Where polythene shrink wrapping fits
Polythene shrink wrapping, often referred to as PE shrink wrapping, is a common route for heavier packs, grouped products and transit packaging. A sleeve sealer wraps PE film around the pack and a shrink tunnel tightens the film around the product group.
The route can suit bottles, cans, cartons, trays, timber, boxes and other grouped products, provided the film, machine and tunnel are specified for the application.
Machine specification for PE film
PE film behaviour differs from lighter display films, so tunnel length, airflow and heat control need attention. Film thickness, pack weight and required pack strength all affect the recommendation.
The sealing jaw and film unwind must also be matched to the film width and pack size. A poor film size can cause waste, weak containment or inconsistent shrink finish.
Choosing between manual, semi and automatic routes
Manual or semi-automatic routes can be practical for lower volume or mixed product requirements. Automatic polythene shrink wrapping machinery is more suitable where packs are repeated and production needs consistent throughput.
Lancing can advise on the route after reviewing product data, target output and site layout.
Quote route and specification checklist
| PE shrink wrapping factor | Impact |
|---|---|
| Film thickness | Affects strength and heat requirement. |
| Pack weight | Influences conveyor and tunnel requirements. |
| Output | Controls machine automation and tunnel dwell. |
| Pack dimensions | Determines jaw width, film width and tunnel aperture. |