Description
SK PRIMACOR 3004 is an EAA resin, also known as Ethylene Acrylic Acid Copolymer. It is designed for use as an adhesive or sealant layer in extrusion coating, co-extrusion coating and extrusion lamination applications. This grade provides strong adhesion to paper, paperboard, metals and polyethylene substrates, making it suitable for flexible packaging laminates and liquid packaging board laminates.
PRIMACOR 3004 offers excellent draw-down and edge stability, high-performance sealant or tie layer properties, excellent hot-tack and sealability, excellent seal-through-contamination performance, product resistance, toughness and strength. With 9.7% comonomer content and a melt index of 8.5 g/10min, it is suitable for packaging structures that require reliable adhesion, sealing performance and stable extrusion coating processing.
Key Features
– Excellent draw-down and edge stability
– Strong adhesion to paper, paperboard, metals and polyethylene
– High-performance sealant or tie layer
– Excellent hot-tack and sealability
– Excellent seal-through-contamination performance
– Excellent product resistance
– Excellent toughness and strength
– Outstanding environmental stress crack resistance
– Suitable for extrusion coating and co-extrusion coating
– No antiblock and no slip additives
Applications
– Extrusion coating
– Co-extrusion coating
– Extrusion lamination
– Flexible packaging laminates
– Liquid packaging board laminates
– Paper and paperboard coating
– Aluminum foil lamination
– Polyethylene bonding layer
– Sealant layer for multilayer packaging structures
– Tie layer for composite packaging
– Food packaging composite structures
– Beverage packaging laminates
– Oil and grease resistant packaging
– Industrial flexible packaging
Properties
| Category | Property | Nominal Value (English) | Nominal Value (SI) | Test Method |
|---|---|---|---|---|
| Resin Properties | Density | 0.938 g/cm³ | 0.938 g/cm³ | ASTM D792 / ISO 1183 |
| Resin Properties | Melt Index (2.16 kg @190°C) | 8.5 g/10min | 8.5 g/10min | ASTM D1238 / ISO 1133 |
| Resin Properties | Comonomer Content | 9.7% | 9.7% | SK Method |
| Resin Properties | Vicat Softening Temperature | 178°F | 81.1°C | ASTM D1525 / ISO 306/A |
| Resin Properties | Melting Temperature (DSC) | 208°F | 98.0°C | SK Method |
| Mechanical Properties | Tensile Strength at Yield, Compression Molded | 1150 psi | 7.93 MPa | ASTM D638 / ISO 527-2 |
| Mechanical Properties | Tensile Strength at Break, Compression Molded | 2550 psi | 17.6 MPa | ASTM D638 / ISO 527-2 |
| Mechanical Properties | Tensile Elongation at Break, Compression Molded | 600% | 600% | ASTM D638 / ISO 527-2 |
| Extrusion | Melt Temperature | 500–554°F | 260–290°C | — |
| Extrusion | Minimum Coating Thickness | 0.40 mil | 10 μm | SK Method |
| Extrusion | Minimum Coating Weight | 6.0 lb/ream | 9.8 g/m² | SK Method |
| Extrusion | Neck-in, 550°F / 288°C, 1.0 mil / 25.4 μm | 2.0 in | 50.8 mm | SK Method |
Typical Extrusion Conditions
PRIMACOR 3004 can be processed under typical extrusion coating and co-extrusion coating conditions. Reference processing conditions include a screw size of 3.5 inches, 30:1 L/D, die gap of 20 mil, die width of 30 inches deckled to 24 inches, melt temperature around 550°F or 288°C, output of 250 lb/hr and air gap of 6 inches.
The recommended melt temperature range is 500–554°F, equivalent to 260–290°C. The minimum coating thickness is 0.40 mil, or 10 μm, and the minimum coating weight is 6.0 lb/ream, or 9.8 g/m². Final processing conditions should be adjusted according to equipment design, substrate type, coating weight, line speed and final packaging structure.
For better processing stability, equipment used for this resin should be constructed with corrosion-resistant materials. Dies and adapters are recommended to be stainless steel, duplex chrome plated or nickel plated.
Compliance and Additives
PRIMACOR 3004 complies with US FDA 21 CFR 177.1310(a)(1) and EU No 10/2011. Final suitability for food contact or packaging applications should be confirmed according to the customer’s final product structure, processing conditions and local regulatory requirements.
Additives information:
– Antiblock: No
– Slip: No
Product Summary
SK PRIMACOR 3004 is an EAA resin with 9.7% comonomer content and a melt index of 8.5 g/10min. It is designed for extrusion coating, co-extrusion coating and extrusion lamination applications where strong adhesion, hot-tack, sealability, draw-down performance and edge stability are important.
This grade is especially suitable for flexible packaging laminates and liquid packaging board laminates. Compared with standard polyethylene, PRIMACOR 3004 can improve adhesion to paper, paperboard, metals and polyethylene substrates while providing reliable sealing performance, product resistance and environmental stress crack resistance in multilayer packaging structures.
FAQ
1. What is SK PRIMACOR 3004?
SK PRIMACOR 3004 is an EAA resin, also known as Ethylene Acrylic Acid Copolymer. It is designed as an adhesive or sealant layer for extrusion coating, co-extrusion coating and extrusion lamination applications.
2. What is the acrylic acid content of PRIMACOR 3004?
The comonomer content of PRIMACOR 3004 is 9.7%, based on SK test method.
3. What is the melt index of PRIMACOR 3004?
The melt index is 8.5 g/10min under 190°C / 2.16 kg test conditions.
4. What is the density of PRIMACOR 3004?
The density of PRIMACOR 3004 is 0.938 g/cm³.
5. What is the melting temperature of PRIMACOR 3004?
The melting temperature is 98.0°C by DSC method.
6. What applications is PRIMACOR 3004 suitable for?
It is suitable for extrusion coating, co-extrusion coating, extrusion lamination, flexible packaging laminates, liquid packaging board laminates, paper coating, aluminum foil lamination and multilayer packaging structures.
7. What substrates can PRIMACOR 3004 bond to?
PRIMACOR 3004 provides adhesion to paper, paperboard, metals and polyethylene substrates.
8. What are the key advantages of PRIMACOR 3004?
Its key advantages include excellent draw-down, edge stability, hot-tack, sealability, seal-through-contamination performance, toughness, strength and product resistance.
9. What is the difference between PRIMACOR 3004 and PRIMACOR 3003?
Both grades are EAA resins for extrusion coating and lamination. PRIMACOR 3004 has a higher comonomer content of 9.7%, while PRIMACOR 3003 has 6.5%. PRIMACOR 3004 is more suitable when stronger sealability, tie-layer performance and higher adhesion performance are required.
10. Does PRIMACOR 3004 contain slip or antiblock additives?
No. According to the technical data, PRIMACOR 3004 does not contain slip or antiblock additives.
11. Can PRIMACOR 3004 be used for liquid packaging board laminates?
Yes. PRIMACOR 3004 is suitable for liquid packaging board laminates and flexible packaging laminates.
12. Can Shenzhen Ruiqing International Trade Co., Ltd. supply PRIMACOR 3004?
Shenzhen Ruiqing International Trade Co., Ltd. can provide PRIMACOR 3004 and other SK EAA series grades, including quotation, lead time, TDS, SDS, COA and bulk supply support.
