Qingdao Jifa Group Co., Ltd.

Qingdao Jifa New Material Co., Ltd.

Crrc Qingdao Sifang Co., Ltd.

Weidong Yang

Jian Wang

Xin Yang

Hongyong Cao

Dongxiao Yang

Hongjun Yi

Shaobing Liu

Gang Wan

Dapeng Lin

Chongbo Liu

Yuhua Huang

Junfeng Zhou

Jianfa Lv

Qingda Cao

A waterless dyeing device for cone yarn, a waterless dyeing method and a produce are provided; wherein the device comprising: a dye autoclave (); a dyeing autoclave (); a recycle autoclave (); a dyeing circulation system in which the dye autoclave (), the dyeing autoclave () and the recycle autoclave () are in fluid communication with; wherein further comprises: a cone yarn inlet formed on the top of the dyeing autoclave (), which is provided with a sealing cap (); a cone yarn center shaft () vertically disposed at the center inside the dyeing autoclave, which is a perforated outlet tube with fluid discharge holes opened on the side wall; an intake pipe () disposed on the bottom of the dying autoclave () which is in communication with the cone yarn center shaft (); a dyeing autoclave outlet () disposed on the dying autoclave (); and a CO2 container (), a pressure pump, a circulation pump () and conduits which are included in the dyeing circulation system. The dyes are disposed in the dye autoclave () and the cone yarns are disposed inside the dyeing autoclave (), CO2 is introduced into the dye autoclave () to dissolve the dyes gradually, and the CO2 carrying the dyes to the dyeing autoclave () to dye and diffuse. The present invention has the advantages of being high in production efficiency, even in dyeing effect and high in safety, and is suitable for waterless dyeing of polyester cone yarns.

Waterless dyeing device and method for bobbin yarn, and product

A method for modifying a non-woven fabric of chitosan fiber. The method includes: adding succinic anhydride to an industrial alcohol, ethanol, or acetone; controlling the mass ratio of succinic anhydride to the non-woven fabric at between 0.8 and 3.5; and stirring the resulting mixture until the succinic anhydride has dissolved to yield a succinic anhydride mixed solution; placing the succinic anhydride mixed solution in a constant temperature shaking bath; heating the succinic anhydride mixed solution; adding an HCl solution to the succinic anhydride mixed solution, and stirring evenly to yield a HCl mixed solution; immersing the non-woven fabric in the HCl mixed solution; dehydrating; immersing the non-woven fabric in ethanol or acetone; immersing the non-woven fabric in anhydrous ethanol or pure acetone; dehydrating; and air drying the non-woven fabric.

Method for modifying non-woven chitosan fabric

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Qingdao, China

Weidong Yang