The invention relates to a device (1) for melting a hot-melt adhesive (3), comprising a heating plate (5), a plunger (7), the plunger (7) comprising a plunger end face (9), and a mounting (11), wherein the mounting (11) is suitable for receiving a storage container (13), which has a rigid lateral wall (15) and two opposite side faces (17, 19) and contains the hot-melt adhesive (3), in such a manner that the hot-melt adhesive (3) is arranged between the plunger (7) and the to heating plate (5), and the plunger end face (9) and the heating plate (5) are arranged opposite one another, wherein the heating plate (5), the plunger (7) and the mounting (11) are so dimensioned that the storage container (13) having an inner volume (21) of more than 50 L can be received. The invention relates further to a method for melting a hot-melt adhesive.

A device and method for dispensing a flowable medium which is an adhesive, a hot glue or a hot melt adhesive. The device has a housing with an interior space and a rod mounted in the housing, wherein the rod is movable by means of an actuator between a first end position and a second end position in an axial direction. The device comprises a diaphragm, wherein the rod passes through the diaphragm, wherein the diaphragm is mounted in a sealed manner in the housing radially on the outside and is mounted in a sealed manner in the rod radially on the inside, wherein the diaphragm divides the interior space into a first cavity and a second cavity and separates the first cavity from the second cavity in a fluid tight manner, and wherein the first cavity serves to hold the flowable medium. The device has at least one channel which opens into the first cavity and through which the flowable medium can flow into the first cavity, and a dispensing opening into the first cavity for dispensing the flowable medium, wherein the rod has a sealing section, and wherein the sealing section closes the dispensing opening in the first end position and is arranged at a distance from the dispensing opening in the second end position. A pressure medium acting on the diaphragm is arranged in the second cavity.

A device for dispensing a flowable medium, includes a housing having a cavity for receiving the flowable medium, a rod mounted in a bearing section of the housing, wherein the rod is movable by means of an actuator between a first end position and a second end position in an axial direction, a dispensing opening, opening into the cavity, for dispensing the flowable medium, wherein the rod has a sealing section, wherein the sealing section closes the dispensing opening in the first end position and is arranged at a distance from the dispensing opening in the second end position, a bellows seal for sealing off the bearing section from the cavity, wherein the rod passes through the bellows seal, wherein the bellows seal is mounted in a sealed manner on the rod and in a sealed manner on the housing, wherein a first section of the bellows seal is connected to the rod in a manner fixed relative to the rod, and a second section of the bellows seal is connected to the housing in a manner fixed relative to the housing, wherein the bellows seal has at least one compensating section for compensating an axial compression or extension of the bellows seal, wherein the compensating section projects radially relative to adjoining regions of the bellows seal, and having at least one channel, opening into the cavity, through which the flowable medium can flow into the cavity, wherein a projection of a center line of a channel section of the at least one channel, said channel section opening into the cavity, onto a projection plane formed perpendicularly to the axial direction forms a circle tangent of a circle formed concentrically with the rod.

A method of detecting a defect in an applied volume of material includes detecting a pressure discontinuity during dispensing the volume of material along a predetermined path on a substrate. The pressure discontinuity is indicative of the defect in the applied volume of material. The location of the defect along the predetermined path is function of a start time of the pressure discontinuity and the size of the defect is a function of a time duration of the pressure discontinuity. The method can further include determining whether or not to repair the defect as a function of the location and the size of the defect in the applied volume of material. The method includes repairing the defect by re-directing the material applicator to the location of the defect and dispensing additional material at the location of the defect.

According to one embodiment, a pump includes a first chamber configured to store a first fluid. The pump includes a second chamber configured to store a second fluid, the second chamber being positioned on a side of the first chamber. Volume of a space of the second chamber configured to store the second fluid is variable. The pump includes an elongated member having a first end portion and a second end portion, the first end portion provided in the second chamber and the second end portion provided in the first chamber.

A piston includes: a base body; a sealing ring provided at an outer peripheral surface of the base body and configured to slidingly contact an inner peripheral surface of a container; a pressing body provided at one side of the base body in a non-hermetical state with respect to the container, the one side being close to a fluid; and a supporting member supporting the pressing body in a state where the pressing body is separated from the base body. The base body includes an air discharge hole through which an inside and outside of the container communicate with each other, the inside and outside of the container being sealed by the sealing ring. The pressing body can approach and separate from the base body between a first position at which the pressing body opens the air discharge hole and a second position at which the pressing body closes the air discharge hole. The pressing body is supported by the supporting member at the first position and moves to the second position by force applied from the fluid in the container.

A substrate processing apparatus includes a supercritical fluid producing apparatus including a pump configured to send out a processing fluid; a processing container configured to perform a supercritical fluid processing on a substrate with a processing fluid in a supercritical state sent from the supercritical fluid producing apparatus; and a controller configured to control at least the supercritical fluid producing apparatus. When a pressure increase is performed within the processing container by using the processing fluid, the controller determines a first supply rate at which the processing fluid is supplied to the processing container based on a target time during which the pressure increase is performed, an amount of the processing fluid required for the pressure increase and a density of the processing fluid. Further, the supercritical fluid producing apparatus supplies the processing fluid to the processing container based on the first supply rate.

Techniques herein include a bladder-based dispense system using an elongate bladder configured to selectively expand and contract to assist with dispense actions. This dispense system compensates for filter-lag, which often accompanies fluid filtering for microfabrication. This dispense system also provides a high-purity and high precision dispense unit. A modular hydraulic unit houses the elongate bladder and hydraulic fluid in contact with an exterior surface of the bladder. When pressurized process fluid is in the elongate bladder, hydraulic controls can selectively reduce pressure on the bladder to cause expansion, and then selectively increase hydraulic pressure to assist with a dispense action.

The present disclosure describes a method and system for controlling dispensing of adhesive from an applicator. The method includes pumping adhesive from a plurality of pump assemblies to a plurality of dispensing modules and measuring current draw from each of the plurality of pump assemblies. The method also includes determining an adjustment to an operating speed of each of the plurality of pump assemblies individually based on their respective current draws and adjusting the operating speed of each of the plurality of pump assemblies individually.

A dispensing apparatus having various features is described. The dispensing apparatus can receive a cartridge having a movable plunger configured to direct the fluid through a dispensing valve. The plunger can be movable under a force applied by air pressure. The cartridge can be inserted in the dispensing apparatus using a clamping and sealing mechanism and can be released using a cartridge ejector. The dispensing apparatus can include a ball valve having a ball defining an internal passageway that selectively aligns with a second internal passageway outside of the ball, a brush mounted via an elongating mechanism, and/or a gear train transmitting power from the elongating mechanism.