Beverages use three common outer plastic film packaging processes: shrink wrapping, stretch wrapping, and labeling.
Shrink wrapping
Heat shrink film such as PVC or POF shrinks when heated and clings to the product. A packaging machine first applies the film over a bottle or a group of bottles. The pack then moves into a shrink tunnel heated by hot air or infrared. The film shrinks and sets. This is common for multi-bottle retail packs like six-packs of cola. It is also used for single plastic bottles.
Stretch wrapping
A wrapping machine spirals film around the load. Film elasticity holds the load together. The full pallet sits on a turntable. As the machine turns, film pulls from the carriage and wraps from top to bottom or bottom to top. This is mainly for securing full pallets in logistics. It keeps loads from shifting or colliding in transit.
Labeling
Pre-printed plastic film labels such as PVC or PET are applied to containers by a labeler. The labeler picks the label, applies glue, and rolls it onto the bottle in the correct position. This is the main packaging form for single bottles. It shows brand, product information, and barcode.
Hansheng Automation machines replacement and custom parts for this equipment from customer drawings for one-off and small-batch orders.
