What is shrink film?
Shrink film is a highly versatile packaging material that is widely used in the manufacturing and packaging industries. It is a plastic film that shrinks when heated and can be wrapped tightly around products to form a protective barrier. Shrink film is commonly used to bundle items such as bottles, cans, and boxes, or to completely wrap and protect equipment, electronics, and other products from moisture, dust, or damage during shipping and handling.
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What are the raw materials used in shrink film?
Shrink films can be made from different materials, including polyolefin (POF) and polyvinyl chloride (PVC), which have different performance characteristics and therefore different environmental impacts. The purpose of this paper is to provide an overview of the two main types of shrink wrap, polyolefin and PVC, their properties, and their environmental impact. In addition, the recycling process for these films will be discussed, as well as the potential for other recyclable shrink films.
A Comparison of Recycled Polyolefin Shrink Film and PVC Shrink Film: Advantages and Benefits
FeaturesRecycled Polyolefin Shrink FilmPVC Shrink FilmEnvironmental friendlinessRecyclable, free of hazardous materialsContains hazardous materials, difficult to decomposeSafetyNon-toxic, does not release harmful gases when heatedContains chlorine gas, and releases harmful gases when heatedDurabilityTear-resistant, impact-resistant, moisture-proof, waterproofEasily torn, prone to damagePackaging effectHigh transparency and flexibilityColorful but lower transparencyCost-effectivenessRelatively lowRelatively high
Recycled Polyolefin Shrink Film has more advantages and benefits compared to PVC Shrink Film. Recycled Polyolefin Shrink Film is a more environmentally friendly, safer, more durable, and better packaging solution with lower costs. Meanwhile, PVC Shrink Film contains hazardous materials and is prone to cause environmental pollution. Therefore, Recycled Polyolefin Shrink Film is a better substitute and an important direction for sustainable packaging in the future.
Polyolefin shrink film (POF shrink film)
Polyolefin (POF) is a plastic polymer made from petroleum, natural gas, or other hydrocarbon sources. It is a widely used shrink film material because of its excellent sealing and shrinking properties, flexibility, and high transparency. polyolefin heat shrink film manufacturer is available in a variety of forms, including single or multi-layer films, with different thicknesses, transparency, and performance characteristics.
Polyolefin shrink film has a low shrink tension, which means it can wrap products without much force or pressure, and it adapts well to the shape of the product. In addition, polyolefin shrink film has a high puncture and tear resistance, which protects the product from damage during shipping and storage.
Benefits of using recycled shrink film
One of the main benefits of polyolefin shrink film is that it can be recycled. Recyclable polyolefin shrink film can be processed into other forms of plastic, such as bags, traffic cones, or irrigation tubing. As a result, this makes them a more environmentally friendly option than other types of shrink film that are not easily recycled or simply cannot be recycled.
Recycling process
The recycling process involves collecting, grinding, and melting the polyolefin shrink film. First, the collected shrink film is sorted and cleaned to remove any contaminants, such as dust or food residue. The film is then ground into small flakes or pellets that are used as feedstock for the new product. These flakes are then melted, extruded or injection molded into different forms of plastic products.
what applications can biodegradable and recyclable polyolefin shrink film be used for?
Biodegradable and recyclable polyolefin shrink film is usually used for packaging consumer products, such as food, beverage, cosmetics, pharmaceuticals, household products, pizza packaging film,fruit packaging film, egg packaging film, etc. It has high transparency, excellent shrinkage performance, good abrasion, and tear resistance, and can also be recycled in an environmentally friendly manner, so it is widely used in various packaging industries.
colored shrink wrap
Polyvinyl chloride shrink film
Another commonly used plastic film often used for packaging is polyvinyl chloride (PVC) shrink film, a synthetic plastic polymer derived from fossil fuels that have many desirable properties such as flexibility, transparency, and toughness. Because of these properties, PVC shrink film is often chosen for products that require a high degree of visual appeals, such as cosmetics, electronics, and other consumer products.
Characteristics of PVC Shrink Film
Compared to polyolefins, PVC shrink film has a higher shrink tension, which means it requires more heat and pressure to shrink around the product. In addition, PVC shrink film is more rigid, making it more difficult to wrap irregularly shaped products. While it has high clarity and gloss, it is not as strong and durable as polyolefin shrink film, making it more susceptible to tearing or puncturing.
Challenges in recycling PVC shrink film
A major challenge with PVC shrink film is that it is difficult to recycle because of its chemical composition. When PVC is heated, it emits toxic gases that can be harmful to the environment and human health. Therefore, recycling PVC shrink film requires specialized equipment and processes to ensure that these toxic gases are captured and neutralized.
Health and Environmental Concerns
PVC shrink film is known to contain chemicals that are potentially harmful to human health and the environment, including phthalates and lead. Phthalates are added to PVC to improve its flexibility and durability, but they can leach out of the material over time, which can affect hormones or damage organs. Meanwhile, lead is added to PVC as a stabilizer, but it can accumulate in the environment and cause neurological and behavioral problems.
Recyclable Shrink Film
In addition to the two types of shrink film mentioned above, there are other types of recyclable shrink film on the market. Examples include PETG shrink film, which is known for its uniformity, high gloss, and clarity; PLA shrinks film, which is plant-based and biodegradable, although it is not widely accepted by recycling organizations; and bio-PET shrink film, which is made from a blend of plant-based bio-based PET and fossil fuel-based PET.
Comparison of different types of recyclable shrink films
Different types of recyclable shrink films have their own advantages and disadvantages. For example, PETG is a safe material that can be easily recycled, but it is more expensive than other shrink films. PLA shrink film is biodegradable, but requires specialized equipment to recycle and is also more expensive than polyolefin shrinks film. Finally, bio-PET shrink film is not as environmentally friendly as PLA, but it is cheaper and more acceptable.
Why choose biodegradable and recyclable POF to shrink film?
Choosing biodegradable recyclable POF shrink films can reduce environmental pollution because they are made from renewable natural resins or starch, which decompose faster than traditional POF plastic films. In addition, this type of POF film can also be recycled, further reducing environmental pollution because recycling and reusing discarded plastic products can reduce the environmental impact caused by landfills and incineration. Finally, biodegradable and recyclable POF shrink film also offers superior performance and longevity while meeting environmental requirements.
How is shrink film made?
Shrink film is produced through a four-step process.
Step 1: Polypropylene (POF) pellets are placed into an extruder, heated, and melted.
Step 2: The melted polypropylene is extruded through a die to form a thin film.
Step 3: The extruded film is cooled and solidified using cooling rolls or water quenching.
Step 4: The solidified film undergoes stretching and shaping processes to achieve the desired shrinkability and dimensions.
FAQ
Is shrink film recyclable?
Shrink films made from certain materials can be recycled, such as polyethylene (PE) and polypropylene (PP). However, it's important to check with your local recycling facility to see if they accept these types of plastics. PVC shrink film is not widely recyclable and can release toxic chemicals when burned.
Is shrink film eco-friendly?
Shrink film is generally not considered eco-friendly because it is made from plastic, which is derived from non-renewable resources and does not biodegrade easily. However, there are more environmentally-friendly options available, such as bio-based or biodegradable shrink films, that have a lower carbon footprint and reduce plastic waste in the environment.
What is the eco-friendly shrink wrap film?
An eco-friendly shrink wrap film is one that is biodegradable, compostable, or made from renewable resources. These types of shrink films break down naturally in the environment, reducing waste and environmental pollution. Some examples include shrink films made from plant-based materials like PLA or PHA.
Is polyolefin shrink film recyclable?
Polyolefin shrink film, which includes polyethylene and polypropylene, is widely recyclable in many areas. Polyethylene terephthalate glycol (PETG) is another type of shrink film that is recyclable and has a lower carbon footprint than other types of plastics.
Is polyolefin shrink film eco-friendly?
Polyolefin shrink film is considered to be more eco-friendly than other types of shrink films because it is recyclable and does not emit harmful chemicals during production or disposal. However, the impact on the environment depends on the source of the raw materials used to make the product.
Is Shrinky Dink plastic recyclable?
Think back before the arrival of COVID19. Many people were reducing their use of plastic products. Plastic shopping bags, single-use containers, and packaging were all being slowly fazed out.
Shortly after the arrival of the pandemic, however, things changed—the EPA relaxed environmental protections. And then, some states banned reusable bags. In their place, the resurgent single-use plastics.
This move was a complete 180 in plastic consumption trends to that point. Since the pandemic, we’ve seen a big comeback of single-use plastics.
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The packaging industry was no different. There was an initial boost of interest in bio-based shrink films before the arrival of the pandemic. But, after COVID arrived, many companies switched back to traditional plastic films.
You might be thinking that plastics are all bad. But, you might be surprised to learn about the real pros and cons of plastic shrink film. But, which type of film is right for you? Bio-based film or plastic film?
With over six decades in the packaging industry, Industrial Packaging has learned a lot about shrink films. During that time, we have found that sometimes, traditional plastics are actually the better choice. And, sometimes, bio-films would make more sense for specific applications.
This article will take a look at the pros and cons of biodegradable films and plastic films. As a result, you’ll have a better understanding of each product. And, you will be able to make an informed decision about the proper film for your needs.
What Are The Pros And Cons Of Biodegradable Shrink Films?
Pros Of Biodegradable Shrink Films
- Earth-friendly
- Appealing to consumers
- Biodegradable
Biodegradable Shrink Film Is Appealing To Consumers
Many consumers are focused on trying to reduce the harm to our planet earth. As such, biodegradable plastic alternatives are quickly becoming popular in Google searches. Just as it is with other types of bio-based plastic alternatives, bio-films are becoming very popular with consumers and are highly marketable to those seeking "green" options.
Bio-Based Shrink Film Is Earth-Friendly
Bio-polymer-based films like Nature Star are made from plants. Nurel is another brand of biodegradable plant-based film alternative. These products are made from biopolymers. And, they are the earth-friendly "plastics" of the emerging modern world.
Bio-Films Are Biodegradable
These materials have a similar physical texture and aesthetic to traditional plastics. But, they are created from plant-based, biodegradable, and sustainable compounds. These compounds break down naturally into their plant-based byproducts.
This process happens much faster than traditional plastics. Traditional plastics can take over thousand years to break down. And, this results in the presence of micro-plastics in our water sources.
For the environmentally minded, biopolymer-based films may seem like a godsend. Some might even call them a miracle. This cutting-edge technology might be both of those things. But, there are some drawbacks to using these bio-polymer-based film alternatives.
Cons Of Biodegradable Shrink Films
- More expensive than plastic film
- Not tested on many applications yet
- Requires in-home or industrial composting
Bio-Films Are Generally More Expensive Than Traditional Shrink Films
Bio-polymer-based shrink films like those detailed above are few and far between. There are currently only a few brands available. And they can be pricey when compared to traditional plastic films.
Biodegradable Shrink Films Have Not Been Tested Extensively In Real World Applications
These bio-films are not commonly used on many packaging lines the world over (yet). So, these new materials have not been put to the test in many real-world applications. It is unclear if they will be able to offer the same qualities that plastic film provides. Those qualities include strength, clarity, gloss, haze, and other related elements.
Bio-Films Require Home Based Or Industrial Composting
While many people think you can just toss bioplastics and bio-based films on the side of the road or in the woods to decompose, this is not true. To get the ecological benefits from these materials, you need to compost them properly.
That means they must be composted at an industrial composting site or a home-based composting pile. If they are not properly disposed of in one of the ways above, they will not biodegrade properly. Additionally, bio-films are not recyclable. If they are tossed into the recycling, they will be removed and thrown in a landfill.
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What Are The Pros And Cons Of Traditional Plastic Shrink Films?
Pros Of Traditional Plastic Shrink Films
- Easy to source
- Recyclable
- Enhances shelf appeal
- Time tested and approved for many applications
Plastic Shrink Film Is Easier To Source
Plastic shrink films are easy to source. Even with the disruptions in the global supply chain, they are easier to obtain than their biodegradable counterparts.
Plastic films are trusted and well-known packaging materials. These films have stood the test of time. They are currently used on millions of packaging lines worldwide.
Plastic Shrink Films Are Recyclable
There are well-known environmental issues with most flexible packaging plastics. But, they still have significantly less of an ecological impact than the most popular alternatives. This is due to their much lower carbon footprint than many forms of rigid packaging.
When it comes to flexible packaging supplies, plastic films are some of the most environmentally friendly packaging materials currently available.
Unfortunately, many people do not realize that shrink films are entirely recyclable. Depending on the volume of film being recycled, some companies may even be able to make a profit from recycling their used films!
Shrink Film Enhances Shelf Appeal
Wrapping your products in shrink film is an easy way to boost shelf appeal. The glossy and reflective surface of plastic shrink films produces an eye-catching shimmer under store lights. If your products glisten on store shelves and your competitors do not, who do you think the consumer will reach for first?
Cons Of Traditional Plastic Shrink Films
- Complicated to recycle
- Made of plastic (decreasing in popularity with consumers)
- Not suitable for highly heat sensitive products
- Related machinery can be expensive
Plastic Shrink Film Is Complicated To Recycle
Again, while plastic films are recyclable, many people are unaware of this. As a result, they end up in landfills. And, they find their way to waterways, rivers, streams, and eventually, the ocean. In this way, they contribute to a growing problem with ocean plastics.
Plastic Shrink Film Is Not Good For Ultra Heat Sensitive Products
Furthermore, there are some types of products that should not be packaged in shrink film. These products include any product that can not withstand the heat of a shrink tunnel. If your products are very heat sensitive, it is ill-advised to use shrink film to package them.
Plastic Shrink Film Machinery Can Be Expensive
Shrink films are relatively inexpensive materials. But, the machinery required to use them properly is not. The range of investments for shrink tunnels and sealers can range from $10,000 - $100,000.
Do you have the budget or financing capabilities to make such large purchases? If not, shrink film may not make sense for your packaging needs. That being said, you can do small runs of products with a heat gun or table-top shrink tunnel. These types of machinery would cost you significantly less.
Plastics Are Becoming Less Popular With Consumers
Despite the unpopular truth about plastic shrink films, consumers are continually calling upon corporations to discontinue the use of plastic packaging. As consumer demands to ban plastics in an effort to reduce damages to our oceans increases, plastic is becoming less and less appealing over time.
Which Type Of Film Is Right For You?
When trying to decide between bio-films and plastic films, you need to make a few decisions. Some of the questions that you’ll want to ask yourself are:
- Is the type of film you want to use going to be available regularly? Right now, the supply chain is tight. Plastic shrink film made in the USA has the best availability.
- What are you willing to spend on materials in exchange for less of an environmental impact? If you are open to spending more to save the earth, bio-films are your best choice.
- How are your consumers going to react to your choice of material? If your customers are heavily environmentally minded, bio-films are a better choice.
- Can you afford longer lead times? If you answered no, you would want to stick with plastic film.
- Do you have access to a home or industrial compost facility? If you answered no, you would want to stick to plastic film.
Where Can You Learn More About Shrink Film?
Now that you have all the information required to choose between biodegradable shrink film and plastic shrink film, you have another choice to make. Are you going to purchase domestic shrink film or foreign-made shrink film?
Are you curious to know what the difference between these two options is? Would you like to know more about the pros and cons associated with each option? If you would like to learn more, we would suggest that you read Domestic Shrink Film VS Imported Shrink Film: Which Is Right For You?
With the information in the article above, you will be able to figure out which choice makes the most sense for your unique packaging requirements.
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