Milk Bottling & Liquid Dairy Filling Machines – USA & Canada
Our equipment features aseptic design and is ideal for a variety of dairy shelf-life requirements, such as ESL (Extended-Shelf-Life) milk and cream applications.
Our bottling machines use Net Weight Filling Technology, which is ideal for liquid dairy and milk packaging processes that demand high levels of hygiene and accuracy.
With over 45 years serving the North American dairy market and global expertise dating back to our founding in 1969, Serac ensures local support and world-class manufacturing. We are the trusted source for high-quality dairy filling and bottling equipment.
For dairy producers, product giveaway is a major source of lost profit. Our net weight filling technology is the solution. It provides high accuracy, ensuring you don’t overfill, while our hygienic design guarantees product safety.
| ✓ Superior Accuracy |
Delivers a high accuracy (standard deviation, or sigma) of 1g per 1000g (0.1%). This means 99.7% of 1kg fills are within a ±3g range (997g to 1003g). This accuracy is independent of product temperature, aeration, or foam. |
| ✓ Capacity & Speed | Medium to high-speed rotary configurations, from 3,000 to 50,000+ bottles/hour. |
| ✓ High Flexibility |
Handles a massive range of product recipes and container formats, including a 20x volume range on the same machine. |
| ✓ Hygienic Design |
Meets 3-A Sanitary Standards and USDA requirements with automatic CIP cleaning. |
Choose Net Weight technology when you:
For more details of Serac milk bottling system capabilities, click on each section below:
To ensure product safety, we offer Packaging Decontamination Treatments:
| Decontamination Treatment | Bottle | Cap | Alu Foil |
|---|---|---|---|
| Wet Peracetic Acid | Yes | Yes | |
| Controlled Dry H₂O₂ | Yes | Yes | Yes |
| Pulsed Light | Yes | Yes | |
| BluStream® | Yes | Yes | Yes |
| Ozonated Water | Yes |
Best for:
Product Handling:
The design of our filling and capping machines are dependant of the specificities of the dairy products to be filled.
| Dairy Specifities | Shelf-Life | Distribution | Bottling Application |
| Fresh Pasteurized Milk | 7 to 28 days | Chilled | Clean Filler |
| ESL Milk | 30-45 days | Chilled | Ultra-Clean Filler |
| ESL Milk + | 60 – 120 days | Chilled | Ultra-Clean Filler |
| UHT Milk | 90 – 360 days | Ambient | FDA-Approved Aseptic Filler |
Materials:
Serac also offers: PET Blower-Filler-Capper Multiblock
On-site PET bottle blow moulding delivers significant operational advantages:
Formats:
Sizes:
Heat Sealing :
Overlid Options:
Our dairy filling machines feature an advanced, easy-to-use control center for your entire milk bottling line.
Serac Inc designs, engineers and builds machines in the USA. Our proximity is enhanced by our international presence & expertise, allowing us to offer unmatched services at the highest standards across the Americas.

Our factory in Carol Stream, IL is open for Visits.
📍 View Serac Inc on Google Maps
To book a factory visit: [email protected]
To inquire about our solutions: Fill in our contact form here.
To get technical support of After-Sales service: Visit this page.
Overfilling to stay compliant means “giveaway” and it can cost tens of thousands. Net Weight filling is the solution to reduce this cost.
Sample Case: The Cost of Product Giveaway
*Using assumptions of production & cost
Product & Cost: Whole Milk @ $1.00 per kg
Annual Operation: 300 days/year (6 days/week × 50 weeks)
Daily Production (before calculating Downtime):
Total Annual Production: 28.8 Million containers
Target weight: 1,950 grams per container
Based on this production volume, the only variable is the filler’s accuracy:
|
|
A note on accuracy: Net Weight fillers typically achieve 0.10% accuracy (e.g., ±1g per 1,000g target). For larger format containers like this 64 fl oz example, accuracy can improve further — in this case to approximately 0.08% (±1.5g per 1,950g). Actual performance depends on your specific product recipe and viscosity.
This is an illustrative example. Actual savings vary based on your specific operation parameters.
The cost of a milk filling machine depends on your specific project. The main factors include:
Please contact us with these details (click here) and our US-based team will provide a detailed estimation.
Our machines are designed for high hygiene and flexibility to minimize downtime. Typical non-production times are:
Note: The data is generic; actual values vary based on machine type, product recipe, usage patterns and local regulations.
Serac machines are designed for reliability and longevity. With proper preventative maintenance (which our HMI can help you schedule), our machines have a typical lifespan of 20 years or more in a demanding dairy production environment.
Yes. Our milk filling machines can integrate seamlessly with your existing equipment.
For new projects, we can also provide a full turnkey packaging line, including blow-molders, unscramblers, conveyors, labelers, sleevers, case packers, palletizers, and more.
For dairy products with complex, heterogeneous recipes and formats, volumetric cup filling solutions from Serac are the optimal match. This is also the recommended technology when your product viscosity exceeds 40,000 cPo.
Our volumetric cup filling and sealing machines are engineered to handle:
Our solutions accommodate all container types (Round and rectangular cups in PS/PP/PET, Carton, Paper), offering scalable speeds: 800–6,000 cups/hour (rotary fillers) & up to 60,000 cups/hour (linear fillers)
Discover how our volumetric technology can help you with innovative, complex recipes that command a premium price. Visit our dedicated page for yogurt filling solutions here
Yes. While our primary factory is in the USA, our North American service team provides full support for our Canadian customers. This includes dedicated installation, commissioning, maintenance, and technical support.