| 摘要 |
Process for moulding sheets possessing, locally, a three-dimensional projecting or recessed structure ( 6 ), in which a blank sheet ( 7 ) is placed between the two parts of a mould, the surface of which corresponds to the negative ( 2 ) of said three-dimensional structure. At least one portion of the surface of the mould surrounding said negative possesses a feature intended to form a local reservoir able to supply or receive material of the three-dimensional structure depending on whether it is projecting or recessed, respectively.
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