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Design of Paper Foil and Laminating Machine as Lining Material for Paper Bags Wahyudi, Pongky Lubas; Cahyo, Yusuf Eko Nur; Budiyanto, Risandie Octafian; Wulandari, Anita
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 9 No. 1 (2025): June
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v9i1.26117

Abstract

In order to enhance the contribution of MSMEs as a key driver of Indonesia’s economic growth, the development of small- to medium-scale production machines is essential. This is particularly important as MSMEs face increasing competition and more complex customer demands. This study aims to design and develop a simple production machine using CAD software and Autodesk Inventor to improve productivity and quality in the paper bag manufacturing process. Currently, production is carried out manually, resulting in limited capacity and product quality. The machine being designed serves to perform the paper gluing and rolling processes with foil lamination. The design integrates the gluing and rolling mechanisms into a single unit equipped with an automatic rotating system. This setup significantly reduces production time, thereby increasing both capacity and quality compared to the manual process. Simulation analysis of force, stress, and safety factor was carried out assuming the frame receives a load of 120 N, based on conditions close to reality. The results show a maximum Von Mises stress of 97.91 MPa and a minimum of 0 MPa. The maximum displacement is 0.5844 mm, and the minimum is 0 mm. The safety factor at the top frame section is 2.55 ul. Meanwhile, for testing under a 12 kg load, the results show a maximum Von Mises stress of 108.8 MPa, a displacement of 0.6488 mm, and a safety factor of 2.3 ul.
The Use Of Tangram Media To Improve Mathematics Learning Outcomes In 1st Grade Elemtary School Students Wulandari, Anita
Social, Humanities, and Educational Studies (SHES): Conference Series Vol 5 (2022): Social, Humanities, and Educational Studies (SHEs): Conference Series (Special Issue 1
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/shes.v5i5.78024

Abstract

Learning media is something that is very necessary in every lesson. Learning media supports the achievement of the learning objectives themselves, especially the use of concrete media in class 1 students on geometry material. Mathematics learning geometry phase A class 1 found problems regarding the material for compiling (composing) and breaking down (decomposing) flat shapes, namely the lack of concrete media that supports learning geometry on this material so that students' understanding is still not optimal. Based on these problems, the researcher conducted research on the use of tangram media, with the aim of knowing the learning outcomes of students in composing (composing) and decomposing (decomposing) flat shapes. The method used in this research is descriptive qualitative method with data collection techniques namely observation and evaluation results of students. The learning outcomes data obtained by students is an average of 78.8 with the highest score of 100 and the lowest score of 40. Based on the results of these data it can be said that the ability of students in compiling (composing) and decomposing (decomposing) flat shapes is still very varied so that further use of tangram media is needed to further improve student learning outcomes.