LDPE

LDPE (Low-Density Polyethylene)

LDPE is produced via a high-pressure process, resulting in long and irregular branching in the polymer chains. This structure prevents molecules from packing closely, leading to a low density (approx. ) and a lower melting point.

  • Characteristics: Very high flexibility, softness, high clarity, and excellent heat sealability.

  • Applications: Manufacturing of thin packaging films, protective covers, freezer bags, and shrink film.
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LDPE film grade

GRADE MFI Density Application Datasheet
LD-2420D 0.25 (190°C / 2.16kg) 0.923 Bags & Pouches - Bottles for Consumer Goods - Shrink Film - Blown Film
LD-LFI2130 0.3 (190°C / 2.16kg) 0.921 Blown film extrusion - heavy duty packaging film - shrink hoods - industrial sacks - carrier bag and liners
LD-2420F3 0.3(190°C / 2.16Kg) 0.923 Heavy duty packaging - shrink hoods - Inliners
LD-0075 0.75 (190°C / 2.16kg) 0.92 carrier bags - shrink film - industrial film - dust bin liners - large bottles - blow molding of small containers - packaging of pharmaceutical products - packaging of foodstuffs - bottles for storage of chemical products
LD-2420E02 1.9(190°C / 2.16Kg) 0.923 General Purpose - Cast Films - Fine Shrink Films - High Clarity Films
LD-2426E02 1.9(190°C / 2.16Kg) 0.924 General Purpose Blown and Cast film - Freezer Films - Hygiene and food packaging FFs Film
LD-LFI2119 1.9(190°C / 2.16kg) 0.921 general purpose film - lamination
LD-2420H 1.9 (190°C / 2.16kg) 0.924 bags - pouches - shrink film - blown film - cast film
LD-0200 2 (190°C / 2.16kg) 0.92 general purpose bags - packaging of mechanical parts - carrier bags - coextruded milk bags - low tension power cables insulation - industrial injection moldings
LD-LFI2125A 2.5 (190°C / 2.16kg) 0.921 Blown film extrusion - packaging film for food and goods - general lamination film
LD-2420D 0.25 (190°C / 2.16kg) 0.923 Bags & Pouches - Bottles for Consumer Goods - Shrink Film - Blown Film
LD-LFI2130 0.3 (190°C / 2.16kg) 0.921 Blown film extrusion - heavy duty packaging film - shrink hoods - industrial sacks - carrier bag and liners

LDPE Extrusion grade

GRADE MFI Density Application Datasheet
LEC-1969 6.9 (190°C / 2.16kg) 0.954 fishing-net rope-agricultural net-tarpaulin-woven sack

LDPE Injection Molding Grades

GRADE MFI Density Application Datasheet
LIM1922 22 (190°C/2.16kg) 0.919 toys caps household articles

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Key
Materials and Applications in Film Casting

The
choice of polymer raw material is crucial for determining the
final film properties and is heavily influenced by the desired application:

1.
Polyethylene (PE) Grades

  • LLDPE (Linear
    Low-Density Polyethylene):     Widely used for high-clarity cast film
    applications due to its superior toughness and puncture resistance. It is
    the core material for high-performance stretch film.
  • LDPE (Low-Density
    Polyethylene):     Used for seal layers in laminates where easy heat-sealing and low
    cost are prioritized.
  • HDPE (High-Density
    Polyethylene):     Less common for thin films but used for stiffer, stronger cast
    sheets and liners requiring chemical resistance.

2.
Polypropylene (PP) and Other Polymers

  • Cast Polypropylene
    (CPP):     Highly popular
    for flexible food packaging, textiles, and medical packaging due to its
    high heat resistance and excellent barrier properties.
  • PET (Polyethylene
    Terephthalate):     Cast into high-strength, thin films for electrical insulation,
    optical displays, and specialty barrier layers.

Critical
Applications

The
high-quality output of the film casting process
supports demanding markets:

  • Flexible Packaging: Retort pouches, stand-up
    pouches, snack food bags (often as a substrate for printing or
    lamination).
  • Hygiene and Medical: Non-woven laminates, breathable
    barrier films for surgical drapes and wound care.
  • Technical Films: Release liners, protective films
    for electronic displays, and specialized barrier films for solar panels
    (photovoltaics).

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