Introduction
PRIMACOR™ 3340 Copolymer is an ethylene acrylic acid copolymer which has been specifically designed by SK for use as an adhesive or sealant layer in extrusion/coextrusion coating and lamination.
PRIMACOR™ 3340 Copolymer exhibits:
· Excellent adhesion to paper, paperboard, metals and polyethylenes
· Excellent hot-tack and sealability
· Good oil and grease resistance
· Insensitivity to moisture
Parameters
| Nominal Value (English) | Nominal Value (SI) | Test Method | ||
Resin | Density | 0.932 g/cm3 | 0.932 g/cm3 | ASTM D792 ISO 1183 |
Melt Index (2.16 kg @190℃) | 9.0 g/10min | 9.0 g/10min | ASTM D1238 | |
| Comonomer Content | 6.5 % | 6.5 % | SK Method | |
| Vicat Softening Temperature | 183 ℉ | 83.9 ℃ | ASTM D1525 ISO 306 | |
| Melting Temperature (DSC) | 214 ℉ | 101 ℃ | SK Method | |
Film Properties | Seal Initiation Temperature 2 | 199 ℉ | 92.8 ℃ | SK Method |
| Water Vapor Transmission Rate 100 ℉ (38 ℃), 90% RH | 1.0 g·mil/100in2/atm/24hr | 0.40 g·mm/m2/atm/24hr | DIN 53122/2 | |
Mechanical | Tensile Strength at Yield | 1150 psi | 7.93 MPa | ASTM D638 |
Tensile Strength at Break | 2500 psi | 17.2 MPa | ASTM D638 ISO 527-2 | |
| Tensile Elongation at Break (Compression Molded) | 630 % | 630 % | ASTM D638 ISO 527-2 | |
| Extrusion | Melt Temperature | 500 - 554 ℉ | 260 -290 ℃ | |
| Minimum Coating Thickness | 0.50 mil | 13 μm | SK Method | |
| Minimum Coating Weight | 7.5 lb/ream | 12 g/m2 | SK Method | |
Neck-in3 | 2.8 in | 69.9 mm | SK Method | |
Extrusion Condition 4 | · Screw Size: 3.5 in. (89 mm); 30:1 L/D · Die Gap: 20 mil (0.508 mm) · Die: 30 in. (762 mm) die deckled to 24 in. (609.6 mm) · Melt Temperature: 550 ℉(288 ℃) · Output: 250 lb/hr (113.4 kg/hr) · Air Gap: 6 in. (152 mm) | |||
1 Comonomer content measured by a SK proprietary method that has equivalent accuracy as compared to ASTM D 4094.
2 25 g/m2 coatings at 290 ℃ set temperature.
3 550 ℉ (288 ℃), 1.0 mil (25.4 µm)
4 Equipment used to process this resin should be constructed of corrosion resistant materials. Dies and adapters are recommended to be stainless steels and/or duplex chrome or nickel plated.
Application
· Flexible packaging laminates
· Liquid packaging board laminates
Extrusion Notes
Equipment used to process this resin should be constructed of corrosion resistant materials. Dies and adapters are
recommended to be stainless and/or duplex chrome or nickel plated.
Notes
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.
Sales consultant
