Advantages of HT Jigger Dyeing Machine disperse dyes

Pay attention to avoid dye migration during pre-baking and baking. The hot-melt baking stage is an important stage in the transfer of disperse dyes from cotton to polyester. According to the heat resistance of the dye, that is, the fastness of the dye, select the appropriate one. Melting temperature and time. In the practice of dyeing, the transfer of dyes cannot be complete. There will always be a part of the dye remaining on the cotton to form cotton staining, which can be treated by restoring washing or soaping for post-dyeing. If the cotton part is to be over-dyed after the hot-melt dyeing, the post-treatment can be selected after the over-dyeing.

The high-temperature and high-pressure dyeing of disperse dyes can be carried out on high-temperature and high-pressure jigsaw dyeing machines and eruption and overflow dyeing machines. It is suitable for dyeing deep and thick colors. The dyeing pH value is generally controlled at 5-6. Acetic acid and ammonium dihydrogen phosphate are commonly used to adjust the pH value. . In order to keep the dye bath stable, a dispersant and a high-temperature leveling agent are required for dyeing fashion.

Commonly used carriers are o-phenylphenol, biphenyl, methyl salicylate, etc., because most of them are toxic and harmful to the human body, so they are rarely used at present.