Person: AYDEMİR, CEM
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AYDEMİR
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CEM
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Publication Open Access Sustainability in the print and packaging industry(2023-07-01) TUTAK, DOĞAN; AYDEMİR, CEM; YENİDOĞAN, SEMİHA; Tutak D., Aydemir C., Yenidoğan S.In the printing and packaging industry, sustainability is defined as manufacture and practices that reflect responsibility for the environment and resources to meet the needs and expectations of future generations. In this article, raw material management, cellulose resources, industrial forests, ecological and renewable alternative fiber resources were examined in the framework of the sustainability of the printing and packaging industry. The recycling of printed materials and packaging and the effects of paper-ink types and product design in this recycling have been discussed. The effect of separation and processing at the source on the efficiency of paper recycling, economy and ecology was emphasized. The greenhouse gas emissions of solvents used in inks and cleaners, the impact on climate change, water footprint and carbon footprint issues were examined. Suggestions have been made on environmental sustainability in the printing industry, what needs to be done for a competitive production, successful optimization, minimization of waste, use of existing possibilities, recycling and evaluation of alternatives and use of clean energy.Publication Metadata only Effects of color mixing components on offset ink and printing process(TAYLOR & FRANCIS INC, 2017) AYDEMİR, CEM; Aydemir, Cem; Yenidogan, Semiha; Karademir, Arif; Arman, EmineIn printing, the most important element is to obtain the correct substrate and ink combination. Transparent white and opaque white are used for the lightening of printing inks, but they are also an important component for the mixing of inks. The primary objective of this study was to assess the result of using transparent and opaque white in mineral oil-based offset printing inks on the rheological and printability properties of these inks as well as the ideal mixing ratios in terms of print quality. Transparent and opaque white were added into the standard offset magenta ink variable ratios. Differences in ink viscosity, tack, and flow (rheological) values affect such parameters as adhesion, transferability, and printing stability in these inks. Prints were made on matt-coated papers of the same grammage with these inks, and contact angle, solid ink density, color strength, and print gloss values of these ink films were measured. Color differences (Delta E*(ab)) of inks in comparison to the standard ink were calculated and the effects of transparent and opaque white on the rheological and printability properties of the ink were presented. Finally, the ideal mixture ratios of transparent and opaque white into the ink were determined in terms of print quality and recommendations were presented.Publication Metadata only The use of natural (Pinus pinaster) resin in the production of printing ink and the printability effect(WILEY, 2020) AYDEMİR, CEM; Karademir, Arif; Aydemir, Cem; Yenidogan, Semiha; Arman Kandirmaz, Emine; Kiter, Rukiye G.Alkyd resins are generally used in the production of printing inks. All industries look for alternative raw materials in the production of ink with the growing inclination toward using natural products. Resins forming the vehicle of the ink to be obtained from natural resources will provide benefits for the environment, nature, and living creatures. The aim of the study was to promote the use of natural resin in the ink system. NaturalPinus pinasterresin was added into vegetable and mineral oil-based solvents in pure form with alkyd resin in different amounts and ink varnishes of different combinations were prepared. Then, printing inks were produced from these varnishes in pure and hybrid form. Following the assessment of the rheological properties of the inks prepared, printing tests were conducted to assess the printing quality parameters. Ideal mixing ratios of the natural resins in the ink were determined for printability. The environmental importance and advantages of the use of natural resins were discussed. Recommendations were given in line with the results to encourage widespread use of natural resins in near future.Publication Metadata only Plastik FilmAmbalaj Malzeme Bileşenlerinin Migrasyonu(2019-01-11) YENİDOĞAN, SEMİHA; AYDEMİR, CEM; HAYTA P., YENİDOĞAN S., AYDEMİR C., MUTLU B.Publication Metadata only Evaluation of Sound Absorption, Printability, and Some Mechanical Properties of Thin Recycled Cellulosic Sheets Containing Wool, Ceramic Fiber, and Cotton Dust(TAYLOR & FRANCIS AS, 2012) AYDEMİR, CEM; Karademir, Arif; Yenidogan, Semiha; Aydemir, Cem; Kucuk, HalukA number of thin biocomposites were produced from waste corrugated board pulp with 15% and 30% blending of wool fibers (WF), ceramic fibers (CF), and cotton dust (CD), respectively. The highest sound absorption value was obtained from samples containing 30% wool fibers. Printability of control sheets unfortunately was remarkably damaged. Ceramic fibers improved the thermal stability of control sheets, which was followed by WF and CD. Tensile and burst indexes of samples, however, were greatly reduced. It was furthermore found that CD, CF, and WF additions increased the air permeability values of resultant papers parallel to great reduction on densities.Publication Open Access The examination of vegetable- and mineral oil-based inks' effects on print quality: Green printing effects with different oils(SAGE PUBLICATIONS LTD, 2018-07) AYDEMİR, CEM; Aydemir, Cem; Yenidogan, Semiha; Karademir, Arif; Kandirmaz, Emine ArmanIntroduction: Printing inks oil selection is related to the desired nature of the varnish in the ink production. Petroleumderived mineral oils and vegetable oils can be used in offset inks. Methods: In this study, the behaviors of vegetable- and mineral oil-based inks on uncoated and coated paper surfaces were investigated in terms of printability. Solid tone test prints were done with offset printing of these inks. Print gloss of the printed samples was measured and a light fastness test was implemented on these samples in order to determine the resistance to fading. Absorption behavior and contact angles of the ink-printed films on the test papers were measured with the sessile water drop method depending on time, and surface energies were calculated. Results: On both paper types, linseed-soybean oil-based vegetable ink gave the highest brightness value. The lowest print gloss results on the paper were obtained from soybean oil-based inks. The lowest color change was recorded with mineral oil-based inks on gloss-coated papers. According to the ink-film-surface relation, when the contact angle is high, surface energy decreases and the absorbency of the ink-film is lower. Conclusions: In this study, the behaviors of vegetable- and mineral oil-based inks on different paper surfaces, and the effect on the quality of printability as well as differences, have been evaluated, taking environmental and health factors into consideration.