Plaster-Based Acoustic Board with Glass Fiber Textile
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Plaster-based boards lack adequate acoustic performance while maintaining good mechanical properties, and increasing their weight to improve acoustics leads to handling difficulties and higher costs.
Innovation Solution
Incorporating a textile with at least 80% glass fibers and an organic binder into the coating layers or core of the plaster-based board to enhance acoustic properties without compromising mechanical performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the weight per unit area of the board is increased to improve acoustic performance, then acoustic insulation is improved, but handling becomes more difficult and cost increases
Solution Approach 1:
The patent applies composite materials by incorporating textile layers (particularly glass fiber textiles) into the plaster board structure. The board comprises a core made of plaster and at least one textile layer, creating a composite material that achieves improved acoustic insulation without proportionally increasing weight. The textile layers provide acoustic damping and absorption properties while maintaining lighter weight compared to solid plaster increases.
Solution Approach 2:
The patent applies local quality by strategically positioning textile layers within the board structure. The textile layers can be positioned at specific locations (e.g., facing the noise source, at the center, or at the rear) to optimize acoustic performance for specific directions and frequencies. This localized placement of acoustic-enhancing materials improves insulation without requiring uniform weight increase throughout the entire board.
2Object-affected harmful factors
If the weight per unit area of the board is increased to improve acoustic performance, then acoustic insulation is improved, but the cost of the board increases
Solution Approach 1:
The patent uses composite materials combining plaster and textile layers to achieve acoustic insulation at lower cost than increasing plaster content alone. The textile layers (especially glass fiber textiles) provide acoustic benefits while being cost-effective alternatives to adding more expensive plaster material throughout the entire board structure.
Solution Approach 2:
The patent applies local quality by placing textile layers only where acoustic enhancement is most needed, rather than uniformly increasing material throughout the entire board. This selective placement reduces overall material costs while achieving the required acoustic insulation performance at specific critical locations.
3Object-affected harmful factors
If the density of the board is increased to improve acoustic performance, then acoustic insulation is improved, but penetration for attaching becomes more difficult
Solution Approach 1:
The patent uses composite materials where the plaster core provides structural integrity and screw penetration capability, while the textile layers provide acoustic insulation. The plaster core maintains its original penetration characteristics for attaching, while the textile layers contribute to acoustic performance without significantly increasing overall board density or hardness.
Solution Approach 2:
The patent applies local quality by concentrating acoustic-enhancing textile layers in specific regions while maintaining the plaster core's original properties in areas where penetration and attaching are required. This allows acoustic insulation improvement without making the entire board denser and harder to penetrate for screw attachment.
Data Source
AI summary
A plaster-based board includes a core made of plaster positioned between two coating layers, in which a textile including glass fibers and an organic binder constitutes at least one of the coating layers and/or the textile is embedded in the plaster constituting the core. In the textile, the binder includes one or more organic polymers having a glass transition temperature which varies from −10 to +25° C., measured by differential scanning calorimetry according to the standard ISO 11357-1:2009.