Industrial 3D Printing with Thermoplastic Polyurethane TPU

Be taught extra about:

• Why TPU is such a singular elastomer for 3D printing.
• The advantages of TPU, like chemical and abrasion resistance.
• Why TPU is making groundbreaking strides in functions like automotive and even footwear.
• 3D printing TPU components with Multi Jet Fusion or Selective Laser Sintering expertise.

Created in a German lab in 1937, Thermoplastic Polyurethane (TPU) is now a kind of ubiquitous plastic supplies that spans quite a few applied sciences in industrial manufacturing, as a result of potential for shaping the extremely malleable materials through a warmth supply into numerous shapes and buildings for a variety of functions. It’s simple to grasp why TPU is so widespread in 3D printing in addition to different conventional forms of manufacturing, and why it has turn out to be an trade customary regardless of the tactic.

Composed of segmented copolymers, TPU is exclusive in its chemical make-up. Exhibiting a contrasting juxtaposition by way of its parts, this elastomer incorporates a mushy section, in addition to one that’s extra inflexible. Mixed, these parts create the rubbery texture present in TPU–resulting in simplicity in processing, in addition to the fabric’s mass enchantment. 

With deep roots in conventional manufacturing, designers and engineers proceed to depend on this particular mixture of high-grade thermoplastics for strategies like injection molding. Widespread mildew designs can be utilized for creating components with TPU; nonetheless, a handful of components could also be thought of for higher outcomes, together with processes like drying the fabric beforehand, molding, and spending time in post-processing.

The Advantages—The place to Start?

Shapeways 3D prints TPU through each Multi Jet Fusion (MJF) and Selective Laser Sintering (SLS) applied sciences, providing a number of advantages over different elastomers. Resistance is on the prime of the checklist for manufacturing of sturdy components meant to face the take a look at of time. TPU is very proof against affect and put on and tear, but additionally gives glorious abrasion-resistance–a vital property for mechanical components which might be anticipated to resist years of friction as components rub in opposition to one another throughout use and might start to degrade. The flexibility to withstand chemical compounds, together with oils and solvents, and harsh climate and warmth, additionally makes TPU a wonderful alternative for 3D printing and subsequent industrial use.

Different nice options embody:

• Excessive elongation at break – A fabric attribute measured by evaluating the place a component breaks after being strained, versus its unique size, TPU scores off the charts. That includes exponentially larger elongation at break–or ductility–than different 3D printing supplies as a consequence of its elasticity, TPU is particularly helpful in vital functions as a result of it’s each versatile and difficult and capable of deal with substantial deformation to its form with out breaking.
• Superior tensile energy – Outlined by how a lot pulling pressure a component can take earlier than fracturing, tensile energy is measured by way of items of strain known as megapascals (MPa). With a excessive tensile energy of as much as 60 MPa, coupled with good flexibility, TPU can be utilized for high-performance components anticipated to resist rigorous use.
• Glorious load-bearing capability – This is a vital measurement because it testifies to how a lot weight a 3D printing materials can deal with earlier than it fails. Load-bearing capability is a particularly essential issue for functions requiring high-performance merchandise which might be anticipated to final, together with bigger components in addition to smaller mechanical units like tubing, hoses, and seals.

With the power to print extremely versatile, interlocking merchandise in addition to industrial components on the big scale, each SLS and MJF 3D printing supply better design freedom too. That is primarily as a consequence of a classy system that eliminates the necessity for helps throughout 3D printing, which means that designers aren’t restricted by the concern of figuring in complicated help buildings.

3D Printing TPU with Multi Jet Fusion Know-how

Shapeways gives Multi Jet Fusion (MJF) for 3D printing Ultrasint® TPU 01, leading to prototypes and components which might be sturdy, with robust mechanical properties. Like SLS 3D printing, MJF is powder-based; nonetheless, it doesn’t depend on laser warmth to soften layers collectively. As a substitute, one layer of powder is deposited after the opposite, 80 microns at a time, with an inkjet array shifting forwards and backwards jetting out fusing brokers to fuse the powder particles collectively, and detailing brokers to guarantee good element and easy floor texture. 

Because the layers soften collectively shortly through thermal warmth with MJF 3D printing, ensuing components are secure and well-defined. A standalone cooling system additionally helps eradicate challenges like warping, shrinkage, or total failure in components. 

Design Pointers

For this materials, 3D fashions have to be inside the following minimal and most bounding field sizes:

• Bounding Field Min
  • A minimum of 1 extant dimension over 19mm
• Bounding Field Max

This 3D printing materials is on the market in a grey, pure end. Discover the design tips for TPU additional right here.

3D Printing TPU with Selective Laser Sintering Know-how

That includes energy and velocity, SLS 3D printing expertise makes it attainable for Shapeways to 3D print extremely correct TPU components which might be detailed, with easy surfaces. One of many oldest 3D printing applied sciences–except for SLA 3D printing–SLS is a subcategory of powder-bed fusion and closely relied on for each speedy prototypes and extremely purposeful finish components. 

The method is about into movement as a small quantity of powder is dispersed onto the SLS print mattress. A high-powered laser traces the form of the 3D design into the powder as every layer is 3D printed and fused collectively at a excessive temperature just under the melting level.

Design Pointers

For this materials, 3D fashions have to be inside the following minimal and most bounding field sizes:

• Bounding Field Min
  • 15 x 15 x 0.7 mm
  • X + Y + Z ≥ 15.0 mm
• Bounding Field Max

This 3D printing materials is on the market in white, with a Commonplace matte end. Discover the design tips for 3D printing TPU with SLS expertise additional right here.

Typical Purposes for Thermoplastic Polyurethane

Automotive

Whereas the automotive trade has been utilizing 3D printing for many years in prototyping, in addition to purposeful components for each the interiors and exteriors of automobiles, TPU permits for the design of really personalised parts, permitting for consumer-specific comforts. Whereas such choices might turn out to be far more detailed sooner or later, right now’s producers are arduous at work not solely utilizing additive manufacturing for vital parts but additionally in specializing in the drivers themselves and creating new luxuries like custom-made headrests and seats. TPU is commonly chosen for these components due to its versatility by way of softness for one half, but hardness and performance for an additional. There are a number of various finishes out there too for automotive functions.

Shopper equipment  

The 3D printing trade is well-known for increasing choices to customers within the space of equipment, primarily as a result of monumental potential supplied by expanded design freedom and the power to customise. That is very true for objects like smartphone instances, permitting clients to fully personalize an merchandise, including thrilling and distinctive touches to a product that’s just about inconceivable for most individuals to dwell with out right now. Not solely that, this stuff are sturdy sufficient to final for years. TPU can be a wonderful alternative for including high quality and customization to extremely purposeful objects like mushy grip programs and rubber mats.

Footwear

3D printing has made a strong affect inside the footwear trade, and on a number of ranges. Designers working from their studios or properties are capable of make artistic new eco-friendly designs on demand and ship them to Shapeways for 3D printing companies. Giant firms are utilizing supplies like TPU to max out designs for epic, futuristic trying trainers with a variety of options meant to propel athletes and on a regular basis wearers ahead by way of consolation and stamina.

There may be additionally the potential for extremely personalised slot in footwear, starting with insoles that may be 3D printed to encourage higher help and balanced gait, in addition to orthotics that may be made to suit and re-sized simply as wanted. With speedy manufacturing in 3D printing, extra sturdy footwear merchandise will be made which might be additionally extra versatile, and lighter in weight. 3D scanning performs a task for a lot of the footwear trade because the wearer’s measurements will be scanned shortly, making unprecedented strides in consolation, relatively than anticipating somebody to suit right into a typical measurement, or someplace in between.

Medical units

One other space the place 3D printing is providing monumental affect, TPU is behind the manufacturing of quite a few medical units bearing complicated, light-weight geometries that will not have been attainable earlier than with conventional manufacturing. Merchandise like braces, prosthetics, and implants will be 3D printed after 3D scans are taken from sufferers, providing them secure, custom-made units which might be capable of stand as much as long-term each day use with out inflicting pores and skin irritation. For youngsters carrying prosthetics or orthotics that is an unimaginable boon, with fittings taking a fraction of the time and with out discomfort. Whereas such units might have taken weeks and even months to reach beforehand, at nice expense, now they are often made shortly–and adjustments will be made to designs shortly additionally.

Robotics

TPU can be appropriate for robotics, and particularly softer functions which can require extraordinarily versatile components like connectors, actuators, and simulated fingers, arms, and flex grippers for performing duties whether or not on a producing manufacturing line or on the particular person degree. This materials can be used for tires and different equipment hooked up to shifting robots, in addition to these which may be performing 3D printing actions on their very own.

Sports activities gear

Due to the protecting nature of sports activities gear, 3D printing expertise with TPU is ready to play a vital function in serving to to stop accidents in gamers. Utilizing lattice buildings for inside energy and unimaginable absorption on affect, 3D printed protecting gear might embody helmets, guards, and extra, all with the potential to be closely custom-made for the consolation and security of the athlete.

Concepts for 3D Printing with TPU? Get Began Now

For sooner turnaround time and extremely custom-made, manufacturing runs at any quantity, contact Shapeways to be taught extra about on-demand 3D printing. Permitting producers to maintain a digital stock of their inventory or spare components, on-demand printing means lowering or saying goodbye to warehouse house altogether. 

Add your design now to get began in 3D printing with TPU.

About Shapeways

Take pleasure in the advantages of this superior expertise and a variety of supplies from Shapeways for 3D printing your creations with accuracy, complicated element, and no minimal or limits by way of mass customization or single half orders. Shapeways has labored with over 1 million clients in 160 international locations to 3D print over 21 million components! Examine case research, discover out extra about Shapeways options, and get instantaneous quotes right here.