| 摘要 |
<p>Lids for containers with an internal coating for hermetic sealing are made by storing a sealing compsn. in a heated pressure unit, coating the surface of a sheet with a lacquer coat, cutting and inserting the sheet, projecting the sealing compsn. into the interior of the lid, centrifuging and moulding, and folding over the free edge of the lid.</p> |
