AFFINITY™ plastomers and elastomers
AFFINITY™ polyolefin plastomers and elastomers provide high-performance sealant layers for flexible food packaging — low seal initiation temperature, high seal strength, and excellent optical clarity enabling faster line speeds.
Scouted and summarized by Halo AI
Overview
The sealant layer determines package integrity — it must seal reliably at high line speeds, maintain hermeticity through distribution, and open cleanly. AFFINITY plastomers are metallocene-catalyzed ethylene-octene copolymers with narrow molecular weight distribution, resulting in precise melting behavior and consistent sealing. Low SIT enables faster lines and lower energy. Dow collaborated with Nestle Purina to develop all-PE pet food packaging using AFFINITY + SURLYN resins.
Technical specifications
- Chemistry: metallocene-catalyzed ethylene-octene copolymers (plastomers and elastomers)
- Seal properties: low seal initiation temperature, high ultimate seal strength, consistent hot tack
- Optics: excellent clarity and gloss for see-through packaging
- Line speed: low SIT enables faster sealing and higher throughput
- Applications: food packaging pouches, lidding films, stand-up pouches, multilayer sealant layers
- Case study: Nestle Purina sustainable pet food packaging (100% PE using AFFINITY + SURLYN)
- Compatibility: designed for coextrusion in multilayer PE structures
Technology readiness level
TRL 9 — commercially established sealant resin family with decades of market presence.
About Dow
Dow is a global leader in materials science, providing innovative solutions across various industries including packaging, electronics, and infrastructure.
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