ECO-FRIENDLY POLYPROPYLENE BUOY, AND METHOD FOR PRODUCING SAME

The present invention relates to an eco-friendly polypropylene buoy, and a method for producing same. A marine buoy according to the present invention comprises a foam core layer, the foam core layer comprising: a polypropylene resin containing at least one from among homopolymer polypropylene (homo...

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Bibliographische Detailangaben
Hauptverfasser:	LEE, Eung Kee, KIM, Hyo Shik
Format:	Patent
Sprache:	eng ; fre ; kor
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING AGRICULTURE ANIMAL HUSBANDRY CARE OF BIRDS, FISHES, INSECTS CHEMISTRY COMPOSITIONS BASED THEREON EQUIPMENT FOR SHIPPING FISHING FORESTRY GENERAL PROCESSES OF COMPOUNDING HUMAN NECESSITIES HUNTING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES METALLURGY NEW BREEDS OF ANIMALS ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR RELATED EQUIPMENT SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SHIPS OR OTHER WATERBORNE VESSELS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TRAPPING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	The present invention relates to an eco-friendly polypropylene buoy, and a method for producing same. A marine buoy according to the present invention comprises a foam core layer, the foam core layer comprising: a polypropylene resin containing at least one from among homopolymer polypropylene (homo PP) resin and propylene-ethylene copolymer resin; and an additive containing at least one from among ethylene propylene diene monomer (EPDM) rubber and polyolefin elastomer (POE). The present invention employs a continuous process using a polypropylene foam extrusion method to produce buoys comprising a highly-foamed foam core layer and non-foam thin skin layer, thus can provide buoys that can be produced with high productivity and at low unit cost, and can provide a production method therefor. La présente invention concerne une bouée en polypropylène respectueuse de l'environnement, et un procédé de production de cette dernière. Une bouée marine selon la présente invention comprend une couche de cœur en mousse, la couche de cœur en mousse comprenant une résine de polypropylène contenant une résine d'un homopolymère du polypropylène (homo PP) et/ou une résine d'un copolymère propylène-éthylène ; et un additif contenant un caoutchouc éthylène-propylène-diène-monomère (EPDM) et/ou un élastomère de polyoléfine (POE). La présente invention utilise un procédé continu faisant appel à un procédé d'extrusion de mousse de polypropylène destiné à produire des bouées comprenant une couche de cœur en mousse fortement expansée et une couche de peau mince non-expansée, et permet donc d'obtenir des bouées qui peuvent être produites avec une grande productivité et pour un faible coût unitaire, et peut également fournir un procédé de production associé. 본 발명은, 친환경 폴리프로필렌 부표 및 그 제조 방법에 관한 것이다. 본 발명에 의하면, 해상용 부표에 있어서, 발포 코어층을 포함하고, 상기 발포 코어층은 호모 폴리프로필렌(homopolymer polypropylene, homo PP) 수지 또는 프로필렌-에틸렌 공중합(propylene-ethylene copolymer) 수지 중 적어도 하나를 포함하는 폴리프로필렌 수지; 및 에틸렌 프로필렌 고무(ethylene propylene diene monomer rubber, EPDM 고무) 또는 폴리올레핀 엘라스토머(polyolefin elastomer, POE) 중 적어도 하나를 포함하는 첨가제로 구성된 해상용 부표가 제공된다. 본 발명은 폴리프로필렌 발포 압출 공법을 사용하여 고배율 발포 코어층 및 박막의 비발포 스킨층을 포함하는 부표를 연속 공정으로 제조함으로써, 생산성이 높고 제조 단가가 낮은 부표 및 그 제조방법을 제공할 수 있다.