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# We sell plastic raw material # Raw Material LLDPE

performances

● Heat sealability: LLDPE film has good heat sealability, as long as it reaches the lowest sealing temperature, it has good heat sealing strength and strong anti-pollution ability of sealing.

● Melt Properties: Melt properties are determined by factors such as relative mass, relative mass distribution, and long branched chains. The same melt flow rate Hu LLDPE and LDPE and the relationship between the shear rate: LLDPE Hu behavior is similar to the relative mass distribution of the narrow HDPE, than the melt viscosity of LDPE is high, so extrusion molding extrusion load increases, heat generation also increases.

The melt tension of Raw Material LLDPE is lower than that of LDPE and the relaxation time of melt stress is shorter. It can be observed that the necking of the melt film extruded from the T-head is large, and the vertical elongation of the parison is large during hollow molding. Due to the short relaxation time of the melt stress, the residual stress in the injection molded product is small, so the shrinkage is small and the warpage is also small.

● Thermal Properties: The melting point of polyethylene is proportional to the completeness of crystallization and the size of the grains, so the melting point of LLDPE is 10-15 degrees Celsius higher than that of LDPE, and even for the same LLDPE, the higher the carbon number of the copolymer monomer, the higher the melting point. The same rule applies to the Vicat softening point. The film's heat sealing performance and completely melted heat sealing temperature corresponds to the LLDPE heat sealing temperature is 10-15 degrees Celsius higher than LDPE, and LLDPE than the LDPE melting point range is narrower, so the film's heat sealing performance is good.

LLDPE cold resistance, on the catalytic temperature in relation to the melt flow rate, LLDPE embrittlement temperature than LDPE, HDPE are lower, which indicates that can be resistant to lower temperatures.

● Physical and mechanical properties: Raw Material LLDPE tensile properties and LDPE sex than the number of tensile, tensile strength, especially tensile strength at break and elongation at break, generally from the stress-strain curve area of the energy required to break, as an indicator of the rigidity of the resin. Obviously, the rigidity of LLDPE is good, which can be considered to be due to the LLDPE in the chain of more reasons.

Relationship between rigidity and density: The lower the density, the less rigid (i.e., softer). On the same density, LLDPE impact strength is greater than C4 more C6, C8 copolymer monomer polymer impact strength.

LLDPE film physical and mechanical properties are significantly better than LDPE, its softness, toughness, cold resistance, puncture resistance are better than LDPE.

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