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Sainteks: Jurnal Sain dan Teknik
Published by Universitas Insan Cendekia Mandiri
ISSN : -     EISSN : 26858304     DOI : https://doi.org/10.37577/sainteks.v5i2
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering
Sainteks is a scientific journal that publishes research papers encompassing all aspects of natural sciences, technology and engineering. This journal is published 2 (two) times a year (March and September) by the Faculty of Engineering UICM d/h UNBAR. The fields covered by the Sainteks Journal include: - Chemical Engineering - Textile Chemical Technology - Industrial Engineering - Science - Textile Industry Technology - Environment
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 16 Documents
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Search results for , issue "Vol 7 No 02 (2025): September" : 16 Documents clear
Process Analysis of Producing Single Mesh Warp Knit Fabric Using a Double Needle Raschel Warp Knitting Machine Permana, Muhammad Indra; Hanif, Ilham Atsir; Hernawati, Resty Mayseptheny
Sainteks: Jurnal Sain dan Teknik Vol 7 No 02 (2025): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i02.875

Abstract

This study was conducted to evaluate the flexibility of the double needle bar Raschel machine in producing a mesh fabric design that is conventionally manufactured using a single needle bar Tricot machine. The research involved adjusting several parameters on the Raschel machine, including the number of needle bar positions, guide bar spacing, gudie bar shogging, and run-in values, in order to produce mesh fabric comparable to that produced by the Tricot machine. Subsequently, the physical properties of the resulting fabric were evaluated and compared to those of mesh fabric produced by the single needle bar Tricot machine, using ASTM standards. The test results indicate that the mesh fabric prduced using the double needle bar Raschel machine exhibit similar physical properties—including fabric weight (GSM), course per inch (CPI), wale per inch (WPI), thickness, tensile strength, tear strength, abrasion resistance, and bursting strength—to those of the fabric produced by the Tricot machine. These findings were supported by T-test results, which showed no statistically significant differences (p < 0.05) across all measured properties. The findings indicate that modern double-needle Raschel machines are capable of adapting to replicate the output of older single-needle Tricot maschines, offering a viable solution for production continuity when legacy equipment is no longer operational.
Optimization of Inventory Processes in University Laboratories Using Business Process Reengineering Method Alam, Muhammad Bagus Nurul; Tirta, Jantera Sekar; Jamaludin, Fauzi
Sainteks: Jurnal Sain dan Teknik Vol 7 No 02 (2025): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i02.891

Abstract

This study aims to optimize inventory management in university laboratories by redesigning the business process. The redesign is conducted using the Business Process Reengineering (BPR) approach. A lean-based analysis is applied to evaluate each inventory process by classifying them into value-adding, non-value-adding, or necessary but non-value-adding activities. The mapping of the initial inventory process and the development of improvement scenarios are carried out using Unified Modeling Language (UML). The redesigned inventory process is tested through simulation using iGrafx. Based on the simulation results, there is an improvement of 53% in the average processing time and 86% in the average waiting time. These improvements are achieved by merging compatible processes and implementing centralized storage.
Minimizing the Shipping Costs for Soes Cakes by Sari Asih SME Using the Transportation Method Aprilia, Hafiza; Dewi, Sarastya; Hamidah, Siti Nur
Sainteks: Jurnal Sain dan Teknik Vol 7 No 02 (2025): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i02.896

Abstract

The increasing demand for jobs in Indonesia, coupled with limited employment opportunities, has encouraged many to establish Small and Medium Enterprises (SMEs). Effective management is vital, especially for businesses with multiple branches, to ensure efficient product distribution and cost minimization. This study focuses on Sari Asih SME, a soes cake producer with several production facilities that supply various marketing locations. Using the Transportation Method from operational research, the study found that the optimal shipping cost is IDR 48,750, demonstrating a feasible and efficient solution.
Development of Biodegradable Nonwoven Mulch Mats from Ijuk Fiber for Sustainable Agriculture Anggunsuri, Dwi Reisalinda; Titinur, Maydha Tresnaning; Totong, Totong
Sainteks: Jurnal Sain dan Teknik Vol 7 No 02 (2025): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i02.902

Abstract

Abstract: Nonwoven agrotextile made from ijuk fiber (Arenga pinnata Merr.) was developed as a biodegradable mulch alternative for sustainable tropical agriculture. This study produced mulch mats using a combination of needle punching and thermal bonding at bonding pressures of 25, 50, and 75 bar. Physical and mechanical properties were evaluated in terms of tensile strength, elongation, basis weight, thickness, water absorption, and air and water permeability. The results showed that 75 bar yielded the highest tensile strength (0.19 kN), optimal elongation (15.92 %), and superior water–air permeability, whereas 25 bar excelled in basis weight (46.07 g/m²), thickness (2.55 mm), and water absorption (334.10 %). Pressure variation significantly (p < 0.05) influenced all parameters, indicating that bonding pressure is a key variable for balancing mechanical strength with agronomic functions—drainage, aeration, and moisture retention. With tunable structural and functional performance, ijuk fiber mulch mats offer an eco‑friendly solution capable of replacing single‑use plastic mulches. Scaling up this product could support sustainable agricultural practices and reduce plastic waste in peatland areas. Keywords: agrotextile, mulch mat, ijuk fiber, nonwoven, sustainable
Effect of Time and Storage Conditions on the Stability of Citronellal Lotion Puspita, Fitria; Roziafanto, Ahmad Nandang; Saragih, Libora
Sainteks: Jurnal Sain dan Teknik Vol 7 No 02 (2025): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i02.910

Abstract

Commercial mosquito repellent lotion containing citronellal was tested for its stability to evaluate changes in the physical and chemical properties of the lotion at various times and storage condistions. This study used three variations of storage conditions; at 25°C, 30°C, 50°C, and sun exposured condition. Storage was carried out for 3 months and testing was carried out once a month for each storage condition. The lotion stability parameters tested included pH, viscosity, and citronellal content. Acidity measurement was carried out using a pH meter. Viscosity measurement was carried out using a Brookfield spindle helipath 96 viscometer at a speed of 12 rpm, while citronellal content measurement was carried out using gas chromatography. The results showed that storage time and temperature had a significant effect on the stability of citronellal lotion. The longer the lotion was stored, the viscosity and citronellal content decreased. In addition, higher storage temperatures also accelerated the decline in lotion stability, showed by significant changes in viscosity and citronellal content. Meanwhile, the pH of the lotion did not change significantly at each variation of storage time and conditions. Keywords: mosquito, repellant, citronellal, stability.
Optimizing Sustainable Supply Chains in Apparel Production through System Dynamics Modeling using Vensim Tomi, Tomi
Sainteks: Jurnal Sain dan Teknik Vol 7 No 02 (2025): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i02.913

Abstract

Supply chain management plays a crucial role in manufacturing processes, where the flow of goods begins with raw materials and continues to the end consumer, involving various complexities and uncertainties at each stage. Computer-based modeling and simulation are highly useful methods for addressing operational issues within the supply chain, as they are capable of solving complex problems that would otherwise be time-consuming and challenging to analyze manually. On the other hand, manufacturing companies are often concerned about losing valuable time and resources during production; inaccurate estimations of raw materials, labor, and equipment not only result in financial losses but also cause adverse environmental impacts. The purpose of this study is to demonstrate that system dynamics modeling in sustainable supply chain management can be applied to apparel production in order to optimize the use of materials, labor, and equipment. This research employs Vensim as a modeling and simulation tool due to its ability to represent causal relationships, manage complex feedback loops, and visualize system dynamics over time. By utilizing Vensim, manufacturing companies can simulate various supply chain scenarios in a controlled environment, thereby minimizing resource waste and enhancing sustainability through the reduction of energy consumption, material use, and labor. Shirt manufacturing was selected as the case study because its production process is relatively straightforward, while this garment type is also widely used across the globe. The findings of this study indicate that simulation using system dynamics modeling with Vensim is an efficient method for optimizing the utilization of materials, labor, and equipment in shirt production. This leads to a more sustainable manufacturing process, as the developed model allows for the evaluation of supply chain policies and their impacts before implementation in real systems.
The Effect of Digital Promotion and Destination Attractiveness on the Cultural Commodification Process at the Garut Ram Tourism Site Avrianto, Alam; Murwenie, Ira; Farisya, Ghaida
Sainteks: Jurnal Sain dan Teknik Vol 7 No 02 (2025): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i02.919

Abstract

This study aims to analyze the influence of digital promotion and destination attractiveness on the process of cultural commodification in the Domba Tourism destination in Garut Regency, Indonesia. The Garut ram fighting tourism, a unique local cultural heritage, has yet to gain competitive strength compared to other destinations due to limited promotion and a lack of appealing cultural presentation. This research uses a quantitative approach with a descriptive-verificative method. Data were collected through a closed questionnaire distributed to 460 respondents who had visited the Domba Tourism site and were active social media users. The results of the regression analysis show that both digital promotion and destination attractiveness significantly influence cultural commodification, with digital promotion having a more dominant effect. Digital promotion plays a crucial role in expanding the reach of local cultural information and transforming traditional practices into attractive tourism products for both domestic and international markets. The study recommends optimizing an integrated digital marketing strategy to enhance the competitiveness of cultural tourism and support the sustainable preservation of local culture.
Proposed Improvement of Production Facility Layout at PT XYZ Using Activity Relationship Chart (ARC) Method to Minimize Material Handling Costs Widia, Iis; Bhagya, Tombak Gapura; Anggaliya, Pipin
Sainteks: Jurnal Sain dan Teknik Vol 7 No 02 (2025): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i02.921

Abstract

PT XYZ is a company engaged in the production of herbal food products. Observations indicate that the current production facility layout is not optimal, primarily due to the use of two separate buildings, which results in inefficient material flow. The presence of backtracking patterns and underutilized areas further contributes to increased material handling costs, which reach Rp5,846,182 per month. This study aims to propose an improved facility layout to minimize material transfer distance and time while reducing material handling costs, thereby enhancing production efficiency. The Activity Relationship Chart (ARC) method is employed to analyze the interrelationships between production activities based on spatial proximity. Data were collected through questionnaires distributed to production employees to identify layout requirements for greater efficiency. The ARC analysis results are visualized in the Activity Relationship Diagram (ARD) and Area Allocation Diagram (AAD), which serve as the foundation for designing the proposed layout. The evaluation of the new layout demonstrates significant improvements, including a reduction in material transfer distance by 31,999 meters per month, a decrease in transfer time by 17,480 seconds per month, and an efficiency gain in material handling costs amounting to Rp3,522,508 per month (60.25%). These findings are expected to serve as a reference for the manufacturing sector in designing more efficient production facility layouts to enhance productivity and reduce operational costs.
Production Layout Optimization Using SLP for Material Handling Cost Efficiency taufik, Muhammad Irham; Umrah, Deva; Djayadiningrat, Dimas
Sainteks: Jurnal Sain dan Teknik Vol 7 No 02 (2025): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i02.923

Abstract

The efficiency of facility layout plays a crucial role in determining material handling costs (OMH) within a production system. This study was conducted at PT AR Jaya, a tofu manufacturing plant in Tasikmalaya, which experienced excessive OMH due to inefficient layout and long material transfer distances between workstations. The objective of this research is to redesign the production facility layout to reduce OMH and improve workflow efficiency. A descriptive quantitative approach was employed, including field observation, primary data collection, and process mapping using Operation Process Chart (OPC), Multi Product Process Chart (MPPC), and From-To Chart. The redesign process adopted the Systematic Layout Planning (SLP) method, supported by Activity Relationship Chart (ARC) to analyze inter-process proximity. The findings reveal that the initial layout resulted in a total material transfer distance of 537.5 meters with a daily OMH of Rp60,000. The proposed layout reduced the transfer distance to 424.5 meters and OMH to Rp47,374 per day, achieving a cost efficiency of 12%. It can be concluded that a systematic facility layout redesign significantly reduces material handling costs and enhances production efficiency. It is recommended that the proposed layout be implemented and reviewed periodically to ensure long-term operational improvements.
Identifying Gojek Problems Using Servqual And Kano Methods Febriana, Dyah Ayu; binsyeh, muhammad idrus; Rizky DF3, Achmad; Oktavia A, Wanda; Rizky, Eka Nur; Hariastuti, Ni Luh Putu
Sainteks: Jurnal Sain dan Teknik Vol 7 No 02 (2025): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i02.933

Abstract

This study aims to analyze service quality issues faced by Gojek, an Indonesian digital platform, using the SERVQUAL and Kano methods. SERVQUAL measures the gap between user expectations and perceptions across five dimensions: Tangibles, Reliability, Responsiveness, Assurance, and Empathy. Data were collected from 78 Gojek users. Findings show that all 19 service attributes exhibit negative gaps, indicating customer expectations exceed perceived performance. Key attributes with the largest gaps, such as driver timeliness and responsiveness, are classified as Must-be or One-dimensional, critical for customer satisfaction. Some features were identified as Attractive or Indifferent, suggesting areas for strategic service improvements. This research offers a framework for Gojek to enhance service quality and maintain competitive advantage in a saturated digital market.

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