Pre-stretch structure improves film adhesion and keeps goods stable during handling
Pallet loads come in many forms—from neatly stacked cartons and drums to irregular mixed loads—and how the film adheres to various shapes during wrapping determines the final packaging effect. The pre-stretch carriage, using either a gearing mechanism or motorized stretching, expands the film before it contacts the load, increasing film coverage and evening out applied force. The product documentation mentions both pre-stretch and brake (resistive) stretch options to handle different films and application scenarios. In practice, pre-stretching gives the film higher toughness and retractile force during wrapping, producing a tighter wrap suitable for industries with high stability requirements such as food & beverage, chemical raw materials and e-commerce warehousing. For heavy or irregular pallet loads, pre-stretch wrapping forms a more compact protective layer that keeps goods stable during forklift handling and vehicle acceleration/deceleration.
Automatic film feeding/cutting and dual-chain mast improve operational efficiency
In manual wrapping processes, operators constantly bend, circle and pull film tight—this is both physically demanding and inconsistent. The pre-stretch machine automates film clamping, cutting and finishing with pneumatic control: the automatic film on/off mechanism cuts the film at the end of the cycle and presses the film tail onto the load. This allows continuous operation in assembly-line or batch pallet wrapping environments.
The lift uses a dual-chain structure with VFD (variable frequency drive) speed control to ensure stable vertical motion, keeping wrapping actions coordinated across heights. The machine features a PLC control system with a text display for visible operation logic, and it supports adjustable wrap modes, turn counts and film tension settings. For factories with diverse packaging demands, these configurable parameters adapt flexibly to different pallet sizes and packaging standards.
In terms of throughput, a pallet wrapper can handle about 20–40 pallets per hour—significantly accelerating outbound turnover for mid-to-large production or warehouse facilities.
Robust load capacity and high adaptability meet multi-industry pallet packaging needs
Standard pre-stretch stretch wrappers are typically equipped with an 1800 mm turntable, 2000 kg load capacity and a 500–2000 mm packaging height range—covering most pallet types. Examples include stacked cartons, chemical drum pallets, beverage pallets, building material stacks and packaged glass. As multiple industries raise requirements for pallet stability and protection, pre-stretch wrappers are used not only at packaging lines but also in warehousing, logistics, sortation centers and third-party distribution.
Industry case: improved packaging consistency and reduced film consumption
A food processor that installed a fully automatic pre-stretch wrapper at its outbound line adjusted the pre-stretch ratio and wrap counts to achieve tighter film adhesion and more uniform layering. The company reported reduced film usage while maintaining the same securing strength; pallet stacking stability improved and load shifts during transport decreased—helping lower rework and re-sorting costs.
In summary, pre-stretch stretch film wrapping machines combine pre-stretch carriages, automatic film on/off, dual-chain masts and PLC control to provide efficient pallet film protection. They are highly adaptable to different pallet heights and sizes, improve film utilization and create tighter, more stable wraps—making them a valuable unit in palletized packaging across many industries.