GTM-PLN7MRTS
top of page
Search

Unveiling the Impact of Kraft Liners and Duplex Boards on India’s Corrugated Box Manufacturing

  • Aug 14, 2025
  • 3 min read

The corrugated box industry in India is not just crucial for packaging; it represents a significant driver of economic activity. It supports sectors ranging from food and beverages to electronics and textiles. Central to this industry are key materials: kraft liners, test liners, and coated duplex boards. Grasping the importance of these materials is essential for anyone interested in the packaging landscape in India.


The Importance of Kraft Liners


Kraft liners form the outer layer of corrugated boxes, crafted from high-quality virgin or recycled paper. Known for their impressive strength and durability, these liners provide essential protection for goods during both transportation and storage. The kraft process utilizes wood pulp, resulting in paper that not only stands up to pressure but also has excellent printability.


For instance, kraft liners are particularly suitable for industries that ship heavy or fragile products. A study has shown that using kraft liners can reduce product damage rates by up to 20%, making them a smart choice for packaging. Additionally, the distinct brown hue of kraft paper appeals to eco-conscious consumers, complementing the surge in demand for sustainable packaging solutions.


Close-up view of kraft liner sheets stacked for production
Kraft liner sheets ready for box manufacturing

Understanding Test Liners


Test liners are used as the inner layer of corrugated boxes, and they are typically made from recycled paper. While they may not match the strength of kraft liners, test liners are a cost-effective alternative that offers substantial performance for various applications.


Their affordability makes test liners an attractive option for companies looking to optimize expenses. For example, a manufacturer that ships lighter consumer goods might opt for a box made primarily from test liners, which can effectively reduce packaging costs by around 15%. Combining kraft liners and test liners ensures a balance between strength and savings.


Eye-level view of test liner rolls in a warehouse
Test liner rolls stored in a packaging facility

The Role of Coated Duplex Boards


Coated duplex boards are essential in the corrugated box production arena. They are made from two layers of paper with an added coating that boosts their print quality and visual appeal. This makes them particularly useful for products that demand an eye-catching presentation, such as retail items and consumer goods.


The coating not only enhances the appearance but also offers moisture resistance, which is vital for products susceptible to humidity. According to market research, incorporating coated duplex boards can increase sales by as much as 10%, as packaging plays a crucial role in consumer purchasing decisions. Their versatility allows brands to stand out on store shelves.


The Manufacturing Process


Creating corrugated boxes involves several detailed steps, beginning with sourcing the raw materials like kraft liners, test liners, and duplex boards. Once procured, these materials are processed into sheets and rolls. These rolls are then fed into corrugating machines to form the fluted layer that provides strength and rigidity.


After completing the fluting, the kraft liners and test liners are glued to this fluted layer, resulting in a combined sheet of corrugated board. This board is precisely cut and shaped into boxes that meet specific customer requirements. The final phase often includes printing and finishing, where coated duplex boards may enhance the box’s visual appeal.


High angle view of a corrugated box production line
Corrugated box production line in action

Sustainability in the Box Industry


As awareness of environmental concerns increases, the corrugated box industry is adapting by incorporating recycled materials into their production processes. Both kraft liners and test liners can utilize recycled paper, reducing the ecological footprint associated with box manufacturing. Furthermore, these materials are biodegradable, aligning with global initiatives to combat plastic waste.


Manufacturers are focusing on sustainable practices, driven by regulatory demands and the preferences of eco-conscious consumers. Reports indicate that companies prioritizing sustainability can see a brand loyalty increase of up to 25%, making this a strategic move for long-term success in the corrugated packaging market.


The Future of Corrugated Packaging


Kraft liners, test liners, and coated duplex boards are integral to the corrugated box manufacturing process in India. Each material serves a unique purpose, contributing to the overall strength, cost-effectiveness, and visual appeal of the final product. As the industry evolves, a strong focus on sustainability and innovation will shape the future of packaging solutions.


Understanding these materials and their specific uses is crucial for businesses aiming to enhance their packaging strategies. By tapping into the strengths of kraft liners, test liners, and duplex boards, manufacturers can create high-quality, sustainable packaging that satisfies customer demands. The corrugated box sector in India is about more than simple packaging; it’s about delivering effective solutions that protect products while being mindful of environmental impacts.

 
 
 

Comments


bottom of page