haht.product_family: ; , haht.material_numbers: , haht.trade_name: TR257, haht.conversion_process: ; ; , haht.product_name: Polyethylene, haht.content_type: TDS, cpchem.advancedSearch.section:
TDS - TR257
For more information and technical
assistance contact:
Chevron Phillips Chemical Company LP
P.O. Box 4910
The Woodlands, TX 77387-4910
800.231.1212
SUPERIOR FLEXIBLE PACKAGING RESINS
MarFlex® TR257
Low Density Linear Polyethylene

This LDLPE is tailored for applications that require:
  • Good processibility
  • Good melt strength
  • Good drawdown
  • Good strength
  • Satin finish
  • Good MD & TD shrinkage
    Typical blown film applications include:
  • Pallet shrink
  • Heavy duty bags
  • Consumer & institutional shrink film
  • General purpose packaging

    • Nominal Resin Properties English SI Method
      Density --- 0.923 g/cm3 ASTM D1505
      Melt Index, 190C/2.16Kg --- 0.2 g/10min ASTM D1238
      Process Aid None None ---
      Antiblock None None ---
      Slip None None ---

    Nominal Film Properties at 1 mil1 English SI Method
      Haze 33 % 33 % ASTM D1003
      Gloss, 60° 46 46 ASTM D2457
      COF 0.35 0.35 ASTM D1894
      Dart --- 46 g/mil ASTM D1709
      Elmendorf Tear MD/TD --- 12/945 g/mil ASTM D1922
      Tensile Strength at Break MD/TD 10500/4300 psi 72/30 MPa ASTM D882
      Tensile Strength Elongation at Break MD/TD 380/800 % 380/800 % ASTM D882
      1% Secant Modulus MD/TD 53000/73000 psi 365/500 MPa ASTM D882
    1. Seated bubble, 2.5 BUR, 80 mil die gap, 8" die, 250 lb/hr, 400F melt temp.

    Marlex® TR257
    Low Density Linear Polyethylene


    Nominal Film Properties at 1 mil1 English SI Method
      Haze 36 % 36 % ASTM D1003
      Gloss, 60° 40 40 ASTM D2457
      COF 0.35 0.35 ASTM D1894
      Dart --- 140   g/mil ASTM D1709
      Elmendorf Tear MD/TD --- 30/400 g/mil D1709
      Tensile Strength at Break MD/TD 8800/6600  psi 61/46   MPa ASTM D882
      Tensile Strength Elongation at Break MD/TD 460/650  % 460/650 % ASTM D882
      1% Secant Modulus MD/TD 53000/58000 psi 365/400 MPa ASTM D882
    1. High Stalk, 4:1 BUR, 40 mil die gap.  8" die, 250 lb/hr, 430F melt temp.
    MSDS #240370 Revision Date January, 2008
    Before using this product, the user is advised and cautioned to make its own determination and assessment of the safety and suitability of the product for the specific use in question and is further advised against relying on the information contained herein as it may relate to any specific use or application. It is the ultimate responsibility of the user to ensure that the product is suited and the information is applicable to the user's specific application. Chevron Phillips Chemical Company LP does not make, and expressly disclaims, all warranties, including warranties of merchantability or fitness for a particular purpose, regardless of whether oral or written, express or implied, or allegedly arising from any usage of any trade or from any course of dealing in connection with the use of the information contained herein or the product itself. The user expressly assumes all risk and liability, whether based in contract, tort or otherwise, in connection with the use of the information contained herein or the product itself. Further, information contained herein is given without reference to any intellectual property issues, as well as federal, state or local laws which may be encountered in the use thereof. Such questions should be investigated by the user.
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