A practical production route
Use the eight stages below to compare the complete route for your product, from preparation and pack handling through to dispatch. For raw pet food, the critical issues are bridging, blocked check valves, settling, damaged inclusions and variable piece count.
Define the product window
Measure the production range for raw pet food: fill volume or weight, density, viscosity or flowability, temperature, largest inclusion, foam, chemistry and shelf-life process. Select equipment against the worst case, not the easiest sample.
Prepare and feed consistently
Prepare raw pet food to a repeatable specification and supply the filler through an agitated hopper or vessel that keeps inclusions evenly distributed. Control batch-to-batch variation and avoid long, restrictive or difficult-to-clean pipework.
Apply the required treatment
Keep the solids or inclusions in raw pet food evenly distributed with suitable agitation or recirculation. Confirm the largest particle can pass every valve, hose and nozzle.
Prepare the empty pack
Inspect empty wide-neck glass jars for damage, contamination and dimensional variation. Rinse, air-clean or sterilise only where the product risk assessment and packaging specification require it.
Fill accurately and cleanly
Use a large-port piston, lobe, rotor or progressive-cavity filler. Size valves, hoses and nozzles around the largest inclusion and avoid shear damage. Set the nozzle and container handling so the outside of the wide-neck glass jars remains clean for closing and labelling.
Close or seal the pack
Apply vacuum or twist-off lids with controlled headspace and closure torque. For hot-filled packs, confirm the cooling profile produces the required vacuum and tamper-button response.
Label, code and verify
Apply wrap-around, front-and-back, top or tamper-evident labels as required by the wide-neck glass jars. Add batch/date coding and use vision or barcode checks where label mix-up is a material risk.
Inspect and pack for distribution
Check fill quantity, pack integrity, code and presentation before accumulating or case packing. Confirm the finished wide-neck glass jars survives handling, sleeve wrapping, case packing, palletisation and transport.
Equipment options for raw pet food
These machine types provide an initial route. Dose range, contact materials, output, utilities, change parts and controls should be agreed after a representative product and pack trial.
Recommended filling routeRotor-pump filler with mixing hopper
A practical starting point for raw pet food: large-port piston, lobe, rotor or progressive-cavity filler with product-specific contact parts and controls.
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Closing and sealingSteam vacuum capping
Apply suitable jar lids and create a controlled vacuum on validated hot-filled products.
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Labelling and codingAutomatic labelling system
Apply labels and traceability data to wide-neck glass jars, with inspection where mix-up risk justifies it.
View Lancing solutionsEngineering, safety and quality controls
Product behaviour
Test viscosity, density, foaming, particle size or flowability using production-representative raw pet food. Size valves, hoses and nozzles around the largest inclusion and avoid shear damage.
Operator protection
Guard access to moving tooling and control exposure to raw pet food. Address bridging, blocked check valves, settling, damaged inclusions and variable piece count in the machinery and process risk assessment.
Cleaning and changeover
Plan for tool-free access to large-bore valves and dead-leg-free product routes. Confirm recovery, flushing, allergen or chemical segregation and safe disposal before purchase.
Pack validation
Run the actual wide-neck glass jars and vacuum or twist-off lids through filling, closing, labelling and transit tests. Supplier drawings alone do not show real production variation.
Selecting equipment by weekly throughput
| Weekly volume | Typical equipment level | Planning approach |
|---|---|---|
| Under 500 | Desktop or manual-assist | Prioritise low changeover time, flexible tooling and safe repeatability. |
| 500–2,000 | Compact semi-automatic | Separate filler, closer and labeller can provide a practical step up without a full conveyor line. |
| 2,000–10,000 | Two-head or compact inline | Use controlled product feed, powered conveyors and automatic closing or labelling where labour is the constraint. |
| 10,000+ | Multi-head automatic line | Balance every station, include accumulation and specify inspection, rejection and end-of-line handling. |
Prove the line with your product and packaging
The most useful test uses the final raw pet food, wide-neck glass jars, vacuum or twist-off lids, label and code. Include the most difficult size or formulation, not only the easiest product.
Discuss this applicationCommon questions about filling raw pet food
What filling machine is best for raw pet food?
A large-port piston, lobe, rotor or progressive-cavity filler is the usual starting point because raw pet food behaves as a viscous product containing pieces, fibres, seeds or suspended solids that needs an unrestricted product path. The actual choice depends on dose, temperature, inclusions, required accuracy, cleaning regime and output.
Can raw pet food be filled into wide-neck glass jars?
Yes, provided the wide-neck glass jars, vacuum or twist-off lids and product are compatible. Test dimensional variation, fill temperature, headspace, leakage, closure performance, label adhesion and distribution before specifying the line.
Should raw pet food be filled hot or cold?
Raw PET Food is commonly handled with controlled to preserve both flow and particulate integrity. The final temperature must come from the validated formulation, preservation method, pack material and closure process.
How do you prevent pieces settling in raw pet food?
Use an agitated vessel or hopper, minimise stagnant pipework and select large-bore valves and nozzles based on the largest inclusion. Prove both dose weight and piece distribution.
How should wide-neck glass jars be closed after filling raw pet food?
Apply vacuum or twist-off lids with controlled headspace and closure torque. For hot-filled packs, confirm the cooling profile produces the required vacuum and tamper-button response.
What output can a raw pet food filling line achieve?
Output depends on dose size, pack handling, fill time, closure method, cleaning and operator loading. As a planning guide: desktop equipment suits under 500 packs/week, compact systems 500–2,000, two-head lines 2,000–10,000 and multi-head systems 10,000+.
What samples are needed to test raw pet food?
Supply representative raw pet food, the complete wide-neck glass jars, vacuum or twist-off lids, labels and any coding specification. Include the full product range, especially the highest viscosity, largest inclusion or most difficult pack size.