| 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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| 03/03/1981 | US4253383 Labelled fabric, a method and an arrangement for making a labelled fabric |
| 02/24/1981 | US4252233 Plastic bag-wicketing pin adjustment apparatus |
| 02/11/1981 | EP0023817A1 Form-fill-seal apparatus and method of making reclosable bags |
| 02/10/1981 | US4249982 Apparatus for making reclosable bags |
| 01/28/1981 | EP0023117A1 Improvements in or relating to machine drive systems |
| 01/27/1981 | US4246868 Envelope machine gum box |
| 01/20/1981 | US4246062 Apparatus for attaching a fitment to a pouch |
| 01/07/1981 | EP0021463A1 Method of producing a web of a plurality of interconnected plastics bags |
| 01/06/1981 | US4243449 Process for sealing a plurality of polybutylene sheets |
| 12/30/1980 | US4241865 Reclosable shipping sack and method |
| 12/23/1980 | US4240336 Bag making machine |
| 12/02/1980 | US4236482 Apparatus for applying sealing material to envelopes |
| 11/25/1980 | US4235653 Method for making reclosable bags |
| 11/18/1980 | US4233931 Envelope feed apparatus |
| 11/11/1980 | US4232592 Envelope forming machine and method |
| 11/04/1980 | US4231558 Apparatus for accumulating articles such as bags |
| 10/28/1980 | US4230029 Cutting assembly useful in bag machines |
| 10/21/1980 | US4228728 Method and apparatus for removing gussets from flat tubes |
| 10/02/1980 | WO1980002018A1 Apparatus for attaching a fitment to a pouch |
| 09/23/1980 | US4223596 Apparatus for converting blanks into envelopes |
| 09/09/1980 | US4221321 Paperbag having articulated handle |
| 09/02/1980 | CA1084824A1 Method of and means for making variable width zipper profile film |
| 08/20/1980 | EP0014246A1 Method for orderly depositing, storing and distributing singular flat objects, particularly plastic bags |
| 08/12/1980 | US4216705 Apparatus for making carrier bags from two half-tubes running side-by-side |
| 08/05/1980 | CA1082967A1 Apparatus for producing bags of plastics material |
| 07/01/1980 | US4210480 Steam seal of bag ply |
| 06/17/1980 | US4207983 Packeting net bags |
| 06/17/1980 | US4207667 Method and apparatus for automatic sheet cutting and stacking |
| 05/20/1980 | CA1077758A1 Flexible envelopes |
| 05/06/1980 | CA1076868A1 Piercing blade temperature control |
| 04/15/1980 | US4198260 Apparatus for severing a stack of filmlike sections and simultaneously forming them into blocks |
| 04/01/1980 | CA1074735A1 Nozzle outlet in the stretchable flexible wall for a container |
| 04/01/1980 | CA1074510A1 Plow folding and heat sealer apparatus for continuous business forms |
| 03/11/1980 | US4192705 Indexing roll drive system |
| 02/12/1980 | CA1071663A1 Apparatus for storing articles discharged at a high rate from production machines |
| 02/06/1980 | EP0007443A1 Bag folding machine |
| 01/15/1980 | US4183515 Bag folding machine |
| 01/09/1980 | EP0006342A1 Device and method for folding self-sealing envelope flaps |
| 01/08/1980 | US4182222 Coupon confining bag method |
| 12/18/1979 | CA1068239A1 Plastic shopping bag having a reinforced handle portion, and method of fabricating the same |
| 12/12/1979 | EP0005776A1 Device for making plastic bags provided with press-button-like closure strips |
| 12/04/1979 | CA1067324A1 Plastics bags production |
| 11/27/1979 | US4175994 Sealing, cutting |
| 11/27/1979 | US4175478 Expansible gusset envelope and method and apparatus for fabricating same |
| 11/20/1979 | US4174657 Method of forming a plastic shopping bag having a reinforced handle |
| 11/20/1979 | US4174597 Process for wrapping articles and providing reclosable container |
| 10/17/1979 | EP0004749A2 Bag folding apparatus |
| 10/16/1979 | US4170927 Apparatus for depositing lengths of foil material |
| 10/16/1979 | CA1064443A1 Method for fixing a handle to a package and package resulting from said method |
| 09/11/1979 | CA1062207A1 Reclosable plastic bag construction made from a one piece extrusion |
| 09/04/1979 | US4166570 Package with handle |
| 09/04/1979 | US4166412 Apparatus for manufacturing plastic bags with connection nipples |
| 09/04/1979 | CA1061705A1 Cutting device |
| 08/21/1979 | CA1060852A1 Flexible wall container |
| 08/14/1979 | US4164170 Method of making bags |
| 07/25/1979 | EP0003068A1 Faulty window construction detecting apparatus |
| 02/27/1979 | CA1049461A2 Self-standing bag |
| 02/20/1979 | US4140046 Piercing blade temperature control |
| 02/20/1979 | CA1048834A1 Self-standing bag and production thereof |
| 02/13/1979 | US4138934 Envelope forming assemblies |
| 02/13/1979 | US4138933 Apparatus for gumming and folding open end envelopes |
| 02/13/1979 | US4138932 Process for producing reclosable bags |
| 01/30/1979 | US4137528 Faulty window construction detecting apparatus |
| 01/30/1979 | US4136591 Apparatus for changing the length of envelope blanks cut from a continuous web |
| 01/16/1979 | US4134322 Use of microencapsulated glue in the manufacture of envelopes |
| 01/16/1979 | CA1046214A1 Method and apparatus for making profile sheets |
| 01/09/1979 | US4133252 Method and apparatus for securing carrying handles to bags |
| 01/02/1979 | CA1045436A1 Bag-making apparatus and process for making ported bags |
| 12/26/1978 | US4131503 Bag-making machine |
| 12/19/1978 | US4130039 Cutting device |
| 12/19/1978 | CA1044624A1 Containers for bulk granular materials |
| 12/05/1978 | US4128049 Apparatus for manufacture of pad stacked bags or the like |
| 11/28/1978 | US4126948 Envelope drying machine |
| 11/21/1978 | US4126085 Method of producing a reclosable bag |
| 11/21/1978 | US4125985 Spunbonded olefin, thermoplastic |
| 11/21/1978 | CA1042699A1 Envelope making apparatus |
| 11/14/1978 | US4125220 Plastic shopping bag having a reinforced handle portion |
| 11/07/1978 | CA1041815A1 Sealing-cutting mechanism |
| 10/17/1978 | US4120716 Method of applying printed labels to flexible envelopes using corona discharge treatment |
| 10/10/1978 | US4118912 Method of securing a commodity in a plastic bag |
| 10/03/1978 | US4117771 Apparatus for forming bundles of flattened bags |
| 08/15/1978 | US4106432 Apparatus for applying chemicals to envelopes |
| 08/15/1978 | US4106431 Gum applicator |
| 08/15/1978 | US4106395 Method and apparatus for producing stacks of folded bags |
| 08/15/1978 | CA1036404A1 Process and apparatus for forming sealed liquid filled bags |
| 08/08/1978 | US4105489 Apparatus for making bottom seal thermoplastic bags |
| 07/18/1978 | US4101363 Method of making bottom seal thermoplastic bags |
| 07/18/1978 | US4101355 Method of and means for making variable width zipper profile film |
| 06/20/1978 | US4095392 Device for stacking and retaining in a stack flat goods, particularly plastic bags |
| 06/13/1978 | US4094729 Reclosable thin plastic |
| 05/16/1978 | US4089729 Apparatus for manufacturing plastic bags in a continuous way |
| 04/04/1978 | US4082261 Machine for the manufacture of objects of sheet shape |
| 03/07/1978 | US4077307 Manufacturing apparatus for fabricating a disposable crust rolling form |
| 03/07/1978 | US4077306 Bag machine cycle interrupt |
| 02/28/1978 | US4076121 Reinforced thin wall plastic bag, and method and apparatus to make material for such bags |
| 02/14/1978 | US4073223 Bag slow down |
| 01/24/1978 | US4069748 Method of forming a nozzle outlet in the stretchable flexible wall for a container |
| 12/20/1977 | US4063990 Ultrasonic welding |
| 12/20/1977 | US4063693 Apparatus for storing articles discharged at a high rate from production machines |
| 12/13/1977 | US4062271 Apparatus for stacking bags |