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SURLYN™ - Ionomers

Versatile Packaging Solutions

Produced by DOW, SURLYN™ Ionomers are renowned for their versatility in both flexible and rigid packaging applications. These ionomers, derived from the partial neutralisation of an acid copolymer with a metal salt, offer a unique combination of properties that make them ideal for a wide range of packaging needs.

Flexible Packaging for Today and Tomorrow

SURLYN™ Ionomers have long been a preferred choice for flexible packaging formats such as sachets, pillow pouches, flow-wrap packages, composite cans, and stand-up pouches. They are used in various food and non-food packaging, as well as pharmaceutical and medical packaging applications.

Key benefits include:

• Low sealing temperature

• Very broad sealing temperature range

• Excellent hot tack strength

• High clarity and gloss for see-through films

• Outstanding oil/grease resistance

• Superb thermoformability

• Excellent seal through contamination

• Strong aluminium adhesion

• High puncture resistance

• Scratch resistance

Recent trends towards vacuum skin packaging (VSP) have opened new possibilities for SURLYN™ Ionomers. They deliver uniform deformation during thermoforming, with a high shrink rate and low shrink force that ensures a tight draw around the package while maintaining the original shape of delicate products. The inherent puncture resistance completes the package.

High-Gloss Appeal for Rigid Packaging Innovations

SURLYN™ Ionomers also excel in rigid packaging applications, offering outstanding stiffness, clarity, and gloss. These ionomers provide excellent oil, grease, and chemical resistance, making them suitable for various processing methods such as blown and cast films, extrusion coatings, and lamination.

Popular Applications of SURLYN™ Ionomers:

• Flow-wrap packaging

• Cereal liners

• Medical forming web

• Meat packaging

• Vacuum skin packaging (VSP)

• Barrier shrink bags (BSB)

• Retail skin and stretch packaging

Notable Grades of SURLYN™ Ionomers:

• SURLYN™ 1601 and SURLYN™ 1652: Ideal as a heat seal layer for meat adhesion/affinity, good seal through contamination, improved forming properties, and enhanced shrink-back for applications such as HFFS, VSP, BSB, processed meat and cheese packaging, and cereal liners.

• SURLYN™ 1652 and/or SURLYN™ 1605: Serve as a sealant layer with direct bond onto aluminium foil, oil, grease, and alcohol barrier, as well as good scratch and abrasion resistance in pouches, stick packs, and composite cans for soups, snacks, instant coffee, potato chips, and pharmaceutical packaging.

• SURLYN™ 1705 and/or SURLYN™ 1857: Provide adhesion or seal onto glass and ceramics in yoghurt, dessert, and spread packaging.

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