| Patents for B31B 21 - Machinery characterised by making rectangular envelopes or bags of flat form, i.e. without structural provision at the base for thickness of contents, from sheets or blanks, e.g. from flattened tubes (165) | |
|---|---|
| 02/2002 | |
| 02/21/2002 | US20020020505 Device for heat sealing |
| 01/2002 | |
| 01/31/2002 | DE10034910A1 Heat sealer for plastics bags has pair of heated jaws and rollers to feed bag tubes and seal them |
| 12/2000 | |
| 12/07/2000 | DE19925612A1 Drehbare Messerwalze Pivoting blade roll |
| 12/06/2000 | EP1057597A2 Device for fixing a flexible cutting die on a cutting cylinder |
| 12/04/2000 | CA2310523A1 Rotary blade roll |
| 11/2000 | |
| 11/08/2000 | CN2404682Y Machine for making easy-to-be-opened envelope |
| 06/2000 | |
| 06/21/2000 | CN1257003A Apparatus for making automatic closed envelope |
| 01/2000 | |
| 01/26/2000 | CN2360254Y Prodn. line maker of envelope |
| 12/1999 | |
| 12/21/1999 | US6004427 Device for welding flatly stacked workpieces in the ultrasonic welding process |
| 12/07/1999 | CA2168175C Method for stabilizing a plastic zipper during attachment to a film |
| 09/1999 | |
| 09/15/1999 | EP0641283B1 Desk-top envelope maker |
| 05/1999 | |
| 05/12/1999 | CN2318029Y Hand bag making machine with bottom seal bag steering mechanism |
| 02/1999 | |
| 02/23/1999 | CA2005728C Apparatus for manufacturing sealed postal mails or the like envelope assemblies |
| 01/1999 | |
| 01/06/1999 | CN1203854A Automatic envelope-making device |
| 05/1998 | |
| 05/26/1998 | US5755082 Apparatus to fill air inside polyvinyl alcohol laminated paper to form cushioning bags for packaging |
| 10/1997 | |
| 10/17/1997 | CA2202836A1 Improved envelope maker and method of use |
| 08/1997 | |
| 08/20/1997 | CN2259989Y Composite bag end sealing and cutting machine |
| 08/13/1997 | CN1156661A Method for folding tubular synthetic resin film |
| 08/06/1997 | EP0787574A2 Manufacturing equipment for cushioning material |
| 06/1997 | |
| 06/17/1997 | US5638666 Desk-top envelope maker |
| 04/1997 | |
| 04/23/1997 | EP0769367A2 Method for folding a tubular synthetic resin film |
| 12/1996 | |
| 12/10/1996 | US5582570 Method and apparatus for binding sheets using a printing substance |
| 07/1996 | |
| 07/03/1996 | EP0719656A2 Thermal seal product and process |
| 04/1996 | |
| 04/04/1996 | WO1996009935A1 A method and apparatus for binding sheets using a printing substance |
| 10/1995 | |
| 10/10/1995 | US5456646 System and method for manufacturing sealed packages |
| 08/1995 | |
| 08/23/1995 | EP0641283A4 Desk-top envelope maker. |
| 06/1995 | |
| 06/27/1995 | US5426915 Desk-top envelope maker |
| 06/21/1995 | CN2201239Y Envelope machine conveying device |
| 03/1995 | |
| 03/08/1995 | EP0641283A1 Desk-top envelope maker |
| 02/1995 | |
| 02/14/1995 | US5388746 Separator/folder bag machine |
| 08/1994 | |
| 08/02/1994 | US5333437 Rotative inserting unit for documents and sheets of paper, in particular for automatic equipment for the printing and inserting of said materials into envelopes |
| 07/1994 | |
| 07/12/1994 | US5328438 System and method for manufacturing sealed packages |
| 02/1994 | |
| 02/08/1994 | CA1326843C Reclosable bag |
| 09/1993 | |
| 09/30/1993 | WO1993018919A1 Desk-top envelope maker |
| 06/1993 | |
| 06/09/1993 | EP0545870A1 Rotative inserting unit for documents and sheets of paper, in particular for automatic equipment for the printing and inserting of said materials into envelopes |
| 05/1993 | |
| 05/27/1993 | CA2082731A1 Rotative inserting unit for documents and sheets of paper, in particular for automatic equipment for the printing and inserting of said materials into envelopes |
| 05/25/1993 | US5213560 System and method for manufacturing sealed packages |
| 03/1993 | |
| 03/30/1993 | US5197727 Interleaving apparatus for rolled up segments |
| 11/1992 | |
| 11/25/1992 | EP0514699A1 Method and apparatus for manufacturing sealed packages |
| 11/21/1992 | CA2067684A1 System and method for manufacturing sealed packages |
| 08/1992 | |
| 08/07/1992 | CA2060601A1 Interleaving apparatus for rolled up segments |
| 05/1992 | |
| 05/14/1992 | DE4135786A1 Appts. sepg. sheets from perforated continuous web |
| 05/10/1992 | CA2054918A1 Separator/folder bag machine |
| 11/1991 | |
| 11/10/1991 | CA2016515A1 Fluid containers and ports therefor |
| 06/1990 | |
| 06/26/1990 | US4936817 Reclosable bag |
| 06/06/1990 | CN2057890U Envelope forming machine |
| 05/1990 | |
| 05/30/1990 | CN2057615U Bidirectional compensating bag-making machine |
| 02/1990 | |
| 02/21/1990 | CN2053142U Full-automatic envelope making machine |
| 02/13/1990 | US4900391 Recirculating folder for direct mail application |
| 11/1989 | |
| 11/22/1989 | CN1037302A Full-automatic envelope machine |
| 11/02/1989 | EP0339817A2 Reclosable bag |
| 10/1989 | |
| 10/18/1989 | CN2046073U Fully automatic onvelop adhesive seaming machine |
| 09/1989 | |
| 09/26/1989 | CA1260854A1 Containers |
| 11/1987 | |
| 11/24/1987 | US4709399 Opening facilitating closure tape and container |
| 09/1987 | |
| 09/08/1987 | CA1226562A1 Bone puncture resistant bag |
| 09/1985 | |
| 09/04/1985 | EP0153742A1 An apparatus for manufacturing a jacket case for disc |
| 07/1985 | |
| 07/02/1985 | US4526501 Sheet pile replenishment apparatus |
| 03/1985 | |
| 03/13/1985 | EP0134130A2 Containers |
| 02/1985 | |
| 02/05/1985 | US4497679 Method of forming plastic envelopes |
| 02/1983 | |
| 02/15/1983 | CA1141219A1 Method and apparatus for manufacturing an agricultural bag |
| 08/1982 | |
| 08/31/1982 | CA1130831A1 Bag folding apparatus |
| 02/1982 | |
| 02/23/1982 | US4316723 Method and apparatus for severing tube sections from tubular webs and transporting same |
| 05/1980 | |
| 05/20/1980 | CA1077758A1 Flexible envelopes |
| 10/1979 | |
| 10/17/1979 | EP0004749A2 Bag folding apparatus |
| 10/1978 | |
| 10/17/1978 | US4120716 Method of applying printed labels to flexible envelopes using corona discharge treatment |
1 2