Cosmetics & Chemicals

SiO₂ barrier coating for
cosmetic and chemical packaging

The cosmetics and chemicals industries place high demands on packaging that must protect against moisture,
oils and chemical substances.
With NP® SiOPack® , a water-based, inorganic SiO​ thin-film technology is available that provides paper, carton and moulded fibre materials with a functional barrier layer that is environmentally responsible, food-contact compliant and sustainable.

The technology replaces conventional polymer-based coatings and enables the production of recyclable and compostable packaging suitable for cosmetic products and chemical substances — without compromising functionality or safety.

Functional principle of the coating

NP® SiOPack® uses a water-based sol-gel process to apply an ultra-thin SiO​ layer (5-100 nm) to the paper surfaces.
After drying, this layer forms a functional surface combining hydrophobic and oleophobic properties.
The coating remains mechanically flexible and chemically stable, without altering the tactile feel or visual appearance of the base material.

Technical properties:

Functional principle of the coating

The SiO​​ barrier coating offers versatile application possibilities for the cosmetics and chemicals industries, enabling the development of sustainable and safe packaging solutions for a wide range of products.

Cosmetic packaging

Cream tubes, shampoo bottles, folding cartons

Key benefits

Moisture- and oil-repellent protection

Chemical packaging

Trays, cups, folding cartons

Key benefits

Oil resistance, dimensional stability and food-contact compliance

Secondary packaging

Secondary packaging for cosmetic products

Key benefits

Protection against external influences and enhanced sustainability

The NP® SiOPack®​ approach provides the cosmetics and chemicals industries with a sustainable, food-contact compliant and process-compatible solution that combines functionality with regulatory compliance — ideal for the development of innovative, environmentally responsible packaging solutions.

SiOPack® is a water-based SiO₂ thin-layer technology that provides paper and cardboard with a functional barrier against moisture, oils and chemical substances.

The technology protects against moisture, oils and external influences while enabling recyclable packaging solutions without polymer-based coatings. 

Yes, the SiO₂ coating replaces conventional polymer-based barrier systems and enables sustainable, paper-based packaging. 

Typical applications include folding cartons for creams, lotions or oils as well as paper-based packaging for chemical products and sensitive formulations. 

Yes, the coating combines hydrophobic and oleophobic properties and protects the material from grease penetration or softening. 

Yes, the ultra-thin SiO₂ layer does not change the feel or look of the base material. 

Yes, packaging based on the technology is fully recyclable in the paper stream. 

Yes. SiOPack® is free from fluoropolymers, solvents and microplastics.

Yes, the technology is designed for industrial applications and is compatible with existing converting and packaging processes. 

The coating provides protection against chemical influences, improves structural stability and enables sustainable packaging solutions without plastic.