1) What compression ratio should I ask for\u2014and how do I verify it?<\/h3>\n

Start with your downstream buyer: ask what form they accept (block vs. ingot) and whether they have a minimum density or a preferred block size. \u201cCompression ratio\u201d is only useful if it produces a consistent output you can stack and ship. The simplest verification method is a production trial: run the machine for a full shift, then weigh and measure multiple blocks\/ingots and compare consistency. If the vendor can\u2019t provide sample outputs, site references, or a trial plan, treat that as a risk.<\/p>\n

2) Should I choose cold compaction or hot melt for contaminated EPS?<\/h3>\n

If your EPS is mostly clean packaging, cold compaction is often the simpler path because it avoids thermal processing and typically reduces siting complexity. If your site pushes very high volumes and your buyer pays more for denser ingots, hot melt can make sense\u2014but plan for hot surfaces, higher power draw, and ventilation. For any stream with labels, tape, or food residue, confirm acceptance requirements with your recycler first; contamination, not the machine, is a common reason loads get downgraded.<\/p>\n

3) How do I size throughput if my EPS is \u201call air\u201d and hard to weigh?<\/h3>\n

Measure volume and labor, not just weight. Track a peak day: how many bags\/bins\/gaylords of EPS do you generate, and how many minutes per hour can staff realistically feed the machine? Convert that into an \u201cavailable run time\u201d target (for example, 60\u2013120 minutes\/day). Then request a vendor trial or a reference case using similar EPS types (packaging vs. construction insulation) to validate real-world throughput. To avoid misunderstandings, ask the supplier to quote capacity in the same unit you track (bags\/hour, bins\/hour, or loose cubic volume\/hour). The goal is to avoid overflow during peak receiving days.<\/p>\n

4) What site requirements should I confirm before ordering?<\/h3>\n

Confirm power (voltage\/phase\/Hz), footprint, and how you\u2019ll handle incoming foam and outgoing blocks. If you choose hot melt, add ventilation requirements, hot-surface clearance, and where the ingot will cool and be staged safely. Also confirm noise and dust management expectations with your EHS team. Don\u2019t forget material handling: where will blocks be stored, and will a pallet jack or forklift be used for staging and loading? For any install, ask for an electrical diagram, foundation\/anchoring notes, and a commissioning checklist so the machine can be started without last-minute facility changes.<\/p>\n

5) Which wear parts drive downtime, and what should I stock?<\/h3>\n

On compactors, the screw\/auger and any cutting components are common wear items, especially if operators accidentally feed contaminants (wood, metal, straps). Ask the vendor for a wear parts list with recommended spares, typical service intervals, and photos of \u201cend-of-life\u201d wear so your team can inspect confidently. Also confirm whether parts are off-the-shelf (motors, hydraulics) or proprietary, and whether the supplier keeps critical spares in stock. Keeping a small kit of critical spares can prevent multi-week downtime waiting on a shipment, especially if your operation depends on daily pickups.<\/p>\n