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Continuous aeration and homogeneous cake batter mixing with Fristam FS Shear Technology

Eliminating the need for 3 bearing-house mixers through cost-efficient inline retrofit and controlled aeration

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Introduction to the application and industry overview

Industrial cake and dessert production relies on precise control of batter structure, air incorporation and ingredient dispersion to achieve consistent crumb texture, volume and mouthfeel. When scaling to 24-hour continuous production, processors must also ensure equipment durability, hygienic design and reliable aeration performance.

Inline shear blending combined with controlled air injection enables uniform bubble distribution, stable batter rheology and repeatable finished cake quality across large-scale bakery manufacturing.

Customer brief

A major U.S. baking goods manufacturer required a blending solution capable of thoroughly mixing cake ingredients while also dispersing controlled air bubbles to produce a lighter-textured finished cake.

Because the production line was intended to operate continuously around the clock, the processor also needed robust, high-quality equipment able to maintain performance without reliability concerns.

Previously unsuccessful methods

Conventional bearing-house mixers were considered for the application but presented several limitations. Achieving the required mixing and aeration capacity would have required three separate units, each representing a significant capital expense.

This approach conflicted with the processor’s objective of finding a durable yet economically efficient solution for continuous cake batter production.

Previously unsuccessful methods

Fristam’s solution

A Fristam FS Shear Blender in conjunction with an upstream air injection tube. This setup allowed for the controlled introduction of micro-air into the batter. By installing the injection system immediately before the filler, the FS rotor-stator could uniformly disperse the air and homogenize the product just prior to portioning, ensuring a consistent final aeration.

  • Rapid, thorough ingredient homogenization
  • Reliable continuous-duty performance
  • Customizable configuration for specific production needs
  • A dramatically lower capital cost compared with traditional mixers

Trial set-up

1. Cake batter flowed continuously toward the filling stage through the existing production line.

2. A controlled air injection tube introduced precise quantities of air into the pipeline upstream of the Fristam FS shear blender.

3. The batter then entered the FS rotor-stator shear zone, where injected air bubbles were uniformly dispersed and stabilized throughout the mixture.

4. The aerated, homogenized batter exited the shear blender and was delivered directly to the filler.

5. The system operated under continuous production conditions, allowing evaluation of texture consistency, bubble distribution and finished cake quality.

6. Ongoing operation confirmed stable aeration performance, reliable mixing and mechanical durability during 24-hour production.

Fristam’s solution

A successful outcome with the Fristam FS Shear Blender

The FS shear blender successfully delivered uniform ingredient mixing and consistent aeration, producing a cake batter that generated the lighter finished texture required by the manufacturer. The processor continues to operate the system 24 hours per day without experiencing product quality issues or mechanical failures, confirming the FS as a reliable continuous-production solution.

In addition to performance improvements, the Fristam solution achieved substantial capital cost savings compared with the previously considered mixer configuration, providing both technical and financial justification for adoption.

Do you have any questions so far?

Please don’t hesitate to contact our customer support. We would be happy to answer any questions you may have about our case studies or similar challenges, and we will provide effective solutions tailored to your needs.

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Process / Product quality benefits

Process / Product quality benefits

  • Uniform, homogeneous cake batter mixing with stable ingredient dispersion
  • Controlled micro-air distribution delivering lighter crumb texture and consistent mouthfeel
  • Repeatable batter rheology and finished cake structure across continuous production
  • Improved portion consistency and visual appearance at the filling stage
Sustainability benefits

Sustainability benefits

  • Reduced product waste from inconsistent aeration or off-spec texture
  • Lower energy demand per unit of production compared with multi-mixer systems
  • Compact inline equipment footprint supporting efficient plant layout
Financial benefits

Financial benefits

  • Solution meant customer could avoid purchasing multiple bearing-house mixers with a single inline shear solution
  • Significant reduction in overall capital expenditure for aerated batter production
  • Continuous, reliable operation protecting production uptime and reducing maintenance risk
  • Lower long-term operating costs through simplified equipment configuration
Other benefits

Other benefits

  • Hygienic, clean-in-place compatible design suitable for modern bakery production
  • Seamless integration into existing continuous processing lines
  • Proven durability for 24-hour industrial operation
  • Attractive solution for OEM system builders, project engineers and large-scale dessert manufacturers

Similar applications

  • Inline shear blending with controlled aeration is widely applied across industrial bakery and dessert manufacturing where texture, volume and uniform crumb structure are critical quality attributes
  • Comparable processing requirements occur in sponge cakes, muffins, whipped batters, dessert foams and aerated fillings, all of which depend on stable air incorporation and consistent ingredient dispersion
  • Beyond bakery, similar controlled aeration and homogenization principles are used in cream fillings, mousse-style desserts and confectionery systems, where bubble distribution, viscosity control and hygienic continuous processing determine final sensory quality and production efficiency

Frequently Asked Questions

Consistent aeration can be assisted with controlled air injection when combined with inline shear dispersion from an FS Shear Blender.
The Fristam FS shear blender distributes injected air bubbles uniformly through the batter, enabling stable crumb structure and repeatable cake texture at full production scale.

In addition to Mixing & Blending Technology – check out Fristam’s full range of Pumping Technologies.

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