Abstract:
A powder coating material for use in the electrostatic powder coating of pharmaceutical tablet cores has the following properties: it is pharmaceutically acceptable, it is treatable to form a film coating on the surfaces of the tablet core and it includes composite particles comprising two or more components having different physical and/or chemical properties.
Abstract:
A process for manufacturing a flexible packaging material from a single or multi-layer film or film-type laminate containing a sealing layer of powder-type starting material deposited on at least one free surface of the film or film-type laminate. The sealing layer is deposited locally, i.e., over only those parts of the surface to be sealed, and the deposition of the sealing layer takes place by an electrostatic coating process in which coating particles are electrostatically charged and transferred to the film surface to be coated by applying an electric field, and melted and/or hardened to give a coating film in the form of a sealing layer.
Abstract:
A corrosion-resistant coated strap is formed from an elongated metal strap base element having a width and a thickness and defining first and second sides and a pair of edge regions. A coating is applied and cured onto the base element. The coating has a substantially consistent thickness at the first and second sides and at about the edge regions. A method for making the coated strap includes providing a metal strap and conveying the strap through a coating apparatus. A powder is electrostatically applied on the first side of the strap, which covers the first side and the opposing edges. The powder is applied on the second side of the strap, covering the second side and the opposing edges. The powder is melted to form a flowable material and is cured on the strap. The coating method is carried out in an in-line strap manufacturing process.
Abstract:
The embodiments disclose means to inhibit the growth and migration of bacteria, mildew and fungus by applying various coatings which contain an inorganic anti-microbial agent onto metal, glass, and plastic substrates. The substrates are used in the manufacture of components for the interior of refrigerators and freezers, which include wire (100) and glass shelving (200, 300), plastic crisper baskets (500) and other articles within the food storage area. The coatings include the inorganic anti-microbial agent combinet with a matrix resin which are applied by electrostatic powder coating (916), roller coating (810), or robotic spraying (710), and then cured.
Abstract:
A process for the deposition of particulate material 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 the 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 a flow of particles of the desired substance is formed; and (iv) exposing a receiver surface to the exhausted flow of particles of the desired substance and depositing a uniform layer of particles on the receiver surface.
Abstract:
The present invention provides powder coating finishes comprising inter-mixed basecoat and color layers of coating powders, wherein the basecoat layer has a first color and one or more color layers has one or more accent color different from the first color. In the finishes, each of the first color and the one or more accent color is visible in the said finish to provide three-dimensional appearing antique look, swirl look and marbleized patterns. One or more of the coating powders used to form the finish may comprise a texture forming coating powder. Further, weatherable powder coating finishes comprise one or more protective powder coating layer between the substrate and basecoat color layer. In addition, the present invention provides methods for producing patterned powder coating finishes comprising applying to the substrate one or more basecoat coating powder layer having a first color, applying dry-on-dry one or more accent color coating powder layer over the basecoat powder layer, forming patterns in the resulting layers of coating powder, such as with one or more flat bristle brushes, and curing to form powder coating finishes.
Abstract:
The surface of a continuous web, the fibrous portion of which consists of papermaking fibres, is coated with a coating powder. The web is allowed to move between electrodes, which are in different potentials. A coating powder of inorganic material and polymeric binder material is applied on the surface of the web by utilizing the difference in the electric potential. The coated surface of the web is then finished. The coating powder comprises 10.1-99.5 wt.-% of inorganic material. A dry surface treated sheet material is thus formed.
Abstract:
A method of producing an iridescent reflecting surface on an object is presented. Flakes of dry non metallic reflecting material such as cholesteric liquid crystal (CLC) material are applied to the surface so that the flakes are parallel with the surface and bound with a binder to the surface.
Abstract:
A method and apparatus are provided for curing powdered coatings on the face of porous wood products, such as medium density fibreboard (MDF), wherein a pair of inclined infrared catalytic heaters are used to apply heat directly onto the side edges of the board. In addition, catalytic heaters that are normally used to heat and cure the face surface of the board are moved father back to reduce their effectiveness and to limit out-gassing of entrapped air from the inner low density core of the board. This arrangement also allows the coating to cure at the side edges of the board at approximately the same rate as the face of the board, promoting a more uniform curing of the powder coating.
Abstract:
A method produces patterned deposition on a substrate (14) from compressed fluid. A delivery system (12) cooperates with a controlled environment (30, 100, 200) retaining a substrate (14) for receiving precipitated functional material 44 along a fluid delivery path (13) from the delivery system (12). A mask (22) is arranged in close proximity to the substrate (14) for forming the patterned deposition on the substrate (14).