Inquiry (采购产品): High velocity Hot air dryer To whom it may concern I am a lecturer at the printing college and want some information on the Hot air dryer and Gas fired dryer We use the GATF Web offset Press operating handbook as instruction module.In this handbook they refer to the advantage the hot air dryer has over the open flame or gas fired dryer to prevent solvent saturation The boundary layer that forms with the moving web is removed by introducing turbulence to this boundary layer.Is this done by the controlled ripple that was introduced via the air jets blowing air at the paper?.Then the next question. Does this then mean that in the hot Flame or gas dryer there is no boundary layer forming next to the moving web (seeing they refer to the advantage the hot air dryer has with this turbulence.And then referring back to that , does this mean that in the Gas/flame dryer there is no controlled ripple to prevent fluting (corrugating) I hope you can answer me on these questions as we are teaching the apprentices without having any machinery on our premises to show them what we are talking about Are there any visual material of the internal layout of these driers available that we can use in the classroom in the form of DVD or video.Please inform us on that and the cost thereof Thank you for reading this and hope to hear from you soon **** Hidden Message ***** Koos Mc Donald Marconi Beam Montaque Gardens Cape TownWestern Cape ZAF Company: Cross Media Training Center Title: Lecturer E-mail: kmcdonald@absamail.co.za **** Hidden Message ***** kmcdonald@absamail.co.za
