PVB film

PVB Film is mainly made of PVB resin-Polyvinyl Butyral Resin,which obtainedby a condensa-tion reaction of polyvinyl alcohol with BTA in the presence of acid as catalyst. It has the proper-ties of non-conosive,high transparent,elasticity,insulation,water-and-oil resistance,anti-aging,large cohesion,Therefore,it is widely used in laminated sfety glass.

Songtian"s PVB Film branded as"jiesong"focuses on clear,super-tough polymer(plastic)sheet materials(called"interlayers")that can be sandwiched between glasses and formed into acom-posite by controlled processes combining heat and high pressure,The processing typically is done,in large autoclaves capable of making finished,laminated glass suitable for vchicles or buildings.

These interlayer materials are supplied in a variety of thickensses,and in color tint specialties where required,Glass laminators and window and door manufacturers use the interlayer"s from Songtian to complete the construction of glass meeting end-use requirements.

Properties
　　Safety
　　The glass which interlyered by PVB film can absorbs the energy impact and hence resists penetration.On the other way,if the glass impacted by outside forces,it shatters but never splinters for protecting objicts inside,minimizing the risk of injuries.

　　Sound Reduction
Noise gains easiest entry to homes and buildings through windows and doors.Glass interlyered by PVB film proves an excellent barrier to noise, ti ha better Sound Transmission Loss as compared to glass of similar thickness in the frequency of 125 Hz to 4000 Hx,Also it climinates the coincidence dip that is associated with the monolithic glass.

　　Solar Energy Control
While natural light is important for us too much sunlight can also mian too much heat gain inside the building .Laminated glass when used in combination with reflective glass,tinted glass or low e glass providws excellent reduction in the Solar Gains as well as reduction of sound transmission through the wingdow.

　　Uv Control
PVB film plays an imortant role to reduce the chemical reaction which caused by short-wavelength UV radiation. absorbing additives in PVB film can screeen out almost all these damaging rays.

　　Protection from weather and natural disasters
Ifthe glass interlyered by PVB film broken, it will remains in its frame, preventing interior damage while reducing flying glass protects people both indoors and outdoors,Therefore,areas which subjected to heavy winds and rain such as hurricanes or cyclones will reduce the risk of injuries,give people extra protection.

　　Durability
Glass interlyered by PVB film is durable, it maintains its color and its strength for a very long time.

　　Bulletproof
High intensity glass can be made by adding more PVB and glass of different thickness.