Bioplastic Extruder/Research Development: Difference between revisions
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=Co-Extrusion= | =Co-Extrusion= | ||
Do different plastics mix well for making 3D printing filament? Yes, there are good combinations shown at [https://books.google.com/books?id=EmyMCS7n08QC&pg=PA65&lpg=PA65&dq=does+ABS+and+PET+coextrude?&source=bl&ots=-a0ZQ6IaR1&sig=BKfSsYQVS4D5GdqVnTzBN3k3Zvg&hl=en&sa=X&ved=0ahUKEwiiw-aYqoLaAhUBYKwKHfknA24Q6AEIKTAA#v=onepage&q=does%20ABS%20and%20PET%20coextrude%3F&f=false] | Do different plastics mix well for making 3D printing filament? Yes, there are good combinations shown at [https://books.google.com/books?id=EmyMCS7n08QC&pg=PA65&lpg=PA65&dq=does+ABS+and+PET+coextrude?&source=bl&ots=-a0ZQ6IaR1&sig=BKfSsYQVS4D5GdqVnTzBN3k3Zvg&hl=en&sa=X&ved=0ahUKEwiiw-aYqoLaAhUBYKwKHfknA24Q6AEIKTAA#v=onepage&q=does%20ABS%20and%20PET%20coextrude%3F&f=false] | ||
*Good examples: PC/PET, ABS/PVC | *Good examples: PC/PET, ABS/PVC. For PC/PET - that could be a good combination mixing best properties of both. | ||
=See Also= | =See Also= |
Revision as of 11:25, 23 March 2018
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Overview
Bioplastics
Cellophane is reformulated cellulose (wood), produced via an acid and base dunk of sawdust. This may be used in glazing. Car bodies may be made; the original car bodies for Ford were soybean-derived bioplastics.
Polylactic acid (PLA) can be made by fermenting starch or with hay in silage.
Mycelium can be placed in a mold with grain husks, wheat straw or any of a wide variety of other biomass (with different end product results) and be made into a variety of useful products, including a durable closed cell foam substitute.
Links
- plastics extrusion
- Wikipedia: Plastics Extrusion
- Wikipedia: Thermoforming
- Wikipedia: Vacuum Forming
- Wikipedia: Injection Molding
- Strictly Extrusion
- Society of Plastics Engineers
- SPE Online Technical Library
Open Source Extruders
- Precious Plastic - prototype filament maker. Note that the hopper feed mechanism appears to be robust, so that regrind can be used readily.
- Compare to Lyman Filament Extruder, which works well with pellets, but it is not clear if it would work robustly with regrind.
Co-Extrusion
Do different plastics mix well for making 3D printing filament? Yes, there are good combinations shown at [1]
- Good examples: PC/PET, ABS/PVC. For PC/PET - that could be a good combination mixing best properties of both.
See Also
- Waste Plastic Extruder: Literature Review
- Bioplastics
- Plastic Extrusion & Molding
- Upper Austria Green Biorefinery
- Polyethylene from Ethanol
Industry Standards
Horsepower, heating power, and screw size will determine throughput.
- Extruders on Ebay - $3k up - 30 hp motor, 1.5 - [2]
- Greiner-GCE-30-F-CO-Extruder-Plastics-Processing-Machine-30mm-1-1811-034-Screw - $4500 on Ebay - info PDF - [greiner-extrusion-group.com/files/greiner/downloads/Greiner%20Extrusion%20Group_Fact%20Sheet%20Co-Extruder_GCE_DE_EN.pdf]. Smallest one is 10kW - 5kW motor, and 2 zones of barrel heating at 1 kW each, and 2 zones of toolhead heating at 1 kW each.