Low Density Polyethylene (LDPE)
- CAS NO.:9002-88-4
- HS Code: 39012000
- MF: (C2H4)n
- Brands: Sabic, Marlex, Qapco, ExxonMobil, Borouge, DOW, LyondellBasell, etc.
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What Is Low Density Polyethylene
Low density polyethylene (LDPE), also known as high-pressure polyethylene, is the lightest variety of polyethylene resin, and its appearance is milky white, odorless, non-toxic, and dull waxy particles. LDPE resin has good flexibility, extensibility, electrical insulation, transparency, easy processing and certain air permeability. It has good chemical stability, alkali resistance and general organic solvent resistance. However, its melting temperature is low and it is easy to process, but its heat sealing performance is poor.
As a commonly used plastic raw material, LDPE resin is suitable for various molding processes of thermoplastic molding processing, and has good molding processability. Therefore, LDPE low density polyethylene resin is mainly used to make film products, injection molded products, medical equipment, pharmaceutical and food packaging materials, blow molding and hollow molding products, etc.
Different Brands of LDPE Resin
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Sabic LDPE
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Qapco LDPE
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Marlex LDPE
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DOW LDPE
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LyondellBasell LDPE
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ExxonMobil LDPE
Sabic LDPE | Grades |
General grade | 2102NOW, 2102N3W, 2402H3W, HP2022JN, HP2023JN, HP2023NN, |
Film grade | 2100NO, 2100NOW, 2101NOW, 2200HO, 2200H2, 2201HO, 2201H1, 2201H3W, 2404H4, 2404NO, 2500NO, 2501NO, 2501NOW, 2600HO,HP4024WN,HP0322N, HP0322NN, HP0323NN, HP0722NN, HP0723JN, HP0823NN, HP20023, HP2025NN, HP2027LN, HP2027NN, HP4023WN, HP4024N, HP4027JN, HP4027NN, HP7022, HP7023 |
Tubular grade | 2005EC, 2008NO, 2015NO, 2308NO, 2402H3W , 2404NO, |
Masterbatch grade | 1965NO |
Ultra Melt Strength (UMS) grade | 1905UO, 2202UO |
Foam applications | 2004CX3, 2102XO, 2102X3, 2402CXO, 2600HO, 2602X1, HP0323NN, HP0823NN, HP2024JDF, HP2024NDF, |
Food grade | 1922NO, 2201HOW, 2201H1W, 2602HOW, 2801HOW, |
blown film extrusion grade | 2202H3W, 2402HO, HP0321NN, HP0723JN, HP0724NN, HP4025ZN, |
Lotrene LDPE | MG 70,LA 0710,FB 3003,FB 5026,FD 0270,FD 0274,FD 0374,FD 0474,FE 3000,FE 8000,FE 8004 |
Marlex LDPE | Grades |
Blow molding | 4538A, 5104 |
Injection Molding | 1007, 1009,1122B,1412, KN226 |
Blown Film | 1122, 5335, 5561, 5563, 5613, 5619, 5626, 5754, 5755 |
Cast film | 4571, 5428, 5429, 5430, 5440 |
Extrusion Coating and Lamination | 1013, 1017, 1018, 1019, 4517 |
Item | Grades |
DOW LDPE | LDPE 150E, LDPE 310E, LDPE 312E, LDPE 352E, LDPE 450E, LDPE 582E, LDPE 780E, LDPE 722, DOW EC 7000, EC7220, XZ89166 |
Item | Grades |
Lyondellbasell LDPE | LD1800S, LD2420D, LD2420F, LD2420K, LD3020F, LD3020K |
Item | Grades |
ExxonMobil LDPE | LD 051.LQ, LD 071 Series, LD 080 Series, LD 100.BW, LD 102.LC, LD 103 Series, LD 105 Series, LD 117 Series, LD 123.LN, LD 129.DS, LD 136.MN, LD 143.DJ, LD 165.BW1, LD 200.48, LD 201.48, LD 202.48, LD 241.48, LD 302 Series, LD 306 Series, LD 312 Series, LD 313.NF, LD 317.PM, LD 319.PM, LD 331.NM, LD 419.MV, LD 506.07, LD 516.LN, LD 521.LN Blown, LD 521.LN Molding, LD 617.LN, LD 637.LI, LGA 105 |
- Applications of LDPE Resin
- Performance Characteristics
- Why Choose Fengbai
- Production Process
- Packaging field. The LDPE resin has become the preferred material in the packaging industry due to its good softness, elongation and chemical corrosion resistance. It is widely used in food packaging, such as plastic bags, cling film, candy bags, etc., to ensure the safety and hygiene of food. In addition, LDPE resin is also used to manufacture garbage bags, daily necessities packaging and other packaging products.
- Agriculture. In the agricultural field, films made of LDPE resin (such as greenhouse films and ground films) are widely used. These films have good light transmittance, heat preservation and moisture resistance, and can effectively improve the yield and quality of crops. At the same time, LDPE resin films can also be used for soil moisture retention, weed control and prevention of pests and diseases.
- Cables and insulation materials. This resin has excellent electrical insulation properties and good processing properties, so it is widely used in the insulation layer and sheath of cables. In addition, LDPE granules can also be used to manufacture insulation materials for various electrical equipment to ensure the normal operation of electrical equipment.
- Daily consumer goods. LDPE resin is also widely used in the manufacture of daily consumer goods. For example, the manufacture of various plastic bottles, barrels, containers, lids, etc., as well as toys, stationery and other products cannot be separated from LDPE resin. These products are popular among consumers because of their lightness, durability, and easy processing.
- Automotive industry. In the automotive industry, LDPE resin is used to manufacture various interior parts, such as seats, door panels, dashboards, etc. These parts need to have good flexibility, wear resistance, and corrosion resistance, and LDPE resin just meets these requirements. In addition, LDPE resin can also be used to manufacture parts such as automotive wiring harness jackets.
- Construction industry. LDPE resin is used to manufacture pipes, waterproof materials, thermal insulation materials, etc. For example, LDPE pipes are widely used in water supply and drainage systems because of their corrosion resistance, wear resistance, and easy installation. In addition, LDPE resin can also be made into waterproof materials for waterproof projects such as roofs and basements.
- Medical field. LDPE low density polyethylene resin is also increasingly used in the medical field. It is used to manufacture medical devices, infusion tubes, infusion bags and other medical supplies. Because LDPE resin has the characteristics of non-toxicity, odorlessness, and corrosion resistance, it can meet the strict requirements of medical devices.
Softness and extensibility
LDPE resin exhibits excellent softness and extensibility due to its lower molecular weight and wider molecular weight distribution. This makes it very suitable for manufacturing products that require good flexibility and extensibility, such as packaging films, cable sheaths, and geomembranes.
Chemical corrosion resistance
The LDPE resin has good chemical corrosion resistance to most acid, alkali, and salt aqueous solutions. This makes it perform well in environments that require long-term contact with chemicals, such as linings, pipelines, and storage tanks of chemical equipment.
Electrical insulation
This resin is an excellent electrical insulation material with a low dielectric constant and dielectric loss. It can be used in the insulation layer of wires and cables to ensure stable transmission of current.
Transparency
The resin has good transparency, especially in film products, which can clearly show the appearance of the packaged items. This makes it widely used in food packaging, medical packaging and other fields.
Processing performance
LDPE resin has excellent processing performance and can be processed into products of various shapes and sizes through various molding methods (such as extrusion, injection molding, blow molding, etc.). At the same time, it has good fluidity and is easy to fill the mold, improving production efficiency.
Low temperature toughness
Compared with other polyethylene resins, LDPE Low density polyethylene resin can still maintain good toughness at low temperatures. This allows it to maintain good performance in cold environments, such as cable sheaths and pipes in low temperature environments.
Water vapor and oxygen permeability
LDPE resin has low permeability to water vapor and oxygen, which makes it widely used in packaging fields that require moisture-proof and fresh-keeping (such as food, medicine, etc.).
Stress cracking resistance
LDPE Low density polyethylene is not easy to crack when subjected to external forces and has good stress cracking resistance. This makes it perform well in products that need to withstand certain pressure or stress, such as geomembranes, pipes, etc.
Non-toxic and odorless
LDPE resin is a non-toxic and odorless material that meets the requirements of food safety and medical hygiene. Therefore, it is widely used in food packaging, medical devices and other fields.
Environmental protection
LDPE resin is a recyclable material that can be recycled and reused after reprocessing to reduce pollution to the environment. At the same time, its production process is relatively environmentally friendly and meets the requirements of sustainable development.
- With more than 15+ years of export experience in plastic chemicals industry.
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- Free samples for testing and different packages to meet customers’ requirements.
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The production process of LDPE resin is mainly divided into high pressure method and low pressure method. The high pressure method refers to the polymerization of ethylene monomer into LDPE under high pressure. The low-pressure method refers to the polymerization of ethylene monomer into linear low density polyethylene (LLDPE) under low pressure, and then it becomes LDPE through post-processing.
In the process of producing low density polyethylene LDPE by high pressure method, a high pressure reactor is required. First, ethylene monomer and catalyst are fed into the reactor, and then polymerization is carried out under high pressure. After the reaction is over, the reactant is cooled and decompressed to obtain LDPE granules. These granules can be processed into various plastic products.
In the process of producing LDPE by low pressure method, ethylene monomer and catalyst need to be added into the reactor first, and then the polymerization reaction is carried out under low pressure. After the reaction is finished, LLDPE particles are obtained. These pellets need to undergo post-processing, including steps such as heating, compression and stretching, to make them into LDPE granules. And these granules can be processed into various plastic products.
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