When it comes to packaging, sealing isn’t just a step in production — it’s the promise of protection. From snacks and frozen foods to pharmaceuticals and industrial goods, every product relies on one crucial property: a perfect seal. That’s why PET film sealing stands as one of the most trusted and high-performance solutions in the modern packaging industry.
For over 120 years, Pilcher Hamilton Corporation (PHC) has set the benchmark for quality and innovation in polyester converting. Founded in 1904 and based at 850 South Buncombe Road, Greer, South Carolina, PHC has grown into one of the largest U.S. suppliers and converters of PET films.
With 10,000,000 pounds of film inventory, precision coating and slitting capabilities, and 24–48-hour nationwide delivery, PHC serves converters, manufacturers, and packaging engineers who search “polyester near me” — providing not only materials but confidence in every roll.
Understanding PET Film Sealing
PET film sealing refers to the process of bonding polyester films to themselves or to other substrates using heat, pressure, or adhesives. It’s the essential step that transforms film into functional packaging — ensuring that every bag, pouch, or wrap remains airtight, tamper-resistant, and durable.
At Pilcher Hamilton Corporation, we specialize in heat sealable PET films engineered for strong, consistent seals that preserve freshness and product quality. These films are designed to perform on both vertical (VFFS) and horizontal (HFFS) packaging machines, making them ideal for high-speed production environments.
Key characteristics of PHC’s sealable PET films include:
- High seal strength and integrity under variable temperature ranges
- Excellent clarity and optical gloss
- Consistent thermal bonding without distortion
- Moisture, oxygen, and aroma resistance
- Compatibility with coatings, laminates, and inks
Explore our advanced sealing film portfolio:
👉 Heat Sealable Polyester Films
👉 Barrier Films
👉 Coating Services
👉 Corona Treated Films
The Science of a Perfect Seal
The performance of a seal depends on three critical factors — temperature, pressure, and dwell time. PET films are uniquely suited to meet these demands due to their balanced mechanical and thermal properties.
PHC’s heat sealable PET films are produced with specialized coatings or coextruded layers that soften under heat, forming a tight bond as the film cools. The result is a strong, hermetic seal that prevents leaks, maintains product integrity, and enhances shelf life.
In addition to heat sealing, PHC films support:
- Cold sealing for sensitive or temperature-sensitive goods
- Adhesive and ultrasonic bonding for specialty laminations
- Seal-through contamination properties for challenging packaging conditions
Each roll of PHC film is tested for seal strength, seal initiation temperature, and peel integrity, ensuring consistent results from line setup to shipment.
Why PET Film Excels in Sealing Applications
PET (polyethylene terephthalate) offers a unique combination of clarity, strength, and stability — making it the preferred base for sealing applications across industries.
- Dimensional Stability – PET maintains its shape and strength during heating and cooling cycles.
- Versatile Compatibility – Bonds effectively with coatings, inks, adhesives, and other substrates.
- Barrier Efficiency – Naturally resists moisture and oxygen ingress.
- Mechanical Strength – Provides tear and puncture resistance for durable packages.
- Sustainability – PET is fully recyclable and can include Post-Consumer Recycled (PCR) content.
PHC’s expertise ensures that every PET film we produce delivers reliable sealing performance without sacrificing sustainability or speed.
Applications of PET Film Sealing
PHC’s sealable polyester films are used across numerous industries where safety, preservation, and presentation are key:
- Food Packaging:
Snack pouches, lidding films, coffee bags, and frozen meal wraps. - Pharmaceuticals:
Sachets, medical pouches, and blister packaging with moisture barriers. - Personal Care & Cosmetics:
Sachets and sample packs for liquids, gels, and creams. - Industrial Uses:
Sealable laminates for electronics, adhesives, and specialty coatings. - Beverage Applications:
Heat-sealed labels and overwraps for single-serve products.
These applications all share one common factor — the need for dependable, high-speed sealing that performs consistently over time.
PHC’s Converting Expertise in Sealing Films
At Pilcher Hamilton Corporation, every roll of film represents decades of innovation and precision. Our Greer, South Carolina facility houses a full range of converting technologies, allowing us to customize sealing performance for each client.
Our capabilities include:
- Slitting — tight tolerance and clean roll edges
- Sheeting — for custom-cut film applications
- Winding & Rewinding — ensuring roll uniformity and structure
- Toll Converting — for client-supplied materials
- Coating — for heat seal or barrier functionality
- Corona Treating — to optimize surface energy and adhesion
Our team ensures that every PET film not only seals perfectly but also supports efficient line speeds, minimal waste, and consistent packaging appearance.
Sustainability and Recyclable PET Sealing Films
As sustainability reshapes the packaging landscape, PHC continues to lead with eco-friendly PET films. Our heat sealable polyester films can be manufactured using Post-Consumer Recycled (PCR) resins while maintaining the same clarity, seal integrity, and performance as virgin PET.
Through our Sustainability First Program, we partner with brands to create recyclable, mono-material film structures that reduce waste and environmental impact.
At PHC, sustainability isn’t an afterthought — it’s integrated into every stage of production, from raw material sourcing to final roll delivery.
Partner With Pilcher Hamilton Corporation
For converters and manufacturers seeking reliability, versatility, and speed, Pilcher Hamilton Corporation delivers the full package. Our expertise in PET film sealing, coating, and lamination ensures that your products stay secure, fresh, and visually compelling.
Backed by more than a century of service, PHC remains the trusted choice for polyester converting in the U.S., serving industries that demand nothing less than precision and performance.Visit our All Products and Contact Us pages to learn how PHC’s sealable PET films can strengthen your packaging line — and why “polyester near me” always leads to Pilcher Hamilton.