1262results about How to "Reduce the presence of air bubbles" patented technology

Described here are methods, devices, and kits for microjet drug delivery. The devices described here may be modular or non-modular. The modular devices typically include a first module having a drug reservoir and a nozzle in fluid communication with the drug reservoir and a second module having an actuator and a power supply. The power supply provides power to the actuator and when the first and second modules are coupled, the actuator is capable of acting on a dispensing member causing it to dispense a drug in liquid form from the drug reservoir via the nozzle at a velocity sufficient to penetrate skin. Other devices described include a nozzle, a reservoir in fluid communication with the nozzle, a dispensing member, and an actuator. In these devices, the nozzle has at least one feature that enhances nozzle contact with the skin in order to reduce lateral drug leakage about the nozzle.

A method of producing flat glass in which foam which appears on the surface of molten glass melted using oxy-fuel burners is dispersed by directing a diffuse, luminescent flame onto the surface of the glass carrying the foam.

A bio-based artificial quartz stone and a production process thereof are disclosed. The bio-based artificial quartz stone includes the following components by weight: 0-80% of quartz sand; 10-70% of quartz powder; 3-20% of curable resin; 0.05-3% of a curing agent; 0.01-40% of lignin; 0-5% of a crosslinking agent; 0.05-5% of a coupling agent; 0-1% of a promoter; 0-2% of a pigment; and 0-3% of a defoaming agent. According to the invention, the lignin is used in the artificial quartz, the environmental pollution of the lignin is reduced, the cost of the artificial quartz is reduced, and at the same time the weather resistance and light stability of the artificial quartz are improved, thus the artificial quartz has antibacterial ability, is green and environmental-friendly, and is suitable for using in building decoration of living environments.

The invention discloses a resin plug-hole apparatus of a PCB back borehole and a method thereof. The apparatus comprises a PCB plate, a silkscreen net plate and an aluminum sheet. The PCB plate is drilled with a step through hole. One end of the step through hole is a back borehole with a large bore diameter, and the other end is a through hole with a small bore diameter. The silkscreen net plate is above one surface with the back borehole of the PCB back borehole and is provided with the aluminum sheet. According to the invention, the surface with the back borehole of the PCB plate is selected to be subjected to resin ink filling, resin ink flows through a larger hole and fills the step through hole, through controlling pressure, speed and times of scrapping, the step through hole is filled up by the resin ink, then the PCB plate is baked through a gradual temperature rise method, the resin ink in the hole is solidified, a volatile ingredient of the resin ink is discharged, a purpose of reducing bubbles in the step through hole is reached, and the reliability of a circuit board is raised.

A method of making an aqueous ozone solution for an industrial cleaning system is described. The method includes providing a reaction vessel for entraining ozone gas in an aqueous solution. The reaction vessel includes a conical-shaped surface having a two or more edges or ridges. The conical-shaped surface defines an interior, and two or more edges or ridges are in contact with the interior. The reaction vessel is in fluidic communication with a supply of water. The reaction vessel is in fluidic communication with a supply of a first aqueous ozone solution. The first aqueous ozone solution is directed to the conical-shaped surface. Water is directed to the conical-shaped surface, and the water and the first aqueous ozone solution are mixed to form a second aqueous ozone solution.

Compositions for aqueous ozone solutions are also described. The aqueous ozone solution contains approximately 1 part by volume water mixed with approximately 4 parts by volume to approximately 9 parts by volume of a first aqueous ozone solution to form a second aqueous ozone solution that has an oxidation reaction potential of up to approximately 2.6. The second aqueous ozone solution has an ozone concentration of up to approximately 20 ppm.

A primary flow path forming member is provided with a groove which becomes a recording liquid supply path on a bottom surface thereof. A second flow path forming member is provided with an arm portion having a small width and a large length. The arm portion of the second flow path forming member is used as a cap for closing the opening of the groove which becomes the liquid supply path formed on the bottom surface of the prime flow path forming member. The primary flow path forming member and the second flow path forming member as described above are formed by injection-molding and bonded with each other by a bonding member. The bonding member is formed to cover the periphery of a portion where the opening edge of the groove which becomes the recording liquid supply path, in the primary flow path forming member abuts on the arm portion of the second flow path forming member.

The invention discloses a method for producing a urea-based compound fertilizer by high tower granulation. The method comprises the following steps of: (1) adding a fluxing agent and urea into a melting tank, melting the urea at low temperature, and adding into a mixing reaction tank on the top of a tower; (2) adding other raw materials into the melted urea solution in the mixing reaction tank on the top of the tower, and mixing and stirring to obtain mixed and melted slurry; and (3) spraying the mixed and melted slurry by using a granulation nozzle in the high tower, and granulating in the tower. The method has the advantages that operating temperature and energy consumption are low, the liquidity of the slurry is high, a few bubbles exist in the mixed slurry, a small amount of biuret is generated, the operating environment is good, and the like; and high tower granulation production can be stably, normally and continuously performed.

The invention relates to a soft magnetic core used for a high-power inverter power supply, and a manufacturing method thereof. The magnetic core is made of an Fe-based amorphous nano-crystalline belt material through winding , and comprises components according to weight percentages as follows: 81%-85% of Fe, 0.01%-5% of Co, 7%-9% of Si, 1.5%-2.5% of B, 1%-2% of Cu, 4%-7% of M, and 0.001%-0.04% of M', wherein M is one or more of Nb, Mo, V, W and Ta, and M' is at least one of Al and Ti. The magnetic core is subjected to anneal in a protective atmosphere or a vacuum; when in anneal, the position of the magnetic core in a furnace is movable or rotatable, a holding temperature is 520-600 DEG C, the holding time is 1-2 hours, and a temperature rise speed is 100 DEG C per hour. The magnetic core manufactured by adopting the method has lower loss, better manufacturing technique properties, and good soft magnetic characteristics; moreover, the downstream processing after the heat treatment is applicable to various technique methods.

The invention discloses an FFC glaze with high stain resistance, an FFC sanitary ceramic and a preparation method of the FFC sanitary ceramic. The FFC glaze with high stain resistance comprises the following raw materials in parts by weight: 22-29 parts of quartz, 24-28 parts of potassium feldspar, 6-10 parts of wollastonite, 7-8 parts of zirconium silicate, 5-10 parts of kaolin, 0-5 parts of calcite, 5-7 parts of zinc oxide, 5-7 parts of aluminum oxide, 2-3 parts of frit, 4-8 parts of dolomite, 5-8 parts of calcined talc, 1-4 parts of barium carbonate and 0.2-0.5 part of sodium carboxymethylcellulose. According to the FFC glaze with high stain resistance, multi-alkali effect is utilized, barium carbonate is introduced, the use amount of calcined talc is increased, and the use amount of albite is reduced, so venting of a green body is more smooth, the porosity of a glaze surface is reduced, and microcracks of the glaze surface are reduced. Besides, the FFC glaze with high stain resistance also utilizes the principle of like dissolves like to increase the consumption of aluminum oxide and quartz, improve the bonding property of the blank and a glaze, and further reduce the microcracks on the glaze surface of the sanitary ceramic correspondingly.

The invention discloses a method for preparing a polished crystal tile, comprising the following steps of: accumulating a mixture of low-temperature clinkers and high-temperature clinkers on a printed tile surface baked at high temperature; baking; and polishing. The polished crystal tile prepared with the preparation process has high high-temperature viscosity and stable glass network structure, the baked clinker has certain height and has stereoscopic impression and artistic feeling. The action of the skeleton of the high-temperature clinker is favorable to the discharge of bubbles, and the obtained enamel layer has few bubbles, high transparency and high enamel quality. By regulating the proportion of the low-temperature clinkers and the high-temperature clinkers, the preparation method is suitable for different baking temperatures, is convenient and flexible and is suitable for different products.

The invention belongs to the technical field of concrete additives, in particular relates to a water reducing agent, and more particularly a composite polycarboxylic acid water reducing agent. The composite polycarboxylic acid water reducing agent is characterized by being prepared from the following components in percentage by mass: 8-28.6 percent of polycarboxylic acid high-performance water reducing agent, 0.5-7.36 percent of inhibiting agent, 0.001-0.15 percent of functional aid, 0.01-0.65 percent of preservative and the balance of water, wherein the total mass percentage of the components is 100 percent. The composite polycarboxylic acid water reducing agent is applied to freshly mixed concrete. After a template coated with waste engine oil or rosinate soap is dismantled, the surface of hardened concrete is smooth, air bubbles are reduced remarkably, and the construction requirement is fully met. By adopting the composite polycarboxylic acid water reducing agent, the problem of a large quantity of air bubbles on the surface of concrete, produced after the use of demolding agents such as waste engine oil or rosinate soap and the like is solved.

Disclosed is a flip-chip bonding method to reduce voids in underfill material. A substrate with connecting pads is provided. At least a chip with a plurality of bumps is bonded on the substrate and then an underfill material is formed between the chip and the substrate. Finally, the substrate is placed in a pressure oven in which a positive pressure greater than one atm is provided, meanwhile, the underfill material is thermally cured with exerted pressures to reduce bubbles or voids trapped inside the underfill material to avoid popcorn issues due to CTE mismatch between the chip and the substrate. In one embodiment, another underfill material is further formed between a plurality of chips and bubbles or voids trapped between the chips are also reduced by the pressurized curing.

The invention relates to a food processing method of a motor under-set-type food processing machine and the food processing machine, and belongs to the field of food processing. The food processing method at least comprises a heating stage, a first cooking stage and a wall-breaking and grinding stage, wherein in the heating stage, food in a stirring cup is heated to be boiling by virtue of a heating device; in the first cooking stage, the food in the stirring cup is cooked for a duration of t1 by virtue of the heating device until the food is completely cooked, and during cooking, a grinding cutter is driven to do intermittent rotation at a first rotating speed by virtue of a motor; and in the wall-breaking and grinding stage, the grinding cutter is driven to rotate at a second rotating speed by virtue of the motor so as to grind the cooked food in the stirring cup, and the second rotating speed, which ranges from 20000r/min to 40000r/min, is greater than the first rotating speed, wherein the power of the heating device in the first cooking stage is less than that in the heating stage. The food processing machine using the food processing method provided by the invention can uniformly heat the food, and the phenomenon of over-burnt bottom and spillover cannot occur easily.

In a liquid jetting head unit, a tank case in a head tank includes a first connection path connecting a downstream chamber of the tank case and a discharge path, and a second connection path connecting an upstream chamber of the tank case and the discharge path. The discharge path includes a filter member provided between a first part of the discharge path connected to the first connection path and a second part of the discharge path connected to the second connection path.

The invention discloses a novel nano-crystalline cellulose modified lithium ion battery diaphragm and a preparation method thereof, and aiming to provide a novel nano-crystalline cellulose modified lithium ion battery diaphragm which has relatively high hydrophily, liquid absorption rate, liquid retention rate, mechanical property and environmental friendliness and a preparation method thereof. The novel nano-crystalline cellulose modified lithium ion battery diaphragm comprises cellulose nanofiber-lithium and a polymer substrate and is prepared according to the steps of film scraping liquid configuration, defoaming, film scarping and coagulating bath. The cellulose nanofiber-lithium improved lithium ion battery diaphragm prepared according to the method is favorably maintained with a natural cellulose I crystal structure, a composite membrane is endowed with relatively high mechanical performance, and the hydrophily and the stability of the composite membrane are improved; and the method has the advantages of very high industrial production capability and wide application prospect.

The invention relates to a bottom pouring type vacuum perfusion process. A flow guidance screen is placed below a glass fiber cloth pavement layer, and resin is perfused upwards from the surface of a die so that air bubbles in the resin are led out directly. The resin saturates glass fibers from bottom to top. In order to eliminate micro air bubbles in the resin, a layer of VAP film is paved on the surfaces of the glass fibers. A layer of ventilating felt is paved on the VAP film as a transmission medium of a gas to evenly distribute vacuum, and the ventilating felt is connected with a vacuum pipe, and the vacuum of a whole perfusion system is evenly distributed, but the resin cannot be leaked out. The air bubbles in the resin are greatly reduced so that the compaction rate of a product is improved. The upper surface of the product is an adhesive surface without air bubbles, so the upper surface can be adhered to other parts of a blade very well. The bottom pouring type vacuum perfusion process improves the reliability of the process and is convenient for field control, the most significant characteristic of the resin flow is that the resin flows from the die to a non-die surface of the product, and the bottom pouring type vacuum perfusion process is different from the conventional top pouring type process.

The invention relates to a calcium-aluminium borosilicate glass with high modulus of elasticity and is prepared and manufactured according to percentage by weight of the following raw materials: 55-63.5SiO2, 8-10.5B2O3, 15-21Al2O3, 0-3.5MgO, 4-10CaO, 0-5SrO, 1-5.5BaO, 0.001-4Y2O3, 0-2.5La2O3, 0-0.5ZnO, 0-0.3ZrO2, 0.005-0.08R2O(R=Li, Na, K). The invention has the advantages of high strain point, low coefficient of expansion, high modulus of elasticity and nonalkali basically; and is fit for a flat panel display, particularly for manufacture of TFT-LCD glass substrate.

A method of making an aqueous ozone solution for an industrial cleaning system is described. The method includes providing a reaction vessel for entraining ozone gas in an aqueous solution. The reaction vessel includes a conical-shaped surface having a two or more edges or ridges. The conical-shaped surface defines an interior, and two or more edges or ridges are in contact with the interior. The reaction vessel is in fluidic communication with a supply of water. The reaction vessel is in fluidic communication with a supply of a first aqueous ozone solution. The first aqueous ozone solution is directed to the conical-shaped surface. Water is directed to the conical-shaped surface, and the water and the first aqueous ozone solution are mixed to form a second aqueous ozone solution.

Compositions for aqueous ozone solutions are also described. The aqueous ozone solution contains approximately 1 part by volume water mixed with approximately 4 parts by volume to approximately 9 parts by volume of a first aqueous ozone solution to form a second aqueous ozone solution that has an oxidation reaction potential of up to approximately 2.6. The second aqueous ozone solution has an ozone concentration of up to approximately 20 ppm.

The invention relates to a dissolvent-free polyurethane weather-proof anticorrosive coating for a storage tank. The coating is composed of a component A and a component B, wherein the component A comprises the following components by weight percentage: 20-60 percent of hydroxide radical, 0.3-1.0 percent of dispersant, 0.5-2.0 percent of antifoamer, 0.2-0.6 percent of leveling agent, 2.0-5.0 percent of dehydrator, 0.5-1.0 percent of anti-settling agent, 0.1-1.0 percent of curing accelerator, 1.0-3.0 percent of ultraviolet absorbefacient, 0.5-2.0 percent of photostabilizer, 0.2-1.0 percent of antioxidant, 5.0-20 percent of aluminum dihydrogen tripolyphosphate, 10-25 percent of titanium dioxide, 10-20 percent of barium sulfate and 4.0-6.0 percent of zeolite power, wherein the component hydroxide radical is polyester polyether polylol obtained by chemically modifying castor oil; the component B is a hexamethylene diisocyanate curing agent; the weight ratio of the component A to the component B is 100:25-100:50. Via the selection of the terminal hydroxyl compound and the curing agent in the component A, bubbles in the anticorrosive coating are reduced. The coating has good anticorrosive performance, and besides, the super-high performance of UV aging resistance and salt and fog resistance is suitable for the outer wall construction of the storage tank.

A pressure-sensitive adhesive sheet has a substrate and a pressure-sensitive adhesive layer laminated on at least one side of the substrate. The sheet is configured such that: pressure-sensitive adhesive force N1, occurring after the pressure-sensitive adhesive layer is attached to a stainless steel plate (430 BA plate) and is left at 23° C. for 10 seconds, is 1.0 [N/20 mm] or less; pressure-sensitive adhesive force N2, occurring after the pressure-sensitive adhesive layer is attached and is aged at 80° C. for 5 minutes, is 3.0 [N/20 mm] or more; and N2/N1 is 5.0 or more.

The invention relates to the field of semiconductor light-emitting devices, in particular to a manufacturing method for a display screen and the display screen. Adhesive material units which are distributed at intervals are adopted and then attached in a staggered mode, appropriate adhesive materials are selected during early-stage setting, the interval between every two vertical adjacent rubber material units is regulated so that different attaching structures can be obtained, bubbles in attachment space formed after attachment are reduced, the buckling stress can be reduced so that flexible folding display can be better facilitated, adverse effects of the shrinkage effect of the adhesive materials on display devices are effectively eliminated, and the product yield is improved.

The invention discloses silver conductor slurry for back electrodes of a solar energy battery. The slurry is composed of, by weight, 50% to 65% of silver powder, 10% to 30% of glass powder, and 20% to 40% of organic carriers, wherein the glass powder is composed of, by weight, 50% to 70% of Bi2O3, 5% to 20% of SiO2, 5% to 10% of ZnO, 5% to 10% of TiO2, 5% to 15% of B2O3, and 1% to 5% of Al2O3. According to the silver conductor slurry for back electrodes of the solar energy battery, metal-oxide frits without lead oxide are used as binders so that the slurry is environment-friendly and is good for import and export; spherical silver powders with high tap density and bright silver powders with high conductivity are collocated according to a certain proportion, a compact network with excellent conductivity is formed after sintering and each of the back electrodes has an attractive appearance; the surface active agent and/ or antifoaming agent in the organic carrier can reduce foams in the silver slurry so that the printed pattern is compact, foam-free and airhole-free.

The invention belongs to the technical field of rubber tires and chemical manufacturing, and relates to a rubber composition specially suitable for producing a semi-steel radial tire inner liner and a preparing method thereof. The rubber composition is prepared from, by weight, 30-40 parts of natural rubber, 60-70 parts of brominated butyl rubber, 60-70 parts of carbon black, 30-40 parts of reinforcing powder, 10-12 parts of environment-friendly aromatic oil, 4-6 parts of an active agent, 2-4 parts of tackifier resin, 2-4 parts of a dispersing agent, 0.2-0.5 part of magnesium oxide, 1-2 parts of a promoting agent and 1-1.8 parts of sulfur. As two-section rubber mixing is adopted, energy consumption is saved, and transportation and transferring of the production link are reduced; the flowing performance of rubber is improved in the pressing technology process, and particularly, air bubbles of a pressing part are obviously reduced, and the once pass percent of a product is improved; the low preparing cost and the high processability are achieved while the rubber composition for producing the semi-steel radial tire inner liner can meet the requirement for the high breathability resistance of the rubber.