in forming the backing layer 4b, a high-quality pulverized product 1 obtained by pulverizing high-quality vinyl chloride resin waste generated as a waste material at a factory or the like and a pulverized product of urethane foam resin waste are used. The mixed raw material 5 may be formed by mixing, and the backing layer 4b may be formed from the mixed material 5.
[0022]
Next, another embodiment of the present invention will be described with reference to FIGS. In the present invention, first, vinyl chloride resin waste is collected, and this vinyl chloride resin waste is pulverized to form a pulverized product 1 (vinyl chloride pellets made of vinyl chloride waste). In this case, there are various kinds of vinyl chloride resin wastes having different colors such as white, gray, silver, brown, and black. Obtain multiple types of colored pulverized material. Then, the mixed material 6 is obtained by mixing the pulverized material 1 of a plurality of kinds of vinyl chloride resin wastes having different colors with the pulverized material of a transparent synthetic resin such as polycarbonate.
[0023]
First, as shown in FIG. 5A, a mixed raw material 6 obtained by mixing the pulverized material 1 of a plurality of types of vinyl chloride resin wastes having different colors and the pulverized material of a transparent synthetic resin is placed in the mold 3 as shown in FIG. After that, a crushed material 1 obtained by crushing vinyl chloride resin waste as shown in FIG. 5B on the mixed raw material 6 (the crushed material 1 used here is not particularly limited in color, but is preferably It is preferable to use the same pulverized product 1 of a plurality of different kinds of vinyl chloride resin wastes of different colors used as a part of the material for the surface layer. Then, as shown in FIG. 5 (c), the upper mold 3a is lowered and press-molded, taken out from the mold 3 after cooling, and the surface layer 4a and the backing layer 4b are integrated as shown in FIG. Thus, a recycled molded article 4 having a two-layer structure is obtained.
[0024]
The regenerated molded product 4 thus obtained is formed by molding a mixed raw material 6 obtained by mixing the pulverized material 1 of a plurality of types of vinyl chloride resin waste having different colors with the pulverized material of the transparent synthetic resin. Therefore, by forming the crushed material 1 having a different color, a natural stone-like pattern can be formed, and a sense of depth in the natural stone pattern can be exhibited by the transparent rigid resin, so that the natural stone-like appearance can be obtained. In the embodiment, as the vinyl chloride resin waste, white and black vinyl chloride wastes are respectively crushed to form a white crushed product 1 and a black crushed product 1. A mixed raw material 6 obtained by further mixing a pulverized product of a transparent synthetic resin such as polycarbonate with the pulverized product 1 is used. In this case, a natural granite appearance can be obtained.
[0025]
The recycled molded article 4 thus obtained can be recycled as a decorative panel that can be used as various building materials.
[0026]
【The invention's effect】
As described above, in the invention of claim 1 of the present invention, a vinyl chloride resin waste is pulverized, and a metal powder is mixed with the pulverized vinyl chloride resin waste to form a mixed raw material. Put the raw materials in a mold, then put only the crushed vinyl chloride resin waste on the mixed raw material, and then press molding to mold the recycled molded product. The recycled molded product obtained by the present invention can effectively obtain resources and does not destroy the environment, and the recycled molded product obtained by the present invention has a metallic surface. Thus, it is possible to provide a recycled molded product having a high commercial value by recycling.
[0027]
In the invention according to claim 2, the pulverized material obtained by pulverizing the vinyl chloride resin waste is put into a mold, and then the pulverized material obtained by pulverizing the vinyl chloride resin waste and the urethane foam resin waste are added. The raw material mixed with the pulverized material is put in, and then the molded product is molded by pressurizing, so that the recycled molded product can be obtained by recycling vinyl chloride resin waste and urethane foam resin waste. The recycled molded product obtained by the present invention has a crushed material of urethane foam resin waste, so that the weight can be reduced and handled. Since the pulverized material of urethane foam resin waste for weight reduction is not exposed on the surface while being excellent in resilience, it is possible to form a regenerated molded product with excellent surface appearance, and provide a regenerated molded product with high commercial value by recycling One in which it is bet.
[0028]
Further, in the invention according to claim 3, a mixed raw material obtained by mixing a crushed product of a plurality of types of vinyl chloride resin waste having different colors and a crushed product of a transparent synthetic resin is put into a mold, and then, Only the pulverized vinyl chloride resin waste is put on the mixed raw material, and then press-molded to form a reclaimed molded product. In addition, resources can be effectively used and the environment is not destroyed. In addition, the recycled molded product obtained by the present invention can have a natural stone-like appearance on the surface, and has high commercial value by recycling. It is possible to provide a recycled molded product.
[0029]
According to the invention of claim 4, in addition to the effect of the invention of claim 3, a crushed product of white vinyl chloride resin waste and a crushed product of black vinyl chloride resin waste are transparently synthesized. Since the mixed raw material is formed by mixing the pulverized material with the resin, the surface can have a granite tone similar to natural granite.
[Brief description of the drawings]
FIGS. 1 (a), 1 (b) and 1 (c) are explanatory views showing a molding order of a recycled molded article in the present invention.
FIG. 2 is a perspective view showing a recycled molded product obtained in the above.
FIGS. 3 (a), 3 (b) and 3 (c) are explanatory views showing another molding order of the recycled molded article in the present invention.
FIG. 4 is a cross-sectional view of the recycled molded product obtained in the above.
FIGS. 5 (a), (b) and (c) are explanatory views showing still another molding order of a reclaimed molded product in the present invention.
FIG. 6 is a cross-sectional view of the recycled molded product obtained in the above.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pulverized material 2 Mixed raw material 3 Die 4 Recycle molding 5 Mixed raw material 6 Mixed raw material

Claims (4)

塩化ビニル樹脂廃棄物を粉砕し、この塩化ビニル樹脂廃棄物の粉砕物に金属粉を混合して混合原料を形成し、混合原料を金型内に入れ、次に、混合原料の上に塩化ビニル樹脂廃棄物の粉砕物のみを入れ、その後、加圧成型して再生成形品を成形することを特徴とする合成樹脂廃棄物のリサイクル方法。The vinyl chloride resin waste is pulverized, and the powdered vinyl chloride resin waste is mixed with metal powder to form a mixed raw material. A method of recycling synthetic resin waste, characterized in that only a crushed resin waste is put in, and then pressure molded to form a recycled molded product. 塩化ビニル樹脂廃棄物を粉砕した粉砕物を金型内に入れ、次に、塩化ビニル樹脂廃棄物を粉砕した粉砕物と発泡ウレタン樹脂廃棄物の粉砕物との混合原料を入れ、その後、加圧成型して再生成形品を成形することを特徴とする合成樹脂廃棄物のリサイクル方法。The pulverized material obtained by pulverizing the vinyl chloride resin waste is put in a mold, and then a mixed raw material of the pulverized material obtained by pulverizing the vinyl chloride resin waste and the pulverized material of the urethane foam resin waste is added. A method for recycling synthetic resin waste, which comprises molding to form a recycled molded product. 色の異なる複数種類の塩化ビニル樹脂廃棄物の粉砕物と透明合成樹脂の粉砕物とを混合した混合原料を金型内に入れ、次に、混合原料の上に塩化ビニル樹脂廃棄物の粉砕物のみを入れ、その後、加圧成型して再生成形品を成形することを特徴とする合成樹脂廃棄物のリサイクル方法。A mixed raw material obtained by mixing a crushed material of a plurality of types of vinyl chloride resin waste having different colors and a crushed material of a transparent synthetic resin is placed in a mold, and then the crushed material of the vinyl chloride resin waste is placed on the mixed raw material. A method for recycling synthetic resin waste, characterized in that only recycled material is molded by pressure molding after that. 白色の塩化ビニル樹脂廃棄物の粉砕物と黒色の塩化ビニル樹脂廃棄物の粉砕物と透明合成樹脂の粉砕物とを混合して混合原料を形成することを特徴とする請求項３記載の合成樹脂廃棄物のリサイクル方法。4. A synthetic resin according to claim 3, wherein a ground material of white vinyl chloride resin waste, a ground material of black vinyl chloride resin waste and a ground material of transparent synthetic resin are mixed to form a mixed raw material. How to recycle waste.
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