1.
Sealing strip material selection

The window sealing strip is dustproof, waterproof, soundproof and sealed. The poor quality of the broken aluminum strip has a pungent taste, and the strip is rolled, which will shorten the time and directly fail to achieve the sealing effect.

Therefore, the quality of the sealing strip can directly affect the sealing effect and service life of the broken aluminum window.

Below we mainly analyze the material of the sealing strip:

01
Modified PVC strip
The price is relatively low, the quality is different, and the price is generally between 6,000 yuan and 15,000 yuan / ton.


Due to the use of waste materials, substitute plasticizers and high filling amount, the low-end products are so poor in elasticity, easy to be hard, have a scent of nose, easy to migrate, make the frame yellow, and have a short service life. A small number of door and window companies that are competing in low-level prices are still using them.

Because PVC products contain halogens and stabilizers contain heavy metals, they are not conducive to environmental protection. Therefore, foreign developed countries and domestic Beijing and coastal cities have eliminated or restricted the use of PVC strips.

2
2. Vulcanized EPDM rubber seal
In terms of sealing elasticity and durability, it is much stronger than PVC strip. However, due to the need for microwave curing line shaping, the processing energy is high, usually more than 20 times that of PVC processing. The product can not be reused, not environmentally friendly, not nationally advocated. The product.

3
3. Thermoplastic elastomer TPE sealing strip
TPE elastomer sealing strip is a new material developed on the basis of foreign imported technology and domestic independent research and development in recent years. It is mainly used for automobile door and window sealing strips. It has been used in building door and window sealing strips in recent years. Its outstanding advantages are:


1 The service life is equivalent to the vulcanized EPDM rubber seal.

2 processing energy consumption is lower than vulcanized EPDM rubber strip

3 It does not contain heavy metals such as halogen and lead. It can be recycled after use and meets the requirements of green building materials.

1. Before installing the glass, carefully remove the debris in the slot, such as mortar, brick scraps, wooden blocks, etc. When the glass is placed, it should be carefully centered to ensure uniform gap on both sides, and fixed in time to prevent collision displacement and deviation. The center of the slot.


2, the rubber sealing strip can not be pulled too tightly, the length of the blanking is 2O-3Omm longer than the assembly length. It should be set in place during installation, the surface is straight, and it is in close contact with the glass and glass slot, so that the surrounding force of the glass is evenly distributed at the corner. The rubber strip should be cut off at a bevel and glued firmly at the break.


3. When sealing the glass with sealant, the glass should be squeezed with rubber strips or rubber blocks to leave a gap of glue injection. The depth of glue injection should be no less than 5mm. Before the glue is cured, the glass should be kept from vibration.


4. The installation position of the top is generally on the window (door) fan, around the frame fan or on the sealing bridge (wind block), and the seal between the frame and the fan is strengthened.


5. The top specification is an important factor affecting the sliding door and window and watertight performance. It is also an important factor affecting the door and window switching force. If the top size is too large or the vertical hair is too high, not only the assembly is difficult, but also the resistance of the door and window is increased, especially when opening. The initial resistance and the final seating resistance at the time of closure are greater.


6. The specification is too small, or the height of the vertical top is not enough, and it is easy to get out of the slot, so that the sealing performance of the door and window greatly reduces the picture of the workbench. The top is subject to silicidation. The quality of the top is smooth, and the bottom and vertical hair are smooth. No bending, no pitting on the bottom plate, in line with the 0.2mm rule.
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