123 results about "Liquid penetration" patented technology

A device (10) and method for tranporting fluids across biological barriers enhances penetration of a biological barrier by the use of directional insertion, preferably with asymmetric microneedles (18) and/or microneedles (18) with sharp edges. Additionally, or alternatively, adhesion followed by alteration of contact geometry is employed to stretch the biological barrier across the microneedles (18), thereby also enhancing penetration. Also disclosed is a device (10) and method which combine shallow penetration by hollow microneedles (18) with jet injection via the microneedles (18) to achieve a total liquid penetration depth greater than the mechanical penetration depth of the microneedles (18).

The invention provides a low density paperboard material for use in producing an insulated container, and is especially well-suited for making cups. The paperboard material comprises a paperboard web including wood fibers and expanded microspheres, and has a relatively low density ranging from about 6 to about 10 lb/3MSF/mil, a relatively high caliper ranging from about 24 to about 35 mil, and an internal bond strength of at least about 80×10⁻³ ft-lb_f preferably at least 100×10⁻³ ft-lb_f. For applications such as cups the material is also coated on one or both sides with a barrier coating, preferably low density polyethylene, to limit liquid penetration into the web. The low density paperboard material of the invention is convertible for manufacture of containers, particularly cups, and the surface of the low density board may have a Sheffield smoothness of 300 SU or greater.

This invention relates to a liquid penetration-resistant water-vapor-permeable multi-layer composite material and process for making the same comprising a porous nanofiber web of polymeric fibers, wherein the polymeric fibers of the nanofiber web have a diameter of less than 1000 nanometers and wherein the nanofiber web has a basis weight of 5 to 40 grams per square meter and a surface roughness (ΔRMS) of 5 to 15 micrometers and where, the porous nanofiber web is coated on a surface with a layer of water-vapor-permeable, hydrophilic, monolithic, water transport material.

A durable membrane that includes a membrane that is moisture vapor transmissive and resistant to liquid penetration, and a non-continuous application of a thermoplastic elastomer on a side of the membrane. The membrane may be an expanded polytetrafluoroethylene membrane. The thermoplastic elastomer may be polyurethane. The non-continuous application of thermoplastic elastomer on a side of the membrane may include an application of thermoplastic elastomer that covers a portion of the surface area of the membrane and leaves the remainder uncovered.

A method and apparatus for forming mono-sized-dispersed spherical particles from a conductive liquid utilizes inductive coupling to cause a pressure oscillation in a plenum feeding a jet-forming nozzle. The inductive coupling is provided by a transformer where one loop is the conductive liquid. The invention also features a device with single or multiple orifice nozzle plates reliably manufactured using etching techniques. The invention also features methods for protecting jet-forming orifices from destruction attack by a corrosive liquid. The invention also features means to create simultaneously, tailored mixtures of mono-size-dispersed powder sizes. The invention also features a system and method for “pre-wetting” fine pores and orifices and for encouraging liquid penetration of the fine pores and filter without recourse to very high differential pressure.

A system for impeding air or liquid penetration through an entry into the interior of a structure includes a door mounted to a door frame. The door frame includes at least one integral cavity. The system also includes a dual-sealing system between the door and the door frame. The dual-sealing system includes an inner seal and an outer seal. A drainage cavity is defined by a region bounded by the inner seal, the outer seal, the door, and the door frame. A gap is formed in the outer seal that permits equalization of pressure of the cavity with external atmospheric pressure.

The invention discloses an organic garbage treatment box, which comprises a box body, wherein an inner cavity of the box body is partitioned by a partition layer arranged in the middle of the box body through a drawable support; the partition layer and the box body positioned above the partition layer encircle a compost fermentation bin; a material inlet and a gas exhaust port are formed on the upper part of the compost fermentation bin; the partition layer comprises a partition plate which is used for bearing solid garbage for composting and provided with a plurality of liquid penetration holes and a collection tank for collecting waste liquid falling from the liquid penetration holes in the partition plate; an inclined structure which is inclined towards one end of the collection tank to concentratively discharge the waste liquid is arranged at the bottom of the collection tank; and an earthworm breeding bin which is provided with an opening on the top and used for accommodating composts falling from the compost fermentation bin after the partition layer is taken out from the box body and breading earthworms is arranged below the partition layer in the box body. The organic garbage treatment box is easy to operate, occupies a small area, has high garbage treatment efficiency, and is suitable for individual farmer families.

The invention relates to a flow guiding agent used for a three-step refining and a preparation method thereof. The flow guiding agent mainly consists of the components with the following weight percentages: 23 to 35 percent of Cr2O3, 13 to 45 percent of SiO2 and 3 to 15 percent of Zr2O3. The forming of the granularity of the flow guiding agent is reasonable and the flowing capability is good; the refractory degree is not less than 1780 DEG C and agglomeration can be resisted; the capability of steel liquid penetration resisting is strong and the specific gravity is high; a proper thickness of an agglomeration layer can be formed and the self-opening rate of a steel bundle can be effectively enhanced; the component composing is reasonable and impurities brought into a casting-start process can be avoided. The invention is suitable for the manufacturing of high clean steels.

The invention discloses a hygienic product which comprises a surface layer provided with mutually combined ends and used for liquid penetration, a bottom layer for preventing liquid penetration, an absorption main body arranged between the surface layer and the bottom layer and a composite chip which is made from fiber added with molecular assembly antibacterial master batch, far infrared substances and magnetic substances. The hygienic product has good effects of sterilization, odor elimination and pain relief.

The invention provides a pesticide synergist and thereof in a herbicidal composition, a insecticidal composition and a bactericidal composition. The pesticide synergist is citrus essential oil. The citrus essential oil contains grapefruit essential oil and orange peel essential oil. A pesticide composition is any one or more of the herbicidal composition, insecticidal composition and bactericidalcomposition. The pesticide composition of the invention is enhanced in spreadability on a leaf, overcomes pesticide liquid slip loss caused by hydrophobicity of a waxy layer of the leaf, reduces driftof pesticide liquid, and can carry the pesticide to rapidly penetrate a stratum corneum of the leaf so as to make full use of the effect of the pesticide. The citrus essential oil of the invention contains the orange peel essential oil and grapefruit essential oil at an appropriate proportion and has good pesticide liquid penetration effect. In a preparation method of the pesticide composition provided by the invention, the citrus essential oil and the pesticide components are separately formulated into mother liquid and then mixed, which facilitates the uniform dispersion of the components in the system and helps to improve the effect of the pesticide.

The invention discloses a sand penetration-preventing alcohol-based foundry coating for resin-bonded sand molds and a preparation method thereof. The sand penetration-preventing alcohol-based foundry coating is composed of the following components: 7.3-48.8% of mixed-meshes chrome corundum, 8.1-38.9% of 200-mesh chrome corundum, 7.7-22.5% of 325-mesh chrome corundum, 7.5-29.1% of 325-mesh white corundum, 0.72-1.5% of sepiolite, 1.5-3% of sodium-based bentonite, 0.3-0.5% of polyvinyl butyral, 0.36-0.97% of phenolic resin, 0.72-1.62% of 325-mesh limestone flour, 0.36-0.75% of water and 12.1-21.8% of ethanol. The foundry coating provided by the invention contains no zircon power and has obvious price advantage in contrast with the zircon power; the foundry coating is wide in raw material resource and high in cost performance. The coating provided by the invention is very good in suspension property, high in coating compactness, excellent in breathability and strong in steel liquid penetration resistance.

The invention relates to the technical field of bifurcated pipe manufacturing, in particular to a process of integrally shaping a U-shaped bifurcated pipe. The invention is characterized by adopting the following steps of: (1) intermediate frequency heating: adopting an intermediate frequency heating furnace to heat blanked material to 850 to 1200 DEG C; (2) first-time integrally shaping: adopting a Y-shaped forging mould to forge the material heated by the intermediate frequency furnace to a Y-shaped rod; (3) shaping by inner-hole drilling and milling: adopting a drilling device to drill a Y-shaped inner channel in the Y-shaped rod; and (4) shaping by bending: bending the V-shaped head of the Y-shaped rod to U-shape so as to obtain the U-shaped bifurcated pipe. Compared with the prior art, the process adopts technologies of die forging and extrusion to realize the integral shaping of U-shaped bifurcated pipe through die forging and extrusion. The pressure-resistance of the U-shaped bifurcated pipe manufactured by the process provided by the invention is greatly higher than that of U-shaped bifurcated pipe processed by welding and is not apt to crack; the manufacturing cost is just equal to 50 to 60 percent of that of the welding process; and the trouble of liquid penetration can be avoided due to no welding line.

A method of treating a membrane comprises the steps of providing a membrane with surfaces that define a plurality of pores extending through the membrane. Providing a dispersion of oleophobic fluoropolymer solids. Stabilizing the dispersion with a stabilizing agent. Diluting the dispersion with a wetting agent. Wetting surfaces which define the pores in the membrane with the diluted and stabilized dispersion. Removing the wetting agent and the stabilizing agent from the membrane. Coalescing the oleophobic fluoropolymer solids of the dispersion on surfaces that define pores in the membrane. A composite membrane comprises a porous membrane having a plurality of interconnecting pores extending through the membrane and made from a material which tends to absorb oils and certain contaminating surfactants. A coating is disposed on surfaces of the nodes and fibrils defining the interconnecting passages in the membrane. The coating comprises oleophobic fluoropolymer solids coalesced on surfaces of the nodes and fibrils to provide oil and surfactant resistance to the composite membrane without completely blocking pores in the membrane. The composite membrane is gas permeable, liquid penetration resistant and capable of moisture vapor transmission at a rate of at least 70,000 gr/m<2>day.

The invention relates to a technology for repairing a big-caliber concrete pipeline lining by utilizing thin wall stainless steel. The repair technology comprises the following steps: (1) pretreating in the earlier stage; (2) rolling and transporting the thin wall stainless steel; (3) positioning, internally supporting and spot-welding the stainless steel lining; (4) welding a stainless steel lining pipe; (5) conducting liquid penetration testing on the weld joint of the stainless steel lining pipe; (6) pickling and inactivating the weld joint; (7) rounding off in the later period. The technology for repairing the big-caliber concrete pipeline lining by utilizing thin wall stainless steel provided by the invention adopts the thin wall stainless steel to repair the big-caliber concrete pipeline (the diameter of the pipeline is larger than DN2000); compared with the other pipeline repair schemes, the anticorrosion property of the repaired pipeline is greatly increased, the service life of the pipeline can be prolonged by more than 30 years; for repair of the water supply pipeline, the technology can achieve higher water quality and weight of water supply than other schemes; compared with the pipeline laying again, the cost is greatly lowered, and the construction cycle is shortened.

The invention provides a sandwich structure paper diaper flow guiding layer material and a preparation method thereof. The sandwich structure paper diaper flow guiding layer material is characterizedby comprising three layers of sheets, the three layers of sheets are all non-woven fabrics manufactured by adopting chemical fiber through the hot-blast air penetration bonding non-woven technology, and the three layers of sheets are stacked and bonded from top to bottom to form the sandwich structure; the upper-layer sheet is a longitudinal orienteering fiber net; the middle-layer sheet is a longitudinal orienteering fiber net, and the cross section is in a wavy shape or a sawtooth shape; the lower-layer sheet is a disordered fiber net, and small holes are evenly distributed in the fiber net;the chemical fiber is ES fiber. The prepared flow guiding layer material can shorten the liquid penetration time, increase the liquid diffusion length and increase the liquid storage amount.

The invention relates to a non-woven fabric, in particular to a dry and clean high-adsorption hot-air non-woven fabric. Raw materials for the dry and clean high-adsorption hot-air non-woven fabric include, by weight, 40-50 parts of ES (ethylene-propylene side by side) composite fibers, 20-40 parts of super-absorbent fibers, 10-30 parts of silk fibers and 10-20 parts of chitin fibers. The ES composite fibers are silver-doped PE/PP (polyethylene/polypropylene) sheath-core composite fibers and/or silver-doped PE/PET (polyethylene terephthalate) core-sheath composite fibers; spinning oil is coatedon the surfaces of the ES composite fibers and comprises 10-15 wt% of antistatic agents, 25-35 wt% of aromatic plant extract, 0.05-0.1 wt% of metal chelating agents and the balance deionized water. The dry and clean high-adsorption hot-air non-woven fabric has the advantages that water can be effectively absorbed by the dry and clean high-adsorption hot-air non-woven fabric, and the dry and cleanhigh-adsorption hot-air non-woven fabric is high in liquid penetration speed, low in back bleeding, good in softness and comfort and free of irritation on skin and is antibacterial.

The invention relates to a production method of a continuous type rubber flooring mat. According to the method, rubber thin sheets are manufactured through a calendaring technology from a rubber material prepared by mixing according to a rubber formula, and then the rubber flooring mat is manufactured by continuous sulfuration and moulding. Unlike traditional rubber flooring mat products manufactured by compression molding, the rubber flooring mat subjected to the continuous sulfuration and moulding benefits large-scale construction, reduces the time and labor for pavement of the flooring mat, and largely reduces the number of seams among flooring mats, and therefore the rubber flooring mat is easier to clean, and damage caused by dirt accumulation in seams and liquid penetration along the seams is reduced. Accordingly, the rubber flooring mat produced by the method is more suitable as floor materials for public places such as hospitals, airports and trains, or residence balconies, passages, stairs, elevators, and the like.

The present invention discloses a highly effective pesticide spreading wetting penetrating agent which is prepared by mixing the surfactant, the additive and emulsifying agent, wherein the contents of each component are as follows according to the weight percentage: 30-60% of surfactant, 30-60% of additive and 4-180% of emulsifying agent. The surfactant is anionic surfactant, cationic surfactant or non-tonic surfactant. The additive is organic solvent or filling agent. The highly effective pesticide spreading wetting penetrating agent according to the invention has the advantages of simple preparing technique, wide application sphere, convenient use, stronger spreading wetting penetrability, promotion of pesticide liquid penetration through the target ceraceous layer, greatly enhanced pesticide activity, excellent economic benefit and social benefit.