3D printing pet filament

1.75mm PET Filament | MatterHackers

You'll be hard pressed to find true PET (Polyethylene terephthalate) filament, as most PET filaments are actually copolymers - PET with an extra molecule. The most common, PETG filament, is an industrial strength filament with several great features. Figuratively speaking, it combines the ease of use of PLA filament with the strength and durability of ABS filament. First, its strength is much higher than PLA and it is FDA approved for food containers and tools used for food consumption. Unlike ABS filament, it barely warps, and produces no odors or fumes when printed. PET filament is not biodegradable, but it is 100% reclaimable. It's known for its clarity and is also very good at bridging. PET 3D printing filament is available in 1.75mm and 2.85mm. For tips and tricks on 3D printing PETG, check out How To Succeed When Printing With PETG.

PETG Filament

PRO Series PETG

A strong material combining the ease of PLA printing with the durability of ABS.

PRO Series Ryno

Excellent at bridging and retraction to keep your parts clean with minimal post-processing.

MH Build Series PETG

An affordable, low-cost PETG filament intended for producing tough and sturdy 3D printed parts.

Ultimaker PETG Filament

Create useable prototypes and functional parts with this durable material.

Guides & Articles

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How to Succeed when 3D Printing with Polycarbonate Filament

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How to Succeed with NylonX

NylonX has quickly become one of our favorite filaments for strong, durable, and ready-to-use parts. Here's an in-depth look at Nylon X, and some printing tips to get the most out of this great new material.

Polyethylene Terephthalate (PET) Filament Review

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What is PET?

This page covers the pure PET, sometimes referred to as ‘PETP’. We will cover other PET modifications, including PETG, on separate pages.

Polyethylene Terephthalate (PET) is a polyester-based material that combines excellent mechanical, electrical and thermal properties with very good chemical resistance and dimensional stability. PET also has low moisture absorption features and good flow properties, making it a great material to use for waterproof containers such as food and beverage storage. It is a great material to use for making lightweight products such as potted planters, insulated bottles, or tupperware.

It is a 100% recyclable material, but recycled material may have a softer surface that could make it prone to wear and tear.

What can you use PET for?

PET is a thermoplastic available in many forms for traditional manufacturing. PET is available in pellets for injection molding and extrusion, as well as in sheet for thermoforming. PET filament can therefore be used to mimic the performance of products we come in contact with on a regular basis, and can also be used in some tooling applications.

PET for 3D Printed Tooling

PET can be used to produce tooling as a stronger, stiffer alternative to ABS, including:

Thermoforming molds
Jigs and fixtures
Assembly aids

PET for Prototypes and Production 3D Printing

PET can be a suitable material for electronic applications requiring good heat resistance, dimensional stability, strength, and/or chemical resistance, including:

Lighting frames
Lamp housings
Check valves
“White good” connectors

Consult your engineering team to understand the limitations for 3D printed parts compared to those made traditionally.

PET Material Properties

Typical properties for molded PET test specimen include:

Tensile Strength: 42.5 - 63.6 MPa
Tensile Modulus ≅ 3,500 MPa
Elongation at Break ≅ 70%
Elongation at Yield ≅ 4. 5%
Flexural Strength ≅ 82.5 MPa
Flexural Modulus ≅ 2,450 MPa
Glass Transition Temperature ≅ 70°C
Heat Deflection Temperature (1.8 MPa): 71.6 - 80.0°C
Hardness ≅ Shore D 82
Density ≅ 1.4 g/cc

Disclaimer: The above information is provided in good faith. JuggerBot 3D assumes no obligation or liability for the accuracy or completeness of the information supplied in this document. It is solely the customers responsibility to determine if the product and information in this document are appropriate for the customers end use. Responsibility for the use, storage, handling, and disposal of the products herein is that of the purchaser or end user.

3D PRINTER Requirements AND SETTINGS

Different brands and strands of PET may require changes to the processing parameters and/or configuration of a 3D printer. Operators should always check for the suggested printing parameters provided by the material manufacturer. Your machine manufacturer can also be a great resource for processing knowledge.

DSM Additive Manufacturing suggests a print speed between 50-100 millimeters per second, and states that the preferred extruder temperature be set to 270°C, although the material can be extruded between 265°C and 300°C. They recommend setting the bed temperature between 60°C and 100°C, and an enclosed printer is preferred to best results.

3D Printing with PET - the procedure

It is critical that operators take the proper material handling precautions to prevent moisture pick up and contamination. DSM Additive Manufacturing suggests bringing cold material up to ambient temperature in its closed packaging to prevent moisture condensing on filament. Material should be dried at 80°C for at least four hours.

Did you know that JuggerBot 3D’s additive systems incorporate built-in dryers? Learn more about how operators can maintain the ideal material composition and process control.

Operators are encouraged to make sure the 3D printer is “cleaned” before and after production. For instance, DSM Additive Manufacturing suggests extruding at least 50 millimeters of material through the nozzle before starting a print, and purging the nozzle with PLA or PETG after printing. They also advise operators to remove PET filament from the machine before shutdown.

An enclosed build chamber is recommended for printing PET, and a heated build chamber is preferred. The build surface should be free of direct and grease, which can be cleaned with ethanol or acetone before applying any adhesion promoters, such as Magigoo, 3D-Lac, or glue.

After a part is finished printing, operators may want to leave the printed part in ambient conditions for at least four hours post production.

Contributor's Bio:

Greg Costantino is the New Business Development and Application Specialist at DSM Additive Manufacturing, a business unit of Royal DSM, NV. He is responsible for developing and executing the strategy for business development in the N. America region. Some of his key responsibilities are identification and analysis of markets for growth, strategic planning, project management and coordination of new product development.

Greg Costantino | New Business Development & Application Specialist | DSM Additive Manufacturing

DSM – Bright Science. Brighter Living.™

Royal DSM is a global science-based company active in health, nutrition and materials. By connecting its unique competences in Life Sciences and Materials Sciences DSM is driving economic prosperity, environmental progress and social advances to create sustainable value for all stakeholders. DSM delivers innovative solutions that nourish, protect and improve performance in global markets such as food and dietary supplements, personal care, feed, pharmaceuticals, medical devices, automotive, paints, electrical and electronics, life protection, alternative energy and bio-based materials. DSM’s 23,500 employees deliver annual net sales of around € 9 billion. The company is listed on NYSE Euronext. More information can be found at www.dsm.com.

Learn more

To learn more about PET please contact Dan at [email protected]

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