| 摘要 |
<p>An improved pop-up system for dispensing sheet products from continuous perforated web material. A perforated web (12) is drawn through a slit-like dispensing opening (14) which, though close-fitting, does not constrict the web (12). Catch flaps (18) capable of swinging out of plane with the web are formed in the web by two symmetrical cuts (20) in the same line extending perpendicularly inward from the longitudinal edges of the web; the cuts each extend through one-third of the web (12) and are bridged by a perforated region (16). When the pop-up presentment (24) is pulled, the catch flaps are drawn to the opening (14) where they catch, bend backward, and jam, becoming caught flaps (22). This causes enough tension in the perforated region (34) drawn outside the opening (14) to break the dispensed individual sheet (10) free, leaving another pop-up presentment (24). A number of different, more developed dispensers for rolls and folded stacks using this system are further detailed in additional embodiments.</p> |
