V-Crease Sheet Packaging for Pourable Food Corner Flexibility
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Solution Overview
Problem
Existing sheet packaging materials for pourable food products often suffer from defects at the corners between the side walls and the bottom/top peripheral edges, leading to reduced flexibility and quality in package formation.
Innovation Solution
The introduction of V-shaped crease lines in the packaging material's intermediate region, which delimits the side wall portions, enhances corner flexibility and quality by eliminating continuous longitudinal crease lines, allowing for a round configuration and improved folding at corners without compromising the package's structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If continuous longitudinal crease lines are used in the intermediate region, then the package structure is maintained, but corner flexibility and quality deteriorate
Solution Approach 1:
The continuous longitudinal crease lines in the intermediate region are segmented into separate crease lines that are interrupted at specific points. This segmentation allows the corners to flex and fold properly while maintaining the overall structural integrity of the package through the remaining crease lines.
2Ease of manufacture
If traditional crease patterns are used, then manufacturing simplicity is maintained, but package quality and corner formation deteriorate
Solution Approach 1:
The crease pattern is modified locally at the corner regions where continuous longitudinal crease lines are interrupted. This local modification improves corner quality and folding precision without requiring a complete redesign of the entire crease pattern, thus maintaining manufacturing simplicity while enhancing corner formation.
3Ease of operation
If the intermediate region lacks crease lines, then corner flexibility improves, but package structural integrity deteriorates
Solution Approach 1:
Rather than completely removing crease lines from the intermediate region, the invention segments them into interrupted lines. This provides just enough structural guidance to maintain package integrity while allowing sufficient flexibility for proper corner folding and formation.
Data Source
AI summary
A sheet packaging material for producing a sealed package with a pourable food product; the packaging material has a quadrangular configuration with two boundary edges parallel to a longitudinal direction and two other boundary edges parallel to a transversal direction orthogonal to the longitudinal direction; the packaging material comprises two transversal crease lines extending transversally to the longitudinal direction and dividing the packaging material into: a bottom region containing a bottom crease pattern and configured to form a bottom portion of the package; a top region containing a top crease pattern and configured to form a top portion of the package; and an intermediate region contained between the transversal crease lines and designed to form a main portion of the package having a plurality of side wall portions; the intermediate region further comprises a plurality of V-shaped crease lines having respective vertices located on or adjacent to the transversal crease lines and at given points thereof destined to define the opposite ends of respective lateral edges delimiting the side wall portions of the package; each V-shaped crease line extending in proximity of the respective transversal crease lines.