Abstract:
In this disclosure, air flow is formed above chemical liquid film and a move of the chemical liquid is generated by making the air flow into a contact with the surface of chemical liquid. Further, a negative pressure is generated in a space between a processing object substrate and a plate by rotating the plate. Consequently, uniformity of processing of chemical liquid is improved, so that liquid removing step can be carried out effectively. As a result, yield rate of chemical liquid treatment can be improved.
Abstract:
A coating system is provided having at least one first basecoat applicator for applying a first basecoat layer over at least a portion of a surface of a substrate, at least one second basecoat applicator for applying a second basecoat layer over the first basecoat layer, and a first drying chamber located between the first and second basecoat applicators, the first drying chamber providing a temperature of about 50null F. to about 90null F. (10-32.5null C.), a relative humidity of about 40% to about 80% and an air velocity of about 20 FPM to about 150 FPM (0.10-0.76 m/s) at the surface of the first basecoat layer. A method of coating a substrate is provided in which a first liquid basecoat material is applied over the substrate. The first basecoat material is exposed to air having a temperature of about 50null F. to about 90null F. (10-32.5null C.), a relative humidity of about 40% to about 80% and an air velocity of about 20 FPM to about 150 FPM (0.10-0.76 m/s) at the surface of the first basecoat material for a period of about 10 to about 180 seconds. A second liquid basecoat material is then applied over the first basecoat material.
Abstract:
A layer of viscous material is applied to a substrate by constricting a stream of pressurized viscous material prior to entry into a chamber wherein the constricted filament-shaped stream is acted upon by radially inwardly and forwardly oriented currents of compressed air which reduce the thickness of the stream and issue with such stream from the chamber through an orifice. The orientation of air currents in the chamber is such that the filament is not imparted a swirling movement. The flow of air issuing from the chamber through the orifice forms a hollow cone which surrounds the filament of viscous material on its way toward contact with the substrate.
Abstract:
The interior of a pipe is coated with a uniform thickness of plastic. A fluidized bed of heat-meltable plastic material in particular form is connected to the inlet end of the pipe, while the opposed end of the pipe is made attachable to a source of reduced pressure. A source of compressible fluid is also connected to the inlet end of the pipe. The pipe is preheated and then rotated axially while the compressible fluid flows therethrough. The compressible fluid flowing to the inlet is suddenly terminated while a flow from the fluidized bed is immediately established so that the vacuum at the outlet end of the pipe causes uninterrupted mass flow and pulls a finite pocket of the finely divided plastic into the pipe. The flow of particular plastic material is terminated, while the flow of compressed gas is immediately re-established, thereby pushing the pocket of plastic material into and through the pipe. Timing means associated with the flow from the fluidized bed enables the vacuum source to be removed before the pocket of material arrives at the outlet end of the pipe. This sequence of manipulative steps applies a coating of plastic material on the interior surface of the spinning pipe. The spinning action, together with the elevated temperature of the pipe, enhances the uniformity of the deposited plastic material.
Abstract:
A method of lining a pipe with settable material including the steps of arranging the pipe with its longitudinal axis inclined at an angle to the horizontal, introducing a selected amount of liquid material into the pipe at a predetermined rate so that the liquid material flows down along the pipe, shifting the pipe to a horizontal position and spinning the pipe about its axis to distribute the material, spinning continuing until the material has set. The method is particularly applicable for lining pipes with polyurethane. For pipes with end flanges end faces of the lining material can be formed integral with the lining.
Abstract:
A method of lining a pipe with thermosetting synthetic plastics material including the steps of arranging the pipe with its longitudinal axis inclined at an acute angle to the horizontal, introducing liquid lining material into the pipe at a predetermined rate for a predetermined time, shifting the pipe to a horizontal position shortly before or at the completion of introduction of the liquid material, spinning the pipe about its axis and blowing hot air axially through the pipe after spinning has started but before the lining material has set thereby to remove entrained air bubbles. The method is particularly applicable for lining pipes with polyurethane, especially pipes with end flanges and covers to form an end face of the lining material.
Abstract:
A method of coating a substrate with a white molecular coating. A colloidal based primer is prepared having on a mass basis between 30-40% suspensions of fine-sized spherical particles of nonporous silica dispersed in liquid phase. The primer is applied to the substrate and allowed to dry. A molecular adsorber coating is prepared by treating a zeolite with a colloidal silica binder thereby providing a treated pigment having a mass ratio of the colloidal silica to the zeolite is in a range of 2.0 to 2.6, then processing the treated pigment into a powder thereby facilitating sprayability and then mixing said treated zeolite with a colloidal solution containing silica. The coating is then sprayed onto the primer and allowed to dry. The resultant coating provides adequate bond stability and strength necessary for flight applications within an environment for vacuum of space applications.
Abstract:
The present application discloses methods for using an adhesive composition comprising a polymer of the formulae A, B and C: wherein the variables are as defined herein.
Abstract:
Methods and systems for cleaning, coating and sealing leaks in existing nonmetal pipes, in a single operation. A nonmetal piping system can be cleaned in one pass by dry particulates forced and pulled by air throughout the piping system by a generator and a vacuum. Nonmetal pipes with nonmetal fittings or nonmetal pipes with metal fittings or nonmetal pipes with a combination of metal and nonmetal fittings can be protected from wear by water erosion and rupturing, extending the life of pipes made of a nonmetal material selected from at least one of plastics, PVC (polyvinyl chloride), composite materials, or polybutylene. Coatings can be applied to nonmetal pipes having diameters up to approximately 6″. Leak sealants of at least approximately 4 mils thick can cover insides of nonmetal pipes, and can include novel mixtures of fillers and epoxy materials, and viscosity levels. A positive pressure can be maintained within the nonmetal pipes during applications. Piping systems can be returned to service within approximately 96 hours.