Non-Ablating Creasing for Foldable Substrates
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Laser scoring processes compromise the structural integrity of thinner substrates like thin cardboard or paper-based materials by removing material and creating uneven weaknesses, which can affect the final design of foldable structures.
Innovation Solution
A creasing system with non-ablating creasing members, such as rollers and gears, applies creases in multiple directions to create uniform lines of weakness in substrates, allowing for the formation of three-dimensional structures without material removal or distortion, using a drive mechanism to move the substrate and position creases along specific axes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If laser scoring is used to create creases in the substrate, then the substrate can be folded along the score lines, but material is removed and the substrate structure is weakened
Solution Approach 1:
The patent replaces the laser-based thermal/mechanical removal system with a purely mechanical pressing system. A press member applies localized pressure to the substrate surface to create creases without removing material. This mechanical substitution eliminates the harmful material removal effect while achieving the desired creasing function, thereby maintaining substrate structural integrity.
Solution Approach 2:
The invention extracts and eliminates the material removal function from the creasing process. Instead of using laser ablation that removes substrate material, the system uses controlled mechanical pressure to indent the substrate. This extraction of the harmful material removal aspect allows creasing to proceed without compromising substrate strength.
2Ease of operation
If laser scoring removes material to create creases, then folding is facilitated, but uneven weaknesses are created that compromise the final design
Solution Approach 1:
The patent applies local quality by concentrating the creasing action at the precise location where the press member contacts the substrate. The press member is positioned to apply pressure only at the desired crease location, creating a localized indentation with uniform characteristics. This localized mechanical action ensures consistent crease quality without the uneven weaknesses produced by laser scoring.
Solution Approach 2:
The invention changes the physical parameters of the creasing process from thermal/laser-based material removal to mechanical pressure-based indentation. By controlling parameters such as press member force, contact area, and substrate support conditions, the system achieves uniform creases with consistent depth and shape, eliminating the variability and unevenness associated with laser scoring.
Data Source
AI summary
A system for forming a foldable printed substrate includes a creasing system that applies a plurality of creases to the substrate along a first axis. It also applies a plurality of creases to the substrate along a second axis that is angled with respect to the first axis. Each creases is applied in a manner that does not ablate the substrate. The system also may include a cutting system to yield a foldable substrate such as a carton, sleeve, or box. It also may include a printing system to generate a printed, foldable substrate.