Continuous Joint Compound Mixing With In-Line Homogenization
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Solution Overview
Problem
Existing manufacturing processes for joint compound are batch-oriented, leading to manufacturing downtime, inconsistent product quality, and inefficiencies due to varying ingredient properties, requiring additional equipment and facility size, and lacking continuous production capabilities.
Innovation Solution
A system and method for continuously manufacturing joint compound using a continuous mixer and homogenizing device, which mixes wet and dry ingredients together and homogenizes multiple volumetric units to reduce material property variations, allowing for on-the-fly formulation adjustments and quick changeovers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If batch processing is used for joint compound manufacturing, then flexibility in formulation adjustments is maintained, but manufacturing downtime increases and productivity decreases
Solution Approach 1:
The patent implements continuous mixing and processing operations where ingredients are continuously fed into the mixer, processed through homogenizing devices, and packaged without batch interruptions. This eliminates idle time between batches while maintaining the ability to adjust formulations through continuous monitoring and control systems that can modify ingredient ratios in real-time during the continuous process.
2Device complexity
If batch mixing is used, then equipment complexity is reduced, but product quality consistency deteriorates due to varying ingredient properties
Solution Approach 1:
The patent incorporates pre-mixing chambers where dry ingredients are thoroughly mixed before being introduced to the main continuous mixer. This preliminary action ensures uniform distribution of ingredients before the continuous processing begins, reducing variability in the final product while maintaining a relatively simple overall system architecture.
Solution Approach 2:
The continuous manufacturing system includes quality monitoring devices that measure properties of the joint compound in real-time during production. This feedback is used to automatically adjust mixing parameters, ingredient feed rates, and processing conditions to maintain consistent product quality throughout continuous operation, eliminating the need for complex batch-by-batch quality control.
3Manufacturing precision
If additional equipment is added to handle batch processing variations, then product quality can be maintained, but facility size and device complexity increase
Solution Approach 1:
The patent combines multiple functions into integrated continuous processing units. The continuous mixer is directly coupled with homogenizing devices and packaging equipment, eliminating the need for separate batch processing stations, holding tanks, and transfer mechanisms. This integration maintains product quality through continuous processing while reducing the overall number of equipment pieces and facility space required.
4Stability of the object's composition
If batch processing is used, then material property variations can be managed, but manufacturing time and loss of time increase
Solution Approach 1:
The system maintains continuous operation by eliminating idle time between batches. Ingredients are continuously fed, mixed, homogenized, and packaged in an unbroken sequence. The ability to control material property variations is maintained through continuous monitoring and real-time adjustment of process parameters, allowing the system to run continuously without the downtime inherent in batch processing cycles.
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 reduces raw material costs, minimizes microorganism activity, increases equipment availability, lowers labor costs, and enhances product yield by producing consistent joint compound with reduced densification and improved quality.
Implementation Method 1
The continuous mixer is adapted to receive wet and dry ingredients, to mix the wet and dry ingredients together to form a mixed joint compound composition
Implementation Method 2
The homogenizing device is adapted to receive in the homogenizing chamber the mixed joint compound composition from the mixer outlet of the continuous mixer, and to homogenize multiple volumetric units of the mixed joint compound to reduce variation in at least one material property of the mixed joint compound
Implementation Method 3
The rotary mixing element is adapted to impart mixing under shear conditions in the homogenizing chamber by rotating at a speed of 400 rpm or less
Data Source
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AI summary
Embodiments of a system and a method for continuously manufacturing a joint compound can be used to produce ready mix joint compound. The system includes means for continuously mixing wet and dry joint compound ingredients together and means for homogenizing multiple volumetric units of mixed joint compound to reduce variation in at least one joint compound material property (e.g., viscosity) across multiple successively produced volumetric units of mixed joint compound (relating to standard commercial packaging sizes for joint compound, such as five-gallon pails, for example) relative to the material property of the respective multiple volumetric units before passing through the means for homogenizing.