Linerboard is a crucial component in the production of corrugated board. It serves as the liner, providing strength and stability to the boxes we use for packaging and shipping. With a typical basis weight range of 125-350 g/m2, linerboard is available in various grades to suit different needs.

One of the key characteristics of linerboard is its two-ply structure, consisting of top and base plies. This design enhances the overall durability and performance of the material. The top ply is responsible for providing a smooth surface and excellent printability, while the base ply adds strength and rigidity. This combination ensures that the linerboard can withstand the rigors of transportation and handling.

Linerboard is manufactured using different types of raw materials. Virgin fibers, primarily sourced from softwood, are commonly used in linerboard production. However, in some cases, hardwood or sawdust pulp may also be utilized. The choice of raw material depends on factors such as cost, availability, and desired properties of the final product.

In addition to virgin fibers, linerboard can also be manufactured using recycled fiber. This is an environmentally friendly option that helps reduce the strain on natural resources. Recycled linerboard typically contains a mix of post-consumer waste, such as old corrugated containers, and pre-consumer waste, such as trimmings from the manufacturing process. By utilizing recycled fiber, linerboard manufacturers contribute to the circular economy and promote sustainability.

When selecting linerboard, it is essential to consider the specific requirements of the packaging application. The basis weight, or grammage, of the linerboard plays a significant role in determining its strength and stiffness. While the typical range for linerboard is 125-350 g/m2, smaller boxes may require basis weights below 100 g/m2. It is crucial to choose a linerboard that can withstand the intended contents, handling, and transportation conditions.

Moreover, the choice of linerboard grade is crucial, as it determines the overall performance and characteristics of the packaging. Various grades are available on the market, each tailored to meet specific industry needs. For example, linerboard grades can differ in terms of surface smoothness, moisture resistance, and printability. By selecting the appropriate grade, businesses can ensure that their packaging not only protects the product but also enhances its presentation and branding.

In conclusion, linerboard is a vital component in the production of corrugated board. It provides the necessary strength and stability to packaging, allowing for safe transportation and handling of goods. With options ranging from virgin fibers to recycled materials, linerboard manufacturers offer a variety of choices to meet diverse industry requirements. By selecting the right basis weight and grade, businesses can ensure that their packaging not only meets functional needs but also aligns with their sustainability goals.