Production of water-based screen printing inks using turmeric as a color substance and cassava as adhesives

Abstract

The research on the production of water-based screen printing inks using turmeric as a color substance and cassava as adhesives is an experimental research. The researcher has set the research objectives. One is to produce the water-based screen printing inks using turmeric as a color substance and cassava as adhesives. Another objective is to test the quality of the screen printing inks using the appropriate amount between turmeric and cassava flour.
Finding summary of this research is summed up as follows; According to the experiment, the researcher analyzed the proper ratio among water, turmeric and cassava flour that would be adequate for producing water-based screen printing inks. The ration of 1.5:2:10 (turmeric : cassava flour : water) was the best fit. The inks were sticky enough to produce good-quality screening work the edge of the picture was sharp and the screening surface was rather smooth. After that the screen printing inks were measured in terms of their adhesiveness. The adhesiveness measurement was conducted based on the standard of ASTM D3359-90. The completed screen-printing works were tested with transparent tape no. 600. It was found that there was no fall-off of the inks due to the tape. This indicated that the quality of the screen printing inks came with an outstanding adhesiveness property. Moreover, the adhesiveness measurement was conducted based on the standard of ASTM D5264-98. A rub tester was deployed for rubbing for 50 times, 100 times, and 150 times. It was discovered that there was no fall-off of the inks regardless of the variant rubbing times. This pointed out that the screen-printing inks were exceptional rubbing resistant. Discoloration test was done through the use of Color Spectrophotometer for 30 days in a row. The delta-E values were less than 1.0 different. This illustrated that the discoloration was not visible to naked eyes.