51results about How to "Improve calendering effect" patented technology

The invention discloses a shoe lining production process, which comprises gray fabric weaving, singeing treatment, pre-rolling hot water treatment, rolling alkali and piling, washing treatment, oxygen bleaching, setting and finishing, powder scattering coating, pre-baking, baking, calendaring, performing final inspection and coiling, and packaging the finished product. The shoe lining has good handfeel, high stiffness, dimensional stability, low shrinkage rate and a lasting retention effect; and after the shoe lining is arranged for a long time, the stiffness is not reduced, and the shoe lining is high in thickness, high in adhesive firmness, good in a calendaring effect, long in service life and environment-friendly and is difficult to degum.

The invention relates to a method for a multi-roll calender and the multi-roll calender for calendering a fiber web. In the method, the fiber web, in particular a paper web or a paper board web, is calendered by the multi-roll calender comprising two sets of rolls; the two sets of rolls are provided with at least two calendering rolls; in the method, a calendered work area is maximized, namely, a loading system of the rolls and a loading system of the calender are designed into a running area for providing wide linear load kN / m x calendered area number. The multi-roll calender comprises the two sets of rolls comprising at least two calendering rolls, and is characterized in that a possible calendered work area obtaining the maximum width, namely, a loading system of a calendering device and the loading system of the calender can achieve the running area wide kN / m x calendered area number. Therefore, the calendering method and the calender suitable for quite diversified levels of various different papers can be obtained.

The invention provides a novel press-polishing machine which can effectively avoid invalidation of sealing equipment, comprising a frame and hard roller which can rotate and is arranged on the frame; wherein, the hard roller comprises a roller body, two shaft heads, a supporting tube and a heating device, the roller body is of a prismatical hollow structure, the two shaft heads are respectively fixedly arranged at the two ends of a roller body along the axial direction, at least one sealing equipment is arranged between the shaft heads and the roller body, at least two fixed trays are arranged in the roller body along axial direction at intervals, the supporting tube penetrates through the radial central part of the fixed trays, the heating device is arranged in the supporting tube, an input end of the heating device is electrically connected with an external power source by a revolving connector, the sealing equipment comprises an internal tray, a ring-shaped copper tube and an external tray along the axial direction of the roller body, the lateral wall of the ring-shaped copper tube is respectively connected with the adjacent external side of an internal tray and internal side of the external tray and are combined into a whole, the other side of the internal tray and the other side of the external tray are respectively connected with the shaft head and the roller body and are combined into a whole.

The invention provides a controllable crown roll and belongs to the technical field of papermaking equipment. The controllable crown roll is characterized in that a containing groove (8) is formed in the side face of a mandrel (1), an oil inlet hole (10) communicated with a static-pressure bearing piston (2) and a transition hole (13) communicated with the end face of the mandrel (1) are formed in the containing groove (8), and an oil pipe (12) communicated with the transition hole (13) and the oil inlet hole (10) is arranged in the containing groove (8). The containing groove is formed in the side face of the mandrel of the controllable crown roll, the oil pipe is installed in the containing groove, hydraulic oil is conveyed to the static-pressure bearing piston through the oil inlet hole and the transition hole in the containing groove, an axial through hole does not need to be machined in the middle of the mandrel during machining, and machining difficulty is greatly reduced. Besides, installation is convenient, the sealing requirement is low, maintenance is hardly needed, people only need to replace the damaged oil pipe or a sealing element, and maintenance difficulty is greatly reduced.

The SBS water emulsion is prepared with SBSM 20-60 wt%, non-ionic emulsifier 0.2-0.5 wt%, ionic emulsifier 0.5-1.0 wt%, electrolyte 0.2-0.4 wt% and defoaming agent 0.1-0.3 except water. The preparation process includes dissolving polarized SBS (SBSM) in organic solvent; adding water solution of emulsifier, defoaming agent and electrolyte slowly under stirring of 3000-5000 rpm to obtain O / W type emulsion; stirring in raised rotation speed of 8000-10000 rpm to crush the particles to under 1 micron; heating and decompressing to eliminate solvent via pumping to obtain stable SBS water emulsion. The SBS water emulsion has small particle size, high stability, solidified matter content of 1-4 %, good compatibility with stuffing and has high stuffing capacity.

An apparatus for smoothing and cooling of slit nozzle synthetic web passes the web following the smoothing gap between two rollers along a cooled surface and into contact with cold air introduced by cold air chamber open toward the roller surface.