| Patents for B31B 19 - Machinery characterised by making rectangular envelopes or bags of flat form, i.e. without structural provision at the base for thickness of contents (4,853) |
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| 10/31/1989 | US4876842 Method of and apparatus for packaging product masses in a form, fill and seal machine |
| 10/25/1989 | EP0338747A1 Polymeric film material and its production |
| 10/25/1989 | EP0338000A1 Bag with drawing string of thermoplastic plastic foil and process for producing same |
| 10/24/1989 | CA1262419A1 Method and apparatus for producing drawstring bags |
| 10/19/1989 | DE3811020A1 Method and device for the delivery and stacking of bags made of thermoplastic synthetic (plastic) film |
| 10/18/1989 | EP0337341A1 Process and apparatus for cutting and sealing multiple plies of thermoplastic material having thickened sections |
| 10/18/1989 | EP0337039A1 Machine for handling flat articles, particularly small paper bags, at the exit of a production machine |
| 10/17/1989 | US4874257 Method of forming a closed filled bag, a bag construction and an apparatus for forming the bag |
| 10/10/1989 | US4872935 Apparatus and method for bonding a plastic container and spout |
| 09/28/1989 | DE3808764A1 Depositing device for plastic bags |
| 09/26/1989 | CA1261663A1 Method and apparatus for producing bags |
| 09/26/1989 | CA1261367A1 Apparatus for stacking flat articles provided with two locating holes, preferably bags made of plastic film |
| 09/19/1989 | US4867736 Agricultural storage bag folding apparatus and method |
| 09/14/1989 | DE3824753A1 Bag, method for its manufacture, and device for manufacturing bags |
| 09/14/1989 | DE3807342A1 Tying apparatus, in particular having a plurality of mechanically operated knotting devices for tying the ends of pull cords, for example for plastic bags |
| 09/14/1989 | DE3807341A1 Apparatus for producing plastic bags |
| 09/05/1989 | US4863287 Waxed bag with wax-free area |
| 09/05/1989 | US4863285 Manufacture of bags |
| 08/29/1989 | US4861170 Portable container |
| 08/24/1989 | DE3803148A1 Gusseted bag with integrated handle, and method and device for producing gusseted bags with an integrated handle |
| 08/23/1989 | EP0328672A1 Roll film and method of manufacturing same |
| 08/22/1989 | US4859259 Process and apparatus for reclosable container stock |
| 08/08/1989 | US4854928 Method and apparatus for transferring and bundling plastic bag sheet material |
| 08/08/1989 | US4854735 Plastic film bag with integral plastic film tie element, and associated fabrication methods |
| 07/25/1989 | US4850944 Hot air hem sealer heat exchanger |
| 07/25/1989 | US4850781 Zero cycle interrupt wicket stacker |
| 07/18/1989 | US4849040 Method and apparatus for high speed pouch and bag making |
| 07/18/1989 | US4848928 Package with reclosable fin and method |
| 07/18/1989 | CA1257569A1 Bag and method of manufacturing the same |
| 07/04/1989 | US4844759 Method of and means for applying reclosable fasteners to plastic film |
| 06/29/1989 | WO1989005967A1 Control and detection circuitry for mass airflow sensors |
| 06/29/1989 | DE3742994A1 Device for collecting bags made of plastic film into a bag stack |
| 06/29/1989 | DE3742451A1 Device for the formation and removal of bag stacks on a bag machine |
| 06/08/1989 | DE3740058A1 Method and device for producing sacks, particularly paper sacks from a lay flat tube |
| 06/07/1989 | EP0319048A2 Process and apparatus for making shrinkable sleeves |
| 06/06/1989 | US4835948 Bag filling machine |
| 06/06/1989 | US4835835 Method and apparatus for making extruded separable fastener with reactivatable adhesive |
| 05/30/1989 | US4834697 Driven guide roller indexing system |
| 05/23/1989 | US4832768 Method of forming plastic fastener and plastic accessory strips and uniting the same with a film |
| 05/23/1989 | US4832677 Method and apparatus for producing draw tape bags |
| 05/23/1989 | US4832505 Tamper evident link bags |
| 05/18/1989 | WO1989004280A1 Fluid containers and ports therefor |
| 05/10/1989 | EP0315176A2 Plastic film bag with integral plastic film tie element and associated fabrication methods |
| 05/03/1989 | EP0314466A2 Continuous draw tape bags and method for making |
| 05/02/1989 | US4826476 Apparatus for stacking flat articles, preferably double bags made of plastic film |
| 05/02/1989 | US4826475 Sealing machine for glue-coated material in sheets |
| 04/25/1989 | US4824425 Web hem method and apparatus for insuring a flat hem in a web |
| 04/25/1989 | US4823659 Holder for a panel cutting plate |
| 04/25/1989 | CA1253179A1 Apparatus for stacking flat articles, preferably bags made of plastic film |
| 04/18/1989 | US4822437 Method and apparatus for making non-roping thermoplastic draw tape for thermoplastic bags |
| 04/11/1989 | US4820254 Clamp for bag producing machine |
| 04/11/1989 | US4820252 Method and apparatus for forming a pair of hems in superposed layers of a moving thermoplastic film web |
| 04/11/1989 | US4820251 Web notching control apparatus |
| 04/11/1989 | US4820249 Multiple seam forming apparatus for continuously running webs |
| 04/06/1989 | DE3731903A1 Dispatch envelope made of paper |
| 04/04/1989 | US4818328 Process for manufacturing sacks, bags, and the like |
| 04/04/1989 | CA1252060A1 System for serially conveying discrete flexible articles |
| 03/28/1989 | US4817188 Bag with separate attached zipper and method of making |
| 03/28/1989 | US4816104 Methods and systems for preparing flat-bottom thermoplastic sack |
| 03/22/1989 | EP0307734A2 Machine for producing bags, sacks or similar packagings from a flexible thermoplastic synthetic foil |
| 03/14/1989 | US4812192 Process and apparatus for cutting and sealing multiple plies of thermoplastic material having thickened sections |
| 03/14/1989 | US4812074 Apparatus for making bag material |
| 03/14/1989 | CA1251179A1 Thermoplastic bag, method and system for its manufacture |
| 02/28/1989 | US4808150 Oven-heated hot wheel sealing apparatus |
| 02/28/1989 | US4808099 Apparatus for making tubular film with transverse closure strips |
| 02/22/1989 | EP0303732A2 Method for making a web of interconnected bags |
| 02/22/1989 | EP0303726A1 Method for making a half tube web |
| 02/21/1989 | US4807300 Plastic zipper bag with anchor-socket attachment arrangement |
| 02/21/1989 | CA1250172A1 Method for preparing flat-bottom thermoplastic sack |
| 02/09/1989 | WO1989000967A1 Roll film and method of manufacturing same |
| 02/08/1989 | EP0302191A1 Collapsible bag and method of making the same |
| 02/07/1989 | US4802582 Continuous draw tape bags |
| 01/31/1989 | CA1249471A1 Methods for preparing flat-bottom thermoplastic sack and systems therefore |
| 01/24/1989 | CA1249252A1 Easy open and reclosable package and apparatus for making same |
| 01/24/1989 | CA1249158A1 Reinforced plastic bag |
| 01/18/1989 | EP0245369A4 Reclosable flexible container. |
| 01/17/1989 | US4798576 Bag making machine |
| 01/17/1989 | US4798574 Method of making a bag with a barrier material |
| 01/17/1989 | US4798572 Collapsible bag and method |
| 01/17/1989 | CA1248867A1 Web cutting method and apparatus |
| 01/11/1989 | EP0298107A1 Method of making and filling bags |
| 01/10/1989 | US4796499 Apparatus for stacking and delivering flat articles, such as double bags made of plastic film |
| 01/05/1989 | DE3721335A1 Process for producing carrier bags with longitudinally extending thickening and side gussets |
| 01/05/1989 | DE3721303A1 Process for producing carrier bags with a welded base seam |
| 01/04/1989 | EP0297814A2 Film guide system |
| 01/04/1989 | EP0297434A1 Method of controlling bag or sack production machines |
| 01/03/1989 | US4796300 Reclosable flexible container having interior and exterior closure elements interlocked on the container walls |
| 01/03/1989 | US4795412 Apparatus for forming a hem in a moving web of film |
| 01/03/1989 | CA1247910A1 Former for form, fill and seal packaging machines |
| 12/22/1988 | DE3719697A1 Vorrichtung zum stapeln von beutelabschnitten Device for stacking bags portions |
| 12/13/1988 | US4790804 Bag manufacturing apparatus |
| 12/13/1988 | US4790803 Method of making bottom gusset bag pad arrangement for liquid containers |
| 12/13/1988 | US4790670 Bag with closeable flap and method of manufacturing same |
| 12/06/1988 | US4790029 Collapsible bag with square ends formed by triangular portions |
| 12/06/1988 | US4789350 Method and apparatus for manufacturing mailing envelopes or bags |
| 12/06/1988 | CA1245961A1 Thermoplastic bag machine |
| 12/01/1988 | DE3715146A1 Appliance for making welded joints and for the cutting, perforation and/or glue-coating of web-like packing material |
| 11/29/1988 | US4787755 Reclosable flexible container having fastener profiles sealed at their ends to the outside of the bag |
| 11/24/1988 | DE3716265A1 Method and device for producing and packaging carrier bags, bags, sacks or the like which are attached to one another in the manner of a chain and are made of plastic film with a bottom weld |
| 11/22/1988 | CA1245236A1 Bag stacking method and apparatus |