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LDPE Plastic Bags, also known as Low-Density Polyethylene (LDPE), is a soft and flexible polymer. It has a lower density, strength, and temperature resistance than HDPE plastics.
The polybag structure features a higher degree of short and long side-chain branching, produced at a high pressure of 1000 to 3000 bar and a low temperature of 80ºC to 300°C. This manufacturing process is known as “Free Radical Polymerisation,” and it is a type of chain-growth polymerisation in which the polymer takes shape due to continuous additions of unsaturated monomer molecules to an active, free radical centre.
LDPE plastic bag is a suitable polymer with excellent processability. It has a high impact strength at low temperatures, as well as chemical resistance, weather resistance, excellent electrical insulator, low water absorption, meets FDA regulations, and is transparent in thin foil film.
LDPE Plastic Bags key features consist of it being:
• Lightweight, low-cost and weatherproof
• Largely flexible, making it malleable and easily moulded into various shapes & sizes
• Resistant against chemicals such as alcohols, dilute acids, and alkalis
• Protected against other elements including moisture, dust, dirt, oil, and grease
• An excellent electrical insulator
• FDA approved
• Recyclable
Overall, LDPE Plastic Bags are segmented and ranked fourth among plastics. Its primary use is in film applications, and some everyday products include food plastic bags, shrink wrap, and stretch film. Due to their physical properties, LDPE Plastic Bags have exceptional resistance to chemicals such as alcohols, dilute alkalis, acids, and other elements containing moisture, dust, dirt, oil, and grease. Furthermore, it is FDA-approved, making it safe for contact with perishable food items.
There are also many other packaging solutions for food products. These include products such as desiccants, oxygen absorbers, and ethylene absorbers which can extend the shelf life of food products while preserving their freshness and quality.
