The book "Sheet Extrusion of Cellulose Acetate Butyrate" provides a comprehensive examination of the properties and optimization of extruded sheets made from cellulose acetate butyrate (CAB), a transparent plastic material with promising potential for various optical applications. The research focuses on the use of different amounts of plasticizers to enhance the quality of the extruded sheets. The effects of plasticizer proportions of 5%, 8%, 10%, and 12% were analyzed, with the 8% variant identified as particularly advantageous for optical applications. The results of this study are highly beneficial for manufacturers, process and research engineers, as well as professionals in the field of optical products. Additionally, the book offers a valuable foundation for manufacturers and students looking to expand their research on CAB with further additives such as dyes, UV absorbers, and antioxidants.