The present invention relates to an eco-friendly buoy for foam molding and a manufacturing method thereof and, more specifically, to an eco-friendly buoy for foam molding, which is molded through a process of coating a foam body with a coating member in a mold, wherein the foam body is formed by molding a half thereof to form a plurality of hollows therein and then being integrally formed in a cylindrical shape by butt in a state of being double-molded from the outside; and a manufacturing method thereof. The eco-friendly buoy is foamed with expanded polypropylene to form a hollow inside and have fixing grooves on both sides of the outer diameter thereof, is molded in half, is melt-bonded with each other with an adhesive, and coated with a coating member on the outer surface thereof. The present invention foams an inner hollow forming foam body (21), which forms a hollow (24) with a transverse reinforcement band (22) and a plurality of longitudinal reinforcement bands (23), with expanded polypropylene; foams an outer foam body (25) on the outer diameter with expanded polypropylene by supplying the inner hollow forming foam body (21); bonds the outer foam body (25) to be formed in a cylindrical shape; coats the outer foam body (25) with a coating member (40) wherein the coating member (40) is formed into polypropylene and is stretched and welded with a two-line weld line (42) at a welding part (41); thermally shrinks the coating member (40) by heat from a mold heating device in a coating mold; and integrally wraps and fixes the outer foam body (25) by the coating member (40). The eco-friendly buoy of the present invention is able to provide rigidity against wave and shock since an outer diameter of a cylindrical foam body is coated with a coating member made of polypropylene.
본 발명은 발포 성형용 친환경 부표와 그 제조방법에 관한 것으로, 더욱 상세하게는 내부에 다수개의 중공이 형성되도록 절반을 성형한 후 외측에서 이중으로 성형한 상태에서 맞대기로 원통형의 일체형이 되도록 결합한 발포체를 금형에서 코팅부재를 코팅에 의해 코팅하는 과정을 통하여 성형되는 발포 성형용 친환경 부표와 그 제조방법에 관한 것이다.이러한 본 발명은 내부에 중공이 형성되며 외경에 양쪽으로 고정 요홈이 형성되도록 발포 폴리프로필렌으로 발포하여 절반을 성형한 후 서로 접착제와 용융접합하여 외측면을 코팅부재로 코팅하는 친환경 부표에 있어서,가로 보강대(22)와 다수의 세로 보강대(23)로 중공(24)을 형성하는 내부 중공성형 발포체(21)를 발포 폴리프로필렌으로 발포하여 성형한 후 상기 내부 중공성형 발포체(21)를 공급하여 외경에 외부 발포체(25)를 발포 폴리프로필렌으로 발포 성형하고, 상기 외부 발포체(25)를 원통형이 되도록 접합 성형하며, 폴리프로필렌으로 성형하여 연신한 후 용접부(41)에서 2줄 용접선(42)이 용접되는 코팅부재(40)를 외부 발포체(25)에 씌워 코팅 성형금형에서 금형 가열장치로부터 가열에 의해 코팅부재(40)가 열수축되어 외부 발포체(25)를 일체형으로 감싸 고정하는 것을 특징으로 하는 것이다.
Eco friendly buoy for foam molding and its manufacturing method
발포 성형용 친환경 부표와 그 제조방법
2018-11-05
Patent
Electronic Resource
Korean
IPC: | B29D PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE , Herstellen besonderer Gegenstände aus Kunststoff oder aus Stoffen in plastischem Zustand / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B29L INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES , Index-Schema für besondere Gegenstände in Verbindung mit Unterklasse B29C / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |
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