| 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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| 11/22/1988 | CA1245090A1 Method for preparing flat-bottom thermoplastic sack and systems therefor |
| 11/17/1988 | EP0291168A1 Method and apparatus for producing drawtape bags |
| 11/09/1988 | CN88202224U Cutting and sealing machine for plastic bag |
| 11/08/1988 | US4783178 Method of manufacturing a web of plastic bags |
| 11/01/1988 | US4781471 Method and arrangement for producing bags, sacks or similar objects of a thermoplastic synthetic plastic foil web, and objects produced thereby |
| 10/20/1988 | EP0216800A4 Apparatus for producing flexible containers. |
| 10/13/1988 | DE3805050A1 Device for pre-folding the bag closure in packing machines |
| 10/05/1988 | EP0285265A2 Apparatus for producing paper with decorative edges |
| 10/04/1988 | US4775359 Bag and tube folding method and apparatus |
| 09/22/1988 | DE3707845A1 Stacking rig for flat items - has locating plate for front of stack and with variable angle side plates |
| 09/21/1988 | EP0282723A2 Transverse zipper bag material and method of and means for making same |
| 09/07/1988 | EP0221893A4 Fitment attachement methods in horizontal form/fill/seal machines. |
| 08/25/1988 | WO1988006092A1 Process for the manufacture of packs of plastic bags with side seams, said bags forming a block |
| 08/25/1988 | WO1988006091A1 Device for depositing and stacking plastic bags with seamed lower edges |
| 08/25/1988 | DE3704662A1 Verfahren zum herstellen von verblockten packen aus beuteln mit seitennaht Method for the manufacture of splinted unpack pouches with side seam |
| 08/17/1988 | EP0277974A1 Apparatus for sealing a web of film. |
| 08/16/1988 | US4764160 Cutting apparatus for a machine used for making bags, pouches and the like from thermoplastic material |
| 08/16/1988 | US4764030 Part bottom seal of chain of gusseted bags and machine therefor |
| 08/11/1988 | DE3702391A1 Device for the intermittent feeding of packaging material to a bag-forming machine |
| 08/10/1988 | EP0277268A1 A holder for a panel cutting plate |
| 08/09/1988 | US4762514 Method of making beverage packaging bag |
| 08/03/1988 | EP0277037A1 Method and apparatus for folding an elongate bag |
| 08/03/1988 | EP0276554A2 Bag with resealable closure and a method of manufacturing same |
| 08/02/1988 | US4761197 Apparatus for sealing a web of film |
| 08/02/1988 | US4760684 Bags |
| 07/28/1988 | WO1988005383A1 Method of making and filling bags |
| 07/27/1988 | EP0275396A1 Apparatus for making reclosable bags in a form, fill and seal machine |
| 07/26/1988 | US4759743 For securing a handle formed by loop of a string |
| 07/26/1988 | US4759742 Process of making T-shirt bags |
| 07/19/1988 | US4758214 Twin wicketing bag machine |
| 07/12/1988 | US4756628 Reclosable flexible container having a downwardly depending cuff |
| 07/07/1988 | DE3643503A1 Sack bzw. beutel aus thermoplastischer kunststoffolie mit einem zugband Bag or bags from thermoplastic film with a drawstring |
| 06/30/1988 | WO1988004636A1 Bag with drawing string of thermoplastic plastic foil and process for producing same |
| 06/30/1988 | WO1988004635A1 Bag of thermoplastic plastic foil with drawing string and process for producing same |
| 06/30/1988 | WO1988004634A1 Reclosable flexible container |
| 06/28/1988 | US4753629 For thermally bonding lengths of thermoplastic film |
| 06/15/1988 | EP0270586A1 Device for welding a mouth piece to a thermoplastic film. |
| 06/15/1988 | CN86204493U Sack with pleat |
| 06/01/1988 | EP0268626A1 Device for setting in place mouthpieces through a perforated film and perforated film fitted with mouthpieces. |
| 05/31/1988 | CA1237394A1 Detachable plastic bag pad and process for making same |
| 05/25/1988 | EP0267937A1 Device for welding and perforating a thermoplastic film backfolded on itself. |
| 05/24/1988 | US4745835 Fine tooth perforation for webs |
| 05/24/1988 | US4745727 Device serving to fashion carrying handles for attachment to sheet wrapping material, and a handle obtained with such a device |
| 05/24/1988 | CA1237009A1 Apparatus for making plastic carrier bags |
| 05/18/1988 | EP0267706A1 Bag bundles and method of and apparatus for manufacture |
| 05/11/1988 | EP0266575A1 Method and device for the breaking of partly cut and the subsequent stacking of flat objects, preferably double bags, made from plastic |
| 05/05/1988 | DE3732437A1 Stapelvorrichtung fuer gegenstaende Stacking device for belongings |
| 05/03/1988 | US4741789 Apparatus and process for forming and applying a profile and adjacent rib-type zipper to a traveling film web |
| 05/03/1988 | US4741525 Apparatus for conveying flat articles provided with two locating holes preferably bags made of plastic film |
| 04/27/1988 | EP0265019A2 Apparatus and process for forming and applying a profile and adjacent rib-type zipper to a traveling film web |
| 04/27/1988 | EP0264950A2 Thermoplastic bag and method and apparatus for the continuous production of this bag from a tubular sheet material |
| 04/21/1988 | DE3634238A1 Process for producing a carrier bag, and a carrier bag of thermoplastic sheeting |
| 04/13/1988 | EP0263724A2 Method and apparatus for transferring and bundling plastic bag sheet material |
| 04/12/1988 | US4737904 Standard-length positioning apparatus |
| 04/05/1988 | US4735602 Bag stacking method and apparatus |
| 04/05/1988 | US4735601 Device serving to fashion carrying handles for attachment to sheet wrapping material |
| 03/29/1988 | US4734148 Process for making a detachable plastic bag pad |
| 03/29/1988 | US4734142 Bag sealing device |
| 03/29/1988 | US4734088 Apparatus for making bags |
| 03/22/1988 | US4731911 Extruded closure strip carrying reactivatable adhesive layer |
| 03/15/1988 | US4730943 Plastic bag with carrying handle |
| 03/15/1988 | CA1234084A1 Method and apparatus for producing bag-shaped packages with cap body and content |
| 03/10/1988 | DE3629852A1 Carrier bag made of thermoplastic film |
| 02/25/1988 | DE3628070A1 Mail letter forming from printed sheet - involves sheet cutting, adhesive strip application, folding, and perforating next to adhesive strip |
| 02/24/1988 | EP0256791A2 Package for microwaveable popcorn, method for production of the package, and apparatus for sealing the package |
| 02/24/1988 | EP0256375A1 Method and apparatus for the production of a stack of bags |
| 02/16/1988 | US4725262 Process and apparatus for the manufacture of a valved sack with self-sealing valve |
| 02/11/1988 | WO1988000885A1 Apparatus for sealing a web of film |
| 02/11/1988 | WO1987007212A3 Device for welding and perforating a thermoplastic film backfolded on itself |
| 02/11/1988 | WO1987007211A3 Device for setting in place mouthpieces through a perforated film and perforated film fitted with mouthpieces |
| 02/11/1988 | WO1987007205A3 Device for welding a mouth piece to a thermoplastic film |
| 02/10/1988 | EP0255540A1 An apparatus for attaching a fitment to a web of film. |
| 02/09/1988 | US4723654 Apparatus for conveying a stack of bags |
| 02/04/1988 | DE3622968A1 Process and device for the continuous production of packaging bags |
| 01/26/1988 | US4721503 Agricultural storage bag folding apparatus and method |
| 01/26/1988 | US4721502 Apparatus for sealing a hem in a moving web of film |
| 01/26/1988 | US4721501 Apparatus for producing a machine-direction heat seal |
| 01/26/1988 | US4721396 Bag and method of manufacturing the same |
| 01/21/1988 | EP0181873A4 Easy open and reclosable package and apparatus for making same. |
| 01/14/1988 | DE3622912A1 Carrier bag made of thermoplastic film |
| 01/14/1988 | DE3249745C2 Device for the continuous production of bag-shaped containers or the like from thermplastic web material |
| 01/05/1988 | US4717373 Apparatus for sealing a hem in a moving web of film using angularly oriented hot wheels |
| 01/05/1988 | US4717372 Apparatus for producing a machine-direction intermittent heat seal |
| 12/22/1987 | US4714455 Hem folder with integral tape inserter for making draw tape bags |
| 12/22/1987 | US4714454 Apparatus for producing machine-direction heat seals |
| 12/15/1987 | CA1230317A1 Quadruple profile tubing |
| 12/15/1987 | CA1230252A1 Method and apparatus for manufacturing draw tape bags |
| 12/03/1987 | WO1987007212A2 Device for welding and perforating a thermoplastic film backfolded on itself |
| 12/03/1987 | WO1987007211A2 Device for setting in place mouthpieces through a perforated film and perforated film fitted with mouthpieces |
| 12/03/1987 | WO1987007205A2 Device for welding a mouth piece to a thermoplastic film |
| 12/02/1987 | CN86104300A Manufacturing method for the bag with pleats |
| 12/01/1987 | US4710157 Former for form, fill and seal packaging machine |
| 12/01/1987 | US4709533 Method and apparatus for making reclosable bags in a form, fill and seal machine |
| 12/01/1987 | US4709528 Apparatus for producing bag packages having dispensing fitments |
| 11/26/1987 | DE3716010A1 Method for producing a valve bag |
| 11/26/1987 | DE3715982A1 Device for producing a valve on a bag blank |
| 11/24/1987 | US4709398 Chain bags, method and apparatus |
| 11/24/1987 | US4708705 Reinforced plastic bag |
| 11/19/1987 | EP0245654A2 Method for making so-called shirt bags |
| 11/19/1987 | EP0245424A1 Sealing machine for glue-coated material in sheets. |