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479results about How to "Reduce process" patented technology

Tornado cyclone type device for preparing nano twisting electrostatic spinning nozzle

ActiveCN104726943ATwisting method is simpleReduce processFilament/thread formingElectrospinningYarn
The invention discloses a tornado cyclone type device for preparing a nano twisting electrostatic spinning nozzle. The tornado cyclone type device for preparing the nano twisting electrostatic spinning nozzle mainly comprises an airflow guide pipe, a spinning feed cylinder, a connecting piece, an air duct, an air compressor, a pore electrode plate, a high voltage electrostatic generator, a twisting collecting roller, a twisting degree keeping rotary table, tangential airflow holes, bolts, heating rings and a temperature sensor; the airflow guide pipe, the spinning feed cylinder and the connecting piece are coaxially connected with one another through threads from inside to outside, a vertical airflow inlet of the upper end of the airflow guide pipe is connected with the air compressor , a feed inlet is located on the upper surface of the connecting piece which is connected with the air duct through the bolts, and the tangential airflow holes are located at the lower end of the air duct and connected with the air compressor; the pore electrode plate is located under the nozzle, the twisting collecting roller and the twisting degree keeping rotary table are located under the pore electrode plate which is communicated with the high voltage electrostatic generator, and the spinning feed cylinder is grounded. According to the tornado cyclone type device for preparing the nano twisting electrostatic spinning nozzle, tornado cyclone is formed through the coupling of airflow in the vertical direction and airflow in the tangential direction to conduct twisting on fibers directly, the process is reduced, and the twisting degree of twisting yarns can be adjusted through adjusting the airflow velocity.
Owner:BEIJING UNIV OF CHEM TECH

Method for cation modification and salt-free dyeing of cellulose fabric through one bath

The invention discloses a method for cation modification and salt-free dyeing of a cellulose fabric through one bath. The method comprises the following steps: (1) preparation of a modified dyeing liquid, including uniformly dissolving a reactive dye and sodium hydroxide in soft water, uniformly mixing the reactive dye and sodium hydroxide, adding a modifier in the obtained mixture, and performing uniform mixing to obtain the modified dyeing liquid; and (2) modification dyeing of a fabric, including performing dip padding treatment of a cellulose fabric with the modified dyeing liquid prepared in the step (1), winding the fabric into a roll after one dip and one padding, covering the roll with a film, putting the obtained roll at the room temperature, and performing room-temperature washing, acid washing, soaping, hot water washing, room-temperature washing and drying to the obtained fabric to obtain the salt-free dyed fabric. Cation modification and salt-free dyeing are carried out in one bath. The method is less in process, simple in technology and easy to operate. Acid washing and multiple water washing before dyeing in a two-bath method is not required, so that the method is less in water consumption and the process is easy to control. Modification and dyeing are carried out at the room temperature, and hydrolysis of the modifier and dye is reduced.
Owner:SOUTH CHINA UNIV OF TECH +1

Method for direct modifying and yarn flattening of reclaimed material woven bag

The invention discloses a method for direct modifying and yarn flattening of a reclaimed material woven bag, belonging to the technical fields of woven bag production and environmental protection of chemical waste substances. The method is finished by nine major processes including preparation, dosing, melting, filtration, extrusion and membrane output, water cooling, splitting, drawing and winding, and the method has the beneficial effects that the waste plastic is melted and directly subjected to yarn flattening, the process and energy consumption are reduced, and labor power is reduced; a small amount of master batch, modifier, whitening agent and lubricant is added during the dosing; after the melting, the tensile strength and fineness of the yarn-flattened material are reasonably improved through the filtration, the membrane output, the water cooling and the drawing; particularly, the water cooling is performed at 50-60 DEG C, and then the drawing times is set as 6.5; according to a test, the warp-direction pulling strength and the weft-direction pulling strength of the produced flattened yarn are both greater than 700N/50mm, the tensile strength of the flattened yarn is greatly enhanced, and the problem of yarn breakage in a weaving process is avoided; and by adopting waste plastic as raw material, the environmental pollution is effectively reduced.
Owner:重庆市广博塑料袋有限公司

Rotary extrusion forming method of non-circular cross-section parts and equipment thereof

InactiveCN101412058AReduce processEasy to processCircular sectionEngineering
The invention provides a spin forming method for non-circular section parts and equipment thereof. The method comprises the following steps: after a workpiece is mounted, a main shaft starts to drive the workpiece to rotate, and a rotary wheel device transversely feeds; within one-circle rotation of the main shaft, the rotary wheel device quickly moves forward and backward for a plurality of times, a coordinate relationship is maintained between rotary angles of the main shaft; at the same time, a platform is longitudinally moved to drive the rotary wheel to feed longitudinally, so that the workpiece, after spin forming, is formed into non-circular section parts; the equipment consists of a machine tool and a control platform circuit which are connected with each other, the machine tool comprises a main spindle box, a machine tool body, a longitudinal motion platform, a tail-top device, a servo motor feeding device, a hydraulic station, a linear motor feeding device and a rotary wheel device, the main spindle box and the tail-top device are coaxially arranged on both ends of the machine tool body, the hydraulic station is connected with the tail-top device by an oil pipe, the servo motor feeding device is arranged on one part of the machine tool body, the longitudinal motion platform is arranged in the machine tool body, both ends of the longitudinal motion platform are provided with longitudinal straight line guide rails, and the linear motor feeding device driving the rotary wheel device is arranged on one side of the longitudinal motion platform.
Owner:SOUTH CHINA UNIV OF TECH

Mobile phone cover glass main printing technology

The invention relates to the technical field of mobile phone cover glass printing, in particular to a mobile phone cover glass main printing technology. The mobile phone cover glass main printing technology comprises the steps of (1) primary mirror-like silver printing, wherein a mirror-like silver layer is printed on the lower surface of clear glass in a blade coating mode by means of the screen printing technique; (2) secondary bluish violet printing, wherein a second bluish violet layer is printed on the lower surface of the clear glass in a blade coating mode by means of the screen printing technique; (3) tertiary pearl white printing, wherein a pearl white layer is printed on the lower surface of the clear glass in a blade coating mode by means of the screen printing technique. According to the mobile phone cover glass main printing technology, by means of the composite printing technology conducted on the clear glass and combining the primary mirror-like silver printing, the secondary bluish violet printing and the tertiary pearl white printing, printed patterns are stereoscopic, and natural transition is achieved between different ink layers. The mobile phone cover glass main printing technology has the advantages that operation is simple and convenient to control, quality is stable, production efficiency is high, and large-scale industrial production can be achieved.
Owner:广东星弛光电科技有限公司
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