The sealing tape has the function of sound insulation, dustproof, antifreeze and heat preservation.
Sealing strip should be waterproof, sealing and the important role of energy conservation, it has the function such as sound insulation, dust-proof, antifreeze, warm, at the same time also has the very strong tensile strength, good flexibility, more need good temperature resistance and aging resistance. At present, the sealing strip market generally has modified PVC, vulcanized EPDM rubber seal strip and thermoplastic EPDM/PP rubber strip.
The classification and characteristics of the sealing strip.
According to statistics, the energy consumption of buildings in our country accounts for 27.5% of the total energy consumption of the whole society, and the energy of the gap loss through closed doors and Windows is usually about 37-40% of the building energy consumption. Therefore, it is very important to improve the sealing performance between the window frame and window frame.
1. Modified PVC tape.
Modified PVC strip: prices are relatively low, due to the different quality, low-end products due to the use of waste materials, alternative plasticizer, and high filling amount, the elastic strip is poor, prone to hard, barbed nose smell, easily moved frame material yellowing, short service life. Since PVC products contain halogens, which contain heavy metals in stabilizers, it is not conducive to environmental protection. Therefore, the use of PVC strips has been eliminated or restricted by foreign developed countries as well as domestic Beijing and coastal cities.
2. Tri-propylene sulfide seal strip.
Vulcanized epdm rubber sealing strip, stronger than PVC strip in sealing elastic persistence, but because need microwave vulcanization line shape, high energy consumption of the process, usually is the 20 times above of PVC processing, the product is not recycling, not environmental protection, is not a product of the national advocacy. So the basic doors are not used.
The product features of the sealing strip are:
1. Light weight, large scale, non-absorbent (alternative to traditional three - oil four felt, bituminous wood and other materials). Product environmental protection, construction is simple, impervious, leakproof, water stop effect is good.
2. The corrosion resistance, ageing resistance, resistance to high and low temperature 80 ℃ ~ + 45 ℃ not flowing, do not deformation, not brittle, long service life.
3. Independent opening bubble structure, special type joint plate appearance for honeycomb holes evenly distributed, without a hair can be closely with cement/sealant adhesion, changes to adapt to the natural expansion shrinkage, enhance joint seal effect of expansive water stop.
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