Birin, Al-sheebar L.  <br/><br/>
Development of electric densifier machine for waste plastic with temperature controller/ 
Al-sheebar L. Birin, Justin Rome R. De Jesus, Mon Jeru V. Lopez, Meynard L. Montano, and Earlwyn Joseph A. Palcis.-- 
 - Manila:  Technological University of the Philippines,  2025. 
 - xiii, 107pages:  29cm. 
<br/><br/> Bachelor's thesis<br/> 
<br/><br/>College Of Industrial Technology.--<br/> 
<br/><br/>Includes bibliographic references and index. 
<br/><br/> The increasing accumulation of plastic waste presents immense and critical environmental<br/>challenge worldwide. This study presents the design, development, testing, and evaluation<br/>of the electric densifier machine for waste plastic with temperature controller, aimed at<br/>improving plastic waste management through efficient volume reduction and recycling.<br/>The prototype features a stainless-steel chamber for storing of mixed shredded plastic and<br/>used oil, an AC motor-driven ribbon-type mixer, electric heating coil, and a temperature<br/>control panel for temperature accuracy. The machine processes plastic waste into forms<br/>suitable for molding into materials like pavers and tiles. Experimental testing was<br/>performed using Low-Density Polyethylene (LDPE), High-Density Polyethylene (HDPE),<br/>composite of styrofoam and LDPE, mixed with used cooking oil. Mixing was done in a 1:1<br/>ratio of oil to shredded plastic by weight. A specific mixture containing 25% styrofoam,<br/>25% LDPE, and 50% used oil was also tested. Results showed that at three (3) different<br/>temperatures, LDPE melted fastest, with an average melting time of approximately 2 hours,<br/>11 minutes, and 18 seconds. In contrast, HDPE required a longer average melting time of<br/>about 4 hours, 34 minutes, and 19 seconds. A Styrofoam-LDPE mixture was also tested,<br/>with an average melting time of 2 hours, 15 minutes, and 21 seconds. The prototype was<br/>evaluated by experts from various technical fields meeting criteria such as functionality,<br/>workability, durability, safety, aesthetics, and economy. It achieved a high overall<br/>performance, with a mean rating of 4.30, classified as 'very good' across all aspects. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Densification<br/>Electric densifier<br/>Sustainability
<br/><br/><label>LC Class. No.: </label>BTH TJ 145  / B57 2025