What is the amount of plastic profiles
For the sliding window, the commonly used fan frame of the European profile, for example, the amount of lap by the window frame ribs, window groove groove and pulley size decision. Usually the ribs, the same size (also has a rib size larger than the groove size), 20 ~ 22mm. Fan groove size minus the pulley height, that is, fan and the next frame of the lap, pulley height is generally 12mm, The amount of lap is
8 ~ 10mm. Industry standard requirements between the frame fan lap uniform, then the fan and the box on the amount of overlap is 8 ~ 10mm.
The size of the sliding window lap affects the sealing of the window, safety, installation, daily use and so on. (12mm-8mm = 12mm), the gap between the fan and the ribs of the box (ie, the slide) is 12mm (20mm-8mm = 12mm). ), This gap for windows to install and pick up. When installing the window, the sash and bottom frame are only 4mm at the top of the ribs. Due to the size deviation of the window frame and sash, the straightness deviation of the window frame installation and the height change of the pulley used will change the actual overlap and installation gap of the frame fan. When the amount of overlap between the fan and the upper frame increases, the installation gap decreases, and the window fan is hard to be installed, and the frictional force of the window and the upper seal block increases, resulting in the opening of the sash; Sealing performance decreased, lap volume is too small, but also increase the risk of sliding window off.
Plastic window frame and sash with lap way to seal, fan and the box part of the overlap called the amount of overlap. The industry standard does not specify the amount of lap. For the flat window, lap is generally between 8 ~ 10mm. If the conditions permit, the amount of lap as much as possible to choose a larger, so that in the installation and use, even if the frame fan overlap position slightly dislocation, but also to ensure that the seal between the frame fan. Using different hardware, but also affect the amount of overlap factors. If the use of ordinary handle, frame fan lap can choose a larger, if the use of transmission handle, frame between the need for a certain gap between the installation of the drive, so the amount of lap would have to be smaller, otherwise, installed on the fan Of the transmission is easy to touch the window frame, affecting the sash switch. Therefore, even with the same profile, the lap should also be determined separately.
