Barrier Coating Papers for Packaging

The role of barrier coatings in packaging products has been steadily shifting and evolving. There has been an increased interest in packaging with recyclable barrier coatings to offer more sustainable, eco-friendly options. The majority of barrier coatings are employed by the food processing and packaging industries. In these applications, food-grade barrier coatings are used as moisture barriers, oil barriers, and oxygen barriers. 

Barrier coatings for paper substrates prevent water, water vapor, solvents, oils, fatty acids, etc. from getting through the material under a range of temperatures and conditions. These coatings literally as the name implies act as a physical barrier against moisture and grease, for example. This impermeability has seen it being used in a wide range of industries, especially in food, pharmaceuticals, cosmetics, etc. It not only provides a renewable alternative to the traditional method of using plastic as a barrier material, but a more versatile and cost-efficient one as well.  

Barrier papers have increasingly been adopted as the preferred packaging material for the benefits they bring to the business: 

Protection  

Barrier papers are strong enough to withstand the demands of transporting the product from the production facility all the way to the consumer. 

Barrier papers with their sturdiness can withstand the extreme conditions of transportation and safeguard the enclosed items against any damage at the same time. For instance, they maintain their physical durability even in the humid environment of transportation. It helps to keep moisture from getting through them and protects the moisture sensitive components such as flour, masala, etc. In addition to that, they also keep foods like toast from going stale by preventing the moisture from getting out and preserve its freshness.  

Shelf-appeal 

Barrier papers provide the brands with the possibility to develop the best look and feel that aligns with their intended vision for the product. For instance, papers which have a two-sided coating provide the designer with a printing surface to use sharp lettering, vivid colours and good visuality to enhance the shelf appeal of the packaging.  

Recyclable 

These barrier coatings applied on the paper or paperboard are either water-based polymer emulsions or solid biowaxes. Along with the green credentials of coatings, the paper and board coated with them typically are repulpable, recyclable, compostable and biodegradable as well.  

The apparent shift to sustainable packaging solutions, especially toward recyclable barrier coatings is being driven primarily by the growing awareness regarding environmental issues among consumers. These barrier papers preserve the enclosed food against any damage and thereby increasing its shelf life. They are also used in packaging electronics products as they keep moisture from permeating inside which can damage humidity sensitive components.  

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