| Patents for B31B 39 - Machinery characterised by making lined envelopes or bags (549) |
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| 05/09/1986 | WO1986002619A1 Isothermic package |
| 02/26/1986 | CN85201584U Ribbed reinforced paper bag for package and its special installation |
| 11/05/1985 | US4551125 Apparatus for making multi-walled plastic bags |
| 10/22/1985 | US4548321 Foil bag |
| 09/03/1985 | US4539236 Laminated multi-layered film enclosures |
| 08/21/1985 | EP0152199A2 Reinforced plastic bags |
| 06/11/1985 | US4522615 Method and apparatus for manufacturing an agricultural bag |
| 05/08/1985 | EP0140360A2 Machine for automatically manufacturing double bags |
| 11/21/1984 | EP0125863A1 Process for manufacturing sacks, bags, and the like |
| 11/06/1984 | US4481669 Multi-walled plastics bag |
| 10/10/1984 | EP0121041A2 Side fold bag with an upholding outer bag and a liner bag, and method for its production |
| 05/22/1984 | US4450028 Method of making laminated multi-layered film enclosures |
| 04/24/1984 | CA1166200A1 Food bags for high-temperature sterilization and process for their production |
| 01/18/1984 | EP0098322A1 Plastic bag |
| 01/03/1984 | US4424051 Method and apparatus for manufacturing an agricultural bag |
| 07/19/1983 | CA1150203A2 Multi-walled plastics bag |
| 07/06/1983 | EP0082849A1 Flexible package |
| 02/16/1983 | EP0072086A2 Method of manufacture of bags from synthetic plastics material and apparatus therefor |
| 11/25/1982 | WO1982004012A1 Flexible package |
| 08/03/1982 | CA1128845A1 Steam seal of bag ply |
| 07/20/1982 | US4340379 Reinforced container for bulk material |
| 04/27/1982 | CA1122368A1 Laminated web and process of manufacturing |
| 04/06/1982 | CA1121198A1 Multi-walled plastics bag and apparatus and process for making same |
| 06/23/1981 | US4274896 Method for making sacks which are open at one end and comprise an outer sack of woven plastics tape fabric |
| 06/16/1981 | US4273549 Process for making multi-walled plastic bag |
| 03/03/1981 | US4253892 Polypropylene and kraft paper |
| 03/03/1981 | US4253383 Labelled fabric, a method and an arrangement for making a labelled fabric |
| 11/04/1980 | US4231832 Process of manufacturing laminated web |
| 08/05/1980 | US4215626 Method and apparatus for manufacturing articles made of paper from a plurality of pre-perforated strips |
| 07/01/1980 | US4210480 Steam seal of bag ply |
| 04/01/1980 | US4196034 Method of making a pouch usable as a cup |
| 01/29/1980 | CA1070604A1 Reinforced plastic bags and method and apparatus for preparing same |
| 11/20/1979 | US4174804 Symmetrical sack with double side folds |
| 10/23/1979 | CA1064663A1 Method for manufacturing of packaging-container blanks |
| 09/05/1979 | EP0003874A2 Laminated web and process of manufacturing |
| 06/12/1979 | CA1056346A1 Multiwall pouch bags for detached packaging of commodities |
| 01/02/1979 | US4132347 Moisture proof bags provided with blow-in ports and method of manufacturing the same |
| 01/02/1979 | CA1045437A2 Method of making disposable container for bulk materials |
| 10/10/1978 | US4119452 Method of coating and cutting wrapper blanks |
| 09/19/1978 | CA1038676A1 Method of making disposable container for bulk materials |
| 08/15/1978 | US4106261 Method of forming, filling, and sealing scrim reinforced plastic bags |
| 05/09/1978 | US4088264 Multiwall pouch bags for detached packaging of commodities |
| 05/02/1978 | US4087002 Shipping bag |
| 04/04/1978 | US4082261 Machine for the manufacture of objects of sheet shape |
| 12/27/1977 | US4065049 Multi-layer bag open at one side |
| 04/05/1977 | US4015515 Apparatus for inserting liners in bags |
| 03/15/1977 | US4011798 Method of making shipping bag |
| 04/27/1976 | US3952868 Cigarette packet of laminated sheeting and method for the production thereof |
| 03/23/1976 | US3945562 Cross-bottom bag and method of making same |