Invention Application
- Patent Title: METHOD FOR BENDING THERMOPLASTIC PIPES
- Patent Title (中): 弯曲热塑管的方法
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Application No.: US13493356Application Date: 2012-06-11
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Publication No.: US20120325363A1Publication Date: 2012-12-27
- Inventor: Juergen KNEBL , Peter Luettmann , Michael Groel
- Applicant: Juergen KNEBL , Peter Luettmann , Michael Groel
- Main IPC: B29C53/08
- IPC: B29C53/08 ; F16L9/00

Abstract:
A method for producing a bent pipe from thermoplastic material with end cross-sections, central points of which have in relation to one another a positional tolerance on the basis of LN xy/JAR xy/FAR xy in relation to one another. A straight pipe element is introduced into a tool and a portion of the straight pipe element is heated that is located in the bending region to a temperature which lies above a glass transition temperature of the thermoplastic material by a first temperature value. The straight pipe element is bent about the heated bending region of the tool by a freely selectable bending angle, which has a spatial alignment in an XYZ system of coordinates that is fixed with respect to the pipe. The pipe is then cooled below the glass transition temperature by a second temperature value.
Public/Granted literature
- US08931521B2 Bent thermoplastic pipe Public/Granted day:2015-01-13
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