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PRIMACOR™ 4608 Copolymer is an ethylene acrylic acid copolymer suitable for extrusion coating and extrusion lamination applications. PRIMACOR™ 4608 Copolymer has been specifically designed for use as a sealant and adhesive layer for flexible packaging and liquid packaging laminates.

PRIMACOR™ 4608 Copolymer exhibits:

  • Excellent heat sealability and hot tack.
  • Excellent adhesion to metallic, paper and polyethylene substrates.
  • Excellent draw down.
  • Good oil and grease resistance.
  • Insensitive to moisture.


  • Flexible packaging laminates.
  • Liquid packaging board laminates.

Complies with:

  • US. FDA 21 CFR 177.1310 (1).
  • EU. No 10/2011.


  • Antiblock: No.
  • Slip: No.

(1) As measured at the time of production.


Extrusion Conditions:
- Melt Temperature: 288 ºC.
- Screw Size: 3.5 in. (89 mm); 30:1 L/D.
- Die Gap: 20 mil (0.508 mm).
- Die: 30 inch (762 mm) die deckled to 24 inches (609.6 mm).
- Output: 250 lb/hr (113.4 kg/hr).
- Air Gap: 6 in. (152 mm).

Equipment used to process this resin should be constructed of corrosion resistant materials. Recommended to be stainless steels and/or duplex chrome or nickel plated.
These are typical values and are not be construed as specifications. The physical properties are highly dependent on the manufacturing conditions. So customers should confirm performances by their own tests.

Storage, Handling & Safety

Handling and storage
1. Precautions for safe handling:
1.1. Additional hazards when processed: Dust may form flammable and explosive mixture with air. Provide adequate ventilation to minimize dust and/or vapor concentrations.
1.2. Precautions for safe handling: Ensure good ventilation of the work station. Do not get in eyes, on skin, or on clothing. Wear personal protective equipment.
1.3. Hygiene measures: Wash contaminated clothing before reuse. Do not eat, drink or smoke when using this product. Always wash hands after handling the product.

2. Conditions for safe storage, including any incompatibilities:
2.1. Technical measures: Comply with applicable regulations. Keep in a cool, well-ventilated place away from heat. Store locked up. Store in tightly closed, leak-proof containers.
2.2. Storage conditions: Store in a well-ventilated place. Keep cool.
2.3. Incompatible materials: Direct sunlight.
2.4. Storage temperature: 5 – 35 °C.
2.5. Packaging materials: Store always product in container of same material as original container.


PackagingCircular EconomyAutomotive & Consumer GoodsIndustrial & Construction

The information above is believed to be accurate and represents the best information currently available to us. Your attention is directed to the pertinent Material Safety Data Sheets for the products mentioned herein. All sales are subject to SK Corporation’s standard terms and conditions of sale, copies of which are available upon request and which are part of SK Functional Polymer invoices and/or order acknowledgments. Except as expressly provided in SK Corporation’s standard terms and conditions of sale, SK Corporation makes no warranty of merchantability or any other warranty, express or implied, with respect to such information, and SK Corporation assumes no liability from its use. Users should make their own investigations to determine the suitability of the information for their particular purposes. SK Functional Polymer is a subsidiary of SK Global Chemical.

Additional information

Acrylic acid percentage (AA%)


Melt index (g/10 min,190°C)


Melting point (°C)


Vicat (°C)



Ext. Coating

    Melt index (g/10 min,190°C)
    Melting point (°C)
    Vicat (°C)
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    PRIMACOR™ 4608

    Ext. Coating