Rubber strip is the key to the sealing performance of doors and Windows, and is also one of the important indicators when purchasing products to look at the structure.
Today,let us know the sealing gasket, its function, and the purchase skills:
01 The position of door and window rubber strip
In more common cases, the rubber strip will appear in 4 to 5 positions of the door and window structure:
· There are two/three rubber strips at the position of door and window fans, and sealant on both sides of the glass;
· there are two/three rubber strips at the door and window fans, but the sides of the glass are replaced with rubber strips;
· Some door and window structures only have the middle rubber strip and interior side rubber strip, there is no rubber strip outside.
02 The role of the rubber strip
It is often said that the structural tightness of sliding door window products is far less than that of casement Windows, upper suspended Windows and other window types.
The reason is that the product structure of the casement window is sealed with rubber strips, and most of the "push and pull" doors and Windows products use a gap top seal (there are exceptions, such as lifting push and pull, translation and other products) :
The role of the sealing strip in the door and window is this: when the window is closed by the hardware, it provides a "sash" process to "pressure" the window frame. During the opening process, the rubber strip around the window sash and the frame is deformed because of the pressure, and the deformed rubber strip will tightly press the gap between the window sash and the window frame, so that the wind can not penetrate and the rain can not enter.
The rubber strip improves the tightness of doors and Windows, and also positively affects the play of heat insulation and sound insulation, mainly because it blocks the conduction of flowing air to temperature and sound.
03 The role of the middle rubber strip
From the outside position of the door and window structure, regardless of whether there is an external frame strip, it is not a complete (uninterrupted) seal because of the drainage hole. Therefore, this position has a sealing effect, but it is not large and does not play a main role (because drainage is necessary).
The appearance of the middle strip, by making a lap with the heat insulation strip raised (most commonly, also with aluminum), forms a new seal.
This seal divides the chamber between the box and the fan into an airtight chamber and a watertight chamber, so that the sealing structure of the doors and Windows is more complete and reasonable, and the sealing effect of the doors and Windows is of course better in theory.
04 When buying doors and Windows, how to check the rubber strip
How to select the ideal door and window product structure through the rubber strip?
1.The material of rubber strip.
Most businesses are using the popular ethylene propylene diene (EPDM) and thermoplastic composite strip (TPE), both of which are better materials and can play a long-term role. The PVC material has now been eliminated. Therefore, when choosing doors and Windows, we can also ask the merchant about the material of the rubber strip they choose.
2.The sealed channel quantity.
Under the same premise in other circumstances, the three sealing products with the middle strip are relatively better than the two sealing effects, we think that the high demand for doors and Windows in the home has a budget to choose three, and the general conventional family two can also be.
3.Check the contact area of the rubber strip.
That is, the contact area between the rubber strip and the frame fan when the door and window are locked. The larger the contact area of the rubber strip, the better the sealing effect.
4.Feel the squeeze.
Press the adhesive strip by hand, if you can feel the extrusion feeling caused by the deformation of the adhesive strip when you switch the sample window, it indicates that the sealing effect is good.
5. Understand the craft. The selection of rubber strips in specific parts of doors and Windows, such as the window frame, the corner position of the fan, the hinge position is the weak link connected to the rubber strip, if you encounter obstacles directly disconnect the rubber strip, it will affect the overall sealing of the door and window.
The best treatment method is to fix the truncated port with glue, the same size of the corner rubber strip, vulcanized integrated rubber strip, and hidden hinges to improve the overall sealing of doors and Windows.