Multi-Layer Co-Extruded Barrier Film

This product is a high-performance plastic film manufactured using co-extrusion technology to combine multiple polymer layers into a single sheet. Each layer provides specific functional properties such as oxygen/moisture barrier, mechanical strength, or sealability. The engineered material is designed to extend product shelf life and protect contents from environmental factors. It is a critical component in flexible packaging for food, pharmaceuticals, and industrial products.

The film is produced by simultaneously extruding multiple polymer melts through a single die, fusing them into a layered structure. Common materials include polyethylene (PE), polypropylene (PP), ethylene vinyl alcohol (EVOH), polyamide (PA), and tie-layer adhesives. The combination of layers can be tailored to meet specific barrier and mechanical requirements.

Typical parameters for this film include total thickness ranging from 50 to 120 μm (ISO 4593), width from 500 to 2000 mm (ISO 4592), oxygen transmission rate from 0.5 to 5.0 cc/m²/day (ASTM D3985), water vapor transmission rate from 1.0 to 10.0 g/m²/day (ASTM E96), seal initiation temperature from 110 to 140°C (ASTM F1921), tensile strength (MD) from 30 to 60 MPa (ASTM D882), elongation at break (MD) from 200 to 500% (ASTM D882), haze from 1.0 to 5.0% (ASTM D1003), coefficient of friction from 0.2 to 0.4 (ASTM D1894), operating temperature range from -40 to 85°C (ASTM D746), density from 0.91 to 0.94 g/cm³ (ASTM D1505), and roll diameter from 300 to 600 mm. These values are reference ranges and must be confirmed for the specific model and application.

When selecting this film, consider the required barrier properties, mechanical strength, sealability, and optical clarity. Verify that the film meets the necessary standards for your application. The film is not certified or compliant by default; always check with the legal manufacturer or supplier for model-specific values and standards. Proper handling and storage are essential to maintain performance. If the film becomes brittle or soft outside the operating temperature range, it may fail. Regular quality checks are recommended to ensure consistent barrier properties.

Multiple polymer melts are extruded simultaneously through a single die, fusing into a layered film where each stratum performs a distinct protective or structural function. The co-extrusion process allows precise control of layer thickness and composition, enabling the film to achieve high barrier performance against oxygen and moisture while maintaining mechanical strength and sealability. The tie-layer adhesives ensure adhesion between incompatible polymers, creating a cohesive structure.