Compact Cardboard Bag-In-Box Case With Reinforced Closures
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Solution Overview
Problem
Existing 'bag-in-box' type packaging using corrugated cardboard for mechanical strength has aesthetic limitations, thickness issues, and restricted printing capabilities, which are not suitable for high-quality presentation and branding.
Innovation Solution
A packaging case made of compact cardboard with a grammage between 300 g/m2 and 500 g/m2, featuring a tubular envelope with reinforced closures and a tamper-evident mechanism, allowing for high-quality printing and robust structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If corrugated cardboard is used for the packaging case, then mechanical strength is improved, but aesthetic appearance deteriorates
Solution Approach 1:
The packaging case uses a composite structure combining corrugated cardboard for structural strength and a separate smooth cardboard insert or coating for aesthetic appearance. This allows the corrugated layer to provide mechanical strength while the smooth outer layer provides the desired aesthetic appearance and surface quality.
2Strength
If corrugated cardboard is used for the packaging case, then mechanical strength is improved, but printing capability deteriorates
Solution Approach 1:
The packaging case employs a composite structure where the corrugated cardboard provides mechanical strength while a separate smooth cardboard layer or coating serves as the printing surface. This smooth outer layer accepts various printing techniques including offset, UV, hot foil, and screen printing, resolving the contradiction between strength and printability.
3Strength
If corrugated cardboard is used for the packaging case, then mechanical strength is improved, but surface smoothness deteriorates
Solution Approach 1:
The packaging case uses a composite structure with corrugated cardboard providing mechanical strength and a separate smooth cardboard insert or coating providing the required surface smoothness. The smooth outer layer ensures perfectly flat surfaces suitable for high-quality presentation and branding.
4Shape
If compact cardboard with higher grammage is used, then aesthetic appearance and printing capability are improved, but mechanical strength deteriorates
Solution Approach 1:
The packaging case combines corrugated cardboard (providing mechanical strength) with smooth cardboard of appropriate grammage (providing aesthetic appearance and printing capability). This composite approach allows each material to contribute its strengths, resolving the contradiction between appearance and structural integrity.
Solution Approach 2:
The packaging case is divided into functional segments: the corrugated cardboard structure handles mechanical strength requirements, while separate smooth cardboard panels or coatings handle aesthetic and printing requirements. This segmentation allows optimization of each component for its specific function.
Data Source
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AI summary
The invention relates to a packaging case (10) and a bag-in-box type packaging, wherein the packaging case: - is made of compact cardboard in the range of 300 to 500 g/m2; - is inscribed, in a transverse plane, in a rectangle having a width and a depth each in the range of 50 to 150 millimetres, and delimits a cross-section in the range of 5,000 to 15,000 square millimetres; - has a longitudinal dimension in the range of 100 to 250 millimetres, and defines an internal space of between 1.2 litres and 3 litres; - has an upper closure flap (52) provided with a thickness reinforcement (70) and a locking tab (80) of the upper closure flap (52); - has lower flaps which are folded transversely at right angles to the longitudinal direction, with overlap, and glued together.