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PENERAPAN METODE KANSEI ENGINEERING DAN QUALITY FUNCTION DEPLOYMENT (QFD) DALAM PENGEMBANGAN KUALITAS PRODUK PIAMA Wirahata, Christie; Kosasih, Wilson; Salomon, Lithrone Laricha
Jurnal Ilmiah Teknik Industri Vol. 11 No. 3 (2023): Jurnal Ilmiah Teknik Industri : Jurnal Keilmuan Teknik dan Manajemen Industri
Publisher : Program Studi Teknik Industri, Fakultas Teknik Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jitiuntar.v11i3.21191

This research was conducted in a micro, small and medium enterprise (MSME) which produces apparel with its own brand. Even though they have been producing clothes since October 2020, sales have not met the target so the owner decided to temporarily stop the business with plans to continue after having sufficient capital. This study aims to determine consumer expectations for pajama products, measure the gap between expectations and products, and provide a design for the development of product quality using the Kansei Engineering and Quality Function Deployment (QFD). By processing the results of the first questionnaire and grouping the attributes into the eight dimensions of product quality, the eight most important attributes were comfort, pockets on shirt, safe, durable, smooth, easy to buy, affordable, and minimalist. The second questionnaire asked respondents to express their level of expectations and perceptions of the main product, competitor 1 and 2, which were then used to conduct a gap analysis. The gap value showed that consumer satisfaction with the main pajama product is lower than competitor 1, but higher than competitor 2, where the main product has an advantage in the 'affordable price' attribute. Furthermore, the three phases of the House of Quality (HOQ) provided manufacturing planning results in the form of using materials without defects, cotton and cotton t-shirt materials, plain or minimalist motifs, short sleeve and short pants model, variations in sizes M, L, and XL for all models, and the provision of pockets in shirts and pajama pants.

PELATIHAN PEMBUATAN PRODUK MINUMAN PROBIOTIK KOMBUCHA DAN SPA KOMBUCHA RUMAHAN Salomon, Lithrone Laricha; Helena Juliana Kristina; Natasia Aurelia; Rina Sugianto Gunawan
Jurnal Bakti Masyarakat Indonesia Vol. 7 No. 1 (2024): Jurnal Bakti Masyarakat Indonesia
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jbmi.v7i1.27351

Environmental awareness is something that really needs to be introduced in various circles. This also needs to be instilled in the church through movements in each environment. The PKM team partners with one of the neighborhoods in this church, namely the St. Yulius neighborhood with around 60 heads of families. The St Yulius environmental sector feels it is necessary to develop educational activities and real practices, so that people become more aware of the problem of global warming. Currently, Yulius's environment has sorted its waste, made eco enzymes, and planted and cared for trees. Seeing the existing behavior, the PKM team proposed a training that could increase people's knowledge and real practice through making kombucha. In this PKM, participants are taught how to make kombucha tea and kombucha coffee as probiotic drinks, namely drinks that contain good microorganisms to maintain a healthy digestive tract. Apart from that, participants also learned about advanced processing of kombucha for home SPA products such as skin cream, skin toner and hair tonic. Based on the questionnaire distributed, all participants who took part in this activity said this activity was very useful and increased their insight. Through this training, it is also hoped that awareness will grow among participants regarding the problem of global warming which has a negative impact on colonies of microorganisms that are invisible to the eye. In fact, humans really need the presence of colonies of microorganisms that are good for the health of the human body ABSTRAK Kepedulian lingkungan hidup adalah hal yang sangat perlu dikenalkan di berbagai kalangan. Hal ini juga perlu ditanamkan di gereja melalui gerakkan di masing-masing lingkungan. Tim PKM bermitra dengan salah satu lingkungan yang ada di Gereja ini, yaitu lingkungan st Yulius dengan jumlah kepala keluarga sekitar 60 kepala. Sie lingkungan hidup St Yulius merasa perlu mengembangkan kegiatan edukasi dan praktik nyata, agar umat semakin peduli terhadap masalah pemanasan global. Saat ini lingkungan Yulius sudah memilah sampahnya, membuat eco enzim, serta menanam dan merawat pohon. Melihat perilaku yang ada maka, tim PKM mengusulkan suatu pelatihan yang dapat menambah pengetahuan dan praktik nyata umat melalui pembuatan kombucha. Dalam PKM ini, peserta diajarkan cara pembuatan teh kombucha dan kopi kombucha sebagai minuman probiotik, yaitu minuman yang mengandung mikroorganisme baik untuk menjaga kesehatan saluran pencernaan. Selain itu, peserta juga mempelajari pengolahan lanjutan kombucha untuk produk SPA rumahan seperti krem kulit, toner kulit dan tonik rambut. Seluruh peserta yang mengikuti kegiatan ini berdasarkan kuesioner yang disebarkan mengatakan kegiatan ini sangat bermanfaat dan menambah wawasan mereka. Melalui pelatihan ini juga diharapkan semakin tumbuh kesadaran di kalangan peserta akan masalah pemanasan global yang berdampak buruk bagi koloni mikroorganisme yang tak tampak oleh mata. Sementara disisi lain manusia juga sangat membutuhkan kehadiran koloni mikroorganisme yang baik untuk kesehatan tubuh manusia.

STRATEGI PENURUNAN DOWNTIME DAN SETUP TIME PADA MESIN HEAT SEAL MENGGUNAKAN PENDEKATAN LEAN MAINTENANCE Ong, Michelle Roselyn; Salomon, Lithrone Laricha; Kosasih, Wilson
Jurnal Mitra Teknik Industri Vol. 4 No. 3 (2025): Jurnal Mitra Teknik Industri
Publisher : Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/8wtj9758

The automotive battery manufacturing industry faces challenges in the effectiveness of its machine maintenance systems, particularly in the heat seal machine, which recorded the highest downtime with a total of 12,722 minutes and 434 occurrences from April 2024 to March 2025. This study aims to identify waste in breakdown maintenance activites, analyze the root causes, and provide improvement recommendations based on lean maintenance, The method used is Maintenance Value Stream Mapping (MVSM) to identify value-added (VA) and non-value-added (NVA) activities, and to calculate maintenance efficiency using indicators such as MTTO, MTTR, MTTY, and MMLT. In addition, root cause analysis is conducted using the five whys method and data collection through observation, interviews, and focus group discussion (FGD). The results show that maintenance efficiency is only 32.97% with NVA activities dominating at 67.03%. The identified types of waste include waiting, motion, process, and defects. The proposed improvements include the implementation of floation technicians, addition of trolleys, digitalization of the maintenance system using a Computerized Maintenance Management System (CMMS), and placement of toolboxes and equipment trolleys on the production floor. The implementation of the future state map shows an increase in efficiency to 38.22% and a reduction of NVA activities to 61.78%. These results indicate that the lean maintenance approach through systems.

QUALITY IMPROVEMENT ANALYSIS USING THE SEVEN NEW QUALITY TOOLS AND POKA YOKE IN A SAFETY SHOES MANUFACTURING COMPANY Nathaniel; Kosasih, Wilson; Salomon, Lithrone Laricha
Jurnal Mitra Teknik Industri Vol. 4 No. 3 (2025): Jurnal Mitra Teknik Industri
Publisher : Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/mv4y6h87

This safety shoe company is a manufacturing company that faces various quality issues, such as defects in stitching, leather, mismatched shoe pairs, and incomplete components. Based on production data from March 2024 to February 2025, the most dominant defects were “Mismatched Pairs” and “Incomplete Components,” with a total of 3,694 defective pairs out of 120,000 produced, resulting in a DPMO value of 7,695.83. This study aims to identify the root causes of these defects and design quality improvement solutions using the New Seven Quality Tools and PokaYoke methods. Data were collected through field observations and literature reviews, then analyzed using tools such as the Pareto Diagram, Affinity Diagram, Interrelationship Diagram, Tree Diagram, and Matrix Analysis. The results show that immediate corrective actions include the development of standard operating procedures (SOPs), routine socialization, daily briefings, improved lighting, and component replacement. Long- term solutions, such as adding conveyor belts and implementing preventive maintenance, could not yet be executed due to time and cost constraints. Implementation efforts focused on developing a Poka Yoke-based SOP at the packing station as a concrete step toward improving product quality.

ANALISIS EFEKTIVITAS SISTEM MAINTENANCE SEBAGAI UPAYA PENINGKATAN KINERJA OPERASIONAL MELALUI MAINTENANCE 4.0 Tashadda Qanitan; Mohammad Agung Saryatmo; Lithrone Laricha Salomon
Jurnal Ilmiah Teknik Industri Vol. 13 No. 3 (2025): Jurnal Ilmiah Teknik Industri : Jurnal Keilmuan Teknik dan Manajemen Industri
Publisher : Program Studi Teknik Industri, Fakultas Teknik Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jitiuntar.v13i3.37453

The Industry 4.0 era demands a transformation of machine maintenance systems from reactive to predictive to maintain production efficiency. This research focuses on Flexographic Printing machines in the packaging industry, which are experiencing low performance with an average Overall Equipment Effectiveness (OEE) value of only 49.78%, far below global standards. The objective of this research is to enhance maintenance effectiveness through the development of a Smart Maintenance framework named "FlexoTwin". The research methodology integrates quality diagnostic approaches (Fishbone Diagram & FMEA) with Digital Twin technology. The initial diagnostic stage focused on comprehensive risk mitigation, not only based on the highest Risk Priority Number (RPN) in the Feeder unit (336) but also prioritizing the handling of failure modes with critical Severity levels across all machine components. These findings served as the basis for developing a Machine Learning (Random Forest) model integrated into a web-based dashboard. Test results show that the model is capable of predicting maintenance duration with high accuracy ( =0.83). Furthermore, optimization simulations established a machine health threshold at the 40% level as the trigger point for automatic warnings (Auto-Prediction Trigger). The implementation of "FlexoTwin" has proven capable of providing real-time condition visualization and data-driven recommendations, enabling a transition to a more precise and efficient maintenance strategy compared to manual methods.

PENGENDALIAN KUALITAS PADA KOMPONEN BARREL PENA E7 DENGAN METODE SIX SIGMA DI PT. X Moses Xanthus; Marcellinus Irvan P; Angelina Laurentcia; Vanessa Stefani; Lithrone Laricha Salomon
Jurnal Mitra Teknik Industri Vol. 5 No. 1 (2026): Jurnal Mitra Teknik Industri
Publisher : Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jmti.v5i1.38038

This study analyzes quality control in the production of E7 pen barrel components in the injection department of PT. X, where the Defect rate consistently exceeded 5% from January to September 2025, peaking at 12.30% in July. The Six sigma method was applied through a Project Charter, Fishbone Diagram, FMEA (with the highest RPN values for material drying at 105 and flashing at 96), as well as data analyses such as Pareto charts to identify dominant Defects arising from unstable mold temperature, low injection pressure, and non-uniform cooling. This descriptive quantitative research uses primary data (observations of temperature, pressure, and Defects) and secondary data from company reports, collected through observation, interviews, and analytical tools such as Minitab and Excel for DPMO calculation and reliability validation. The results indicate potential improvements in the efficiency of the main production process (70% of pen output) through the stabilization of machine parameters and the process DPMO value was reported at 310,416 with a sigma level of 1.995, indicating that the process quality remains low. The main improvement solution involves the application of a Cooling conformal channel to the injection mold, which includes the design of a water-cooling system aimed at distributing heat uniformly and reducing sink marks and flash on the thin walls of the barrel.

The Effect of Lean Management on Innovation Performance: How Absorptive Capacity Affects Food Manufacturing Industry? Lithrone Laricha Salomon; Agustinus Purna Irawan; Eko Suhartanto
Advance Sustainable Science Engineering and Technology Vol. 8 No. 1 (2026): November - January
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v8i1.2820

This study analyzes the effect of Lean Management Practices (LMP) on Innovation Performance (IP) through the mediating role of Absorptive Capacity (AC) in Indonesia’s food and beverage industry. A structured questionnaire adapted from validated instruments (Gaspersz, 2007; Cohen & Levinthal, 1990; Damanpour, 1991) was distributed to 200 managers and supervisors from food manufacturing firms listed in the Indonesian Ministry of Industry registry, yielding 180 valid responses (90% response rate). Data were analyzed using Partial Least Squares Structural Equation Modeling (PLS-SEM) with SmartPLS 4.0, assessing reliability, convergent, and discriminant validity (HTMT ≤ 0.90). The results indicate that Lean Management strongly influences Absorptive Capacity (β = 0.919, p < 0.001) and both directly and indirectly enhances Innovation Performance (β = 0.690 and 0.725, respectively). Effect sizes (f² = 0.482 – 5.431) and R² > 0.83 confirm the model’s high explanatory power, while confidence intervals (95%) validate the path significance. These findings demonstrate that lean implementation enhances innovation effectiveness primarily through knowledge assimilation and transformation. The study’s main limitation is its single-sector, self-reported cross-sectional design, which may introduce common-method bias. Future research should apply multi-method or longitudinal approaches to increase generalizability.

QUALITY IMPROVEMENT ANALYSIS USING THE SEVEN NEW QUALITY TOOLS AND POKA YOKE IN A SAFETY SHOES MANUFACTURING COMPANY Nathaniel; Wilson Kosasih; Lithrone Laricha Salomon
Jurnal Mitra Teknik Industri Vol. 4 No. 3 (2025): Jurnal Mitra Teknik Industri
Publisher : Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/mv4y6h87

This safety shoe company is a manufacturing company that faces various quality issues, such as defects in stitching, leather, mismatched shoe pairs, and incomplete components. Based on production data from March 2024 to February 2025, the most dominant defects were “Mismatched Pairs” and “Incomplete Components,” with a total of 3,694 defective pairs out of 120,000 produced, resulting in a DPMO value of 7,695.83. This study aims to identify the root causes of these defects and design quality improvement solutions using the New Seven Quality Tools and PokaYoke methods. Data were collected through field observations and literature reviews, then analyzed using tools such as the Pareto Diagram, Affinity Diagram, Interrelationship Diagram, Tree Diagram, and Matrix Analysis. The results show that immediate corrective actions include the development of standard operating procedures (SOPs), routine socialization, daily briefings, improved lighting, and component replacement. Long- term solutions, such as adding conveyor belts and implementing preventive maintenance, could not yet be executed due to time and cost constraints. Implementation efforts focused on developing a Poka Yoke-based SOP at the packing station as a concrete step toward improving product quality.

STRATEGI PENURUNAN DOWNTIME DAN SETUP TIME PADA MESIN HEAT SEAL MENGGUNAKAN PENDEKATAN LEAN MAINTENANCE Michelle Roselyn Ong; Lithrone Laricha Salomon; Wilson Kosasih
Jurnal Mitra Teknik Industri Vol. 4 No. 3 (2025): Jurnal Mitra Teknik Industri
Publisher : Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/8wtj9758

The automotive battery manufacturing industry faces challenges in the effectiveness of its machine maintenance systems, particularly in the heat seal machine, which recorded the highest downtime with a total of 12,722 minutes and 434 occurrences from April 2024 to March 2025. This study aims to identify waste in breakdown maintenance activites, analyze the root causes, and provide improvement recommendations based on lean maintenance, The method used is Maintenance Value Stream Mapping (MVSM) to identify value-added (VA) and non-value-added (NVA) activities, and to calculate maintenance efficiency using indicators such as MTTO, MTTR, MTTY, and MMLT. In addition, root cause analysis is conducted using the five whys method and data collection through observation, interviews, and focus group discussion (FGD). The results show that maintenance efficiency is only 32.97% with NVA activities dominating at 67.03%. The identified types of waste include waiting, motion, process, and defects. The proposed improvements include the implementation of floation technicians, addition of trolleys, digitalization of the maintenance system using a Computerized Maintenance Management System (CMMS), and placement of toolboxes and equipment trolleys on the production floor. The implementation of the future state map shows an increase in efficiency to 38.22% and a reduction of NVA activities to 61.78%. These results indicate that the lean maintenance approach through systems.

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