52 results about "Carbon Dioxide Snow" patented technology

Implementations of the present disclosure generally relate to planarization of surfaces on substrates and on layers formed on substrates, including an apparatus for in-situ temperature control during polishing, and methods of using the same. More specifically, implementations of the present disclosure relate to in-situ temperature control with a condensed gas during a chemical-mechanical polishing (CMP) process. In one implementation, the method comprises polishing one or more substrates against a polishing surface in the presence of a polishing fluid during a polishing process to remove a portion of a material formed on the one or more substrates. A temperature of the polishing surface is monitored during the polishing process. Carbon dioxide snow is delivered to the polishing surface in response to the monitored temperature to maintain the temperature of the polishing surface at a target value during the polishing process.

In accordance with an embodiment of the present invention, a semiconductor device is manufactured by arranging a plurality of semiconductor devices on a frame with an adhesive foil. The plurality of semiconductor devices is attached to the adhesive foil. The plurality of semiconductor devices is removed from the frame with the adhesive foil using a carbon dioxide snow jet and/or a laser process.

The invention relates to a device and method for cleaning, activating or pre-treating workpieces by blasting a carbon dioxide snow which is produced from pressurised CO2-containing fluids and at least one type of carrying compressed gas and is accelerated by means of a discharge nozzle (14), wherein a two-phase carbon dioxide mixture of a carbon dioxide gas and carbon dioxide particles is produced in an agglomeration chamber (8) by agglomerating and compressing carbon dioxide snow crystals which are radially added to the carrying gas in a multistage mixing chamber (10, 11, 12) comprising a central jet pipe (4), around which the carbon dioxide mixture circulates and which is used for supplying said carrying gas in such a manner that a high-energy turbulent gas flow for processing a workpiece is obtainable.

This invention relates to a novel kit, transportable apparatus and method for generating in-situ CO2 snow block within the apparatus. An item such as a biological sample can be stored and transported within the same apparatus that is employed for creating the CO2 snow block. The apparatus is capable of preserving the sample during transport. The invention also includes a specially designed CO2 snow charger system including a charger and meshed conduit. The charger system is operated in accordance with the methods of the present invention to create the in-situ CO2 snow block within a container that can be also used for transport.

A method for the selective removal of the metal film layer (14) accumulated upon a photoresist layer (10) during processing of substrates using a stream of carbon dioxide spray (20) without disturbing conductor portions is provided. A constant stream (20) of high pressure CO2 snow is applied to the metal film layer thereby rapidly cooling the metal layer on top of said resist layer causing it to shrink rapidly, and to debond, and peel from the photoresist layer underneath. The temperature of the substrate is raised and maintained at significantly higher than room temperature. Continuing the application of the CO2 spray causes thermal shock to the photoresist under the metalized layer causing large cracks in the remaining metal layer portions, said cracks typically including at least one loose metal edge. The CO2 spray is continually applied to the cracks thereby peeling away the remaining metal portions, leaving the exposed photoresist and underlying surface features. Preferably, continued treatment of the surface with CO2 snow particals erodes a surface layer of the photoresist and heavily cross-linked layers created during the metalization process. After the metal layer and the surface layer of the photoresist are removed, a simple chemical strip, such as acetone, completely removes all the remaining resist, leaving the wafer with undamaged conductor portions.

A method for plasma treatment and painting of a surface, the surface including a plurality of different materials includes blasting the surface with a carbon dioxide snow so as to activate the surface to improve an adhesive strength; and treating the surface with a plasma treatment using at least one plasma nozzle following the blasting step, the treating including guiding the at least one plasma nozzle at a distance of not more than 15 mm from the surface at a feed rate of not more than 50 m/min.

The invention belongs to the field of automobile parts and relates to a coating process of an automotive upholstery. The coating process comprises the steps that S1, pretreatment is conducted, specifically, carbon dioxide snowflake cleaning is conducted, and dust and electricity removing treatment is conducted; S2, primer is sprayed, specifically, the waterborne polyurethane epoxy resin primer issprayed; S3, finishing coat is sprayed, specifically, the coat is sprayed, and levelling is conducted for 10-20 min after spraying; and S4, solidifying and cooling are conducted, specifically, solidifying is conducted at 70-90 DEG C, and cooling is conducted. The coating process further comprises the step that ultrasonic treatment is conducted after the S3, specifically, the automotive upholsterycoated with the finishing coat is coated with polyethylene, and ultrasonic treatment is conducted for 80-120 s at the pressure of 10-20 MPa. The finishing coat comprises 12-20 parts of hydroxy acrylicemulsion, 53-63 parts of polystyrene grafted polyurethane, 9-15 parts of carboxy methyl cellulose, 8-14 parts of cyclodextrin wrapped filler, 3-8 parts of a coalescing agent and 10-15 parts of deionized water.

A system and method for chilling a food product in or proximate to a food processing device adapted to dice, slice, shred, chop, or cut the food product is disclosed. The disclosed system and method involves a two or three stage application of a liquid cryogen or carbon dioxide snow to cool the food product. The cooling stages include a first stage of cryogen application upstream of the entrance of the food processing device, a second stage of cryogen application or delivery into one or more zones within the food processing device, and a third stage of cryogen application to the region proximate to and downstream of the exit to the food processing device.

The present invention relates to a device for producing high-strength CO₂ pellets from CO₂ snow, in particular, for a cleaning device for blasting surfaces to be treated with a mixed-flow consisting of a compressed gas and CO₂ pellets, including a main compressing device for compressing CO₂ snow for forming CO₂ pellets, further including a pre-compressing device for pre-compressing CO₂ snow produced by expanding liquid CO₂, wherein the pre-compressing device is in the form of a fluid-mechanical pre-compressing device, wherein the pre-compressing device includes an expansion device for producing CO₂ snow from liquid or gaseous CO₂ and a pre-compression chamber for receiving and pre-compressing the produced CO₂ snow and wherein the expansion device and the pre-compression chamber are connected to one another in fluidic manner.

This invention relates to a novel kit, transportable apparatus and method for generating in-situ CO2 snow block within the apparatus. An item such as a biological sample can be stored and transported within the same apparatus that is employed for creating the CO2 snow block. The apparatus is capable of preserving the sample during transport. The invention also includes a specially designed CO2 snow charger system including a charger and meshed conduit. The charger system is operated in accordance with the methods of the present invention to create the in-situ CO2 snow block within a container that can be also used for transport.

The invention relates to an apparatus for producing CO₂ pellets from CO₂ snow, in particular, for a cleaning device for spraying surfaces to be treated with a mixed stream of a pressurized gas and CO₂ pellets, includes a compressor device for compressing CO₂ snow to form CO₂ pellets. The compressor device includes a gear compressor. The gear compressor includes at least one compressor wheel which is mounted rotatable about a first rotation axis and has a plurality of compressing elements, and includes at least one intake wheel which has a plurality of snow intakes for accepting CO₂ snow. The snow intakes are configured corresponding to the compressing elements. The intake wheel is mounted rotatable about a second rotation axis and cooperates with the at least one compressor wheel. The intake wheel includes an intake wheel sleeve with an intake wheel sleeve wall.

The invention discloses a cleaning treatment method for a metal film circuit on a ferrite substrate before electroplating, and belongs to the field of microelectronic device processing. The cleaning treatment method comprises the following steps: carrying out primary spray cleaning on a ferrite substrate by using carbon dioxide snow fluid, carrying out soaking treatment by using an acid solution,carrying out secondary spray cleaning on the ferrite substrate by using the carbon dioxide snow fluid, flushing the ferrite substrate by using pure water and the like. By adopting the method providedby the invention, the processing time is shortened by at least 50% compared with the original processing time, the reliability of an electroplated film layer is improved, and the requirements of circulator/isolator devices on the electroplating process efficiency and reliability are met.

A device for providing a patient with a cryotherapy process that is directed to the ablation of a lesion on the patient, includes: (a) a piping assembly adapted to create a spray of carbon dioxide snow, (b) a snow horn having a pressure relief means and a boundary wall, (c) a tubular applicator with ends between which extends an interior wall that has an interior diameter that increases in value between these ends, (d) an applicator tip with a metal portion and adapted to allow it to connect to the applicator's distal end, and (e) a push rod having a distal end with a base to which is attached an anchor.

The invention provides a solar photovoltaic panel surface cleaning system and a cleaning method. The system is characterized in that the whole cleaning device is arranged on an unmanned aerial vehicle, an infrared camera and a visible light camera which are used for shooting are arranged on the unmanned aerial vehicle, a stain positioning system used for positioning is further arranged on the unmanned aerial vehicle, and meanwhile, a device for loading cleaning liquid and a device for loading carbon dioxide are arranged. Compared with an existing photovoltaic panel decontamination technology, the system adopts an environment-friendly stain cleaning agent, the surface of a solar photovoltaic panel is sprayed with the stain cleaning agent, meanwhile, a carbon dioxide snow decontamination technology is matched, so that residual stains are cleaned again without leaving water stains; and therefore, the problem of water shortage in regions such as deserts or gobi is solved.

The invention provides an efficient carbon dioxide snow spray gun. The efficient carbon dioxide snow spray gun comprises a casing, a carbon dioxide expansion cavity, a compressed air cavity, a mixing nozzle arranged at the front end of the casing as well as a carbon dioxide inlet and a compressed air inlet which are arranged at the rear end of the casing, wherein the carbon dioxide expansion cavity and the compressed air cavity are formed in the casing and mutually communicate. The efficient carbon dioxide snow spray gun is characterized in that a spiral slot is formed in the inner wall of the carbon dioxide expansion cavity. After the spiral slot is formed in the inner wall of the carbon dioxide expansion cavity, when sent high-pressure carbon dioxide gas is rapidly decompressed in the carbon dioxide expansion cavity and has phase change, the phase change route of carbon dioxide is effectively prolonged due to arrangement of the spiral slot, more carbon dioxide has phase change, small-particle solids are formed, the phase change conversion rate of carbon dioxide is increased, and the efficient cleaning requirement is met. The efficient carbon dioxide snow spray gun is simple in structure, convenient to use and remarkable in cleaning effect.