The Essential Guide to Film Winding for Factory

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When the products are ready in any factory, managers must ensure the safety and integrity of products during storage or transportation. The best way to do this is to use plastic winding films. Film winding is a staple in factories as they are versatile and effective. 

But what exactly is film winding or wind film and why is it so crucial for factory operation? And more specifically, where can you take the best film winding that’s not only high in quality but also sustainable? This guide aims to provide answers to these questions through a comprehensive understanding of film wind, covering everything from its types and material composition to its benefits.

Whether you are a factory manager, an operator, or someone involved in quality control, this article will equip you with the knowledge needed to make informed decisions about the use of winding film in your operations. So without further ado, let’s get into it.

Understanding Winding Films

Winding films – also referred to as stretch film or shrink film – is a type of plastic used to wrap and secure products. Its primary purpose is to protect goods from physical damage, contamination, and environmental factors such as dust or moisture.

Types of Winding Films 

There are different kinds of winding films that are available in the market. Each of them offer unique properties. Therefore, you must understand the difference among them as it will help in selecting the right material for your specific applications. Here is a little introduction for different types of film windings:

  • Stretch Film: It is a highly elastic plastic film wind and is used to wrap items tightly. The elasticity allows the film to stretch and conform to the shape of the product, creating a secure and stable package. This type of film can be ideal for pallet wrapping and ensures that goods remain intact during transit.
  • Shrink Film: Shrink film wind, in contrast, works by shrinking tightly over the product when heat is applied. This film provides a snug fit and is commonly used for packaging individual items or bundling multiple products together. It’s particularly useful for tamper-evident packaging.
  • Blown Film: It is created using a process that involves blowing heated plastic into a bubble and then cooling it. This method gives blown film a high degree of strength and durability, making it suitable for heavy-duty applications. However, blown film tends to be more expensive due to its complex manufacturing process.
  • Cast Film: Cast film is produced using a casting process, where the plastic is extruded through a flat die and then cooled on a chill roll. This results in a film that is smooth, clear, and consistent in thickness. Cast film boasts several advantages that make it a popular choice for many industrial applications.

Material Composition

Winding films are made from various types of plastics, each offering distinct properties and benefits. The most common materials used in manufacturing wind films are Polyethylene (PE), Polyvinyl Chloride (PVC), and Polypropylene (PP). Understanding the differences and applications of each type can help you choose the best material for your specific needs.

Polyethylene (PE)

Polyethylene is the most widely used plastic in the world, and it comes in several forms, with Low-Density Polyethylene (LDPE) and Linear Low-Density Polyethylene (LLDPE) being the most common for winding films.

  • Low-Density Polyethylene (LDPE): LDPE is known for its flexibility, transparency, and resilience. It is commonly used in applications where ease of wrapping and flexibility are important. This material is great for stretch films used to wrap pallets, as it stretches easily without breaking. It is good for pallet wrapping, food packaging, and for bundling lightweight items.
  • Linear Low-Density Polyethylene (LLDPE): LLDPE offers similar benefits to LDPE but with enhanced strength and puncture resistance. It is produced using a different process that makes it more robust, allowing it to handle heavier loads and more rigorous applications.

Polyvinyl Chloride (PVC)

PVC wind film is typically more rigid and durable compared to PE films. It offers excellent clarity, making it ideal for packaging where product visibility is crucial. Additionally, PVC has good shrink properties, making it perfect for shrink wrapping applications.

One thing to note about PVC is that its production and disposal can raise environmental concerns. PVC releases harmful chemicals when burned, so recycling and proper disposal are essential to minimize environmental impact.

Polypropylene (PP)

PP films are stiffer and more heat-resistant compared to PE films. They also have a high melting point, which makes them suitable for applications that require higher temperature resistance. PP is often used in applications where durability and resistance to environmental factors are essential.

There are different types of PP films, including cast polypropylene (CPP) and biaxially oriented polypropylene (BOPP). BOPP films are stretched in both directions, giving them added strength and clarity, while CPP films are known for their excellent sealing properties. BOPP are useful in packaging snacks, tape or labels while CPP are good for food packaging as well as textile packaging.

Why Should a Factory Use Winding Film?

Winding films, also known as shrink films, offer numerous benefits for protecting goods in various industries. Its use goes beyond merely wrapping products as it also ensures safety, cleanliness, and integrity throughout storage and transport. Let’s look at its three main advantages in more detail::

Protection of Goods 

Wind film provides a robust shield against physical damage. When goods are wrapped tightly, they are less likely to move around during transport, reducing the risk of scratches, dents, or breakage. This is especially important for fragile or delicate items.

For example, let’s say your factory has to ship a pallet of glass bottles. If you do not use film winding, then the bottles might collide, shift, and worse – break before they reach the final destination. But with wind films, they are held securely in place and prevent movement and potential damage.

Not just that, winding films also have the ability to prevent contamination. As you might know, products can be exposed to dirt, chemicals, and other contaminants during storage and transport. Especially in the food industry, contamination can lead to severe health risks and costly recalls. But using winding films can ensure cleanliness and safety from external contaminants. 

Winding films can also protect products against moisture and dust. This is particularly useful for electronic components that are vulnerable to moisture and dust. If exposed, they can malfunction or corrode. Therefore, many factory managers prefer to use wind films to protect these sensitive items from environmental hazards.

Stability

One of the main advantages of using winding film is its ability to stabilize loads during transport. But how?

Well, the winding film tightly wraps around the products and binds them together into a single, cohesive unit. This prevents individual items from shifting or moving around. When products are tightly bound, the risk of damage due to jostling or collisions is significantly reduced. Let’s understand this better by considering an example:

Consider a pallet loaded with boxes of canned goods. Without wind film, the cans could shift during transport, causing boxes to tip over or cans to fall out. By wrapping the pallet with winding film, the boxes are held firmly in place, ensuring they remain stable and secure from the warehouse to the retail shelf.

Let’s understand through another example. For this, you will have to think of a stack of fragile ceramic tiles. If the stack shifts even slightly, the tiles could crack or break. Wind film keeps the stack stable, distributing the tension evenly and minimizing the risk of toppling or tilting.

When loading and unloading goods, workers can rely on the stability provided by wind film to handle the pallets more safely. This reduces the risk of accidents caused by shifting loads.

Security

In addition to stabilizing loads, winding film also provides a measure of security by serving as a tamper-evident seal. This is a part in industries where product integrity is crucial, such as food, pharmaceuticals, and electronics.

For example, a pallet of pharmaceutical products is wrapped in cling film before being shipped. If the film is found to be torn or cut upon arrival, it indicates potential tampering, prompting further inspection and ensuring that compromised products do not reach consumers.

The tamper-evident nature of wind film acts as a turn against theft. Potential thieves are less likely to attempt to steal from packages that are securely wrapped and would clearly show any tampering. 

Electronics often attract theft due to their high value. By wrapping electronics in winding film, companies can deter theft, as the intact film reassures that the package has not been tampered with during transport.

Cost Efficiency

Looking at other benefits, you might have assessed that those advantages mean that you will be getting high turn on money or ROI (return on investment) through reduction in product loss. 

In the beginning, it might not seem much. But then, it will show. But how? Well, you might know that product loss during storage and transportation can be a major expense for businesses. Damaged goods often need to be replaced or refunded, leading to direct financial losses. Winding film helps minimize these beginning losses through its protective qualities.

In addition to reducing product loss, winding film helps lower overall packaging turn costs. It’s an efficient beginning material that offers several cost-saving advantages. Winding film is relatively inexpensive compared to other packaging materials. It provides excellent protection at a fraction of the cost of more complex packaging solutions like long distance shipping.

Because winding film can stretch and cover a large area with a minimal amount of material, it’s highly efficient. This means that less wind film is needed to secure a load, leading to savings in material costs.

Moreover, winding film adds minimal weight to the overall package, which can reduce long distance shipping costs. Heavier packaging materials can increase transportation costs, especially for long distance or international shipments.

How to Choose the Right Winding Film for a Factory?

Now that you understand what winding film is and how it can be helpful for your factory, let us help you understand the logistics behind choosing the right winding film for a factory.

Considerations Based on Product Type

Different products have varying needs, and understanding these specific requirements will help you choose the most suitable winding film. Here are the primary considerations:

Weight and Dimensions of the Product

The weight and dimensions (height and width) of your product play a significant role in determining the type and thickness of winding film you need. Heavier and larger items require stronger and more durable wind film to ensure they are adequately secured.

  • Heavier Products: For heavy items, you need a thicker and more robust winding film like wound rolls to handle the weight and prevent tears or punctures. The film should also have excellent stretchability to ensure it can be wrapped tightly around the product without breaking. For example, consider a pallet of construction materials like bricks or cement bags that are quite heavy and need a strong stretch film to secure them properly.
  • Lighter Products: However, for lighter items like lightweight plastic bottles, a thinner film may be sufficient. But, the wind film still needs to provide adequate protection and stability.
  • Large Dimensions or Height/Width: When packaging items with large width like refrigerators or washing machines, a wide wind film can cover the product more effectively. 

Fragility and Handling Requirements

The fragility of your products and how they need to be handled also influence the choice of wind film. Fragile items require extra care and protection to prevent damage. For example, a shipment of glass vases would need a stretch film that can securely hold the items without exerting too much pressure. A softer, more elastic air wind air film, possibly with air pockets or cushioning properties can provide the right balance of security and protection.

If products require special handling or are prone to damage during handling, the winding film must offer extra protection. This might include using additional layers or choosing air film with enhanced puncture resistance. Electronics, for instance, often require careful handling to avoid static and impact damage.

Therefore, as a factory manager, owner, or quality control team member, you must choose the type of stretch film that suits the nature of your product and handling.

Environmental Factors

The storage conditions and the transportation environment can significantly impact the performance of winding air film like wound rolls, and subsequently, the protection of your products. Therefore, the environmental factors must not be neglected.

Temperature Variations

Temperature fluctuations can affect the strength and elasticity of winding film (with solid foundation). It’s important to choose a film that can withstand the temperature range your products will be exposed to.

For products stored in cold air environments, such as food items in refrigeration or freezing, you need a film that remains flexible at low temperature without becoming brittle or cracking. Frozen foods like ice cream or frozen vegetables need a stretch air film that can handle sub-zero temperature point.

Conversely, products stored in hot air environments require a film that can maintain its integrity and resist melting or deforming. Items stored in a warehouse without climate control during the summer might face high temperatures. A UV-resistant or heat-stabilized stretch film can prevent the film from breaking down and ensure the products stay protected.

Humidity and Moisture

Humidity and moisture can weaken the adhesive properties of some air films and lead to mold or mildew growth on products.

In humid environments, choose a film that offers good moisture resistance and maintains its grip even when exposed to damp conditions. Products stored in a coastal warehouse where humidity is high need a moisture-resistant air wind film. 

While less problematic than high humidity, very dry conditions can sometimes cause static build-up, which might be an issue for certain products. Therefore, electronics stored in dry environments can be protected using anti-stretch film to prevent static electricity build-up.

Exposure to Elements

During transportation, products may be exposed to various elements such as sunlight, rain, wind, and dust. Long-term exposure to sunlight can degrade many types of plastic films, making them brittle and less effective. UV-resistant air film is designed to withstand prolonged sunlight exposure without breaking down.

Rain or damp conditions during transport can compromise the integrity of standard films. Moisture-resistant films are essential for ensuring that the products stay dry and protected.

Film Specifications

When selecting a winding film (that has a solid foundation) for packaging and transporting goods, understanding the film specifications is crucial. These specifications, such as thickness (gauge), stretchability, and cling and tack, determine how well the film will perform in protecting and securing your products. Let’s dive into each of these specifications in detail.

Thickness

The thickness of winding film like wound rolls, often measured in gauge (or microns in metric terms), is a key specification that affects its strength and durability. The right thickness ensures that the film can handle the weight and demands of the packaged items.

The choice of thickness depends on the weight and nature of the products being wrapped. Heavier and sharper-edged items need thicker air wrapping film to prevent tearing. for a pallet of lightweight plastic bottles, a 60-80 amount of gauge film might be sufficient to secure the load without adding unnecessary cost. In contrast, a pallet of metal part with sharp edges would benefit from a 120-150 amount of gauge film to avoid punctures and ensure stability.

Note: A higher gauge amount indicates a thicker film. Thicker films are generally stronger and more resistant to tearing and puncturing.

Stretchability

Stretchability refers to the film’s ability to stretch and conform to the shape of the product or pallet amount. This property is critical for ensuring a tight, secure wrap that holds items together during transport.

Films with good stretchability provide better load containment by applying consistent pressure across the load, which helps prevent shifting and movement.

Environmental and Sustainability Considerations

Handling the disposal and recycling of winding film like wound rolls, responsibly is crucial for minimizing its environmental impact. Winding film, like other plastics, can contribute to environmental pollution if not disposed of properly. Ensuring correct disposal methods is essential for reducing this impact.

There are also recycling winding films like wound rolls that not only helps the environment but also can be cost-effective for businesses. Many types of winding film  that have a sustainable and solid foundation are recyclable, provided the amount is clean and free from contaminants.

Biodegradable Films

Biodegradable films break down more quickly in the environment compared to traditional plastics, making them a more sustainable option.

These are often made from plant-based materials or treated with additives that enable them to degrade more rapidly. These air films decompose through exposure to sunlight, moisture, and microbial activity, leaving behind fewer harmful residues.

Where to Buy the Winding Film?

Homestraw is offering different types of cling films or wrapping films that are not only high in quality, but are also biodegradable. These are amazing for the factories who are planning to reduce their carbon footprints on the Earth.

Homestraw is a company that is based on environmental protection values. Therefore, all of the products that we offer (including windling films) are sustainable and made with the environment in mind. We have obtained several quality certificates from FDA, SGS, LFGB, as well as ROHS.

For more details of the winding air film products of Homestraw, you can visit the product page of our website to order. Or you can contact our customer services department for more details.

Conclusion

Winding film plays a crucial role in protecting, stabilizing, and securing products in factories. So if you are a factory manager or owner who is considering purchasing widening films for their factory or just want to know why they are helpful, we hope that this article was helpful for you.

Winding air films can protect your products from physical damage, contamination, moisture, as well as dust. You can also use it to ensure load stabilization during transport. It can also reduce product loss and lower packaging costs by using less material – effectively.


If you are considering this investment, contact Homestraw’s team to order and visit our product page to know more. We have years of experience in the industry and we also focus on sustainability. So let’s connect and protect your products using film winding.

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