Food Industries
Industries We Serve
Food Industries
Corrugated boxes are essential in the food industry due to their durability, lightweight nature, and food safety compliance. They are used for packaging, transportation, and storage of food products while ensuring quality and safety.
Advantages of Corrugated Boxes for Food Packaging
- Lightweight but Durable
- Cost-Effective
- Environmentally Friendly and Recyclable
- Customizable Design (Branding and print options)
- Moisture Resistance Options (Wax coating or plastic lining).
Types of Corrugated Boxes for Food Industries
They are used for packaging, transportation, and storage of food products while ensuring quality and safety.
Manufacturing Process of Corrugated Boxes
- Kraft Paper: High-strength kraft paper (linerboard) is sourced, often made from softwood trees for durability.
- Fluting Medium: The wavy inner layer (medium) is usually produced from recycled or virgin paper.
- Adhesives: Food-safe, starch-based glues are used to bond the layers of the box.
- Food-Grade Ink: Non-toxic inks are selected for printing on the boxes.
The kraft paper is converted into corrugated boards using a corrugator machine. The steps include:
- Heating: The paper is passed through heated rollers to soften it for processing.
- Corrugating: The fluting medium is passed through grooved, heated rollers to form the wavy, corrugated structure.
- Lamination:
- A linerboard is glued to one side of the corrugated (fluted) medium.
- The second linerboard is glued to the other side, creating a single-wall board.
- For stronger boxes, multiple corrugated layers can be added (double-wall or triple-wall boards).
- Bonding: Food-safe starch-based adhesives are applied to ensure a firm bond between the layers.
- Drying: The bonded board is passed through a heated drying section to cure the adhesive.
Once the corrugated board is produced:
- Slitting: The large sheets of corrugated board are cut to specific widths.
- Creasing: Crease lines are created using a rotary die cutter to allow easy folding of the boxes.
For food industries, food-safe, water-based inks are used to print branding, product information, or handling instructions. The printing methods include:
- Flexographic Printing: Commonly used for corrugated boxes as it works well with large areas and simple designs.
- Digital Printing: Used for custom or high-quality, detailed printing.
- Using a die cutter, the boards are shaped into the desired box design.
- For specialized food boxes (e.g., pizza boxes), die-cut machines create custom shapes with folding tabs and vents.
- The pre-cut corrugated boards are folded along the creases to form box shapes.
- Food-safe adhesives or stitching are used to secure the edges.
- For boxes requiring durability, the edges may be stapled or glued using automated machines.
Corrugated boxes for the food industry must meet stringent standards. Key quality checks include:
- Box Strength: Ensuring the box can handle weight without collapsing (Burst and Compression tests).
- Food Safety: No toxic residues, contamination, or odors.
- Moisture Resistance: For food boxes, coatings may be applied to resist moisture or grease (e.g., wax or polyethylene lining).
- Printing Quality: Ensuring clean and compliant food-grade printing.
- Once the boxes are manufactured and checked, they are flattened, stacked, and bundled.
- Boxes are shipped flat to food manufacturers to save on transportation costs.
- Food producers assemble the boxes before filling them with food products.
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