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US 2020/0140171 A1Published application
Packaging container and method of producing same
AssigneeToppan Printing Co., Ltd.
InventorsJunji KIKUKAWA, Koichi HOTTA, Megumi WATANABE
Life of this patent
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Abstract
A packaging container comprises a laminated sheet where at least a substrate, a barrier layer and a sealant layer are laminated together in this order, and the laminated sheet has a stiffness of 1.01 [mN·m] or less measured by a Taber stiffness tester method in accordance with JIS-P8125.
Claims12
A packaging container, comprising:
- a laminated sheet where at least a substrate, a barrier layer and a sealant layer are laminated together in this order, and,
- wherein the laminated sheet has a stiffness of 1.01 mN·m or less measured by a Taber stiffness tester method in accordance with JIS-P8125.
A method of producing a packaging container, comprising the steps of:
- a step of preparing a laminated sheet including a substrate, a barrier layer and a sealant layer laminated together in this order, wherein the laminated sheet is formed in a rectangle having a first direction and a second direction perpendicular to each other, and a front surface portion, a first area and a second area of a bottom surface portion, and a rear surface portion are defined and formed in this order along the first direction;
- a step of folding the laminated sheet in half so that the folded sealant layers face each other, and the front surface portion and the rear surface portion, and the first area and the second area of the bottom surface portion are respectively overlapped with each other;
- a step of forming a blanked portion at both edges of the first area and the second area in the second direction of the first area and the second area by removing part of the both edges of the first area and the second area with the first area and the second area of the bottom surface portion being overlapped with each other;
- a step of folding the first area and the second area inside between the front surface portion and the rear surface portion such that the blanked portions of each of the first area and the second area face each other, and the first area and the second area are overlapped with each other;
- and,
- a step of sealing each sealant layer of the front surface portion and the rear surface portion, each sealant layer of the front surface portion and the first area of the bottom surface portion, each sealant layer of the front surface portion and the second area of the bottom surface portion, and each sealant layer of the front surface portion and the rear surface portion through each of the blanked portions of the first area and the second area at both end portions of the front surface portion and the rear surface portion in the second direction.
3 more elements
A packaging container produced by a method of producing a packaging container, comprising:
- a step of preparing a laminated sheet including a substrate, a barrier layer and a sealant layer laminated together in this order, wherein the laminated sheet is formed in a rectangle having a first direction and a second direction perpendicular to each other, and a front surface portion, a first area and a second area of a bottom surface portion, and a rear surface portion are defined and formed in this order along the first direction;
- a step of folding the laminated sheet in half so that the folded sealant layers face each other, and the front surface portion and the rear surface portion, and the first area and the second area of the bottom surface portion are respectively overlapped with each other;
- a step of forming a blanked portion at both edges of the first area and the second area in the second direction of the first area and the second area by removing part of the both edges of the first area and the second area with the first area and the second area of the bottom surface portion being overlapped with each other;
- a step of folding the first area and the second area inside between the front surface portion and the rear surface portion such that the blanked portions of each of the first area and the second area face each other, and the first area and the second area are overlapped with each other;
- and,
- a step of sealing each sealant layer of the front surface portion and the rear surface portion, each sealant layer of the front surface portion and the first area of the bottom surface portion, each sealant layer of the front surface portion and the second area of the bottom surface portion, and each sealant layer of the front surface portion and the rear surface portion through each of the blanked portions of the first area and the second area at both end portions of the front surface portion and the rear surface portion in the second direction.
3 more elements
Dependencies are inferred from the claim text.