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EXCEEDLLDPE

LL6201 Series (Linear Low Density Polyethylene for injection molding applications)

Description

Recommended processing conditions and resin handling

LL 6201 XR is a high flow LLDPE grade,which offers a unique combination of excellent processability and outstanding product properties.
Parts manufactured from LL 6201 XR have good gloss and offer advantages in, toughness, environmental stress crack resistance, stiffness and heat distortion resistance over comparable low density polyethylene items. These properties have enhanced its use in making lids, thin wall 
articles and general purpose houseware.

The superior properties of LL 6101 XR make itan ideal grade to substitute lower melt index, low density resins and still achieve a significant improvement in properties such as ESCR, gloss and stiffness. Another outstanding feature is that articles molded from LL 6101 XR exhibit very low warpage.

The intrinsically high stiffness of LL 6101 XR offers the advantage of material savings by downgauging wall thickness whilst retaining top load strength. The grade is also available in powder form (LL 6201 RQ) which is used in compounding applications.

LL 6201 XR can readily be processed on commercially available injection molding  machines. The optimum conditions depend on many parameters e.g. application, mould design, etc. but as a guideline the normal processing temperature should lie in the range of 170-190 °C.

The grade shows an improved cycle time: the higher crystallization point of linear LDPE and lits greater intrinsic stiffness versus LDPEallow mold ejection at higher temperatures. 

The LL6201 RQ powder version can be conveyed and fed through systems designed to handle pelletized grades. However some minor modification may be necessar.

Both resins are stabilized for protection against oxidation and yellowing during processing under normal injection molding conditions.

Typical values

General properties Test Method(based on) Unit Typical Value3
Melt Index ASTM D 1238 g/10 min 50
DensityASTM D 1928/4883g/cm 30.926
Melting Point ASTM D 3418 °C 121
Crystallization Point (DSC)ASTM D 3418°C106
Vicat Softening Point (DSC) ASTM D 1525 °C 89

Mechanical properties

       
Tensile Strength at Break ASTM D 638 MPa 8
Elongation at BreakASTM D 638%620
1 % Secant Modulus ASTM D 638 MPa 270
Shore Hardness - D (15 sec)ASTM D 2240  48
ESCR (F50, 10 % Igepal) ASTM D 1693 h <1