Low Density Polyethylene LDPE

  • Product Name: Low Density Polyethylene Resin
  • Abbreviation: LDPE Resin
  • Appearance: Milky white granules
  • Density: 0.91 ~ 0.93 g/cm³
  • CAS No.: 9002-88-4
  • HS Code: 39011020
  • Chemical Formula: (C2H4)n
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LDPE resin, with the full name of low density polyethylene, is a synthetic resin obtained by free radical polymerization of ethylene under high pressure. Therefore, LDPE is also known as high pressure polyethylene. Because the molecular chain contains more long and short chain branches, LLDPE resin is less dense and soft, is the lightest variety of polyethylene resin. It is milky white, tasteless, odorless, non-toxic, matte waxy granules. Low density polyethylene ldpe has good chemical stability, good flexibility, extensibility, electrical insulation, transparency, easy processing and certain air permeability. It is resistant to alkali and common organic solvents.

What Is Low Density Polyethylene LDPE Used For

1. It is mainly used to make film products. Low density polyethylene ldpe resin can be used to produce agricultural films (such as ground cover films, greenhouse films), packaging films, blown films for liquid packaging, heavy packaging bags, shrink packaging films, elastic films, lining films. LDPE also has a wide range uses in construction films, general industrial packaging films and food bags.

2. Used for wire and cable insulation and sheathing. Cross-linked low density polyethylene is the main material for the insulation layer of high-voltage power cables.

3. For injection molding products, such as plastic flowers, medical appliances, pharmaceuticals and food packaging materials.

4. Extrusion molding pipes, plates, profiles and other products.

5. LDPE resin is used to produce blow-molded hollow products, such as food containers, containers for medicines, cosmetics, and chemical products, tanks, etc.

Sabic
Marlex
QAPCO
Dow
ExxonMobil
BOROUGE
Lyondellbasell
Sabic LDPE Marlex LDPE Lotrene LDPE DOW LDPE ExxonMobil LDPE Lyondellbasell LDPE
Sabic LDPEGrades
General grade2102NOW, 2102N3W, 2402H3W, HP2022JN, HP2023JN, HP2023NN,
Film grade2100NO, 2100NOW, 2101NOW, 2200HO, 2200H2, 2201HO, 2201H1, 2201H3W, 2404H4, 2404NO, 2500NO, 2501NO, 2501NOW, 2600HO, HP0322N, HP0322NN, HP0323NN, HP0722NN, HP0723JN, HP0823NN, HP20023, HP2025NN, HP2027LN, HP2027NN, HP4023WN, HP4024N, HP4023WN, HP4023WN, HP4027JN, HP4027NN, HP7022, HP7023
Tubular grade2005EC, 2008NO, 2015NO, 2308NO, 2402H3W , 2404NO,
Masterbatch grade1965NO,
Ultra Melt Strength (UMS) grade1905UO, 2202UO
Foam applications2004CX3, 2102XO, 2102X3, 2402CXO, 2600HO, 2602X1, HP0323NN, HP0823NN, HP2024JDF, HP2024NDF,
Food grade1922NO, 2201HOW, 2201H1W, 2602HOW, 2801HOW,
blown film extrusion grade2202H3W, 2402HO, HP0321NN, HP0723JN, HP0724NN, HP4025ZN,
Marlex LDPEGrades
Blow molding4538A, 5104
Injection Molding1007, 1009,1122B,1412, KN226
Blown Film1122, 5335, 5561, 5563, 5613, 5619, 5626, 5754, 5755
Cast film4571, 5428, 5429, 5430, 5440
Extrusion Coating and Lamination1013, 1017, 1018, 1019, 4517
Lotrene LDPEMG 70, LA0710, FB 3003, FB5026, FD0270, FD0274, FD0374, FD0474, FE3000, FE8000, FE8004
ItemGrades
DOW LDPELDPE 150E, LDPE 310E, LDPE 312E, LDPE 352E, LDPE 450E, LDPE 582E, LDPE 780E, LDPE 722, AGILITY EC7000, Agility EC7220, Agility XZ89166
ItemGrades
 ExxonMobil LDPELD 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
ItemGrades
Lyondellbasell LDPELD1800S, LD2420D, LD2420F, LD2420K, LD3020F, LD3020K
Main Features of LDPE Resin How Is LDPE Resin Prepared
  • The strength is lower than that of high density polyethylene hdpe, and the impact strength is greater than that of HDPE.
  • Cold, low temperature and high temperature resistance. The thicker film can withstand the sterilization process of soaking in hot water at 90°C.
  • Good moisture resistance, stable chemical properties, insoluble in common solvents.
  • It has greater air permeability. So when used as food packaging that is easily oxidized, the storage period of its contents should not be too long.
  • The oil resistance is poor, and the product can be slowly swelled.
  • It will age under the action of ultraviolet rays and heat for a long time, which will affect its physical and dielectric properties.
  • The melting point is 110~115℃, and the processing temperature is 150~210℃. If it is in an inert gas, the temperature can reach 300 ℃ and it is still stable. However, the melt is prone to degradation in contact with oxygen.
  • In addition to strong oxidizing acids, it is generally resistant to corrosion by acids, alkalis, and salts.
  • LDPE resin has excellent electrical insulation properties, low water vapor transmission rate and good fluidity.
  • It has good molding performance and is suitable for various thermoplastic molding processes such as injection molding, extrusion molding, blow molding, rotational molding, coating, foaming process, thermoforming, hot air welding, and thermal welding.

According to the polymerization method, low density polyethylene resin can be divided into high pressure method and low pressure method. According to the type of reactor, it can be divided into tank method and tubular method.

Using ethylene as raw material, it is sent into the reactor, and under the action of the initiator, the polymerization reaction is carried out under high pressure compression. The materials coming out of the reactor, after removing unreacted ethylene through the separator, are granulated by melt extrusion, dried, blended, and sent for packaging.

Both LDPE resin and LLDPE resin have very good rheology or melt flow. LLDPE is less shear sensitive because of its narrow molecular weight distribution and short chain branches. During shearing, LLDPE maintains a greater viscosity and is therefore more difficult to process than LDPE with the same melt index. As the deformation rate of polyethylene increases, LDPE resin shows a surprising increase in viscosity, which is caused by molecular chain entanglement.

Why Choose Fengbai Company

  • A leading LDPE resin supplier in China.
  • Stable supply & fast delivery.
  • Free samples for testing.
  • Various packaging to meet customers’ requirements.
  • ISO quality, good service and competitive prices.
  • Good cooperation with cargo agents and shipping companies.

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