Polyisobutylene Hot Melt Sealant
In the field of high-end building sealing, Polyisobutylene Hot Melt Sealant has become a core material in the manufacture of insulating glass due to its excellent vapor barrier properties. This sealant, based on polyisobutylene, is uniformly applied on the surface of aluminum spacer bars through a hot-melt extrusion process, forming a dense sealing layer that effectively prevents moisture infiltration, ensuring that the dew point of the insulating glass remains below -40°C and meeting the stringent thermal insulation requirements of building energy-saving standards. As the skeleton of insulating glass, the aluminum spacer bars, filled with desiccant inside, work in conjunction with the polyisobutylene sealant to create a dual moisture-proof system. The two-component insulated glass polysulfide sealant serves as the second sealing line, forming a highly elastic sealing structure between the aluminum spacer bars and the glass substrate through precise mixing of the base and curing age…
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