| Patents for B31B 31 - Machinery characterised by making envelopes or bags with structural provision at the base for thickness of contents, from sheets or blanks, e.g. from flattened tubes (130) | |
|---|---|
| 03/1994 | |
| 03/09/1994 | CN2158340Y Machine for making plastic bag |
| 06/1993 | |
| 06/09/1993 | CN2135452Y Bag making machine |
| 02/1993 | |
| 02/24/1993 | EP0527988A1 Process for making a sack or bag with a flat base when filled and with a handle, and sack or bag made by said process |
| 02/03/1993 | EP0525097A1 Method and apparatus to promote gas exchange from a sealed receptacle. |
| 12/1992 | |
| 12/10/1992 | WO1992021580A1 Self stable bag intended to contain a liquid, pasty or powder product |
| 09/1992 | |
| 09/03/1992 | DE4135980A1 Verfahren zur herstellung eines sacks oder beutels mit in gefuelltem zustand rechteckigem boden und mit einem griffteil und nach diesem verfahren hergestellter sack oder beutel A method for making a bag or sacks were full with rectangular ground state and a process handle part, and after that produced sack or bag |
| 08/1992 | |
| 08/29/1992 | WO1992015492A1 Process for making a sack or bag with a flat base when filled and with a handle, and sack or bag made by said process |
| 08/29/1992 | CA2081107A1 Method for manufacturing a sack or bag with a bottom being rectangular in the filled state and with a handle, and a sack or bag manufactured in accordance with said method |
| 08/26/1992 | EP0499892A2 Shipping folding box, bag or the like and method of production |
| 08/21/1992 | CA2061537A1 Shipping pouch bag, or the like, and method for their production |
| 11/1991 | |
| 11/05/1991 | US5062603 Vacuum drum purge method and apparatus |
| 10/1991 | |
| 10/20/1991 | WO1991016237A1 Method and apparatus to promote gas exchange from a sealed receptacle |
| 07/1991 | |
| 07/03/1991 | CN2080023U Automatic package sealing machine |
| 12/1988 | |
| 12/13/1988 | US4790804 Bag manufacturing apparatus |
| 08/1986 | |
| 08/12/1986 | CA1209606A1 Apparatus for folding paper sacks to z-shape |
| 04/1986 | |
| 04/15/1986 | CA1203256A1 Apparatus for folding paper sacks to z shape |
| 09/1985 | |
| 09/10/1985 | US4540396 Apparatus for folding paper sacks to Z shape |
| 04/1985 | |
| 04/02/1985 | US4508529 Apparatus for folding paper sacks to Z shape |
| 04/02/1985 | US4508222 Plastic bags |
| 11/1983 | |
| 11/09/1983 | EP0093390A1 Device for folding paper bags into a Z shape |
| 10/1983 | |
| 10/26/1983 | EP0092259A1 Device for folding paper bags in a Z shape |
| 07/1983 | |
| 07/05/1983 | CA1149343A1 Flexible containers |
| 02/1983 | |
| 02/22/1983 | CA1141717A1 Paperbag having articulated handle |
| 12/1982 | |
| 12/07/1982 | US4362199 Flexible containers |
| 11/1982 | |
| 11/16/1982 | CA1135549A1 Method of making a collapsible drum-type container |
| 04/1981 | |
| 04/28/1981 | US4264317 Method of making valved sacks provided with cross-bottoms |
| 04/22/1981 | EP0027309A1 Manufacture of flexible containers |
| 09/1980 | |
| 09/09/1980 | US4221321 Paperbag having articulated handle |
| 01/1980 | |
| 01/08/1980 | CA1069470A1 Flexible container for transportation and storage of bulk material, and method for manufacturing said container |
| 01/1979 | |
| 01/30/1979 | US4136723 Flexible container for transportation and storage of bulk material |
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