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Note On The Selection Of PVB Film For Glass

    The PVB film is suitable for conventional ordinary laminated glass, flat tempered and heat-enhanced laminated glass, curved tempered or curved heat-enhanced laminated glass, and heat-bent laminated glass.

    For flat tempered and heat-enhanced laminated glass, pay attention to these things when choosing PVB film.

    For tempered or heat-enhanced sandwich products, due to the inevitable glass wave and bow deformation during the tempering process, the gap between the glasses caused by this deformation will be filled by PVB film.

     In order to ensure that the glass does not have edge degumming and bubbles during the warranty period, and to ensure the safety performance of the glass, to avoid potential safety hazards and future losses, the selection of PVB film should be strict.

    For flat tempered and heat-enhanced laminated glass, when the thickness difference between the two pieces of glass is more than 3mm, this structure is not recommended due to the unreasonable force structure. If you insist on using it, the thickness of PVB must be increased by 0.38mm on the basis of the corresponding regulations.

    For single-piece tempered or heat-enhanced laminated glass, it is not recommended to use this kind of structure due to unstable factors of thermal explosion and unreasonable stress structure. If you insist on using it, the thickness of PVB must be increased by 0.38mm on the basis of the corresponding regulations, and it will not be responsible for the rupture of non-tempered or heat-strengthened glass.

    For special-shaped tempered and heat-enhanced laminated glass, the thickness of PVB must be increased by 0.38mm on the basis of the corresponding regulations because of the large deformation caused by the edge of the special-shaped glass.

    For flat tempered and heat-enhanced laminated glass, when the high side and wide side of the glass are larger than 800mm, and the ratio is close to 1, it is difficult to control the glass waveform when tempering or heat-enhancing glass of this size, and there will be large deformation, PVB The thickness must be increased by 0.38mm on the basis of the corresponding regulations.

    The thickness of the substrate glass is selected based on the thickness of the thicker sheet in the laminated glass substrate.

 

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