CHUKWUNEDUM, Ogochukwu Chinedum; NELSON OBINNA UBANI; JUDE EZECHI DARA. Polypropylene Plastic Cup Tensile Strength Optimization in Injection Molding from the Mold Variables Using Response Surface Methodology. Tech : Journal of Engineering Science, [S. l.], v. 2, n. 1, p. 63–82, 2026. DOI: 10.69836/tech.v2i1.745. Disponível em: https://jurnal.sinesia.id/index.php/tech/article/view/745. Acesso em: 30 apr. 2026.