Continuous noise when the window is raised to the top may be due to insufficient lubrication or malfunction of the lifting motor. Spraying liquid butter along the rubber seal can improve the situation, but it is recommended to have it checked and replaced at a professional facility. Additional information about automotive glass is as follows: 1. Tempered Glass: Automotive glass is manufactured by heating the glass to near its softening point in a furnace, then rapidly transferring it to fans with varying cooling intensities for uneven cooling. This process creates different stress levels between the main viewing area and the peripheral regions, producing zone-tempered glass. 2. Classification: Automotive glass is an essential component of vehicle body attachments, primarily serving a protective function. There are three main types: laminated glass, tempered glass, and zone-tempered glass, all of which can withstand significant impact forces. 3. Function: Most front windshields are made of laminated glass, which consists of three layers. The middle layer is highly resilient and adhesive, ensuring that the inner and outer layers remain bonded to it upon impact, reducing the risk of injury. Vehicles may use soundproof glass in the front, rear, or throughout the entire cabin. Soundproof glass is a product designed to block sound, typically featuring a double or multi-layer composite structure of laminated glass. The sound-damping adhesive (film) in the middle layer plays a crucial role in weakening and attenuating sound transmission.
