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High-shrinkage biaxially oriented polystyrene film for window envelopes and overwrapping, where a high shrink ratio gives a tight form fit and clear visibility of the contents.

The film is suited to printed and metallised grades for display packaging, and shrinks evenly in tunnel lines without distorting paperboard or plastic trays. Technical data sheets cover the available gauges and shrinkage values. Buyers are converters producing windowed cartons, stationery packs and multi-packs.