| Patents for B31B 27 - Machinery characterised by making interconnected envelopes or bags (348) |
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| 12/28/1993 | CA1325621C Envelope for table top printer |
| 12/28/1993 | CA1325530C Control and detection circuitry for mass airflow sensors |
| 12/01/1993 | CN1078954A Apparatus for heat sealing plastic film layers |
| 10/28/1993 | DE4311514A1 Appts. for sealing film webs |
| 10/23/1993 | CA2094520A1 Apparatus for sealing film webs of a thermoplastic synthetic material |
| 09/14/1993 | US5244450 Process of making blocks of bags |
| 07/13/1993 | US5226858 Method and apparatus for producing bags interconnected at their open ends |
| 06/22/1993 | US5221567 Packaging system |
| 06/01/1993 | US5215275 Plastic bags roll and method for making same |
| 05/26/1993 | EP0543540A1 Business forms and method and apparatus for forming such forms |
| 05/22/1993 | CA2083412A1 Pressure seal multiple part collated form |
| 05/12/1993 | EP0541188A1 An apparatus for heat sealing two superposed layers of plastic film |
| 01/19/1993 | CA1312890C Web-type multiple-part business form stock having pre-glued but non-adhered cross-web heat seal glue lines designed for activation to seal outgoing envelopes after printing-type personalization of potential forms thereof |
| 12/29/1992 | US5174449 Center feed roll |
| 12/25/1992 | CA2072209A1 Process of making blocks of bags |
| 12/22/1992 | CA1311641C Apparatus for manufacturing sealed posted mails or the like envelope assemblies |
| 12/01/1992 | US5167739 Pressure seal multiple part |
| 09/22/1992 | CA1307770C Chain bags, method and apparatus |
| 06/23/1992 | CA1304048C Conventional return envelope in a two-part mailer and method of assembly |
| 06/03/1992 | EP0488986A1 Method and apparatus for continuously forming sealing and filling low density polyethylene bags at high speed |
| 06/02/1992 | US5118030 Mailer with perforated adhesive areas |
| 04/15/1992 | EP0395721B1 Control and detection circuitry for mass airflow sensors |
| 03/10/1992 | US5094657 Method and apparatus for continuously forming and sealing low density polyethylene bags at high speed |
| 02/21/1992 | CA2049494A1 Return envelope mailer |
| 01/07/1992 | US5077957 Web of interconnected bags |
| 10/16/1991 | EP0333726B1 Bag-making machine |
| 10/02/1991 | EP0449497A1 Process for forming chain of interconnected plastic bags |
| 10/01/1991 | US5052977 Multiple web business form |
| 09/27/1991 | CA2036456A1 Reclosable bag and method of making |
| 09/10/1991 | CA1288740C Reclosable bag and material |
| 08/20/1991 | US5040720 Return envelope mailer |
| 06/26/1991 | EP0298107A4 Method of making and filling bags |
| 04/23/1991 | US5009632 Method and device for joining foil hoses |
| 03/19/1991 | CA1281573C2 Reclosable bag material and method of and means for making same |
| 02/19/1991 | US4994128 Method for manufacturing film rolls |
| 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 |
| 11/07/1990 | EP0395721A1 Control and detection circuitry for mass airflow sensors. |
| 10/02/1990 | US4960237 Self-contained insert mailer |
| 08/21/1990 | US4950217 Bag making machine with coupling-controlled perforating and welding |
| 05/16/1990 | EP0368509A2 Multiple web business form stock and mailers |
| 03/27/1990 | US4911777 Method for manufacturing photograph slide sleeving material |
| 02/14/1990 | EP0354758A1 Self-contained insert mailer |
| 01/03/1990 | EP0348823A2 Method and device for manufacturing bags with thermoplastic pull strings |
| 12/05/1989 | US4884443 Control and detection circuitry for mass airflow sensors |
| 11/23/1989 | EP0342829A2 Envelope for table top printer |
| 09/27/1989 | EP0333726A1 Bag-making machine. |
| 09/26/1989 | CA1261797A1 Two part mailer with return envelope |
| 08/23/1989 | EP0329316A2 Method for manufacturing photograph slide sleeving material and slide storage files therefrom |
| 08/23/1989 | EP0328672A1 Roll film and method of manufacturing same |
| 06/29/1989 | WO1989005967A1 Control and detection circuitry for mass airflow sensors |
| 06/06/1989 | US4835948 Bag filling machine |
| 03/08/1989 | EP0306131A2 Multiple-part business form |
| 02/22/1989 | EP0303732A2 Method for making a web of interconnected bags |
| 02/22/1989 | EP0303726A1 Method for making a half tube web |
| 02/09/1989 | WO1989000967A1 Roll film and method of manufacturing same |
| 01/11/1989 | EP0298107A1 Method of making and filling bags |
| 01/04/1989 | EP0297843A1 An apparatus for manufacturing sealed postal mails or the like envelope assemblies |
| 11/24/1988 | DE3716265A1 Method and device for producing and packaging carrier bags, bags, sacks or the like which are attached to one another in the manner of a chain and are made of plastic film with a bottom weld |
| 11/22/1988 | CA1245194A1 Flip die cut label for folded mailer |
| 10/11/1988 | US4776510 Conventional return envelope in a two-part mailer and method of assembly |
| 09/13/1988 | US4770337 Web-type multiple-part business form stock having pre-glued but non-adhered cross-web heat seal glue lines designed for activation to seal outgoing envelopes after printing-type personalization of potential froms thereof |
| 08/18/1988 | DE3703757A1 Plastic bag with side folds and a bottom weld, and method and device for its manufacture |
| 08/16/1988 | US4764030 Part bottom seal of chain of gusseted bags and machine therefor |
| 08/02/1988 | US4760684 Bags |
| 07/28/1988 | WO1988005383A1 Method of making and filling bags |
| 05/31/1988 | US4747815 Collection of bags and method of preparing the same |
| 05/19/1988 | WO1988003474A1 Arrangement in a bag-making machine |
| 04/06/1988 | EP0262838A2 Conventional return envelope in a two-part mailer and method of assembly |
| 02/23/1988 | US4726804 Method and apparatus for fabricating continuous envelopes |
| 11/24/1987 | US4709398 Chain bags, method and apparatus |
| 09/22/1987 | US4694959 Maintaining single link chain bags against skewing |
| 09/16/1987 | EP0237215A2 Two-part mailer with return envelope |
| 07/14/1987 | CA1224190A1 Method of forming a bag chain |
| 12/16/1986 | US4630310 Off-set means for removing bags from connected plural rows |
| 12/09/1986 | CA1215025A1 Postal module for confidential information |
| 11/25/1986 | US4624408 Carrier sheet assembly including continuously overlapped envelopes and letter heads |
| 07/29/1986 | CA1208608A1 Continuous business form for automated mailing |
| 07/09/1986 | EP0187083A1 Continuous assembly of postal letters or the like |
| 04/22/1986 | US4584706 Chain of laterally interconnected bags |
| 03/11/1986 | US4575121 Postal module for confidential information |
| 07/09/1985 | CA1190262A1 Continuous form assembly of mailer sets |
| 06/18/1985 | US4524459 Square ended bag |
| 06/18/1985 | US4523918 Method of forming a bag chain |
| 06/11/1985 | CA1188557A1 Method for making partially separated multibags |
| 04/30/1985 | US4514182 Method of affixing envelopes and letterheads to a carrier sheet and assembly formed thereby |
| 04/24/1985 | EP0138413A2 Continuous business forms assemblies |
| 04/23/1985 | CA1185933A1 Mailer construction |
| 02/19/1985 | US4500307 Apparatus for producing continuous bags of thin wall material |
| 02/05/1985 | US4497509 Continuous business form for automated mailing |
| 01/15/1985 | US4493684 Method for making partially separated multibags |
| 12/11/1984 | CA1179300A1 Pouch with closure seal strip and method for making same |
| 06/13/1984 | EP0110842A2 Postal module for confidential information |
| 03/28/1984 | EP0103941A2 Continuous business form for automated mailing |
| 03/14/1984 | EP0102792A2 Mailer construction |
| 03/13/1984 | US4435944 Apparatus for orderly transport and storage of flat objects |
| 09/06/1983 | US4402453 Pouch with closure seal strip and method for making same |
| 07/12/1983 | CA1149659A1 Method and means for the manufacture of self contained mailers |
| 06/14/1983 | US4387550 Container strips and method of making and using the same |
| 02/16/1983 | EP0072086A2 Method of manufacture of bags from synthetic plastics material and apparatus therefor |
| 01/18/1983 | CA1139651A1 Method and apparatus for orderly transport and storage of flat objects and a plastic bag suitable therefor |