Study on online foaming system of cellulosic spunlaced nonwoven

The cellulosic spunlaced nonwoven was dyed online with foaming system consisted of thickener,composite foamer,stabilizer,penetrating agent and dye.Quantitative investigation of thickener,foamer,foam stabilizer,penetrating agent and humidity content before fabric dyeing on the foaming ratio and the half-life was made.The results indicated that a better compatibility foaming system and a more satisfactory foam dyed product can be achieved with thickener amount of 7.2 ～ 8.4 g /L,ratio of foamerⅠ to Ⅱ 1.0 ～ 1.2,stabilizer mass concentration of 0.6 ～ 1.0 g /L,penetrating agent 7.3 ～ 8.3 mL /L,moisture content of fabric before dyeing ≤80%.The foam dyed fabrics have K /S value of 4.66,and dry abrasion fastness of 4 grade.