JP3177373B2 - How to recycle painted resin products - Google Patents
How to recycle painted resin productsInfo
- Publication number
- JP3177373B2 JP3177373B2 JP5077794A JP5077794A JP3177373B2 JP 3177373 B2 JP3177373 B2 JP 3177373B2 JP 5077794 A JP5077794 A JP 5077794A JP 5077794 A JP5077794 A JP 5077794A JP 3177373 B2 JP3177373 B2 JP 3177373B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- coating film
- roll
- coated
- recycling
- 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
- 229920005989 resin Polymers 0.000 title claims description 110
- 239000011347 resin Substances 0.000 title claims description 110
- 238000000576 coating method Methods 0.000 claims description 83
- 239000011248 coating agent Substances 0.000 claims description 82
- 239000000463 material Substances 0.000 claims description 79
- 238000000034 method Methods 0.000 claims description 36
- 238000004064 recycling Methods 0.000 claims description 18
- 238000005096 rolling process Methods 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 238000010298 pulverizing process Methods 0.000 claims description 12
- 239000002390 adhesive tape Substances 0.000 claims description 8
- 239000008188 pellet Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 2
- 238000002203 pretreatment Methods 0.000 claims 2
- 238000000926 separation method Methods 0.000 claims 1
- 238000000465 moulding Methods 0.000 description 14
- 238000005453 pelletization Methods 0.000 description 9
- -1 polypropylene Polymers 0.000 description 7
- 238000003825 pressing Methods 0.000 description 7
- 239000004743 Polypropylene Substances 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 6
- 229920001155 polypropylene Polymers 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 238000011027 product recovery Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000007781 pre-processing Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 206010011906 Death Diseases 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
- B29B17/0042—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting for shaping parts, e.g. multilayered parts with at least one layer containing regenerated plastic
-
- 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
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
-
- 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
- B29B2017/0217—Mechanical separating techniques; devices therefor
-
- 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
-
- 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
-
- 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
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3044—Bumpers
-
- 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)
- 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、樹脂製品、例えば自動
車等の装飾及び緩衝等の機能部品として使用されるバン
パ、サイドモール等の塗装が施された塗装樹脂製品のリ
サイクル方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recycling a resin product, for example, a coated resin product such as a bumper or a side molding used as a functional part such as a decoration or a cushion for an automobile or the like.
【０００２】[0002]
【従来の技術】近年環境問題や資源再利用に対する関心
の高まりから樹脂製品のリサイクル化が叫ばれ、例えば
自動車産業分野においてもバンパ、サイドモール等の樹
脂製品を製造する際等に発生する工程内不良品及び廃車
から分離回収される樹脂製品のリサイクルが注目されて
いる。2. Description of the Related Art In recent years, the recycling of resin products has been called out due to an increase in environmental issues and interest in resource recycling. For example, even in the automotive industry, there is a problem in the process of producing resin products such as bumpers and side moldings. Attention has been focused on recycling resin products separated and recovered from defective products and end-of-life vehicles.
【０００３】この種のバンパ、サイドモール等の樹脂製
品は、外観及び品質向上のため製品の表面に塗装を施す
場合が多く、例えばバンパの表皮は、ポリプロピレン系
樹脂等の熱可塑性樹脂の樹脂素材上に塗膜が形成されて
いる。この塗膜は熱硬化性樹脂、例えばアミノポリエス
テル系、アミノアクリル系、ポリエステルウレタン系、
アクリルウレタン系樹脂であり、硬化反応前のこれら樹
脂は液体状であるが、焼き付け塗装工程により架橋構造
が付与される。これは強固で緻密な構造のため塗装が施
された樹脂バンパは優れた耐薬品性、耐熱性、耐擦り傷
性、耐候性及び表面光沢性を有する。[0003] In many cases, resin products such as bumpers and side moldings are coated on the surface of the product in order to improve the appearance and quality. For example, the skin of the bumper is made of a thermoplastic resin material such as polypropylene resin. A coating is formed on top. This coating film is a thermosetting resin, for example, an amino polyester type, an amino acrylic type, a polyester urethane type,
These are acrylic urethane-based resins, and these resins are in a liquid state before the curing reaction, but a crosslinked structure is provided by a baking coating process. This is because of its strong and dense structure, the coated resin bumper has excellent chemical resistance, heat resistance, scratch resistance, weather resistance and surface gloss.
【０００４】しかし、このバンパを粉砕し、ペレット化
して再生材料を得ると樹脂製品の素材を構成していたポ
リプロピレン系樹脂材料に塗膜片が混入し、この塗膜片
が混在するポリプロピレン系樹脂材料を用いた成形加工
では、塗膜片が溶融樹脂の流動性を阻害し、樹脂製品に
“焼け”、“ウェルドマーク”、“気泡”等の成形不良
を発生させる原因となり、かつ樹脂製品の表面に浮き出
た塗膜片は樹脂製品の外観性を損なう等の不具合があ
る。However, when the bumper is pulverized and pelletized to obtain a recycled material, a piece of the coating film is mixed with the polypropylene resin material constituting the material of the resin product, and the polypropylene resin mixed with the coating film piece is mixed. In the molding process using materials, the coating film pieces impede the fluidity of the molten resin, causing molding defects such as "burn", "weld mark", and "bubbles" in the resin product, and The coating film pieces that emerge on the surface have problems such as impairing the appearance of the resin product.
【０００５】また、塗膜片とベースレジンとなるポリプ
ロピレン系樹脂との間にはほとんど相互作用がないた
め、この塗膜片が再生樹脂中の混練一体化を阻止して樹
脂製品の機械的物性を著しく低下させる。[0005] Further, since there is almost no interaction between the coated film piece and the polypropylene resin serving as the base resin, the coated film piece prevents kneading and unifying in the regenerated resin, and the mechanical properties of the resin product are reduced. Is significantly reduced.
【０００６】このことから塗装処理された樹脂製品をリ
サイクルする場合には塗膜除去が必要になる。For this reason, it is necessary to remove the coating when recycling the coated resin product.
【０００７】塗膜除去方法としては、社団法人自動車技
術会編集・発行の自動車技術Ｖｏｌ．４６．Ｎｏ．５，
１９９２．第３〜９ページに開示されるように機械的、
物理的及び化学的方法に分類される。[0007] As a method of removing a coating film, there is a method disclosed in Automotive Technology Vol. 46. No. 5,
1992. Mechanical as disclosed on pages 3-9,
Classified into physical and chemical methods.
【０００８】機械的塗膜除去方法は、例えば圧搾空気を
使用して微粒子状の研掃材を樹脂製品上に形成される塗
膜表面に吹き付けて塗膜や付着物を破壊して除去するシ
ョットブラスト法や樹脂製品を微粉砕した後、加熱溶融
下でスクリーンメッシュにより濾過して溶融せずに混在
している塗膜片を除去するスクリーンメッシュ法等があ
る。[0008] The mechanical coating film removing method is, for example, a method in which fine particles of abrasive are sprayed onto the surface of a coating film formed on a resin product by using compressed air to destroy and remove the coating film and attached matter. There are a blast method and a screen mesh method in which a resin product is finely pulverized and then filtered through a screen mesh under heating and melting to remove mixed coating film pieces without melting.
【０００９】ショットブラスト法は、摩擦、衝撃等によ
り塗膜を除去することから毒性、環境安全性に優れる反
面、多大な処理時間を要し、塗膜除去効率も充分でな
く、特に湾曲部の処理が困難である。スクリーンメッシ
ュ法は濾過により塗膜片を除去することから毒性、環境
安全性に優れるが、スクリーンメッシュの目詰まりが起
こり、押出圧力が著しく増加して押出量が減少し生産量
が低下すると共に塗膜片の除去効率も充分でなく、スク
リーンメッシュでの閉塞による生産効率の低下を回避す
るためのスクリーンメッシュ交換を要する等の不具合が
ある。The shot blasting method is excellent in toxicity and environmental safety because the coating film is removed by friction, impact, etc., but requires a large amount of processing time, and the coating film removing efficiency is not sufficient. Processing is difficult. The screen mesh method is excellent in toxicity and environmental safety because the coating film pieces are removed by filtration.However, clogging of the screen mesh occurs, the extrusion pressure increases significantly, the output decreases, the production decreases, and the coating decreases. The removal efficiency of the film pieces is not sufficient, and there is a problem that the screen mesh needs to be replaced in order to avoid a decrease in production efficiency due to blockage by the screen mesh.
【００１０】物理的塗膜除去方法は、ハロゲン系溶剤や
各種の有機溶剤を用い、塗膜と素材との界面への溶剤浸
透及び溶剤による塗膜の膨潤現象を利用して塗膜を除去
するものであり、環境安全性に劣り、かつ塗膜除去効率
や処理能力が比較的低く、更に素材まで変質させる虞れ
がある。The method of physically removing a coating film uses a halogen-based solvent or various organic solvents, and removes the coating film by utilizing solvent penetration into the interface between the coating film and the material and swelling of the coating film by the solvent. It is inferior in environmental safety, has relatively low coating film removal efficiency and processing ability, and may be deteriorated to a material.
【００１１】これら機械的及び物理的塗膜除去法は塗膜
除去効率が低いことから、これらの方法により得られた
再生樹脂材料を用いた樹脂製品は、製品の外観性及び機
械的物性が好ましくなく、用途範囲が大きく制限され
る。Since these mechanical and physical coating film removal methods have low coating film removal efficiencies, resin products using the recycled resin material obtained by these methods have favorable appearance and mechanical properties of the products. And the range of application is greatly limited.
【００１２】化学的塗膜除去方法は、例えば有機塩を含
有したエタノール水混合溶液で、塗膜樹脂の架橋点近傍
のエーテル結合を切断することによって塗膜を化学的に
分解除去する有機塩法がある。The chemical coating film removing method is, for example, an organic salt method in which a coating film is chemically decomposed and removed by cutting an ether bond near a crosslinking point of the coating resin with a mixed solution of ethanol and water containing an organic salt. There is.
【００１３】この方法は、排水処理等の２次処理上の問
題があり、かつ処理効率が低く、効率的でない等の不具
合がある。This method has problems in secondary treatment such as wastewater treatment, and has problems such as low treatment efficiency and inefficiency.
【００１４】また、樹脂製品の塗膜を除去する装置とし
ては、特開平５−３３７９４１号公報に開示され、かつ
図７に正面説明図、図８にそのＡ−Ａ線断面図を示す合
成樹脂表面の剥離装置が提案されている。An apparatus for removing a coating film of a resin product is disclosed in Japanese Patent Application Laid-Open No. 5-337941, and FIG. 7 is a front view, and FIG. 8 is a sectional view taken along line AA of FIG. Surface peeling devices have been proposed.
【００１５】この剥離装置は、一対の搬送ローラ２１で
樹脂製品、例えばサイドモール２２を発泡性の合成樹脂
からなる回転体２３、２４間に移送し、かつサイドモー
ル２２の搬送速度Ｖを回転体２３及び２４の回転周速度
よりも遅く設定することによりサイドモール２２の塗膜
２２ａ及び両面テープ２２ｂに対して切削及び高い摩擦
力を作用させて、サイドモール２２の表面の塗膜２２ａ
及び両面テープ２２ｂを切削剥離させ、かつ一対の搬送
ローラ２１によってサイドモール２２を外部に排出する
ものである。In this peeling apparatus, a resin product, for example, a side molding 22 is transported between rotating bodies 23 and 24 made of foamable synthetic resin by a pair of transporting rollers 21, and the transport speed V of the side molding 22 is increased by the rotating body. By setting the rotational peripheral speed to be lower than the rotational peripheral speeds of the side moldings 22 and 24, cutting and high frictional force are applied to the coating 22 a of the side molding 22 and the double-sided tape 22 b, and the coating 22 a on the surface of the side molding 22
Further, the double-sided tape 22b is cut and peeled, and the side molding 22 is discharged to the outside by the pair of transport rollers 21.
【００１６】この装置は回転する発泡性の合成樹脂から
なる回転体２３、２４に樹脂製品を接触させることから
回転体２３、２４が脆性破壊され、粉塵を発生させるこ
とから作業環境上好ましくなく、また折曲乃至湾曲した
樹脂製品には適しない等の不具合がある。This device is made of a rotating foaming synthetic resin.
Since the rotating bodies 23 and 24 are brought into contact with the rotating bodies 23 and 24, the rotating bodies 23 and 24 are brittlely broken and generate dust, which is not preferable in working environment, and is not suitable for bent or curved resin products. There is a defect.
【００１７】[0017]
【発明が解決しようとする課題】従って、本発明の目的
は、塗膜の除去効率、環境安全性及び処理能力に優れた
高品質のリサイクル樹脂製品を得ることを可能にする塗
装樹脂製品のリサイクル方法を提供することにある。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to recycle a coated resin product which makes it possible to obtain a high quality recycled resin product having excellent coating film removal efficiency, environmental safety and processing ability. It is to provide a method.
【００１８】[0018]
【課題を解決するための手段】上記目的を達成する本発
明による塗装樹脂製品のリサイクル方法は、塗装が施さ
れた樹脂製品を数分割に切断加工せしめる前処理工程
と、前処理工程で得られた切断材を対向配設された樹脂
素材側ロール及び該樹脂素材側ロールの周速度より大な
る周速度の塗膜側ロールを具備し、かつ該塗膜側ロール
及び樹脂素材側ロールの少なくとも一方のロールの端縁
近傍が、端縁へ移行するに従って大径になるテーパ状で
あるロール装置によって圧延し、かつ樹脂素材と塗膜と
の間に剪断ズリ応力を加えて樹脂素材から塗膜を剥離す
るロール圧延処理工程と、ロール圧延処理工程で塗膜を
剥離した樹脂素材を粉砕して粉砕材を得る粉砕処理工程
とを有するものである。A method for recycling a coated resin product according to the present invention, which achieves the above objects, is obtained by a pretreatment step of cutting a coated resin product into several parts and a pretreatment step. Cutting material facing opposite the resin
Greater than the peripheral speed of the material side roll and the resin material side roll
A roll device having a coating-side roll having a peripheral speed of at least one , and having a tapered shape in which the vicinity of the edge of at least one of the coating-side roll and the resin material-side roll becomes larger in diameter as moving toward the edge. Rolled by, and roll-rolling process to remove the coating from the resin material by applying shear shear stress between the resin material and the coating, and pulverize the resin material that peeled the coating in the roll-rolling process And a pulverizing step of obtaining a pulverized material.
【００１９】[0019]
【実施例】以下本発明による塗装樹脂製品のリサイクル
方法を、自動車樹脂部品の中でも大物部品である塗装が
施された樹脂バンパを回収し、リサイクルする場合を例
に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method of recycling a coated resin product according to the present invention will be described below by taking as an example a case where a coated resin bumper, which is a large component among automobile resin components, is collected and recycled.
【００２０】図１は、本実施例における塗装樹脂製品の
リサイクル方法の各工程を示す概要説明図であり、樹脂
バンパの製造及び組立の際等に発生する工程内不良品、
廃車等から分離回収する樹脂製品回収工程ａと、回収さ
れた樹脂バンパを平板形状または縦割り状に数分割に切
断加工する前処理工程ｂと、前処理工程ｂで得られた切
断材からロール装置による圧延によって塗膜を剥離する
ロール圧延処理工程ｃと、塗膜を剥離した樹脂素材を粉
砕する粉砕処理工程ｄと、粉砕処理工程ｄで得られた粉
砕材をペレット化するペレット化工程ｅと、ペレット化
工程ｅで得られたペレットを材料としで製品化する成形
工程ｆとを有している。FIG. 1 is a schematic explanatory view showing each step of a method for recycling a coated resin product in the present embodiment, and shows defective products generated during the production and assembly of a resin bumper.
A resin product recovery step a for separating and recovering from a scrap car, etc., a pre-processing step b for cutting the recovered resin bumper into several pieces into a flat plate shape or a vertically divided shape, and a roll from the cut material obtained in the pre-processing step b. A roll rolling processing step c for peeling off the coating film by rolling by a device, a crushing processing step d for crushing the resin material from which the coating film has been peeled off, and a pelletizing step e for pelletizing the crushed material obtained in the crushing processing step d. And a molding step f in which the pellets obtained in the pelletizing step e are used as a material to produce a product.
【００２１】次に各工程について順次説明する。図１に
おける樹脂製品回収工程ａに示す符号ｗは工程内不良品
及び廃車等から取り外して回収し、金属部分を取り除い
た塗装樹脂バンパであり、このバンパｗは、ポリプロピ
レン系樹脂等の熱可塑性樹脂からなる樹脂素材上にアミ
ノポリエステル系、アミノアクリル系、ポリエステルウ
レタン系、アクリルウレタン系樹脂等の熱硬化性樹脂に
よる塗膜が形成された塗装樹脂製品である。Next, each step will be described sequentially. The symbol w shown in the resin product recovery step a in FIG. 1 is a painted resin bumper which is removed and recovered from in-process defective products and end-of-life vehicles and metal parts are removed. The bumper w is a thermoplastic resin such as a polypropylene resin. This is a coated resin product in which a coating film of a thermosetting resin such as an aminopolyester-based, aminoacryl-based, polyester-urethane-based, or acrylic-urethane-based resin is formed on a resin material composed of:
【００２２】樹脂製品回収工程ａで回収され、金属部分
が取り除かれたバンパｗは、前処理工程ｂにおいて次の
ロール圧延処理工程ｃでの塗膜の除去効率を良好にする
ために平板形状、または縦割り状に切断加工される。こ
の加工は、例えば図２（ａ）に斜線ｗａで示すリブ等の
突起を含まない上面部、前面部、側面部等の比較的平板
形状部分ｗａごとに切断して、必要に応じて更に切断し
て短冊状の平板状材１ａを得ても良いし、図２（ｂ）に
ｗａ′で示すように切断して複数の縦割り状材１ａ′を
得るようにしてもよい。The bumper w recovered in the resin product recovery step a and from which the metal parts have been removed is formed into a flat plate shape in order to improve the efficiency of removing the coating film in the next roll rolling step c in the pretreatment step b. Alternatively, it is cut into a vertically divided shape. This processing is performed, for example, by cutting each relatively flat plate-shaped portion wa such as an upper surface portion, a front surface portion, and a side surface portion that does not include a projection such as a rib indicated by oblique lines wa in FIG. Thus, a strip-shaped plate-shaped member 1a may be obtained, or a plurality of vertically-slit members 1a 'may be obtained by cutting as shown by wa' in FIG. 2B.
【００２３】バンパｗから切断材１を得るには、図３に
要部断面斜視図を示すようにバンパｗの凹部に嵌合して
バンパｗを所定位置に係合保持する支持部材１０に保持
させた状態でバンパｗをカッタ１１で切断することによ
り容易に得られる。In order to obtain the cut material 1 from the bumper w, as shown in FIG. 3, a supporting member 10 which fits into a concave portion of the bumper w and engages and holds the bumper w at a predetermined position as shown in a perspective view of a main part. It can be easily obtained by cutting the bumper w with the cutter 11 in the state where the bumper w is cut.
【００２４】次に前処理工程ｂで得られた切断材１から
塗膜２を剥離するロール圧延処理工程ｃについて説明す
る。Next, the roll rolling processing step c for peeling the coating film 2 from the cut material 1 obtained in the preprocessing step b will be described.
【００２５】このロール圧延処理工程ｃで用いられるロ
ール装置１２は図１に示すように、対向配設される金属
製であって、外周面が鏡面仕上げ、またはクロームメッ
キが施される樹脂素材側ロール１３及び塗膜側ロール１
４を有している。As shown in FIG. 1, the roll device 12 used in the roll rolling process step c is made of metal which is disposed to face each other, and has a mirror-finished outer peripheral surface or a chrome-plated resin material side. Roll 13 and coating side roll 1
Four.
【００２６】樹脂素材側ロール１３と塗膜側ロール１４
とは、塗膜２表面に圧接する塗膜側ロール１４の周速度
が樹脂素材３表面に圧接する樹脂素材側ロール１３の周
速度に対して大なるように回転駆動される。The resin material side roll 13 and the coating film side roll 14
That is , the rotation is driven so that the peripheral speed of the coating film side roll 14 pressing against the surface of the coating film 2 is higher than the peripheral speed of the resin material side roll 13 pressing against the surface of the resin material 3.
【００２７】従って樹脂素材側ロール１３と塗膜側ロー
ル１４との間に供給された平板状材１は両ロール１３、
１４の押圧力によって圧延され、かつロール１３、１４
間の相対的な周速度の差に基づいて、樹脂素材３と塗膜
２との間に剪断ズリ応力が加わり、樹脂素材３から塗膜
２が剥離する。Therefore, the flat material 1 supplied between the resin material side roll 13 and the coating film side roll 14 is
Rolls 13 and 14
A shear shear stress is applied between the resin material 3 and the coating film 2 based on the relative peripheral speed difference therebetween, and the coating film 2 peels from the resin material 3.
【００２８】樹脂素材側ロール１３は、図４（ａ）に正
面図、同図（ｂ）にその側面図を示すように、ロール１
３の端縁近傍１３ａが、その端縁１３ｂへ移行するに従
って大径になるテーパ状であって、中央部の径１３ｃに
対し端縁１３ｂにおける径１３ｄが大なるように形成さ
れている。As shown in the front view of FIG. 4A and the side view of FIG.
3 has a tapered shape in which the diameter near the edge 13a increases toward the edge 13b, and the diameter 13d at the edge 13b is larger than the diameter 13c at the center.
【００２９】同様に塗膜側ロール１４も図４（ａ）に正
面図、同図（ｂ）に側面図を示すように、ロール１４の
端縁近傍１４ａがその端縁１４ｂへ移行するに従って大
径になるテーパ状であって、これらロール１３、１４間
による圧延により、切断材１の両側端中央部が、外方に
迫り出して変形するが、両ロール１３、１４の端部近傍
１３ａ、１４ａが端縁１３ｂ、１４ｂへ移行するに従っ
て大径になるテーパ形状に形成されることから、切断材
１の両側端を押圧する両ロール１３、１４の端縁近傍１
３ａ及び１４ａ間の間隙が小となり、切断材１の両側端
においても充分な両ロール１３及び１４による押圧力が
確保される。従って切断材１の両端においても充分な剪
断ズリ応力が作用して塗膜２の剥離が達成される。Similarly, as shown in the front view of FIG. 4 (a) and the side view of FIG. 4 (b), the roll 14 near the edge of the roll 14 becomes larger as the edge 14a of the roll 14 moves to the edge 14b. Rolling between the rolls 13 and 14 causes the center of both ends of the cut material 1 to protrude outward and deform, but the rolls 13 and 14 have the vicinity of the end 13a, Since the tape 14a is formed in a tapered shape having a larger diameter as it moves to the edges 13b, 14b, the vicinity of the edges of both the rolls 13, 14 pressing both side edges of the cut material 1
The gap between 3a and 14a becomes small, and sufficient pressing force by both rolls 13 and 14 is secured even at both side ends of the cut material 1 . Therefore, a sufficient shear shear stress acts on both ends of the cut material 1 , and peeling of the coating film 2 is achieved.
【００３０】なお、樹脂素材側ロール１３及び塗膜側ロ
ール１４の内一方のローラ端縁近傍１３ａまたは１４ａ
のみを端縁へ移行するに従って大径になるテーパ状に形
成することも可能である。In addition, one of the resin material side roll 13 and the coating film side roll 14 near one roller edge 13a or 14a
It is also possible to form only the taper shape whose diameter increases as it moves to the edge.
【００３１】なお、図１中の符号１５は、塗膜側ロール
１４の外周面に摺接してロール１４表面に付着する塗膜
２を掻き取るブラシやスクレーパ等である。Reference numeral 15 in FIG. 1 denotes a brush, a scraper, or the like that scrapes the coating film 2 attached to the surface of the roll 14 by slidingly contacting the outer peripheral surface of the coating film side roll 14.
【００３２】図５はロール装置１２の他の実施例を示す
説明図であり、図１と対応する部分に同一符号を付する
ことで詳細な説明は省略するが、塗膜側ロール１４の外
周を弾性部材、例えばラバー１４ｅで被覆することによ
り、塗膜側ロール１４と切断材１の塗膜２との間の摩擦
係数の増大を図り、樹脂素材３と塗膜２との間に加わる
剪断ズリ応力を確保して塗膜２の剥離を良好にすると共
に、切断材１への押圧に起因するラバー１４ｅの変形に
よって塗膜側ロール１４への塗膜２の付着を回避する機
能を有し、かつ切断材１を供給する際の噛み込みを容易
にして作業性の向上を図るものである。FIG. 5 is an explanatory view showing another embodiment of the roll device 12. The same reference numerals are given to portions corresponding to those in FIG. Is coated with an elastic member, for example, a rubber 14e, thereby increasing the coefficient of friction between the coating film-side roll 14 and the coating film 2 of the cutting material 1 , and the shear applied between the resin material 3 and the coating film 2 It has a function to secure the shear stress to make the coating film 2 peelable and to prevent the coating film 2 from adhering to the coating film side roll 14 due to deformation of the rubber 14e caused by pressing against the cutting material 1. In addition, it is intended to improve the workability by facilitating the biting when the cutting material 1 is supplied.
【００３３】また図６は、ロール装置１２の他の実施例
を示す説明図であって、図１と対応する部位に同一符号
を付することで詳細な説明は省略するが、塗膜側ロール
１４及び樹脂素材側ロール１３の下流位置に樹脂素材３
及び塗膜２を挾持して搬送する一対の搬送ロール１６、
１７を設け、かつ一方の搬送ロール１６を隔てて対向す
る粘着テープ繰出リール１８及び粘着テープ繰出リール
１８から繰出される粘着テープ２０を巻き取る粘着テー
プ回収リール１９を配設して、搬送ロール１６によって
繰出リール１８から繰出される粘着テープ２０を塗膜２
に圧接して塗膜２を粘着回収する塗膜回収手段を設けて
ある。FIG. 6 is an explanatory view showing another embodiment of the roll device 12. The same reference numerals are given to portions corresponding to those in FIG. 14 and the resin material 3 at the downstream position of the resin material side roll 13.
A pair of transport rolls 16 for sandwiching and transporting the coating film 2;
17, and an adhesive tape supply reel 18 facing the other one of the transfer rollers 16 and an adhesive tape collecting reel 19 for winding the adhesive tape 20 fed from the adhesive tape supply reel 18 are disposed. The adhesive tape 20 fed from the feeding reel 18 by the coating film 2
There is provided a coating film collecting means for pressing and recovering the coating film 2 by adhesion.
【００３４】樹脂素材３に付着する剥離した塗膜２を樹
脂素材３から除去する手段として、回転駆動するブラシ
を樹脂素材３に圧接したり、圧搾空気を吹き付ける等適
宜手段を配設することが可能である。As means for removing the peeled coating film 2 adhered to the resin material 3 from the resin material 3, appropriate means such as pressing a rotating brush against the resin material 3 or blowing compressed air may be provided. It is possible.
【００３５】ロール圧延処理工程ｃで塗膜２が剥離さ
れ、圧延された樹脂素材３は次の粉砕処理工程ｄにおい
てシュレッダ等で粉砕され、粉砕材４となる。The coating material 2 is peeled off in the roll rolling step c, and the rolled resin material 3 is pulverized by a shredder or the like in the next pulverizing step d to become the pulverized material 4.
【００３６】粉砕材４は続くペレット化工程ｅにおいて
押出機へ供給される。押出機は、例えばホッパーに投入
された粉砕材４をスクリューの回転によってバレル内を
前進させ、かつバンドヒータ等で加熱し、バレル内を前
進する間に溶融させてダイから押し出して一定形状のペ
レット５を製造する。この際、バレルの先端部に設けら
れたスクリーンメッシュにより残存する塗膜片を除去す
る。なお、このスクリーンメッシュを自動的に交換可能
とすれば更に処理能力を上げ生産性を向上させることが
できる。The pulverized material 4 is supplied to an extruder in a subsequent pelletizing step e. The extruder, for example, advances the pulverized material 4 put into the hopper in the barrel by rotation of a screw, and heats it with a band heater or the like, melts it while advancing in the barrel, and extrudes it from the die to form pellets of a certain shape. 5 is manufactured. At this time, the remaining coating film pieces are removed by a screen mesh provided at the tip of the barrel. If the screen mesh can be automatically replaced, the processing capacity can be further increased and the productivity can be improved.
【００３７】ペレット化工程ｅによって得られたペレッ
ト５は次の成形工程ｆにおいて必要に応じてバージンポ
リプロピレン等の樹脂から製造されたペレットが加えら
れ、再びバンパ等の樹脂製品となる。To the pellets 5 obtained in the pelletizing step e, pellets made of a resin such as virgin polypropylene are added if necessary in the next molding step f, and the pellets again become resin products such as bumpers.
【００３８】上記実施例では粉砕処理工程ｄにおいて粉
砕された樹脂素材からなる粉砕材５をペレット化工程ｅ
で加熱溶融してペレット化する際、スクリーンメッシュ
によって残存する塗膜片を除去したが、ペレット化工程
ｅに代えて、粉砕処理工程ｅで得られた粉砕材をピンミ
ルや比重分離機等の分離装置で樹脂素材を構成していた
部分と塗膜を構成していた部分とに分別することも可能
であり、ペレット化に比較して溶融、押し出し等の工
数、コストの削減を図り得ることも可能である。In the above embodiment, the pulverized material 5 made of the resin material pulverized in the pulverizing step d is formed into a pelletizing step e.
When heating to melt and pelletize, the remaining coating film pieces were removed by a screen mesh. Instead of the pelletizing step e, the pulverized material obtained in the pulverizing step e was separated by a pin mill or a specific gravity separator. It is also possible to separate the part that made up the resin material and the part that made up the coating film with the device, and it can also reduce the number of steps such as melting and extrusion and cost compared to pelletizing. It is possible.
【００３９】[0039]
【発明の効果】以上説明した本発明による塗装樹脂製品
のリサイクル方法によれば、塗装が施された樹脂製品を
ロール装置への供給を容易にするために、適当な大きさ
に数分割に切断加工し、この切断材を端縁近傍が端縁へ
移行するに従って大径になるテーパ状であって、回転周
速度の異なる塗膜側ロール及び樹脂素材側ロールを具備
するロール装置によって圧延し、かつ樹脂素材と塗膜と
の間に剪断ズリ応力を加えて樹脂素材から塗膜を剥離す
ることから、粉砕、加熱せずにロール装置によって平板
状材の側端を含む全面に亘る塗膜と樹脂素材との間に剪
断ズリ応力を加えることにより塗膜を分離することがで
き、塗膜の除去効率の極めて高い高品質のリサイクル樹
脂製品が生産性に優れ、かつ安価に得られ、更に従来の
塗膜除去方法に比べ、溶剤等を用いる必要がないことか
ら毒性がなく、環境安全性に優れ、かつ処理能力に優れ
る等本発明特有の効果を有し、広分野の塗装樹脂製品の
リサイクルに貢献すること大なるものである。According to the method for recycling a coated resin product according to the present invention described above, the coated resin product is cut into several pieces of an appropriate size in order to facilitate supply to a roll device. The cut material is rolled by a roll device having a coating side roll and a resin material side roll having a tapered shape having a large diameter as the vicinity of the edge shifts to the edge, and having different rotational peripheral speeds, And since the coating film is peeled off from the resin material by applying shear shear stress between the resin material and the coating film, the coating film over the entire surface including the side edges of the plate-like material by a roll device without crushing and heating. By applying shear shear stress to the resin material, the coating film can be separated, and a high-quality recycled resin product with extremely high coating film removal efficiency can be obtained with excellent productivity and at low cost. Compared to the method of removing paint film It has no peculiarity because it does not require the use of solvents, etc., and has the unique effects of the present invention, such as being excellent in environmental safety and processing ability, and greatly contributing to the recycling of painted resin products in a wide range of fields. It is.
【図１】本発明における塗装樹脂製品のリサイクル方法
の一実施例を示す概要説明図である。FIG. 1 is a schematic explanatory view showing one embodiment of a method for recycling a coated resin product according to the present invention.
【図２】同じく、本実施例における塗装樹脂製品のリサ
イクル方法における前処理工程の説明図である。FIG. 2 is an explanatory view of a pretreatment step in a method for recycling a coated resin product according to the present embodiment.
【図３】同じく、前処理工程の説明図である。FIG. 3 is an explanatory view of a pretreatment step.
【図４】同じく、ロール圧延処理工程の説明図である。FIG. 4 is an explanatory view of a roll rolling process step.
【図５】同じく、ロール圧延処理工程の説明図である。FIG. 5 is an explanatory view of a roll rolling process step.
【図６】同じく、ロール圧延処理工程の説明図である。FIG. 6 is also an explanatory view of a roll rolling processing step.
【図７】従来の塗膜剥離装置の概要説明図である。FIG. 7 is a schematic explanatory view of a conventional coating film peeling apparatus.
【図８】図７におけるＡ−Ａ線断面図である。FIG. 8 is a sectional view taken along line AA in FIG. 7;
ａ 樹脂製品回収工程 ｂ 前処理工程 ｃ ロール圧延処理工程 ｄ 粉砕処理工程 ｅ ペレット化工程 ｆ 成形工程 ｗ バンパ ｗａ、ｗａ′ 板状部分 １ 切断材 ２ 塗膜 ３ 樹脂素材 ４ 粉砕材 ５ ペレット １０ 支持部材 １１ カッタ １２ ロール装置 １３ 樹脂素材側ロール １４ 塗膜側ロール １４ａ ラバー １６ 搬送ロール １７ 搬送ロール ２０ 粘着テープ a resin product recovery step b pretreatment step c roll rolling step d pulverization step e pelletizing step f molding step w bumper wa, wa 'plate-like part 1 cutting material 2 coating film 3 resin material 4 pulverizing material 5 pellet 10 support Member 11 Cutter 12 Roll device 13 Resin material side roll 14 Coating side roll 14a Rubber 16 Transport roll 17 Transport roll 20 Adhesive tape
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平５−337941（ＪＰ，Ａ) 特開 平５−254298（ＪＰ，Ａ) 特開 昭62−35809（ＪＰ，Ａ) 特開 平５−269743（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29B 17/00 - 17/02 C08J 11/00 - 11/28 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-337794 (JP, A) JP-A-5-254298 (JP, A) JP-A-62-235809 (JP, A) JP-A-5-35809 269743 (JP, A) (58) Field surveyed (Int. Cl. 7 , DB name) B29B 17/00-17/02 C08J 11/00-11/28
Claims (8)
工せしめる前処理工程と、前処理工程で得られた切断材
を対向配設された樹脂素材側ロール及び該樹脂素材側ロ
ールの周速度より大なる周速度の塗膜側ロールを具備
し、かつ該塗膜側ロール及び樹脂素材側ロールの少なく
とも一方のロールの端縁近傍が、端縁へ移行するに従っ
て大径になるテーパ状であるロール装置によって圧延
し、かつ樹脂素材と塗膜との間に剪断ズリ応力を加えて
樹脂素材から塗膜を剥離するロール圧延処理工程と、ロ
ール圧延処理工程で塗膜を剥離した樹脂素材を粉砕して
粉砕材を得る粉砕処理工程とを有することを特徴とする
塗装樹脂製品のリサイクル方法。1. A pre-treatment step of cutting a coated resin product into several parts, and a resin material-side roll and a resin material-side roller provided with the cut material obtained in the pre-treatment step facing each other .
Equipped with a coating-side roll with a peripheral speed greater than the peripheral speed of the
And and at least the edge near one of the rolls of the coating film-side roll and a resin material side roll, rolled by a roll device is tapered to become larger in diameter in accordance with the process proceeds to the edge, and resin materials and coating A roll rolling treatment step of applying a shear shear stress between the resin material and peeling off the coating film from the resin material, and a pulverizing treatment step of pulverizing the resin material from which the coating film has been peeled off in the roll rolling treatment step to obtain a pulverized material A method for recycling coated resin products, characterized in that:
平板形状部分毎に切断して切断材を得る請求項１の塗装
樹脂製品のリサイクル方法。2. The method for recycling a coated resin product according to claim 1, wherein in the pretreatment step, the resin product is cut into relatively flat plate-shaped portions to obtain a cut material.
タで切断して切断材を得る請求項１または２の塗装樹脂
製品のリサイクル方法。3. The method for recycling a coated resin product according to claim 1, wherein the resin product is engaged with and held by the support member and cut by a cutter to obtain a cut material.
ずれか１つの塗装樹脂製品のリサイクル方法。4. The method for recycling a coated resin product according to claim 1, wherein the cut material has a strip shape.
れている請求項１〜４のいずれか１つの塗装樹脂製品の
リサイクル方法。5. The method for recycling a coated resin product according to claim 1, wherein the outer periphery of the coating film side roll is covered with an elastic member.
ール及び樹脂素材側ロールの下流位置で樹脂素材及び塗
膜を挾持して搬送する一対の搬送ロールを有し、かつ一
方の搬送ロールが粘着テープ繰出リールから繰出される
粘着テープを塗膜に圧接して塗膜を粘着回収する請求項
１〜５のいずれか１つの塗装樹脂製品のリサイクル方
法。6. A roll device having a pair of transport rolls for nipping and transporting a resin material and a coating film at a downstream position of the coating material side roll and the resin material side roll which are disposed opposite to each other, and one of the transport rollers. The method for recycling a coated resin product according to any one of claims 1 to 5, wherein the roll is pressure-contacted with an adhesive tape fed from an adhesive tape feeding reel to the coated film to recover the coated film.
熱溶融し、かつスクリーンメッシュにより残存する塗膜
片を濾別除去してペレット化するペレット化工程を有す
る請求項１〜６のいずれか１つの塗装樹脂製品のリサイ
クル方法。7. The method according to claim 1, further comprising a step of heating and melting the pulverized material obtained by pulverizing in the pulverizing treatment step, and filtering and removing the remaining coating film pieces by a screen mesh to form a pellet. How to recycle any one of the painted resin products.
を分離装置で樹脂素材を構成していた部分と塗膜を構成
していた部分とに分離する請求項１〜６のいずれか１つ
の塗装樹脂製品のリサイクル方法。8. The method according to claim 1, wherein the pulverized material obtained by the pulverization in the pulverization step is separated into a portion constituting the resin material and a portion constituting the coating film by a separation device. How to recycle one painted resin product.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5077794A JP3177373B2 (en) | 1994-03-22 | 1994-03-22 | How to recycle painted resin products |
| EP19940308204 EP0652093B1 (en) | 1993-11-08 | 1994-11-08 | Method and apparatus for peeling coating from coated plastics and method for recycling plastics |
| US08/337,436 US5788811A (en) | 1993-11-08 | 1994-11-08 | Method and apparatus for peeling coating from coated plastics and method for recycling plastics |
| KR1019940029153A KR100308849B1 (en) | 1993-11-08 | 1994-11-08 | Method and apparatus for peeling coating film from painted plastics |
| DE69424500T DE69424500T2 (en) | 1993-11-08 | 1994-11-08 | Method and device for separating and peeling off a film laminated on a plastic carrier material, and method for recycling such plastic carrier material |
| US09/008,830 US6051168A (en) | 1993-11-08 | 1998-01-20 | Method and apparatus for peeling coating from coated plastics and method for recylcling plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5077794A JP3177373B2 (en) | 1994-03-22 | 1994-03-22 | How to recycle painted resin products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07256643A JPH07256643A (en) | 1995-10-09 |
| JP3177373B2 true JP3177373B2 (en) | 2001-06-18 |
Family
ID=12868266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5077794A Expired - Fee Related JP3177373B2 (en) | 1993-11-08 | 1994-03-22 | How to recycle painted resin products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3177373B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR970033692A (en) * | 1995-12-30 | 1997-07-22 | 황선두 | Recycling method of waste car bumper coated with thermosetting resin |
| JPH10128746A (en) * | 1996-11-01 | 1998-05-19 | Mitsubishi Heavy Ind Ltd | Apparatus for removing coating film of resin molding |
| JP2023148861A (en) * | 2022-03-30 | 2023-10-13 | リンテック株式会社 | Coating layer removal method and coating layer removal device |
-
1994
- 1994-03-22 JP JP5077794A patent/JP3177373B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07256643A (en) | 1995-10-09 |
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