Composite Package Sleeve Geometry for Trapezoidal Gable Folding
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Solution Overview
Problem
Existing packaging technologies limit the ability to create packages with complex geometries, particularly in the gable and base regions, restricting design flexibility to angular cross-sectional surfaces and preventing the formation of rounded edges or free forms.
Innovation Solution
A flat-shaped composite material with quadrangular gable surfaces having angles that deviate from 90°, including smaller and larger angles totaling over 360°, combined with stress-relief surfaces and secondary fold lines, allows for the creation of packages with complex geometries and improved air circulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional folding methods with 90° angles are used, then manufacturing simplicity is maintained, but design flexibility and geometric complexity are limited
Solution Approach 1:
The patent applies parameter changes by varying the fold line angles from the conventional 90° to different values (α and β), where at least one angle deviates from 90°. This allows the creation of packages with complex geometries including rounded edges and free forms, directly resolving the contradiction between design flexibility and structural complexity by enabling geometric variation through simple parameter modification.
2Ease of operation
If angular cross-sectional surfaces are used, then manufacturing ease is maintained, but aesthetic appeal and grip comfort are reduced
Solution Approach 1:
By changing the fold line angles to non-90° values, the patent creates packages with curved edges and aesthetically pleasing shapes that are easier to grip. The solution maintains manufacturing simplicity by using the same basic folding process, only modifying the angle parameters, thus resolving the contradiction between ease of operation and ease of manufacture.
3Object-affected harmful factors
If tight packaging without air gaps is used, then space utilization is maximized, but moisture circulation and mold prevention are compromised
Solution Approach 1:
The patent introduces curvature through non-90° fold lines, creating packages with rounded edges and surfaces that generate air gaps between adjacent packages during stacking. This curvature-based design allows moisture circulation while maintaining reasonable space utilization, resolving the contradiction between mold prevention and space utilization by using geometric form rather than loose packaging.
Data Source
AI summary
A flat-shaped composite material is represented and described for manufacturing a package, including: a polymer outer layer, a polymer inner layer, a fibrous support layer, which is arranged between the polymer outer layer and the polymer inner layer. The flat-shaped composite material has a plurality of fold lines, which are arranged and designed such that a closed package can be manufactured by folding the flat-shaped composite material along the fold lines and by connecting seam surfaces of the flat-shaped composite material and a sleeve surface. The sleeve surface includes a front surface, a first side surface, a second side surface, a first rear surface and a second rear surface, and base surfaces. The base surfaces include triangular base surfaces and quadrangular base surfaces and gable surfaces. The gable surfaces include triangular gable surfaces and quadrangular gable surfaces. The base surfaces and the gable surfaces are arranged on opposite sides of the sleeve surface. In order to enable the manufacture of packages with even more complex geometries even in the gable and base region, at least one quadrangular gable surface is provided with two small gable surface angles, which are smaller than 90°, with two large gable surface angles, which are greater than 90°, and with an angle sum, which is greater than 360°. A package sleeve made of a composite material and a package manufactured from the composite material or from the package sleeve are also represented and described.