Q: How to evaluate the quality of VIG after installation?

A: After installation, VIG quality can be assessed through the following two methods:

1. Visual Inspection:

You can directly identify VIG failure through two visible signs:

Dislodged Support Pillars: The micro-pillars inside the vacuum layer are critical for maintaining the structural integrity of the VIG. If the vacuum layer fails, the atmospheric pressure balance is disrupted, causing the pillars to lose their tension and dislodge. This can be identified by observing shifted or fallen pillars on the glass surface.

Condensation: The core function of the vacuum layer is to block heat transfer. If the vacuum seal fails, air and moisture penetrate the interlayer. When a temperature difference exists across the glass, moisture will condense into water droplets or fog on the inner surface. This is a tell-tale sign of vacuum failure.

2. Professional Instrument Testing:

We are currently developing a portable VIG testing device capable of measuring the U-value on-site, providing a reliable quantitative assessment of the glass quality.