Door and window sealing strips are divided into three categories: glass sealing strips (adhesive strips), door leaf and door cover sealing strips and wool strips. The sealing between the door panel and the door frame, the top is mainly used for the sealing between the frame and the fan. In the production and installation of plastic steel doors and windows, broken bridge aluminum doors and windows, and wooden doors, sealing strips are an indispensable accessory.

The sealing tape plays an important role in waterproofing, sealing, and energy saving in plastic steel doors and windows, broken bridge aluminum doors and windows, and wooden doors and windows. It is soundproof, dustproof, antifreeze, and warm. It must have strong tensile strength, good elasticity, and better temperature resistance and aging resistance. In order to ensure the fastening of the rubber strip and the profile, the cross-sectional structure size of the rubber strip must match the plastic steel door and window profile. Sealing strips are generally used for side-hung doors and windows, hanging windows, and folding doors and windows. The main functions are dust-proof, insect-proof, waterproof, sound-proof, sealing, etc.

The installation position of the top is generally on the sliding window (door) leaf, around the frame fan or on the sealing bridge (wind block) to enhance the sealing between the frame and the fan. The top specification is an important factor that affects the performance of sliding doors and windows and the watertightness, and it is also an important factor that affects the opening and closing force of doors and windows. Excessively large tops or high vertical hairs will not only make assembly difficult, but also increase the resistance of doors and windows, especially the initial resistance when opening and the final resistance when closing. If the specifications are too small, or the height of the vertical tops is not enough, it is easy to fall out of the groove, which greatly reduces the sealing performance of doors and windows.

There are two types of tops: siliconized and non-siliconized. The siliconized tops have better effect in use. The qualified tops have a straight surface, the bottom plate and the vertical hairs are smooth, no bends, and there are no pits on the bottom plate, conforming to 0.2mm. Regulation.