PROBLEM TO BE SOLVED: To provide a medical cap which prevents the occurrence of a gap due to position displacement between an elastic plug body and a support body, does not cause liquid to leak when a needle is inserted, and is excellent in securing sealability, such as being excellent in a holding force and recovery force against falling off of the needle, and a method for manufacturing the cap.SOLUTION: A medical cap has an elastic plug body 2 and a support body for holding the elastic plug body 2 inside. The support body is provided with a plurality of inner walls 12 which encircle and house the elastic plug body 2 and an outer wall 11 for encircling the inner walls 12. In a gap between the inner walls 12 and the outer wall 11, an inner plug 3 is provided, the inner plug 3 including at least one pressing wall 31 for pressing the inner walls 12 and the elastic plug body 2. The pressing wall 31 is welded on a contact surface between the outer wall 11 and the inner wall 12 and in contact with and welded to the elastic plug body 2 in gaps of the plurality of inner walls 12. The elastic plug body 2 is given pressure from the inner walls 12 and the pressing wall 31.COPYRIGHT: (C)2014,JPO&INPIT【課題】弾性栓体と支持体の位置ズレによる空隙の発生を防止し、針刺し時の液漏れがなく、また針抜けに対する保持力や復元力に優れるなど、密閉性の確保に優れた医療用キャップ及びその製造方法を提供する。【解決手段】本発明の医療用キャップは、弾性栓体2と、前記弾性栓体2を内部で保持する支持体とを有する医療用キャップであって、前記支持体は、前記弾性栓体2を複数で取り囲んで収容する内部壁12と、前記内部壁12を取り囲む外部壁11とを備え、前記内部壁12と外部壁11の間隙には、当該内部壁12及び弾性栓体2を押圧する押圧壁31を少なくとも1つ備えた内栓3が設けられており、前記押圧壁31は前記外部壁11及び内部壁12の接触面と溶着し、かつ、前記弾性栓体2に対しても、複数の前記内部壁12の間隙において接触して溶着しており、前記弾性栓体2は、前記内部壁12及び前記押圧壁31から圧力が加えられている。【選択図】図1
