Margarine Filling Line for Plastic Bags in Cartons

Short Description:

The margarine filling line designed for plastic bag-in-carton packaging is an advanced, fully automated system tailored for efficient and hygienic production of soft or semi-solid margarine, shortening, chocolate or sauce product. This packaging format is widely used for industrial, food service, or household portions where the product is extruded from a plastic bag inside a protective carton box.

Send email to us

Product Detail

Product Tags

Key Process Stages:

1 Bag making & inserting
The system begins with tubular film, then sealed to be bag with mouth open, and then positioned for filling.
2 Margarine Dosing (margarine filling machine or shortening filling machine or chocolate filling machine)
The filling nozzle is designed to prevent smearing and to ensure a clean cut-off, with optional gas flushing (e.g., nitrogen) to minimize oxidation.
3 Bag Sealing
After filling, the bag’s open end is sealed using heat sealing bars. This creates an airtight closure, preserving product freshness and extending shelf life. The seal integrity is often checked with an inline leak detector.
4 Carton Erector & Loading
Simultaneously, flat carton blanks are erected into rectangular boxes. The filled and sealed plastic bag is gently placed into the carton — either manually or via a robotic pick-and-place system. For fully automated lines, an integrated loader pushes the bag into the carton without damaging the seal.
5 Carton Sealing & Coding
The carton flaps are closed using hot melt glue or tuck-in designs. An inkjet or thermal transfer printer applies date codes, batch numbers, and barcodes onto the carton. Optional checkweighers verify correct fill weight.
6 Case Packing & Palletizing
Individual cartons may be collated and packed into larger shipping cases, which are then palletized by a robotic arm. Finally, the pallet is stretch-wrapped and labeled for distribution.

Key Benefits:

Product protection: The plastic bag acts as a barrier against moisture and oxygen, while the carton provides structural integrity.
Hygienic design: CIP/SIP-compatible components prevent contamination.
Flexibility: Suitable for different bag sizes (5 kg to 50kg) and carton dimensions.
High efficiency: Speeds up to 16 bags/min are achievable on modern lines.

This margarine filling line/shortening filling line/chocolate filling line is ideal for margarine/shortening/chocolate producers seeking a robust, sanitary, and versatile solution for retail and bulk packaging.