The use of thermal insulation strips is very common in various buildings. Whether it is tooling or home decoration, thermal insulation strips play a very important role in the insulation of buildings. When choosing insulation strips, you must be careful not to choose inferior insulation strips. The harm caused by inferior insulation strips is very huge. What are the hazards? Let's take a look below.
First of all, the dimensional accuracy of inferior heat insulation strips is unstable, which cannot guarantee the "three characteristics" requirements of insulated aluminum doors, windows and curtain walls. Inferior quality insulation strips are low in raw material costs, complex ingredients, backward extrusion processes, extensive production, insufficient mold design level and other factors, resulting in low product dimensional accuracy. If insulation doors and windows are made through strips, the frame of the doors and windows will be affected. Rainwater penetrates, the heat insulation effect is greatly reduced, and the frame wall is damp and moldy, which affects the appearance of the building.
Secondly, the aging resistance is poor. Tensile strength and aging resistance are directly related to the safety of insulated aluminum doors and windows and curtain walls. The aging resistance of PVC is the worst in the plastic family, and it is toxic.　
Third, the mechanical properties are low.
Fourth, it does not match the linear expansion coefficient of aluminum profiles.
Fifth, it is not safe and environmentally friendly. Counterfeit PVC insulation strips will slowly release poisonous gas during long-term use, because PVC insulation strips are produced with plasticizers (dibutyl terephthalate), anti-aging agents (lead stearate), etc. Some toxic additives are used to enhance its heat resistance, toughness, etc. If the temperature reaches 70°C or higher, PVC will decompose to produce irritating gases such as chlorine and hydrogen chloride, which are toxic.
What I have introduced to you above is the harm caused by inferior heat insulation strips when they are used. In order to avoid these situations, we must pay attention to avoid choosing inferior heat insulation strips.

To buy high-quality insulation strips, go to Tianjin Ruifeng Rubber and Plastic Products Co., Ltd. Our company has more than ten years of industry experience in producing mid-to-high-end insulation strips and has won unanimous praise from many customers over the years.