Defibrating Fiber Body Moisture Control
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Solution Overview
Problem
Current defibration methods for recycling waste paper require high energy to break hydrogen bonds in celluloses and often result in inefficient energy usage and fiber entanglement, which affects the quality and efficiency of the recycling process.
Innovation Solution
A method and device for defibrating fiber bodies by supplying a liquid with a specific moisture content and tensile strength, followed by a defibrating step, where the liquid is applied to reduce the fiber body's tensile strength to 60.0% or less and moisture content to 13.5% to 45.1%, facilitating efficient defibration and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional defibration methods are used to break hydrogen bonds in celluloses, then defibration can be achieved, but large electric power is required leading to high energy consumption
Solution Approach 1:
The patent changes the physical-chemical parameters of the fiber body by controlling moisture content (13.5% to 45.1%) and tensile strength (60.0% or less) before defibration. This prepares the fiber body in a specific state that requires less energy for breaking hydrogen bonds during defibration, resolving the contradiction between energy consumption and defibration efficiency
Solution Approach 2:
The patent performs preliminary treatment by supplying liquid to the fiber body to adjust its moisture content and tensile strength before the actual defibration process. This preliminary action reduces the energy required during the main defibration step while ensuring effective fiber separation
2Productivity
If liquid is supplied to reduce tensile strength to 60.0% or less, then defibration efficiency is improved, but moisture content must be precisely controlled
Solution Approach 1:
The patent defines specific parameter ranges for moisture content (13.5% to 45.1%) and tensile strength (60.0% or less) that optimize defibration efficiency. By establishing these precise parameter boundaries, the patent balances the need for high productivity with the requirement for manufacturing precision in controlling moisture content
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 method and device enable efficient defibration with reduced energy usage, minimizing fiber entanglement and improving the quality of recycled paper products by optimizing the moisture and tensile strength conditions during the defibration process.
Implementation Method 1
a large electric power is required to cleave the hydrogen bonds of celluloses
Implementation Method 2
the liquid is supplied to the fiber body so that a moisture content of the fiber body immediately before defibrated is 13.5% to 45.1%
Data Source
AI summary
A method for defibrating a fiber body includes: a supply step of supplying a liquid to a fiber body containing fibers; and a defibrating step of defibrating the fiber body to which the liquid is supplied, and in the supply step, the liquid is supplied to the fiber body so that a rate in tensile strength of the fiber body immediately before defibrated in the defibrating step to the fiber body before the liquid is supplied thereto is 60.0% or less.