Manual Filament Extruder - blogs.tu-braunschweig.de

Institut für Werkzeugmaschinenund Fertigungstechnik

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Manual for PET filament extruding

Benjamin Neef, Roman Stieben, Nora Jaeschke, Lina KindermannOctober 12th 2015Institute for Machine Tools and Production TechnologyInstitute for Machine Tools and Production Technology

Outline

Explanation of the extruder with whole views

Steps for extrusion:Steps for extrusion: Bottle cleaning and crushing Drying of the crushed bottlesDrying of the crushed bottles Extrude Winding

Troubleshooting


October 12th 2015 | Slide 2

Benjamin Neef, Roman Stieben, Nora Jaeschke, Lina Kindermann | Manual for PET filament extruding

Whole view (upright)

Compressed air leverand pressure gauge

Temperaturecontrol

Piston

Melting potg p

Pulling unitPulling unit




Whole view (lying)

Winder Pulling unitg

12VPower supply

Coolingsectionsupply




Safety informations

W i fWarning ofelectric shockat the heating

elementselements.

Warning ofincineration at

the heatingelements.




Bottle cleaning and crushing

1. Wash thebottles 2. Remove bottles. cover.

3. Cut the top. 4 Cut the base4. Cut the base.





1. Cut the mainbodybody.





1. The cuttedparts should fit in the meltingin the melting

pot.

2. The cuttedparts should be

dry (usedry (usesunlight).




Drying and homogenising of the crushed bottles

1. Leave thepiston upright.

1. Fill themelting pot of

the uprightthe uprightextruder with

the parts(approx 8(approx. 8 bottles).





3. Maintain120°C for

approx. 4h.1. Push themain power

lever up.

2. Heat the extrudert b t tstep by step to

120°C by pushing setand use the cursor

buttons Start with 60buttons. Start with 60 then 90 and then

120°C.





3. Maintain200°C for1. Push theapprox. 1h

(depending on material).

compressed airlever gently to

the left. The i illpiston will move

down.

2. Heat the extruderto 200°C.




Extrude

1. Lay down theextruder.




Extrude

1. Plugin the 2. Water levelgcooling sectionand fill it withapprox. 70°C hot water (1,2

litres).




Extrude

1. Plugin thepulling unit and

ensure thewheels are

rotating in theright direction.g




Extrude

1. Heat up to217°C.




Extrude

1 Filament1. Filament should now start

to extrude.




Extrude

1. Lay thefilament betweenthe wheels in the

pulling unit.




Winding

1. Plug in thewinder

2. Mount thefilament into thewinder. filament into the

winder.




Winding

1. The filamentshould be

winded to thedrum.




Winding

1. The filamentshould have a thickness of

1,75mm.




Troubleshooting

If too much air bubblesappear inside the

melted PET, close thecompressed air supply

and wait for 15 minutes, so that thePET f ll h tPET can fully heatthouroughly. Thenopen the air supply

i d tiagain and continuewith extrusion.





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Thank you!

Benjamin Neef, Roman Stieben, Nora Jaeschke, Lina KindermannOctober 12th 2015Institute for Machine Tools and Production TechnologyInstitute for Machine Tools and Production Technology

Manual Filament Extruder - blogs.tu-braunschweig.de

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