Shrink wrap is a popular method of packaging among bakery manufacturers as more of private label customers prefer this kind of packaging . It based of the principle where poly film is heated and allowed to cool thus the film acquires the shape of the pack through shrinkage
Shrink wrap are commonly used for over wrapping Cartons and Display boxes ,normally of small sizes .Display boxes are the most used in the bakery industry for shrink wrap application . Consumers gets clear view of product in this kind of packaging .
Shrink wrapping machine consists of . Heat tunnels or ovens, Heat guns, L-Sealers, and Shrink Chambers are used for large items. There are also Manual shrink wrap machines that characterize for being portable, light weight, built to last, and a cost-efficient option for low to moderate production lines.
Other items such as cartons , beverages bottles , cans and small pallets are shrink wrapped .
Major advantage with shrink wrapping
- It helps unitizing i.e. keeping products in a compact form .
- Keeps box and product clean
- Consumers can views products
- Convince to consumers in handling
- Helping in palletization
- Extra protection
Common shrink wrap films are Polyolefin other material is PVC. Key properties of shrink wrappers are thickness,shrink, sealability, optics, toughness and slip . Shrink films can be produced in way where it can shrink only in one direction unidirectional and both ways bidirectional.
