|
US3015601A
|
|
Art of heat sealing and severing thermoplastic films
|
|
US2961031A
|
|
Apparatus for heat sealing and severing thermoplastic films
|
|
US2904100A
|
|
Sealing member for heat sealing machines
|
|
US2918106A
|
|
Duplex heat sealing machine
|
|
US2802086A
|
|
Sealing device for heat sealing machines of the thermal impulse type
|
|
US2714416A
|
|
Heat sealing machine and sealing member therefor
|
|
US2721925A
|
|
Heat sealing machine
|
|
US2711781A
|
|
Heat sealing machine and method
|
|
US2682294A
|
|
Heat sealing machine of the thermal impulse type and sealing bar therefor
|
|
US2640796A
|
|
Method of bonding
|
|
US2675054A
|
|
Machine for continuously bonding thermoplastic materials
|
|
US2730161A
|
|
Heat sealing machine of the thermal impulse type and method
|
|
US2650183A
|
|
Heatsealing method
|
|
US2646105A
|
|
Heat sealing machine
|
|
US2640798A
|
|
Method of bonding
|
|
US2574095A
|
|
Sealing device for heat-sealing machines of the thermal impulse type
|
|
US2621704A
|
|
Heat sealing device
|
|
US2574094A
|
|
Heat-sealing machine of the thermal impulse type
|
|
US2633443A
|
|
Method of heatsealing
|
|
US2630396A
|
|
Heat sealing method
|
