Preparation and of colored paper yarn and its color fastness
In order to meet the market demand for colored paper yam,colored paint is used as colorant,polyvinyl alcohol(PVA)and polyacrylate are used as adhesive,and the paper yarn is dyed with the aid of single yarn sizing equipment.The effect of adhesive on the apparent color depth and color fastness of dyed paper yarn is discussed.The results show that the surface color of the colored paper yam dyed with the pigment paste prepared with two adhesives is uniform.The apparent K/S value of the dyed paper yarn increases gradually with the increase of the amount of paint in the color paste.Under the same coating dosage condition,the apparent color yield of colored paper yarn dyed with polyacrylate as coating binder is higher than that of PVA adhesive.The dry friction fastness of colored paper yarn prepared with polyacrylate as adhesive is basically 4~5,which is obviously better than that of PVA adhesive.The wet rubbing fastness and soaping fastness of the paper yarn dyed with the two adhesive coating pastes are low.
paper yarnadhesivepigment dyeingK/S valuecolour fastness