Abstract:
Procédé et dispositif équilibrant la pression de conduits acheminant deux composants différents sensiblement à la même pression jusqu'à une tête d'extrusion (13), dans lesquels l'écoulement du second composant est sensiblement inférieur à l'écoulement du premier composant, par exemple dans le domaine de l'extrusion de plastique thermodurcissable. Le premier conduit (10) acheminant le premier composant sur au moins une partie substantielle du chemin jusqu'à ladite tête d'extrusion (13), est agencé pour renfermer un second conduit (11) acheminant le second composant.
Abstract:
Ejection and stop of a powder flow are switched while maintaining a once generated steady flow without stopping it. A processing nozzle includes a supply source of a fluid containing a powder, a first channel through which the fluid supplied from the supply source passes, a second channel that supplies the fluid to an ejection port of the nozzle, a third channel that releases the fluid outside the nozzle, and a switch that causes the first channel and the second channel to communicate with each other when supplying the fluid to the ejection port, and causes the first channel and the third channel to communicate with each other when not supplying the fluid to the ejection port.
Abstract:
A dosage device (999) for extruding a bicomponent or monocomponent sealant, particularly for an automatic machine (1000) for sealing a perimetric edge of an insulating glazing unit (1) constituted by at least two glass sheets (2, 2', 2", 2"', 2M, 2'm, 2"m) and by at least one spacer frame (3, 3', 3", 5, 5', 5"), having a finite width (w), which is arranged proximate to the perimeter at a finite distance (d) from the margin of the glass sheets (2, 2', 2", 2"', 2M, 2'm, 2"m); the dosage device is constituted by a first dosage assembly (400) and by a separate second dosage assembly (500) for the dosage and feeding of the sealant, which can be activated alternately, in a first feeding step and in a third feeding step, so that one of them provides flow continuity to an extrusion nozzle (301) while the other one is in the reloading step, the first and second dosage assemblies (400, 500) being activatable, in a second swapping step that is intermediate with respect to the first and third feeding steps, simultaneously and jointly, one of them having a flow-rate ramp that passes from the steady-state value to zero and the other one complementarily having a flow-rate ramp that passes from zero to the steady-state value.
Abstract:
A system and method for applying a two-part adhesive to a substrate includes a prime mover (30) for providing an output torque, a first pump (36A) connected to the prime mover (30) for receiving the output torque, the first pump (36A) having an inlet (38A) and an outlet (38B), a second pump (36B) connected to the prime mover for receiving the output torque, the second pump (36B) having an inlet (40A) and an outlet (40B), a first compound in communication with the inlet of the first pump, a second compound in communication with the inlet of the second pump, a first accumulator (50A) in communication with the outlet of the first pump, a second accumulator (50B) in communication with the outlet of the second pump, a first manifold (52A) in communication with the outlet of the first pump, and a second manifold (52B) in communication with the outlet of the second pump.
Abstract:
A spin coater that can be used to apply multiple coating compositions over an optical substrate, is described. The spin coater includes, a coater bowl configured to collect excess coating material expelled from an optical substrate being coated, a rotatable chuck configured to receive and rotate the optical substrate in the bowl during coating, a plurality of coating reservoirs, each containing a coating material, and an indexable coating reservoir platform containing the plurality of reservoirs and configured to index a selected reservoir into a dispensing position above the coater bowl. The spin coater can include or have associated therewith at least one curing station, in which each curing station is independently configured to cure at least partially at least one applied coating material. Each curing station can include at least one of a thermal curing station, a UV curing station, and/or an IR curing station.
Abstract:
A system for applying a two-part adhesive to a substrate includes a prime mover (30) for providing an output torque, a first pump (36A) connected to the prime mover (30) for receiving the output torque, the first pump (36A) having an inlet (38A) and an outlet (40A), a second pump (36B) connected to the prime mover (30) for receiving the output torque, the second pump (36B) having an inlet (38B) and an outlet (40B), a first compound in communication with the inlet (38A) of the first pump (36A), a second compound in communication with the inlet (38B) of the second pump (36B), a first accumulator (50A) in communication with the outlet (40A) of the first pump (36A), a second accumulator (50B) in communication with the outlet (40B) of the second pump (36B), a first manifold (52A) in communication with the outlet (40A) of the first pump (36A), and a second manifold (52B) in communication with the outlet (40B) of the second pump (36B). A plurality of applicators (70) is included.
Abstract:
A method of making an article having a substrate and two materials applied thereto includes providing a metered fluid dispensing system (100) having first and second supply sources for supplying first and second fluids, respectively, an output device (110) having at least one dispensing nozzle and at least two pumps (104, 106). The dispensing system is configured to selectively control the passage of the first and second fluids. The substrate (154) is conveyed past the fluid dispensing system in a machine direction and the first, or second, or first and second fluids are applied to the substrate in a plurality of segments, each segment having a volume per unit length and applied in a length in the machine direction to define a pattern, and in which wherein the pattern includes at least some areas in which the first or second fluid is present without the other fluid.
Abstract:
A method for dispensing a foamed material onto a substrate surface, comprising the steps: generating a relative movement between the substrate surface to be coated and an exit opening of a material dispensing apparatus, mixing at least two material components in a mixing device to provide a free-flowing, foamable dispensing material, generating a pressure differential between the mixing device and the dispensing region located downstream in the direction of flow from a discharge cross-section of the exit opening, conveying the dispensing material from the mixing device for the dispensing material to the exit opening, and discharging the dispensing material from the exit opening onto the substrate surface. The invention proposes that the dispensing material be kept under such a pressure in the adjacent region upstream from the discharge cross-section of the exit opening that the dispensing material in this region has a foaming rate that is less than 10% of the foaming rate which ensues at the end of the foaming process.
Abstract:
Apparatus (101) for producing material by a chemical reaction between a first chemical reagent and a second chemical reagent. The apparatus comprises a chemical mixing arrangement; a dispensing chamber (317); a dispensing piston (312) configured to dispense reacting mixture from said dispensing chamber; and a control means (501) for controlling the movement of said dispensing piston and for controlling operation of the chemical mixing arrangement. The chemical mixing arrangement has a mixing chamber (305) and injection means (306) configured to produce a jet of a first chemical reagent and a jet of a second chemical reagent such that said jets collide within said mixing chamber to produce reacting mixture. The dispensing chamber (317) has an inlet for receiving the reacting mixture from the mixing chamber and an outlet (319) for dispensing the reacting mixture. The control means (501) is arranged to co-ordinate movement of the dispensing piston with the operation of the chemical mixing arrangement such that the chemical mixing arrangement is caused to mix the chemical reagents while the dispensing piston is caused to move at a controlled rate.
Abstract:
Die Mischvorrichtung zum Vermischen von einer Binder-Komponente (A) und einer Härter-Komponente (B) zu einem pastösen oder flüssigen Mischgut für ein Gerät (100) zur Herstellung einer gebrauchsfertigen Spachtelmasse für die Verspachtelung von Oberflächen von Fahrzeugkarosserien, umfasst einen hohlzylinderartigen Statorteil (16) und einen in diesem konzentrisch um seine Längsachse (20) drehbar aufgenommenen Rotorteil (19), wobei die Mischkammer (14) zwischen dem Statorteil (16) und dem Rotorteil (19) ringspaltartig ausgebildet ist, und sich mehrere am Statorteil (16) angeformte erste Mischzähne (23) radial nach innen und mehrere am Rotorteil (19) angeformte zweite Mischzähne (24) radial nach außen in eine Mischkammer hinein erstrecken, um vermittels einer Rotationsbewegung des Rotorteils (19) im Statorteil (16) die Mischzähne (23, 24) gegeneinander zu bewegen und eine Vermischung der Komponenten (A, B) zu schaffen, wobei die Mischzähne (23, 24) zur Vergrößerung der Mischkammer (14) eine Mindestlänge von 4 mm aufweisen und der Abstand des Rotorteils (19) vom Statorteil (16) im Eintrittsbereich der beiden Komponenten (A, B) 0,1 mm beträgt.