JP3755257B2 - Method for manufacturing recycled sheet from carpet waste - Google Patents
Method for manufacturing recycled sheet from carpet waste Download PDFInfo
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- JP3755257B2 JP3755257B2 JP28606097A JP28606097A JP3755257B2 JP 3755257 B2 JP3755257 B2 JP 3755257B2 JP 28606097 A JP28606097 A JP 28606097A JP 28606097 A JP28606097 A JP 28606097A JP 3755257 B2 JP3755257 B2 JP 3755257B2
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- Prior art keywords
- carpet
- waste
- sheet
- temperature
- resin
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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
-
- 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/16—Fillers
-
- 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
- B29L2031/732—Floor coverings
- B29L2031/7322—Carpets
-
- 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)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【0001】
【発明の属する技術分野】
この発明は、カーペット廃材のリサイクル技術に関する。
【0002】
【従来の技術】
近年、カーペット廃材、特に自動車用途のカーペットのリサイクルに関する需要が高まっている。この種のカーペットは、基布にパイル糸をタフティングしたタフトカーペットや短繊維をニードルで突き固めたニードルパンチカーペットであり、裏面に熱可塑性樹脂の裏打ちを施して、敷設性や物性を改善したものである。
カーペットの廃材は、その生産工程において製品の外周を所要の形状に裁断した後のトリミングロスとして生じ、また自動車等が廃棄される際に敷設されていたカーペットが分別回収されてくるものもある。廃材の組成は、カーペットのパイル糸としてのナイロン、ポリエステル、ポリプロピレン、裏打ちとしてのポリエチレン、エチレン酢酸ビニルなど熱可塑性樹脂を主体にしたものとなる。
【0003】
この種のカーペット廃材をリサイクルするのに従来2つの態様がある。一つにはカーペット廃材を可能なかぎり細かく粉砕し(好ましくはパウダー状に粉砕し)固体の形態を保ったまま、充填材や増量材に用いる例である。例えば、特願昭57−116935号は、車両用カーペットのトリミング屑を再生利用した車両用カーペットおよびその製造方法に関し、カーペットのトリミング屑の再生材よりなる層とバージン樹脂材よりなる層とにより車両用カーペットのバッキングを構成した。これは工程的には簡便なリサイクルであるが、廃材は粉砕物のため二次加工して新たな部材を生産するのは困難で、充填材、増量材以外の利用方法がなく、リサイクル用途に量的な限界があった。
【0004】
カーペット廃材をリサイクルする従来の第2の態様は、主に熱可塑性樹脂を主体としてなるカーペット廃材を加熱して溶融させ、(相溶化剤を混入して)均質化をはかり、リペレット化する例があった。例えば特願平3−208894号はナイロンパイルカーペットの廃材を粉砕し無水マレイン酸変性ポリオレフィンおよびパーオキサイド化合物と溶融混練するものである。この種のリサイクルによれば、得られたリサイクルペレットやリサイクルシートを二次加工することが可能であり、多種で多量のリサイクル用途もある。
【0005】
カーペット廃材を加熱溶融してリサイクルする場合、以下の課題があった。
▲1▼この種のカーペットはバッキングを裏打ちしてあるものが多いが、バッキング材中にしばしば塩素系の難燃剤が混入されている。これは自動車や建築物の燃焼防止に関する安全規格を満たすためのものである。塩素系の樹脂を含んだ廃材を加熱すると、比較的低い温度(約150℃)で分解がおこり、有害の塩素ガスを発する危険性がある。このため従来は、塩素系の難燃剤を含む可能性のあるカーペット廃材をこの種のリサイクルに先立ち分別、除外する必要があった。
▲2▼廃車等から回収してきたカーペットの廃材は、細かな砂等の異物を含んでおり(これらはカーペット廃材に非溶融、非相溶であるが)これを完全に除去してリサイクルに供することは不可能である。異物の多く残存する廃材を(溶融処理して)リペレット化することは、品質に影響するばかりか、加工機械の故障の原因ともなる。また、この種の非相溶、非溶融の混入物としては、カーペットに貼着されるフェルト中の綿繊維などがあるほか、熱可塑性の樹脂であっても、他の樹脂と極端に融点が異なるものが含まれると、一方を溶融させる温度が他の樹脂の分解温度に達してしまうために溶融できず残るものもあった。
▲3▼廃材のリサイクルにかかるエネルギーが多量になりがちで、リサイクルのコストを上昇させる。
【0006】
【発明が解決しようとする課題】
本発明は上記課題に、かんがみなされたものであり、塩化ビニル樹脂等の易分解性の難燃剤を含むカーペット廃材をリサイクルしてリサイクルシートを製造する方法であり、また廃材の中に非溶融の異物を含む場合にもシーティングが可能な製造方法を提供する。
【0007】
【課題を解決するための手段】
課題を解決する本発明の手段は、カーペット廃材からリサイクルシートを製造するに少なくとも以下の、(a)カーペットの廃材粉砕品を5〜50重量%と、充填材0〜80重量%と、温度110℃〜140℃における流動性が、この温度におけるメルトフローレート値(2.16kgf)で1g/10min以上ある非晶性ポリオレフィン樹脂を含むバインダー樹脂15〜50重量%とを混練機にて温度110℃〜140℃の下に、カーペットの廃材のパイル糸の成分が非溶融に残存するように混練する工程と、(b)得られた混練物を押出機に投入し、Tダイからシート状に押し出す工程と、(c)押し出されたシートを圧延する工程、の各工程をもってなることを特徴とするカーペット廃材からリサイクルシートを製造する方法による。本発明によれば、カーペット廃材の到達温度は140℃以下であるので、廃材の中に塩素系等の易分解性の難燃剤が含まれていても、この温度では分解して気化する可能性がない。カーペット廃材の到達温度が110℃に達すると、配合されたバインダー樹脂の可塑性が高まって廃材全体が流動しやすくなるため、廃材中の非相溶、非溶融成分が残存したまま混練することが可能であり、シート押出機によるシーティングを可能とする。このように低い温度で可塑性を高めるためには、バインダー樹脂が低温で流動性に富むものである必要があり、本発明では結晶化度の低い非晶性ポリオレフィン樹脂を配合することによってこれを達成している。カーペット廃材に対して、加圧により自然に昇温できる温度であり、外部よりの熱供給はほとんど必要ないためエネルギー効率にすぐれ、リサイクルのコスト低減が可能である。
【0008】
【発明の実施の形態】
以下、本発明の好適の実施の形態を説明する。
(カーペット廃材)発明に適するのは、熱可塑性樹脂を主体としてなるタフトカーペットやニードルパンチカーペットに熱可塑性の裏打ちを施してなるものである。裏打ち中に充填材を含むものや、裏打ちを介して非熱可塑性の綿フェルト等を分離不能に積層したものも可能である。特に本発明の方法が適するのは、裏打ちの熱可塑性樹脂中に塩素系の難燃剤、塩化ビニル樹脂およびその共重合体等を含む場合や、カーペットに塩化ビニル繊維を含む場合である。具体的な例としては、自動車用のナイロンタフトカーペット(基布がポリエステル、裏打ちがマスバックの場合、その廃材組成は、ナイロン樹脂40〜50重量%、ポリエステル10〜15重量%、エチレン酢酸ビニル樹脂10〜30重量%、炭酸カルシウム10〜40重量%)、ポリプロピレンニードルパンチカーペット(裏打ちポリエチレン樹脂およびSBR系ラテックスの場合、その廃材組成は、ポリプロピレン樹脂20〜50重量%、ポリエチレン樹脂20〜50重量%、SBR樹脂5〜20重量%、塩化ビニル樹脂5〜20重量%)などがある。
【0009】
(充填材)充填材は高比重な特性をもつものが用途に適する。具体的にはCaCO3 、BaSO4 等の分子組成をもつ有機、無機の粒子、タルク、自動車バンパー廃材、金属粉等が可能である。
(バインダー樹脂)非晶性ポリオレフィン樹脂で、110〜140℃の温度で十分な流動性がある(好ましくはこの温度でメルトフローレート1g/10min以上、荷重2.14kgf時)のものを配合するのが適する。特に好ましいのは、宇部レキセン株式会社製の非晶性ポリオレフィン樹脂、商品名APAOである。この樹脂は低温で高い流動性、粘着性をもち、常温でも柔軟な特性を有するために多量の(非溶融、非相溶の)充填材を取り込んで、なお高い流動性を維持できる。
【0010】
(配合)
カーペット廃材は5〜50重量%、充填材は0〜80重量%、バインダー樹脂15〜50重量%が適する。
これらの数値は、経験的に得られたものであり、カーペット廃材の条件によって配合は左右されるが、カーペット廃材や充填材の配合比率が高く、バインダー樹脂の比率が低すぎると、配合された樹脂の流動性が低く、押し出し加工に不適になり、あるいは得られるシートが割れやすいというような不具合を生じる。
バインダー樹脂の比率が高くなるほど、得られるリサイクルシートが高価になってリサイクルの価値が低下する。
【0011】
(混練機)
廃材の混練は、ニーダーによっておこなうのが好ましく、スクリュー式混練機等も用いることが可能である。特に本発明の場合、廃材の到達温度が140℃以下であるので、加圧式ニーダーによりブレードで廃材に剪断力を加えながら攪拌することで、廃材が自己発熱し、加熱を加えなくても目標温度に到達できる。廃材の温度が140℃を超える可能性が有る場合には、ウォータージャケット等を装備して冷却し、廃材温度を110〜140℃に制御する。この温度でカーペット廃材のうち低融点の部分を除いて、融点の高いパイル糸等の成分は非溶融に残存する。
(押出機)
ニーダー等で混練した混練物を押出機によって押し出す。スクリュー押出機、特に2軸テーパー式のものが適する。押し出し速度0.5〜5m/min、Tダイリップ間隔1.0〜10mm。
(圧延)
圧延は圧延ロール(ミラーロールタイプ、内部水冷)で、0.5〜5mmのシートに圧延冷却する。(圧縮率20〜80%)
(得られたシートの評価)
本発明により得られたシートに以下の特徴があった。
厚さは0.5〜5mm、密度1.0〜3.0g/cm3 、触感は柔軟で、常温で多少の塑性がある。外観は均一なシートであるが、内部にカーペット廃材の繊維が残存しているため、靱性があり、ねばり強く折れにくい。
遮音性を測定してみたところ、同じ目付量の塩化ビニル樹脂シートに匹敵する性能があった。
【0012】
【発明の効果】
本発明によれば、従来リサイクルが困難であった塩化ビニル樹脂系の難燃剤等を、非相溶、非溶融に残存させたまま、カーペット廃材をリサイクルシーティングすることが可能である。
得られたリサイクルシートは柔軟性、靱性にすぐれ二次加工することも可能である。また、遮音シートとしてすぐれた性能を発揮し、従来の塩化ビニル樹脂遮音シートを代替することができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a technique for recycling carpet waste.
[0002]
[Prior art]
In recent years, there has been an increasing demand for recycling carpet waste, especially carpets for automotive applications. This type of carpet is a tufted carpet in which pile yarn is tufted on a base fabric or a needle punched carpet in which short fibers are hardened with needles. Is.
The carpet waste material is generated as a trimming loss after the outer periphery of the product is cut into a required shape in the production process, and the carpet laid when the automobile or the like is discarded may be collected separately. The composition of the waste material is mainly composed of thermoplastic resin such as nylon, polyester, polypropylene as carpet pile yarn, polyethylene as backing, ethylene vinyl acetate, and the like.
[0003]
There are two conventional ways to recycle this type of carpet waste. One is an example in which carpet waste is crushed as finely as possible (preferably pulverized into a powder form) and used as a filler or an extender while maintaining a solid form. For example, Japanese Patent Application No. 57-116935 relates to a vehicle carpet using recycled carpet trimming waste and a method for manufacturing the same, and includes a layer made of recycled carpet trimming waste and a layer made of virgin resin material. Constructed for carpet backing. This is simple recycling in terms of process, but the waste material is pulverized, so it is difficult to produce a new member by secondary processing, and there is no use other than fillers and fillers, making it suitable for recycling applications. There was a quantitative limit.
[0004]
The second conventional aspect of recycling carpet waste is an example of heating and melting carpet waste mainly composed of thermoplastic resin, homogenizing (mixing a compatibilizer), and repelletizing. there were. For example, Japanese Patent Application No. 3-208894 pulverizes a waste material of a nylon pile carpet and melt kneads it with a maleic anhydride-modified polyolefin and a peroxide compound. According to this kind of recycling, it is possible to secondary process the obtained recycled pellets and recycled sheets, and there are various and large volume recycling applications.
[0005]
When the carpet waste material is heated and melted for recycling, there are the following problems.
(1) Many carpets of this type are backed by a backing, but a chlorine-based flame retardant is often mixed in the backing material. This is to meet safety standards for preventing combustion of automobiles and buildings. When waste material containing a chlorine-based resin is heated, decomposition occurs at a relatively low temperature (about 150 ° C.), and there is a risk of generating harmful chlorine gas. Therefore, conventionally, it has been necessary to separate and exclude carpet waste materials that may contain chlorine-based flame retardants prior to this type of recycling.
(2) Carpet waste collected from scrapped vehicles, etc. contains foreign matters such as fine sand (although these are non-melted and incompatible with carpet waste), they are completely removed for recycling. It is impossible. Re-pelletizing (melting treatment) waste material with a lot of foreign matters not only affects the quality but also causes a failure of the processing machine. In addition, this type of incompatible and non-melting contaminants include cotton fibers in felts that are stuck to carpets, and even thermoplastic resins have an extremely high melting point with other resins. If different materials are included, the temperature at which one is melted reaches the decomposition temperature of the other resin, so that some cannot be melted and remain.
(3) The amount of energy required for recycling waste materials tends to be large, increasing the cost of recycling.
[0006]
[Problems to be solved by the invention]
The present invention has been considered in view of the above problems, and is a method for producing a recycled sheet by recycling a carpet waste material containing a readily decomposable flame retardant such as a vinyl chloride resin. Provided is a manufacturing method capable of sheeting even when foreign matter is included.
[0007]
[Means for Solving the Problems]
The means of the present invention for solving the problem is that at least the following in manufacturing a recycled sheet from carpet waste material: (a) 5-50% by weight of a pulverized waste product of carpet, 0-80% by weight of filler, and a temperature of 110 A binder resin containing 15 to 50% by weight of an amorphous polyolefin resin having a fluidity at 1 to 10 min at a melt flow rate value (2.16 kgf) at this temperature of 110 ° C. to 140 ° C. at a temperature of 110 ° C. A step of kneading so that the pile yarn component of the carpet waste material remains unmelted at ˜140 ° C., and (b) the obtained kneaded material is put into an extruder and extruded into a sheet form from a T die. a step, by a method for producing a recycled sheet from carpet waste, characterized by comprising with each step process of rolling the sheet extruded (c) According to the present invention, since the temperature reached by the carpet waste is 140 ° C. or less, even if the waste contains a readily decomposable flame retardant such as chlorine, it may be decomposed and vaporized at this temperature. There is no. When the temperature of carpet waste reaches 110 ° C, the plasticity of the blended binder resin increases and the entire waste becomes easy to flow, so it is possible to knead while leaving the incompatible and non-molten components in the waste. And enables sheeting by a sheet extruder. In order to increase the plasticity at such a low temperature, it is necessary that the binder resin has a high fluidity at a low temperature. In the present invention, this is achieved by blending an amorphous polyolefin resin having a low crystallinity. Yes. The temperature of the carpet waste can be raised naturally by pressurization, and almost no heat supply from the outside is required. Therefore, it is excellent in energy efficiency, and the cost of recycling can be reduced.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described.
Suitable for (carpet waste) invention is formed by applying a backing of thermoplastic in tufted carpet or needle punch carpet comprising a thermoplastic resin as a main component. It is also possible to use a material containing a filler in the lining, or a non-separable laminate of non-thermoplastic cotton felt through the lining. The method of the present invention is particularly suitable for the case where the lining thermoplastic resin contains a chlorinated flame retardant, a vinyl chloride resin and a copolymer thereof, or the case where the carpet contains vinyl chloride fibers. As a specific example, a nylon tuft carpet for automobiles (when the base fabric is polyester and the backing is massback, the waste material composition is nylon resin 40 to 50% by weight, polyester 10 to 15% by weight, ethylene vinyl acetate resin 10-30% by weight, calcium carbonate 10-40% by weight), polypropylene needle punch carpet (in the case of backing polyethylene resin and SBR-based latex, the waste material composition is 20-50% by weight polypropylene resin, 20-50% by weight polyethylene resin) SBR resin 5 to 20% by weight, vinyl chloride resin 5 to 20% by weight).
[0009]
(Filler) A filler having high specific gravity is suitable for use. Specifically, organic and inorganic particles having a molecular composition such as CaCO 3 and BaSO 4 , talc, automobile bumper waste, metal powder, and the like are possible.
(Binder resin) A non-crystalline polyolefin resin having sufficient fluidity at a temperature of 110 to 140 ° C. (preferably at this temperature at a melt flow rate of 1 g / 10 min or more and a load of 2.14 kgf) is blended. Is suitable. Particularly preferred is an amorphous polyolefin resin manufactured by Ube Lexen Corporation, trade name APAO. Since this resin has high fluidity and adhesiveness at low temperatures and has flexible properties even at room temperature, it can take in a large amount of (non-melted and incompatible) fillers and still maintain high fluidity.
[0010]
(Combination)
5 to 50% by weight of the carpet waste material, 0 to 80% by weight of the filler, and 15 to 50% by weight of the binder resin are suitable.
These figures are obtained empirically, and the blending depends on the conditions of the carpet waste material, but the blending ratio of the carpet waste material and the filler is high and the blending ratio is too low. The fluidity of the resin is low, making it unsuitable for extrusion processing, or causing problems such as the resulting sheet being easily broken.
The higher the ratio of the binder resin, the more expensive the recycled sheet obtained and the lower the value of recycling.
[0011]
(Kneading machine)
The waste material is preferably kneaded by a kneader, and a screw kneader or the like can also be used. In particular, in the case of the present invention, since the ultimate temperature of the waste material is 140 ° C. or less, the waste material self-heats by stirring while applying a shearing force to the waste material with a blade by a pressure kneader, and the target temperature can be obtained without heating. Can be reached. When there is a possibility that the temperature of the waste material exceeds 140 ° C., it is cooled by installing a water jacket or the like, and the waste material temperature is controlled to 110 to 140 ° C. At this temperature, except for the low melting point portion of the carpet waste, components such as pile yarn having a high melting point remain unmelted.
(Extruder)
The kneaded material kneaded with a kneader or the like is extruded by an extruder. A screw extruder, particularly a biaxial taper type, is suitable. Extrusion speed 0.5-5 m / min, T die lip interval 1.0-10 mm.
(rolling)
Rolling is a rolling roll (mirror roll type, internal water cooling), and is cooled by rolling to a sheet of 0.5 to 5 mm. (Compression rate 20-80%)
(Evaluation of the obtained sheet)
The sheet obtained by the present invention had the following characteristics.
The thickness is 0.5 to 5 mm, the density is 1.0 to 3.0 g / cm 3 , the touch is flexible, and there is some plasticity at room temperature. Although the appearance is a uniform sheet, the carpet waste fibers remain inside, so it is tough and sticky and hard to break.
When the sound insulation was measured, the performance was comparable to a vinyl chloride resin sheet having the same basis weight.
[0012]
【The invention's effect】
According to the present invention, it is possible to recycle and seat carpet waste while leaving a vinyl chloride resin-based flame retardant, which has been difficult to recycle, to remain incompatible and non-melted.
The obtained recycled sheet is excellent in flexibility and toughness and can be secondary processed. Moreover, it exhibits excellent performance as a sound insulation sheet, and can replace a conventional vinyl chloride resin sound insulation sheet.
Claims (1)
(a)カーペットの廃材粉砕品を5〜50重量%と、充填材0〜80重量%と、温度110℃〜140℃における流動性が、この温度におけるメルトフローレート値(2.16kgf)で1g/10min以上ある非晶性ポリオレフィン樹脂を含むバインダー樹脂15〜50重量%とを混練機にて温度110℃〜140℃の下に、カーペットの廃材のパイル糸の成分が非溶融に残存するように混練する工程と、
(b)得られた混練物を押出機に投入し、Tダイからシート状に押し出す工程と、
(c)押し出されたシートを圧延する工程、
の各工程をもってなることを特徴とするカーペット廃材からリサイクルシートを製造する方法。Of at least the following from carpet waste to produce a recycled sheet,
(A) 5 g to 50 wt% of the waste carpet pulverized product, 0 to 80 wt% of the filler , and 1 g of fluidity at a temperature of 110 ° C. to 140 ° C. at a melt flow rate value (2.16 kgf) at this temperature / 10min or more of binder resin containing amorphous polyolefin resin containing 15 to 50% by weight so that the pile yarn component of the carpet waste material remains unmelted at a temperature of 110 ° C to 140 ° C in a kneader. A kneading step;
(B) a step of putting the obtained kneaded material into an extruder and extruding it from a T-die into a sheet;
(C) rolling the extruded sheet ;
A method for producing a recycled sheet from waste carpet material, comprising the steps of:
Priority Applications (1)
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JP28606097A JP3755257B2 (en) | 1997-10-03 | 1997-10-03 | Method for manufacturing recycled sheet from carpet waste |
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JP28606097A JP3755257B2 (en) | 1997-10-03 | 1997-10-03 | Method for manufacturing recycled sheet from carpet waste |
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JPH11105096A JPH11105096A (en) | 1999-04-20 |
JP3755257B2 true JP3755257B2 (en) | 2006-03-15 |
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US6860953B1 (en) * | 1994-02-09 | 2005-03-01 | Collins & Aikman Floorcoverings, Inc. | Process for manufacturing a floor covering having a foamed backing formed from recycled polymeric material |
JP2002088263A (en) * | 2000-09-19 | 2002-03-27 | Sanjou Kogyo Kk | Automotive resin plate |
JP4822088B2 (en) * | 2000-09-26 | 2011-11-24 | 広島化成株式会社 | Carpet mat material recycling method |
FR3011501B1 (en) * | 2013-10-03 | 2015-12-18 | Cera | METHOD FOR PRODUCING A MOTOR VEHICLE FLOOR MAT |
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