Dry Solid Additive Delivery System Rectangular Discharge
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Solution Overview
Problem
Existing dry solid additive delivery systems for making articles of manufacture, such as fibrous structures, face challenges with high mechanical complexity, low throughput, and formation issues due to clumping and agglomeration of dry solid additives like fibers.
Innovation Solution
The introduction of an article of manufacture making system with a dry solid additive delivery system that minimizes the Stokes Number of dry solid additives to less than 2000, reducing mechanical complexity and preventing clumping and agglomeration issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If dry solid additive delivery systems use conventional air conveying methods with round cross-section discharge, then the system structure is simple, but the dry solid additives cannot be spread across wide length for fibrous structure formation
Solution Approach 1:
The patent transforms the conventional round cross-section discharge into a rectangular cross-section discharge, changing the geometric dimension from circular to rectangular. This dimensional change allows the dry solid additives to be spread across a wider area (e.g., 10 feet or more in width) while maintaining system simplicity, eliminating the need for complex corrective redistribution mechanisms.
2Manufacturing precision
If dry solid additive delivery systems use multiple rotors and cross flow members to prevent clumping, then individualization quality improves, but mechanical complexity increases significantly
Solution Approach 1:
The patent removes the complex mechanical components (rotors, cross flow members, pinned rollers) from the delivery system. By extracting these unnecessary elements and relying instead on the rectangular cross-section air stream configuration, the system achieves individualization quality without mechanical complexity, maintaining reliability and reducing maintenance needs.
3Productivity
If dry solid additive delivery systems use conventional air conveying with round discharge, then the system is simple to operate, but throughput remains relatively low
Solution Approach 1:
By changing the discharge cross-section from round to rectangular, the system increases the effective spread width and distribution area of dry solid additives. This dimensional change enhances throughput capability without adding mechanical complexity, allowing high-volume production while maintaining system simplicity and operational ease.
4Area of stationary object
If dry solid additive delivery systems use corrective actions like pinned rollers to spread additives, then spread width improves, but mechanical complexity and reliability issues increase
Solution Approach 1:
The patent eliminates corrective mechanical actions (pinned rollers, rotating devices) by using the rectangular cross-section air stream configuration. This extraction of unnecessary components improves reliability by removing parts that can fail, while still achieving the required spread width through the optimized air flow geometry.
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 approach enhances the reliability and quality of the article of manufacture by improving throughput, reducing contamination risks, and ensuring consistent formation of fibrous structures without the need for corrective actions that increase mechanical complexity.
Implementation Method 1
a non-liquid fluid, such as air, is used to convey dry solid additives
Implementation Method 2
the Stokes Number of the dry solid additives within the dry solid additive delivery system has a value of less than 2000
Data Source
AI summary
An article of manufacture making system for making an article of manufacture containing a plurality of dry solid additives, such as fibers, that utilizes a dry solid additive delivery system with a relatively low Stokes Number for the dry solid additives.