Abstract:
The present invention provides a method for folding a non-uniform tape where the tape near a first longitudinal edge is thicker than the rest of the tape because of reinforcement of that first edge. In preferred embodiments, the non-uniform strip has a longitudinal strip along the top of the tape near the first edge causing its thickness to be about double that of the rest of the tape, the tape having an adhesive layer on the bottom. The method involves folding the tape along a fold line near the second longitudinal edge so that the bottom of the folded portion is adjacent and adhered to the bottom of the neighbouring portion of the tape, and the tape is then rewound into a roll.
Abstract:
A method and system are provided for injecting a color component into a plural component coating dispensing system. Base, cure and color components are pumped from respective containers at metered volume. The color component, which is preferably a low-viscosity automotive paint is injected into the either the base or cure stream at a point immediately prior to mixing all components in a dispensing device for dispensing the resulting colored fluid mixture onto a surface to be coated. The mixture may be dispensed by pouring or spraying onto the surface. The method and system are particularly useful for mixing and dispensing colored polyurethane or polyurea coatings, such as for spray-on truck bed liners.
Abstract:
The present invention provides an adhesive filament-bearing adhesive tape comprising an adhesive substrate adapted to be releasably adhered to a surface to be coated, and a filament releasably adhered to an edge of that substrate, that is useful in trimming a coating applied to a surface. The invention further provides a method of trimming a coating applied to a surface comprising applying to the surface to be coated a masking material to define the area to be coated and a filament of material of sufficient tensile strength to cut the coating material; applying coating material to the surface; allowing the coating material to dry or cure until it obtains sufficient strength to hold a cut edge; and drawing the filament through the coating to cut the coating. Finally, the present invention provides an apparatus for making a filament-bearing adhesive tape comprising means for folding an adhesive substrate along a predefined line; means for applying a filament to the interior of the fold so formed; and means for closing said fold to retain said filament at the edge of the filament bearing tape.
Abstract:
The present invention provides an adhesive filament-bearing adhesive tape comprising an adhesive substrate adapted to be releasably adhered to a surface to be coated, and a filament releasably adhered to an edge of that substrate, that is useful in trimming a coating applied to a surface. The invention further provides a method of trimming a coating applied to a surface comprising applying to the surface to be coated a masking material to define the area to be coated and a filament of material of sufficient tensile strength to cut the coating material; applying coating material to the surface; allowing the coating material to dry or cure until it obtains sufficient strength to hold a cut edge; and drawing the filament through the coating to cut the coating. Finally, the present invention provides an apparatus for making a filament-bearing adhesive tape comprising means for folding an adhesive substrate along a predefined line; means for applying a filament to the interior of the fold so formed; and means for closing said fold to retain said filament at the edge of the filament bearing tape.
Abstract:
An apparatus and method for mixing and delivering plural liquid components in a selected volume ratio. For each component, a separate motor drives a separate rotary gear pump that delivers the component to a common mixing and delivery device (spray gun). The speed of each motor, and correspondingly the volume of fluid delivered by that pump, is determined by a respective programmable computer. The individual computers are interlinked, with one master computer and the rest slave(s). Desired motor speeds are input into the computers in a selected ratio. A change in the speed of the master motor therefore produces a corresponding change in the speed of a slave motor according to the ratio. Actual motor speed is monitored and transmitted to the respective computer for feedback control. A simple manual ratio test is provided for calibration of the system. Each pump is magnetically coupled to its respective motor drive shaft.