Registered Score Placement in Corrugated Board Conversion
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Solution Overview
Problem
Conventional methods for converting corrugated boards into three-dimensional forms often compromise the structural integrity and visual consistency of the resulting articles due to inadequate consideration of fold, crease, and edge locations, leading to uneven flaps, fishtails, and reduced reuse cycles.
Innovation Solution
The method involves establishing a 'registered modification' on corrugated boards by intelligently locating scores, slits, or slots in relation to the fluted medium's features and geometry, using registration information obtained from engineering data or inspection methods, to ensure consistent mechanical properties and accurate folding processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If scores, slits and slots are formed in corrugated board blanks without consideration of fluted medium location, then converting process is simple and fast, but structural integrity is compromised and outer liner integrity is damaged
Solution Approach 1:
The patent applies preliminary action by establishing registration information about the fluted medium's location and geometry before the converting process begins. This pre-planning allows scores, slits and slots to be strategically positioned to avoid damaging the fluted medium, thereby maintaining structural integrity while enabling efficient conversion processes.
Solution Approach 2:
The patent implements feedback by using inspection methods to detect the actual location and geometry of the fluted medium, then using this information to adjust and optimize the placement of scores, slits and slots. This closed-loop approach ensures that converting operations maintain structural integrity while preserving productivity.
2Strength
If outer liner basis weight is increased to resolve outer liner integrity issues, then outer liner strength is improved, but costs increase and inner liner and fluted medium integrity is compromised
Solution Approach 1:
The patent applies local quality by positioning scores, slits and slots at specific locations relative to the fluted medium rather than uniformly across the board. This strategic localization allows the existing outer liner material to be used more effectively, avoiding the need to increase basis weight while maintaining integrity and reducing material costs.
3Ease of manufacture
If scores are positioned without registration to fluted medium features, then converting process is simpler, but fold, crease and corner uniformity is compromised resulting in visual discord
Solution Approach 1:
The patent applies universality by creating a registration system based on the fluted medium's inherent geometric features that can be applied across different board configurations and converting operations. This universal approach provides consistent fold, crease and corner uniformity while maintaining converting process simplicity through standardized registration procedures.
Data Source
AI summary
Methods, apparatus, and systems increase converting accuracy and consistency of corrugated articles of manufacture such as blanks, intermediates or converted structures to minimize unintended gap variations, fishtail variations and visual discord as well as to minimize unintentional loss of strength due to conversion of such articles. The constitution of converted articles formed from a corrugated board blanks according to the invention comprises at least one intelligently located score, slit or slot (hereinafter collectively “registered modification”) based upon knowledge of the corrugated board's fluted medium, including the absolute relative location of at least one fluted medium feature and/or the fluted medium geometry, such as its pitch.