What is pe coated paper ?

What is PE Coated Paper?

PE coated paper, also known as polyethylene - coated paper, is a type of paper that has been laminated with a thin layer of polyethylene (PE).

I. Structure and Manufacturing Process

• The manufacturing process involves applying a polyethylene film to the surface of the paper. This can be done through extrusion coating, where molten polyethylene is forced through a die and onto the paper. The polyethylene layer adheres to the paper, creating a composite material.
• The thickness of the PE layer can vary depending on the intended use of the paper. It can range from a very thin layer for applications where flexibility and printability are key, to a thicker layer for more demanding applications such as food packaging that requires enhanced moisture resistance.

II. Properties

• Moisture Resistance: One of the main advantages of PE - coated paper is its excellent moisture - resistance. The polyethylene layer acts as a barrier, preventing water from penetrating the paper. This makes it suitable for applications where the paper may come into contact with liquids, such as in food packaging (e.g., for ice cream cones, fast - food wrappers) or beverage labels.
• Smooth Surface: The PE coating gives the paper a smooth surface. This is beneficial for printing, as it allows for high - quality, sharp, and vibrant prints. It also provides a nice tactile feel, which can be important for products where the packaging is handled by consumers.
• Flexibility: PE - coated paper is relatively flexible, which makes it easy to fold, shape, or wrap around objects. This property is useful in various packaging applications, such as making pouches or sachets.
• Heat Sealability: The polyethylene layer enables heat - sealing. This means that two layers of PE - coated paper can be joined together by applying heat and pressure, creating a sealed package. This is commonly used in the production of sealed food packages, like snack bags.

III. Applications

• Food Packaging: As mentioned earlier, it is widely used in food packaging due to its moisture - resistance and ability to protect the contents from external elements. It can be used for packaging dry foods, wet foods (with proper sealing), and frozen foods.
• Labels: In the beverage and consumer goods industries, PE - coated paper is often used for labels. The smooth surface allows for clear and attractive printing of brand names, product information, and graphics. The moisture - resistance also ensures that the label stays intact, even if the product comes into contact with water or other liquids.
• Medical Packaging: It can be used in some medical packaging applications where a certain level of moisture - resistance and sterility is required. For example, for packaging non - sterile medical devices or supplies that need protection from moisture during storage.
• 

In conclusion, PE  coated paper is a versatile material with a combination of properties that make it suitable for a wide range of applications, especially those requiring moisture - resistance, smooth printing surfaces, flexibility, and heat - sealability.