The invention relates to a method for
machining an island superfine
fiber high density pinprick non-woven fabrics artificial leather, which is applied to the artificial leather manufacture and comprises the following processes: (1) the foundation process; (2) the PU wet method dipping process; (3) the continuous alkali abatement
fiber opening process; (4) the pigmentation, the flexible tentering and shaping, the peached finish on two sides by a roughing-up
machine; (5) the post treatments such as the dry method facing. The method is characterized in that the following processes are performed between the (4) process and the (5) process which are as follows: (6) the rolling
blanching at a high temperature of 80 to 120 DEG C; (7) the
high concentration polyurethane DMF solution with a weight ratio of PU: DMF of 100:50-93 is coated on the single side of the fabrics; (8) the time
delay of 30 to 80 seconds; (9) a low temperature of 10 to 15 DEG C
high concentration of 15 to 25 percent of DMF solution coagulating basin is coagulated, washed by water, dried and wrapped up. The method has the advantages that the manufactured finished leather has even thickness, excellent anti-tear strength and good ventilation property, the shortcoming that the cross breaks of the
fibril synthetic leather is concave is overcome; the single spreading effectively avoids the foaming phenomenon on the
coating surface; the section color is constant, etc.