| 摘要 |
<p>File pockets (100) having a central web (101) and front and back pocket tips (102-105) for receiving document edges and a transverse bore (109) adapted to receive a hinge pin (110). Methods and apparatus (140) for forming pockets (100) from sheets (114U, 114L) of coated polymeric materials are provided having a laminating station (150), a cooling station (170), serial edge forming stations (180, 200, 220, 230), and a web subdividing station (270) wherein: i) the sheets (114U, 114L) are passed through the laminating and cooling stations (150, 170) and bonded into a laminated web (101) having unlaminated longitudinal edges (101A, 101B); ii) the edges (101A, 101B) are separated, heated and folded into T-shaped edges (181L, 181R); iii) ribbons (201L, 201R) are bonded to the T-shaped edges (181L, 181R) defining longitudinal gaps (204L, 204R) between the ribbons and edges; iv) the bonded ribbons (201L, 201R) and edges (181L, 181R) are folded over by rollers (221, 222); v) the folded over edges are heated while air is expressed from one gap (204L) to eliminate such gap; vi) the folded over edges are shaped, cooled and set in profile control assemblies (234, 265); and vii), the web (101) is cut into pockets (100). </p> |
