Abstract:
The invention refers to a method of obtaining a pore-sealed surface having a desired finished structure on a lacquered sheet or web material, preferably a lacquered slab or board of a material containing wood fibres (lignocellulose) such as board or particle board material. According to the invention the slab or board is coated with a wet or powdery, clear or pigmented lacquer material. The slab or board so coated is dried and/or cured and the slab or board thereafter subjected to a compression operation under high mechanical pressure during a short time so that flowing of the lacquer material and/or sheet material takes place and a surface structure having good evenness and tightness is obtained. The invention also comprises a slab or board of finished structure manufactured according to the invention.
Abstract:
A strippable paint is caused to sag onto coating surfaces (1, 2 and 3) of an automobile (V) within the range to be protected, from a plurality of nozzles (10) juxtaposed in the width-wise direction of the automobile (V) above the coating surfaces (1, 2 and 3) while controlling the number of discharge nozzles in accordance with the size of the range to be protected. Then, the strippable paint (18) is spread over the entire portions of the coating surfaces (1 to 3) within the range to be protected, and a range borne by each nozzle (10) is relatively reduced so that run-down of the strippable paint can be efficiently carried out, dust of the paint is prevented from scattering over a wide range, process steps can be reduced by eliminating a masking step and inspection/correction step, and a work load can be mitigated.
Abstract:
Asbestos-free diaphragms for chlor-alkali electrolytic cells are prepared by establishing a liquid permeable diaphragm base mat of fibrous synthetic polymeric material on the cathode structure, providing a coating of inorganic particulate material on the base mat, and treating the coated base mat with a nonionic or anionic surfactant. Preferably, the base mat is coated with the inorganic particulate material using a slurry of the inorganic particulate material suspended in an alkali metal halide brine solution containing the surfactant.
Abstract:
A method is provided for reducing particle formation during manufacture of shell caps (12) for pharmaceutical containers (10). The method entails providing a solid polymeric coating (25) on substantially all surfaces of the shell cap (12) to form coated shell caps before permitting the coated shell caps to contact each other or other objects. A pharmaceutical container (10) which employs the shell cap (12) also is provided. The pharmaceutical container (10) comprises a vial (5) for storing medicinal compositions therein and a shell cap (12) for sealing the vial (5). The shell cap (12) includes a hollow metallic preform substrate (1) and a solid polymeric coating (25) which encapsulates the substrate (1). An optional liner (15) can be fitted to the inner surface of the shell cap (12) having the polymeric coating thereon (25) and an optional cover (20) can be provided over the cap (12). When the shell cap (12) is fitted to vial (5), liner (15) engages edge (7) of vial (5) to provide an additional seal top protecting the contents within the vial (5).
Abstract:
A protective polysaccharide film containing a buffering agent in an amount which is effective for substantially resisting pH changes due to environmental influence; a solution for the application onto a surface to be protected, comprising: a) a polysaccharide dissolved in an aqueous solvent therefore; and b) a buffering agent, said solution being capable of forming a film on said surface which on swelling or dissolution maintains a substantially constant pH due to environmental influence; and a process for protecting a surface from non-desired contamination and to facilitate the removal of such contamination from said surface, comprising the steps: a) applying a solution according to any of claims 7 to 12 on said surface before being subjected to contamination; b) allowing the applied solution to dry with the formation of a solid film on said surface, said film being capable of substantially resisting pH changes due to environmental influence; c) treating said film with a liquid capable of redissolving the film or providing swelling thereof; and d) removing the undesired contamination by completely or partially removing said film from the surface.
Abstract:
A method of applying various coatings, such as low density polyethylene (14, 20), oxygen scavenging resinous material (16), and anti-scalping resinous material (20), to a surface (12) of a food or beverage container (10). The coatings may be applied in a predetermined area using a printing process, brushing, spraying, or rolling. The container (10) may be a paperboard, gable top beverage container, or an aseptic paperboard container.
Abstract:
A powder sprayer for the powder coating of an object is provided with an annular charging channel (9) for electrostatic charging of the powder. The channel is defined by an inner, longitudinal rod (8) and an outer tube (7), both being manufactured of electrically insulating material. The rod (8) is centred in the tube (7) by means of spacer and turbulence members (10) with vanes which are obliquely inclined or helically configurated in relation to the longitudinal direction of the sprayer. In order to improve the charging and blending of the powder, the turbulators (10) are arranged pair-wise after one another, each with a plurality of vanes which are distributed about the rod (8) so that through flow channels are formed between the vanes. The vanes in adjacent turbulators (10) are, in this instance, offset in the circumferential direction in relation to one another, so that the leading edges of the vanes in a downstream turbulator (10) lie in register with the through flow channels in an upstream turbulator (10).
Abstract:
A method of metallizing a substrate by applying a metallic film to the substrate and measuring the film at a plurality of different lateral positions of the substrate by inducing an eddy current in the film and detecting the magnitude of the film to provide an indication of film thickness.
Abstract:
In a process for overcoating a substrate having a cured primer coating with a curable topcoat which when cured is swellable by a stripping solvent, a non-volatile polar material is applied to the primed substrate from an aqueous liquid vehicle before coating with the topcoat. The polar material facilitates the removal of the topcoat from the primer by the stripping solvent, as is required for example when repainting aircraft. The polar material has sufficiently high affinity for the primer surface that it is not washed off the primer surface by water rinsing or by application of the topcoat paint.
Abstract:
The invention concerns a method of repairing defects (2) which only cover a small area on a surface coating on a flat component (3), e.g. a vehicle bodywork part, by means of a number of repair tools (44, 45) which are used in sequence, the surface affected by the repair work being restricted essentially to the area covered by the defect (2). In order to ensure easy handling of the individual repair tools (44, 45) and rapid execution of the repair work for the same repair quality, the invention proposes that the repair tools (44, 45) are mounted in such a way that they are aligned and coordinated with respect to each other in a defined way and moved, mounted on a common mounting (1; 103), into the area of the defect (2). After positioning the mounting (1; 103) on the flat component (3) and setting the first (44) of the repair tools (44, 45) in position by means of preferably optical adjustment means (42, 43), additional repair tools (45) reach their correct working position due to the movement of the tool carrier (27; 100) carrying them.