|
US3105417A
|
|
Method for production of reinforced bags, tobacco pouches, etc. of synthetic foil
|
|
GB911874A
|
|
Improvements in and relating to the production of reinforced bags
|
|
DE1167002B
|
|
Method for producing flat bags from a double-layered film made of thermoplastic material
|
|
GB825257A
|
|
Improvements in or relating to closures for bags
|
|
US2738828A
|
|
Method and arrangement to carry out welding operations on plastic film webs
|
|
GB750530A
|
|
Methods and apparatus for carrying out seam-welding operations on plastic film webs
|
|
GB598457A
|
|
An improved machine for applying closure strips to bags
|
