Insulation Flakes from Paper Sludge for Thermal Control
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Solution Overview
Problem
Current processes for producing cellulose-based thermal and acoustic insulation materials from scrap paper and cardboard are hindered by high organic contamination and the presence of unwanted substances like calcium carbonate and ink, which reduce insulation performance and require sanitization, leading to inefficiencies and increased costs.
Innovation Solution
Utilizing paper sludge from industrial processes that use long fibre cellulose as a direct raw material for producing insulation flakes, without the need for additives, and allowing for the use of additives in both solid and liquid phases at various points in the process to enhance durability and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If scrap paper and cardboard are used as raw material for insulation material production, then waste utilization is improved, but organic contamination and unwanted substances increase
Solution Approach 1:
The patent extracts and removes unwanted substances including inks, adhesives, and contaminants from the recycled paper fibers through advanced pulping and washing processes, separating the harmful components from the usable cellulose fibers to produce clean insulation material
Solution Approach 2:
The patent applies parameter changes by controlling pH levels, temperature, and chemical concentrations during the pulping process to optimize the removal of contaminants while preserving the insulating properties of the cellulose fibers
2Object-affected harmful factors
If sanitization processes are applied to contaminated raw material, then biological contamination is reduced, but production time and costs increase
Solution Approach 1:
The patent performs preliminary sanitization action by incorporating biocides and antimicrobial agents during the initial pulping stage rather than requiring separate post-processing sanitization steps, reducing overall production time while ensuring contamination control
Solution Approach 2:
The patent uses chemical intermediaries such as biocides and preservatives that are introduced during processing to control biological contamination, replacing time-intensive physical sanitization methods with more efficient chemical treatment
3Device complexity
If unwanted substances like calcium carbonate and ink are present in the insulation material, then production complexity is reduced, but insulation performance decreases
Solution Approach 1:
The patent converts the presence of unwanted substances into a benefit by using controlled amounts of certain fillers like calcium carbonate as intentional additives that can enhance fire resistance and structural stability while maintaining insulation performance through optimized formulation
4Strength
If additives and resins are added to confer mechanical characteristics, then mechanical strength is improved, but material purity and insulation capacity are reduced
Solution Approach 1:
The patent creates composite insulation materials by combining recycled cellulose fibers with natural binders and minimal additives that maintain the insulating properties while providing necessary mechanical strength, achieving a balance between structural integrity and thermal performance
Data Source
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AI summary
Process for producing cellulose-based thermal and/or acoustic insulation material, characterised in that said insulation material comprises paper sludge and wherein said insulation material is in form of flakes.