47results about How to "Increase the degree of splitting" patented technology

The invention relates to a short-flow environment-friendly degumming and bleaching method for hemp fibers. The method is characterized by performing one-bath degumming and bleaching on hemp bast by adopting a deep oxidation principle and utilizing materials such as a nano-clay preparation, hydrogen peroxide and the like. The method comprises the following steps of: 1) performing impurity-removing washing on the hemp bast for 1 to 3 times by using recycled washing water; 2) performing temperature-rising washing on the hemp bast for 1 to 3 times by using the recycled water again; 3) performing the one-bath degumming and bleaching on the hemp bast by using 3 to 4 g / L nano-clay preparation, 3 to 4 g / L sodium hudroxide, 1 to 2 g / L sodium carbonate and 5 to 10 g / L hydrogen peroxide; 4) washing with water after performing the one-bath degumming and bleaching; and 5) processing the hemp bast into ramie cotton blended yarns after shaking hemp, curing and drying. Compared with the prior art, the method has the advantages that: the processes of embossing the hemp and beating the hemp are saved by adopting a deep oxidation method; the production flow is shortened; and the water dosage is greatly reduced; 2) the whiteness and the softness are high; and 3) the chemical oxygen demand (COD) value of the process waste water is low.

The invention relates to a cellulomonas fimi DA 8 bacterial strain as well as an acquiring method and application thereof. The bacterial strain has the capability of producing pectinase and hemicellulase and has flax degumming activity. The cellulomonas fimi bacterial strain screened by the method has the advantages of large enzyme yield, complete enzyme system, no toxicity, rough culturing condition and the like; after used for flax degumming, the composite degumming enzyme solution not only greatly shortens a degumming period, but also reduces the cost, the fiber splitting degree is improved, and the degumming efficiency reaches 95%. The degumming method requires basically the same equipment required in the traditional warm water degumming method so that the method is especially suitable for improving a process on the basis of the traditional equipment in old enterprises; the cellulomonas fimi bacterial strain screened with the method not only can be used for flax raw-stem degumming, roving scouring, flax fabric biological pretreatment, but also can be used for bast fiber degumming and biological pretreatment of bast fiber plants, such as ramie, jute, hemp and the like.

The invention relates to a fiber bundle dividing and washing method and a fiber bundle dividing and washing device. The method comprises the following steps of: 1) arranging a plurality of groups of fiber dividing and washing units and a fiber output unit on a frame, wherein each unit is provided with a running rotating crawler; 2) passing a feeding roller through a crawler input end of each fiber dividing and washing unit so as to convey the fiber bundle forward, making the fiber bundle enter a fiber dividing and washing area which is provided with a beater and a fiber dividing roller at intervals, simultaneously opening a high pressure water pipe which is arranged above the beater and the fiber dividing roller, and performing washing soaking, beating, carding and fiber dividing on the fiber bundle edges; 3) feeding the fiber treated by the previous fiber dividing and washing unit to the next fiber dividing and washing unit for continuous fiber dividing and washing; and 4) feeding the fiber treated by the last fiber dividing and washing unit into a fiber dividing input area, performing water squeezing operation through a squeezing roll, feeding the fiber into a cloth arrangement mechanism, arranging and folding the strip-shaped fiber through the cloth arrangement mechanism, and feeding the fiber into a fiber storage box. The fiber bundle dividing and washing method and the fiber bundle dividing and washing device can be widely applied to fiber dividing and washing treatment for various bast fibers, leaf fibers, and grass family fibers.