Many recycling yards collect not only OCC carboard but also plastic film, woven bags and light plastic packaging. Without proper planning, this mixed stream quickly creates issues:

• Paper and plastic baled together reduce the acceptance and price from both paper mills and plastic recyclers;

• Trying to handle everything with one baler often leads to either poor compaction or fear of damaging the machine.

1) Define your “primary” and “secondary” materials

• If OCC cardbopard  is clearly dominant and plastic is minor, baler selection should focus on OCC conditions;

• Plastic can be sorted out early and baled on the same machine under lower pressure, with the main goal of reducing volume and improving handling;

• If paper and plastic volumes are similar, you may need a second line dedicated to light packaging.

2) Look at adjustable pressure and stroke ranges

• Some horizontal balers support multiple sets of pressure and stroke parameters, switchable via programs;

• For mixed-material yards, this is more practical than a single high-pressure mode, allowing you to switch between “OCC mode” and “plastic mode” based on the day’s material mix.

3) Consider the impact of plastic on conveyors and seals

• Long, thin film strips tend to wrap around conveyor rollers, bearings and chains, increasing maintenance;

• Sharp-edged rigid plastics caught in moving parts can damage seals and hoses, so protective measures should be discussed with the manufacturer at the design stage.