An opening device of a liquid food container includes a bottom, a main body, and a top part joined to an upper end of the main body and formed with thermoplastic resin. The top part has a lid integrally moulded with thermoplastic resin. The lid divides the top part and includes weakening lines, a fi
An opening device of a liquid food container includes a bottom, a main body, and a top part joined to an upper end of the main body and formed with thermoplastic resin. The top part has a lid integrally moulded with thermoplastic resin. The lid divides the top part and includes weakening lines, a first lid part, a second lid part, and a gripper. A first hinge is formed between the first lid part and the second lid part, the weakening lines are cut when the gripper is pulled up, and the-first lid part rotates on the-first hinge such that the weakening lines open narrowly. A second hinge is formed in an edge of the second lid part, the weakening lines are cut by further pulling the gripper, and the second lid part rotates on the second hinge such that the weakening lines open more widely.
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1. An opening device of a liquid food container comprising: a bottom and a main body formed with a packaging material which is laminated on both sides of a paper substrate with thermoplastic resin; anda top part which is joined to an upper end of the main body and formed with thermoplastic resin, wh
1. An opening device of a liquid food container comprising: a bottom and a main body formed with a packaging material which is laminated on both sides of a paper substrate with thermoplastic resin; anda top part which is joined to an upper end of the main body and formed with thermoplastic resin, whereinthe top part has a lid integrally moulded with the thermoplastic resin and covering a spout, the lid divides the top part and includes weakening lines configured for sealing and adapted to be easily cut, and the lid comprises a first lid part on a front-face side of the container, a second lid part on a rear-face side of the container, and a gripper projected from the first lid part, whereina first hinge is formed between the first lid part and the second lid part, the weakening lines are cut when the gripper is pulled up, and the first lid part rotates on the first hinge such that the weakening lines are cut to open narrowly, and whereina second hinge is formed in an edge of the second lid part by the rear-face side of the container, the weakening lines are cut by further pulling the gripper, and the second lid part rotates on the second hinge such that the weakening lines are cut to open more widely. 2. The opening device of a liquid food container according to claim 1, wherein the first lid part opened narrowly has a detent stopper, and the dimensions of the portion of the opening opened narrowly correspond to the dimensions of a hole for a straw. 3. The opening device of a liquid food container according to claim 2, wherein the top part comprises a shoulder part on the upper end side of the main body, and wherein a neck part projects from the shoulder part. 4. The opening device of a liquid food container according to claim 3, wherein on both sides of the second hinge, the second lid part and the shoulder part have hooks on the rear-face side edge part of the second lid part and on the shoulder part of the top part, respectively, wherein the hooks stop a return of the second lid part widely opened. 5. The opening device of a liquid food container according to claim 4, wherein the gripper has a plate shape and is projected toward a container front from the first lid part. 6. The opening device of a liquid food container according to claim 4, wherein the gripper has a plate shape joined to a first lid part top face, and projected toward a container front. 7. A liquid food container comprising: a bottom and a main body formed with a packaging material which is laminated on both sides of a paper substrate with thermoplastic resin;a top part which is joined to the upper end of the main body and formed with thermoplastic resin; andan opening device, whereinthe top part has a lid integrally moulded with the thermoplastic resin and covering a spout, the lid divides the top part and includes weakening lines configured for sealing and adapted to be easily cut, and the lid comprises a first lid part on a front-face side of the container, a second lid part on a rear-face side of the container, and a gripper projected from the fit lid part, whereina first hinge is formed between the first lid part and the second lid part, the weakening lines are cut when the gripper is pulled up, and the first lid part rotates on the first hinge such that the weakening lines are cut to open narrowly, whereina second hinge is formed in an edge of the second lid part by the rear-face side of the container, the weakening lines are cut by further pulling the gripper, and the second lid part rotates on the second hinge such that the weakening lines are cut to open more widely, and whereinthe gripper has a plate shape joined to a first lid part top face, and projected toward a container front. 8. An opening device of a liquid food container comprising: a bottom and a main body formed with a packaging material which is laminated on both sides of a paper substrate with thermoplastic resin; anda top part which is joined to the upper end of the main body and formed with thermoplastic resin, whereinthe top part has a lid integrally moulded with the thermoplastic resin and covering a spout, the lid divides the top part and includes weakening lines configured for sealing and adapted to be easily cut, and the lid comprises a first lid part in a center of the top part, a second lid part surrounding the first lid part, and a gripper projected from the first lid part, whereina first hinge is formed between the first lid part and the second lid part, wherein when the gripper is pulled up, the first lid part rotates on the first hinge and the weakening line between the first lid part and the second lid part is cut to open narrowly, and whereina second hinge is formed in an edge of the second lid part by the side of the container rear face, wherein when the gripper is further pulled up, the second lid part rotates on the second hinge and the weakening lines between the second lid part and a periphery of the top part are cut to open more widely. 9. The opening device of a liquid food container according to claim 8, wherein the dimensions of the portion of the opening of the first lid part narrowly opened correspond substantially to the dimensions of the hole for a straw. 10. The opening device of a liquid food container according to claim 9, wherein the shoulder part of the top part has a hook which stops return of the second lid part widely opened. 11. The opening device of a liquid food container according to claim 9, wherein the gripper has a shape projected above the container from the first lid part. 12. A liquid food container comprising: a bottom and a main body formed with a packaging material which is laminated on both sides of a paper substrate with thermoplastic resin;a top part which is joined to the upper end of the main body and formed with thermoplastic resin; andan opening device, whereinthe top part has a lid integrally moulded with the thermoplastic resin and covering a spout, the lid divides the top part and includes weakening lines configured for sealing and adapted to be easily cut, and the lid comprises a first lid part in a center of the top part, a second lid part surrounding the first lid part, and a gripper projected from the first lid part, whereina first hinge is formed between the first lid part and the second lid part, wherein when the gripper is pulled up, the first lid part rotates on the first hinge and the weakening line between the first lid part and the second lid part is cut to open narrowly, whereina second hinge is formed in an edge of the second lid part by the side of the container rear face, wherein when the gripper is further pulled up, the second lid part rotates on the second hinge and the weakening lines between the second lid part and a periphery of the top part are cut to open more widely, and hereinthe gripper has a plate shape joined to a first lid part top face, and projected above the container.
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