METHOD AND DEVICE FOR FORMING A PLASTIC COAT ON A SURFACE

摘要

The invention relates to a method of manufacturing a layer ( 7 ) over a surface ( 6 ) from a liquid or viscous plastic ( 8 ) which solidifies once the layer ( 7 ) is formed, characterized in that the plastic ( 8 ) is introduced in liquid or viscous form into a reservoir ( 2 ) of variable volume, at least part of the inner wall of which is defined by a portion of the said surface ( 6 ); the reservoir ( 2 ) and the surface ( 6 ) are moved relative to each other while simultaneously decreasing the volume of the reservoir ( 2 ) so as to compress the plastic ( 8 ) and make it flow through a passage ( 9 ) connecting two surface portions placed respectively inside and outside the reservoir ( 2 ), the rate of flow of the plastic ( 8 ) through the passage ( 9 ) being chosen so as to form a layer ( 7 ) over one of the said surface portions ( 6 ) whose thickness (e) is less than the height of the said passage (E). The invention also relates to a device using the method described above and to the objects obtained by this same method.