
1) Freight transport
Found on
https://www.crosswordclues.com/clue/slip-sheet

Slip sheets are thin pallet-sized sheets made of plastic, heavy laminated kraft paperboard, or corrugated fiberboard used in commercial shipping. Often, these replace the use of traditional wooden pallets. The unit load is usually stretch wrapped or shrink wrapped for stability. The slip sheet is used as a unit load support device in vehicle deliv...
Found on
http://en.wikipedia.org/wiki/Slip_sheet

Blank sheet placed between newly-made printed products to prevent setoff or scuffing during handling and shipping.
Found on
http://www.e-printing.co.uk/glossary.htm

A release treated sheet used to protect the edges of rolls from sticking to each other while stacked.
Found on
http://www.encyclo.co.uk/local/20829

Usually a piece of cardboard or plastic sheeting that a load is piled upon to be moved with a special fork lift equipped with shovel forks and a push/pull attachment.
Found on
http://www.mhia.org/learning/glossary/s
No exact match found.