Papermaking Belt With Embedded Sensor Yarns
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Solution Overview
Problem
Papermaking belts used in manufacturing tissue, toweling, and sanitary products have a limited operating lifetime due to inability to measure key physical parameters during use, leading to premature failure and high costs, with resin loss being a primary cause, especially under extreme temperatures and high pressures.
Innovation Solution
A papermaking belt with a framework and reinforcing structure that includes machine direction and cross-machine direction yarns, where at least one warp yarn contains a measuring device to monitor physical characteristics such as temperature, tension, and stress in real-time, providing feedback for process adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional papermaking belts without sensors are used, then the manufacturing process is simpler and less costly, but the belt lifetime is limited due to inability to monitor physical parameters
Solution Approach 1:
The measuring device is embedded within the warp yarn of the belt structure, with the yarn serving as a carrier for the sensor. This nesting approach integrates the measurement functionality directly into the existing belt architecture, allowing real-time monitoring of physical parameters without adding external components that would increase overall complexity.
Solution Approach 2:
The belt structure itself serves dual purposes: it performs the papermaking function while simultaneously housing and protecting the measuring device. The warp yarn acts as both a structural element and a sensor carrier, enabling the system to monitor its own condition without requiring separate monitoring infrastructure.
2Reliability
If no real-time monitoring is implemented, then the manufacturing process is less complex, but resin loss occurs leading to premature belt failure
Solution Approach 1:
The measuring device embedded in the warp yarn continuously monitors physical parameters such as temperature, stress, and strain during belt operation. This real-time feedback enables detection of conditions that lead to resin loss and belt failure, allowing for proactive maintenance or process adjustments to prevent premature failure.
Solution Approach 2:
By embedding the measuring device in advance within the belt structure, the system is prepared to detect and report physical parameter changes before they cause damage. This preliminary monitoring capability allows for early intervention to prevent resin loss and extend belt life.
3Temperature
If expensive high heat resistance filaments are used, then the belt can withstand high temperature drying operations, but the manufacturing cost increases significantly
Solution Approach 1:
The invention changes the functional parameters of the existing warp yarn by integrating measuring devices that can monitor temperature and other physical conditions. This allows the use of standard filaments with adequate heat resistance for the application, rather than requiring expensive specialized high-heat filaments, thereby reducing manufacturing costs while maintaining performance.
Solution Approach 2:
The invention replaces the need for expensive mechanical/material solutions (specialized high-heat filaments) with a sensor-based monitoring approach. By using standard filaments equipped with embedded sensors to monitor physical parameters, the system achieves the same reliability outcome at lower material cost.
Data Source
AI summary
An innovative papermaking belt is disclosed. The papermaking belt has a framework and a reinforcing structure. The framework has a first surface defining a paper-contacting side of the papermaking belt, a second surface opposite the first surface, and conduits extending between the first and second surfaces. The reinforcing structure is positioned between the first surface and at least a portion of the second surface. The reinforcing structure comprises a plurality of machine direction warp yarns interwoven with a plurality of cross-machine direction weft yarns. At least one of the machine direction warp yarns further comprises a measuring device.