How do they seal cereal boxes?

1. Folding: The box is pre-folded and scored (creased) to create the flaps that will form the top and bottom seals.

2. Gluing: A hot melt adhesive is applied to the flaps. This adhesive is usually a thermoplastic that is applied in a thin strip along the edges of the flaps.

3. Sealing: The flaps are folded over and pressed together, applying pressure to ensure the adhesive bonds securely. This creates a strong, airtight seal.

Here's what makes this process effective:

* Speed: This method is incredibly fast, allowing for high-volume production of cereal boxes.

* Cost-effectiveness: Hot melt adhesives are relatively inexpensive and efficient.

* Reliability: The adhesive bonds strongly, ensuring the box remains sealed and protects the cereal.

Some additional details:

* Types of Adhesives: Different types of hot melt adhesives can be used, depending on the needs of the cereal manufacturer. Some adhesives might be formulated to be heat-resistant for boxes that will be exposed to higher temperatures.

* Machines: Specialized machines are used to apply the adhesive, fold the flaps, and press them together to create the seal. These machines are highly automated and efficient.

So, the next time you open your box of cereal, remember the simple yet effective process that keeps your breakfast safe and delicious!