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All Journal KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Populer: Jurnal Penelitian Mahasiswa Indonesian Journal of Multidisciplinary on Social and Technology Jurnal Teknologi Kimia Mineral JURNAL ILMIAH TEKNIK INDUSTRI DAN INOVASI (JISI) Jurnal Teknik Industri dan Manajemen Rekayasa Teknik: Jurnal Teknik Mesin, Elektro dan Ilmu Komputer
Sahiba Sahila
Politeknik Negeri Jakarta
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Social Sciences Other

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Pengaruh Konsentrasi Pigmen terhadap Nilai CIELAB dan ΔE Tinta Fleksografi dengan Arah Warna Bluish Shade pada Substrat LDPE White Prihan Ramadan; Sahiba Sahila; Heribertus Rudi Kusumantoro
Indonesian Journal of Multidisciplinary on Social and Technology Vol. 4 No. 2 (2026): Maret - Juni
Publisher : PT Ilmu Data Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69693/ijmst.v4i2.10946

Abstract

Pigmen berperan sebagai sumber utama pembentuk warna pada tinta cetak. Keberadaan tinta dalam proses pencetakan sangat penting karena berfungsi menghasilkan tampilan warna pada berbagai jenis media, seperti kertas, tekstil, maupun plastik. Selain memberikan nilai estetika, tinta juga berkontribusi terhadap kualitas dan daya tahan hasil cetak. Variasi konsentrasi pigmen dapat menyebabkan perbedaan nilai warna yang dihasilkan, sehingga diperlukan formulasi yang tepat untuk mengatasi permasalahan tersebut. Penelitian ini bertujuan untuk menganalisis pengaruh konsentrasi pigmen terhadap karakteristik warna bluish shade tinta fleksografi pada substrat LDPE White menggunakan parameter CIELAB dan ΔE. Metode penelitian dilakukan dengan memvariasikan konsentrasi pigmen merah pada lima formulasi tinta, sedangkan komposisi varnish dijaga tetap. Setiap formulasi dicetak menggunakan metode proofing hand anilox. Pengujian dilakukan untuk mengetahui kecenderungan perubahan arah warna dan intensitas warna hasil cetak menggunakan spektrofotometer berdasarkan parameter L, a, b, dan ΔE. Pengujian ini juga dilakukan untuk mengevaluasi tingkat kesesuaian warna terhadap standar yang ditetapkan pelanggan. Hasil penelitian menunjukkan bahwa variasi konsentrasi pigmen sebesar 61–65 gram memberikan pengaruh terhadap nilai CIELAB dan ΔE yang dihasilkan. Formulasi T4 dengan konsentrasi pigmen 64 gram menghasilkan karakteristik warna yang paling mendekati standar, dengan nilai L sebesar 46,32, a sebesar 67,74, dan b sebesar -9,82 serta nilai ΔE terendah sebesar 0,89. Hasil ini menunjukkan bahwa konsentrasi pigmen berperan dalam pembentukan karakter warna bluish shade pada tinta fleksografi dan memengaruhi tingkat perbedaan warna yang dihasilkan pada substrat LDPE White.
Analisis proses pembuatan kalender berbahan dasar kertas daur ulang dengan campuran bunga telang menggunakan pendekatan 5W1H Jaka Santosa; Sahiba Sahila; Rachmah Nanda Kartika; Rafi Aditama; Muhammad Ivan Maulana; Mafaid Rizky Pratama; Musthofa
Jurnal Teknik Industri dan Manajemen Rekayasa Vol 4 No 1 (2026)
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jtimr.v4i1.13714

Abstract

Commercial calendar production typically uses virgin paper, contributing to increased wood fiber consumption and waste. This condition encourages the development of environmentally friendly alternatives using recycled materials. This study aims to produce a desk calendar made from recycled paper mixed with butterfly pea flowers as a natural dye and aesthetic element, and to evaluate the effectiveness of its production process.The study involved several stages, including recycled paper processing (soaking, pulping, mixing with butterfly pea petals, sheet forming, drying, and cutting) and calendar assembly (cutting carton board, applying linen cover, printing A5 calendar design, punching spiral holes, installing spiral wire, and attaching a 7×7 cm glass component). The production process was evaluated using the 5W1H framework to identify key factors, constraints, and methodological effectiveness.The resulting calendar displays natural visual characteristics,coloration from butterfly pea pigment, and an additional functional element through the integration of a small glass piece. Analysis shows that paper-making is the most time-consuming stage, while the assembly process is relatively efficient.The recycled paper calendar incorporating butterfly pea flowers was successfully developed as an eco-friendly product with strong aesthetic value and added functionality. Further improvements are recommended for achieving consistent paper thickness and optimizing drying time.
Pengembangan produk ecovault berbahan limbah kertas menggunakan pendekatan Design Thinking Salma Aulia Husin; Sahiba Sahila; Rachmah Nanda Kartika; Fadillah Tri Widiawati; Florenthia Meylianthi; Kholifaturrahma; Erlangga Saputra
Jurnal Teknik Industri dan Manajemen Rekayasa Vol 4 No 1 (2026)
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jtimr.v4i1.13723

Abstract

The increasing volume of cellulose-based waste has intensified the need to utilize paper waste into products with higher functional value. This material has considerable potential to be developed into functional products when processed through a systematic design approach. This study aims to develop Ecovault, an environmentally friendly storage product made from cardboard and paper pulp, using the Design Thinking approach. During the empathize stage, a survey was conducted to identify user needs, which indicated strong support for the use of recycled materials. The define stage identified two main issues: the low utilization of paper waste and the demand for small-sized storage products with an attractive appearance. The initial concept was realized in the form of a flower-pot-shaped storage through 3D rendering and subsequently tested through prototype development. The first prototype experienced structural issues, leading to a design revision by changing the pot shape from cylindrical to box-shaped. This modification improved the stability, strength, and structural neatness of the final prototype. The results demonstrate that paper waste can be transformed into functional and aesthetic storage products through an appropriate design approach.
PEMBUATAN KERTAS INDIKATOR ALAMI DARI BUNGA TELANG (CLITORIA TERNATEA), KUNYIT (CURCUMA LONGA), DAN JANTUNG PISANG (MUSA ACUMINATA) Sahiba Sahila; Khalda Khairunnisa Mulyana; Tsalis Muthia Kamila; Mitzy Balqist Dhabitah; Nahya Alya; Achmad Dzaki; Anisa Nuraini
KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Vol 9 No 2 (2026): Jurnal Katalis Volume 9 Nomor 2 Tahun 2026
Publisher : Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/katalis.v9i2.14606

Abstract

The use of synthetic indicators, which may cause chemical pollution and are relatively expensive, has encouraged the development of natural indicators that are more environmentally friendly, economical, and easily accessible. This study aimed to investigate the potential of butterfly pea flower (Clitoria ternatea), turmeric (Curcuma longa), and banana bract (Musa acuminata) extracts as materials for natural indicator paper within a pH range of 1–14. The research was conducted by extracting each material using 96% ethanol with a ratio of 1:4 for 24 hours. The resulting filtrates were diluted with distilled water and used to soak filter paper for 30 minutes to produce natural indicator papers. The indicator papers were then tested in solutions with pH values ranging from 1 to 14 to evaluate their color changes, sensitivity, and working range. The results showed that butterfly pea flower exhibited the best performance with distinct color changes from red in acidic conditions, purple near neutral pH, to green and yellow in strongly alkaline conditions. Turmeric demonstrated significant color changes mainly in alkaline conditions, changing from yellow to orange and reddish-brown, making it more suitable as an indicator for alkaline solutions. Meanwhile, banana bract showed color changes with lower intensity and less contrast compared to butterfly pea flower and turmeric. Based on the findings, butterfly pea flower has strong potential as a versatile natural indicator with a wide pH range, while turmeric is more effective for detecting alkaline solutions.
Pengaruh Jenis Laminasi terhadap Kuat Tarik dan Perubahan Warna pada Pressure sensitive label PE White Miko Dwi Saputra; Vika Rizkia; Sahiba Sahila
JURNAL ILMIAH TEKNIK INDUSTRI DAN INOVASI Vol. 4 No. 3 (2026): Juli : Jurnal Ilmiah Teknik Industri dan Inovasi
Publisher : CV. ALIM'SPUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59024/jisi.v4i3.1981

Abstract

Pressure sensitive labels (PSLs) made of polyethylene (PE) white are widely used in the packaging industry due to their flexibility, moisture resistance, and ease of application on various substrates. This study aimed to examine the effect of glossy and matte lamination on the tensile strength and color difference (ΔE) of PE white PSLs. An experimental method was employed, with tensile testing conducted using a universal testing machine (UTM) in accordance with ASTM standards and color measurement performed using a spectrodensitometer based on the CIE Lab system. The samples were divided into three treatment groups, namely no lamination, glossy lamination, and matte lamination, with ink coverage controlled at two design conditions, full ink and minim ink. The results indicated that lamination type significantly affected both the mechanical and visual characteristics of the labels. In the tensile strength test, the highest mean value was obtained by one treatment group, indicating superior resistance to tensile loading. In terms of color stability, higher ΔE values indicated greater color change and lower lightfastness, whereas lower ΔE values reflected better color retention. Overall, the findings show that the combination of lamination type and ink coverage influences the performance of PE white PSLs in both mechanical strength and color stability.
Pengaruh Sorbitol Terhadap Kuat Tarik Dan Daya Serap Air Bioplastik Dari Pati Beras Ketan Putih Nanda Ayu; Sahiba Sahila; Heribertus Rudi Kusumantoro
JURNAL TEKNOLOGI KIMIA MINERAL Forthcoming issue
Publisher : Politeknik ATI Makassaar

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Permasalahan limbah plastik mendorong pengembangan bioplastik berbasis bahan terbarukan yang memiliki karakteristik mekanik dan ketahanan air yang memadai. Penelitian ini bertujuan untuk menganalisis pengaruh variasi sorbitol terhadap kuat tarik dan daya serap air bioplastik berbasis pati beras ketan putih dengan penggunaan kitosan dalam jumlah tetap. Film bioplastik dibuat melalui metode melt-intercalation. Bioplastik dibuat menggunakan 5 gram pati beras ketan putih dan kitosan tetap sebesar 1 gram pada setiap sampel, dengan variasi penambahan sorbitol sebesar 3, 4, 5, 6, dan 7 ml. Pengujian kuat tarik dilakukan menggunakan prinsip perbandingan gaya maksimum terhadap luas penampang mengacu pada standar JIS Z-1707:1975, sedangkan daya serap air dihitung berdasarkan perubahan massa setelah perendaman mengacu pada prinsip dasar ASTM D570 dengan modifikasi waktu perendaman. Hasil penelitian menunjukkan bahwa peningkatan sorbitol menurunkan kuat tarik dari 1,68 MPa pada volume sorbitol 3 ml menjadi 0,97 MPa pada volume sorbitol 7 ml. Sebaliknya, daya serap air meningkat dari 29,41% pada volume sorbitol 3 ml menjadi 37,39% pada volume sorbitol 7 ml. Penambahan volume sorbitol 3 ml menghasilkan karakteristik terbaik pada uji kuat tarik dan daya serap air, sedangkan peningkatan volume sorbitol hingga 7 ml menurunkan kekuatan mekanik dan meningkatkan daya serap air film bioplastik secara signifikan (p < 0,05).
Perancangan Alat Uji Luntur Warna Terhadap Gesekan Dan Analisis Pengujian Menggunakan Parameter Δe Wildan Zamzami; Yoga Putra Pratama; Sahiba Sahila
Jurnal Teknik Mesin, Elektro dan Ilmu Komputer Vol. 6 No. 2 (2026): Juli : Jurnal Teknik Mesin, Elektro dan Ilmu Komputer
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/teknik.v6i2.12191

Abstract

This study aims to design and build a simple crockmeter to test the colour-fastness to rubbing of digitally printed paper using an Arduino Uno R3-based automatic friction mechanism. The background of this research is the limited availability of an affordable and easy-to-operate crocking tester in educational laboratories, while commercial units are costly and complex. The device was developed using the Research and Development (R&D) method through three stages: 3D design using Autodesk 3D Max, prototyping with PVC board, and final construction using UNP steel frame, a DC motor JGA25-370, an L298N motor driver, and a 900-gram dry load referring to the AATCC Test Method 8 standard. Testing was conducted on five samples of 250 gsm ivory paper with black digital print, each subjected to ten dry rubbing cycles using AATCC crocking square test fabric. The colour change before and after rubbing was measured with a spectrodensitometer using the CIE L*a*b* parameters to calculate the total colour difference (ΔE). The results show that the developed crockmeter is able to perform the rubbing test consistently across the five samples, with a relatively uniform ΔE value, indicating that the tool can represent the dry-rubbing colour-fastness test reasonably well. This finding implies that the device is feasible to be used as a low-cost practicum medium that supports material-testing education in graphic engineering laboratories
Upaya Pengendalian Kualitas Guna Menurunkan Angka Cacat Reclaiming pada Industri BOPP PT XYZ Tbk Menggunakan Metode Root Cause Analysis (RCA) Muhammad Iksan Ramadan; Yoga Putra Pratama; Sahiba Sahila
Populer: Jurnal Penelitian Mahasiswa Vol. 5 No. 2 (2026): Juni: Populer: Jurnal Penelitian Mahasiswa
Publisher : Universitas Maritim AMNI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58192/populer.v5i2.5074

Abstract

PT XYZ Tbk is a Biaxially Oriented Polypropylene (BOPP) film manufacturing company that continues to face a high level of reclaiming activities due to product defects. This condition leads to increased raw material waste, higher production costs, and reduced production efficiency. This study aims to identify the root causes of reclaiming defects and develop improvement recommendations to reduce the defect rate using the Root Cause Analysis (RCA) method with the fishbone diagram and 5 Whys approach. This research employed a qualitative method using reclaiming data collected from July to September 2025 through observations, interviews, and company documentation. The results showed that the total reclaiming waste reached 1,079,223.88 kg, with the largest defect category consisting of Cut Sheet, Edge Trim, and Reject Roll, accounting for 49.97%, followed by Jumbo Balance at 32.16%. The RCA results indicated that the root causes of the defects were influenced by man, machine, method, material, and environment factors, which are interconnected throughout the production process. Based on these findings, the proposed improvements include enhancing operator competence through training, implementing regular preventive maintenance, strengthening compliance with Standard Operating Procedures (SOP), improving material quality control, and optimizing workplace conditions. The implementation of these improvement strategies is expected to reduce reclaiming defects, improve product quality, and create a more effective and efficient BOPP production process at PT XYZ Tbk.
Co-Authors Achmad Dzaki Anisa Nuraini Erlangga Saputra Fadillah Tri Widiawati Florenthia Meylianthi Heribertus Rudi Kusumantoro Jaka Santosa Khalda Khairunnisa Mulyana Kholifaturrahma Mafaid Rizky Pratama Miko Dwi Saputra Mitzy Balqist Dhabitah Muhammad Iksan Ramadan Muhammad Ivan Maulana Musthofa Nahya Alya Nanda Ayu Prihan Ramadan Rachmah Nanda Kartika Rafi Aditama Salma Aulia Husin Tsalis Muthia Kamila Vika Rizkia Wildan Zamzami Yoga Putra Pratama