| 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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| 10/29/1991 | CA1291309C Device for sealing and perforating a thermoplastic film |
| 10/23/1991 | EP0453408A1 Device for sealing a closing strip having two parts between two thermoplastic webs |
| 10/22/1991 | US5059036 Vented pouch arrangement and method |
| 10/22/1991 | CA1291079C Stack of bags and process and apparatus for manufacturing the same |
| 10/21/1991 | CA2040587A1 Apparatus for heat-sealing a thermoplastic packaging bag |
| 10/15/1991 | US5057065 Process for making draw tape bags with integrally formed draw tapes |
| 10/15/1991 | US5056202 Apparatus for making and transporting stacks of foil sections |
| 10/15/1991 | CA1290534C Apparatus for attaching a fitment to a web of film |
| 10/09/1991 | EP0450958A2 Easy-open recloseable package |
| 10/09/1991 | EP0450114A1 Method of manufacturing portable packaging bags with a folded top portion out of plastic material |
| 10/09/1991 | EP0449953A1 Collapsible bag with evacuation passageway and method for making the same |
| 10/08/1991 | US5054619 Side opening flexible bag with longitudinally oriented carrying handle secured to side panels |
| 10/02/1991 | EP0448819A1 Method and device for forming stacks of bags which are held together with clamps |
| 10/02/1991 | EP0245369B1 Reclosable flexible container |
| 10/02/1991 | DE4009655A1 Forming stacks from sequentially supplied bags - thrusts second stacking pin head onto pin behind last bag in stack |
| 09/27/1991 | CA2037554A1 Process and apparatus for forming stacks of bags held together by clamps |
| 09/24/1991 | US5050812 Dual-envelope making machine and method of using |
| 09/20/1991 | CA2037474A1 Easy-open bag pack, method of forming and system |
| 09/17/1991 | CA1288987C Machine for production of containers |
| 09/10/1991 | US5047000 Attachment for forming envelopes |
| 09/05/1991 | DE4105694A1 Wiederverwendbarer flexibler behaelter fuer fluessigkeiten und maschine zu dessen herstellung A reusable flexible container for liquids and machine manufacturing to its |
| 09/03/1991 | US5045042 Plastic film bag with integral plastic film tie element, and associated fabrication methods |
| 09/03/1991 | US5044775 Plastic film bag with integral plastic film tie element, and associated fabrication methods |
| 08/21/1991 | EP0442292A1 Flexible pouch with folded spout |
| 08/20/1991 | US5041072 Method of making flapped envelope with peel-off strip for band of pressure-sensitive adhesive |
| 08/20/1991 | US5041070 Intermittent web feed apparatus |
| 08/20/1991 | CA1287718C Method and apparatus for applying extruded profile and adjacent ribs to a traveling film web |
| 08/14/1991 | EP0441131A1 Process and apparatus for feeding a web to a working machine, in particular a packaging machine |
| 08/13/1991 | CA2035628A1 Flexible pouch with folded spout |
| 08/04/1991 | CA2034786A1 Process and apparatus for feeding a web of material to a processing machine, especially a packaging machine |
| 07/31/1991 | WO1990008788A1 N,n-dialkylaminoalkyl(meth)acrylamide composition having improved preservability |
| 07/30/1991 | US5035165 Quick slip holder for bag machine |
| 07/25/1991 | WO1991010604A1 Collapsible bag with evacuation passageway and method for making the same |
| 07/09/1991 | US5030191 Device for depositing and stacking bags produced from synthetic resin films and having a bottom seam |
| 07/09/1991 | US5030189 Method of making envelope with tear line formed by ultrasonic energy |
| 06/26/1991 | EP0298107A4 Method of making and filling bags |
| 06/25/1991 | US5026340 Flap closer |
| 06/25/1991 | US5026339 Sheet plastic check valve technique |
| 06/25/1991 | US5026174 Plastic film bag with special flap arrangement |
| 06/25/1991 | CA1285203C Method and apparatus for making reclosable bags in a form, fill and seal machine |
| 06/18/1991 | US5024645 Apparatus for positioning a port in an aperture in a web of film |
| 06/18/1991 | US5024642 Rotary draw tape bag making apparatus and method |
| 06/18/1991 | US5024537 Tape carried pre-cut zipper |
| 06/16/1991 | WO1991008962A1 Side opening flexible bag with longitudinally oriented carrying handle secured to side panels |
| 06/12/1991 | EP0432114A1 Bag made of thermoplastic film with annular string |
| 06/11/1991 | US5022298 Rotary handle cutout with heated knife |
| 05/29/1991 | EP0428679A1 Apparatus and method for positioning a port in an aperture in a web or film. |
| 05/16/1991 | DE3937175A1 Machine for making plastics carrier bags - uses flattened tube inflated and re-folded after printing |
| 05/07/1991 | US5013004 Suspension pack and apparatus for producing suspension packs |
| 05/02/1991 | DE4034044A1 Automatic prodn. of plastic bags - machine is operated by computer-controlled system in which each function is performed by servo-motor receiving set number of impulses |
| 05/02/1991 | DE3936228A1 Strengthening film carrier bags - by applying strips coated one side with hot melt adhesive by festooning and passing over bottom of doctored roller with adhesive tank on top |
| 04/24/1991 | EP0424361A2 Fluid-flow restricting devices, in particular for manufacturing bags made of flexible material, in particular of plastic |
| 04/24/1991 | EP0423481A1 Delivery device for bags with a glued bottom |
| 04/23/1991 | US5009740 Bag making machine |
| 04/23/1991 | US5009632 Method and device for joining foil hoses |
| 04/23/1991 | US5009517 Plastic film bag with integral plastic film tie element, and associated fabrication methods |
| 04/18/1991 | WO1991004918A1 Bag handle |
| 04/16/1991 | CA1283133C Apparatus for stacking flat articles, preferably of double bags made ofplastic film |
| 04/09/1991 | US5006186 Manufacturing method of square bottom bags |
| 04/03/1991 | EP0419813A1 Control device for machines for making bags |
| 03/26/1991 | US5002522 Apparatus for controlling machines for making bags or sacks |
| 03/26/1991 | CA2026099A1 Apparatus for controlling machines for making bags or sacks |
| 03/19/1991 | US5000728 Method of and apparatus for stacking bag segments |
| 03/19/1991 | US5000727 Servo driven draw roll for bag machine |
| 03/19/1991 | US5000725 Bi-directional registration of servo indexed webs |
| 03/13/1991 | EP0416063A1 Bag with handles cut out from a reinforced region, process and installation for the production of such bag. |
| 03/12/1991 | US4998990 Collapsible bag with evacuation passageway and method for making the same |
| 03/05/1991 | US4997504 Method and apparatus for high speed pouch and bag making |
| 02/20/1991 | CN1011685B Apparatus for the piling up of bags made of thermoplastic film in order to form a pile of them during production |
| 02/19/1991 | US4994137 Bag making machine sealer slitter apparatus |
| 02/19/1991 | US4994128 Method for manufacturing film rolls |
| 02/06/1991 | EP0411659A2 Plastic film bag manufacturing apparatus and associated method |
| 02/06/1991 | EP0411007A1 Polymeric film material and its production |
| 02/05/1991 | US4989994 Nested plastic bags and method of manufacture |
| 02/05/1991 | US4989772 Automatic file feed register device |
| 02/05/1991 | CA1279785C Process for making t-shirt bags |
| 02/05/1991 | CA1279784C Device for positioning fitments in a perforated film and perforated film equipped with parts or fittings |
| 01/30/1991 | EP0410126A1 Method of and apparatus for making reclosable bags and plastic film material used therefor |
| 01/28/1991 | CA2018436A1 Reclosable bag material, method and apparatus |
| 01/24/1991 | DE3923235A1 Cross-welding and perforating continuously moving double plastic film - has upper and lower welding tools with perforating knife which rotate around axes at speeds related to film speed |
| 01/23/1991 | EP0408766A1 N,n-dialkylaminoalkyl(meth)acrylamide composition having improved preservability |
| 01/22/1991 | US4986806 Gusset tubing former |
| 01/22/1991 | US4986804 Method for forming angular seals in side-gussetted bags |
| 01/20/1991 | CA2018390A1 Embossed closure profile and associated container |
| 01/15/1991 | CA1279038C Attachment of plastic zipper to incompatible bag wall web |
| 01/08/1991 | US4983088 Apparatus for stacking flat workpieces on stacking pins or an endless conveying element |
| 01/02/1991 | CA1278585C Apparatus for withdrawing a stack of bags of plastic film from a partly overlying stack as the latter is built up |
| 01/01/1991 | US4981463 Device for positioning fitments in a perforated film |
| 12/19/1990 | EP0402356A1 Fluid container, ports therefor and method of production |
| 12/18/1990 | US4978232 Flexible pouch with folded spout |
| 12/11/1990 | US4976811 Apparatus for sealing film including sealing head with wedge-shaped lower-portion |
| 12/11/1990 | US4976674 Bag and method of making the same |
| 12/11/1990 | CA1277476C Device for the sealing of a port or fitment to a thermoplastic film |
| 12/06/1990 | DE3917809A1 Stacking device for plastics bags - consists of vertical slider which presses bags onto spikes attached to conveyor belt |
| 12/04/1990 | CA1277344C Sheet stacking and transferring device |
| 11/28/1990 | EP0399938A1 Method and device for applying a gripping and/or pouring handle to a sachet made from flexible synthetic material and sachet so obtained |
| 11/28/1990 | EP0270586B1 Device for welding a mouth piece to a thermoplastic film |
| 11/27/1990 | WO1990014217A1 Apparatus and method for positioning a port in an aperture in a web or film |
| 11/27/1990 | CA1276871C Holder for a panel cutting plate |
| 11/22/1990 | EP0398731A2 Method of producing a sealing system foe a reclosable film wall package, and system made by such a method |