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| Number | Title | Issue Date |
| 7182008 | Sheet material cutting method for cutting thermal imaging material A decurl apparatus includes a heating device to heat an image recording carrier web at a constant temperature, which exceeds the glass transition temperature of a support for a constant time period; and a cooling device for subsequent cooling of the image recording ... | 02/27/2007 |
| 7121993 | Sheet folding apparatus A sheet folding apparatus for folding a set of sheets into two at a center thereof, includes: a sheet number recognition section that recognizes the number of sheets in the set; a pair of rotating rollers pressed against each other to form a nip portion; a blade mem... | 10/17/2006 |
| 7108650 | Procedure of attaching sheets and padded envelope The envelope comprises layers of plain un-coated kraft paper and of bubble-wrap polyethylene. A stack of the layers is joined at the marginal edges of the envelope by squeezing the stack between a pair of points-dies, which are formed with points that puncture the k... | 09/19/2006 |
| 6962557 | Device for welding plastic films Devices for cross-welding or cross-separating welding plastic films (2) are used in a manner known per se in machines for producing bags, said devices comprising a welding roller (3) and a heated welder terminal (4) which can be moved reciprocal... | 11/08/2005 |
| 6776748 | Device for breaking the nicks connecting the blanks of a pile of cardboard sheets A stack of sheets, e.g. cardboard, with each sheet having lines of cut longitudinally and/or transversely. Apparatus for breaking the nicks connecting two edges of line of cut on the stacked sheets includes a first support and transport moving longitudinally and a f... | 08/17/2004 |
| 6623411 | Bag-making machine with web alignment control A plastic bag making machine which includes a web sensor, a push station, a sealing and cutting station, and a wicketer and stacking station has its punch apparatus is carried on a punch carriage movable in a direction transverse to the web feed direction... | 09/23/2003 |
| 6575219 | Method and device for interlocking stackwise plastic bags, especially bags for automatic machines, by welding The invention relates to a method and a device for interlocking stackwise plastic bags, especially bags for automatic machines, by welding, wherein welding is effected by an interlocking device (21) integrated into the grip hand (17) of a robot (16) with ... | 06/10/2003 |
| 6453646 | Method for producing bags The invention relates to a method and a device for continuously producing, handling and filling bags (8), especially bags for handling by automatic machines, formed from a thermoplastic line of film. The aim of the invention is to facilitate handling in t... | 09/24/2002 |
| 6379291 | Method and apparatus for producing and packing foil bags The present invention relates to a foil-bag producing and packing apparatus comprising at least two feed means for feeding foil material, a connecting means for connecting the foil material fed, the connecting portions--in a direction transverse to the fe... | 04/30/2002 |
| 6186933 | Plastic bag manufacturing process A process for bag manufacture of a bag having a first dimension from a sealed bottom of the bag to an open top of the bag, the bag being fabricated from a continuous tube of plastic film bag material. The process includes the steps of providing a continuo... | 02/13/2001 |
| 6149565 | Method and apparatus for producing bags in two rows with subsequent stacking, especially for the production of bags from flattened blown thermoplastic foil A method of and an apparatus for producing stacks of bags where, instead of connecting the position of the foil web, a marking on the foil web is detected and used to correct the positions of the devices which operate on the web. These devices can include... | 11/21/2000 |
| 6135938 | Machines for manufacturing containers of plastic material such as envelopes, bags, handbags and the like The machine (1) is provided for production of containers (8) having a trapezoid or triangular form in plane, starting from two films (4) of plastic material superposed on each other. The machine (1) comprises a work station (6) provided with a pair of hea... | 10/24/2000 |
| 6004252 | Bag making apparatus and method for making plastic bags including a wicket transfer unit and wicket conveyor A bag forming machine includes draw rolls for drawing a folded plastic web to and through a cut and seal unit for forming of successive bags. A wicketer receives the individual bags and rotates to carry successive bags to an opposite discharge end and dep... | 12/21/1999 |
| 5967962 | Apparatus and method for forming aperture cutouts for a pack of self-opening plastic bags An apparatus, method, and pack of tabless, self-opening bags with flapless aperture cutouts pack. In the apparatus and method, cylindrical dies connected to a vacuum source are used to cut out plugs of holes, and the plugs are evacuated to a receptacle. C... | 10/19/1999 |
| 5860905 | System and method for making plastic film bags with headers, open mouths and sealed bottoms A system for receiving tubular formed film comprising two facing walls and forming plastic bags having headers, open mouths and sealed bottoms into a block or stack of bags. The system includes an opener means for severing a spaced perforation on only one... | 01/19/1999 |
| 5672235 | Plastic film stripper apparatus and method for heated sealing apparatus A sideweld bag making has a reciprocating seal bar and a roller. Drive rolls upstream of the seal bar moves a web in steps over the roller and seal bar seals and severs the web to form bags. A cooling plate between the drive rolls and sealing bar includes... | 09/30/1997 |
| 5667468 | Screw adjustable wicket pins A sideweld bag making machine utilizing a rotary transfer device and wicket conveyer is equipped with screw adjustable transfer wicket pins. The bases for the transfer wicket pins are mounted on a threaded rod having two sections of thread, each of opposi... | 09/16/1997 |
| 5630779 | Easy-open bag pack, method of forming and system A system for suspending a pack of thermoplastic bags, loading bags, removing loaded bags and for automatically opening the next bag preparatory to loading it by having a pack of handled bags suspended from laterally spaced elongated rods of a rack. A nove... | 05/20/1997 |
| 5626550 | Easy dispense T-shirt bags A bag pack comprises a plurality of easy open handle bags. The bags are easy to open because the exterior surfaces of the bags are cold-welded together so that when one bag is pulled from the pack, the adjacent next bag is at least partly open. The extern... | 05/06/1997 |
| 5562580 | Self-opening polyethylene bag stack and process for producing same The invention provides self-opening polyethylene film bag stacks which do not require a separate adhesive layer between adjacent bags. The self-opening bag stack according to the invention preferably include a plurality of stacked t-shirt type high densit... | 10/08/1996 |
| 5542802 | Wicket stacking guide A sideweld bag making machine utilizing a rotary transfer device and wicket conveyer is equipped with a movable bag stacking guide that is used to align bags as they are stacked on the wicket conveyer. The bag stacking guide, which is mounted on the wicke... | 08/06/1996 |
| 5507713 | Easy-open bag pack, method of forming and system A system for suspending a pack of thermoplastic bags, loading bags, removing loaded bags and for automatically opening the next bag preparatory to loading it by having a pack of handled bags suspended from laterally spaced elongated rods of a rack. The ba... | 04/16/1996 |
| 5496251 | Method and apparatus for manufacturing a shell-shaped package, and such shell-shaped package The invention relates to a method of manufacturing shell-shaped packages, in particular flower sleeves, in which two superposed bands of synthetic material are supplied and machined through die cutting, in such a manner that at least one edge of each pack... | 03/05/1996 |
| 5484376 | Ready to load bag pack, method of forming and system A thermoplastic film bag pack where each bag has a bottom, front, rear, and gusseted side walls, an inside and outside surface and a cut-edge mouth portion. The mouth portion has double film loop handles as integral extensions of the walls at its opposite... | 01/16/1996 |
| 5421803 | Method of fabricating packs of self opening plastic bags Packs of T-shirt type plastic shopping bags are fabricated in such a manner that when the bags are mounted on conventional racks, as each bag is pulled off the rack, the front wall of the next ensuing bag is pulled out to open the bag for the depositing o... | 06/06/1995 |
| 5377570 | Apparatus for perforating plastic film saddle bags An apparatus and method for perforating a plastic film fleader section connecting together a plurality of plastic film bags and forming a pack of saddle bags. The saddle bags are carried on a block with the header on the block and the bags draped thereove... | 01/03/1995 |
| 5376219 | High speed apparatus for forming foam cushions for packaging purposes A sealing and severing apparatus is disclosed for sealing plastic bags formed in succession from stock plastic film material and then severing the sealed bags from one another. The bags are filled with a foamable composition while they are being formed so... | 12/27/1994 |
| 5338281 | Wicket servo method and device in a bag making machine This invention relates to a method and device for manufacturing plastic bags by transversely cutting and sealing a plastic web at spaced locations and, more particularly, to a method and device for operating a stacking device by means of a servo-motor. Th... | 08/16/1994 |
| 5282778 | Method for making bags of synthetic material A method for making bags of synthetic material in which a tubular foil web of synthetic material is advanced in steps corresponding to the length of one bag. A continuously heated pair (11) of welding jaws grips the tubular foil web (3) of synthetic mater... | 02/01/1994 |
| 5226858 | Method and apparatus for producing bags interconnected at their open ends A method and apparatus for producing bags interconnected at their open ends by forming transverse seals across a flattened longitudinal tube of film material and utilizing a cutting die to cut a transverse weakened line across the tube intermediate the tr... | 07/13/1993 |
| 5205808 | Method and apparatus for making interfolded boxed bags An interfolded boxed bag arrangement and method and apparatus for making the same from plastic tube or sheeting stock. Plastic tubular or sheeting stock is unwound off two rolls under tension. The stock proceeds to various stations where it is cut into ba... | 04/27/1993 |
| 5185987 | Apparatus for transferring stacks of flexible products An apparatus for transferring stacks of flexible products is disclosed including a flat plate base support structure having a top and bottom; at least a first pair of clamping means releasably attached to the top of the support structure for clamping a fi... | 02/16/1993 |
| 5155967 | Automated bag manufacturing and packaging system An apparatus for the continuous packaging of flexible bags is adapted for use with a continuous bag manufacturing machine. Separate bags are received on a conveyor which conveys the bags to a stacking station at the end of the conveyor. At the stacking st... | 10/20/1992 |
| 5135460 | Apparatus for controlling machines for making bags or sacks A machine for forming stacks of bags from a web of synthetic thermoplastic material has feeding rollers for feeding the web to welding jaws which form transverse welds in the web. There is a first motor for operating the feeding rollers and a second motor... | 08/04/1992 |
| 5125887 | Device for the accumulation of sheet material articles downstream of the machine which produces them Downstream of the welding and cutting bars (14, 16), a crosspiece (18) interacts with two pressure elements (20, 34) which act alternately in order to retain the manufactured articles on said crosspiece, engaging in each cycle the new manufactured article... | 06/30/1992 |
| 5112289 | Device for transverse cutting and welding of webs In a device for transversely welding and cutting tubular film into bags, feed rolls advance the film to a gripping rail which grips the leading end of the film during operation of cutting and welding devices located behind the gripping rail in the directi... | 05/12/1992 |
| 5087234 | Method of forming an easy-open bag pack A system for suspending a pack of thermoplastic bags, loading bags, removing loaded bags and for automatically opening the next bag preparatory to loading it by having a pack of handled bags suspended from laterally spaced elongated rods of a rack. The ba... | 02/11/1992 |
| 5085111 | Apparatus for stacking flat articles An apparatus is provided for stacking flat articles, such as double bags, which have been severed by hot-wire welding from a continuous tubular or semitubular plastic film and have opening-defining edges adjacent to their center lines. The bags are delive... | 02/04/1992 |
| 5069659 | Apparatus for the production of shopping bags having reinforced handle holes An apparatus for the production of shopping bags provided with handle holes reinforced by welded-on tabs of thermoplastic synthetic resin film includes a unit for effecting cyclic stepwise advancement of film webs forming sides of each bag; a unit for pun... | 12/03/1991 |
| 5062825 | Apparatus and method for the production of flexible products An apparatus and method for making individual flexible web products whereby a web material is tucked outwardly from the surface of a product drum by fixed projections, severed and sealed, and provided to one or more transfer points. The products are there... | 11/05/1991 |
