JINWU GLASS FIBER CO.,LTD.

Analysis of Light and Heat Performance Differences of Sunshade Fabrics with Different Openness Rates


The openness rate of sunshade fabrics directly determines their light-shielding, air permeability, and thermal regulation performance. Different pore ratios can meet diverse application scenarios.

 

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0% Openness Rate (Fully Enclosed Fabric)

 

Provides 100% light-shielding, completely blocking ultraviolet (UV) and visible light.

 

Suitable for bedrooms or cinemas requiring total darkness.

 

Drawback: Poor air circulation due to fully closed structure, prone to stuffiness in summer.

 

1%-3% Openness Rate (Micro-Porous Fabric)

 

Maintains over 90% light-shielding rate while enabling air convection through micron-sized pores.

 

Effectively blocks direct sunlight and enhances energy efficiency when used with air conditioning.

 

Commonly applied in external sunshade systems of office buildings.

 

5% Openness Rate (Semi-Transparent Fabric)

 

Allows soft diffused light to enter while blocking strong glare, balancing light transmission and space transparency.

 

UV blocking rate remains above 85%.

 

Ideal for commercial showrooms or open-plan offices.

 

10% Openness Rate (Highly Transparent Fabric)

 

Creates visible light spot transmission, suitable for spaces requiring natural daylighting with reduced sunlight intensity.

 

Filters 50%-70% of solar radiant heat; paired with indoor plants, it creates a comfortable light-shadow ambiance.

 

Common in cafes, sunrooms, and other leisure spaces.

 

Practical Considerations: Integrate building orientation, climatic conditions, and usage requirements to achieve optimal balance of light and heat environments through precise control of openness rates.