Mittiway’s MTW Butter Bag-in-Box Packaging Line is designed for bulk butter and fat products that require hygienic filling, reliable inner-bag sealing, and stable case handling. The line integrates automatic case erecting, liner bag inserting, butter filling, bag top sealing, case settling, case sealing, and palletizing into one continuous workflow.

Whether used as individual machines or as a fully integrated system, the MTW line helps butter manufacturers improve packaging consistency, reduce product leakage, and stabilize downstream case sealing and palletizing.

Butter-Specific Packaging Advantages

1. Hygienic design for butter and high-fat products

The system is built around food-grade packaging requirements, with smooth contact parts, cleanable structures, and easy-to-maintain sealing components. This makes it suitable for butter, margarine, ghee, and other high-fat bulk products.

2. Automatic liner bag inserting inside cartons

The MTW-T50 Automatic Bag Inserter for Carton automatically picks, opens, stretches, and inserts the inner liner bag into the erected carton. It ensures the bag is properly positioned before butter filling, reducing the risk of bag misalignment, material contamination, and sealing failure.

3. Stable bag top sealing after butter filling

The MTW-TF50 Automatic Bag Sealing Machine for Carton lifts, folds, and seals the filled inner bag inside the carton. For butter and grease products, reliable heat sealing is critical to preventing oil leakage and maintaining packaging integrity through later handling.

4. Case settling for compact and stable packs

After filling, the case settling or vibration station removes voids inside the carton, settles the butter evenly, and reduces the risk of bulging cases. This supports smoother case closing, stable palletizing, and safer transport.

5. Compatible with automatic packaging line integration

The machines can operate independently or connect with upstream and downstream equipment, including:

• Case erector

• Carton bag inserter

• Butter filling machine

• Bag top sealer

• Case settling station

• Case sealer

• Palletizer

This flexibility allows butter producers to build a complete automated packaging line according to their capacity and factory layout.

Typical Workflow for Butter Packaging

Case Erecting → Carton Bag Inserting → Butter Filling → Bag Top Sealing → Case Settling → Case Sealing → Palletizing

Why Buyers Choose This Line

1. Butter and fat-friendly structureDesigned for bulk butter packaging with attention to oil leakage, hygiene, and sealing reliability.

2. Stable bag-in-box operationFrom liner bag insertion to bag top sealing, the system reduces manual handling and improves packaging consistency.

3. Less bulging cases and better pallet stabilityCase settling helps compact the butter inside the carton, supporting better case sealing and safer palletizing.

4. Flexible line configurationMachines can be used separately or combined into a full automatic packaging line.

5. Suitable for industrial-scale productionThe line is built for continuous operation in food manufacturing environments, with easy maintenance and practical changeover features.