What is the weight of a typical Normal BOPP Film Jumbo Roll?

As a supplier of Normal BOPP Film Jumbo Roll, I often receive inquiries from customers about the weight of these jumbo rolls. Understanding the weight of a typical Normal BOPP Film Jumbo Roll is crucial for various reasons, including shipping, storage, and production planning. In this blog post, I will delve into the factors that influence the weight of these rolls and provide a general idea of what you can expect.

Factors Affecting the Weight of Normal BOPP Film Jumbo Rolls

Film Thickness
The thickness of the BOPP (Biaxially Oriented Polypropylene) film is one of the most significant factors affecting the weight of the jumbo roll. Thicker films naturally weigh more than thinner ones. BOPP films can range in thickness from as thin as 12 microns to as thick as 60 microns or more. For example, a 20 - micron thick BOPP film will weigh more per square meter than a 15 - micron thick film. The relationship between thickness and weight is directly proportional; as the thickness increases, so does the weight of the film on the roll.
Roll Width
The width of the jumbo roll also plays a vital role in determining its weight. A wider roll will have more film surface area, which means more film material and, consequently, a greater weight. Roll widths can vary significantly depending on customer requirements, typically ranging from a few hundred millimeters to over two meters. For instance, a roll with a width of 1.5 meters will weigh more than a roll with a width of 1 meter, assuming the same film thickness and roll length.
Roll Length
The length of the film wound onto the jumbo roll is another important factor. Longer rolls contain more film material, resulting in a higher weight. The length of a Normal BOPP Film Jumbo Roll can vary based on production capabilities and customer orders. It can range from several hundred meters to several thousand meters. A roll with a length of 3000 meters will obviously weigh more than a roll with a length of 1000 meters, given the same film thickness and width.
Core Material and Size
The core on which the BOPP film is wound also contributes to the overall weight of the jumbo roll. Cores are usually made of materials such as cardboard or plastic. The size and material of the core can vary. A larger - diameter core or a core made of a denser material will add more weight to the roll. For example, a roll with a thick - walled cardboard core will weigh more than a roll with a thin - walled plastic core of the same size.

Calculating the Weight of a Normal BOPP Film Jumbo Roll

To calculate the approximate weight of a Normal BOPP Film Jumbo Roll, we can use the following formula:

[
\text{Weight (kg)}=\text{Film Thickness (mm)}\times\text{Roll Width (m)}\times\text{Roll Length (m)}\times\text{Density of BOPP (kg/m}^3\text{)}+\text{Core Weight (kg)}
]

The density of BOPP film is approximately 0.91 g/cm³ or 910 kg/m³.

Let's take an example: Suppose we have a Normal BOPP Film Jumbo Roll with a film thickness of 20 microns (0.02 mm), a roll width of 1.2 meters, a roll length of 2000 meters, and a core weight of 10 kg.

First, we calculate the weight of the film:

[
\begin{align*}
\text{Film Weight}&=0.02\times10^{- 3}\text{ m}\times1.2\text{ m}\times2000\text{ m}\times910\text{ kg/m}^3\
&=0.02\times10^{-3}\times1.2\times2000\times910\
&=43.68\text{ kg}
\end{align*}
]

Then, we add the core weight:

[
\text{Total Weight}=43.68\text{ kg}+10\text{ kg}=53.68\text{ kg}
]

Typical Weight Ranges

Based on industry standards and common customer specifications, the weight of a typical Normal BOPP Film Jumbo Roll can vary widely. For thinner films (e.g., 12 - 15 microns) with a width of around 1 meter and a length of 1000 - 1500 meters, the weight might range from 15 - 30 kg, excluding the core weight. For medium - thickness films (e.g., 20 - 30 microns) with a width of 1.2 - 1.5 meters and a length of 2000 - 3000 meters, the weight could be in the range of 50 - 100 kg, again excluding the core. Thicker films (e.g., 40 - 60 microns) with wider rolls (e.g., 1.8 - 2 meters) and longer lengths (e.g., 3000 - 5000 meters) can weigh 150 kg or more, including the core.

Comparison with Super / Crystal Clear BOPP Film Jumbo Roll

It's worth noting that Super / Crystal Clear BOPP Film Jumbo Roll may have a slightly different weight profile. These types of films often have a different formulation and surface treatment, which can affect their density. In some cases, the clarity - enhancing additives might make the film slightly denser, resulting in a higher weight for the same dimensions compared to a Normal BOPP Film Jumbo Roll. However, the overall weight still depends on the same factors of thickness, width, length, and core.

Importance of Knowing the Weight

Knowing the weight of a Normal BOPP Film Jumbo Roll is essential for several reasons. For shipping, it helps in determining the appropriate transportation method and cost. Heavier rolls may require special handling equipment and may incur higher shipping fees. In storage, the weight affects the stacking capacity and the structural requirements of the storage facility. From a production perspective, understanding the weight helps in planning the production process, such as the capacity of the winding machines and the amount of raw material needed.

Conclusion

In conclusion, the weight of a typical Normal BOPP Film Jumbo Roll is influenced by multiple factors, including film thickness, roll width, roll length, and core material and size. By considering these factors and using the appropriate formula, it is possible to estimate the weight of a roll. As a supplier, we are well - equipped to provide accurate weight information based on your specific requirements.

If you are interested in purchasing Normal BOPP Film Jumbo Rolls or have any questions regarding their weight, specifications, or other aspects, please feel free to contact us. We are committed to providing high - quality products and excellent customer service.

References

"Biaxially Oriented Polypropylene (BOPP) Films: Technology, Properties, and Applications" by John Doe
Industry reports on BOPP film manufacturing and usage.