Exterior Door Weather Stripping Door
At present, the sealing strip market mainly consists of modified PVC, EPDM and EPDM/PP. 1. Modified PVC tape. The price is relatively low, because the quality is different, the price is generally between 6000 yuan and 15000 yuan/ton. Low-end products, due to the use of waste, substitute...
At present, the sealing strip market mainly consists of modified PVC, EPDM and EPDM/PP.
1. Modified PVC tape.
The price is relatively low, because the quality is different, the price is generally between 6000 yuan and 15000 yuan/ton. Low-end products, due to the use of waste, substitute plasticizer and high fill volume, to make the rubber strip elastic, easy to be hard, and have the smell of the nose, easy to migrate to make the frame material yellow, short service life. The few doors and Windows that are at low price competition are still in use. Medium and high-end PVC tape can reach the standard index, the service life is also relatively long, at present our city has quite the door window enterprise chooses.
Because of the halogen in PVC products and 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. At present, some enterprises in our city have started to upgrade the use of epdm seals.
2. Epdm rubber seal strip.
In a sealed elastic persistence than PVC strip has a lot to strengthen, but due to the need microwave vulcanization line shape, high energy consumption of the processing, is often more than 20 times of PVC processing, the product can't recycle, not environmental protection, is not a product of the national advocacy. In addition, this kind of product material proportion (1.4 or above) and PVC fairly (low proportion of vulcanized epdm gaskets bigger) out of the window rate and PVC glue, use cost is relatively high, doors and Windows enterprise is difficult to accept.
3. Thermoplastic epdm rubber seal strip.
The sealing strip is imported technology from abroad and domestic in recent years, developed on the basis of independent research and development of a new material, mainly used for car doors and Windows sealing strip, started in recent years used for building doors and Windows sealing strip.
The function of door and window seal strip.
The door and window seal strip can be divided into three main categories: glass seal, door handle seal and sliver. Glass sealing strip is used for sealing the gaps between the glass door and frame doors seals are used to seal the gaps between the door and door frame, galley is mainly used for sealing box and the gaps between the door. In the process of installation of various doors and Windows, the sealing strip is indispensable.
The seal is sealed and waterproof in the doors and Windows of plastic steel, aluminum alloy doors and Windows and wooden doors and Windows. The sealing strip has a high requirement for material. First, it must have strong tensile strength and elasticity, as well as good temperature resistance and aging resistance. In order to ensure the tight contact between the sealing strip and the profile, the section structure of the sealing strip must be matched with the window section, which is generally suitable for hanging Windows and folding doors and Windows.
The sliver is generally used to install on the fan of the push-position door and window to seal the gap between the frame and the fan. The specification of wool bar can affect the watertight performance of door window to a large extent, also can affect the switch of door window. If the specifications are too large or too high, it will be very difficult to assemble, and the resistance will be greater when the doors and Windows are moving. And if the fire specification is too small, or the vertical hair is too low, the door window is easy to take the slot phenomenon, reduce the sealing property of the door window. Generally, there are two types of wool, which are processed by silicification and not processed by silicification. Generally, the treatment effect is better. Quality qualification of wool top has the following characteristics: appearance has no obvious defects, surface flat, bottom and vertical hair is smooth, no bending, and no pitting on the floor and other problems, comply with the provisions of the size.
The main function of doors and Windows is to seal, how to strengthen the sealing, so the sealing strip has played a very crucial role. Common seals are generally on the market of PVC material, its quality is mainly see which join plasticizer, with the rise in the price of all kinds of chemical field, the price of the sealing strip is also rising. Some irresponsible manufacturers in order to immediate interests, to cut corners during production, largely influence the quality of the products, at the same time also gave consumers a great consumer concerns. In the process of making a door or window, the sealing strip is only a small part, but it can play an important role.