Process for producing article having given surface pattern

Details Process for producing article having given surface pattern Process for producing article having given surface pattern

B - Operations, Transporting

29

C

B29C 39/10 (2006.01) B29C 33/42 (2006.01) B29C 33/56 (2006.01) B29C 41/12 (2006.01) B29C 41/20 (2006.01) B29C 41/38 (2006.01)

Patent

CA 2404821

A method of efficiently manufacturing a covered article having an excellent releasability and a specified surface shape with high accuracy, comprising the steps of holding a forming mold so that the surface thereof faces upward horizontally, feeding sol-gel material liquid onto the surface to form a film, heating the surface, bringing a base material into contact with the film and further heating the surface, releasing the forming mold, and further heating the surface if necessary to cover the surface of the base material with the gel film having the surface of such a shape that the surface shape of the forming mold is inversed, wherein a sol-gel material liquid film edge part maintaining district is provided at a position lower than the surface of the forming mold along the outer peripheral surface of the forming mold, and the sol-gel material liquid is fed so that the edge part of the film of the sol- gel material liquid forms the film reaching the district beyond the surface of the forming mold.

L'invention concerne un procédé de fabrication efficace de couverture d'un article, de forme de surface spécifiée, très facilement amovible, ce procédé consistant à maintenir un moule de formage de façon que sa surface soit présentée horizontalement vers le haut, à déposer sur la surface un matériau liquide sol-gel afin de former un film, à chauffer la surface, à amener un matériau de base en contact avec le film et à continuer de chauffer la surface, à enlever le moule de formage, puis, si nécessaire, à continuer de chauffer la surface, afin de couvrir la surface du matériau de base avec le film de gel dont la surface représente la forme inversée de la surface du moule de formage. La région de maintien de la bordure du film de liquide sol-gel est située à une position inférieure à la surface du moule de formage le long de la surface périphérique extérieure du moule, et le matériau liquide sol-gel est déposé de façon que la bordure du film de liquide sol-gel atteigne la région au delà de la surface du moule de formage.

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