The best plastic for packaging depends on factors like product type, desired properties, and environmental concerns. Common options include:

1. Polyethylene (PE): Flexible and moisture-resistant, used for bags and wraps.
2. Polypropylene (PP): Offers chemical resistance, suitable for containers and trays.
3. Polyethylene Terephthalate (PET): Transparent with good barrier properties, ideal for bottles and food packaging.
4. Polystyrene (PS): Lightweight and clear, used for cups and trays.
5. Polyvinyl Chloride (PVC): Versatile but raises environmental concerns.
6. Polyethylene Terephthalate Glycol (PETG): Enhanced durability, used for fragile items.
7. Polylactic Acid (PLA): Biodegradable and compostable, but with limitations in heat resistance and barrier properties.

Considerations include performance, environmental impact, and end-of-life disposal options.

When selecting the best plastic for packaging, it’s essential to consider not only the performance characteristics but also the environmental impact and end-of-life disposal options. Increasingly, there’s a trend toward using biodegradable, compostable, or recyclable materials to mitigate the environmental impact of packaging.