Sliding Glass Door and Frame

Configuration of the key thermal bar is the core component to strengthen the performance of the system windows and doors, which not only affects the structural bearing of the profile, but also has an essential impact on the wind pressure resistance, watertightness, airtightness, heat preservation, thermal insulation and other basic five functions of the windows and doors, and plays a vital role in the quality of the system windows and doors.

Thermal insulation broken bridge aluminium doors and windows 'thermal insulation strip' configuration quality varies, common application categories are broadly divided into two categories: PVC and PA66.

PVC: the main material for the PVC resin powder, into the twenty-five per cent of calcium carbonate and become, low cost, lightweight, poor strength, easy to age, insufficient load-bearing, shrinkage ratio, poor thermal stability, high temperature or combustion will produce toxic gases.

PA66: a metaphor for a plastic alloy properties, with good anti-aging properties, high strength, high melting point, coefficient of expansion is small, with high heat resistance. The most important thing is a long and stable service life!

Visual observation: PA66 insulation strip surface is a frosted texture, the colour is black, the product cross-section smooth and delicate; PVC colour is usually grey-black, white, the surface looks very smooth product cross-section is relatively rough.

Fire: PA66 belongs to the flame retardant products, fire is not ignited, away from the fire self-extinguishing; PVC fire can be easily ignited, burning air will emit heavy plastic toxic gases.

Folding: PA66 broken bridge insulation strip folded one to two times that will break broken, broken when the sound of crisp, folded neatly after the incision is not cracked deformation, can be neatly docked together. The PvC insulation strip needs to be repeatedly folded more than ten times before breaking, after breaking the fracture white rough deformation.

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