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All Journal Jurnal Teknologi Industri Pertanian
Utomo, Prasetyo Hadi
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Agriculture, Biological Sciences & Forestry Engineering Industrial & Manufacturing Engineering

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USED TIRE ECOSYSTEM FOR THE RECLAIMED RUBBER INDUSTRY DEVELOPMENT AT PT BRIDGESTONE TIRE INDONESIA Suparno, Ono; Suprihatin; Indrasti, Nastiti Siswi; Hardjomidjojo, Hartrisari; Sunarti, Titi Candra; Utomo, Prasetyo Hadi; Yulistika, Efri; Triyonggo, Yunus; Matasik, Delfania
Jurnal Teknologi Industri Pertanian Vol. 35 No. 2 (2025): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24961/j.tek.ind.pert.2025.35.2.208

Abstract

Managing end-of-life tyres (ELTs) has become an urgent global issue because tyres are difficult to decompose naturally and take more than 50 years to break down. In the Jabodetabek (Jakarta, Bogor, Depok, Tangerang, Bekasi) area, ELT generation is estimated at 2.5–3 million units annually, with the most significant contributions from Karawang (1,000 units per month) and Bogor (820 units per month). Bias-ply used tires, which contain up to 70% rubber, have significant potential for recycling into raw materials for new tires through reclaimed rubber technology, aligning with the principles of a circular economy. This study aims to map the supply chain ecosystem of ELTs, identify key stakeholders, and optimise material flow to support the development of the rubber industry from reclaimed materials. The study employs a qualitative descriptive method. The number of research locations was determined using the Solvin method with an error rate of 25%. Observations were performed at 15 specific tire shops, two truck tire shops, three fleets, and three used tire collectors in the Jabodetabek and West Java areas. The findings indicate that the total estimated number of ELTs collected in Jabodetabek from tire stores, truck tires, fleets, and collectors reaches 2,860 monthly units. The main challenges in ELT management include limited storage facilities, low awareness of the economic value of waste, and a predominantly conventional management system. The study also reveals that only 20% of ELTs are utilised optimally, highlighting a significant untapped potential.  Keywords: used tires, reclaimed rubber, supply chain, circular economy
PEMETAAN JEJARING SOSIAL TECHNOPRENEUR AGROINDUSTRI DALAM TAHAP AWAL PROSES KEWIRAUSAHAAN Utomo, Prasetyo Hadi; Anggraeni, Elisa; Sailah, Illah
Jurnal Teknologi Industri Pertanian Vol. 34 No. 1 (2024): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24961/j.tek.ind.pert.2024.34.1.62

Abstract

A technopreneur's social network is a key factor in the early stages of the entrepreneurial process which includes the stages of searching for ideas, acquiring resources, and gaining legitimacy for the development of his business. It is hoped that a technopreneur's ability to create, manage and maintain social networks can improve the performance of the business he starts. This research aimed to map the social network of technopreneurs in the early stages of their entrepreneurial process and analyze their evolution in the three initial stages. The technopreneur social networks studied were betweenness, centrality, density and diversity. Networks are built using an ego network approach. The egos used were eight new businesses that are members of a business incubator with the criteria of food and non-food agro-industry, business unit age 2 – 5 years, in wall which means having an office in the incubator and out wall which means having an office outside the incubator. The network was analyzed using software. The results of the analysis show that technopreneurs who are on the in wall have a denser network than those on the out wall due to the large number of actors who come from the incubator network. The parameter values of betweenness, centrality, diversity and density change at each stage of the entrepreneurial process. Technopreneurs need diversity and betweenness in the idea search phase to increase the flow of information and ideas. Technopreneurs need centrality and density in the resource acquisition phase to increase resource access. Centrality and density are needed in the legitimacy phase to increase a technopreneur's reputation. Keywords: agroindustry, entrepreneurial stages, social networking, technopreneur
Co-Authors Elisa Anggraeni, Elisa Hartrisari Hardjomidjojo Illah Sailah Matasik, Delfania Nastiti Siswi Indrasti Ono Suparno Suprihatin Titi Candra Sunarti Yulistika, Efri Yunus Triyonggo, Yunus