PET Barrier Films: Oxygen & Moisture Control 101 Guide USA
In the U.S. food, pharmaceutical, and industrial packaging markets, pet barrier films USA are the gold standard for protecting products from oxygen and moisture intrusion. By combining the durability of polyester with barrier coatings or metallization, PET films extend shelf life, preserve freshness, and maintain product integrity.
At Pilcher Hamilton Corporation, headquartered in Greer, SC, we supply and convert high-barrier PET films tailored to the needs of American converters, laminators, and brand owners. This 101 guide explains how PET barrier films work, why oxygen and moisture control matter, and where they are applied in the USA.
Why Oxygen & Moisture Control Matters
- Food Preservation: Oxygen and moisture are the top causes of spoilage in U.S. packaged foods.
- Pharmaceutical Stability: Sensitive medicines require controlled environments to maintain potency.
- Industrial Protection: Powders, chemicals, and adhesives degrade without barrier protection.
- Regulatory & Retail Compliance: Shelf life is tied directly to U.S. safety standards and consumer trust.
Types of PET Barrier Films
Metallized PET Films
Thin aluminum layer provides excellent oxygen and moisture barriers at reduced cost compared to foils.
PVDC Coated Polyester Films
Delivers superior gas and moisture barrier properties for food and pharma packaging.
Acrylic & Copolymer Coated PET Films
Enhances sealing and lamination adhesion in multilayer structures.
Opaque White Polyester Films
Blocks light in addition to oxygen and moisture, ideal for dairy and nutraceuticals.
Key Benefits for U.S. Buyers
- Extended Shelf Life: Keeps products fresh longer, reducing food waste.
- Sustainability: Lightweight PET films support recyclable and downgauged packaging trends in the USA.
- Cost Efficiency: High barrier without the weight and expense of foil laminates.
- Versatility: Works across food, pharma, medical, and industrial markets.
Technical Specs to Consider
- OTR (Oxygen Transmission Rate): Measured in cc/m²/day, lower OTR equals stronger oxygen protection.
- WVTR (Water Vapor Transmission Rate): Measured in g/m²/day, lower WVTR equals stronger moisture protection.
- Film Thickness: Custom gauges available depending on application.
- FDA Compliance: Approved barrier films available for direct food-contact in U.S. markets.
Applications of PET Barrier Films in the USA
- Snacks, Coffee & Confectionery: Protects against moisture and oxygen for flavor retention.
- Frozen & Prepared Meals: Keeps products stable under varied temperature conditions.
- Medical & Pharma Packaging: Ensures sterility and product stability.
- Industrial Chemicals & Adhesives: Maintains performance and prevents premature curing.
Why Source PET Barrier Films from Pilcher Hamilton
For more than a century, Pilcher Hamilton has delivered high-performance PET films to the U.S. market. We provide:
- Custom barrier film grades (metallized, PVDC, acrylic, opaque)
- Nationwide distribution for consistent U.S. supply
- Technical support for OTR/WVTR requirements
- Converting expertise from our Greer, SC operations
👉 Extend shelf life and protect your products with PET barrier films. Contact Pilcher Hamilton today to source barrier films in the USA.