PETG/COC/PETG composite film for medical device packaging

Material Structure and Core Properties

Three-layer composite structure (PETG/COC/PETG)

The multilayer composite film is made by combining PETG (glycol-modified polyethylene terephthalate, outer layer) with COC (cyclic olefin copolymer, middle layer), leveraging the synergistic advantages of both materials to meet high-performance requirements.

- The PETG layer provides mechanical strength, processability, and basic transparency

- The COC layer enhances barrier properties, thermal stability, and optical purity

- Composite structure ensures uniform interlayer bonding and stable, consistent performance

Optical transparency (outstanding clarity)

Excellent light transmittance allows clear visibility of the contents.

- Light transmittance exceeding 90%, facilitating precise visual inspection of products inside the packaging

- Extremely low light scattering, suitable for applications requiring optical precision (such as optical products and medical devices)

- Clear and haze-free, making it easy to inspect the quality of the contents

Mechanical strength (durable, good toughness)

High tensile strength and impact resistance, protecting sensitive products from external damage.

- Withstands impact/pressure during handling, transportation, and storage without tearing or puncturing

- Ensures the structural integrity of packaging for fragile items (such as medical devices and optical components)

- Reduces the risk of product damage during logistics

Thermal stability (heat resistance)

Withstands high temperatures, suitable for thermal processing and sterilization.

- Reliable performance in thermal processing (e.g., heat sealing to form airtight packaging)

- Withstands sterilization processes (where applicable) without deforming, melting, or degrading barrier/mechanical properties

- Stable performance under temperature fluctuations, without degradation

Barrier properties (effective protection)

Excellent barrier against gases such as oxygen and water vapor permeation, protecting contents from external contamination.

- Prevents moisture-induced deterioration (such as drug instability and food spoilage) and gas-induced quality degradation, extending shelf life

- Blocks external contaminants (such as dust and microorganisms in medical packaging), keeping products intact

- Ensures long-term preservation of product quality and function

Main Application Areas

Medical device packaging

Provides a high level of protection for medical devices during storage and transportation, preventing contamination.

- Maintain the sterile state and integrity of medical devices (e.g., surgical instruments, diagnostic components)

- Prevent microbial intrusion and resist environmental damage

- Transparent design for easy visual inspection of device status

Pharmaceutical Packaging

Block external factors affecting quality to keep pharmaceuticals intact and stable.

- Protects medicines from moisture, oxygen, and light to preserve efficacy

- Complies with strict pharmaceutical packaging standards, safe and reliable

- Ensures drug shelf life meets regulatory requirements

High-end food packaging

Preserves food freshness, flavor, and quality while offering excellent tear resistance and airtightness.

- Forms an airtight barrier that blocks oxygen and prevents food spoilage

- Outstanding tear resistance for reliable handling (e.g., premium snacks, ready-to-eat meals)

- Maintains food texture and flavor even during long-term storage

Optical products

Suitable for packaging or protecting high-end optical components that require low light scattering and high transparency.

- Extremely low light scattering that does not interfere with optical performance

- Transparent design for easy visual inspection of optical products (e.g., lenses, sensors)

- Protects precision optical components from physical damage and dust