12results about How to "High opacity" patented technology

The invention belongs to the field of building surveying and mapping, and particularly discloses a building three-dimensional defect detection method, device and equipment based on multi-sensor fusion, and the method comprises the steps: obtaining data detected by a laser radar, an IMU, a wheel speed meter and image capturing equipment; fusing the data observed by the laser radar, the IMU and the wheel speedometer based on the ESKF, and determining the speed and the pose of the vehicle-mounted acquisition equipment; obtaining a three-dimensional point cloud model under a world coordinate system by combining the speed, the pose and the point cloud data observed by the laser radar; generating a corresponding three-dimensional Gaussian function according to the three-dimensional point cloud model, projecting the three-dimensional Gaussian function in a world coordinate system to a coordinate system of an image capturing device in combination with a pose, and performing microrasterization to obtain a preliminarily rendered image; and constructing a loss function in combination with a visual image observed by an image capturing device, optimizing the three-dimensional Gaussian function, and iterating to obtain a rendered three-dimensional visual model. According to the invention, fusion positioning and high-precision mapping of the building are realized in combination with multiple sensors.

The invention provides super-sensitive paper and a preparation method thereof. The preparation method comprises the following steps: making raw paper; wherein the raw paper comprises a surface layer, a surface lining layer, a core layer and a bottom layer which are sequentially stacked; each layer of paper pulp comprises a whitening agent and a dye; and coating the front and back surfaces of the raw paper for one time. The super-sensitive paper obtained by utilizing the preparation method of the super-sensitive paper has the characteristics of high opacity, low glossiness, high printing color saturation, strong paper texture feeling, good texture and the like, has unique visual and touch effects, has the characteristics of roughness, thickness and obvious texture in the aspect of touch feeling, and has the characteristics of good color and luster in the aspect of vision. The product is low in glossiness, can present unique color and grain effects after being printed, enables people to feel distinctive texture and quality value of printed matters, and can be applied to the fields of high-end brands, cover design, brochure, business cards and the like, and in addition, the preparation method also has the characteristics of simple process and low cost.

The present invention relates to a biodegradable polyester polymer with excellent transparency and impact strength and a biodegradable polymer composition comprising same. Particularly, the biodegradable polyester polymer is prepared from: a dicarboxylic compound including aromatic dicarboxylic acid or aromatic dialkylcarboxylate, and aliphatic dicarboxylic acid; an aliphatic glycol compound; and a polymerizable composition including a polypropylene sebacate oligomer, and thus can realize improved transparency and impact strength.

An object of the present invention is to provide an active energy ray-curable lithographic printing ink set that is excellent in superimposition of inks, and a method for producing a printed material using the same. The present invention is an active energy ray-curable printing ink set including at least one ink of black or chromatic color including at least any one of a black pigment, a cyan pigment, a magenta pigment, and a yellow pigment, and a white ink including a white pigment, wherein at least one of the ink of black or chromatic color is the black / chromatic ink (1) having a tack value of 5.0 or more and 12.0 or less at 400 rpm measured with an inkometer at 38°C, and the white ink has a tack value of 1.0 or more and 5.0 or less at 400 rpm measured with an inkometer at 38°C.

This invention relates to a method for desiliconizing green liquor in papermaking, belonging to the field of papermaking pulping chemical regeneration technology. This method aims to solve the technical problem in existing technologies where direct carbon dioxide is introduced into green liquor for desiliconization, resulting in the formation of colloids from the generated silicic acid, making subsequent solid-liquid separation difficult. The key points of the technical solution are: first, solid-liquid separation of the green liquor is performed to obtain a clear green liquor; then, white mud slurry is added to the clear liquor as seed crystals, and carbon dioxide gas is introduced to carry out a carbonization reaction, generating an easily separable silicon-containing suspension; next, solid-liquid separation is performed on the silicon-containing suspension to obtain a silicon-containing filter cake and a causticizing mother liquor; finally, calcium hydroxide is added to the causticizing mother liquor to carry out a causticizing reaction, obtaining white liquor and recyclable white mud slurry. This method is mainly applied to the desiliconization and purification of green liquor during the alkali recovery process in papermaking, and can utilize carbon dioxide in industrial flue gas to achieve carbon resource utilization; the separated silicon-containing filter cake can be further processed into activated calcium silicate products.

The utility model provides an anti-static shading adhesive tape, which relates to the technical field of adhesive tapes and comprises a plastic tube, an adhesive tape body is arranged on the plastic tube, a protective component is arranged in the plastic tube, the adhesive tape body comprises a base material layer, a conductive layer is arranged on the base material layer, a shading layer is arranged on the conductive layer, and an adhesive layer is arranged on the shading layer. An adhesive layer is arranged on the base material layer, a protective layer is arranged on the adhesive layer, the protective assembly comprises a first protective tube and a second protective tube, and the base material layer with a polyvinyl chloride material, the conductive layer with an antistatic agent material, the shading layer with carbon black and a metal oxide material, and the adhesive layer with acrylic acid, rubber and a hot melt adhesive material are arranged on the protective assembly. The protective layer with the low-density polyethylene film, the polypropylene film and the silicone oil material is compounded to form a complete adhesive tape structure, and the compounded adhesive tape is cut to obtain a product with a required size, so that the anti-static and shading effects of the adhesive tape are realized.

The application discloses light paper with high bulk and high opacity and a preparation method thereof. The light paper comprises wood pulp, fillers, auxiliaries and surface sizing agent; wherein the fillers are composite fillers prepared by compounding calcium carbonate and porous calcium silicate, and the porous calcium silicate has the following characteristics: bulk density < 0.1 g / cm 3 , sedimentation volume > 8.0 ml / g, and D90 mainly in the range of 35-40 microns. The application further provides a preparation method of the light paper with high bulk and high opacity. In the preparation method of the light paper, the calcium carbonate and the porous calcium silicate are used for composite filling. Compared with the light paper filled with only calcium carbonate, the bulk and the opacity of the light paper are significantly improved, and the light paper has the advantages of simple papermaking process and low cost.

The present invention relates to a LVT floor production process, which has the following process steps: step one, batching, mixing the following materials according to the proportion: PVC resin powder, stone powder, plasticizer, carbon black, stabilizer; step two, PVC online extrusion, putting the mixed materials into the extruder for extrusion, and then entering the mold for molding; step three, UV coating and annealing, using a roller to emboss the front of the molded floor, and using a UV lamp to cure, and then annealing; step four, coating, coating the back of the floor after UV embossing on the front with paint; step five, cutting, cutting the coated floor, deburring and packaging. The present invention has made innovations in the UV coating process through process adjustment testing. After UV on the front, a single coat of paint is used on the back to solve the problem of product size shrinkage and product warping at room temperature and high temperature up to 80°C. A large amount of equipment investment is saved, and product quality requirements are met with a simple and effective process solution.

An object of the present invention is to provide a method for producing a surface-printing printed material excellent in not only wet-on-wet printability but also density stability. The present invention is a method for producing a printed material, including, in the stated order: an ink (A) transfer step of transferring an ink (A) according to the following definition to a substrate, the ink (A) being colorless or white; a drying step of evaporating water or a solvent contained in the ink (A); an ink (B) transfer step of transferring an ink (B) according to the following definition to the substrate; and an irradiation step of irradiating the transferred inks with an active energy ray: the ink (A) being a volatile active energy ray-curable ink containing water or a solvent, the ink (B) being a nonvolatile active energy ray-curable ink substantially not containing water or a solvent.

The invention belongs to the technical field of glaze formula design, and provides an enamel wet process two-spraying and one-firing cover glaze material which is composed of the following compounds in percentage by mass: 29%-50% of SiO2, 10%-20% of B2O3, 3%-8% of Al2O3, 1%-5% of CaO, 15%-28% of TiO2, 1%-5% of P2O5, 8%-20% of Na2O, 3%-8% of K2O3, 0.5%-3% of MgO, 3%-8% of Na2SiF6 and 1%-4% of ZnO. The glaze formula has the advantages of being large in firing amplitude, stable in color, high in opalescence, high in whiteness, not prone to base penetration and black exposure, few in orange peel texture, smooth and fine in ceramic surface, excellent in texture and the like.

The invention provides a tetracycline tooth all-ceramic shade guide and a preparation method thereof, and relates to the technical field of tetracycline tooth ceramic repair. By using the opaque porcelain powder and a specific sintering process, a good opaque effect is ensured, and internal color spots of tetracycline teeth can be effectively covered. The specific dyeing porcelain powder coating thickness and the porcelain baking process are combined, the glossiness of the shade guide is improved, and the accuracy of color matching and the attractiveness of the restoration are ensured. Through a standardized preparation process, the quality and consistency of the colorimetric plate are ensured, the colorimetric plate shows high doctor and patient satisfaction in clinical application, the color matching degree is higher, the repairing effect is closer to that of natural teeth, and the actual requirements of patients can be better met.

This invention relates to the field of architectural ceramics technology, disclosing a titanium sphene crystal frit, its preparation method, and its application. The raw materials include kaolin, titanium dioxide, quartz, potassium feldspar, calcite, and wollastonite. By pre-firing the titanium sphene crystal frit using this formula, the titanium sphene crystals are pre-dissolved in the glass phase. During the subsequent glaze firing process at 1200℃, the titanium sphene crystals melt again and precipitate a second time, resulting in an opaque glaze layer. This secondary crystallization enhances the chemical stability of the titanium sphene crystal frit during subsequent glaze firing, leading to a more stable increase in the solar reflectance of the fired glaze. This solves the problem of unstable reflectivity in glazes when directly using titanium sphene powder or combining it with titanium dioxide and titanium frit to directly form titanium sphene crystals during glaze firing.