Grease Oil Proof Paper

Grease oil-proof 1-side coated paper is commonly used in applications where resistance to oil, grease, or moisture is important. It is designed to provide a protective barrier on one side of the paper while maintaining the natural characteristics of the paper on the other side. Here’s a detailed description and specifications for such paper:

1. Material Composition:

   • Base Paper: Usually made from bleached kraft pulp, or a mix of virgin and recycled pulp. The base paper is chosen for its strength, durability, and ability to hold coatings effectively.
   • Coating: A specially formulated coating (typically polyethylene or a similar material) is applied to one side of the paper. This coating provides the oil and grease resistance.

2. Coating Side:

   • One side of the paper is treated with an oil- and grease-resistant coating, while the other side remains uncoated, offering a more natural or porous surface.

3. Thickness:

   • Base paper thickness: Ranges from 60 to 200 gsm (grams per square meter).
   • Total thickness (with the coating): Can vary depending on the type of coating applied, but typically around 80 to 250 gsm.

4. Coating Material:

   • Can be made of polyethylene, waxes, or other water/oil-repellent substances. Polyethylene-coated papers are the most common in this category because they provide superior grease and oil resistance.

5. Resistance to Grease/Oil:

   • The coating makes the paper highly resistant to grease, oils, and moisture, which is ideal for food packaging, bakery wrapping, and other food-related applications.

6. Moisture Resistance:

   • The coated surface reduces the paper's absorbency, preventing it from getting soggy or weak when exposed to oils, grease, or liquids.

7. Applications:

   • Food Packaging: Used in fast food wrappers, burger wrappers, and bakery packaging (e.g., pizza boxes, sandwich wraps).
   • Industrial Applications: Can be used to wrap machinery parts or in areas where oil and grease resistance is crucial.
   • Takeaway Packaging: Common in the foodservice industry for items like fried foods, chips, and greasy foods.

8. Finish:

   • Matte or Gloss Finish: The coated side can either have a matte or glossy finish, depending on the intended aesthetic and application.

9. Color:

   • Often white, but can also be brown or other colors depending on the base paper and coating used.

10. Environmental Considerations:

• The paper may be recyclable, compostable, or biodegradable if it uses eco-friendly coatings. However, not all greaseproof papers are compostable, especially those with synthetic coatings.

Grease oil-proof 1-side coated paper is specifically designed for applications where protection against oils, fats, and other greasy substances is needed. It typically has a smooth, glossy appearance on the coated side, which offers a non-porous, water-resistant surface that prevents the absorption of grease and oil. The uncoated side, usually rougher, may come into contact with the product or item being wrapped, while the coated side protects the paper from becoming saturated.

In food packaging, this paper is widely used to wrap items like burgers, fried foods, pizza, sandwiches, and baked goods, as it helps maintain the integrity of the packaging while offering a hygienic and grease-resistant barrier. The paper's strength is enhanced by its coating, allowing it to handle high-fat contents without tearing or losing its form.

If you need any more detailed specifications or have a particular requirement for this material, let me know!