Pallet Wrapping Machine With Black Load Height Detection: Wrapping Dark Loads to the Right Height

Executive summary This clip shows our stainless turntable pallet wrapper wrapping a dark, black load. The film carriage climbs the mast, finds the top of the load and wraps down again, so the whole load is covered. Dark surfaces reflect little light, so a standard photo-eye can miss them; for black loads we fit a sensor set for dark surfaces.

Table of Contents

What the clip shows

Step What you see
Start A dark load stands on the turntable
Bottom wraps The carriage wraps the base of the load
Climb The carriage climbs, wrapping in a spiral
Top The carriage stops at the top of the dark load
Finish The load is fully wrapped from base to top

Why dark loads need a different sensor

  • Low reflection. Black film and goods return little light to a standard photo-eye.
  • Missed top. A sensor that cannot see the load stops early or runs past the top.
  • Our fix. A sensor set for dark surfaces, so the carriage stops at the real top.
  • Result. Full coverage on every load, light or dark.

Film per pallet

Worked example (illustrative).

Item Value
Load (illustrative) 1,200 × 1,000 × 1,500 mm
Load girth, 2 × (1,200 + 1,000) 4,400 mm
Film width (illustrative) 500 mm
Spiral advance at 50% overlap, 500 × 0.5 250 mm
Turns to climb, 1,500 ÷ 250 6 turns

This covers the climb only; the full cycle adds top and bottom wraps and the pass back down.

What we set per load

Setting Depends on
Height sensor Load colour and surface
Pre-stretch Film type
Top and bottom wraps Load stability
Turntable Pallet size and weight

Selection checklist

  • Pallet size and load height.
  • Load colour and surface.
  • Load weight.
  • Film type and pre-stretch.
  • Pallets per hour.
  • Stainless frame needed or not.

Safety

  • Keep clear of the turning load and the carriage.
  • Stop the machine before changing film.
  • Do not stand on the turntable.
  • For CE markets, the machine is designed to ISO 12100 and EN 415-6.

Engineering FAQ

Q: Why do black loads need special detection? A: Dark surfaces reflect little light, so a standard photo-eye can miss the top.

Q: What does the machine do differently? A: It uses a sensor set for dark surfaces so the carriage stops at the real top.

Q: How many turns does a load need? A: Load height divided by spiral advance; 6 turns up in the worked example.

Q: Is the frame stainless? A: The machine in the clip has a stainless finish.

Q: Can it wrap light loads too? A: Yes, the same sensor works on light and dark loads.

Q: Which standards apply? A: For CE markets, ISO 12100 and EN 415-6.

Next step

We match a pallet wrapping machine in three steps:

  1. Submit your layout drawing with pallet sizes, load colours and pallets per hour, to info@fhopepack.com.
  2. Receive a proposal within 48 hours with the machine data and layout.
  3. Book a site survey so we confirm the floor space.

Sources

  • Machine content: FHOPE engineering team, 2026-10-10
  • Clip: the video on YouTube
  • Film per pallet: our worked example, illustrative values
  • Standards scope: ISO 12100:2010; EN 415-6:2013
  • Proposal timing: approved house CTA (proposal within 48 hours)

Last reviewed: 2026-10-10