Kedebang 0.3~0.6mm polyester film is a kind of macromolecular vapor barrier. Compared with PE film, polyester film is seldom used in design, so many construction units are relatively unfamiliar. In fact, Kedebang brand polyester film is a polymer vapor barrier that is worth popularizing. The material has three layers of structure: polyester/poly (ethylene terephthalate) ethylene /Polypropylene. The polyester film surface is silver aluminized, and the polypropylene surface is rough and white water repellent, suitable for gluing and bonding various board perhaps Insulation cotton And provide sufficient mechanical strength for moisture-proof surface.
Definition of vapor barrier: a structural layer that prevents indoor water vapor from penetrating into the insulation layer.
The metal roof is easy to produce condensate, which will damage the insulation layer of the roof, causing the insulation cotton to become moldy and wet, and the insulation effect is lost. The vapor barrier is used below the insulation layer to prevent the rising hot water vapor in the building from entering the insulation layer. The early insulation cotton tape aluminum foil veneer can maintain the effect of vapor insulation and moisture resistance Four to five years later, the kraft paper will begin to rot because of the moisture on the side of the kraft paper. At the same time, the moisture will spread on the aluminum foil surface. From the indoor view of the roof, you can see the mildew spots one by one. Therefore, aluminum foil is a short-term low-cost vapor barrier film, which has been replaced by polymer vapor barrier film.
Nantong Kangda Composite Material Co., Ltd. (Jiangsu Kedebao Building Energy Saving Technology Co., Ltd pin Sale. Because the climate conditions in different project areas are different, some products will be designed with different materials, and Party A's cost accounting will also be taken into account, so our company has gradually improved its own production line So that customers can purchase all the film products of building envelope system in our company instead of looking around.
