Abstract: A blood-viscosity measurement blood collection tube includes a bottomed tube provided with an opening at one end in a length direction and a bottom at the other in the length direction, and a sealing plug. The sealing plug includes a sealing part fitted in the opening of the bottomed tube in a hermetically sealed state, a cap part, and a thin connecting part. The sealing part includes a vertically penetrated insertion hole. The sealing part of the sealing plug is fitted in the opening of the bottomed tube, and an inner space of the bottomed tube is in a negative pressure state. The cap part is configured to be removed from the sealing plug by breaking the connecting part with an external force applied to the cap part, and the insertion hole is exposed at an upper surface of the sealing part when the cap part has been removed.

Abstract: A blood-viscosity measurement method uses a collection tube includes a bottomed tube having an opening at one end in a length direction and a bottom at the other end in the length direction. A sealing plug includes a sealing part fitted in the opening of the bottomed tube in a hermetically sealed state, a cap part, and a thin connecting part. The sealing part includes a vertically penetrated insertion hole and fitted in the opening of the bottomed tube. The method includes collecting blood using a negative pressure state of the inner space, applying an external force to the cap portion to break the connecting part and removing the cap part to expose the insertion hole at an upper surface of the sealing part, and obtaining blood viscosity by causing a viscosity-measurement falling body to fall from the insertion hole, and measuring a fall terminal velocity of the falling body.

Abstract: A tongue and groove arrangement guides an outer cap in an axial direction with respect to an inner cap. When a cap is fixed to a mouth of a container body, the outer cap is located in a direction of separating from the inner cap in the axial direction, and an inner face of a top wall of the outer cap is separated from a valve to urge the valve in a direction of projecting from a discharge hole of an inside plug, causing the discharge hole to close. When the cap is detached and removed from the mouth, the outer cap is moved in a direction of approaching the inner cap in the axial direction, and the inner face abuts the valve urged in a direction of separating from the discharge hole while resisting against an urging member, causing the discharge hole to open.

Abstract: [Problem] It is an object to provide a coating container that can be degassed in the case in which a cap member is detached and removed from the mouth part of a container body for a use. [Means for Resolution] A guiding means for guiding an outer cap member to be movable in the axial direction with respect to an inner cap member is provided. In the state in which the cap member is fixed to the mouth part of the container body, the outer cap member is located in the direction of separating from the inner cap member in the axial direction, and the inner face of the top wall of the outer cap member is separated from the valve element to urge the valve element in the direction of projecting from the discharge hole of the inside plug member, thereby causing the discharge hole to be in the closed state.