JP3202385B2 - Reprocessing of painted plastic - Google Patents
Reprocessing of painted plasticInfo
- Publication number
- JP3202385B2 JP3202385B2 JP3731193A JP3731193A JP3202385B2 JP 3202385 B2 JP3202385 B2 JP 3202385B2 JP 3731193 A JP3731193 A JP 3731193A JP 3731193 A JP3731193 A JP 3731193A JP 3202385 B2 JP3202385 B2 JP 3202385B2
- Authority
- JP
- Japan
- Prior art keywords
- coating film
- coating
- plastic
- polypropylene
- coated
- 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
Links
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
- 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
- B29B2017/0213—Specific separating techniques
- B29B2017/0255—Specific separating techniques using different melting or softening temperatures of the materials to be separated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
- B29L2009/005—Layered products coated
- B29L2009/006—Layered products coated painted
-
- 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
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Cleaning In General (AREA)
- Processing Of Solid Wastes (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は使用済み塗装プラスチッ
ク材の再生処理方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for reprocessing used paint plastic materials.
【０００２】[0002]
【従来の技術】近年地球環境保全のために使用済みプラ
スチック材料のリサイクルが要望され、各種技術が開発
されている。中でもプラスチックに塗装を施した部品を
再生する場合、再生材料に塗膜が混入すると、機械的特
性が極端に低下するため、塗膜の分離が不可欠となって
いたが、従来はショットブラストによる塗膜除去や、押
出成形機内部で溶融した後にフィルタで分離する方法が
採られていた。2. Description of the Related Art In recent years, there has been a demand for recycling of used plastic materials for preserving the global environment, and various technologies have been developed. In particular, when reclaiming plastic-painted parts, if a paint film is mixed into the reclaimed material, the mechanical properties will be extremely deteriorated, so it has been essential to separate the paint film. A method has been adopted in which a film is removed, or the film is melted inside an extruder and then separated by a filter.
【０００３】[0003]
【発明が解決しようとする課題】従来の塗装プラスチッ
クの再生処理において、塗膜を分離する手段がショット
ブラストの場合は、処理物の形状によりムラが生じて塗
膜が残り易く、これを完全に除去するためには長時間の
処理が必要であった。またショットブラストの効果を上
げるためにショットを強くすると、プラスチックが焼け
たり、ブラストがプラスチックに埋没して異物になるな
どの問題があった。また押出成形機による溶融濾過の場
合は、濾過用フィルタのメッシュを細かくすれば、塗膜
はかなり分離できるが、塗膜が薄いため伸びた破断塗膜
が混入する欠点があった。更に他の弊害として、フィル
タによる圧力損失が大きくなるため、押出量の低下や剪
断発熱によるプラスチックの劣化を来たし、再生材料の
品質低下となる欠点があった。以上のように従来の再生
処理方法では、塗膜の残留、異物の混入、更にプラスチ
ックの劣化等を回避することが出来なかった。本発明は
前記従来の問題を解消できる、効率的で新規な塗装プラ
スチックの再生処理方法を提供しようとするものであ
る。In the conventional process of regenerating a coated plastic, if the means for separating the coating film is shot blast, unevenness occurs due to the shape of the processed material, and the coating film tends to remain. It took a long time to remove them. In addition, when the shot is strengthened to enhance the effect of the shot blast, there is a problem that the plastic is burned or the blast is buried in the plastic and becomes a foreign substance. In the case of melt filtration using an extruder, if the mesh of the filter for filtration is made finer, the coating film can be considerably separated. However, since the coating film is thin, a stretched broken coating film is mixed. As another adverse effect, there is a disadvantage that the pressure loss due to the filter becomes large, the amount of extruded material is reduced, the plastic is deteriorated due to heat generated by shearing, and the quality of the recycled material is reduced. As described above, with the conventional reprocessing method, it was not possible to avoid the remaining of the coating film, the mixing of foreign matter, and the deterioration of plastic. An object of the present invention is to provide an efficient and novel method for reprocessing a coated plastic, which can solve the conventional problems.
【０００４】[0004]
【課題を解決するための手段】このため本発明は、熱可
塑性プラスチック部材上に熱硬化性塗料からなる塗膜を
形成した塗装プラスチック材の再生処理方法において、
前記塗装プラスチック材を加熱して、前記塗膜直下の前
記熱可塑性プラスチック部材を溶融して薄いプラスチッ
ク溶融層を形成させた後、同溶融層と塗膜を除去するよ
うにしたものであり、また塗装プラスチック材の塗膜除
去操作の前処理として塗装面を平坦化するようにしたも
ので、これを課題解決の手段とするものである。更に本
発明は、ウレタン塗装したポリプロピレン成形品の塗膜
を除去する方法において、同成形品をウレタン塗料のゴ
ム状温度域で、更にポリプロピレンの軟化温度以下の範
囲に加熱して塗膜を除去するようにしてなるもので、こ
れを課題解決のための手段とするものである。また、本
発明の再生処理方法は、自動車部品のバンパーにも適用
可能である。 SUMMARY OF THE INVENTION Accordingly, the present invention provides a heat-resistant
A coating film made of thermosetting paint is applied on a plastic member.
In the method of recycling the formed coated plastic material,
Heat the painted plastic material and place it just below the coating
After melting the thermoplastic plastic member to form a thin plastic molten layer, the molten layer and the coating are removed, and the painted surface is used as a pre-treatment for removing the coating of the coated plastic material. Is flattened, and this is used as a means for solving the problem. Further, the present invention provides a method of removing a coating film of a urethane-coated polypropylene molded product, wherein the molded product is heated in a rubber-like temperature range of the urethane paint and further to a temperature lower than a softening temperature of the polypropylene to remove the coating film. This is used as a means for solving the problem. Also book
The reprocessing method of the invention is also applied to bumpers of automobile parts.
It is possible.
【０００５】[0005]
【作用】塗装プラスチック部品の殆どは、熱可塑性プラ
スチックの成形体に熱硬化性プラスチックをベースとし
た塗料が塗装されている。このため塗装表面から急速に
加熱すると、塗膜は溶融せずに塗膜直下のプラスチック
に薄い溶融層が生成する。この薄い溶融層は軟弱であ
り、機械的な剪断力を加えると容易に溶融層から塗膜が
分離できる。溶融層の形成温度は、結晶性プラスチック
では溶融温度以上、非晶性プラスチックではガラス転移
点以上の温度域である。そして急速加熱条件としては、
溶融層を可能な限り薄くして再生材の回収率を上げるた
めに、短時間に塗膜直下のプラスチックを溶融させて、
熱伝導による溶融層の厚化を防止することが、再生プラ
スチックの回収率向上につながる。In most of the painted plastic parts, a molded article of a thermoplastic plastic is coated with a paint based on a thermosetting plastic. Therefore, when heated rapidly from the painted surface, the coating film does not melt and a thin molten layer is formed on the plastic immediately below the coating film. This thin molten layer is soft, and the coating film can be easily separated from the molten layer by applying a mechanical shearing force. The temperature at which the molten layer is formed is a temperature range higher than the melting temperature for crystalline plastics and higher than the glass transition point for amorphous plastics. And as the rapid heating condition,
In order to make the molten layer as thin as possible and increase the recovery rate of recycled materials, melt the plastic directly under the coating in a short time,
Preventing the molten layer from becoming thicker due to heat conduction leads to an improved recovery rate of recycled plastic.
【０００６】またウレタン塗装したポリプロピレンを、
ウレタン塗膜のゴム状温度域で、更にポリプロピレンの
軟化温度以下の範囲で加熱することにより、ポリプロピ
レンは固体状態で剛性を保持し、ウレタン塗膜は、ゴム
状態となる。このウレタン塗膜のゴム状態は、ウレタン
が架橋反応で三次元構造となっているため、ポリプロピ
レンの軟化温度域では溶融することはない。このような
状態にすると、ウレタン塗膜はポリプロピレン母材から
容易に剥離できる状態となり、常法の剪断力を与えるこ
とにより、塗膜を分離することが可能である。Also, urethane-coated polypropylene is
By heating in the rubber-like temperature range of the urethane coating film and further in the range below the softening temperature of the polypropylene, the polypropylene maintains the rigidity in a solid state, and the urethane coating film becomes a rubber state. In the rubber state of the urethane coating film, since the urethane has a three-dimensional structure due to a crosslinking reaction, it does not melt in the softening temperature range of polypropylene. In such a state, the urethane coating film can be easily separated from the polypropylene base material, and the coating film can be separated by applying a conventional shearing force.
【０００７】[0007]
【実施例】以下本発明を図面の実施例について説明する
と、図１は本発明方法を実施する１実施例を示し、１は
塗膜２を施した自動車用のプラスチック製廃バンパー、
３は廃バンパー１上の塗膜を急速に加熱して、塗膜２の
直下に薄い溶融層を形成させる火炎４を噴射するガスバ
ーナであり、この溶融層を介し塗装プラスチック廃バン
パー１のプラスチックと塗膜２を、塗膜の除去手段５
（例えばドクター、回転刃、板状ナイフ、ワイヤブラシ
等）で塗膜屑６として除去する。なお、ガスバーナ３に
よる加熱に代え、赤外線加熱、熱プラズマによる加熱、
加熱板、加熱ローラによる加熱、加熱液体のスプレーに
る加熱、加熱液体浴への浸漬による加熱等の方法が利用
できる。また７はローラ８を用いた廃バンパー１の表面
の倣い手段である。９はガスバーナ３、塗膜の除去手段
５、倣い手段７を一体に固定する固定板である。また本
発明は、前記塗膜２の除去操作の前処理として、プラス
チック廃バンパー１を加熱ロール等を用いてプレスする
ことにより平坦化すれば、塗膜２の除去作業の効率化
と、単純化を図ることができる。また本発明は、ウレタ
ン塗装したポリプロピレン廃バンパーの塗膜除去方法に
も適用でき、この場合にはウレタン塗料のゴム状温度域
で、更にポリプロピレンの軟化温度以下の範囲に加熱し
て塗膜を除去することにより、塗装プラスチックの再生
処理を行なうものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 shows one embodiment of the method of the present invention, wherein 1 is a waste plastic bumper for automobiles provided with a coating film 2;
Reference numeral 3 denotes a gas burner for rapidly heating the coating film on the waste bumper 1 and injecting a flame 4 for forming a thin molten layer immediately below the coating film 2. The coating film 2 is formed by removing the coating film 5
(For example, a doctor, a rotary blade, a plate-shaped knife, a wire brush, etc.), the coating film dust 6 is removed. In addition, instead of heating by the gas burner 3, infrared heating, heating by thermal plasma,
Methods such as heating with a heating plate or heating roller, heating by spraying a heating liquid, and heating by immersion in a heating liquid bath can be used. Reference numeral 7 denotes a copying means for copying the surface of the waste bumper 1 using the roller 8. Reference numeral 9 denotes a fixing plate for integrally fixing the gas burner 3, the coating film removing means 5, and the copying means 7. In addition, the present invention can improve the efficiency and simplification of the work of removing the coating film 2 by flattening the waste plastic bumper 1 by pressing using a heating roll or the like as a pretreatment for the operation of removing the coating film 2. Can be achieved. The present invention can also be applied to a method for removing a paint film of a urethane-coated polypropylene waste bumper. In this case, the paint film is removed by heating the rubber-like temperature range of the urethane paint to a temperature lower than the softening temperature of the polypropylene. By doing so, the coated plastic is regenerated.
【０００８】ここで請求項１の具体例を以下に説明す
る。５年間使用した車から回収したプラスチックバンパ
ー（ポリプロピレンとエチレン−プロピレンゴムのポリ
マーブレンドを射出成形し、ウレタン系塗料を施したも
の）の再生処理を行なった。この場合は回収したプラス
チックバンパーを、１５０℃に予熱したプレスにより１
００kg／cm2 の圧力で３０秒間プレスして平坦化した。
その後ガスバーナで塗装面を加熱し、塗膜直下のプラス
チックの温度が、１９０℃に昇温して溶融層が形成され
ていることを確認し、直ちに板状ナイフで塗膜を除去し
た。この除去処理により塗膜はバンパーから完全に除去
することができた。塗膜除去後のバンパーから試験片を
採取し、引張強度と破断伸びを測定したところ、それぞ
れ１８２kgf/cm2 、２４０％の結果を得た。Here, a specific example of claim 1 will be described below. A plastic bumper (produced by injection molding a polymer blend of polypropylene and ethylene-propylene rubber and applying a urethane paint) recovered from a car used for 5 years was reprocessed. In this case, the collected plastic bumper is pressed by a press preheated to 150 ° C for 1 hour.
It was flattened by pressing at a pressure of 00 kg / cm 2 for 30 seconds.
Thereafter, the coated surface was heated with a gas burner, the temperature of the plastic immediately below the coating film was increased to 190 ° C., and it was confirmed that a molten layer was formed. The coating film was immediately removed with a plate knife. By this removal treatment, the coating film could be completely removed from the bumper. A test piece was sampled from the bumper after removing the coating film, and the tensile strength and the elongation at break were measured. The results were 182 kgf / cm 2 and 240%, respectively.
【０００９】次に前記具体例と比較するために、同じ回
収バンパーを使用し、塗装されたままの状態で破砕した
材料を押出成形機を通して再生した。押出成形機にはメ
ッシュのスクリーンを装着し、樹脂温度を２３０℃で押
出した。押出物はシート状で押出し、前記具体例と同様
に試験片を採取し、引張強度と破断伸びを測定した結
果、それぞれ１４３kgf/cm2 、１１５％となり、前記具
体例に比べて大幅な物性低下が見られた。この原因は、
試験片の破断面に塗膜の存在が確認されたことから、塗
膜破片が異物として作用したことと、溶融、混練による
劣化と推定された。Next, for comparison with the above embodiment, the crushed material was recycled through an extruder as it was, using the same recovery bumper. The extruder was fitted with a mesh screen and extruded at a resin temperature of 230 ° C. The extrudate extruded in sheet form, the collected examples as well as the test piece and the measurement results of the tensile strength at break elongation, next each 143kgf / cm 2, 115%, substantial lowering of physical properties in comparison to the Examples It was observed. This is because
Since the presence of the coating film was confirmed on the fracture surface of the test piece, it was presumed that the coating film fragment acted as a foreign substance, and that deterioration was caused by melting and kneading.
【００１０】次に請求項２に対する具体例を説明する。
５年間使用した車から回収したウレタン塗装ポリプロピ
レン製バンパーから注意深く塗膜とプラスチック部分を
採取し、動的弾性率Ｅ′を測定した結果を図２に示す。
図２より塗膜の動的弾性率は常温（２０℃）から徐々に
低下し、８０℃で約２×１０7 Paとゴム状態となり、そ
の後ほぼ一定の値を示した。一方ポリプロピレンの動的
弾性率は常温（２０℃）で８×１０8 Paと高く、１５０
℃で１０8 Paまで低下し、それ以上の高温側では急激に
動的弾性率が低下し、軟化から溶融状態に至る。そこで
前記ウレタン塗装のポリプロピレンバンパーを、９０
℃、１２０℃、１５０℃の各温度に調整した空気加熱炉
中で３分間加熱し、塗膜がゴム状態になったところで、
直ちにワイヤブラシで塗膜を除去した。塗膜はワイヤブ
ラシ側にフィルム状で掻き取られ、プラスチック側には
塗膜が残らなかった。Next, a specific example of claim 2 will be described.
The coating film and the plastic part were carefully sampled from a urethane-coated polypropylene bumper collected from a car used for 5 years, and the results of measuring the dynamic elastic modulus E 'are shown in FIG.
As shown in FIG. 2, the dynamic elastic modulus of the coating film gradually decreased from room temperature (20 ° C.) and became a rubbery state at 80 ° C. of about 2 × 10 7 Pa, and thereafter showed a substantially constant value. On the other hand, the dynamic elastic modulus of polypropylene at room temperature (20 ° C.) is as high as 8 × 10 8 Pa,
At 10 ° C., the temperature drops to 10 8 Pa. At higher temperatures, the dynamic elastic modulus sharply decreases, and the temperature changes from softening to melting. Therefore, the urethane-coated polypropylene bumper is 90
℃, 120 ℃, heated for 3 minutes in an air heating furnace adjusted to each temperature of 150 ℃, when the coating film became a rubber state,
Immediately, the coating was removed with a wire brush. The coating film was scraped off in the form of a film on the wire brush side, and no coating film remained on the plastic side.
【００１１】[0011]
【発明の効果】以上詳細に説明した如く本発明の請求項
１によると、塗装プラスチックの塗膜直下のプラスチッ
クに薄い溶融層を作ることにより、軟弱層を形成させて
塗膜の剥離を容易とし、回収したプラスチックには、塗
膜等の異物が全く含有することなく、更に溶融・混練し
ないことから、再生時の物性低下を全く起こさせずに再
生プラスチック原料として使用することができる。According to the first aspect of the present invention, as described above in detail, a thin molten layer is formed on a plastic immediately below a coating film of a coating plastic to form a soft layer and facilitate the peeling of the coating film. Since the recovered plastic does not contain any foreign matter such as a coating film and is not further melted or kneaded, it can be used as a recycled plastic raw material without causing any deterioration in physical properties at the time of recycling.
【００１２】また本発明の請求項２は、ウレタン塗装し
たポリプロピレン成形品を、ウレタン塗料のゴム状温度
域で、更にポリプロピレンの軟化温度以下の範囲に加熱
して、ポリプロピレンから塗膜を除去するようにしたこ
とにより、回収したポリプロピレンには塗膜等の異物は
全く含有しない剥離処理が行なわれ、溶融・混練しない
ことから、再生時の物性低下を全く起こさせずに、再生
プラスチック原料として使用することができる。また本
発明の請求項３は、塗装プラスチックの塗膜除去操作の
前処理として塗装面を平坦化するようにしたので、ブレ
ート等による塗膜除去作業の容易化を図ることができ
る。[0012] Claim 2 of the present invention, the urethane polypropylene molded article, a rubber-like temperature range of urethane coating, is heated further to a range of less than the softening temperature of the polypropylene, so as to remove the coating from the polypropylene As a result, the recovered polypropylene is subjected to a peeling treatment containing no foreign matter such as a coating film at all, and is not melted or kneaded, so that it is used as a recycled plastic raw material without causing any deterioration in physical properties at the time of recycling. be able to. According to the third aspect of the present invention, since the painted surface is flattened as a pretreatment for the paint film removing operation of the painted plastic, the paint film removing operation by a plate or the like can be facilitated.
【図１】本発明の方法を実施する塗膜剥離処理手段の１
例を示す説明図である。FIG. 1 shows one of coating film peeling treatment means for carrying out the method of the present invention.
It is explanatory drawing which shows an example.
【図２】 本発明の請求項２におけるウレタン塗料とポ
リプロピレン剥離温度域の説明図である。FIG. 2 is an explanatory diagram of a urethane paint and a polypropylene peeling temperature range in claim 2 of the present invention.
１ 廃バンパー ２ 塗膜 ３ ガスバーナ ４ 火炎 ５ 塗膜の除去手段 ６ 塗膜屑 ７ 倣い手段 DESCRIPTION OF SYMBOLS 1 Waste bumper 2 Coating film 3 Gas burner 4 Flame 5 Coating removal means 6 Coating waste 7 Copying means
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ // Ｂ２９Ｋ 105:26 Ｂ２９Ｌ 31:20 (72)発明者 安藤 精持 名古屋市中村区岩塚町字高道１番地 三 菱重工業株式会社 名古屋研究所内 (72)発明者 田村 幸夫 名古屋市中村区岩塚町字高道１番地 三 菱重工業株式会社 名古屋研究所内 (72)発明者 木下 清 名古屋市中村区岩塚町字高道１番地 三 菱重工業株式会社 名古屋研究所内 (56)参考文献 実開 昭57−47324（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29B 17/00 Continuation of the front page (51) Int.Cl. 7 Identification symbol FI // B29K 105: 26 B29L 31:20 (72) Inventor Seiji Mochi 1 Takamichi Iwazuka-cho, Nakamura-ku, Nagoya-shi Inside the research institute (72) Inventor Yukio Tamura Nagoya City, Nakamura-ku, Iwatsuka-cho, Takamichi 1 Mitsuhashi Heavy Industries, Ltd. Company Nagoya Research Laboratories (56) References Jirakukai Sho 57-47324 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) B29B 17/00
Claims (4)
塗料からなる塗膜を形成した塗装プラスチック材の再生
処理方法において、 前記塗装プラスチック材を加熱して、前記塗膜直下の前
記熱可塑性プラスチック部材を溶融して 薄いプラスチッ
ク溶融層を形成させた後、同溶融層と塗膜を除去することを特徴とする塗装プラス
チック材の再生処理方法。 1. Thermosetting on a thermoplastic member
Recycling of painted plastic material with a paint film
In the treatment method, the coated plastic material is heated so that it is immediately below the coating film.
The coating plus, characterized in that the thermoplastic layer is melted to form a thin plastic layer, and then the molten layer and the coating are removed.
Reprocessing method of tic material.
の塗膜を除去する方法において、同成形品をウレタン塗
料のゴム状温度域で、更にポリプロピレンの軟化温度以
下の範囲に加熱して塗膜を除去することを特徴とする塗
装プラスチック材の再生処理方法。2. A method for removing a coating film of a urethane-coated polypropylene molded article, wherein the molded article is heated in a rubber-like temperature range of the urethane paint and further below a softening temperature of the polypropylene to remove the coating film. A method for reclaiming a coated plastic material .
処理として塗装面を平坦化することを特徴とする請求項
１または２に記載の塗装プラスチック材の再生処理方
法。3. A process for regeneration of coating plastic material according to claim 1 or 2, characterized in that flattening the painted surface as a pretreatment of the coating removal operation of painting plastics material.
バンパーであることを特徴とする請求項２に記載の塗装
プラスチック材の再生処理方法。 4. The method according to claim 1, wherein said coated plastic material is used for automobile parts.
The coating according to claim 2, which is a bumper.
A method for recycling plastic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3731193A JP3202385B2 (en) | 1993-02-03 | 1993-02-03 | Reprocessing of painted plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3731193A JP3202385B2 (en) | 1993-02-03 | 1993-02-03 | Reprocessing of painted plastic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06226742A JPH06226742A (en) | 1994-08-16 |
| JP3202385B2 true JP3202385B2 (en) | 2001-08-27 |
Family
ID=12494152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3731193A Expired - Fee Related JP3202385B2 (en) | 1993-02-03 | 1993-02-03 | Reprocessing of painted plastic |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3202385B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4605553B2 (en) * | 1998-09-28 | 2011-01-05 | 株式会社クラレ | Multilayer film |
| JP4523789B2 (en) * | 2003-10-31 | 2010-08-11 | パナソニック株式会社 | Metal film peeling apparatus and metal film peeling method |
| FR2897796B1 (en) * | 2006-02-27 | 2010-06-11 | Chantiers De Latlantique | PROCESS FOR REMOVING COATING, APPLICATION AND DEVICES IMPLEMENTING THE SAME |
| JP4953659B2 (en) | 2006-02-28 | 2012-06-13 | リンテック株式会社 | Protective sheet for urethane coatings for automobiles |
| JP2008272995A (en) * | 2007-04-27 | 2008-11-13 | Kyokuto Sangyo Kk | Lining releasing apparatus |
| CN105396844B (en) * | 2015-12-09 | 2017-09-01 | 浦江县乾坤工贸有限公司 | Offset plate cleaning device on a kind of automatic high temperature |
| CN107901277B (en) * | 2017-12-27 | 2019-09-06 | 台州金福桂再生资源利用有限公司 | A kind of bending waste plastic scrapes equipment |
-
1993
- 1993-02-03 JP JP3731193A patent/JP3202385B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06226742A (en) | 1994-08-16 |
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