PP/EVOH/PP co - extruded barrier sheet is a high - performance multi - layer composite packaging material, engineered by integrating polypropylene (PP) and ethylene vinyl alcohol copolymer (EVOH) through advanced cast extrusion technology. This structure combines the mechanical strength and processability of PP with the superior gas barrier properties of EVOH, making it an ideal choice for packaging applications that demand long - term freshness retention and contamination prevention.
Widely used in food, pharmaceutical, and chemical packaging fields, the sheet provides excellent protection against oxygen, moisture, and aroma loss, effectively extending the shelf life of packaged products while ensuring compliance with international food contact safety standards.
Superior Gas Barrier PerformanceThe middle EVOH layer acts as a robust barrier against oxygen, carbon dioxide, and other gases, which is critical for preserving the freshness of oxygen - sensitive products such as cooked food, meat, dairy products, and ready - to - eat meals. Compared with single - layer PP sheets, our PP/EVOH/PP sheet reduces oxygen transmission rate (OTR) by over 95%, significantly slowing down oxidation and spoilage.
Excellent Mechanical PropertiesThe outer and inner PP layers offer high tensile strength, impact resistance, and rigidity, ensuring the sheet can withstand harsh processing conditions (such as thermoforming, punching, and sealing) and rough logistics handling without deformation or damage. It also features good heat resistance, suitable for high - temperature sterilization processes (e.g., retort sterilization) required for some food and pharmaceutical products.
Food - Safe & Environmentally FriendlyCompliant with FDA, EU 10/2011, and GB 4806 food contact safety standards, the sheet is free of harmful substances like BPA. The PP layers are recyclable, aligning with global environmental protection trends and helping customers meet sustainable packaging requirements.
Versatile ProcessabilityThe sheet is compatible with various downstream processing technologies, including thermoforming into trays, containers, and lids; vacuum forming; and heat sealing. It can be customized with anti - fog, anti - static, or UV - resistant coatings according to specific customer needs, expanding its application scope.
