Abstract: An easily openable container lid includes a shell and liner. The shell includes a flat circular top wall, a skirt wall having an arcuate part extending arcuately radially outward and downward from the peripheral edge of the top wall in a longitudinal cross sectional view and a linear part extending vertically downward following the arcuate part, and a grip piece extending from the lower end of the skirt wall. The top wall, the skirt wall and at least a base part of the grip piece are integrally formed of a metal sheet, and a pair of scores each composed of first and second portions are formed on the shell. The first portions extend on the skirt wall upward from both sides of the grip piece, and the second portions extend arcuately between the upper end part of the skirt part and the peripheral edge part of the top wall.

Abstract: An easily openable container lid includes a shell and liner. The shell includes a flat circular top wall, a skirt wall having an arcuate part extending arcuately radially outward and downward from the peripheral edge of the top wall in a longitudinal cross sectional view and a linear part extending vertically downward following the arcuate part, and a grip piece extending from the lower end of the skirt wall. The top wall, the skirt wall and at least a base part of the grip piece are integrally formed of a metal sheet, and a pair of scores each composed of first and second portions are formed on the shell. The first portions extend on the skirt wall upward from both sides of the grip piece, and the second portions extend arcuately between the upper end part of the skirt part and the peripheral edge part of the top wall.

Abstract: A method for manufacturing a cap, which can insert a sheet member easily into a predetermined position of an upper part inside a cap body, without causing deformation to the sheet member or the cap body. The sheet member does not separate when a container is brought to reduced pressure. An annular protruding portion protruding on a lower surface side is formed in an annular flat region of a sheet member of an inside plug. After or at the same time that the sheet member is inserted into and installed at a predetermined position within a cap body, the annular protruding portion is pressed axially toward a top panel wall and deformed so as to become close to a flat shape, to enlarge the outer diameter of the sheet member. The inside plug is thereby held to be inseparable from inside a skirt wall and to be axially movable.

Abstract: An easily openable container lid has a shell and a liner embossed on the inner surface of a top panel wall and a pair of scores formed in the shell. The liner is adhered over the entire surface thereof to the inner surface of the top panel wall. At least second portions of the pair of scores are formed by forming grooves on the inner surface side of the shell, and are extended along the peripheral edge of the liner radially outwardly of the liner. Moreover, the liner has a thin-walled central section and a thick-walled peripheral edge section, and is configured to have a downwardly protruding outer sealing ridge formed in a radially outward region of the thick-walled peripheral edge section. The thickness of the thin-walled central section and the thickness of the thick-walled peripheral edge section are set within required ranges.

Abstract: Provided is an airtight container for positive pressure beverage that has a cap which is able to improve airtightness. The airtight container for beverage is provided with a beverage container and a cap. The beverage container has a body portion and a flange. The flange is continuous with an upper portion of the body portion and defines an orifice. The cap is attached to the beverage container so as to seal the orifice. The cap has a liner and an exterior body. The liner has a thin liner portion for sealing a lower side portion of the flange and a thick liner portion for sealing an upper side portion of the flange. The exterior body is fixed to the flange so as to cover the liner from an outer side, in order to seal the orifice together with the liner. The exterior body presses the thin liner portion against the lower side portion of the flange and brings the thin liner portion in close contact therewith.

Abstract: An easily openable container lid has a shell and a liner embossed on the inner surface of a top panel wall and a pair of scores formed in the shell. The liner is adhered over the entire surface thereof to the inner surface of the top panel wall. At least second portions of the pair of scores are formed by forming grooves on the inner surface side of the shell, and are extended along the peripheral edge of the liner radially outwardly of the liner. Moreover, the liner has a thin-walled central section and a thick-walled peripheral edge section, and is configured to have a downwardly protruding outer sealing ridge formed in a radially outward region of the thick-walled peripheral edge section. The thickness of the thin-walled central section and the thickness of the thick-walled peripheral edge section are set within required ranges.

Abstract: A method for manufacturing a cap, which can insert a sheet member easily into a predetermined position of an upper part inside a cap body, without causing deformation to the sheet member or the cap body. The sheet member does not separate when a container is brought to reduced pressure. An annular protruding portion protruding on a lower surface side is formed in an annular flat region of a sheet member of an inside plug. After or at the same time that the sheet member is inserted into and installed at a predetermined position within a cap body, the annular protruding portion is pressed axially toward a top panel wall and deformed so as to become close to a flat shape, to enlarge the outer diameter of the sheet member. The inside plug is thereby held to be inseparable from inside a skirt wall and to be axially movable.

Abstract: A metallic container closure including a shell of a thin metal sheet having a circular top panel wall (7) and a skirt wall (9), and a synthetic resin liner arranged in the shell, the skirt wall (9) having a thread-forming region and an annular groove (17) positioned at an upper end portion of the thread-forming region, wherein an internal pressure release line A extending in the circumferential direction is arranged in the skirt wall (9) at a portion over the annular groove (17), and annular bead (30) is arranged so as to pass through between the internal pressure release line A and the annular groove (17).

Abstract: A metallic container closure comprising a shell of a thin metal sheet having a circular top panel wall 7 and a skirt wall 9, and a synthetic resin liner arranged in the shell, the skirt wall 9 having a thread-forming region and an annular groove 17 positioned at an upper end portion of the thread-forming region, wherein an internal pressure release line A extending in the circumferential direction is arranged in the skirt wall 9 at a portion over the annular groove 17, and annular bead 30 is arranged so as to pass through between the internal pressure release line A and the annular groove 17. The metallic container closure effectively releases the gas when the pressure in the container is elevated and effectively prevents the skirt wall from being deformed at a portion where the internal pressure release line A is formed when it is being wrap-seamed with the mouth-and-neck portion of the container.

Abstract: A metallic container closure including a shell of a thin metal sheet having a circular top panel wall (7) and a skirt wall (9), and a synthetic resin liner arranged in the shell, the skirt wall (9) having a thread-forming region and an annular groove (17) positioned at an upper end portion of the thread-forming region, wherein an internal pressure release line A extending in the circumferential direction is arranged in the skirt wall (9) at a portion over the annular groove (17), and annular bead (30) is arranged so as to pass through between the internal pressure release line A and the annular groove (17).

Abstract: A package comprising a metallic container having a mouth portion and a metallic cap with a liner fitted to the mouth portion, wherein the liner 17 of the cap includes an outer ring 20 hanging down from an outer circumferential end thereof and an inner ring 21 hanging down on the inside of the outer ring 20; the inner surface of the outer ring 20 extends straight in the vertical direction; and a corner portion from the top panel to the skirt is draw-formed while pushing the cap from the upper direction in a state where the open end of the container mouth portion is inserted, so that the inner surface of the outer ring is brought into close contact with the outer surface of the side wall portion formed at the open end of the container mouth portion, an inner protruded portion is formed at the lower end of the inner surface of the outer ring so as to protrude inward, and the inner protruded portion is brought into close contact with the outer side portion of the lower curled portion of the container mouth portio

Abstract: A metallic container closure comprising a shell of a thin metal sheet having a circular top panel wall 7 and a skirt wall 9, and a synthetic resin liner arranged in the shell, the skirt wall 9 having a thread-forming region and an annular groove 17 positioned at an upper end portion of the thread-forming region, wherein an internal pressure release line A extending in the circumferential direction is arranged in the skirt wall 9 at a portion over the annular groove 17, and annular bead 30 is arranged so as to pass through between the internal pressure release line A and the annular groove 17. The metallic container closure effectively releases the gas when the pressure in the container is elevated and effectively prevents the skirt wall from being deformed at a portion where the internal pressure release line A is formed when it is being wrap-seamed with the mouth-and-neck portion of the container.