What is WTL in Packaging Industry

Introduction

Corrugated cardboard is commonly used in industrial packaging. Typically, it's in a brown kraft color and is used for rough, basic packaging boxes. But how can corrugated cardboard be used for more premium, visually appealing packaging? The answer is to add a layer of white top linerboard, which allows for better printing and more attractive designs. If you're not familiar with white top linerboard (WTL), keep reading!

What is WTL?

Corrugated cardboard consists of three parts: the base paper, the corrugated medium, and the WTL (White Top Linerboard). WTL also can be called coated kraft board. WTL is essentially kraft paper coated with a layer of bleached wood pulp. This coating makes the paper smoother and more suitable for high-quality printing. Compared to regular kraft paper, WTL feels a bit rougher, but it’s perfect for creating a premium look on packaging. The common gram of white top linerboard is 110gsm to 235gsm.

What can you do with WTL？

White Top Linerboard for Corrugated Boxes

One of the most common uses for WTL is as the outer layer of corrugated boxes. The white surface is ideal for high-quality printing, which makes it perfect for showcasing a brand's logo and other details. This type of packaging is often used for premium products like electronics, home appliances, and cosmetics. WTL is also used in food packaging, including boxes for fruits, vegetables, mooncakes, and wine. Additionally, with the rise of e-commerce, WTL corrugated boxes are commonly used for branded packaging and logistics.

Color-Printed Carton Boxes

WTL corrugated boxes offer a higher-end look compared to regular brown kraft boxes. The bleached wood pulp coating enhances color printing, making brand logos and designs stand out with greater visual impact. As a result, WTL packaging is often used for high-end fruit boxes, seasonal promotions, and beauty or skincare gift boxes, helping brands increase their presence and appeal.

Folding Cartons

While kraft paper is more commonly used for corrugated board, WTL kraft paper is also used for making folding cartons with stronger structural integrity. These boxes are often used for packaging batteries, small electronic accessories, soaps, and toothpaste. Because WTL is durable and tear-resistant, it’s also ideal for creating packaging for toys and pet products.

Conclusion

As consumer expectations for packaging quality rise, it’s important to choose high-quality materials for your packaging. People are less likely to trust a premium product in a damaged or low-quality box. If you're looking to create high-quality packaging for your products, you need to start with top-grade white top linerboard. At Golden Paper, we've been producing high-quality paper for over 20 years, with extensive experience in the industry. Feel free to reach out to us for any packaging needs!