Abstract Large deformations under in-plane compression of paperboard appear in forming processes like hydroforming, pressforming and deep drawing, but the mechanisms deformation have not been studied on a micromechanical level. A constrained test is presented. This allows for compression, buckling, wrinkling compaction. The realized using DEBEN CT-500 in-situ tester laboratory microtomography s...

Malang Regency produced 690,136 tons banana in 2016. The production is line with the waste (banana stalks). Banana stalks contain 83.3% cellulose and 2.97% lignin, of which can be used as raw material for paperboard making. However, leaf paper has a low tensile strength 7.45 N/mm2, so additional fibers to strengthen necessary, such coconut coir 46.67 N/mm2. This research aimed formulate making,...

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This study presents the research on the chemical analysis and genotoxicity of 28 virgin/recycled paper products in food-contact use. In the chemical analysis, paper products were extracted by reflux with ethanol, and analyzed by gas chromatography/mass spectrometry. 4,4'-bis(dimethylamino)benzophenone (Michler's ketone: MK), 4,4'-bis(diethylamino)benzophenone (DEAB), 4-(dimethylamino)benzopheno...