Roll Core Insert Identification for Authorized Web Dispensing
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Solution Overview
Problem
Conventional automatic dispensers face issues with waste due to inconsistent dispensing of web materials, as they do not account for the characteristics of the material, and existing smart dispensers with RFID or bar code systems are costly and can be circumvented, leading to unauthorized use.
Innovation Solution
An automatic web material dispenser that determines if a roll is approved by comparing a baseline frequency to a changed frequency after loading, using a plug with a metallic feature to modify the electromagnetic field, preventing unauthorized use and adjusting dispensing settings based on the roll's characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RFID smart chips or bar code readers are used to identify approved rolls, then the lockout feature can prevent unauthorized use, but the cost and complexity of the dispenser significantly increase
Solution Approach 1:
The patent extracts the identification function from complex RFID or bar code systems and implements it through a simple metallic feature (such as a metal ring or foil) embedded in the roll core. This metallic feature interacts with an electromagnetic field generated by the dispenser to produce a detectable signal, enabling roll identification without requiring sophisticated readers or tags.
Solution Approach 2:
The patent employs inexpensive metallic features (metal rings, foil, or particles) embedded in disposable roll cores rather than expensive, reusable RFID tags or bar code labels. These simple metallic elements provide sufficient identification capability for the lockout feature while keeping both roll and dispenser costs low.
2Adaptability or versatility
If RFID smart chips are embedded in roll cores, then product information can be read to adjust dispensing settings, but the cost of each roll increases significantly
Solution Approach 1:
The patent replaces expensive RFID smart chips with inexpensive metallic features (rings, foil, or particles) embedded in disposable roll cores. These simple metallic elements provide the necessary identification capability for adjusting dispensing settings without the high cost associated with electronic RFID tags.
Solution Approach 2:
The patent creates a simplified version of RFID functionality using basic electromagnetic induction principles. Instead of using complex electronic chips, it employs passive metallic features that can be detected through their interaction with electromagnetic fields, providing a cost-effective copy of the identification and data storage function.
3Reliability
If bar code readers are used to verify approved rolls, then unauthorized rolls can be prevented from dispensing, but the system can be easily circumvented by removing or transferring bar codes
Solution Approach 1:
The patent merges the identification feature directly into the roll core structure itself, rather than using separate, removable labels or tags. The metallic feature is embedded within the core material or attached permanently to it, making it difficult to remove or transfer without damaging the roll structure.
Solution Approach 2:
The patent converts the potential harm of removable identification elements into a benefit by using the roll core structure itself as the carrier for the metallic identification feature. The structural integrity of the core provides security against tampering, while the metallic feature maintains electromagnetic detectability for the lockout function.
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
This solution effectively prevents unauthorized use and optimizes dispensing by ensuring only approved rolls are used, reducing waste and operational costs while maintaining the advantages of smart dispensing systems.
Implementation Method 1
a coil (44) that generates an electromagnetic field. When a roll having an inductive element, e.g., a ring of conductive material or a plug having a conductive element, associated therewith is brought into proximity of coil (44), preferably by mounting the roll on hub (34), the mutual inductance between the coil (44) and the inductive element will cause the oscillator to generate a waveform having a different frequency than that of the base system frequency
Data Source
AI summary
An automatic product dispenser determines if the roll loaded into the dispenser is approved for use with the dispenser. The core of a roll receives a plug that engages a hub within the dispenser. The plug has a feature that alters an electromagnetic field created proximate the hub. The alteration of the electromagnetic field may then be used to determine if the plug, and thus the roll, is usable with the dispenser.