Andrew Pace
Sports equipment manufacturer Wilson has unveiled a prototype 3D-printed airless basketball that does not need to be inflated. The ball, which has a see-through lattice structure with hexagonal holes, is designed to bounce like traditional basketballs. It is made from an elastomeric polymer developed by Wilson, which gives it a unique feel. The airless design also overcomes contraction in inflated balls caused by changing environments and temperatures, eliminating the need for an air pump or needle.
| Characteristics | Values |
|---|---|
| Manufacturing technique | 3D-printed |
| Inflation | Airless |
| Inflation mechanism | None |
| Bounce | Similar to traditional basketballs |
| Weight | Similar to traditional basketballs |
| Size | Similar to traditional basketballs |
| Feel | Different to traditional basketballs |
| Durability | High |
| Temperature resistance | High |
| Noise | Much quieter than traditional basketballs |
| Appearance | Different to traditional basketballs |
| Ventilation | Hexagonal holes |
| Ventilation function | Allow air to pass through |
| Material | Elastomeric polymer |
| Color | Customizable |
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What You'll Learn
The ball's lattice structure
The lattice structure of the Airless Basketball is a key innovation that allows the ball to bounce and retain its shape without inflation. Traditional basketballs rely on a bladder filled with air to maintain their shape and provide that signature bounce. This airless design, however, replaces the air-filled bladder with an intricate lattice framework. This lattice is a network of interconnected struts or ribs that form the ball's core.
The struts are designed to be flexible yet resilient, made from a durable, energy-returning material. This material is crucial to the ball's performance as it provides that spring-like effect, storing and releasing energy with each bounce. The lattice structure is carefully engineered to distribute weight and force evenly throughout the ball. This even distribution ensures that the ball maintains its spherical shape and that the force of impact is absorbed and redirected uniformly.
The struts are arranged in a precise pattern, forming a repeating geometric design. This pattern is optimized to provide the best balance of weight distribution, energy return, and overall performance. The open spaces within the lattice allow for a certain degree of compression and flexion, providing that soft, responsive feel similar to a traditional inflated ball. At the same time, the interconnected nature of the struts prevents excessive deformation, ensuring the ball always returns to its original shape.
The lattice structure also contributes to the ball's durability. By eliminating the need for an air bladder, the potential failure points are reduced. The absence of an inflation valve further strengthens the design, creating a seamless and puncture-resistant surface. This lattice framework is also designed to withstand the stresses of frequent and intense use, ensuring that the ball maintains its performance characteristics over an extended period.
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The manufacturing process
The Wilson Airless Gen1 Basketball is a 3D-printed basketball that eliminates the need for inflation by using a lattice framework. The manufacturing process for this innovative ball involves several steps, from design to printing to finishing.
Firstly, the ball is designed using cutting-edge software and 3D modelling techniques. The lattice framework, which serves as the ball's structure, is designed to be strong and durable, eliminating the need for inflation. This framework is made up of a series of nodes and struts, creating a honeycomb-like structure with two layers and a centimeter of depth between them.
Once the design is complete, the ball is printed using industrial-level 3D printing, or additive manufacturing. This process involves using a bed of powder, typically some form of plastic such as TPU, and lasers to form the ball layer by layer until the entire sphere takes shape. The laser "etches" the pattern in two dimensions, and as this process is repeated, the layers build up to create a three-dimensional ball.
After printing, the ball undergoes a finishing process. The powder is removed, and the ball is sealed and dyed using a smoothing technique developed by DyeMansion. This process gives the ball its final colour and a smooth, uniform surface. The ball is then sent for rigorous testing to ensure it meets the required standards for performance and durability.
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The ball's weight and bounce
The Wilson Airless Gen1 basketball is designed to have a similar weight and bounce to a traditional basketball. The ball is made from an elastomeric or elastic polymer, with a lattice structure of hexagonal holes that allow air to pass through. This unique structure eliminates the need for inflation and aims to provide the same performance as a traditional basketball.
The development process of the airless basketball focused on achieving the desired bounce, as this was identified as one of the biggest challenges. Nadine Lippa, Wilson's lead engineer, explained that finding the right material and structure to match the rebound height of an inflated ball was crucial. The lattice design and hexagonal holes enable air to flow freely, contributing to the ball's bounce characteristics.
Reviews of the airless basketball have highlighted that it bounces identically to a pressurised basketball, maintaining the expected rebound height. The ball's bounce is described as nearly silent or producing a soft "whoosh" sound, which is advantageous for players who want to practice quietly without disturbing their neighbours.
The weight of the airless basketball is reported to be roughly the same as a standard basketball. This similarity in weight is achieved through the use of the elastic polymer material and the lattice structure, ensuring that players experience a consistent feel and performance during gameplay. Wilson's design team conducted rigorous testing to ensure that the airless basketball not only bounced like a traditional basketball but also felt and performed similarly.
The innovative design of the airless basketball addresses the issue of deflation in traditional inflated balls due to changes in temperature and environmental conditions. By eliminating the need for inflation, Wilson has created a durable ball that performs consistently over time, providing players with a reliable and maintenance-free basketball experience.
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The ball's design and colour
The Wilson Airless Basketball features a unique design that sets it apart from traditional basketballs. The ball is 3D-printed as a single solid piece, featuring a lattice structure of small, hexagonal holes that allow air to pass through. This design not only eliminates the need for inflation but also addresses the issue of ball deflation due to manufacturing defects, blunt force, or air escaping over time. The lattice structure and hexagonal holes are essential to achieving a bounce comparable to that of a standard basketball.
While the ball has the same weight as a traditional basketball, it feels different to the touch due to the unique material used in its construction. This material, an elastomeric or elastic polymer, is highly elastic and contributes to the ball's distinct look and feel. The ball's surface, resembling a honeycomb, is created through the 3D printing process, resulting in a complex shape that differs significantly from the smooth surface of conventional basketballs.
The colour of the Airless Basketball is also noteworthy. The initial prototype was white, but it underwent a dying process to achieve a total-black shade. Wilson has since introduced additional colour options, including Jet Black, Natural, and Brown, allowing players to customise their ball's appearance. Each ball in the Gen1 series is also inscribed with a number, indicating its limited-edition status.
The design and colour of the Airless Basketball reflect Wilson's innovative approach to sports equipment. By utilising 3D printing technology and unique materials, they have created a ball that challenges conventions and offers a new experience for players. The absence of the need for inflation and the distinct look and feel of the ball showcase Wilson's focus on combining performance and functionality with modern design aesthetics.
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The ball's durability
The durability of the airless basketball is one of its key features. The ball is made from an elastomeric polymer, a highly elastic material that is designed to withstand the typical wear and tear of basketball games. The lattice structure, with its hexagonal holes, is also key to the ball's durability. This structure allows air to pass through the ball, enabling it to bounce like a traditional basketball, but without the need for inflation. The airless design also prevents the ball from deflating over time due to manufacturing defects, air escaping through the valve, or blunt force impact.
Wilson, the manufacturer, conducted rigorous testing on the prototype, including hitting it with a baseball bat, and found that the ball was extremely durable and difficult to damage. The lattice structure and the material used to create it play a significant role in the ball's durability and bounce. While the exact composition of the material is not known, it is described as "squishy and bouncy," contributing to the ball's ability to withstand impact and retain its shape.
The airless basketball also addresses the issue of contraction in inflated balls caused by changing temperatures. Traditional basketballs can lose air and play like they are flat when exposed to cold temperatures. The airless design eliminates this problem, ensuring that the ball maintains its shape and performance regardless of the environment.
While the ball has been praised for its durability, Wilson acknowledges that there is still work to be done before it is commercially released. The company is committed to refining the design and ensuring that it meets the expectations of players in terms of performance and feel. The airless basketball is expected to be more sustainable than traditional basketballs, and its unique design and technology have opened up new possibilities for innovation in sports equipment.
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Frequently asked questions
An airless basketball is a ball that does not need to be inflated. It has a lattice structure with hexagonal holes that allow air to pass through.
The airless basketball is made from an elastomeric polymer developed by Wilson. The lattice structure and hexagonal holes allow air to flow through the ball, helping it to bounce.
The airless basketball will never deflate and does not need to be pumped up before use. It also has a quieter bounce than a traditional basketball.
