Method of making an infrared reflective glass sheet-II

摘要

This disclosure is directed to a method of making an infrared reflective glass sheet. The method has the following steps. The glass sheet formed of soda/lime silica glass is selected. The glass sheet is heated to a temperature in a range from 900 DEG to 1100 DEG F. If desired, the sheet glass selected may be selected at the time it is being manufactured in a glass manufacturing operation and it would have upon leaving a process such as a float process a temperature in a range of 900 DEG to 1100 DEG F. An organic/tin ion-containing, chlorine-free compound is applied to a surface of the glass sheet. Application of this compound forms a tin oxide seal coating having a columnar grain microstructure on the surface of the glass sheet. A coating of tin oxide is applied to the tin oxide seal coating. The coating of tin oxide is formed from the decomposition of butyltin trichloride. The columnar growth of the tin oxide seal coating is continued by a columnar growth in the tin oxide coating without any physical distinguishing microstructure characteristics between the tin oxide of each section of growth. The glass sheet is cooled to room temperature after application of the tin oxide seal coating and the tin oxide coating thereon.