Ceiling Tile Non-Uniform Binder Distribution
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Solution Overview
Problem
Conventional ceiling tile manufacturing processes are costly due to high binder content requirements for achieving satisfactory surface hardness and durability, and they do not effectively address noise absorption.
Innovation Solution
A non-uniform distribution of latex binder across the tile thickness, with a higher concentration near the visible face, reduces overall binder content while enhancing surface hardness and noise absorption through a supplemental latex binder layer applied via conventional coating techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If binder content is increased to achieve satisfactory surface hardness and durability, then surface hardness and durability are improved, but manufacturing cost increases
Solution Approach 1:
The patent applies local quality by creating a non-uniform binder distribution where the binder concentration varies through the thickness of the tile. Specifically, the binder concentration is higher near the visible face (0.5-2.0% by weight) and lower in the interior (0.1-0.5% by weight). This allows the surface to have sufficient hardness and durability while reducing overall binder content and manufacturing cost.
2Quantity of substance
If binder content is reduced to lower manufacturing cost, then manufacturing cost decreases, but surface hardness and durability deteriorate
Solution Approach 1:
The patent ensures surface hardness and durability are maintained despite reduced overall binder content by concentrating the binder locally near the visible face. The enhanced binder zone (0.5-2.0% by weight) at the surface provides sufficient hardness and durability, while the reduced binder content in the interior (0.1-0.5% by weight) lowers manufacturing cost.
Solution Approach 2:
The patent addresses the contradiction by moving from a uniform binder distribution (zero-dimensional average) to a non-uniform distribution that varies through the thickness dimension (one-dimensional gradient). This dimensional approach allows optimization of binder content at different depths, ensuring surface performance while reducing overall material cost.
3Ease of manufacture
If uniform binder distribution is used, then manufacturing process is simple, but noise absorption capability is reduced
Solution Approach 1:
The patent enhances noise absorption capability by creating a non-uniform binder distribution that varies through the thickness of the tile. The lower binder concentration in the interior region (0.1-0.5% by weight) maintains higher porosity and better sound absorption, while the higher binder concentration at the surface (0.5-2.0% by weight) provides durability. This local differentiation improves noise absorption without significantly complicating the manufacturing process.
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
This approach reduces manufacturing costs, improves surface hardness and durability, and increases noise absorption capabilities while minimizing paint requirements, resulting in a more durable and sound-absorbing ceiling tile.
Implementation Method 1
a binder such as latex or starch or a combination of the two that serves to hold the other materials together when the board is dried
Implementation Method 2
Layers of felted slurry material are pressed into a mat and dried to form a board
Data Source
AI summary
A ceiling tile product and method in which a slurry formed mat primarily comprising mineral wool and binder is provided with a binder enhancement zone at its face. The binder enhancement zone can reduce the total required latex content, reduce the amount of finish or paint needed to achieve a commercially acceptable color and improve noise reduction.