JP2006334734A - Surface treating method for resin covering member - Google Patents
Surface treating method for resin covering member Download PDFInfo
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- JP2006334734A JP2006334734A JP2005163167A JP2005163167A JP2006334734A JP 2006334734 A JP2006334734 A JP 2006334734A JP 2005163167 A JP2005163167 A JP 2005163167A JP 2005163167 A JP2005163167 A JP 2005163167A JP 2006334734 A JP2006334734 A JP 2006334734A
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- resin
- resin layer
- coated member
- thermosetting resin
- surface treatment
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- 229920005989 resin Polymers 0.000 title claims abstract description 88
- 239000011347 resin Substances 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 35
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 32
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 238000005422 blasting Methods 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 20
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 20
- 230000007062 hydrolysis Effects 0.000 claims abstract description 10
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 19
- 238000004381 surface treatment Methods 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 11
- 238000005979 thermal decomposition reaction Methods 0.000 claims description 6
- 230000001788 irregular Effects 0.000 claims description 3
- 238000004227 thermal cracking Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 45
- 239000007921 spray Substances 0.000 description 8
- 238000004064 recycling Methods 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000002950 deficient Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 238000009283 thermal hydrolysis Methods 0.000 description 3
- 229920000877 Melamine resin Polymers 0.000 description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- VZXTWGWHSMCWGA-UHFFFAOYSA-N 1,3,5-triazine-2,4-diamine Chemical compound NC1=NC=NC(N)=N1 VZXTWGWHSMCWGA-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000007974 melamines Chemical class 0.000 description 1
- 229940050176 methyl chloride Drugs 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Processing Of Solid Wastes (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
Description
本発明は樹脂被覆部材の表面処理方法（以下、単に「表面処理方法」とも称する）に関し、詳しくは、金属基体上に複数の異なる樹脂層を備える樹脂被覆部材に関して、製造工程で発生する不良品の再生や、市場回収品のリサイクルに際し好適に適用可能な樹脂被覆部材の表面処理方法に関する。 The present invention relates to a surface treatment method for a resin-coated member (hereinafter, also simply referred to as “surface treatment method”), and more specifically, a resin-coated member having a plurality of different resin layers on a metal substrate, and a defective product generated in the manufacturing process. The present invention relates to a surface treatment method for a resin-coated member that can be suitably applied to the recycling of products and the recycling of market-collected products.
複写機、プリンタ、ファックス等に用いられる感光ドラム等、金属基体上に複数の異なる樹脂層が形成されてなる構造を有する各種部材に関して、製造工程で発生する不良品や市場回収品はほとんどが産業廃棄物として処理されてきたが、近年の環境保護の観点から、リサイクルすることが望まれている。これらの部材のリサイクルを行うに際しては、従来、溶剤に浸漬するか、または、ブラスト処理を行うことにより樹脂層を剥離する手法が一般的に用いられている。 Most of the defective and market-collected products generated in the manufacturing process are industrially related to various members having a structure in which a plurality of different resin layers are formed on a metal substrate such as photosensitive drums used in copying machines, printers, fax machines, etc. Although it has been treated as waste, recycling is desired from the viewpoint of environmental protection in recent years. When these members are recycled, conventionally, a method of peeling the resin layer by dipping in a solvent or performing a blast treatment is generally used.
感光ドラム表面の樹脂層を溶剤により剥離する技術に関しては、例えば、特許文献１に、金属製基体表面に熱硬化性樹脂層が設けられている電子写真部材を、この熱硬化性樹脂のガラス転移温度以上の温度に過熱した極性溶媒等の液体に浸漬し、金属製基体表面から熱硬化性樹脂層を剥離する塗工膜剥離方法が記載されている。
しかしながら、従来一般的に用いられてきた溶剤を用いた方法に関しては、近年のＶＯＣ規制（Ｖｏｌａｔｉｌｅ Ｏｒｇａｎｉｃ Ｃｏｍｐｏｕｎｄｓ：有機化合物排出規制）の問題から、人体に有害な有機溶剤、特には塩化メチル系等の溶剤の使用が制限されるようになってきており、剥離力の強い有機溶剤は自然環境に対する負荷も大きいことから、今後、使用できなくなることが予想される。一方、環境への負荷を低減した溶剤は、その剥離力についても低下してしまうため、実用性に乏しく、この場合、剥離残りの部分については人の手に頼った処理を行うことが必要となっており、人体に対する負荷も低減できなかった。 However, regarding a method using a solvent that has been generally used in the past, due to the problem of recent VOC regulations (Volatile Organic Compounds), organic solvents that are harmful to the human body, especially methyl chloride-based, etc. The use of solvents has been restricted, and organic solvents with strong peeling power are expected to be unusable in the future because they have a large impact on the natural environment. On the other hand, the solvent that reduces the load on the environment also has poor practicality because its peeling force also decreases, and in this case, it is necessary to perform processing that depends on human hands for the remaining peeling part. The load on the human body could not be reduced.
また、ブラスト処理については、特に感光ドラム等の寸法精度が非常に厳しく管理された用途では、基材を傷つけるおそれのある金属系の投射材は使用できないため、下地をあまり傷めずに表層部の樹脂層のみを剥離することが可能な樹脂系の投射材を使用することが有効である。しかしながら、樹脂層を完全に剥離するまでブラスト処理を行えば、必ず基材表面まで投射が行われることになるため、基材の表層部についても摩耗・損傷を受けることは避けられなかった。 For blasting, especially in applications where the dimensional accuracy of the photosensitive drum or the like is very strictly controlled, metal-based projection materials that can damage the substrate cannot be used. It is effective to use a resin-based projection material capable of peeling only the resin layer. However, if the blasting process is performed until the resin layer is completely peeled off, the projection is always performed on the surface of the base material, so that it is inevitable that the surface layer portion of the base material is also worn or damaged.
上述のように、樹脂被覆部材における樹脂層の剥離に関しては未だ十分な技術が存在せず、従来のような問題を生ずることなく樹脂被覆部材の表面処理を行うことのできる技術が求められていた。中でも、感光ドラム等のように、金属基体上に、異なる複数の樹脂層として熱可塑性樹脂層と熱硬化性樹脂層とが積層されてなる樹脂被覆部材の場合には、これら特性の異なる各樹脂層の剥離を適切に行うことは困難であり、基体にダメージを与えることなく、これら各層を効率良くかつ低コストで剥離できる技術を実現することが求められていた。 As described above, there is still no sufficient technique regarding the peeling of the resin layer in the resin-coated member, and a technique capable of performing the surface treatment of the resin-coated member without causing a conventional problem has been demanded. . In particular, in the case of a resin-coated member in which a thermoplastic resin layer and a thermosetting resin layer are laminated as a plurality of different resin layers on a metal substrate, such as a photosensitive drum, each resin having different characteristics is used. It is difficult to properly separate the layers, and there has been a demand for realizing a technique that can efficiently and inexpensively separate these layers without damaging the substrate.
そこで本発明の目的は、金属基体上に、熱可塑性樹脂層と熱硬化性樹脂層とを含む複数の樹脂層が積層されてなる樹脂被覆部材において、これら樹脂層を効率良くかつ低コストで剥離することができ、しかも、基体を傷めることがない樹脂被覆部材の表面処理方法を提供することにある。 Accordingly, an object of the present invention is to efficiently and inexpensively peel off a resin-coated member in which a plurality of resin layers including a thermoplastic resin layer and a thermosetting resin layer are laminated on a metal substrate. Another object of the present invention is to provide a method for treating the surface of a resin-coated member that does not damage the substrate.
本発明者は鋭意検討した結果、従来のように全樹脂層をブラスト処理により剥離するのではなく、表層側の熱硬化性樹脂層のみをブラスト処理により剥離し、残る熱可塑性樹脂層については熱分解および加水分解により除去する方法を用いることで、低コストでかつ効率の良い樹脂被覆部材の表面処理が可能となり、また、金属基体を傷めることもないことを見出して、本発明を完成するに至った。 As a result of intensive studies, the present inventor does not peel the entire resin layer by blasting as in the past, but peels only the thermosetting resin layer on the surface layer side by blasting, and the remaining thermoplastic resin layer is heated. By using the method of removing by decomposition and hydrolysis, it becomes possible to perform surface treatment of a resin-coated member with low cost and efficiency, and to find out that the metal substrate is not damaged, and to complete the present invention. It came.
即ち、本発明の樹脂被覆部材の表面処理方法は、金属基体上に、少なくとも１層の熱可塑性樹脂層と、少なくとも１層の熱硬化性樹脂層とが順次積層されてなる樹脂被覆部材の表面処理方法であって、前記熱硬化性樹脂層をブラスト処理により剥離した後、前記熱可塑性樹脂層を、高温水蒸気による熱分解と、加水分解とにより除去することを特徴とするものである。 That is, the surface treatment method for a resin-coated member of the present invention is a surface of a resin-coated member in which at least one thermoplastic resin layer and at least one thermosetting resin layer are sequentially laminated on a metal substrate. A treatment method is characterized in that after the thermosetting resin layer is peeled off by blasting, the thermoplastic resin layer is removed by thermal decomposition with high-temperature steam and hydrolysis.
本発明においては、前記ブラスト処理における投射材として、熱硬化性樹脂を主成分とする樹脂投射材を好適に用いることができ、特には、粒径５０〜１０００μｍの範囲の熱硬化性樹脂成形物の粉砕物であって、各粒子が実質的に鋭利な稜線を持つ不定形な多面体であり、かつ、分級段階ごとに粒度がほぼ均質化された粉砕物を用いることが好ましい。また、前記ブラスト処理においては、エア式ブラスト装置を好適に用いることができる。本発明は、前記樹脂被覆部材としての感光ドラム等に好適に適用可能である。 In the present invention, a resin projection material mainly composed of a thermosetting resin can be suitably used as the projection material in the blasting treatment, and in particular, a thermosetting resin molded product having a particle diameter of 50 to 1000 μm. It is preferable to use a pulverized product in which each particle is an irregular polyhedron having a substantially sharp ridgeline, and the particle size is approximately homogenized for each classification step. In the blasting process, an air blasting apparatus can be suitably used. The present invention can be suitably applied to a photosensitive drum or the like as the resin coating member.
本発明の表面処理方法によれば、上記構成としたことにより、樹脂被覆部材において、金属基体上に積層された複数の樹脂層を効率良くかつ低コストで剥離することができ、しかも、基体を傷めることがない。本発明の表面処理方法は、プリンタ等の部品としての感光ドラム等に関する、工程内不良品の再生や市場回収品のリサイクルに好適に適用可能である。 According to the surface treatment method of the present invention, with the above-described configuration, in the resin-coated member, a plurality of resin layers laminated on the metal substrate can be peeled efficiently and at low cost. There is no harm. The surface treatment method of the present invention can be suitably applied to the reproduction of defective products in the process and the recycling of products collected on the market related to photosensitive drums as parts of printers and the like.
以下、本発明の好適な実施の形態につき詳細に説明する。
本発明は、金属基体上に、少なくとも１層の熱可塑性樹脂層と、少なくとも１層の熱硬化性樹脂層とが順次積層されてなる樹脂被覆部材の表面処理方法であり、このうち表層側の熱硬化性樹脂層をブラスト処理により剥離した後、残った熱可塑性樹脂層を、高温水蒸気による熱分解と、加水分解とにより除去する点に特徴を有する。ブラスト処理と、熱分解および加水分解を用いた処理とを組み合わせたことで、熱硬化性樹脂層と熱可塑性樹脂層とをいずれも良好に剥離・除去することが可能となり、かつ、従来のブラスト処理のみによる剥離の場合のように金属基体を傷めることもない。
Hereinafter, preferred embodiments of the present invention will be described in detail.
The present invention is a surface treatment method for a resin-coated member in which at least one thermoplastic resin layer and at least one thermosetting resin layer are sequentially laminated on a metal substrate. It is characterized in that after the thermosetting resin layer is peeled off by blasting, the remaining thermoplastic resin layer is removed by thermal decomposition with high-temperature steam and hydrolysis. By combining the blasting treatment with the treatment using thermal decomposition and hydrolysis, it becomes possible to peel and remove both the thermosetting resin layer and the thermoplastic resin layer satisfactorily, and the conventional blasting. The metal substrate is not damaged as in the case of peeling only by treatment.
本発明におけるブラスト処理は、表層側の熱硬化性樹脂層を剥離することができるものであれば、その処理条件等については特に制限されるものではないが、例えば、以下のように行うことができる。 In the present invention, the blasting treatment is not particularly limited as long as it can peel the thermosetting resin layer on the surface layer side, but for example, it may be performed as follows. it can.
ブラスト処理に用いる投射材は、特に制限されるものではないが、金属基体の傷つきを防止する観点から、熱硬化性樹脂を主成分とする樹脂投射材を好適に用いることができる。かかる熱硬化性樹脂としては、特に制限されるものではないが、例えば、メラミン樹脂（メラミン−フォルムアルデヒド樹脂）、ユリア樹脂（尿素−フォルムアルデヒド樹脂）、ポリカーボネート樹脂、フェノール樹脂、エポキシ樹脂、不飽和ポリエステル樹脂、アクリル樹脂、グアナミン樹脂、ポリウレタン樹脂等を挙げることができ、その他、これら樹脂に匹敵する硬度を有する樹脂も使用することが可能である。これら熱硬化性樹脂を用いた投射材は、吹き付け後、回収し、３０〜４０回程度繰り返し循環させて使用することができる。 Although the projection material used for a blast process is not restrict | limited in particular, From a viewpoint of preventing the damage | damage of a metal base | substrate, the resin projection material which has a thermosetting resin as a main component can be used suitably. The thermosetting resin is not particularly limited, and examples thereof include melamine resin (melamine-formaldehyde resin), urea resin (urea-formaldehyde resin), polycarbonate resin, phenol resin, epoxy resin, and unsaturated resin. A polyester resin, an acrylic resin, a guanamine resin, a polyurethane resin, and the like can be given, and other resins having a hardness comparable to these resins can also be used. Projection materials using these thermosetting resins can be recovered after spraying and repeatedly circulated about 30 to 40 times.
本発明に使用可能な樹脂投射材としては、具体的には例えば、粒径５０〜１０００μｍの範囲の熱硬化性樹脂成形物の粉砕物であって、各粒子が実質的に鋭利な稜線を持つ不定形な多面体であり、かつ、分級段階ごとに粒度がほぼ均質化された粉砕物を好適に用いることができる。このような粉砕物は、国際公開第００／４５９９４号パンフレットに記載の方法により得ることができる。 Specifically, the resin projection material usable in the present invention is, for example, a pulverized product of a thermosetting resin molded product having a particle size in the range of 50 to 1000 μm, and each particle has a substantially sharp ridgeline. A pulverized product that is an irregular polyhedron and has a substantially uniform particle size at each classification stage can be suitably used. Such a pulverized product can be obtained by the method described in International Publication No. 00/45994.
また、ブラスト装置としては、エア式ブラスト装置を用いることが好ましく、これにより金属基体を傷つけずに、表層側の熱硬化性樹脂層を確実に除去することが可能となる。中でも、直噴射式のエア式ブラスト装置が好適であるが、その他、遠心式、バレル式なども使用可能であり、特に制限されるものではなく、用途や使用環境に応じて適宜選定して用いることができる。 Moreover, it is preferable to use an air-type blasting device as the blasting device, which makes it possible to reliably remove the thermosetting resin layer on the surface layer side without damaging the metal substrate. Among them, a direct injection type air blasting device is suitable, but other types such as a centrifugal type and a barrel type can also be used, and are not particularly limited, and are appropriately selected and used depending on the application and usage environment. be able to.
さらに、投射材の吹き付けに用いるノズルについても、特に制限されるものではなく、通常ブラスト処理に用いるものを適宜選択して使用することが可能であるが、例えば、口径φ４〜６ｍｍ程度の小径のものを用いることが好ましい。また、投射材の噴射圧は０．３〜０．５ＭＰａ程度とすることができる。 Further, the nozzle used for spraying the projection material is not particularly limited, and it is possible to appropriately select and use those normally used for the blasting process. For example, the nozzle having a small diameter of about 4 to 6 mm is used. It is preferable to use one. Moreover, the injection pressure of a projection material can be about 0.3-0.5 MPa.
具体的なブラスト処理方法としては、例えば、樹脂被覆部材が円筒状の感光ドラムである場合には、感光ドラムを回転させながら、吹き付けノズルを一定速度で感光ドラムの長手方向に送る方法を用いることができ、これにより感光ドラムの表面全体をブラスト処理することができる。この際、樹脂被覆部材と吹き付けノズルとの距離、吹き付け角度、噴射流量、噴射圧、噴射時間等を適宜調整することで、表面の熱硬化性樹脂層のみを良好に剥離・除去することができる。例えば、厚み２５〜３０μｍの熱硬化性樹脂層が形成された長さ３００ｍｍ程度の感光ドラムの場合、感光ドラムを３０〜１００ｒｐｍで回転させ、投射材としてＭＧ−０５（（株）ブリヂストン製 メラミン系樹脂投射材、粒径：約３００〜５００μｍ）を用いて、噴射圧０．３〜０．５ＭＰａにて、口径φ４〜６ｍｍの吹き付けノズルを１〜２０ｍｍ／ｓｅｃのスピードで平行移動させながらブラスト処理を行うことで、処理時間約６０〜１２０秒で剥離を完了することができる。 As a specific blasting method, for example, when the resin-coated member is a cylindrical photosensitive drum, a method of feeding the spray nozzle at a constant speed in the longitudinal direction of the photosensitive drum while rotating the photosensitive drum is used. Thus, the entire surface of the photosensitive drum can be blasted. At this time, by appropriately adjusting the distance between the resin coating member and the spray nozzle, the spray angle, the spray flow rate, the spray pressure, the spray time, etc., only the thermosetting resin layer on the surface can be peeled and removed satisfactorily. . For example, in the case of a photosensitive drum having a length of about 300 mm on which a thermosetting resin layer having a thickness of 25 to 30 μm is formed, the photosensitive drum is rotated at 30 to 100 rpm, and MG-05 (Melamine series manufactured by Bridgestone Corporation) is used as a projection material. Blasting treatment using a resin projection material, particle size: about 300 to 500 μm), with a spray nozzle having a diameter of 4 to 6 mm being translated at a speed of 1 to 20 mm / sec at an injection pressure of 0.3 to 0.5 MPa. By performing this, peeling can be completed in a processing time of about 60 to 120 seconds.
本発明においては、前述したように、ブラスト処理により熱硬化性樹脂層を剥離した後、残った熱可塑性樹脂層を、３５０〜４５０℃程度の高温水蒸気による熱分解と加水分解とにより除去する。熱可塑性樹脂層は、これら熱分解および加水分解によりモノマー化され、最終的にはガス化されて除去されるため、これにより、ブラスト処理の場合のように表面粗さを変化させることもなく、金属基材上の樹脂層を完全に剥離・除去して、金属基材を初期状態に再生することができる。この熱可塑性樹脂層の除去工程は、例えば、一般的な加水分解装置を用いて行うことができる。この場合、熱可塑性樹脂の除去時間としては、約２〜８時間程度必要となる。 In the present invention, as described above, after the thermosetting resin layer is peeled off by blasting, the remaining thermoplastic resin layer is removed by thermal decomposition and hydrolysis with high-temperature steam at about 350 to 450 ° C. The thermoplastic resin layer is monomerized by these thermal decomposition and hydrolysis, and finally gasified and removed, so that the surface roughness does not change as in the case of blasting, The resin layer on the metal substrate can be completely peeled and removed to regenerate the metal substrate to the initial state. This process of removing the thermoplastic resin layer can be performed using, for example, a general hydrolysis apparatus. In this case, the removal time of the thermoplastic resin requires about 2 to 8 hours.
本発明を適用することのできる樹脂被覆部材としては、特に制限されるものではないが、例えば、感光ドラムを挙げることができ、この場合の金属基体としては、例えば、アルミニウムである。また、本発明の適用可能な熱可塑性樹脂および熱硬化性樹脂についても特に制限はなく、いかなるものであってもよい。本発明は、前述したように、これら樹脂被覆部材の製造工程における不良品の再生や、市場回収品のリサイクルに好適に適用可能である。 The resin-coated member to which the present invention can be applied is not particularly limited, and examples thereof include a photosensitive drum. In this case, the metal substrate is, for example, aluminum. Moreover, there is no restriction | limiting in particular also about the thermoplastic resin and thermosetting resin which can apply this invention, What kind of thing may be sufficient. As described above, the present invention can be suitably applied to the recovery of defective products in the manufacturing process of these resin-coated members and the recycling of market-collected products.
以下、本発明を、実施例を用いてより詳細に説明する。
アルミニウム基体上に、厚み２５μｍの熱可塑性樹脂層と、厚み２５μｍのフェノール樹脂を主成分とする熱硬化性樹脂層とが順次積層されてなる長さ約３００ｍｍの感光ドラムをサンプルとして用いた。
Hereinafter, the present invention will be described in more detail with reference to examples.
A photosensitive drum having a length of about 300 mm in which a thermoplastic resin layer having a thickness of 25 μm and a thermosetting resin layer mainly composed of a phenol resin having a thickness of 25 μm are sequentially laminated on an aluminum substrate was used as a sample.
この感光ドラムを２００ｒｐｍで回転させ、投射材としてＭＧ−０５（（株）ブリヂストン製 樹脂投射材、粒径：約３００〜５００μｍ）を用いて、噴射圧０．５ＭＰａにて、口径φ６ｍｍの吹き付けノズルで約２分間ブラスト処理を行うことで、熱硬化性樹脂層を剥離することができた。次いで、加水分解装置（ムーブエンジニアリング（ＭＯＶＥｎｇｉｎｅｅｒｉｎｇ）社製のポリマー除去装置ＨＹＰＯＸ）を用いて、約３時間処理を行うことで、熱可塑性樹脂層を除去した。 This photosensitive drum is rotated at 200 rpm, MG-05 (Bridgestone Co., Ltd. resin projection material, particle size: about 300 to 500 μm) is used as a projection material, and a spray nozzle with a diameter of 6 mm at an injection pressure of 0.5 MPa. The thermosetting resin layer was able to be peeled off by performing blasting for about 2 minutes. Next, the thermoplastic resin layer was removed by performing a treatment for about 3 hours using a hydrolysis apparatus (polymer removal apparatus HYPOX manufactured by MOVEEngineering).
結果として得られたアルミニウム基体の表面粗さＲａは約０．２μｍで、未使用のアルミニウム基体の表面粗さと同等であり、本発明の表面処理により、アルミニウム基体表面を傷めることなく、樹脂層のみを剥離・除去できることが確かめられた。 The resulting aluminum substrate has a surface roughness Ra of about 0.2 μm, which is equivalent to the surface roughness of an unused aluminum substrate. By the surface treatment of the present invention, only the resin layer is not damaged. It was confirmed that can be removed and removed.
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| JP2014094328A (en) * | 2012-11-07 | 2014-05-22 | Neturen Co Ltd | Method for recovering aluminum from packaging material containing aluminum layer and apparatus for recovering aluminum using the same |
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| JP2014094328A (en) * | 2012-11-07 | 2014-05-22 | Neturen Co Ltd | Method for recovering aluminum from packaging material containing aluminum layer and apparatus for recovering aluminum using the same |
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