Abstract:
An apparatus for feeding one or more fibre threads, e.g. of glass, at an adjustable feeding rate. The apparatus comprises at least two synchronously driven feed rollers (11, 12) forming at least one nip for the fibre thread (10) and consisting of a first motor driven roller (11) and a second co-rotating roller (12). The motor driven roller (11) and/or the co-rotating roller (12) are/is provided with one or more, each in its respective peripheral slot (21) in the cylindrical mantle surface of the roller housed O-ring (22) of an elastic incompressible material, e.g. rubber. The O-ring bears on the peripheral surface of the adjacent roller (12) to transmit the rotary motion by means of friction.
Abstract:
An apparatus for feeding one or more fibre threads, e.g. of glass, at an adjustable feeding rate. The apparatus comprises at least two synchronously driven feed rollers (11, 12) forming at least one nip for the fibre thread (10) and consisting of a first motor driven roller (11) and a second co-rotating roller (12). The motor driven roller (11) and/or the co-rotating roller (12) are/is provided with one or more, each in its respective peripheral slot (21) in the cylindrical mantle surface of the roller housed O-ring (22) of an elastic incompressible material, e.g. rubber. The O-ring bears on the peripheral surface of the adjacent roller (12) to transmit the rotary motion by means of friction.
Abstract:
Method and device to pressure balance hoses at supply of two different components with substantially the same pressure to an extrusion head (13), where the flow of the second component is substantially below the flow of the first component, e.g. at thermosetting plastic extrusion. The first hose (10) for supply of the first component during at least a substantial part of the path to the extrusion head (13) is arranged to enclose the second hose (11) for supply of the second component.
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.