| 摘要 |
<p>A fold-retainer (26) for a memoryless, flexible tube (10) having a sealed end (22) and an open end (20) for discharging the contents by folding the sealed end of the tube is provided by securing a retaining ring (30) to the sealed end (22) of the tube (10). Preferably, the retaining ring (30) is formed by transversely sealing the tube body along a seam (24) so a short portion extends beyond the seam (24) and then transversely cutting between the seam (24) and the extension along most of the width of the tube. The uncut portion forms a tab (28) that is integral with the sealed end (22) of the tube (10) while the cut portion forms a retaining ring (26) that may be used to hold the tube in a folded position. Preferably, the cut is arcuate to increase the diameter of the retaining ring (26). Alternatively, the fold retainer (26) may be formed by a double ring. One ring (38) encircles the sealed end (22) to secure the free retaining ring (36) in proximity to the tube.</p> |
