LDPE Plastic Bags

Low-Density Polyethylene, also known as LDPE plastic, is a soft and flexible polymer. Unlike High-Density Polyethylene (HDPE) which is known for its high specific strength and heat resistance, LDPE has a lower density, strength, and temperature resistance. This lower density and resistance is due to the slight difference in the polybag structure where the LDPE features a higher degree of short and long side-chain branching—manufactured at a high pressure of 1000-3000 bar and a low temperature of 80-300°C. This process is known as Free Radical Polymerisation, a type of chain-growth polymerisation that occurs when the polymer forms through consecutive additions of unsaturated monomer molecules to an active, free radical centre.

The formation of this plastic material makes it a suitable polymer with superb processability, high impact strength at low-temperature levels, chemical resistance, excellent electrical insulator, good weatherability, low water absorption, and transparency in thin foil film. Furthermore, it also meets FDA regulations, making contact with food products safe.

  • Low-cost, lightweight, and weatherproof
  • Excellent Insulation Properties – Unlike HDPE, the LDPE is a superb insulator, making it ideal for protecting electrical equipment without causing electric sparks that might potentially cause damage to electronics.
  • Highly Flexible and Transparent – the high flexibility of the material makes it malleable and easy to process and mould into various shapes and sizes to meet different applications
  • Recyclable – recycled LDPE can produce various relevant products, such as shipping envelopes, compost bins, trashcans, garbage can liners, furniture, floor tiles, and many more.

Categorised and featured as the number 4 plastic, the primary uses of the LDPE are for film-related applications. Typical products manufactured using this material include food plastic bags, shrink wraps, stretch films, and other packaging solutions. These are made possible due to the plastic material’s physical properties, which provide excellent chemical resistance against chemicals such as alcohols, dilute acids, and alkalis, as well as other elements that include moisture, dirt, dust, oil, and grease. Furthermore, it is also FDA-approved, making it safe for contact with food products.

Here in Humi Pak, we provide other packaging solutions for food products. Further, increase the shelf life of food with Desiccants and Oxygen Absorbers. Click here to read our blogs and learn more about our different products or watch our video here!