METHOD FOR MANUFACTURING SUBSTRATE-INTEGRATED GASKET

• Main Authors: KUROKI YUICHI, KOGA SHOTARO
• Format: Patent
• Language: English; Korean
• Published: 22.12.2015
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BASIC ELECTRIC ELEMENTS; ELECTRICITY; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

성형시에 있어서의 고무 버(burr)의 발생을 억제함에 따라, 버의 제거나 금형 청소를 위한 공정수를 삭감할 수 있으며, 아울러, 성형 재료의 폐기량을 삭감하는 것이 가능하고, 더욱이 금형을 이용하여 복수의 개스킷을 동시에 성형할 때 금형이 평면 상 대형화되지 않으며, 이에 따라, 제조 효율이 좋은 기재 일체형 개스킷의 제조 방법을 제공한다. 상기 목적을 달성하기 위해, 셀룰로오스를 주성분으로 하는 펄프 섬유로 이루어진 섬유 기재와 고무상(狀) 탄성체로 이루어진 개스킷 본체를 고무 함침(含浸)에 의해 일체화하는 기재 일체형 개스킷의 제조 방법으로서, 복수 단(段)의 고무 금형에 의한 사출 성형을 실시함으로써 기재 일체형 개스킷을 복수 개 얻는다. 또한, 금형에 있어서의 고무 재료 유동 경로를 폐색(閉塞)한 섬유 기재에 대해 고무 재료를 그 사출압(射出壓)으로 관통시킴으로써 복수 단의 금형 캐비티에 고무 재료를 충전(充塡)한다. The purpose of the present invention is to provide a method for manufacturing substrate-integrated gaskets, the method having good production efficiency because: the generation of rubber burrs during molding is limited, thereby making it possible to reduce man-hours for burr removal and mold cleaning; it is also possible to reduce the amount of molding material that is discarded; and the planar size of the mold is not increased when multiple gaskets are molded simultaneously using a mold. To achieve said purpose, the present invention is a method for manufacturing substrate-integrated gaskets in which a fiber substrate, which is obtained from pulp fibers having cellulose as the main component, and a gasket body, which is obtained from a rubber-like elastic body, are integrated by rubber impregnation. Multiple substrate-integrated gaskets are obtained by executing injection molding using a multi-level rubber mold. Moreover, the rubber material is filled into the multi-level mold cavities by forcing the rubber material, using the injection pressure thereof, to pass through fiber substrates that are blocking the rubber material flow channels in the mold.