The invention concerns a device 51 for mixing at least two components, characterised by the fact that the mixing device 51 comprises two containers 52 and 53 each provided with: a. at least one opening 110 connected by a conduit 55 and provided with a device allowing the available volume of the containers 52 and 53 to be varied alternately, pistons 50 that are able to be moved in opposing directions, so as to transfer the content from one of the containers 52 or 53 into the other container 52 or 53 through the openings 110 and the conduit 55; and b. at least one inlet opening X allowing the at least two components to enter; said mixing device not comprising an additional outlet opening, one of the inlet openings X allowing both at least one component to enter, and the mixture of the at least two components obtained to leave. The invention also concerns a method for mixing cosmetic components using this mixing device and a device for manufacturing and dispensing a customised cosmetic composition comprising said mixing device.

Systems for a plastic pump/actuator capable of containing and pumping organic solvents and lubricants and having a more desirable lubricity within the system. The system has at least two cylinders, with plungers therein, oppositely disposed from each other and configured to operably connect to a pump.

Mixing device (1) and fluid mixing method, by means of successive transfers between syringes. The mixing method comprises placing a pair of syringes (2, 3) in the mixing device (1), adjusting a variable fixing element adaptable to the pair of syringes (2, 3) and selecting and running a mixing programme, being the mixing force, the speed and the range and the number of transfers adjustable. The mixing device comprises a mobile carriage (7) longitudinally movable and fixing elements (8, 9) with an adjustable distance between them. The invention allows for the mixing or emulsifying of blood fluids with different viscosity, particularly a protein gel and a platelet-rich plasma, for the preparation of dermatological formulations, in a versatile, hygienic and effective manner.

The invention relates to a piston system (1) for use in a homogenizer, comprising a piston (2) that is configured and arranged to make a reciprocating movement in use of the piston system, a cylinder (3) that is configured and arranged to receive and guide at least a first part of the piston, a first supply channel (8) that is configured and arranged to supply a lubricating medium (9) to a portion (10) of the first part of the piston that in use is arranged inside the cylinder, and a second supply channel (13) that is configured and arranged to, in use, supply a cooling medium (14) to a second part of the piston outside the cylinder. Also disclosed is a process for the production of an elastomer agglomerate composition forcing a slurry comprising elastomeric particles through an aperture to obtain the elastomer agglomerate composition using the piston system.

Devices and methods for preparing a slurry for coating onto a substrate. The devices and methods of the present disclosure relate to providing a slurry in a closed volume with at least one passage. The slurry includes a solvent, a powder, and a binder. The slurry can also include a dispersion agent. The slurry is forced repeatedly under high pressure through the at least one passage in a first flow direction and then back through the at least one passage in a second flow direction, opposite the first flow direction. The forcing homogenously disperses the powder and the binder within the solvent. Both sides of the substrate are then coated simultaneously with the slurry extruded from the closed volume after the forcing. Curing of the coated slurry includes freeze drying to preserve the porosity of the slurry on the substrate.

Provided in one implementation is a method that includes introducing a volume of raw material into a chamber of a cavitation machine. The raw material can include a mixture comprising a powder and a solvent. The powder can have a first average particle size in the raw material. The method includes applying a hydrodynamic cavitation process to the raw material to produce a product material. The powder can have a second average particle size, smaller than the first average particle size, in the product material. The method includes causing the product material to exit the cavitation chamber and drying the product material to remove the solvent. Apparatus employed to apply the method are also provided.

Provided in one embodiment is a method of making paste for solar cells. The method can include forcing silver through a feed tube coupled to a hydrodynamic cavitation chamber using an air-driven piston. The method can include subjecting the silver to hydrodynamic cavitation in the hydrodynamic cavitation chamber by using a hydraulic pump to pass the silver sequentially through a primary orifice, a secondary orifice, and a final orifice within the hydrodynamic cavitation chamber to produce the paste for the solar cells. The silver can include up to three unique silver powders having a total particle size distribution from 0.1 microns to 10 microns. A first silver powder can have a first average particle size of 1.5 um, a second silver powder having a second average particle size of 0.5 um, and a third silver powder having a third average particle size of 0.2 um.

The invention is a cartridge (1, 100) for stereolithography machines (200), which comprises a supporting structure (3) provided with connection means (10) suited to removably connect it to the stereolithography machine (200), a first reservoir (5) suited to contain a material (M1, M2) and provided with a first duct (8) and with a delivery mouth (81) which are suited to place it in communication with a container (4), a feeding unit (7) suited to feed the material (M1, M2) from the first reservoir (5) to the container (4), shutter means (9) suited to close the delivery mouth (81) of the first duct (8), and a second reservoir (12) suited to contain the material (M1, M2). The cartridge (1, 100) furthermore comprises a second duct (13) interposed between the first reservoir (5) and the second reservoir (12) in such a way as to place them in communication with each other. The feeding unit (7) is configured so that it conveys the material (M1, M2) from the first reservoir (5) to the second reservoir (12) and vice versa through the second duct (13) when the shutter means (9) are in the position in which they close the delivery mouth (81).

Disclosed are systems and methods for a mixing device having a mixing chamber bounded by an inner surface of a wall, the wall having a cylindrical outer face and at least one feed duct which ends on one side with an opening in the cylindrical outer surface of the wall and on the other side with an opening in the inner surface of the wall. The mixing device also includes a magazine having a cylindrical inner surface, the cylinder axis of which is coaxial with a cylinder axis of the cylindrical outer surface of the wall, and a multiplicity of ducts. The magazine and wall are movable with respect to one another such that the openings of the multiplicity of ducts in the inner surface of the magazine are each connectable in a medium-conducting manner to the opening of the at least one feed duct in the outer surface of the wall.

Devices and methods for preparing a slurry for coating onto a substrate. The devices and methods of the present disclosure relate to providing a slurry in a closed volume with at least one passage. The slurry includes a solvent, a powder, and a binder. The slurry can also include a dispersion agent. The slurry is forced repeatedly under high pressure through the at least one passage in a first flow direction and then back through the at least one passage in a second flow direction, opposite the first flow direction. The forcing homogenously disperses the powder and the binder within the solvent. Both sides of the substrate are then coated simultaneously with the slurry extruded from the closed volume after the forcing. Curing of the coated slurry includes freeze drying to preserve the porosity of the slurry on the substrate.