Description
SK PRIMACOR 3460 is an EAA resin, also known as Ethylene Acrylic Acid Copolymer. It is suitable for extrusion coating and extrusion lamination applications. This grade is specifically designed for use as a sealant and adhesive layer in flexible packaging laminates and thin paper coating.
PRIMACOR 3460 provides excellent heat sealability, hot tack and adhesion to metallic, paper and polyethylene substrates. It also offers good stress crack resistance and low sensitivity to moisture. With 9.7% comonomer content and a melt index of 20 g/10min, PRIMACOR 3460 is suitable for high line speeds and low processing temperature applications where stable coating performance and reliable bonding are required.
Key Features
– Excellent heat sealability and hot tack
– Excellent adhesion to metallic, paper and polyethylene substrates
– Good stress crack resistance
– Low sensitivity to moisture
– Designed for high line speeds
– Suitable for low processing temperature extrusion coating
– Suitable for extrusion coating and extrusion lamination
– Can be used as a sealant or adhesive layer
– Suitable for flexible packaging laminates
– Suitable for thin paper coating
– No antiblock and no slip additives
Applications
– Extrusion coating
– Extrusion lamination
– Low temperature extrusion coating
– High-speed extrusion coating
– Flexible packaging
– Flexible packaging laminates
– Thin paper coating
– Metallic substrate lamination
– Paper and paperboard coating
– Aluminum foil lamination
– Polyethylene bonding layer
– Sealant layer for multilayer packaging structures
– Adhesive layer for composite packaging
– Food packaging composite structures
– 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) | 20 g/10min | 20 g/10min | ASTM D1238 / ISO 1133 |
| Resin Properties | Comonomer Content | 9.7% | 9.7% | SK Method |
| Resin Properties | Vicat Softening Temperature | 162°F | 72.2°C | ASTM D1525 / ISO 306 |
| Resin Properties | Melting Temperature (DSC) | 203°F | 95.0°C | SK Method |
| Film Properties | Seal Initiation Temperature | 185°F | 85.0°C | SK Method |
| Film Properties | Water Vapor Transmission Rate, 100°F (38°C), 90% RH | 1.1 g·mil/100in²/atm/24hr | 0.44 g·mm/m²/atm/24hr | DIN 53122/2 |
| Mechanical Properties | Tensile Strength at Yield, Compression Molded | 1050 psi | 7.24 MPa | ASTM D638 / ISO 527-2 |
| Mechanical Properties | Tensile Strength at Break, Compression Molded | 2350 psi | 16.2 MPa | ASTM D638 / ISO 527-2 |
| Mechanical Properties | Tensile Elongation at Break, Compression Molded | 580% | 580% | ASTM D638 / ISO 527-2 |
| Extrusion | Melt Temperature | 428–500°F | 220–260°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 | 2.8 in | 71.1 mm | SK Method |
Typical Extrusion Conditions
PRIMACOR 3460 can be processed under typical extrusion coating and extrusion lamination 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 425°F or 218°C, output of 250 lb/hr and air gap of 6 inches.
The recommended melt temperature range is 428–500°F, equivalent to 220–260°C. Compared with many standard extrusion coating EAA grades, PRIMACOR 3460 is designed for lower processing temperature and high line speed applications. 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 3460 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 3460 is an EAA resin with 9.7% comonomer content and a melt index of 20 g/10min. It is designed for extrusion coating and extrusion lamination applications where high line speed, low processing temperature, heat sealability, hot tack and adhesion performance are important.
This grade is especially suitable for flexible packaging, thin paper coating and metallic substrate lamination. Compared with standard polyethylene, PRIMACOR 3460 can improve adhesion to metallic, paper and polyethylene substrates while providing reliable sealing performance and good stress crack resistance in multilayer packaging structures.
FAQ
1. What is SK PRIMACOR 3460?
SK PRIMACOR 3460 is an EAA resin, also known as Ethylene Acrylic Acid Copolymer. It is suitable for extrusion coating and extrusion lamination applications.
2. What is the acrylic acid content of PRIMACOR 3460?
The comonomer content of PRIMACOR 3460 is 9.7%, based on SK test method.
3. What is the melt index of PRIMACOR 3460?
The melt index is 20 g/10min under 190°C / 2.16 kg test conditions.
4. What is the density of PRIMACOR 3460?
The density of PRIMACOR 3460 is 0.938 g/cm³.
5. What is the melting temperature of PRIMACOR 3460?
The melting temperature is 95.0°C by DSC method.
6. What is the Vicat softening temperature of PRIMACOR 3460?
The Vicat softening temperature is 72.2°C.
7. What applications is PRIMACOR 3460 suitable for?
It is suitable for extrusion coating, extrusion lamination, flexible packaging, thin paper coating, metallic substrate lamination, paper coating and multilayer packaging structures.
8. What substrates can PRIMACOR 3460 bond to?
PRIMACOR 3460 provides excellent adhesion to metallic, paper and polyethylene substrates.
9. What are the key advantages of PRIMACOR 3460?
Its key advantages include excellent heat sealability, hot tack, adhesion to metallic and paper substrates, good stress crack resistance, low moisture sensitivity, high line speed capability and lower processing temperature.
10. What is the difference between PRIMACOR 3460 and PRIMACOR 3440?
Both grades are EAA resins with 9.7% comonomer content. PRIMACOR 3460 has a higher melt index of 20 g/10min and is designed for high line speeds and low processing temperature. PRIMACOR 3440 has a melt index of 10 g/10min and is designed specifically for high line speed extrusion coating with a higher typical processing temperature.
11. Does PRIMACOR 3460 contain slip or antiblock additives?
No. According to the technical data, PRIMACOR 3460 does not contain slip or antiblock additives.
12. Can PRIMACOR 3460 be used for thin paper coating?
Yes. PRIMACOR 3460 is suitable for thin paper coating and flexible packaging laminates.
13. Can Shenzhen Ruiqing International Trade Co., Ltd. supply PRIMACOR 3460?
Shenzhen Ruiqing International Trade Co., Ltd. can provide PRIMACOR 3460 and other SK EAA series grades, including quotation, lead time, TDS, SDS, COA and bulk supply support.
