Abstract: A cap includes a main unit fit onto the mouth of a double-walled container, a spout cylinder provided on the main unit, an inner stopper that is provided in the main unit, and a first inner valve. The inner stopper includes a communicating part that communicates with the inside of the inner container and the inside of the spout cylinder. The first inner valve includes a first valve body that covers the communicating part. The first valve body has passage holes. The first valve body being deformed from a closing position S toward an opening position O keeps acting as a partition between the communicating part and the spout cylinder.

Abstract: A cap includes a main unit fit onto the mouth of a double-walled container, a spout cylinder provided on the main unit, an inner stopper that is provided in the main unit, and a first inner valve. The inner stopper includes a communicating part that communicates with the inside of the inner container and the inside of the spout cylinder. The first inner valve includes a first valve body that covers the communicating part. The first valve body has passage holes. The first valve body being deformed from a closing position S toward an opening position O keeps acting as a partition between the communicating part and the spout cylinder.

Abstract: A cap includes a main unit fit onto the mouth of a double-walled container, a spout cylinder provided on the main unit, an inner stopper that is provided in the main unit, and a first inner valve. The inner stopper includes a communicating part that communicates with the inside of the inner container and the inside of the spout cylinder. The first inner valve includes a first valve body that covers the communicating part. The first valve body has passage holes. The first valve body being deformed from a closing position S toward an opening position O keeps acting as a partition between the communicating part and the spout cylinder.

Abstract: A cap includes a main unit fit onto the mouth of a double-walled container, a spout cylinder provided on the main unit, an inner stopper that is provided in the main unit, and a first inner valve. The inner stopper includes a communicating part that communicates with the inside of the inner container and the inside of the spout cylinder. The first inner valve includes a first valve body that covers the communicating part. The first valve body has passage holes. The first valve body being deformed from a closing position S toward an opening position O keeps acting as a partition between the communicating part and the spout cylinder.

Abstract: In order to provide a check valve capable of sufficiently suppressing the mixing of air into the container even if a certain impact is applied to the container and also capable of stably maintaining good pouring of the content, a check valve 10 of the invention is formed of rubber material and manufactured by integral molding. The check valve 10 has a tubular main body 1 having openings 1a and 1b at opposite ends, a lid 3 arranged to close one opening 1a of the main body 1, and a hinge 5 that connects the main body 1 and the lid 3. The lid 3 has a projection 3a on the side surface 3b, the projection 3a coming in contact with a peripheral edge of the opening 1a of the main body 1.

Abstract: The heat-shrinkable cylindrical label of the invention comprises a laminated substrate made of two or more layers which have an outer layer sheet and an inner layer sheet. In one side end section of this label substrate, an outer layer sheet exposure section having no inner layer sheet is formed. This outer layer sheet exposure section is overlapped with the other end section of the front face of the label substrate to form a center seal section. In such a heat-shrinkable cylindrical label, the center seal section can be formed without interposing the inner layer sheet. Accordingly, the center seal section does not become thick. Thus, a heat-shrinkable cylindrical label having a beautiful external appearance can be provided.

Abstract: The heat-shrinkable cylindrical label of the invention comprises a laminated substrate made of two or more layers which have an outer layer sheet and an inner layer sheet. In one side end section of this label substrate, an outer layer sheet exposure section having no inner layer sheet is formed. This outer layer sheet exposure section is overlapped with the other end section of the front face of the label substrate to form a center seal section. In such a heat-shrinkable cylindrical label, the center seal section can be formed without interposing the inner layer sheet. Accordingly, the center seal section does not become thick. Thus, a heat-shrinkable cylindrical label having a beautiful external appearance can be provided.