An apparatus for accurately coating discrete patches of coating on a moving substrate is described. The coating system applies coating to a moving substrate using a coating distribution device. A flow pump pumps the coating from a reservoir into the coating distributing device where a portion of the coating is deposited and the remainder is allowed to returned back to the reservoir. The coating distribution device selectively meters a portion of the coating it receives from the flow pump onto the substrate at a variable rate. When the coating distribution device transitions from metering to not metering and to reverse metering, it induces a vacuum in the coating distribution device. The induced vacuum causes a portion of the coating being distributed onto the substrate to flow in reverse quickly breaking the deposition of the coating.

An adhesive dispensing system and method of dispensing liquid material are disclosed. The adhesive dispensing system includes an adhesive dispensing module receiving hot melt adhesive through the inlet at a low pressure and rapidly developing high pressure at an outlet to thereby jet the hot melt adhesive therefrom. The system also includes a pressure container containing a supply of hot melt adhesive and configured to melt or maintain a heated temperature of the hot melt adhesive. A low pressure liquid passageway communicates between the adhesive dispensing module and the pressure container. The system also includes a pressurized air source in fluid communication with the adhesive dispensing module to operate the adhesive dispensing module by moving a piston to generate high pressure at the outlet of a nozzle for jetting hot melt adhesive as a discrete volume toward a substrate.

A process for applying a coating material onto a substrate as a non-uniform patterned layer of coating material, the method including providing a first distribution manifold having a cavity and a first multiplicity of dispensing outlets in fluid communication with the cavity, providing a second distribution manifold having a cavity and a second multiplicity of dispensing outlets in fluid communication with the cavity, creating relative motion between a substrate and the dispensing outlets in a first direction, dispensing a first coating material from the first dispensing outlets while maintaining the relative motion and simultaneously translating the plurality of dispensing outlets in a second direction non-parallel to the first direction, and dispensing a second coating material from the second dispensing outlets while maintaining the relative motion and simultaneously translating the plurality of dispensing outlets in a second direction non-parallel to the first direction. Useful non-uniformly patterned coated articles can be prepared using the process.

Coating apparatuses and methods are provided for direct coatings with various shapes. The coating apparatus includes a die body with one or more bores. One or more cams are pivotally mounted within the bores and have one or more recessed areas formed into the respective peripheral surfaces thereof. The one or more cams are rotatable within the die body to dynamically, independently vary the width or shape of the respectively dispensed one or more fluid coatings.

Systems and methods of forming roofing shingles having selected patterns of an adhesive material applied thereto include a conveying system along which a roofing substrate material is conveyed past an adhesive applicator having a nozzle configured to apply a fiberized adhesive to a surface of the roofing substrate material, the fiberized adhesive adapted to attach a layer of the roofing substrate material to an additional layer for forming the roofing shingles. A drive system is coupled to the nozzle and is configured to move the nozzle across the roofing substrate material as the roofing substrate material is moved along a processing path for selectively applying a pattern of the fiberized adhesive across the roofing substrate material.

Dual sided coating system and method for coating substrates, such as substrates useful as battery electrodes. In certain embodiments, the system includes an inline calender station positioned between the dryer and the rewind of the substrate; i.e., positioned downstream, in the direction of substrate (or web) travel, of the dryer, and upstream of the rewind. In certain embodiments, the calender operation is positioned immediately downstream of the dryer; no intermediate equipment that processes the substrata, such as a vacuum dryer, is positioned between the dryer and the calender. Advantages of such a system and method include twice the throughput compared to single side coating operations, a smaller equipment footprint compared to tandem coating lines, lower capital cost and operating cost compared to tandem coating lines, and fewer issues with wrinkles in the substrate.

A fluid application device having a contact nozzle assembly with a fluidic oscillator is provided. The fluid application device includes an applicator head and a nozzle assembly. The nozzle assembly includes a first conduit configured to receive a first fluid from the applicator head, a second conduit configured to receive a second fluid from the applicator head and an application conduit including a receptacle and first and second branches. The receptacle is fluidically connected with the first conduit and configured to receive the first fluid. The first and second branches are fluidically connected to the second conduit and receptacle and are configured to receive the second fluid. The nozzle assembly further includes an orifice fluidically connected to the application conduit and configured to discharge the first fluid for application onto a strand of material, and a guide slot extending from the orifice and configured to receive the strand of material.

A method for applying individual portions of adhesive to a substrate, in which the portions of adhesive are applied successively by means of a valve, a coil of an electromagnet being energized with an actuation voltage pulse for each successive dispensing of portions of adhesive from the valve, which causes a valve opening of the valve for an actual opening duration during which adhesive can flow out of the valve for dispensing the respective adhesive portion by moving a closure member of the valve from a closed position into an open position. The actual opening duration of at least one valve opening which follows a valve opening which precedes it in time is shortened in accordance with one or more valve operating parameters to compensate for electromagnetic interference effects which extend the actual opening duration of the subsequent valve opening.

An applicator for applying adhesive to a moving web has a housing with an interior chamber, an inlet and a discharge port. The inlet and discharge port are in fluid communication with the interior chamber. A rotor is disposed within the interior chamber of the housing. The rotor has a body and a nonlinear channel extending about at least a portion of the body. The nonlinear channel is selectively positionable for fluid communication with the inlet and the discharge port of the housing such that adhesive flowing into the housing through the inlet flows through and is directed by the nonlinear channel to the discharge port in the housing. The rotor is rotatable relative to the housing to change the position of the nonlinear channel relative to the discharge port and thereby change the location from which adhesive flows from the discharge port.

An apparatus for providing non-contact application of fluids onto web materials and articles is disclosed. The apparatus comprises a gravure roll having a hollow rotating shell having a plurality of cavities disposed within the outer surface thereof and a stationary cylindrical core having a central bore and a channel disposed therein. A fluid disposed within a respective cavity of the plurality of cavities disposed within the outer surface of the hollow rotating shell is removed from the respective cavity by the positive pressure when the positive pressure is fluidly communicated from the central bore through the channel and into the cavity from the surface of the stationary cylindrical core.