| 摘要 |
<p>Spreader body (1) with a pouch, comprising a rigid outer metal case (2) containing an impermeable and flexible metal pouch (3) joined to the case, the said case and the said pouch, which are formed from blanks (24) and (34) respectively, characterised in that: a) the said body (1) is obtained by the tapering and co-rolling of the ends of the two blanks after joining them, the amount of shrinkage being less than 1.15; b) the upper end (37) of the blank (34) has a wall thickness E greater than the average thickness E0 of the skirt (35) of the blank (34), the ratio E/E0 being at least 1.15. <IMAGE></p> |
