Cartridge holder, multi-chamber cartridges and metering and mixing devices which comprise same

• Main Authors: Kruger, Thomas, Schneider, Ernst, Vosskuhl, Joachim, Meisner, Roland Andreas, Schops, Sibylle
• Format: Patent
• Language: English
• Published: 16.03.2017
• Subjects: MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TRANSPORTING

The invention relates to metering and mixing devices comprising, i. a cartridge holder (1), having a receptacle (1.1) for multi-chamber cartridges (2), a compressed-air connection (1.2) and a connection (1.3) for an application device, wherein the receptacle (1.1) has an inner tube (1.4) which is arranged coaxially to the walls of the cartridge holder (1) and which is equipped with static mixing elements (1.5), and ii. a multi-chamber cartridge (2) for the cartridge holder (1) according to i., wherein said multi-chamber cartridge comprises an upper portion (2.1), comprising a directional valve (2.1.1); a central portion (2.2) of which the centre is configured as a tubular vacuum (2.2.1) in the direction of the longitudinal axis, and the tubular vacuum (2.2.1) is enclosed by at least two chambers (2.2.2 and 2.2.3), wherein the chambers are tubular and arranged in the direction of the longitudinal axis of the cartridge and adjacent chambers are separated from one another by a common dividing wall (2.2.4) and each chamber is connected to the upper portion (2.1) via at least one respective opening (2.2.5); and comprises a lower portion (2.3) which comprises a piston (2.3.1 and 2.3.2) for each of the chambers, wherein the pistons (2.3.1 and 2.3.2) close off the chambers (2.2.2 and 2.2.3) tightly from below and are connected to one another via cutting devices (2.3.3), and the cutting devices (2.3.3) are arranged such that they are able to sever the common dividing wall (2.2.4) of respectively adjacent chambers when the pistons (2.3.1 and 2.3.2) are displaced in the direction of the upper portion (2.1), wherein the multi-chamber cartridge (2) is arranged in the cartridge holder (1) such that the inner wall of the inner tubes of the multi-chamber cartridge (2) bears tightly on the outer wall of the tube (1.4) of the cartridge holder (1). Furthermore, the invention relates to the above cartridge holder (1) and the above multi-chamber cartridge (2) and also to a multi-chamber cartridge (2) having an integrated static mixing device and to a metering and mixing device comprising the latter. The invention also relates to a method for conveying, metering and mixing a plurality of components and to a method for coating substrates, in each case using the above metering and mixing devices.