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1380results about How to "Improve thickness uniformity" patented technology

Compositions for compounding, extrusion and melt processing of foamable and cellular fluoropolymers

The disclosure provides a composition or set of compositions and methods for producing cellular foamable, foamed, or blown perfluoropolymers or fluoropolymers and other thermoplastics to create products including a lower cost communications cable, conductor separator, conductor support-separator, jacketing, tape, wire insulation and in some cases a conduit tube as individual components or combined configurations that exhibit improved electrical, flammability and optical properties. The composition of the invention can be is chemically foamable yielding homogeneous foamed insulating structures which excel simultaneously in providing excellent insulating properties on metal wires or optical fibers, outstanding processing parameters for high speed cable manufacture and high performance ratings on flammability, smoke generation and fuel load. Specifically, the foamable perfluoropolymer cellular insulation composition comprises blending or individually utilizing; a selected perfluoropolymer in combination with magnesium carbonate, calcium carbonate and Aclyn® wax; a second composition comprising the first composition and an additional selected one or more perfluoropolymers; a third composition comprising; talc and the selected one or more perfluoropolymers; a fourth composition comprising; the second composition, the third composition and the selected one or more perfluoropolymers. A single compounded pellet or product resulting in cellular foams obtained from melt processing the pellets has also been realized by providing the melt combination of only talc and a perfluoropolymer. The present invention includes a foamable perfluoropolymer composition comprising at least one melt-processible per(halo)fluoropolymer; and a blowing agent comprising an effective amount of magnesium carbonate; and
  • an active nucleating agent chosen among:
  • at least one metal carbonate different from magnesium carbonate having decomposition temperature exceeding 350° C., generally chosen among CaCO3, BaCO3, ZnCO3 and PbCO3; and talc and mixtures thereof.
Owner:CABLE COMPONENTS GROUP

Method for designing coating uniformity correction mask for spherical optical elements on planetary rotating jigs of vacuum coating machines

The invention discloses a method for designing a coating uniformity correction mask for spherical optical elements on planetary rotating jigs of vacuum coating machines, which is used for studying the film thickness distribution of a plane or spherical optical element (subjected to coating) on a planetary rotating jig through establishing a coating model in a vacuum environment. Through enabling an optical element coating process in a planetary rotating jig to be equivalent to a coating process in a simple rotating jig, the initial shape of the coating uniformity correction mask in the planetary rotating jig is designed. Through optimizing the arc length magnification factor of the correction mask by using a computer until the film thickness uniformity reaches the optimal result, the actual shape of the coating uniformity correction mask for the spherical optical elements is obtained. According to the invention, the control on the film thickness uniformity of the spherical optical element with a large caliber and a large caliber / curvature radius ratio can be realized, thereby obtaining the uniformity of multilayer-film spectral characteristics of the spherical optical element with a large caliber and a large caliber / curvature radius ratio.
Owner:INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI

OLED display panel and a method for manufacturing same, and OLED display device

The present invention provides an OLED display panel and a method for manufacturing the same, and an OLED display device. A concave-convex structure is arranged at one side, far away from a substrate,on a planarization layer, after an organic light-emitting functional layer and an inorganic first package layer are formed on the planarization layer, positions of the organic light-emitting functional layer and the first package layer corresponding to the concave-convex structure are non-flat surfaces, namely concave-convex structures with the same shapes are formed at the positions, corresponding to the concave-convex structure, on the organic light-emitting functional layer and the first package layer; when an organic second package layer is formed, the non-flat surface of the first package layer can block the flow of the second package layer to a certain extent to reduce the liquidity of the second package layer, reduce the climbing distance of the edge of the second package layer andincrease the edge stress and an angle of gradient so as to achieve the product narrow-frame design, improve the thickness uniformity of the edges of the second package layer, avoid bad mura of a non-display area and ensure the package effect.
Owner:BOE TECH GRP CO LTD +1
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