Abstract: In the medical cap comprising a plug 10 made of thermoplastic elastomer and an outer frame 20 made of synthetic resin, the side surface part of the plug is contacted with an inner wall 211 of the side circuit part of the outer frame in a non-fused state and is held in a state with pressure applied from the leg part of the outer frame 22. As a result, the wetted surface of the plug is not flat shaped but has an inclination downward to the circle center. Protrusion 14 can also be provided on the wetted surface and in such a case, the bottom part of the protrusion part that is one part of the wetted surface has an inclination downward to the circle center.

Abstract: The synthetic resin moldings are molded pressing the bottom force 210 to the top force for feeding 103, followed by feeding the melted synthetic resin raw material to the opening portion 2101 of the bottom force 210 through said feeding path 1023 of the top force for feeding 103, thereby filling said synthetic resin in the cavity in the mold CT1 made up by closing the mold with this top force for feeding 103 and the bottom force 210, followed by pushing down the bottom force 210, and extending said synthetic resin raw material contained in said feeding path 1023 and tearing off at the portion X where the raw material has prescribed amount of resin blocks RX for molding, pushing up this bottom force 210 in which these torn resin blocks RX are placed and remained to the top force for molding 104, thereby closing the mold and compressing.

Abstract: In the medical cap comprising a plug 10 made of thermoplastic elastomer and an outer frame 20 made of synthetic resin, the side surface part of the plug is contacted with an inner wall 211 of the side circuit part of the outer frame in a non-fused state and is held in a state with pressure applied from the leg part of the outer frame 22. As a result, the wetted surface of the plug is not flat shaped but has an inclination downward to the circle center. Protrusion 14 can also be provided on the wetted surface and in such a case, the bottom part of the protrusion part that is one part of the wetted surface has an inclination downward to the circle center.

Abstract: The synthetic resin moldings are molded pressing the bottom force 210 to the top force for feeding 103, followed by feeding the melted synthetic resin raw material to the opening portion 2101 of the bottom force 210 through said feeding path 1023 of the top force for feeding 103, thereby filling said synthetic resin in the cavity in the mold CT1 made up by closing the mold with this top force for feeding 103 and the bottom force 210, followed by pushing down the bottom force 210, and extending said synthetic resin raw material contained in said feeding path 1023 and tearing off at the portion X where the raw material has prescribed amount of resin blocks RX for molding, pushing up this bottom force 210 in which these torn resin blocks RX are placed and remained to the top force for molding 104, thereby closing the mold and compressing.