Marlex D139 mLLDPE pellets - Films Expert

1. Introduction of Marlex D139 mLLDPE pellets

2. Marlex D139 mLLDPE series differences

2.1 Marlex D139 - Classical Highly transparent packaging PE film

• High transparency, clarity and smooth feel. Among the D139 mlldpe series, the basic model D139 has the highest gloss, reaching 130, and the haze is only 4%, so it is very suitable for applications that require high product appearance.
• Low heat sealing temperature. Compared to the butene-based LLDPE commonly used in the past, Marlex D139 has a seal initiation temperature of only 102°C, requiring lower temperatures in heat-sealing equipment.
• Food contact grade. As a polyethylene material used for food packaging, Marlex D130 mLLDPE has obtained food contact material certifications in multiple countries, including but not limited to FDA 21 CFR 177.1520, EU No. 10/2011, GB 4806.7-2023, KS24100402, and others. The material offers excellent safety performance and is suitable for food packaging applications.
• High toughness and impact resistance, Marlex D139 mLLDPE features a uniform monomer distribution, giving the material superior impact strength, tear resistance, and low-temperature performance. With a Dart value of 540 g/mil under the ASTM D1709 test standard, it is particularly well-suited for heavy-duty packaging boxes used in frozen food applications.

2.3 Marlex D139FJ - Balanced mLLDPE

• Excellent craftsmanship and texture. Marlex D139FJ mLLDPE contains 1,000 ppm of slip agents and 2,500 ppm of antiblock agents, which not only facilitate high-speed film production and prevent film sticking during production and storage, but also effectively enhance the film’s smoothness. However, the use of these two additives results in a slight deterioration in the material’s appearance, with haze increasing to 7% and gloss decreasing to 110.
• Moderate mechanical properties. Although the mechanical properties of Marlex D139FJ are somewhat reduced due to the addition of slip and antiblock agents, it still meets the requirements of most applications. The tensile strength at break in the flow direction is 49 MPa, and 59 MPa in the cross-flow direction; the tensile elongation at break at flow direction is 560%.

2.4 Marlex D139FK - Extremely thin PE films

3. In conclusion

• If you have high requirements on product appearance and tensile properties, it is recommended to choose the basic type D139 mlldpe. This mlldpe resin pellet has a more transparent, clearer and smoother feel.
• For applications that require strict avoidance of additives and demand high-gloss film, we recommend using Marlex D139N.
• If you require balanced material properties while also seeking to improve the film’s lubricity for use in high-speed film blowing equipment, we recommend Marlex D139FJ.
• If the film blowing equipment operates at high speeds, the product is produced in rolls, and there are no strict requirements for appearance, we recommend using Marlex D139FK, as this material offers superior anti-blocking properties.