Abstract: A double shaft paddle mixer, including a barrel chamber, and a first paddle screw and a second paddle screw. The first paddle screw is provided with first paddles and the second paddle screw is provided with second paddles. The barrel chamber includes a crushing zone and a mixing zone. The crushing zone is partly separated from the mixing zone by a partition member. A first inlet is connected to the crushing zone and a second inlet is connected to the mixing zone and an outlet connected to the mixing zone. The double shaft paddle mixer can be part of an arrangement and part of a method for producing paste.

Abstract: The present invention relates to a method of producing an elastic coating which is suitable for waterproofing, by using film forming onto a solid surface, textile or mesh. In this method, a dispersion which comprises i) one or more adhesives and/or coagulating aggregates, mainly in solid form, ii) one or more polymers, and iii) one or more surface-active agents, is brought into contact with a coagulator of the surface-active agent of the dispersion. The present invention also relates to a coating which is prepared by using the present method.

Abstract: The present invention relates to a method of producing an elastic coating which is suitable for waterproofing, by using film forming onto a solid surface, textile or mesh. In this method, a dispersion which comprises i) one or more adhesives and/or coagulating aggregates, mainly in solid form, ii) one or more polymers, and iii) one or more surface-active agents, is brought into contact with a coagulator of the surface-active agent of the dispersion. The present invention also relates to a coating which is prepared by using the present method.

Abstract: The present invention relates to a water-based polymer dispersion, which comprises a polymer part and aggregate particles, which are mixed with the polymer part. According to the present invention, the polymer part comprises at least two polymers that are dispersed with a surface-active agent, which polymers have particles of different sizes, in which case the aggregate particles are formed of metal oxide particles, and the dispersion comprises a coagulator. The dispersion can be used, for example, to produce elastic coatings, adhesive layers and polymer films.

Abstract: The present invention relates to a nozzle for mixing at least two fluid substances together for coating a surface with a reaction product of said fluid substances and possibly a reaction product of the aforesaid substances and the surface material to be sprayed with them, said nozzle comprising substantially concentric channels for each fluid substance, the orifices of said channels being disposed close to each other at the end of the nozzle. According to the invention, between the concentric channels for fluid substances to be mixed together, the nozzle has a likewise substantially concentric intermediate channel connected to a compressed air source, the orifice of the intermediate channel connected to the compressed air source has a tapered form and a diameter at most equal to the inner diameter of the intermediate channel, and the orifice of the intermediate channel is directed obliquely towards the center axis of the nozzle.

Abstract: The present invention relates to a nozzle for mixing at least two fluid substances together for coating a surface with a reaction product of said fluid substances and possibly a reaction product of the aforesaid substances and the surface material to be sprayed with them, said nozzle comprising substantially concentric channels for each fluid substance, the orifices of said channels being disposed close to each other at the end of the nozzle. According to the invention, between the concentric channels for fluid substances to be mixed together, the nozzle has a likewise substantially concentric intermediate channel connected to a compressed air source, the orifice of the intermediate channel connected to the compressed air source has a tapered form and a diameter at most equal to the inner diameter of the intermediate channel, and the orifice of the intermediate channel is directed obliquely towards the center axis of the nozzle.

Abstract: Nozzle apparatus of the over-pressure type for handling web material includes a nozzle box having a nozzle carrying surface which is curved towards the interior of the box to define a recess in the direction of web run and a pair of opposed nozzle slots located so that gas jets issuing therefrom follow the nozzle carrying surface in opposite directions with respect to each other so as to meet in the region of the curved recess to form a tranquilization zone. In this manner an air cushion is formed for the web which extends over a considerable distance in the direction of the web run to carry the web.

Abstract: Apparatus for drying a web, such as a paper web, including a plurality of nozzle members successively located one after the other both in and transverse to the direction of travel of the web, each of the nozzle members defining a substantially annular slit and a carrying surface associated with the slit for directing gaseous drying fluid substantially contiguous with the carrying surface in a substantially radial flow field relative to the annular slit and in a direction substantially parallel to the web.