Polyethylene – PE

Light, versatile synthetic resin made from the polymerization of ethylene. Polyethylene is a member of the important family of polyolefin resins. It is the most widely used plastic in the world, being made into products ranging from clear food wrap, detergent bottles and toys to automotive parts, hospital equipments and electronics.

PE is classified by its density, branching and presence of comonomer.

LDPE (Low Density Polyethylene)

Low-density Polyethylene is soft, lightweight, tough, and flexible in its nature. Thermoplastic material is known for having low-temperature compatibility and good corrosion resistance. The polymer also boasts good chemical properties and impact resistance, making it easy to fabricate or process. It has a melting point of 110°C.

Benefits

High impact strength, good processability, good resistance properties

Applications

Blown FilmGeneral purpose, food packaging, Agriculture bags, shrink & stretch film
Injection MoldingFood containers,toys, consumer goods, industrial parts, medical parts
PipesWater pipes and hoses
Wires & CablesCable Jacketing and coatings 

Recycling Code

LLDPE (Liner Low Density Polyethylene)

Linear low-density polyethylene is a thermoplastic widely used in the packaging industry. It can easily be formed into film-like materials that retain significant tensile strength. Its molecular chains contain relatively short branches when compared to other PE’s. Linear low-density polyethylene is a semi-crystalline polymer with many short branches on its main molecular chains. This means that these linear molecules do not become entangled as easily as LDPE and HDPE.

Benefits

High impact strength, puncture resistant, good flexibility, excellent barrier properties

Applications

Blown FilmFood packaging, Shopping bags, Cling films, Shrink Wrap, agricultural films, liners, membranes 
Injection MoldingLids, caps, closures, toys 
PipesPipes, cables 
Roto MoldingTanks  

Recycling Code

HDPE (High Density Polyethylene)

HDPE is used in a wide variety of applications like flexible & rigid packaging, milk jugs, shampoo bottles, bleach bottles, cutting boards, and piping. Known for its outstanding tensile strength and large strength-to-density ratio, HDPE plastic has a high-impact resistance and melting point. HDPE is the perfect combination of strength, cost-efficiency, and environmental friendliness.

Benefits

Easily meltable & moldable, corrosion resistance, easily recycled

Applications

Blow MoldingSmall to large bottles, Jerry cans, drums 
Blown FilmShopping, grocery, garbage, and freezer bags   
Injection MoldingCaps & closures, crates, pallets, housewares, and furniture
PipesGas & water piping system, industrial piping system  

Recycling Code

mPE (Metallocene Polyethylene)

Metallocene Polyethylene, also known as mPE, is a special type of thermoplastic made by using metallocene catalyst with copolymers. It exhibits properties like uniform co-monomer content, narrow molecular weight distribution, higher resistance to puncture & damage, high toughness, tensile strength and stiffness.

Benefits

Polyethylene produced using a metallocene can be used as a very thin film which has excellent optical properties and sealing performance, thus making it very effective for wrapping foods.

Applications

Blown FilmHDSS, standup pouches, multilayer food packaging, stretch cling film 

MDPE (Medium Density Polyethylene)

MDPE is less dense than HDPE and has properties of higher stiffness, dart impact strength and tear strength. MDPE has good shock and drop resistance properties. It also is less notch sensitive than HDPE. The stress cracking resistance is better than that of HDPE.

In the United Kingdom, black (or blue) MDPE is often used for water and waste water plumbing, and may also be referred to as ‘black alkathene.’

Benefits

High resistance to heat, better stress cracking resistance & notch sensitivity

Applications

Blown FilmTubes, stand-up pouches, over-wrap film, milk pouches, lamination film  
ExtrusionPipes. Geomembrane
Roto Molding