How does a pallet wrapping machine work?

This guide on pallet wrapping aims to enhance the wrapping process for anyone involved, whether the goal is to boost operational efficiency, improve load stability and safety, cut costs, reduce the volume of stretch wrap utilized, or all of the above.

SMART WASP offers a variety of related products and information for further exploration.

Understanding Pallet Wrap

Pallet wrap, also referred to as stretch film or load stability film, is a specialized, thin plastic film that can stretch significantly while wrapped around a pallet. Unlike standard cling film, pallet wrap is designed for high performance, ensuring products remain secure and protected during storage and transportation. Two primary categories exist: hand pallet wrap for manual use and machine film intended for automated wrapping machinery. Both types are manufactured using one of two processes:

Blown film is created by forcing air through molten plastic, forming a "balloon" that cools into a film before being rolled. The manufacturing process allows control over the film's thickness by adjusting the plastic input and airflow.

Cast film, on the other hand, is produced by horizontally extruding melted polymer through a flat die, creating a sheet that is cooled and trimmed before being rolled. Modern multi-layer cast films maximize performance through tailored properties, offering remarkable holding force, puncture resistance, and clarity. Some of these films, utilizing nano technology, are referred to as nano films and can be extraordinarily thin.

When is Pallet Wrap Necessary?

As of now, properly applied pallet wrap remains the most efficient means of safeguarding goods on pallets, ensuring reliable load stability. This is crucial, as data indicates that unstable loads during transportation contribute to a sizable number of traffic accidents involving commercial vehicles. Given the advancements in stretch film and wrapping machinery, pallet wrapping is often preferred over plastic strapping due to its enhanced effectiveness and cost-efficiency. Market-leading films are also specifically designed to comply with regulations like the EUMOS Load Rigidity Legislation for Cargo Transportation. For organizations shipping or storing products on pallets, utilizing some form of pallet wrap is nearly inevitable.

Choosing the Right Type of Pallet Wrap

With a vast array of pallet wrap options available, users may find navigating these choices challenging. The initial distinction between hand pallet wrap and machine film is straightforward; however, many users may refer to standard pallet wrap as stretch film since it must be stretched around the pallet to provide desired load stability. Pre-stretched film is another option in the market, allowing better performance with reduced thickness required, often down to just 6 microns.

Ultimately, the selection of pallet wrap depends on several factors, including:

• Number of pallets wrapped
• Type of product
• Weight of pallets
• Labor availability

Pallet wrapping machines can be categorized into two main types: Core Brake machines and Power Pre-stretch machines. Core Brake machines function similarly to manual wrapping, with film applied directly from a spool to the pallet. In contrast, electric powered pre-stretch machines utilize geared rollers to stretch the film before application, enhancing stability.

Types of Pallet Wrapping Machines

Turntable Machines

Turntable pallet wrappers are the most prevalent machines available. By placing the pallet on a spinning turntable, the film wrapping head moves up and down, securely wrapping the load. While versatile for most loading situations, they often require a ramp or extensive civil work for integration.

Rotary Arm Machines

These machines employ a rotating arm to wrap the pallet while the load remains stationary. Their compact design eliminates the need for a ramp, making them suitable in tight spaces.

Mobile Pallet Wrappers

Robot wrappers offer high mobility, wrapping loads in varying locations and accommodating individually shaped or oversized pallets. Though typically slower than turntable models, they are primarily designed as Power Pre-stretch machines.

Inline Pallet Wrappers

Inline pallet wrapping machines are often used in fully automated production lines as a final step before shipment. The choice among Turntable, Rotary Arm, or Ring machines depends on speed requirements and budget considerations. For a visual representation, you can view an inline machine in action.

For those wrapping 30 or more pallets daily, investing in a pallet wrapping machine can substantially lower the cost-per-pallet-wrapped, often leading to a positive return on investment within a year. Additionally, this increases load stability and minimizes plastic usage compared to hand wrapping.

For more details, check out Machine Applied Pallet Wrap.

When contemplating the installation of a pallet wrapping machine, it is crucial to partner with a supplier that offers both machinery and wrapping film to ensure optimal performance and compatibility for the best wrapping outcome.

Selecting an Appropriate Pallet Wrapping Solution

Each pallet wrapping scenario presents its unique challenges. Key considerations for selecting the right approach include:

1. Load stability: Will the load remain secure throughout handling, transit, and storage?
2. Cost analysis: What is the total cost per pallet once all factors are considered?
3. Plastic waste: How much single-use plastic is necessary for effective wrapping?
4. Time efficiency: How long does it take to wrap each pallet?

China Heat Wrap Machine for more insights into optimizing your pallet wrapping operations.