Coated barrier paper is a kind of specialty paper that is coated with one or more layers of specific materials (e.g. plastic film such as polyethylene, polypropylene, etc. or special chemicals) on the surface of the paper to improve its barrier performance against external factors such as gases, liquids, oils and greases. This treatment makes ordinary paper with better waterproof, oil, moisture, gas and other functions, thus greatly expanding the scope of application of paper. Coated barrier paper have the following features:
- Enhanced protection: The most significant feature is that it can effectively prevent moisture, grease and other liquids from penetrating into the interior of the paper, and also reduce the transmission rate of oxygen and other gases to maintain the freshness of the contents.
- Environmentally sustainable: Compared with pure plastic packaging materials, coated barrier paper is more environmentally friendly, easy to recycle and reuse, in line with modern society's demand for green packaging.
- Good printing suitability: After special treatment, the coated paper still maintains good flatness and smoothness, which is suitable for a variety of printing processes, including offset printing, flexo printing and so on.
- cost-effective: compared with the use of plastic or other synthetic materials, the use of coating technology can ensure performance while reducing production costs.
- Diversified function customization: According to the needs of different application scenarios, the coating composition can be adjusted to achieve different levels of barrier effect to meet the requirements of food, pharmaceuticals and other industries.