The "bridge" in the name "Broken Bridge Aluminum" refers to the "hot and cold bridge" in the sense of materials science, and the word "broken" means action, that is, "breaking the hot and cold bridge".
Specifically, because aluminum alloy is a metal and conducts heat quickly, aluminum alloy can become a "bridge" for transferring heat when the temperature difference between indoor and outdoor is large. Using this material for doors and windows has poor heat insulation performance. Broken bridge aluminum is to disconnect the aluminum alloy from the middle. It uses hard plastic to connect the broken aluminum alloy into a whole. We know that the thermal conductivity of plastic is obviously worse than that of metal, so that heat can not easily pass through the whole material, and the thermal insulation performance of the material becomes better. This is the origin of the name "broken bridge aluminum (alloy)".
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The advantages of sliding window are simple and beautiful, wide window, large glass block, wide field of vision, high daylighting rate, convenient glass cleaning, flexible use, safety and reliability, long service life, opening in one plane, less occupied space and convenient installation of screen window. The most widely used is the sliding window.
Disadvantages: two windows can't be opened at the same time, only half of them can be opened at most, and the ventilation is poor; Sometimes the sealing is slightly poor.
Sliding window: there are two kinds: left and right, up and down. Sliding window has the advantages of not occupying indoor space, beautiful appearance, economical price and good sealing performance. Adopt advanced slide rail, push it gently and open it flexibly. Using large pieces of glass not only increases indoor lighting, but also improves the overall appearance of the building. The window sash is in good stress state and is not easy to be damaged, but the ventilation area is limited to some extent.