Category: Life gt; gt; Common sense of life
Problem description:
When I was in elementary school, I remember that the blackboard was made of glass
In short, it is relatively thick, and if you look carefully, there is a very beautiful snowflake pattern inside
Why is this phenomenon happening?
Analysis:
Laminated glass blackboard
(Patent No.: ***********.6)
This product has a fine and even matte surface, true coloring, fluent writing, and clear handwriting. , a laminated glass blackboard that is easy to wipe, does not break or fall off when subjected to large impact forces. It is composed of a matte glass layer, a black adhesive layer and an off-duty steel layer. The interlayer is made of the entire windshield principle structure, without gluing, and the back piece does not use transparent materials, so the cost is low.
The snowflake pattern is a kind of off-duty steel layer that you have beautified. It was not intentional when making it, that’s all, haha.