Rotating Roll Vascular Network for Fluid Deposition
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Solution Overview
Problem
Current methods for depositing absorbent fluids on substrates lack precision and control, leading to uneven distribution, imprecision in registration and overlaying of fluids, and increased production costs due to the inability to separately control multiple fluids in a single device.
Innovation Solution
A system featuring a rotating roll with a vascular network comprising main arteries, capillaries, and fluid exits, allowing for precise control and distribution of one or more fluids on a substrate, enabling efficient and customizable fluid deposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If moving rolls with axial or circumferential fluid flow are used, then fluid delivery is achieved, but fluid distribution becomes uneven and fluid reaching parts of the rolls is limited
Solution Approach 1:
The fluid delivery system is segmented into multiple independent fluid channels that can be separately controlled. Each channel has its own flow control mechanism, allowing precise regulation of fluid distribution across different regions of the roll surface, thereby achieving uniform fluid delivery while maintaining the ability to deliver fluid to all parts of the rolls.
Solution Approach 2:
Different regions of the roll are provided with customized fluid delivery characteristics through locally controlled channels. Each channel can be independently adjusted to provide the desired fluid flow rate and distribution pattern for specific areas, enabling precise control over fluid distribution uniformity while maintaining overall fluid delivery capability.
2Manufacturing precision
If printing plates and flat surfaces are used, then fluid deposition is achieved, but processing speed decreases and precision is reduced at high rates
Solution Approach 1:
The system transitions from static printing plates to dynamic rotating rolls with integrated fluid channels. The fluid channels are positioned to deliver fluid directly at the point of contact with the substrate, allowing high-speed operation while maintaining precise fluid deposition control through active flow regulation during rotation.
Solution Approach 2:
The rotating roll with integrated fluid channels serves as an intermediary between the fluid source and the substrate. This intermediary structure enables simultaneous high-speed substrate movement and precise fluid delivery by controlling fluid flow from the rotating roll surface, eliminating the need for slower printing plate processes.
3Device complexity
If a single device is used for a single fluid, then device simplicity is maintained, but registration and overlaying between multiple fluids becomes imprecise
Solution Approach 1:
Multiple fluid channels are integrated into a single rotating roll device, allowing multiple fluids to be delivered simultaneously in one operation. Each channel maintains independent flow control, enabling precise registration and overlaying of multiple fluids while keeping the overall device structure unified and manageable.
Solution Approach 2:
The rotating roll device is designed with multi-functionality to handle multiple fluids through separate channels within a single device. This universal design allows the same device structure to perform multiple fluid deposition functions with precise registration, eliminating the need for separate single-fluid devices while maintaining device simplicity.
4Manufacturing precision
If multiple devices are used for multiple fluids, then fluid control precision is improved, but production costs and resources increase
Solution Approach 1:
Multiple fluid delivery functions are merged into a single rotating roll device with integrated channels. This consolidation maintains precise fluid flow control for each fluid through independent channel regulation while reducing the total number of devices required, thereby lowering production costs and resource requirements compared to using separate single-fluid devices.
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
The system achieves precise fluid deposition, improved registration and overlaying of fluids, and reduced manufacturing costs by allowing independent control of multiple fluids, enhancing the precision and efficiency of the fluid application process.
Implementation Method 1
a vascular network configured for transporting the one or more fluids in a predetermined path from the interior region to the exterior surface of the rotating roll
Implementation Method 2
The rotating roll has a central longitudinal axis, wherein the rotating roll rotates about the central longitudinal axis
Implementation Method 3
each capillary is attached to one of the main arteries and is in fluid communication with the one of the main arteries and at least one fluid exit through a substantially radial fluid path to form a tree
Data Source
AI summary
A system for dosing one or more fluids on a substrate, the system comprising a rotating roll. The rotating roll has a central longitudinal axis, wherein the rotating roll rotates about the central longitudinal axis; an exterior surface defining an interior region and substantially surrounding the central longitudinal axis; and a vascular network configured for transporting the one or more fluids in a predetermined path from the interior region to the exterior surface of the rotating roll.