Cellulosic Microfiber Wiper for Low-Residue Surface Cleaning
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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 significant amounts of cleaning solutions and potentially irritating biocides to remove residue effectively.
Innovation Solution
A high-efficiency disposable cellulosic wiper incorporating pulp-derived papermaking fibers with a high percentage of fibrillated regenerated cellulose microfiber, which forms a microfiber network that effectively removes residue with reduced cleaning solution usage and enhances surface clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional thermoplastic fiber wipers are used for high-efficiency cleaning, then residue removal capability is improved, but production cost increases and manufacturing complexity increases
Solution Approach 1:
The patent changes the material parameters from conventional thermoplastic fibers to cellulosic fibers with specific properties (lignin content, microfiber content, scattering coefficient) to achieve comparable or superior cleaning performance while using conventional papermaking equipment, thereby reducing production cost and manufacturing complexity
Solution Approach 2:
The patent uses composite cellulosic fiber materials combining different fiber types (wood fibers, hardwood fibers, softwood fibers) with specific ratios and properties to achieve the desired cleaning performance, replacing expensive single-material thermoplastic constructions
2Manufacturing precision
If conventional thermoplastic fiber wipers are used for high-efficiency cleaning, then residue removal capability is improved, but device complexity increases
Solution Approach 1:
The patent simplifies the manufacturing process by changing from complex thermoplastic fiber processing to conventional papermaking processes, using standard equipment to produce cellulosic wipers with controlled fiber composition and properties
Solution Approach 2:
The patent employs disposable cellulosic wipers that can be manufactured economically using conventional papermaking equipment, eliminating the need for complex reusable thermoplastic wiper systems with specialized manufacturing requirements
3Manufacturing precision
If conventional wipers are used for residue removal, then cleaning effectiveness is improved, but loss of substance increases due to higher cleaning solution requirements
Solution Approach 1:
The patent changes the wiper material properties (cellulosic fiber composition, microfiber content, scattering coefficient) to enhance cleaning effectiveness through superior residue capture and suspension, reducing the need for additional cleaning solutions
Solution Approach 2:
The patent converts the potential harm of residue redeposition into a benefit by using cellulosic fibers with high scattering coefficients that effectively suspend and hold fine particles, preventing them from redepositing on the cleaned surface and reducing the need for repeated cleaning with additional solutions
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 needs, is economically produced on conventional equipment, and can be recycled, providing improved surface clarity and reduced biocide requirements.
Implementation Method 1
fibrillated regenerated cellulosic microfiber having a characteristic Canadian Standard Freeness (CSF) value of less than 175 ml
Implementation Method 2
microfiber network that effectively removes residue
Implementation Method 3
pulp-derived papermaking fiber having a characteristic scattering coefficient of less than 50 m2/kg
Data Source
AI summary
A method of cleaning residue from a surface using a disposable cellulosic wiper that includes from about 25% or more by weight of pulp-derived papermaking fibers. The pulp-derived papermaking fibers have a characteristic scattering coefficient of less than 50 m2/kg. The wiper also has from about 25% to about 75% by weight of fibrillated regenerated independent cellulosic microfibers. The fibers are finer than 14 mesh, have a characteristic Canadian Standard Freeness (CSF) value of less than 175 ml, have a number average diameter of less than about 2 microns, and are present in amounts such that the wiper exhibits a scattering coefficient of greater than 50 m2/kg. The wiper is applied, with a predetermined amount of pressure, to a residue-bearing surface. The surface is wiped with the applied wiper to remove residue from the surface, such that the surface has less than 1 g/m2 of residue after being wiped.