JP2000084928A - Thermoplastic polyurethane molded article containing thermosetting polyurethane waste and method for reusing thermosetting polyurethane waste - Google Patents
Thermoplastic polyurethane molded article containing thermosetting polyurethane waste and method for reusing thermosetting polyurethane wasteInfo
- Publication number
- JP2000084928A JP2000084928A JP25804998A JP25804998A JP2000084928A JP 2000084928 A JP2000084928 A JP 2000084928A JP 25804998 A JP25804998 A JP 25804998A JP 25804998 A JP25804998 A JP 25804998A JP 2000084928 A JP2000084928 A JP 2000084928A
- Authority
- JP
- Japan
- Prior art keywords
- waste
- thermosetting polyurethane
- thermosetting
- polyurethane
- polyurethane waste
- 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.)
- Pending
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
- B29B17/0026—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
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
-
- 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 And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、熱硬化性ポリウレ
タン廃棄物を含む熱可塑性ポリウレタン成形物及び熱硬
化性ポリウレタン廃棄物の再利用方法に関し、詳しくは
熱硬化性ポリウレタン廃棄物の粉砕物を熱可塑性ポリウ
レタンに混合してなる熱可塑性ポリウレタン成形物及び
熱硬化性ポリウレタン廃棄物を粉砕して熱可塑性ポリウ
レタンに混合、成形する工程からなる熱硬化性ポリウレ
タン廃棄物の再利用方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermoplastic polyurethane molded article containing thermosetting polyurethane waste and a method for recycling thermosetting polyurethane waste. The present invention relates to a method for reusing a thermosetting polyurethane waste, which comprises a step of pulverizing a thermoplastic polyurethane molded product and a thermosetting polyurethane waste mixed with a thermoplastic polyurethane, mixing the thermoplastic polyurethane with a thermoplastic polyurethane, and molding.
【０００２】[0002]
【従来の技術】ポリウレタン樹脂は、熱硬化性と熱可塑
性に大別される。熱硬化性ポリウレタンのうち、軟質フ
ォームは軽量で弾性があるため、家具のクッション、ベ
ッド、カーペット下地、包装材料等に使用されている。
また、硬質フォームは断熱性や強度に優れ、パイプ、ビ
ルのパネル、自動車のバンパー・フェンダー等に使用さ
れている。このように熱硬化性樹脂は種々の分野で広く
使用されており、その反面熱硬化性ポリウレタンからな
る廃棄物も増加傾向にある。ところで、地球環境の保全
や省資源の見地より、プラスチックの再利用についても
益々重要な課題となってきており、プラスチックの再利
用方法として、従来よりマテリアルリサイクル、ケミカ
ルリサイクル、エネルギーリサイクル等の技術がある。
ところが、熱硬化性ポリウレタンは加熱すると化学反応
を起こして硬化するため、一度硬化すると軟化せず、ど
んな溶媒にも溶けなくなるという特性を有する。そのた
め、熱硬化性ポリウレタン廃棄物は、加工の難しさ、経
済性、環境への問題等様々な問題があり、前記いずれの
再利用方法をも適用することができない。そこで、熱硬
化性ポリウレタン廃棄物の処理は、埋め立てあるいは焼
却以外に方法がないのが現状である。2. Description of the Related Art Polyurethane resins are roughly classified into thermosetting and thermoplastic. Among thermosetting polyurethanes, flexible foams are used for cushions, beds, carpet bases, packaging materials and the like of furniture because of their light weight and elasticity.
Rigid foams have excellent heat insulation and strength, and are used for pipes, building panels, bumpers and fenders of automobiles, and the like. As described above, thermosetting resins are widely used in various fields, and on the other hand, wastes made of thermosetting polyurethane are also increasing. By the way, from the viewpoint of global environment conservation and resource saving, the reuse of plastics is becoming increasingly important. is there.
However, a thermosetting polyurethane causes a chemical reaction when heated, and is cured. Therefore, once cured, it does not soften and has the property of being insoluble in any solvent. Therefore, the thermosetting polyurethane waste has various problems such as difficulty in processing, economy, and environmental problems, and any of the above-mentioned recycling methods cannot be applied. Therefore, at present, there is no method for treating thermosetting polyurethane waste other than landfill or incineration.
【０００３】一方、熱可塑性ポリウレタンは弾性や耐摩
耗性に優れ、エラストマーやフォームとしてプリンター
のロール、車輪、ベルト等種々の用途に多用されてお
り、加熱によって軟化し、冷却すると固化するという特
性があるため、容易に再利用することができる。[0003] On the other hand, thermoplastic polyurethane is excellent in elasticity and abrasion resistance, and is widely used as an elastomer or foam in various applications such as rolls, wheels, and belts of printers. Therefore, it can be easily reused.
【０００４】[0004]
【発明が解決しようとする課題】ところで、熱硬化性ポ
リウレタン廃棄物の埋め立ては、用地の確保の困難性や
環境破壊が年々問題になってきている。また、焼却の場
合は、シアン化水素等の有毒ガスが発生する等の環境へ
の影響や焼却炉を損傷させやすいということが問題にな
ってきている。However, landfilling of thermosetting polyurethane waste has been problematic year after year due to difficulty in securing land and environmental destruction. In addition, in the case of incineration, there is a problem that the toxic gas such as hydrogen cyanide is generated and the environment is affected, and the incinerator is easily damaged.
【０００５】そこで、本発明者等は、前記熱可塑性ポリ
ウレタンが再利用が容易であることに着目し、本発明に
想到したもので、その目的は、熱硬化性ポリウレタン廃
棄物を含む熱可塑性ポリウレタン成形物を提供すること
及び熱硬化性ポリウレタン廃棄物の再利用方法を提供す
ることにある。Accordingly, the present inventors have focused on the fact that the above-mentioned thermoplastic polyurethane is easy to reuse, and conceived the present invention. The object of the present invention is to provide a thermoplastic polyurethane containing waste thermosetting polyurethane. It is an object of the present invention to provide a molded article and a method for recycling thermosetting polyurethane waste.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するた
め、請求項１に記載の発明は、熱硬化性ポリウレタン廃
棄物の粉砕物を含む熱可塑性ポリウレタン成形物を内容
とする。Means for Solving the Problems In order to solve the above-mentioned problems, the invention according to claim 1 includes a thermoplastic polyurethane molded article containing a pulverized thermosetting polyurethane waste.
【０００７】熱硬化性ポリウレタン廃棄物を含む熱可塑
性ポリウレタンは、熱硬化性ポリウレタン単体では困難
であった射出成形、押出成形、ブロー成形ができる。[0007] Thermoplastic polyurethane containing thermosetting polyurethane waste can be injection-molded, extruded, and blow-molded, which was difficult with thermosetting polyurethane alone.
【０００８】上記課題を解決するため、請求項２に記載
の発明は、熱硬化性ポリウレタン廃棄物の粉砕物の大き
さが、３ｍｍ角以下であることを内容とする。[0008] In order to solve the above-mentioned problem, the invention according to claim 2 is characterized in that the size of the pulverized thermosetting polyurethane waste is 3 mm square or less.
【０００９】熱硬化性ポリウレタン廃棄物の粉砕物の大
きさが３ｍｍ角を越えると、射出成形機のスクリューへ
の熱硬化性ポリウレタン廃棄物と熱可塑性ポリウレタン
の混合物の供給あるいは可塑化が不安定になり、均一な
成形物が得られなくなるからである。熱硬化性ポリウレ
タン廃棄物の粉砕物は、細かいほど均一性に優れる熱可
塑性ポリウレタン成形物が得られるので、粉末状がより
好ましい。If the size of the pulverized thermosetting polyurethane waste exceeds 3 mm square, the supply of the mixture of the thermosetting polyurethane waste and the thermoplastic polyurethane to the screw of the injection molding machine or the plasticization becomes unstable. This is because a uniform molded product cannot be obtained. The finer the pulverized product of the thermosetting polyurethane waste, the finer it is, the better the homogeneity of the thermoplastic polyurethane molded product can be obtained.
【００１０】上記課題を解決するため、請求項３に記載
の発明は、熱硬化性ポリウレタン廃棄物を含む熱可塑性
ポリウレタン成形物に占める熱硬化性ポリウレタン廃棄
物の粉砕物の含有量が３０重量％以下であることを内容
とする。[0010] In order to solve the above-mentioned problems, the invention according to claim 3 is characterized in that the content of the crushed product of the thermosetting polyurethane waste in the thermoplastic polyurethane molded product containing the thermosetting polyurethane waste is 30% by weight. The content is as follows.
【００１１】熱硬化性ポリウレタン廃棄物の含有量が３
０重量％を越えると、得られる熱可塑性ポリウレタン成
形物の物性が著しく低下し、また反りを発生する虞があ
るからである。なお、本発明は熱硬化性ポリウレタン廃
棄物の粉砕物の含有量における上限を３０重量％とする
もので、下限は０重量％とするものでないことは言うま
でもない。本発明に係る熱可塑性ポリウレタン成形物
は、熱硬化性ポリウレタン廃棄物を再利用するものであ
り、混合される熱硬化性ポリウレタン廃棄物の粉砕物の
含有量は多いほど好ましいのであり、熱硬化性ポリウレ
タン廃棄物が混合されないことはないからである。[0011] The content of thermosetting polyurethane waste is 3
If the amount exceeds 0% by weight, the physical properties of the obtained thermoplastic polyurethane molded product are remarkably deteriorated, and there is a possibility that warpage may occur. In the present invention, it is needless to say that the upper limit of the content of the pulverized thermosetting polyurethane waste is 30% by weight, and the lower limit is not 0% by weight. The thermoplastic polyurethane molded product according to the present invention reuses the thermosetting polyurethane waste, and the higher the content of the pulverized product of the mixed thermosetting polyurethane waste, the more preferable the thermosetting polyurethane waste. This is because polyurethane waste is not mixed.
【００１２】上記課題を解決するため、請求項４に記載
の発明は、熱硬化性ポリウレタン廃棄物を粉砕する工程
と、粉砕された熱硬化性ポリウレタン廃棄物を熱可塑性
ポリウレタンに混合する工程と、熱硬化性ポリウレタン
廃棄物と熱可塑性ポリウレタンの混合物を成形する工程
とからなる熱硬化性ポリウレタン廃棄物の再利用方法を
内容とする。In order to solve the above problems, the invention according to claim 4 comprises a step of pulverizing thermosetting polyurethane waste, a step of mixing the pulverized thermosetting polyurethane waste with a thermoplastic polyurethane, A method of recycling thermosetting polyurethane waste, comprising a step of molding a mixture of thermosetting polyurethane waste and thermoplastic polyurethane.
【００１３】熱硬化性ポリウレタン廃棄物の再利用方法
では、熱硬化性ポリウレタン廃棄物が粉砕されるので、
加熱により軟化する熱可塑性ポリウレタンに前記粉砕物
を混合して成形物が得られ、熱硬化性ポリウレタンを再
利用することができる。In the method for recycling thermosetting polyurethane waste, the thermosetting polyurethane waste is crushed.
The pulverized material is mixed with the thermoplastic polyurethane which is softened by heating to obtain a molded product, and the thermosetting polyurethane can be reused.
【００１４】[0014]
【発明の実施の形態】以下、本発明の実施の形態につい
て説明する。Embodiments of the present invention will be described below.
【００１５】熱硬化性ポリウレタン廃棄物は、軟質、硬
質あるいはエーテル系、エステル系等を問わず、すべて
の熱硬化性ポリウレタンに由来する廃棄物を含むもので
ある。The thermosetting polyurethane waste includes all wastes derived from thermosetting polyurethane, whether soft, hard, ether-based, ester-based, or the like.
【００１６】熱硬化性ポリウレタン廃棄物を粉砕するに
は、グラインダ、ロール機、回転ディスク粉砕機等の通
常の方法を適宜使用することができる。熱硬化性ポリウ
レタン廃棄物の粉砕物の大きさは、３ｍｍ角を越えない
ことが好ましい。また、粉砕物の形状は、いかなる形状
でもよいが、射出成形機のスクリューへの供給を円滑に
行えるようにするためには、球状が最も好ましい。In order to grind the thermosetting polyurethane waste, a usual method such as a grinder, a roll machine, and a rotating disk grinder can be appropriately used. The size of the pulverized thermosetting polyurethane waste preferably does not exceed 3 mm square. The shape of the pulverized product may be any shape, but a spherical shape is most preferable in order to smoothly supply the pulverized product to the screw of the injection molding machine.
【００１７】熱硬化性ポリウレタン廃棄物の粉砕物と混
合される熱可塑性ポリウレタンは、エーテル系、エステ
ル系を問わず、ウレタン硬度も問わない。また、バージ
ン材、再生材、あるいはこれらを混合したものでもよ
い。The thermoplastic polyurethane mixed with the pulverized waste of thermosetting polyurethane waste may be of ether type or ester type, and may have any urethane hardness. Further, a virgin material, a recycled material, or a mixture thereof may be used.
【００１８】熱硬化性ポリウレタン廃棄物の粉砕物と熱
可塑性ポリウレタンの混合は、種々の方法を使用でき
る。タンブラーにより混合しても、あるいは２軸混練機
やニーダー混練機により混練後、ペレットを形成し、成
形材料としてもよい。また、混合の際に、必要に応じて
ガラス繊維、ナイロン繊維等の補強材、酸化チタン等の
着色材、その他可塑材、潤滑材等を適宜配合してもよ
い。Various methods can be used for mixing the pulverized thermosetting polyurethane waste and the thermoplastic polyurethane. The mixture may be mixed by a tumbler, or may be kneaded with a biaxial kneader or a kneader kneader, and then formed into pellets to be used as a molding material. In addition, at the time of mixing, a reinforcing material such as glass fiber and nylon fiber, a coloring material such as titanium oxide, other plasticizers, a lubricant, and the like may be appropriately added as necessary.
【００１９】熱硬化性ポリウレタン廃棄物と熱可塑性ポ
リウレタンの混合物の成形は、射出成形、押出成形ある
いはブロー成形を各種適用できる。The molding of the mixture of the thermosetting polyurethane waste and the thermoplastic polyurethane can be carried out by injection molding, extrusion molding or blow molding.
【００２０】[0020]
【実施例】以下、本発明を実施例及び比較例を挙げて説
明する。The present invention will be described below with reference to examples and comparative examples.
【００２１】実施例 熱硬化性ポリウレタン廃棄物を約２．７ｍｍ角の大
きさに粉砕する。熱硬化性ポリウレタンは、エーテル系
のＨｓ９０タイプを使用する。 の粉砕物と熱可塑性ポリウレタンをタンブラーに
て混合する。熱可塑性ポリウレタンはエステル系Ｈｓ９
０タイプを使用し、の粉砕物を３０重量％混入する。
この混合物は、１００℃にて３時間以上乾燥する。 乾燥後、の混合物を射出成形機に投入し、射出成
形し厚さ２ｍｍのシートの実施例に係る成形物を得た。EXAMPLE A thermosetting polyurethane waste is ground to a size of about 2.7 mm square. As the thermosetting polyurethane, an ether type Hs90 type is used. And the thermoplastic polyurethane are mixed with a tumbler. Thermoplastic polyurethane is ester-based Hs9
No. 0 type is used, and 30% by weight of the pulverized material is mixed.
The mixture is dried at 100 ° C. for 3 hours or more. After drying, the mixture was put into an injection molding machine and injection molded to obtain a molded product according to an example of a sheet having a thickness of 2 mm.
【００２２】比較例 実施例と同様のエステル系Ｈｓ９０タイプの熱可塑性ポ
リウレタンのみからなる厚さ２ｍｍのシートを射出成形
して比較例に係る成形物を得た。COMPARATIVE EXAMPLE A 2 mm-thick sheet made of only the same ester-type Hs90-type thermoplastic polyurethane as in the example was injection-molded to obtain a molded product according to the comparative example.
【００２３】製造した実施例と比較例について、種々の
物性を検討し、その結果を表１に示す。なお、硬度はＪ
ＩＳ Ｋ６２５３、１００％モジュラス、３００％モジ
ュラス、伸び、引張強度はＪＩＳ Ｋ６２５１、引裂強
度はＪＩＳ Ｋ６２５２に準じて試験を行った。Various physical properties were examined for the manufactured Examples and Comparative Examples, and the results are shown in Table 1. The hardness is J
The test was carried out according to IS K6253, 100% modulus, 300% modulus, elongation and tensile strength according to JIS K6251, and the tear strength according to JIS K6252.
【００２４】[0024]
【表１】 上記表１より、実施例の熱硬化性ポリウレタン廃棄物を
含む熱可塑性ポリウレタン成形物の物性は、比較例に比
し「伸び」が若干高くなっているものの他の物性値は若
干低下している。しかし、この程度の低下であれば熱可
塑性ポリウレタン成形物としての実用上全く問題がない
ものと考えられ、熱硬化性ポリウレタン廃棄物の再利用
は十分可能である。[Table 1] From Table 1 above, the physical properties of the thermoplastic polyurethane molded products containing the thermosetting polyurethane wastes of the examples are slightly higher in “elongation” than those of the comparative examples, but the other physical property values are slightly lower. . However, it is considered that there is no problem in practical use as a thermoplastic polyurethane molded article if the reduction is to this extent, and the thermosetting polyurethane waste can be sufficiently reused.
【００２５】[0025]
【発明の効果】請求項１に記載の発明に係る熱硬化性ポ
リウレタン廃棄物を含む熱可塑性ポリウレタンは、熱可
塑性ポリウレタンに熱硬化性ポリウレタン廃棄物の粉砕
物が混合され、射出成形、押出成形、ブロー成形のいず
れによっても成形できるので、熱硬化性ポリウレタン廃
棄物を有効に再利用できる。According to the first aspect of the present invention, the thermoplastic polyurethane containing the thermosetting polyurethane waste is obtained by mixing the thermoplastic polyurethane with a crushed product of the thermosetting polyurethane waste, and performing injection molding, extrusion molding, and the like. Since it can be formed by any of blow molding, the thermosetting polyurethane waste can be effectively reused.
【００２６】請求項２に記載の発明に係る熱硬化性ポリ
ウレタン廃棄物を含む熱可塑性ポリウレタンは、熱硬化
性ポリウレタンの粉砕物の大きさが３ｍｍ角以下である
ことにより、射出成形機のスクリューへの熱硬化性ポリ
ウレタン廃棄物と熱可塑性ポリウレタンの混合物の供給
あるいは可塑化が安定して行え、均一な成形物が得られ
る。The thermoplastic polyurethane containing the thermosetting polyurethane waste according to the second aspect of the present invention can be used in a screw of an injection molding machine because the size of the pulverized thermosetting polyurethane is 3 mm square or less. The supply or plasticization of a mixture of the thermosetting polyurethane waste and the thermoplastic polyurethane can be performed stably, and a uniform molded product can be obtained.
【００２７】請求項３に記載の発明に係る熱硬化性ポリ
ウレタン廃棄物を含む熱可塑性ポリウレタンは、熱硬化
性ポリウレタン廃棄物の粉砕物の含有量を３０重量％以
下にすることにより、熱可塑性ポリウレタン成形物とし
ての物性を十分に維持することができる。The thermoplastic polyurethane containing the thermosetting polyurethane waste according to the third aspect of the present invention is obtained by reducing the content of the pulverized thermosetting polyurethane waste to 30% by weight or less. The physical properties as a molded product can be sufficiently maintained.
【００２８】請求項４に記載の発明に係る熱硬化性ポリ
ウレタン廃棄物の再利用方法は、熱硬化性ポリウレタン
廃棄物を粉砕する工程と、この粉砕物を熱可塑性ポリウ
レタンに混合する工程と、この混合物を成形する工程と
からなるので、埋め立てか焼却以外に処理できなかった
熱硬化性ポリウレタン廃棄物を有効に再利用でき、地球
環境の保全と人の健康の保全に寄与することができる。The method for recycling thermosetting polyurethane waste according to the invention according to claim 4 includes a step of pulverizing the thermosetting polyurethane waste, a step of mixing the pulverized product with the thermoplastic polyurethane, Since the process comprises the step of molding the mixture, the thermosetting polyurethane waste that could not be treated other than by landfill or incineration can be effectively reused, and can contribute to the preservation of the global environment and the preservation of human health.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4F201 AA31 AA42 AA50 AR12 AR14 BA01 BA04 BA05 BC01 BC02 BC12 BC17 BC25 BC37 BK73 BN30 BP11 BP32 4F301 AA29 BA21 BB04 BB05 BB06 BE11 BE21 BE31 BF12 BF27 BF31 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4F201 AA31 AA42 AA50 AR12 AR14 BA01 BA04 BA05 BC01 BC02 BC12 BC17 BC25 BC37 BK73 BN30 BP11 BP32 4F301 AA29 BA21 BB04 BB05 BB06 BE11 BE21 BE31 BF12 BF27 BF31
Claims (4)
可塑性ポリウレタンに混合されてなる熱硬化性ポリウレ
タン廃棄物を含む熱可塑性ポリウレタン成形物。1. A thermoplastic polyurethane molded article containing a thermosetting polyurethane waste obtained by mixing a crushed product of a thermosetting polyurethane waste with a thermoplastic polyurethane.
きさが、３ｍｍ角以下であることを特徴とする請求項１
に記載の熱硬化性ポリウレタン廃棄物を含む熱可塑性ポ
リウレタン成形物。2. The size of the pulverized thermosetting polyurethane waste is 3 mm square or less.
A thermoplastic polyurethane molded article comprising the thermosetting polyurethane waste according to claim 1.
性ポリウレタン成形物に占める熱硬化性ポリウレタン廃
棄物の粉砕物の含有量が３０重量％以下であることを特
徴とする請求項１又は２に記載の熱硬化性ポリウレタン
廃棄物を含む熱可塑性ポリウレタン成形物。3. The method according to claim 1, wherein the content of the crushed thermosetting polyurethane waste in the thermoplastic polyurethane molded product containing the thermosetting polyurethane waste is 30% by weight or less. Thermoplastic polyurethane moldings comprising the thermosetting polyurethane wastes described.
程と、粉砕された熱硬化性ポリウレタン廃棄物を熱可塑
性ポリウレタンに混合する工程と、熱硬化性ポリウレタ
ン廃棄物と熱可塑性ポリウレタンの混合物を成形する工
程とからなることを特徴とする熱硬化性ポリウレタン廃
棄物の再利用方法。4. A process for pulverizing a thermosetting polyurethane waste, a step of mixing the pulverized thermosetting polyurethane waste with a thermoplastic polyurethane, and forming a mixture of the thermosetting polyurethane waste and the thermoplastic polyurethane. A method of recycling thermosetting polyurethane waste.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25804998A JP2000084928A (en) | 1998-09-11 | 1998-09-11 | Thermoplastic polyurethane molded article containing thermosetting polyurethane waste and method for reusing thermosetting polyurethane waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25804998A JP2000084928A (en) | 1998-09-11 | 1998-09-11 | Thermoplastic polyurethane molded article containing thermosetting polyurethane waste and method for reusing thermosetting polyurethane waste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000084928A true JP2000084928A (en) | 2000-03-28 |
Family
ID=17314843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25804998A Pending JP2000084928A (en) | 1998-09-11 | 1998-09-11 | Thermoplastic polyurethane molded article containing thermosetting polyurethane waste and method for reusing thermosetting polyurethane waste |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000084928A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003033911A (en) * | 2001-07-24 | 2003-02-04 | Sumitomo Bakelite Co Ltd | Method and device for manufacturing thermosetting- resin molding material |
| WO2012065887A1 (en) * | 2010-11-15 | 2012-05-24 | Basf Se | Recycling of cross-linked polyurethanes |
| JP5187603B1 (en) * | 2012-04-25 | 2013-04-24 | 豊 土屋 | Plastic compound and waste treatment, storage container and storage method using the same |
| JP2019077177A (en) * | 2017-10-20 | 2019-05-23 | 株式会社関商店 | Processing method soft urethane waste, manufacturing method of solid fuel, solid fuel, and twin-shaft crusher |
-
1998
- 1998-09-11 JP JP25804998A patent/JP2000084928A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003033911A (en) * | 2001-07-24 | 2003-02-04 | Sumitomo Bakelite Co Ltd | Method and device for manufacturing thermosetting- resin molding material |
| JP4655428B2 (en) * | 2001-07-24 | 2011-03-23 | 住友ベークライト株式会社 | Method and apparatus for manufacturing thermosetting resin molding material |
| WO2012065887A1 (en) * | 2010-11-15 | 2012-05-24 | Basf Se | Recycling of cross-linked polyurethanes |
| JP5187603B1 (en) * | 2012-04-25 | 2013-04-24 | 豊 土屋 | Plastic compound and waste treatment, storage container and storage method using the same |
| JP2019077177A (en) * | 2017-10-20 | 2019-05-23 | 株式会社関商店 | Processing method soft urethane waste, manufacturing method of solid fuel, solid fuel, and twin-shaft crusher |
| JP7216401B2 (en) | 2017-10-20 | 2023-02-01 | 株式会社エコ・マイニング | Method for processing soft urethane waste, method for producing solid fuel, and twin-screw crusher |
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