描述
PRIMACOR 3440 EAA Resin is an ethylene acrylic acid copolymer designed for extrusion coating and lamination applications. It is widely used as an adhesive and sealant layer in flexible packaging structures where strong bonding to polar and non-polar substrates is required.
SK PRIMACOR 3440 EAA Resin provides excellent adhesion to paper, paperboard, aluminum foil, metallized films and polyethylene. It also delivers strong hot tack, excellent heat sealability, high toughness and outstanding resistance to delamination and stress cracking.
According to technical datasheet information, this grade is designed for high line speed extrusion coating applications and stable processing performance in industrial packaging production.
Compared with conventional polyethylene materials, EAA resins provide significantly stronger polarity and interlayer bonding, making PRIMACOR 3440 suitable for demanding multilayer packaging and liquid packaging board structures.
Shenzhen Ruiqing International Trade Co., Ltd. supplies original SK PRIMACOR 3440 EAA Resin with stable supply, technical support and global delivery service.
PRIMACOR 3440 EAA Resin Key Features
- Excellent adhesion to paper, paperboard, aluminum foil and PE
- Outstanding hot tack performance
- Excellent heat sealability
- High toughness and flexibility
- Excellent stress crack resistance (ESCR)
- Strong resistance to delamination
- Moisture-insensitive performance
- Suitable for high-speed extrusion coating
Typical Applications
- Flexible packaging laminates
- Aluminum foil lamination
- Paperboard coating
- Liquid packaging structures
- Multilayer extrusion coating systems
- Adhesive tie-layer applications
- Industrial packaging laminates
Advantages
PRIMACOR 3440 is widely used in extrusion coating because it provides strong adhesion between dissimilar materials such as polyethylene and polar substrates like paper and aluminum foil.
Its acrylic acid functional groups enhance polarity and interfacial bonding, resulting in high peel strength and durable lamination performance. This makes it a key material in flexible packaging systems requiring high seal integrity and long-term durability.
Related Products
- SK PRIMACOR 3002 EAA Resin
- SK PRIMACOR 3150 EAA Resin
- SK PRIMACOR 3330 EAA Adhesive Resin
- SK PRIMACOR 3340 EAA Resin
- SK PRIMACOR 5980i EAA Resin
Typical Properties
| Property | Value |
|---|---|
| Material | Ethylene Acrylic Acid Copolymer |
| Grade | PRIMACOR 3440 |
| Density | 0.938 g/cm³ |
| Melt Index | 11 g/10 min |
| Acrylic Acid Content | 9.7% |
| Melting Temperature | 98°C |
| Vicat Softening Temperature | 81°C |
| Processing | Extrusion coating / Lamination |
| Additives | No slip / No antiblock |
Processing Recommendations
PRIMACOR 3440 EAA Resin is recommended for extrusion coating, co-extrusion coating and lamination applications. Processing temperature typically ranges from 260°C to 290°C depending on equipment and line speed.
For best performance, coating trials should be conducted to optimize adhesion strength, hot tack, coating uniformity and delamination resistance under actual production conditions.
For official product specifications, please refer to the SK PRIMACOR 3440 official product page .
For detailed technical data, please refer to the PRIMACOR 3440 Technical Data Sheet (TDS) .
PRIMACOR 3440 EAA Resin FAQ
What is SK PRIMACOR 3440 EAA Resin?
It is an ethylene acrylic acid copolymer designed for extrusion coating and lamination applications.
What are its main applications?
Flexible packaging laminates, aluminum foil lamination and liquid packaging board structures.
What substrates does it bond to?
It provides excellent adhesion to paper, aluminum foil, metals and polyethylene.
Why is it used in extrusion coating?
Because it offers strong adhesion, hot tack and high resistance to delamination in high-speed coating systems.
Can original SK PRIMACOR be supplied?
Yes. Shenzhen Ruiqing International Trade Co., Ltd. supplies original SK PRIMACOR EAA resins with technical support and global delivery.
