Plaited Privacy Screen with Microperforations for Noise Reduction
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Solution Overview
Problem
Existing privacy screens and fences with plaited bands lack effective soundproofing capabilities despite providing good visual protection.
Innovation Solution
Incorporating a large number of sound-absorbing microperforations into the plaited strips woven into a grid-like basic element, with openings of less than 1 mm in width and uniformly distributed across the surface, enhances sound absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If plaited bands are used to create privacy screens or fences, then visual protection is achieved, but soundproofing capability is insufficient
Solution Approach 1:
The patent applies porous materials by incorporating microperforations (holes with diameter less than 1 mm) into the plaited bands. These microperforations allow sound waves to penetrate the otherwise opaque plaited band and be absorbed by the air pockets and structural voids within the braid, transforming the solid-looking material into an acoustically porous medium that maintains visual privacy while enabling sound absorption.
Solution Approach 2:
The patent creates a composite structure by combining the plaited band material (providing visual opacity and structural integrity) with an air-filled porous network (providing sound absorption). The plaited bands themselves form a composite of solid material and air spaces, and when woven into the grid framework, they create a multi-layered composite system that simultaneously achieves visual privacy and acoustic performance.
2Illumination intensity
If the plaited bands are made opaque for visual privacy, then visual protection is improved, but sound absorption is reduced
Solution Approach 1:
The patent applies local quality by creating regions of different permeability within the plaited bands. The microperforations are distributed throughout the band structure, creating localized channels for sound wave penetration while maintaining overall visual opacity. This allows different regions of the material to serve different functions: the solid plaited structure provides visual privacy, while the microperforated regions provide acoustic permeability for sound absorption.
3Object-affected harmful factors
If microperforations are added to plaited bands for sound absorption, then noise protection is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the plaited band into numerous small microperforations rather than using a few large holes. This segmentation approach allows sound absorption across a broader frequency range and distributes the manufacturing complexity across many small, easily-formed features that can be created through standard punching or drilling processes during normal production.
Solution Approach 2:
The patent applies parameter changes by specifying that the microperforation diameter be less than 1 mm, with preferred ranges of 0.1-0.5 mm. This parameter specification balances sound absorption effectiveness (smaller holes provide better high-frequency absorption) with manufacturing ease (larger holes are easier to create). The defined parameter range allows manufacturers to select appropriate hole sizes based on their capabilities and target acoustic performance.
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 privacy screen with microperforations achieves significantly better sound absorption compared to unperforated or coarsely perforated designs, providing improved noise protection while maintaining visual privacy.
Implementation Method 1
a multiplicity of openings designed as sound-absorbing microperforations are formed in the plaited strip or plaited strips
Implementation Method 2
The microperforation according to the invention achieves a sound-absorbing effect
Data Source
Figure 1~4
Figure 5~6
AI summary
A woven tape for privacy screens or fences, especially for double wire mesh fences, is described, in which a multitude of openings designed as sound-absorbing micro-perforations are formed.