What is the gas - barrier property of the packing material used by a strip packing machine for candy?

Hey there! As a supplier of Strip Packing Machine for Candy, I've been getting a lot of questions about the gas-barrier property of the packing material used in our machines. So, I thought I'd write a blog post to shed some light on this important topic.

First off, let's talk about why gas-barrier properties matter when it comes to candy packaging. Candy, especially those with fillings or chocolates, is highly susceptible to damage from oxygen, moisture, and other gases in the air. Oxygen can cause the candy to oxidize, leading to a change in taste, color, and texture. Moisture can make the candy sticky or cause it to lose its crunch. And other gases, like carbon dioxide, can affect the freshness and shelf life of the candy.

That's where the gas-barrier property of the packing material comes in. A good gas-barrier material can prevent these gases from entering the package, thus protecting the candy inside. It acts as a shield, keeping the candy fresh, flavorful, and in good condition for as long as possible.

Now, let's take a look at the different types of packing materials commonly used in strip packing machines for candy and their gas-barrier properties.

1. Polyethylene Terephthalate (PET)

PET is a popular choice for candy packaging due to its clarity, strength, and good gas-barrier properties. It has a relatively low permeability to oxygen and carbon dioxide, which helps to keep the candy fresh. PET is also resistant to moisture, making it suitable for candies that are sensitive to humidity.

However, PET's gas-barrier properties are not as good as some other materials. For high-end or long-shelf-life candies, additional layers or coatings may be required to enhance its gas-barrier performance.

2. Polyvinylidene Chloride (PVDC)

PVDC is known for its excellent gas-barrier properties. It has an extremely low permeability to oxygen, carbon dioxide, and moisture, making it one of the best materials for protecting candy from gas-related damage. PVDC can significantly extend the shelf life of candy, especially those that are prone to oxidation or moisture absorption.

One drawback of PVDC is that it is not as environmentally friendly as some other materials. It is a type of plastic that can be difficult to recycle, and there are concerns about its potential impact on the environment.

3. Aluminum Foil

Aluminum foil is another material with outstanding gas-barrier properties. It is completely impermeable to oxygen, moisture, light, and other gases, providing the ultimate protection for candy. Foil is often used in combination with other materials, such as PET or paper, to create a multi-layered packaging structure.

The main advantage of aluminum foil is its excellent barrier performance. However, it is also relatively expensive and not as flexible as some other materials. Additionally, foil can be difficult to print on, which may limit its use in some applications.

4. Biodegradable and Compostable Materials

With the growing concern for the environment, there has been an increasing demand for biodegradable and compostable packing materials. These materials are made from renewable resources, such as plant-based polymers, and can break down naturally over time.

While some biodegradable materials have good gas-barrier properties, others may not be as effective as traditional plastics. For example, some plant-based polymers may have a higher permeability to oxygen and moisture, which can reduce the shelf life of the candy. However, ongoing research and development are focused on improving the gas-barrier performance of biodegradable materials.

Factors Affecting Gas-Barrier Properties

In addition to the type of material, several other factors can affect the gas-barrier properties of the packing material used in strip packing machines for candy.

1. Thickness

The thickness of the packing material plays a crucial role in its gas-barrier performance. Generally, thicker materials have better gas-barrier properties than thinner ones. However, increasing the thickness also increases the cost and weight of the package, so a balance needs to be struck between gas-barrier performance and cost.

2. Temperature and Humidity

Temperature and humidity can have a significant impact on the gas-barrier properties of the packing material. Higher temperatures and humidity levels can increase the permeability of the material, allowing more gases to pass through. Therefore, it is important to store and transport the candy in a controlled environment to maintain the integrity of the packaging.

3. Seal Quality

The quality of the seal between the layers of the packing material is also important. A poor seal can create gaps or leaks, allowing gases to enter the package. Strip packing machines are designed to create a tight and secure seal, but proper maintenance and calibration of the machine are essential to ensure consistent seal quality.

How We Ensure Good Gas-Barrier Properties in Our Strip Packing Machines

As a supplier of Strip Packing Machine for Candy, we understand the importance of gas-barrier properties in candy packaging. That's why we take several steps to ensure that our machines can produce packages with excellent gas-barrier performance.

1. Material Selection

We work closely with our customers to select the most suitable packing material for their specific candy products. We consider factors such as the type of candy, its shelf life requirements, and environmental concerns when making recommendations. Our goal is to provide a packaging solution that offers the best balance between gas-barrier performance, cost, and sustainability.

2. Machine Design and Calibration

Our strip packing machines are designed to create a tight and secure seal, which is essential for maintaining the gas-barrier properties of the package. We use advanced sealing technology and precision engineering to ensure that the seal is consistent and reliable. Additionally, we regularly calibrate our machines to ensure that they are operating at optimal performance.

3. Quality Control

We have a rigorous quality control process in place to ensure that every package produced by our machines meets our high standards. We conduct regular inspections and tests to check the gas-barrier properties of the packages, as well as other quality parameters such as seal strength and package integrity. Any packages that do not meet our standards are rejected and reworked.

Conclusion

The gas-barrier property of the packing material used in strip packing machines for candy is a critical factor in ensuring the freshness, flavor, and shelf life of the candy. By choosing the right packing material and using a high-quality strip packing machine, you can protect your candy from gas-related damage and provide your customers with a product that looks and tastes great.

If you're in the market for a Strip Packing Machine for Candy, or if you have any questions about gas-barrier properties or candy packaging in general, don't hesitate to get in touch with us. We'd be happy to discuss your specific needs and provide you with a customized solution.

We also offer Medicine Strip Packaging Machine and Tablet Strip Packing Machine for those in the pharmaceutical industry. Our machines are designed to meet the highest standards of quality and performance, and we can provide you with the support and expertise you need to succeed.

Let's work together to create the perfect packaging solution for your products!

References

• "Packaging Materials and Their Properties" by James M. Hanlon, Frederick W. Gunderson, and William J. Kelsey
• "Food Packaging: Principles and Practice" by Tara H. McHugh and Anne-Marie A. Roos
• "Gas Barrier Polymers for Packaging Applications" by L. H. Garcia and M. A. Gomez-Estaca