Patent ID: 6393809
Filing Date: 2002-05-28
Classification: B29C,B31B,B65B

Abstract:
Apparatus for forming a plurality of pouches from a folded flexible web, the folded web advancing downstream at web speed along a predetermined continuous web path and having registration marks at spaced intervals, the apparatus comprising:a pair of drive rolls disposed to engage the web, a servo controlled drive roll motor for controlling the speed of the drive rolls; a pair of seal bars, the seal bars operable to pinch either side of the web path, at least one servo controlled seal bar motor for operating the seal bars to engage the web to form registered seals therein as the web is driven downstream; a cutter positioned downstream of the drive rolls, the cutter operable to engage the web, a servo controlled cutter motor drivingly connected to the cutter to actuate the cutter at cut points relative to the registration marks to form registered pouches; an infeed sensor located at a predetermined position relative to the drive rolls, seal bars and cutter for sensing the registration marks and delivering a sync signal; and a controller responsive to the sync signal and controlling the respective servo motors to maintain web registration.