DESIGN OF IN-FEED MECHANISM AND THE SECOND UNWINDER FOR PLASTIC EXTRUSION-LAMINATION MACHINE

• Main Author: ANDREAS (NIM : 13106058); Pembimbing : Ir. Ignatius Pulung Nurprasetio, MSME; Eka Febrian Sut, DAVIN
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/15299
• Institution: Institut Teknologi Bandung

Extrusion-lamination machine is equipment that performs extrusion coating on various flexible materials using melted plastic as glue. With this machine, packaging <br /> <br /> <br /> materials may be made in the form of multiple layer sheets. The number of layers determines the quality of the packaging. Extrusion lamination machine consists of four <br /> <br /> <br /> parts, namely the unwinder, extruder, laminator, and rewinder. The design was performed by four students with the help of PT. Norita Flexindo, a packaging company that is interested to develop the extrusion-lamination machine. This final project main interest is the in-feed and the second unwinder. In-feed unit will pull the plastic sheet <br /> <br /> <br /> from the (first) unwinder, while the second unwinder will release the additional plastic sheet from its roll. <br /> <br /> <br /> The design criteria for the in-feed is as follows: may accommodate plastic sheet up to 1200 mm width, equipped with a press roll mechanism, use AC motor as the main <br /> <br /> <br /> drive, and the design may be easily modified to add the corona unit. Design criteria for the second unwinder are as follows: able to hold plastic roll with 500 mm in diameter <br /> <br /> <br /> and utilizes two 1.3 m wide air shafts. Based on the above criteria, a three dimensional model was constructed and analyzed. The analysis includes force calculation, powder <br /> <br /> <br /> brake selection, bearing selection and sizing, including life time calculation, AC motor selection, and transmission design. The analysis is also complemented with manufacturing process design. <br /> <br /> <br /> To summarize, in this final project, in-feed and the second unwinder design for plastic extrusion-lamination machine has been completed. In addition, the document includes the necessary engineering analysis and manufacturing process design. Therefore, if PT. Norita Flexindo plans to execute the production of the extrusionlamination machine, this final project will provide the required information.