James M. Margolis has written:

'Decorating Plastics'

'Instrumentation for Thermoplastics Processing (Hanser Publishers)'

'Instrumentation for Thermoplastics Processing'

Preheating is necessary for those plastics who are hygroscopic in nature. Mostly all engineering plastics are need to be preheated before processing. If we do not preheat the material than the present moisture in plastics material will react with molten plastic during processing and will cause breakage of polymer chain and results the poor visual appearence (Silver Streaks) & lower mechanical properties of the molded component.

Plastics can be preheated thro Hot air oven or Material hopper dryer. And the preheat tempreature may very plastics to plastics. Answer By: Sachin Porwal, Follow me on Twitter: @sachinporwal

Aerospace, Automotive, Plastics, Energy, Food Processing, Modeling and Simulation. I guess it depends on what you consider 'big'.

Gianni Bodini has written:

'Menschen in den Alpen' -- subject(s): Pictorial works, Social life and customs

'Riti & tradizioni popolari in Alto Adige'

'Moulding machines and moulds for plastic processing' -- subject(s): Plastics, Plastics machinery, Molds, Molding