ИССЛЕДОВАНИЕ КАЧЕСТВА ОТТИСКОВ ТЕРМОТРАНСФЕРНОЙ ПЕЧАТИ НА РАЗЛИЧНЫХ ТКАНЯХ
Experimental studies of the quality of printed images by thermal transfer printing on fabrics of various compositions, in particular polyester (100%); cotton (100%) and fabric composition (60% polyester and 40% cotton) have been done. Transfer printing is performed on TD 380 TH press of the company Everbright Machinery Co. LTD at technological modes (temperature 140 – 160 °C, time 5-15 s, pressure 3-4 Bar). The quality of the line reproduction in the system: photoplate – stencil plate – decal (transfer) – imprint on fabric is studied. The synthetic paper from Hicotex company is used for the decal manufacturing. The ink fixing on the imprint takes 3 minutes using a Mikon flash dryer. A model test-form is used to assess the quality, on which a scale for the optical density assessment, a text, and a scale for the excretory capacity assessment are applied. The line thickness is determined using MPB-2 microscope, and the optical density is measured with Gretag SPM 50 densitometer. The studies have shown that the graphic line distortions are observed in the process of transferring small elements on the fabrics under study. Significantly higher quality of lines is observed on 100% polyester fabric. This may be due to the fabric texture and the varying degrees of ink absorption. As a result of the research, graphical dependencies have been constructed, which make it possible to assess the quality of thermal transfer printing and the accuracy of image reproduction on various fabrics.