Injection molding or 3D printing? Why decision-makers today strategically combine both

Sustainability requirements, increasing cost pressure, volatile markets, and shorter innovation cycles are presenting companies with new challenges. Production decisions are no longer purely technical issues, but are becoming strategic decisions. It is becoming increasingly clear in the industry that the focus is no longer on individual machines, but on how production strategies can be made flexible and future-proof.

For many years, the roles were clearly defined. Injection molding stood for efficient series production with stable volumes, while additive manufacturing was used for prototypes and special applications. This clear distinction is increasingly blurring. Markets are less predictable and product life cycles are shorter. Today, companies are confronted with very different requirements within a single production portfolio.

Production landscapes are becoming more diverse—and more strategic. Combined approaches are coming into focus in order to meet different requirements in parallel.

In the past: stable markets, predictable quantities, clear assignment of a technology to an application.

Today: volatile demand, shorter product life cycles, and new regulatory requirements call for flexible, combinable production strategies.

Injection molding in industrial plastics processing remains the backbone of the industry, especially where large quantities, high process stability, and reproducible quality are required. At the same time, there is a growing need for more flexible solutions, for example for smaller batch sizes, in product development, or when demand fluctuates greatly.

This is where additive manufacturing comes into play in the plastics industry. It enables rapid adjustments, shortens development times, and allows for economical production runs in areas that are difficult to cover with traditional series processes. The decisive factor here is not either/or, but rather the targeted use of both processes in line with specific requirements.

With growing technological diversity, conflicting goals are also increasing. Efficiency is pitted against flexibility, short-term cost targets against long-term investment security. When making investment decisions in particular, companies must weigh up whether to focus on maximum capacity utilization with stable volumes—or consciously factor in flexibility in order to be able to respond to market changes.

Digitalization in plastics processing plays a central role in this area of tension—as a connecting element between processes, machines, and data. Statements from the industry make it clear that digitalization is increasingly seen as a prerequisite for strategic production decisions:

“Digitalization is another very important topic for all of our customers, and that in a certain way, push on us the responsibility of helping them in this transition,” says Stefano Chiozzini, Closure Business Unit Manager at SACMI. This makes it clear that digitalization is not just a matter of efficiency, but a prerequisite for making different production strategies manageable in the first place.

In practice, companies are responding to this with different strategies. Instead of focusing exclusively on maximum capacity utilization, they are investing specifically in flexibility—for example, through modular plant concepts or the addition of additive processes to existing series processes. The decisive factor here is not so much the individual technology as the question of how quickly production capacities can be adjusted, risks distributed, and new applications developed.

Combined production strategies are becoming increasingly important, especially where requirements are unclear: with fluctuating quantities, new materials, or increasing regulatory requirements. In such scenarios, supplementing traditional processes with additive manufacturing can reduce risks and expand the scope for action—for example, when transitioning from development to series production or in uncertain market conditions.

Nicolai Lammert, General Manager of YIZUMI Germany, also describes this approach as a response to multifactorial challenges. Customers rarely have just one problem, but must deal with different requirements simultaneously. Accordingly, the aim is to combine different technologies in such a way that they together deliver the greatest possible benefit.

What is emerging here is a fundamental change in perspective. Production decisions are increasingly being understood as strategic portfolio decisions. Technological diversity is becoming a management task—not as an end in itself, but as a means of responding flexibly to market changes.

K 2025 clearly demonstrated how diverse the paths to this goal are. It shows that sustainable plastics production depends less on individual technologies than on the ability to combine them sensibly and think strategically.

The combination of injection molding and 3D printing exemplifies a broader trend in the plastics industry: away from isolated solutions and toward integrated production strategies. The decisive factor is not which process dominates, but how technologies can be combined to meet specific requirements.

The video “Conversations at K” uses concrete quotes from exhibitors to show how differently production strategies are conceived today—from optimized injection molding processes to strategic supplementation through additive manufacturing.

This article was created with the assistance of AI tools.