the washing solution squeeze and then place it into the washing solution containing the 1000 ml ethanol and 2 by weight of tween 20 the degree of substitution of the above chemically modified cellulose alginate co spun fibres is 0 29 the linear density of the above cellulose alginate co spun fibres is 3 dtex and the staple length is 50 mm the above chemically modified cellulose alginate co spun fibres are converted into nonwoven pads by a carding and needle punching process after slitting cutting packaging and sterilization the dressing 39 s absorbency and wet strength is measured as 19 g 100 cm 2 and 0 35 n cm respectively 1 at room temperature 100 g cellulose alginate co spun fibres purchased from smartfibres are placed into 600 ml 25 by weight sodium hydroxide solution for 50 minutes 2 the above fibers are taken out from the solution and squeezed to remove excessive solution the fibres are then immersed into the reacting solution which has been preheated to 38 u00b0 c the fibres are kept in the solution for 60 minutes at 50 60 u00b0 c the said reacting solution consists of 1000 g sodium chloroacetate 1630 g 30 sodium hydroxide solution 2500 g ethanol and 1450 g deionized water 3 the fibres are taken out of reaction solution and then placed them into the acid solution for washing for 30 minutes repeat the washing twice in this solution until its ph value become neutral or a slightly acidic the said acid solution consists of 500 ml ethanol 300 ml pure water and 200 ml acid acetic 4 take the fibres out of the washing solution squeeze and then place it into the washing.