Shrink wrapping is one of the most popular packaging solutions in many industries globally. Depending on your machine’s capability, you can wrap many products in different directions.
In case you are wondering what shrink wrap machine is, how it works or whether it can meet your industrial packaging needs, then this guide has all information you’re looking for.
What is Shrink Wrapping Machine?
A shrink-wrapping machine is a packaging equipment that wraps a plastic shrink film around a product or products, while applying heat. Usually, this heat causes the plastic film to shrink tightly and securely seal the products it’s subjected to.
How Shrink Wrap Machine Works
The working principle of shrink wrap machine is quite straightforward. However, to make it easier for you to understand, we shall explain this based on various parts of the shrink wrapping machine.
First, this shrink wrapping starts by configuring the machine to fit the products you wish to wrap. You will achieve this through the control panel. In most cases, the fully automated machines feature an automated PLC system with a touchscreen panel.
It not only helps you to configure, but also the ability to monitor various shrink wrapping statistics. Of course, this depends on the machine type.
Second, ensure the machine has the required specification of shrink wrap films. At the same time, the products you want to seal should also be in place.
Now what follows are series of operations where the machine, through its conveyor system, moves the products to the wrapping platform. The shrink wrapper automatically applies the film, wraps around the product and cuts excess material.
Of course, the machine also applies heat for proper sealing mechanism.
For instance, we have:
- Sealer – The sealer creates an air-tight edge around the product after it has been tightly wrapped by the plastic film.
- Shrink Tunnel – The shrink tunnel provides a controlled, heated environment that causes the plastic film to enclose tightly around the products.
- Sealing Wires – The sealing wires heat up, making the plastic film wrap around the products and seal them.Also, these sealing wires cut and separate the plastic film used in the wrapping process from the unused roll.
- Cooling Fans – These cooling fans function to cool the plastic film that wraps around products, ensuring that the products are secure and sealed tightly.
Remember, during the shrink wrapping process, there are other processes that ensure effective packaging. You should note that during the shrink wrapping process, the Teflon coated rollers ensure effective transportation of products across the shrink tunnel.
At the same time, temperature control regulates the amount of heat that is applied to the plastic film. This ensures your products are sealed properly.
Although the sequence of actions may very from one shrink wrapper machine to another, the fundamental stages still remain the same. That is, moving products to wrapping platform, applying the film, using heat for proper sealing, cutting excess film, and ejecting sealed products.
Types Of Shrink Wrapping Machines
· Semi-automatic shrink wrappers
Semi-automatic shrink wrappers are packaging machines that use automated systems and manual handling of products in their operations.What typically happens is that the operators manually place and position the products on plastic films while the machine heats and seals them.
These machines are ideally used in operations and places that are small-scale, and that speed and consistency are a necessity. Besides, semi-automatic shrink wrappers are not costly to buy and install making them a perfect option for small industrial operations.
Semi-automatic shrink wrappers are used in packaging of several products including electronics, beverages and food for storage and transit.
· Automatic Shrink Wrappers
Automatic shrink wrappers are machines that fully automate the wrapping and packaging process, from aligning the products, sealing and packaging them.
These machines are highly effective in consistently sealing and packaging products, making the process faster. Furthermore, automatic shrink wrappers are a perfect solution for large-scale operations and industries such as food and drinks.
These machines are flexible can easily manage and handle products of different shapes and sizes, making them very convenient.
· Rotary Arm Shrink Wrappers
A rotary arm shrink wrapper is a type of stretch wrapping machine that is mainly designed for wrapping unstable products.
It has a rotating arm that evenly moves the packaging film tightly around the products without causing damage and changing the product position.
In most cases, this machine is ideally used on products that are irregularly shaped and cannot easily fit through the shrink tunnel or conveyor belt.
Remember, rotary arm shrink wrappers are mainly used in packaging industries that require high-speed operations. As a matter of fact, these machines make the products more stable and secure, protecting them from damage during transit.
· Box Shrink Wrapping Machine
These are machines specifically designed to wrap and seal individual boxes for packaging and storage. Usually, the box shrink wrapping machine wraps the plastic shrink film evenly on the boxes and controlled heat is applied for sealing.
Box shrink wrappers are ideal for packaging industries that needs safe and secure product delivery such as pharmaceutical industries and food industries. Additionally, the machines come in different models and designs, including manual and automatic, making them useful in diverse settings and operations.
· Tunnel Shrink Wrapping Machines
A tunnel shrink wrapping machine is a packaging equipment designed to wrap products by passing them through a heated tunnel.
As the products pass through the heated tunnel, the sealing wires cut the shrink film allowing it to wrap around the products. This seals the products tightly.
These machines are very convenient and efficient as they allow products to be sealed tightly from all angles where heat is applied.
This makes the plastic films securely seal the products, protecting them from any damage, thus very efficient.Tunnel shrink wrappers are ideal for operations that are large-scale and in industries such as food and pharmaceuticals.
· L-Bar Sealers
L-Bar sealers are packaging machines that are used to wrap and seal plastic film securely around L-shaped products.
It first begins by wrapping the plastic film around the L-shaped product it is subjected to. Then the wrapped item is then passed through a channel where heat causes the plastic film to shrink and securely seal the product.
These machines are fast and effective in operations and industries that produce L-shaped products in huge quantities, such as electronics.
· Side Sealing Machine
The side sealing machine is a packaging equipment designed and used to seal products of varying lengths on one side only.
These machines, through a conveyor belt, pass the products to the area where plastic film is wrapped, heated, and sealed on one side. Remember, side sealing machines make the packaging process very autonomous, fast, and flexible, ideal for professional operations that require faster product output.
Side sealing machines are best used in industries like the printing industry, which requires professional flexibility and consistency.
Benefits of Shrink Wrap Machine
Shrink wrap machines have several benefits, and some of those benefits include;
- Product Protection – Shrink wraps are used to tightly seal products, securing them from damage and external factors such as dust, facilitating transit and storage.
- Tamper Evidence –Once products are sealed, they cannot easily be opened and tampered with, and once opened, it can be easily known.
- Professional Appearance –Sealed products are always clean and tidy and offer neat presentations, making them ideal for professional appearances.
- Space Efficiency –The amount of space already packaged products occupy after wrapping and sealing is smaller and way less compared to unpackaged products.
- Versatility –Shrink wrap machines are made to function and work on different products of diverse nature, shapes and sizes.
- Cost-Effective –Shrink wrapping machines are mostly automated and this function saves on labor costs making it cost-effective.
- Increased Shelf Life –In food industries, the shrink wrap machine is widely used on perishable products as the wrap makes those items last longer.
- Custom Branding Options –The shrink-wrapping machines enable operators to easily customize their branding options on the shrink films used, as the systems used are advanced.
Key Applications
Here, we are going to narrow down and look at the key applications of the shrink wrap machine in different sectors and industries.
Food Industry
- Wrapping machines are used in the packaging of perishables such as meat, fruits, and yogurts.
- Shrink wrap machines are used for packaging and bundling racks of drinks and beverages, canned foods for retail and transit.
- Wrap films prevent the food products and items from being tampered with, ensuring hygiene and safety.
- Wrapped food products have an extended life span as they are fully protected from elements that can cause damage.
Logistics Industry
- Wrapping films secure different loads for storage and transport to retailers.
- Wrapping films offer protection of products from external elements such as dirt and dust while being stored or transported.
- Wrapping products and packaging them together optimizes the proper usage of available space for storage.
- Wrapping makes and ensures that product handling is easily done , especially for smaller products packaged together.
Pharmaceutical Industry
- Wrapping ensures that the pharmaceutical products sealed cannot be tampered with.
- By wrapping and sealing, drugs can be easily stacked together when stored under controlled conditions.
- Sealing drugs increases their shelf life and prevents damage by external elements.
- Drugs can easily be labelled and serialized in accordance with their specifications and usage.
Banking Industry
- Shrink wrap machines are used to securely bundle stacks of cash for transit and storage.
- Shrink wrap machines are used to wrap the shrink film around and seal sensitive documents that can easily be damaged
- Wrapping machines are used in the serialization of different documents and cash in banks.
Conclusion
Shrink wrap machines have proved to be a fundamental necessity in various packaging and processing industries because of their efficiency and flexibility. These are machines that basically ease things up at the processing levels of various products, and thus are vital to have.
FAQs
What are the disadvantages of shrink wrapping?
- Plastic shrink film is non-biodegradable, causing environmental pollution.
- Unchecked temperature fluctuations may damage the products.
- General installation of the machines is costly and expensive.
- If the products are not properly sealed, they may be tampered with during storage.
- Tightly sealed perishable food products may spoil if dampness occurs within.
What are the main parts of shrink wrapping?
- Control panel
- The sealer
- Conveyor belt
- Shrink tunnel
- Cooling fans
- Sealing wires
What is the purpose of a shrink wrap machine?
- The shrink-wrapping machine seals and packages products securely by wrapping a shrink film around them upon heat application.
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