Propulsion system for contoured film and method of use
AssigneeSolutia Europe S.A./N.V.
InventorsHerbert Sybrant van de Velde Keyser, Dirk Gustaaf Remi Vanden Broecke
Life of this patent
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Abstract
Film treatment surface provided with a propulsion system for circularly contoured film (5) along a circular path are disclosed. The essential propulsion and steering system is represented by two adjustable disks (2, 3), one being equipped with a propulsion wheel and a steering mechanism whereas the second disk embodies an idler wheel and a steering mechanism. The treatment surface was found to be beneficially suitable for the manufacture of cut shaped blanks made from shaped films of plasticized polyvinyl butyral. The blanks can be used in automobile windshields.
Claims10
Treatment surface (1) provided with a propulsion system for a web (5) of circularly contoured film along a circular path (51) to secure, for treatment and/or handling purposes, a stable position in relation to selected reference points, comprising a treatment surface (1) having a first adjustable disk (2) provided with a propulsion wheel (22) and a steering mechanism and a second adjustable disk (3) provided with an idler wheel (32) and a steering mechanism.
Treatment surface (1) provided with a propulsion system for a web (5) of circularly contoured plasticized polyvinyl butyral film along a circular path (51 ) to secure, for treatment purposes, a stable position in relation to selected reference points, comprising a treatment surface (1) having a first adjustable disk (2) provided with a propulsion wheel (22) and a steering mechanism and a second adjustable disk (3) provided with an idler wheel (32) and a steering mechanism, said first adjustable disk being located at a position of from 30% to 45% of the total length of the circular path (51) on the treatment surface, from the exit border (12), said second adjustable disk being located at a position from 10% to 20% of the total length of the circular path (51) on the treatment surface, from the entry border (11), and both adjustable disks being located in the web (5) region extending from 25% to 75% of the total width of the web.
Method for the propulsion and/or handling of a web (5) of circularly contoured film comprising moving said web, in a stable position in relation to selected reference points, over a treatment surface (1) having a first adjustable disk (2) provided with a propulsion wheel (22) and a steering mechanism and a second adjustable disk (3) provided with an idler wheel (32) and a steering mechanism.
Dependencies are inferred from the claim text.