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124results about How to "Uniform transfer" patented technology

Production method of tipping base cigarette paper with high natural air permeability

The invention relates to a production method of tipping base paper with high natural air permeability as well as cigarette paper. The production method of the tipping base cigarette paper with the high natural air permeability comprises a pulping step, a papermaking step and a calendaring step; in the pulping step, softwood pulp, eucalyptus pulp and Spain straw pulp are respectively pulped, the softwood pulp has the pulping concentration of 3.4-3.6 percent, the beating degree/ wet weight of 66-680 SR/8-11g, the eucalyptus pulp has the pulping concentration of 3.6-3.8 percent and the beating degree of 20-220 SR, the Spain straw pulp has the beating degree of 18-220 SR; and 40-60 percent of softwood pulp, 30-40 percent of eucalyptus pulp and 10-20 percent of Spain straw pulp which are well-pulped are proportioned. The invention has higher air permeability and obvious action of diluting mainstream smoke, can greatly decrease the production cost and improve the production efficiency without static electricity or laser printing, the favorable combination strength can satisfy the requirement of a high-speed printer, the base paper is smooth and fine, has good oil print leveling effect and is fully suitable for the production requirement of a gravure printing machine.
Owner:MUDANJIANG HENGFENG PAPER CO LTD

Process for producing circuit board

Producing a circuit board, by laminating, on a substrate, an adhesive film with a metal film, which comprises a water-soluble polymer release layer, a metal film layer and a curable resin composition layer, which are formed in this order on a support layer, and has a release property enabling detachment of said water-soluble polymer release layer from the support layer after curing of the curable resin composition layer, such that the curable resin composition layer contacts the substrate; curing the curable resin composition layer; detaching the support layer, and removing the water-soluble polymer release layer present on the metal film layer by dissolving the release layer in an aqueous solution, efficiently forms an insulating layer and a metal film layer superior in adhesiveness to the insulating layer and in uniformity. By this method, a metal film layer having high adhesiveness and high property uniformity can be formed on the surface without the need for roughening the surface of an insulating layer with an oxidant such as alkaline potassium permanganate solution and the like. Thus, etching for circuit formation can be performed under milder conditions, which in turn provides a superior effect on micro wiring on circuit boards such as multi-layer printed wiring boards, flexible printed wiring boards, and the like.
Owner:AJINOMOTO CO INC

Topology of energy-fed three-port cascade converter of hexagonal structure and control method

The invention relates to the technical field of power electronic converters, in particular to topology of an energy-fed three-port cascade converter of hexagonal structure and a control method, The topology effectively combines a hexagonal converter with a traditional H-bridge cascaded multilevel converter driven by the existing medium and high voltage system motors, and then connects it with theAC power network through the multi-winding phase-shifting transformer, so that it can be extended to a three-port structure with single input and two outputs, which can meet the operating requirementsof the two-motor system under different operating conditions. As the front-end input is added to the module units on part of the bridge arm of the hexagonal converter, the number of power electronicdevices and the secondary side windings of the phase-shifting transformer required by the converter can be greatly reduced. At the same time, in order to solve the problem of system power imbalance caused by the default of front-end input of some units, the internal relationship between loop current and converter bridge arm power is further analyzed. Through a power balance method based on loop current control, the topology can realize stable operation and energy interaction.
Owner:WUHAN UNIV
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