Cellulosic Wiper Microfiber Network for Recyclable Residue Removal
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Solution Overview
Problem
Existing high-efficiency wipers for cleaning surfaces are difficult and expensive to produce, and they are not readily recyclable, while also requiring biocides and cleaning solutions to remove residue effectively.
Innovation Solution
A disposable cellulosic wiper made with pulp-derived papermaking fibers and up to 75% by weight of fibrillated regenerated cellulose microfiber, which forms a high surface area network for effective residue removal with reduced cleaning solution usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If thermoplastic fibers are used to make high efficiency wipers, then cleaning performance is improved, but manufacturing cost increases and recyclability decreases
Solution Approach 1:
The patent changes the material parameter from thermoplastic fibers to cellulosic fibers (wood pulp), fundamentally altering the chemical composition while maintaining the wiper's functional structure. This substitution enables recyclability and reduces manufacturing cost while preserving cleaning effectiveness through optimized fiber morphology rather than material type
Solution Approach 2:
The invention creates a composite structure combining cellulosic fibers with specific surface treatments and fibrillated networks. This composite approach allows the use of recyclable cellulosic material while achieving thermoplastic-like cleaning performance through the integrated fiber network architecture and surface properties
2Reliability
If thermoplastic fibers are used to make high efficiency wipers, then cleaning performance is improved, but environmental sustainability decreases
Solution Approach 1:
The patent fundamentally changes the material composition from non-biodegradable thermoplastic to biodegradable cellulosic fiber, transforming the environmental profile while maintaining cleaning performance through structural optimization rather than material substitution alone
Solution Approach 2:
The invention embraces the disposable nature of wipers by using inexpensive, readily available cellulosic materials that can be easily discarded and naturally decomposed, replacing expensive synthetic materials that persist in the environment
3Ease of manufacture
If conventional wipers are used, then manufacturing cost is reduced, but residue removal effectiveness decreases
Solution Approach 1:
The patent segments the fiber structure into different functional zones and sizes, creating a heterogeneous fiber network with varying lengths and diameters that work together to lift and remove residue particles effectively, maintaining high performance at low cost
Solution Approach 2:
The invention applies local quality variations within the fiber network, creating regions of different fiber density, length, and surface properties that selectively target different types of residue, enhancing overall removal effectiveness without increasing material cost
4Ease of manufacture
If conventional wipers are used, then manufacturing simplicity is maintained, but cleaning solution requirement increases
Solution Approach 1:
The patent enables the wiper to perform cleaning functions through its own structural properties rather than relying on external cleaning solutions. The fibrillated fiber network and surface characteristics provide inherent residue-lifting capabilities, making the wiper effective with minimal or no additional chemicals
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 wiper achieves efficient residue removal with reduced cleaning solution use, is economically produced on conventional equipment, and can be recycled, providing improved cleaning performance and environmental sustainability.
Implementation Method 1
fibrillated regenerated cellulose microfiber, which forms a high surface area network for effective residue removal
Implementation Method 2
fibrillated regenerated cellulose microfiber, which forms a high surface area network for effective residue removal with reduced cleaning solution usage
Data Source
AI summary
A disposable cellulosic wiper includes a percentage by weight of pulp-derived papermaking fibers, and a percentage by weight of regenerated independent cellulosic microfibers having a number average diameter of less than about 2 microns and a characteristic Canadian Standard Freeness (CSF) value of less than 175 ml. The microfibers are selected and present in amounts such that the wiper exhibits a Relative Bendtsen Smoothness at 1 kg of pressure of at least 1.5 as compared with a like wiper prepared without microfibers.