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Case Study

FDM models reduce time to market for new spoonable zero-calorie sweetener.


Truvia jarred packaging,

3D printed models play a critical role in the design process.

Silgan Plastics is a leader in the design and manufacture of plastic bottles, jars, tubes, caps, and fitments for the food, health care, personal care, and household markets. Silgan Plastics is an operating company of Silgan Holdings, a leading manufacturer of consumer goods packaging products with annual net sales of $3.1 billion in 2010.

 

When Cargill made plans to introduce a spoonable version of its Truvia™ zero-calorie natural sweetener, it asked the Silgan Plastics’ Creative Design Services group to develop an innovative container. Cargill was looking for a 9.8 ounce rigid, recyclable container that would allow consumers to conveniently dip, spoon or sprinkle Truvia in quantities of their choosing. The package needed to fit the average retail shelf and be sufficiently distinctive and attractive so that consumers would want to display it on their table or countertop.

FDM models play a critical role in our design process by allowing customers to evaluate a 3-Dimensional model to take the guesswork out of the design process.

The Truvia package design ready to be rendered in 3D and ready to be 3D printed.

The Silgan Plastics design team evaluated dozens of possible alternatives using sketchpads and design software and finally decided on the 10 best design concepts. In the past, Silgan Plastics would have hired a subcontractor to fabricate plastic models from a thermoformed mould or machine them from a suitable material. The cost for each prototype would have been about $750 and the lead time to produce all 10 prototypes would have been roughly one month.

 

“Our customers want to get their products to market quickly and begin generating revenues,” said Stephen Kocis, Creative Design Services Manager for Silgan Plastics. “We invested in three Stratasys Fused Deposition Modelling (FDM®) machines because FDM prototypes provide the accuracy and detail needed for evaluation by customers of alternative concepts,” Kocis said. “FDM machines are also affordable and can easily be used in an office environment.”

 

Silgan built FDM prototypes of the 10 design concepts over a 48-hour period at a cost of $30 in materials and $270 in FDM machine time and overhead for each. The Truvia team visited the Silgan Plastics design centre where they viewed and handled the prototypes. The team narrowed their selection to a few designs and suggested refinements. “FDM models make it much easier to visualise and evaluate the functionality and ergonomics of a proposed design,” Kocis said.

Silgan Plastics revised the designs and made new FDM prototypes. Tweaking and discussions continued until the Truvia team selected the final package. As the design was finalized for production, Silgan Plastics used the FDM models to check container size and fill levels, evaluate decorating methods, validate distortion in the shrink sleeve graphics and evaluate the mouldability of the design.

 

Consumers and retailers have responded well to the new package. At fabfindfoodie.com, one reviewer said: “I love the new Truvia spoonable container. It’s so handy to just pop the top and grab a spoonful of Truvia for my morning coffee or a glass of iced tea in the afternoon. Now instead of having to open a packet every time, all I need is a spoon.” Kocis concluded: “FDM models take the guesswork out of the design process.”

Truvia jarred packaging,

Silgan Plastics uses FDM 3D printed packaging models to reduce time to market for new spoonable zero-calorie sweetener by Cargill.

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