Systems, methods, and devices are provided for applying a perforation layout to an extruded film. The extruded film may be processed into film roll stock used to make individual perforated bags. A perforation layout is determined based on a desired, perforation design, for individual bags, and the determined, layout is applied to the film by a perforating element. A variety of different perforations are accommodated by a variable perforating machine that produces perforations of different size, spacing, uniformity, and linearity. A laser perforating element may be implemented and controlled by a programming module configured to produce a particular perforation.
B26F 1/18 - Perforation par fentes, c.-à-d. en formant des entailles fermées à leurs extrémités sans enlèvement de matière
B26F 1/31 - Perforation par des moyens non mécaniques, p. ex. par un jet de fluide par des radiations
B23K 26/00 - Travail par rayon laser, p. ex. soudage, découpage ou perçage
B29C 59/00 - Façonnage de surface, p. ex. gaufrageAppareils à cet effet
B65B 61/02 - Dispositifs accessoires, non prévus ailleurs, opérant sur feuilles, flans, bandes, attaches, réceptacles ou paquets pour perforer, inciser ou appliquer des marques de code ou de dates avant l'emballage
B29C 47/00 - Moulage par extrusion, c. à d. en exprimant la matière à mouler dans une matrice ou une filière qui lui donne la forme désirée; Appareils à cet effet (moulage par extrusion-soufflage B29C 49/04)
B23K 26/38 - Enlèvement de matière par perçage ou découpage
B26D 5/00 - Dispositions pour manœuvrer et commander les machines ou les dispositifs de coupe, découpage, poinçonnage, perforation ou séparation autrement que par coupe
2.
METHOD AND APPARATUS FOR DEBANDING A COMPRESSIBLE BUNDLE
A method and apparatus for debanding a compressible bundle. The apparatus includes an End of Arm Tooling (EAT) component which is moved vertically downward over the bundle to a position where holding arms of the EAT component are manipulated to pick up and hold the bundle. At this position, one or more indenters of the EAT component are pressed into an upper surface of the bundle form a trough in the bundle that crosses under a band which surrounds the bundle. A cutting knife assembly of the EAT component is actuated to slide linearly along a longitudinal direction of the trough to cut the band without contacting the surface of the bundle, thereby enabling the band to drop away from the bundle. As a result, the bundle can be debanded without damaging the bags.
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