Abstract:
A process for producing polylactic acid resin foam particles for in-mold foam forming from which a polylactic acid resin foam molding excelling in heat resistance and mechanical strength can be obtained by in-mold foam forming. In the process for producing polylactic acid resin foam particles for in-mold foam forming, a rotary blade is rotated at a given rotational frequency while constantly keeping contact with the anterior edge surface of a nozzle mold, and the polylactic acid resin extrudate having undergone extrusion foaming from the nozzle mold and foaming is cut by the rotary blade. Accordingly, the polylactic acid resin extrudate can be securely cut to thereby obtain approximately spherical polylactic acid resin foam particles. Therefore, when the polylactic acid resin foam particles are used in in-mold foam forming, foaming of the polylactic acid resin foam particles occurs substantially uniformly in all directions, so that there can be realized mutual strong thermal fusion bonding integration of foam particles in all directions.
Abstract:
In preferred embodiments methods and apparatuses can produce articles that have formable material. The articles may be mono and multilayer. The articles can be formed by various methods. ® KIPO & WIPO 2007
Abstract:
A long ornament member W1 has an attaching portion 1 and an ornamental portion 3 constituted by vulcanized rubber integrally formed on a surface of the attaching portion 1. The ornamental portion 3 has a surface roughened by plural microcapsules thermally expanded therein, plural concave portions 6a outwardly opened in the microcapsules 6 that burst on or in the vicinity of the ornamental portion 3, and plural projection portions 6b constituted by outwardly swelling the microcapsules 6 expanded in the vicinity of the surface. At least one of plural convex ridges and plural concave grooves are formed on the surface of the ornamental portion 3, the convex ridges extending along at least one of a longitudinal direction and a lateral direction that crosses the longitudinal direction, the concave grooves extending along at least one of the longitudinal direction and the lateral direction.
Abstract:
열가소성 수지 용융물을 기상(氣相) 중에 다이로부터 스트랜드상으로 압출하고, 스트랜드를 물과 계면활성제를 포함하는 욕에 침지시켜 냉각하고, 냉각된 스트랜드를 욕에서 꺼낸 후 입자형으로 절단하는 것으로 이루어지는 열가소성 수지 입자의 제조방법. 상기한 방법에 의해 얻어진 원주형 수지 입자로서, 그 수지 입자의 직경 (D) 에 대한 길이 (L) 의 비 (L/D) 가 1 을 초과하고 5 이하인 열가소성 수지 입자. 상기 열가소성 수지 입자를 겉보기 밀도로 10∼600g/ℓ로 발포시킨 발포 입자.
Abstract:
PURPOSE: A preparation method of foam product is useful for manufacturing high quality foam product with low production cost by using only one foam resin material in various metallic molds for casting the foam product. CONSTITUTION: A preparation method of foam product starts by a first step of obtaining a number of foam resin solid pieces formed below the foaming temperature. In a next step, the solid pieces are provided into a foam cavity. In a third step, by using a heater, the inner side of the cavity should be heated to reach a temperature above the foam temperature and maintain it for a certain time. Finally, the metallic mold is opened and the final foam product is obtained. The solid piece can be pellet type or flake type materials by forming the foam resin into elongated bar and cutting it to any desired size.