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Classification Of Doors And Windows Seals
Feb 21, 2018

Classification of doors and windows seals

At present, the sealing strip market mainly modified PVC, vulcanized EPDM (EPDM) and thermoplastic EPDM / PP tape.

1, modified PVC tape

The price is relatively low, due to different quality advantages and disadvantages, the price is generally 6000 yuan 15000 yuan / ton. Low-end products as a result of the use of waste, alternative plasticizers and high loading, so that poor flexibility of the strip, easy-to-hard, assassinated nose flavor, easy to migrate to frame yellow, short life. A small number of low-level price competition in the windows and doors are still in use. Medium and high-end PVC tape can reach the standard indicators, the service life is relatively long, at present there is a considerable selection of doors and windows in our city.

PVC products containing halogen, stabilizer containing heavy metals, it is not conducive to environmental protection, so the developed countries and domestic cities in Beijing and coastal areas have eliminated or restricted the use of PVC tape. At present, some enterprises in our city have started to upgrade the EPDM seal.

2, vulcanized EPDM rubber seal

In sealing elastic durability than PVC tape has greatly enhanced, but due to the need for microwave curing line stereotypes, processing energy consumption is high, usually more than 20 times the PVC processing, the product can not be reused, not environmentally friendly, not national advocacy product. In addition, the proportion of such products (1.4 and above) and PVC equivalent (lower proportion of vulcanized EPDM strip greater) out of the window and PVC strip almost the same, the use of relatively high cost, difficult to accept the doors and windows companies.

3, thermoplastic EPDM seal

The seal is a new material developed on the basis of the introduction of foreign technology and domestic independent research and development in recent years, mainly used in automobile door and window seal, in recent years began to be used for building door and window seal.