Most of us are familiar with classic types of plastic such as polyethylene terephthalate (PET), polypropylene (PP) or polyethylene (PE). Each of these polymers has its own properties and is therefore well suited to different applications.

Since the focus in flexible packaging has shifted towards design for recycling, the properties of plastics have been re-evaluated and their manufacturing processes further developed. Certain materials are particularly suitable for specific use cases such as high density polyethylene (HDPE). Retail Partner has innovated the world’s first High Barrier HDPE (HB-HDPE) dubbed Resin2Film.

To obtain HD-PE, polyethylene is subjected to a special process: it is stretched in the machine’s running direction. This is necessary because PE itself can be a very stretchy (LDPE) or rather hazy (HDPE) plastic. Standard PE can be used very well for sealing processes, but makes life difficult when it comes to printing or stability of the final pack.

So why do we want to use HDPE at all and not focus on other plastics such as the less soft PET?

One of the reasons lies in the current development of the recycling infrastructure: there are very good existing recycling loops for polyethylene in many European countries. Also, PE is more versatile than other polymers.
If you take PET, for example, it is difficult to seal or could therefore not be easily integrated into modern, fast production processes

ALSO

The Truth About LDPE (Resin 4): Misleading Recycling Claims by Major Companies

Claiming that LDPE (Resin 4) is recyclable is like drinking alcohol and calling it hydration—misleading and harmful. It contributes to landfill waste and diverts attention from real environmental solutions.

As consumers become more eco-conscious, the demand for recyclable materials has grown. However, despite claims by some major companies, LDPE (Resin 4) and other resins like 3, 5, 6, and 7 are not as recyclable as they are often portrayed. While LDPE can theoretically be recycled, significant practical challenges remain largely unaddressed by the industry.

The stark reality is that 94% of all pouches, bags, and bag-in-box liners made from LDPE and other Resins 3, 4, 5, 6, and 7 end up in landfills. This is because many recycling centers do not accept LDPE due to the specialized machinery required for its processing. The few facilities that do accept LDPE often contribute to a larger carbon footprint due to the long distances these materials must be transported.

Hawaii, a state known for its environmental leadership, has banned all plastic bags except those made of PET (Resin 1) and HDPE (Resin 2). It is anticipated that other states may soon adopt similar legislation to combat the environmental impact of non-recyclable plastics.

The narrative that LDPE is easily recyclable is misleading, allowing major companies to falsely position themselves as environmentally friendly. This misinformation leads to more waste ending up in landfills and undermines genuine environmental efforts.

Consumers are urged to be informed and make responsible choices. HDPE (Resin 2), unlike LDPE, is truly recyclable and offers a sustainable option for reducing environmental impact. Choosing Our Resin2film can make a significant difference in achieving sustainability goals.