The 1st tiny packaging machine made by Accutek was a timed stream liquid filler. 30 many years in the past, packaging machines weren't nearly as adaptable as They are really now. Timing and Command were completed mechanically and by using a couple of relays. Accutek was an field leader https://www.linpack.com/news/vacuum-packaging-machines-what-to-consider-before-making-a-purchase