What is the bursting strength of c1s food grade cardboard?

Oct 21, 2025

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As a supplier of C1S food grade cardboard, I often encounter questions from customers about the bursting strength of this product. Bursting strength is a crucial property, especially when it comes to food packaging, as it determines the cardboard's ability to withstand pressure without rupturing. In this blog, I'll delve into what bursting strength is, why it matters for C1S food grade cardboard, and how it impacts the quality and performance of our products.

Understanding Bursting Strength

Bursting strength refers to the maximum pressure that a material can withstand before it ruptures or bursts. In the context of C1S (Coated One Side) food grade cardboard, it measures the force required to break through the cardboard when pressure is applied uniformly over a small area. This property is typically measured in pounds per square inch (psi) or kilopascals (kPa).

The bursting strength of cardboard is influenced by several factors, including the type of fibers used, the thickness of the cardboard, and the manufacturing process. For C1S food grade cardboard, which is designed for contact with food, the quality of the raw materials and the strict manufacturing standards play a significant role in determining its bursting strength.

Why Bursting Strength Matters for C1S Food Grade Cardboard

In the food packaging industry, the bursting strength of cardboard is of utmost importance. Here are some key reasons why:

Product Protection

Food products need to be protected from damage during storage and transportation. C1S food grade cardboard with high bursting strength can withstand the pressure exerted by stacking, handling, and external forces, ensuring that the food inside remains intact and safe. For example, when packaging heavy or bulky food items, such as cans or bottles, a cardboard box with sufficient bursting strength can prevent the box from collapsing or bursting open, protecting the contents from damage.

Safety and Hygiene

Food grade cardboard must meet strict safety and hygiene standards. A cardboard box with low bursting strength is more likely to tear or break, exposing the food to contaminants and potential damage. By using C1S food grade cardboard with high bursting strength, we can ensure that the food remains protected and meets the required safety and hygiene standards.

Brand Image

The quality of the packaging reflects the brand image of the food product. A well-designed and sturdy cardboard box with high bursting strength gives the impression of a high-quality product. Customers are more likely to trust and purchase a food product that is packaged in a durable and reliable cardboard box.

Measuring the Bursting Strength of C1S Food Grade Cardboard

The bursting strength of C1S food grade cardboard is typically measured using a bursting strength tester. This device applies pressure to a small area of the cardboard until it ruptures, and the maximum pressure is recorded as the bursting strength. The test is conducted according to international standards, such as ASTM D3786 or ISO 2759, to ensure accurate and consistent results.

When selecting C1S food grade cardboard, it's important to consider the specific requirements of the food product and the packaging application. Different food products may require different levels of bursting strength, depending on their weight, size, and fragility. For example, a lightweight food item, such as a box of cereal, may require a lower bursting strength compared to a heavy food item, such as a case of canned goods.

Our C1S Food Grade Cardboard Products

At our company, we offer a range of C1S food grade cardboard products with different bursting strengths to meet the diverse needs of our customers. Our products are made from high-quality raw materials and manufactured using advanced technology and strict quality control measures to ensure consistent and reliable performance.

One of our popular products is the JINGFENG C1S Food Grade Cardboard Use To Cup. This cardboard is specifically designed for making food cups and has excellent bursting strength and stiffness. It provides a reliable and hygienic packaging solution for hot and cold beverages, as well as food items.

Another product is the One Sided Coated Food Grade Cardboard Sheet. This sheet is coated on one side to provide a smooth and printable surface, while the other side is left uncoated for better adhesion. It has high bursting strength and is suitable for a variety of food packaging applications, such as boxes, trays, and sleeves.

C1S Food Grade Cardboard SheetOne Sided Coated Food Grade Cardboard Sheet

We also offer C1S Food Grade Cardboard Sheet in different thicknesses and sizes to meet the specific requirements of our customers. Our sheets are made from virgin fibers and are free from contaminants, ensuring the safety and hygiene of the food product.

Conclusion

The bursting strength of C1S food grade cardboard is a critical property that determines its performance and suitability for food packaging applications. By understanding the importance of bursting strength and choosing the right C1S food grade cardboard product, food manufacturers can ensure the protection, safety, and quality of their products.

If you're interested in learning more about our C1S food grade cardboard products or have any questions about bursting strength, please feel free to contact us. We'll be happy to assist you with your packaging needs and provide you with the best solutions.

References

  • ASTM D3786 - Standard Test Method for Bursting Strength of Paper and Paperboard (Constant-Rate-of-Elongation Apparatus)
  • ISO 2759 - Paperboard - Determination of bursting strength