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Elmet Technologies

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Westlake EMAC® SP 1257 Ethylene-Methyl Acrylate Copolymer  (discontinued **)
Categories: Polymer; Film; Thermoplastic; Ethylene Methyl Acrylate; Ethylene-Methyl Acrylate Copolymer, Film Grade

Material Notes: 20% Methyl Acrylate Content. Characteristics: FDA Clearance for Packaging of Most Foods, Including Aseptic Packaging; Less Crystalline and Softer than Polyethylene; Excellent Heat Stability Allows Processing Temperature Range of 280-600°F; Non-corrosive at all Temperature Ranges; No FDA Thickness Limitations; Contains a High Level of Slip and Antiblock Additives

Applications:Film: Excellent Heat Seal Response at Low Temperatures, Making it a Good Candidate for the Heat Seal Layer in Various Coextrusion Constructions; Coatings & Laminations: Higher Neck-In but Similar Drawdown vs. Polyethylene, Excellent Heat Seal Response at Low Seal Temperatures, Processing Temperature Range - 580-600°F, Can be Drawn as Low as 4 lbs. per ream, Gas Barrier and Grease Resistance are Slightly Less than those of LDPE; Coextrusion: Excellent Coextrusion Tie Layer for LDPE, LLDPE, HDPE, PP, EVA, EEA, Ionomer, PET, PC, PVDC and rigid PVC; Injection Molding: Processing Temperature 360-600°F, Less Mold Shrinkage than LDPE, Produces Very Tough, Stress Crack Resistant Parts

Eastman Chemical Company sold its polyethylene business to Westlake Chemical Corporation in Dec. 2006. This grade no longer appears in the Westlake product line.

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Physical PropertiesOriginal ValueComments
Density 0.944 g/ccASTM D1505
ESCR 10% Igepal® >= 360 hour
@Temperature 50.0 °C
F50; ASTM D1693
Melt Flow 2.0 g/10 min
@Load 2.16 kg,
Temperature 190 °C
Cond. E; ASTM D1238
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 90ASTM D2240
Hardness, Shore D 31ASTM D2240
Tensile Strength, Ultimate 11.4 MPaASTM D638
Elongation at Break 750 %ASTM D638
 
Thermal PropertiesOriginal ValueComments
Melting Point 82.0 °Cby DSC
Vicat Softening Point 58.0 °CASTM D1525
Brittleness Temperature <= -76.0 °CASTM D746
 
Processing PropertiesOriginal ValueComments
Processing Temperature 154 °CBlown Film
 190 °CMolding
 315 °CExtrusion Coating

**
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