Folding Box Sheet Structure for Stable Glue-Free Processing
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Solution Overview
Problem
Existing folding boxes and cartons face issues such as instability, difficulty in processing, unsightly tuck-in flaps, and the need for lid dust flaps, which affect their appearance and manufacturing efficiency.
Innovation Solution
A sheet for folding boxes or cartons with an elongated main body divided into multiple functional parts, featuring integrated folds and adhesive elements, allowing for stable, flat bottoms and side dust flaps, eliminating the need for lid dust flaps and facilitating efficient machine processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a longitudinally seamed box sheet is used, then the box can be manufactured without glue, but the sheet is very wide and relatively short in height resulting in a long, unstable strip that is difficult to process mechanically
Solution Approach 1:
The patent transitions from a longitudinal seam configuration to a transverse seam configuration, fundamentally changing the orientation of the seam relative to the box dimensions. This dimensional reorientation transforms the long, unstable strip into a more compact, stable structure that is suitable for machine processing while still enabling glue-free manufacturing through the interlocking flap design.
2Ease of manufacture
If a longitudinally seamed box sheet is used, then the box can be manufactured without glue, but the lid curves significantly and the base requires unsightly tuck-in flaps or folded bases
Solution Approach 1:
The patent inverts the traditional approach by positioning the seam transversely rather than longitudinally, and by using interlocking flaps that fold outward rather than requiring inward tuck-in flaps or folded bases. This inversion eliminates the unsightly appearances while maintaining the glue-free manufacturing advantage.
3Adaptability or versatility
If side dust flaps are not possible, then lid dust flaps are required, but lid dust flaps are often not aesthetically desirable
Solution Approach 1:
The patent segments the dust protection function from the lid to the side walls by providing dust flaps on the side walls rather than on the lid. This segmentation allows dust protection to be achieved while maintaining an aesthetically pleasing lid appearance, as the dust flaps are positioned on the less visible side walls.
Data Source
Figure 1
Figure 2a~2b
Figure 3
AI summary
The present invention relates to a method for producing a sheet (1). The method preferably has at least the following steps: separating the main body (4) from a starting substrate (50), in particular from an individual sheet blank or from an endless starting material for sheets, cutting the main body (4) in order to separate the first fixing flap (26) and the third fixing flap (34) from the first functional wall portion (6) and cutting the main body (4) in order to separate the second fixing flap (28) and the fourth fixing flap (36) from the second functional wall portion (12), and producing the folds 1 to 4 and 6 to 15, in particular the folds 1 to 15.