Liquid Packaging Board (LPB) is a specialized multi-layer paperboard designed for liquid food packaging such as milk, juice, yogurt, and plant-based beverages. It is widely used in aseptic carton systems where barrier protection, hygiene, and structural strength are essential. Unlike conventional paperboard, LPB is engineered to withstand moisture, oxygen, and light exposure while maintaining product safety and extending shelf life. It serves as the core material for modern beverage carton packaging.
LPB is typically made from 100% virgin wood pulp, ensuring high purity and food safety compliance.
The board is constructed in multiple layers:
Surface layer: Provides smooth printing performance
Core layer: Enhances stiffness and thickness
Back layer: Improves sealing and coating adhesion
After sheet formation, barrier coatings are applied depending on application needs:
PE coating: For short shelf-life beverages
PE + aluminum foil: For long shelf-life aseptic packaging
The final product is dried, calendered, and rolled for conversion into liquid packaging cartons.
1. Strong Barrier Performance
LPB effectively prevents moisture, oxygen, and light penetration, protecting product freshness and quality.
2. High Mechanical Strength
It offers excellent stiffness, burst resistance, and folding durability, making it suitable for high-speed filling machines.
3. Food-Grade Safety
Produced under strict standards such as FDA and FSC, ensuring safe direct food contact applications.
4. Excellent Printability
The smooth surface allows high-quality printing for branding and product information.
5. Sustainable Material Potential
LPB is based on renewable fiber and is increasingly optimized for recyclability in modern packaging systems.
Liquid Packaging Board is widely used in:
Milk cartons and dairy packaging
Juice and beverage cartons
Plant-based drinks (soy, oat, almond milk)
Aseptic food packaging systems
Ready-to-drink nutritional beverages
It is a key material in both short shelf-life refrigerated products and long shelf-life sterile packaging.
China Paper LPB is designed to meet global packaging industry requirements with stable performance and export-grade quality.
Key advantages include:
Consistent bulk production quality
High stiffness for carton forming stability
Excellent barrier protection performance
Available grammage range: 190–340 gsm
Food-grade compliance (FDA / FSC certified materials)
Suitable for high-speed filling and converting lines
China Paper supports customized specifications for different carton formats and beverage applications, helping converters and brands improve packaging efficiency and product performance.
1. What is Liquid Packaging Board used for?
It is used for milk, juice, and liquid food cartons requiring barrier protection and structural strength.
2. Is LPB safe for food packaging?
Yes. It is made from virgin fiber and food-grade coatings compliant with international safety standards.
3. What is the difference between LPB and coated paperboard?
LPB includes functional barrier layers, while coated paper mainly improves surface appearance.
Liquid Packaging Board is an essential material in the global aseptic packaging industry, combining barrier protection, mechanical strength, and food safety. It enables reliable packaging for milk, juice, and beverage products across global supply chains. With China Paper’s LPB solutions, customers gain stable quality, customizable specifications, and reliable supply for high-performance liquid packaging applications.
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