PET Plastic Recycling Workflow - Revision history

Eric: Minor Clarification

2025-08-23T13:20:11Z

Minor Clarification

← Older revision		Revision as of 13:20, 23 August 2025
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	#Bottle Washing (Although pre-rinsing recycling is HEAVILY encouraged)		#Bottle Washing (Although pre-rinsing recycling is HEAVILY encouraged)
	#Bottle Drying (Re [[3D Printed Bottle Drying Stand]] / [[Open Source Bottle Drying Rack]] / [[Bottle Drying Rack]] )		#Bottle Drying (Re [[3D Printed Bottle Drying Stand]] / [[Open Source Bottle Drying Rack]] / [[Bottle Drying Rack]] )
			#Bottles are Sorted By Color/Brand (Minor Batch Variations+Colors such as Green Sprite Bottles etc)
	#Bottles are Peeled into Strips (Some can be diverted for weaving strips/making plastic rope (albeit compared to a solid brick etc, Plastic Textiles do generate more [[MNPs]] so short of when required, use of non-biodegradable plastic textiles isn’t advisable)		#Bottles are Peeled into Strips (Some can be diverted for weaving strips/making plastic rope (albeit compared to a solid brick etc, Plastic Textiles do generate more [[MNPs]] so short of when required, use of non-biodegradable plastic textiles isn’t advisable)
	#If not done so via the peeling machine, strips are fed onto [[Spools]]		#If not done so via the peeling machine, strips are fed onto [[Spools]]

Eric: Added some more information

2025-08-23T13:16:31Z

Added some more information

← Older revision		Revision as of 13:16, 23 August 2025
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	=Workflow=		=Workflow=
			==Conventional Recycling==
	#"Raw" plastic recycling in		#"Raw" plastic recycling in
	#Shredding		#Shredding
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	#(If stored dry, this is optional-ish) "Post Storage - Pre Use" Machine Dry		#(If stored dry, this is optional-ish) "Post Storage - Pre Use" Machine Dry
	#Use Flakes in any [[Precious Plastic Machine]] or the [[Open Source FDM Filament Maker]]		#Use Flakes in any [[Precious Plastic Machine]] or the [[Open Source FDM Filament Maker]]

			== [[PET Pulltrusion]] ==
			#Bottle Sourcing
			#Bottle Washing (Although pre-rinsing recycling is HEAVILY encouraged)
			#Bottle Drying (Re [[3D Printed Bottle Drying Stand]] / [[Open Source Bottle Drying Rack]] / [[Bottle Drying Rack]] )
			#Bottles are Peeled into Strips (Some can be diverted for weaving strips/making plastic rope (albeit compared to a solid brick etc, Plastic Textiles do generate more [[MNPs]] so short of when required, use of non-biodegradable plastic textiles isn’t advisable)
			#If not done so via the peeling machine, strips are fed onto [[Spools]]
			#Optional HEAVY Drying of Cut Strips akin to [[FDM 3D Printing Filament Drying]]
			#Bottle-Strips are Fed Through a [[PET Pulltrusion]] machine such as the [[Recreator3D]] or the [[PETamentor]]

	=Internal Links=		=Internal Links=

Eric: Minor Clarification

2020-07-29T00:32:17Z

Minor Clarification

← Older revision		Revision as of 00:32, 29 July 2020
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	##Can be stored as is, and do only drying pre-use (ie integrated before the hopper etc)		##Can be stored as is, and do only drying pre-use (ie integrated before the hopper etc)
	#IF NOT "Machine Dry" using some sort of device such as a hot air food dehydrator, etc		#IF NOT "Machine Dry" using some sort of device such as a hot air food dehydrator, etc
	#Storage in a sealed container with either an attached dehumidifier, or		#Storage in a sealed container with either an attached dehumidifier, or internal package of dessicant
	#(If stored dry, this is optional-ish) "Post Storage - Pre Use" Machine Dry		#(If stored dry, this is optional-ish) "Post Storage - Pre Use" Machine Dry
	#Use Flakes in any [[Precious Plastic Machine]] or the [[Open Source FDM Filament Maker]]		#Use Flakes in any [[Precious Plastic Machine]] or the [[Open Source FDM Filament Maker]]

Eric: Added some more information

2020-07-25T04:08:13Z

Added some more information

@@ Line 11: / Line 11: @@
 *[https://www.ptonline.com/articles/how-to-dry-pet-for-container-applications Article on Drying PET]
 *[https://www.goettfert.com/application-knowledge/rheo-info/for-melt-flow-indexer/moisture-content-in-plastics.html Moisture Content vs [[Melt Flow Index]] ]
 =Internal Links=

Eric: Added an external link

2020-06-08T17:37:16Z

Added an external link

← Older revision		Revision as of 17:37, 8 June 2020
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	*Specific data on water level vs degradation (a graph of '''water g/kg vs tensile strength''' or something?)		*Specific data on water level vs degradation (a graph of '''water g/kg vs tensile strength''' or something?)
	*Find Methods of in-machine drying (fluidized in hot air, like a hot air corn popper?)		*Find Methods of in-machine drying (fluidized in hot air, like a hot air corn popper?)

			=Research Paper Trashcan=
			*[https://www.researchgate.net/publication/228004745_Hydrolytic_and_thermal_degradation_of_PET_fibers_and_PET_granule_The_effects_of_crystallization_temperature_and_humidity Hydrolytic and thermal degradation of PET fibers and PET granule: The effects of crystallization, temperature, and humidity] -seems spot on on what is needed, need to read
			*[https://www.ptonline.com/articles/how-to-dry-pet-for-container-applications Article on Drying PET]
			*[https://www.goettfert.com/application-knowledge/rheo-info/for-melt-flow-indexer/moisture-content-in-plastics.html Moisture Content vs [[Melt Flow Index]] ]

	=Internal Links=		=Internal Links=

Eric: Created Page + Added Basic Sections/Info

2020-06-08T17:01:12Z

Created Page + Added Basic Sections/Info

New page

=Basics=
*[[PET (Plastic) ]] undergoes hydrolysis when even slightly damp at it's melting point
*THUS it is best to store it at least moderately dry, and/or dry pre-use (in some process/machine integrated dryer)

=To Do=
*Specific data on water level vs degradation (a graph of '''water g/kg vs tensile strength''' or something?)
*Find Methods of in-machine drying (fluidized in hot air, like a hot air corn popper?)

=Internal Links=
*[[Filament Maker]]
*[[Precious Plastic]]
*[[PET (Plastic) ]]

=External Links=
*[https://en.wikipedia.org/wiki/Polyethylene_terephthalate The Wikipedia Page on PET Plastic]
*[https://en.wikipedia.org/wiki/PET_bottle_recycling#Drying_polyester A Section of the Page "PET Bottle Recycling" on the need for proper drying]