Where to Check the Production Date of Automotive Glass?
1 Answers
Automotive glass production dates are typically marked in the lower right corner of the window or below the trademark. Numbers represent the year, while small dots indicate the quarter. Most automotive glass is made of soda-lime glass, with silicon dioxide content exceeding 70%, and the remainder composed of sodium oxide, calcium oxide, magnesium, etc., manufactured through the float process. The glass is then further processed into tempered glass (TSG) or laminated glass (LSG). Laminated glass refers to a transparent adhesive plastic film sandwiched between two or three layers of glass, combining the toughness of plastic with the hardness of glass to enhance the glass's resistance to breakage. Tempered glass is made by quenching ordinary glass to create internal stresses, thereby strengthening the glass. When impacted and broken, tempered glass shatters into small, blunt-edged fragments, reducing the risk of injury to occupants. Zoned tempered glass is a new variety of tempered glass that undergoes special treatment to maintain some clarity in the cracks when impacted, ensuring the driver's field of vision remains unaffected. Currently, most automotive windshields are made of laminated tempered glass or laminated zoned tempered glass, capable of withstanding strong impacts. Methods for repairing damaged automotive glass: Pour glass cleaner onto a towel and clean the area to be repaired; use a blade to remove fragments and apply resin repair fluid; use a syringe to extract air from the damaged area and press down to inject the repair fluid into the crack; apply the remaining repair fluid to the crack and wait patiently; use a blade to remove excess resin and then lightly sand with 1200-grit sandpaper.
