Digital Scoring Wheels for Carton Blanks
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Solution Overview
Problem
Current digital carton-making technologies lack the ability to digitally score substrates with infinite variability without degrading the substrate's integrity, as existing methods either cut through or damage the material during the scoring process.
Innovation Solution
A system and method that uses a series of scoring wheels controlled by a .pdf file to create precise fold lines on a substrate, allowing for continuous motion and repositioning to produce desired fold lines, followed by digital cutting to form carton blanks, enabling flexible and efficient production of cartons with varied scoring patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If laser perforation is used to create score lines, then fold lines can be created on the substrate, but the substrate integrity is degraded and damaged
Solution Approach 1:
The patent replaces thermal laser perforation with a mechanical scoring system consisting of a male scoring wheel and a female scoring wheel. The male wheel applies localized pressure to crease the substrate while the female wheel provides support, creating score lines through mechanical deformation rather than thermal cutting. This substitution eliminates substrate damage while maintaining precise fold line creation.
2Manufacturing precision
If conventional digital die cutting is used, then cutting precision is improved, but scoring requires shutdown and make ready operations for each variation
Solution Approach 1:
The patent implements dynamic, adjustable scoring wheels that can be repositioned along the substrate width and length without shutdown. The male and female scoring wheels are mounted on adjustable mechanisms allowing real-time repositioning to create different scoring patterns for various carton designs, enabling continuous production with infinite variability.
Solution Approach 2:
The scoring system is designed as a universal, multi-functional device that can create any scoring pattern required for different carton configurations. The same male and female scoring wheels can be repositioned to accommodate various fold line requirements, eliminating the need for dedicated tooling for each carton variation and enabling a single system to handle diverse production needs.
3Adaptability or versatility
If UV curable materials are applied by inkjet to create scoring rules, then digital die cutting capability is achieved, but the process complexity increases and substrate integrity may be compromised
Solution Approach 1:
The patent extracts the scoring function from the printing process by using separate, dedicated male and female scoring wheels. Instead of relying on UV curable materials applied by inkjet, the system uses direct mechanical contact between the scoring wheels and substrate. This separation simplifies the process by eliminating material application and curing steps, reducing device complexity while maintaining digital adaptability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the production of cartons with precise and varied fold lines without damaging the substrate, allowing for mass production of differently dimensioned cartons with minimal downtime and tooling changes, addressing the limitations of prior digital scoring techniques.
Implementation Method 1
A male scoring wheel applies localized pressure to create a crease or fold line in the substrate
Implementation Method 2
A female scoring wheel is positioned below the substrate to provide support and counter-pressure
Data Source
AI summary
A method and system for digitally scoring a substrate prior to completing a carton blank is disclosed. After digitally printing a substrate, it is processed through a series of scoring wheels, male on top, female wheel on bottom. The scoring wheels (and transfer belts which help move the substrate through the wheels) are controlled from the same computer file used to create the graphic image. Subsequent to the first scoring sequence, the substrate is turned 90 degrees and a second scoring sequence takes place. After the scoring sequences have been performed, the substrate continues to the laser die cutter where the same computer or digital file determines where to physically cut the sheet into a carton blank.