Abstract:
Deposition of particulate material of a substance on a surface includes: (i) charging a vessel with a compressed fluid; (ii) introducing into the vessel a first feed stream comprising a solvent and the substance and a second feed stream comprising the compressed fluid, wherein the substance is less soluble in the compressed fluid relative to its solubility in the solvent and the solvent is soluble in the compressed fluid, and wherein the first feed stream is dispersed in the compressed fluid, allowing extraction of the solvent into the compressed fluid and precipitation of particles of the substance; (iii) exhausting components from the vessel at a rate substantially equal to the rate of addition of such components to the vessel in step (ii) through a restrictive passage whereby a flow of particles of the substance is formed; and (iv) exposing a receiver surface to the exhausted flow of particles. ® KIPO & WIPO 2007
Abstract:
포토레지스트 유입라인의 손상 없이 용기를 교환할 수 있는 포토레지스트 공급 장치기 개시되어 있다. 상술한 장치는 포토레지스트를 수용하는 용기와 용기로부터 배출되는 포토레지스트를 임시 저장하는 버퍼 탱크 및 용기와 결합하는 제2 체결부와 포토레지스트 유입라인과 질소가스 제공 라인과 결합하는 제1 체결부를 포함하며, 제1 체결부와 제2 체결부가 밀착 체결됨으로서 용기에 포토레지스트 유입 라인과 질소 제공 라인이 연결되는 구조를 갖는 체결 유닛을 포함한다. 따라서, 포토레지스트 유입라인이 서로 얽혀 파손되는 문제점을 방지할 수 있을 뿐만 아니라 상기 용기의 교환 작업을 보다 빨리 수행할 수 있다.
Abstract:
This invention relates to a method and system of applying a fluid material to a roofing surface. By modifying a peristaltic pump-driven sprayer device, a fluid material having a viscosity of 10,000 to 40,000 centipoise at 25° C. can be effectively sprayed onto a roofing surface. Additionally, the use of a modified peristaltic pump-driven sprayer device allows for the fluid material to be applied onto the roofing surface at a faster rate than other spraying methods.
Abstract:
Spraying heads may be used in spray guns for applying a pressurized aerosol material in the form of jets or spray. A spraying nozzle for spraying a polyurethane material includes a cylindrical body provided, on a first end, with a base having a mounting aperture extending into the cylindrical body, forming a cavity for arranging a head of a gun. The base of the nozzle is in the form of oppositely-disposed leaves. A second end of the body is provided with a cylindrical shoulder, a through-bore of which is communicated with a V-shaped and laterally non-closed recess at the region of an outlet of the sprayed material. Oppositely arranged plate-like protrusions adjoin a lateral surfaces of the cylindrical shoulder. A mounting aperture end which adjoins the base has a circumferential cut. The spraying nozzle is provided with an attachment means used when in an inoperative position.
Abstract:
The present invention refers to a method for preparing a superhydrophobic surface on a solid substrate comprising the steps of (a) providing a solvent in the form of a pressurized fluid in a vessel, wherein the fluid exhibits a decrease in solvency power with decreasing pressure; (b) adding a hydrophobic substance to the solvent as a solute, which substance is soluble with the pressurized fluid and has the ability to crystallize/precipitate after expansion of the fluid, thereby obtaining a solution of the solvent and the solute in the vessel; (c) having at least one orifice opened on the vessel, thereby causing the pressurized solution to flow out of the vessel and depressurize in ambient air or in an expansion chamber having a lower pressure than within the vessel, the solute thereby forming particles; and (d) depositing the particles on the substrate in order to obtain a superhydrophobic surface. Hereby, a pressurized fluid which expands rapidly as a result of depressurization is used to prepare the superhydrophobic surface, thereby facilitating the preparation of the surface. Moreover, the invention refers to an arrangement for preparing a superhydrophobic surface on a substrate, a superhydrophobic film prepared by the method of the invention, and a substrate having deposited thereon the superhydrophobic firm.
Abstract:
This disclosure describes the application of a supplemental corona source to provide surface charge on submicrometer particles to enhance collection efficiency and micro-structural density during electrostatic collection.
Abstract:
A method of dispersing fine particles in a spray including the steps of providing a liquid carrier having a critical point and fine particles of at least one material. The fine particles are dispersed in the liquid carrier. A supercritical carrier containing dispersed particles is created by driving the liquid carrier containing dispersed fine particles above the critical point. The pressure of the supercritical carrier containing dispersed particles is reduced thereby forming a vapor carrier containing dispersed particles therein. The vapor carrier containing dispersed fine particles is then discharged.
Abstract:
A process for the patterning of a desired substance on a surface includes: (i) charging a particle formation vessel with a compressed fluid; (ii) introducing into the particle formation vessel a first feed stream comprising a solvent and the desired substance dissolved therein and a second feed stream comprising the compressed fluid, wherein the desired substance is less soluble in the compressed fluid relative to its solubility in the solvent and the solvent is soluble in the compressed fluid, and wherein the first feed stream is dispersed in the compressed fluid, allowing extraction of the solvent into the compressed fluid and precipitation of particles of the desired substance; (iii) exhausting compressed fluid, solvent and the desired substance from the particle formation vessel at a rate substantially equal to a rate of addition of such components to the vessel in step (ii) through a restrictive passage to a lower pressure whereby the compressed fluid is transformed to a gaseous state, and wherein the restrictive passage includes a discharge device that produces a shaped beam of particles of the desired substance at a point beyond an outlet of the discharge device, where the fluid is in a gaseous state at a location before or beyond the outlet of the discharge device; and (iv) exposing a receiver surface to the shaped beam of particles of the desired substance and selectively depositing a pattern of particles on the receiver surface.
Abstract:
The invention is related to a coating delivery system that includes at least one pressure vessel operable in sealed and unsealed conditions, a deliverable substance including a coating component interspersed with at least one of liquefied carbon dioxide and supercritical carbon dioxide, and a pressurizing fluid. The deliverable substance is disposed in a first pressure vessel of the at least one pressure vessel, and the pressurizing fluid directly exerts a pressure on the deliverable substance to effect transport thereof when the pressure vessel is in the unsealed condition. The deliverable substance may be spray discharged.