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orientation in extrusion

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Author	Topic: orientation in extrusion
Rei Member Posts: 3 From:Maracay, Aragua, Venezuela Registered: Sep 2005	posted September 17, 2005 07:45 PM Is possible to produce biorientation in extrusion? What parameters should i adjust to achieve my goal? IP: Logged
Steve H Moderator Posts: 372 From:New Zealand Registered: Jun 2001	posted September 18, 2005 06:17 PM Hi Rei Welcome to the single screw forum, what extrusion process are you using? The amount of bubble inflation adds orientation in the transverse direction while hauloff adds it in the other. For cast film/sheet, you can only draw the material down to add orientation in the machine direction, to add it in the transverse direction the film needs to be heated and mechanically pulled in that direction. ------------------ Steve Hodgson If at first you don't succeed, skydiving is not for you. IP: Logged
Rei Member Posts: 3 From:Maracay, Aragua, Venezuela Registered: Sep 2005	posted October 05, 2005 09:02 PM Thank you so much, i asked about the cast/sheet extrusion. So, if i don´t pull the sheet i get any orientation. Thank you so much quote: Originally posted by Steve H: Hi Rei Welcome to the single screw forum, what extrusion process are you using? The amount of bubble inflation adds orientation in the transverse direction while hauloff adds it in the other. For cast film/sheet, you can only draw the material down to add orientation in the machine direction, to add it in the transverse direction the film needs to be heated and mechanically pulled in that direction. IP: Logged

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