Normal Clear BOPP Packing Tape is a widely used product in the packaging industry. As a supplier of this tape, I am often asked about its performance in various environmental conditions, especially in hot temperatures. In this blog post, I will delve into how Normal Clear BOPP Packing Tape behaves under high - heat scenarios, exploring its properties, potential challenges, and some practical tips.
Properties of Normal Clear BOPP Packing Tape
Normal Clear BOPP Packing Tape is made of Biaxially Oriented Polypropylene (BOPP) film, which is known for its clarity, strength, and flexibility. The tape usually has an adhesive layer on one side, which can be of different types such as solvent - based acrylic adhesives or hot melt adhesives.
The Solvent - based Acrylic Packaging Tape is popular for its good adhesion on a wide range of surfaces. It can bond well to cardboard, plastic, and metal, providing reliable sealing for packages. On the other hand, Hot Melt Adhesive Tape offers quick setting times and is often used in high - speed packaging operations.
Performance in Hot Temperatures
Adhesive Behavior
One of the most critical aspects to consider is how the adhesive on the tape performs in hot temperatures. When exposed to high heat, the adhesive of Normal Clear BOPP Packing Tape may undergo some changes.
Solvent - based acrylic adhesives can become softer in hot conditions. As the temperature rises, the viscosity of the adhesive decreases, which in theory can enhance the wetting process and improve the initial adhesion. However, if the temperature is too high, say above 60°C (140°F), the adhesive may start to flow excessively. This can lead to a phenomenon called "bleeding" or "oozing," where the adhesive seeps out from the edges of the tape. Not only does this look unappealing, but it can also cause the tape to stick to other objects in the vicinity, creating a messy situation.
Hot melt adhesives also respond to heat. They are designed to melt at specific temperatures for application during manufacturing. In hot environments, they may become more fluid than normal. If the heat is extreme, the adhesive might lose its ability to hold the bond firmly. For example, in a warehouse where the temperature soars during the summer months, packages sealed with hot melt - adhesive BOPP tapes may experience a loosening of the seal over time.
Tape Film Appearance and Integrity
The BOPP film itself is relatively stable within a certain temperature range. However, in extremely high heat, the film can start to show some signs of degradation. The clear appearance of the tape may become hazy or distorted. This is because the high temperature can cause the molecular structure of the BOPP film to change slightly.
In addition, the mechanical strength of the tape can be affected. The BOPP film may become more brittle or lose some of its tensile strength. This means that the tape is more likely to break or tear when subjected to normal handling forces, such as when opening a package or moving a box.
Factors Affecting Performance
Duration of Exposure
The length of time the tape is exposed to high temperatures is a crucial factor. A short - term exposure to high heat, such as a package being left in a hot delivery truck for a few hours, may not cause significant damage to the tape. However, if the tape is exposed to hot temperatures for an extended period, say several days or weeks in a hot storage facility, the adhesive and the film are more likely to experience severe changes.
Temperature Intensity
The actual temperature level also plays a vital role. Mildly elevated temperatures, around 30 - 40°C (86 - 104°F), may not have a major impact on the tape's performance. But as the temperature climbs above 50°C (122°F), the risk of adhesive problems and film degradation increases significantly.
Surface Material
The surface to which the tape is applied can also affect its performance in hot temperatures. For example, if the tape is applied to a plastic surface that expands or contracts more than the tape in response to heat, it can create stress on the adhesive bond. This can lead to premature failure of the seal, even if the tape and adhesive are otherwise stable at the given temperature.
Mitigation Strategies
Choose the Right Adhesive
If you know that your packages will be exposed to hot temperatures, it's important to choose the right type of adhesive. Some adhesives are formulated to be more heat - resistant. For example, there are high - temperature - resistant solvent - based acrylic adhesives that can maintain their properties at higher temperatures.
Use Insulation
When shipping or storing packages in hot environments, consider using insulation materials. This can help to keep the internal temperature of the package lower, reducing the stress on the tape. For example, you can use bubble wrap or foam inserts inside the box.
Quality Control
As a supplier, we conduct strict quality control on our Normal Clear BOPP Packing Tape. We test the tape under different temperature conditions to ensure that it meets the required standards. By choosing a reliable supplier, you can be more confident in the performance of the tape in hot temperatures.
Our Factory and Product Assurance
We are a Crystal Clear BOPP Packing Tape Factory dedicated to producing high - quality Normal Clear BOPP Packing Tape. Our products are rigorously tested in various environmental conditions, including hot temperatures. We use advanced manufacturing techniques and high - quality raw materials to ensure the best performance of our tapes.
Contact for Purchase and Discussion
If you are involved in the packaging industry and need high - quality Normal Clear BOPP Packing Tape that can perform well in hot temperatures, we are here to help. Whether you have questions about our products, need samples for testing, or are interested in large - scale procurement, feel free to contact us. We can provide you with detailed product information and customized solutions based on your specific requirements.
References
- ASTM International. Standard Test Methods for Pressure - Sensitive Tape Performance Properties. ASTM D3330/D3330M - 17.
- TAPECOLOGY 101: How Tape Works in Different Environments. Pressure Sensitive Tape Council.
- Properties and Applications of Biaxially Oriented Polypropylene (BOPP) Films. Polymer Reviews.
