Binderless Glass Fiber Web Mechanical Entanglement
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Solution Overview
Problem
Traditional methods for forming packs of fibrous materials rely on wet binders, which are inefficient and require complex washwater systems, whereas the need for binderless or dry binder methods has not been adequately addressed for achieving high strength and insulative performance.
Innovation Solution
A continuous process forming binderless or dry binder-based packs of glass fibers, where long and thin fibers are mechanically entangled to enhance tensile and bond strength, eliminating the need for wet binders and associated systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If wet binders are used to form packs of fibrous materials, then the fibers can be bound together, but the process requires complex washwater systems and becomes inefficient
Solution Approach 1:
The invention extracts and eliminates the wet binder system entirely from the packaging process. Instead of using adhesives that require washwater systems for application and cleanup, the patent employs mechanical entanglement through needle punching to bind fibers directly, removing the problematic wet binder component and its associated complex washwater infrastructure
Solution Approach 2:
The invention replaces the chemical bonding mechanism of wet binders with a mechanical bonding mechanism. Needle punching devices mechanically entangle fibers through physical interlocking, substituting the chemical adhesive system with a purely mechanical fastening system that eliminates the need for washwater applications and simplifies the overall process
2Productivity
If traditional forming processes are used, then packs can be produced, but manufacturing complexity and costs increase due to binder systems
Solution Approach 1:
The invention removes the wet binder application systems, binder storage, and washwater recovery systems from the manufacturing line. This extraction of unnecessary components directly reduces manufacturing complexity and operational costs while streamlining the production process for pack formation
Solution Approach 2:
The invention changes the fundamental bonding parameter from chemical (wet binder adhesion) to mechanical (needle punching entanglement). This parameter change transforms the manufacturing process from a multi-step chemical-physical process to a simpler mechanical process, reducing equipment complexity and improving productivity
3Device complexity
If binderless methods are used, then manufacturing complexity is reduced, but achieving high tensile and bond strength becomes difficult
Solution Approach 1:
The invention introduces dynamic mechanical entanglement through needle punching that creates three-dimensional fiber interlocking. This dynamic mechanical bonding process actively entangles fibers during formation, creating strong bonds without requiring static chemical binders, thus achieving high tensile strength through mechanical means alone
Solution Approach 2:
The invention creates a composite structure through mechanical entanglement where fibers are interlocked in a three-dimensional network. This composite-like structure, formed by needle punching, provides enhanced tensile and bond strength comparable to binder systems but achieved through purely mechanical fiber-to-fiber entanglement
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 process results in packs with improved thermal and acoustic insulative performance, higher tensile and bond strength, and reduced manufacturing complexity and costs by eliminating the need for wet binders and associated systems.
Implementation Method 1
the glass fibers of the binderless webs are mechanically entangled
Data Source
Figure 1A~1B
Figure 1C
Figure 2A~2B
AI summary
Fibrous material webs and methods of making the fibrous material webs. Binderless webs can be formed in a continuous process where fiber material, such as glass is melted and formed into fibers. The fibers are formed into a web of binderless glass fibers or a web with a dry binder. The binderless web or the web with dry binder can be layered and/or the fibers that make up the web can be mechanically entangled, for example, by needling.