Plastic seal is steel, aluminum, plastic doors and windows generally used to install the seal between the glass and the door frame seal fan

Plastic seal is steel, aluminum, plastic doors and windows generally used to install the seal between the glass and the door frames fan sealing material. Rubber seals are usually made of modified PVC material strip. 

Seal performance will largely affect the firm level doors and windows airtight, watertight, heat loss and other key performance indicators, and the doors and windows doors and windows. Therefore, the state has long established GB12002-89 national standard "plastic doors and windows with seals." To regulate the production and inspection seal. 

However, the doors and windows on the building materials market, with rubber seal of quality and the price is very confusing. Expensive fifteen thousand, six thousand dollars a ton, cheap only six thousand dollars a ton. Nearly million price difference, quality vary widely, as people know what to do. Many manufacturers are called seal products are executed GB12002-89 national standards and testing authority can issue a qualified test report. According to our testing, Ltd. Xingtai CITIC seal of well-known manufacturers in the industry is currently using the rubber seal, and seal the samples were sent to the manufacturers, the hot air aging properties of the project results were heated weightlessness indicators surprise: more than 10 samples, no one is qualified. 

According to GB12002-89 standards, seal hot air heat aging performance of the project in weightlessness indicators should ≤3%. The heating of the actual test results of the weight loss: 7.17% - 22.54%. Far beyond the scope of national standards. 

Such a seal, in the formula by adding a large number of low-boiling plasticizer or plasticizer substitutes. Such a seal in the new time, flexibility, softness are still good. However, over time, when more volatile plasticizers, sealing strips flexibility, softness variation, ranging from the impact sealing doors and windows, while also affect the degree of solid doors and assembled. 

Further, the plasticizer content is too high sealing strip, during use, but also to contact with PVC profiles plasticizer migration phenomenon. Resulting in partial coloring box fan profiles and swelling. Namely: the profile sealing surface in contact with the seal, appears a different width, do not rub, wash off the dark spots, and white in stark contrast to the profile body, extremely aesthetic impact. In the color of the track due to the immigration of the plasticizer, and local projections. (Sliding doors and windows and seal profiles due to the contact portion is not exposed, profiles of local coloring and swelling phenomenon not observed under normal circumstances. The door windows in the open state, seal profiles corresponding to the disengagement, profiles of local coloring and swelling phenomenon exposed.) Although, profiles of local coloring and swelling phenomenon, yet does not cause serious consequences frame profiles and fan failure, but it has seriously affected the plastic doors and windows look beautiful. After all, this is a defect, after causing extreme bad impact on the image of plastic doors and windows. 

Plastic doors and windows in order to maintain the image of health care in this emerging industry thrive, seal manufacturers should produce in fact truly qualified seal, plastic doors and windows assembly plant should be chosen truly qualified, high-quality seal. Ensure the quality of plastic doors and windows.