| 摘要 |
A reclosable bag (100) includes a detachable reclosure tie (110) having a tail portion (120) formed by a series of spaced elongated seals (116, 117) and a closed loop (121). Apparatus for forming the reclosure tie with a bag includes first and second sealing jaws (150) with external (153, 155) and internal grippers (162L, 162R, 163L, 163R) for holding web material (151). The first sealing jaw carries cutting and perforating knives (157, 160) and a cooling block (165L) that directs cooling air onto the knives to prevent the knife temperature from rising to the melting temperature of the web material. Each sealing jaw contains a heating block (164L, 164R) with complementary sealing surfaces (104R, 105R) for forming various seals including the seals that form the tail portion of the reclosure tie. |
