In the premium packaging industry, few packaging styles leave a stronger impression than the book-shaped rigid box. Also known as a book-style gift box or magnetic rigid box, this elegant packaging solution features a hardcover-like appearance, a sturdy spine, and a magnetic closure that creates a satisfying opening experience.

Book-shaped rigid boxes are widely used for luxury gifts, cosmetics, jewelry, electronics, wine, and promotional products, where packaging is an important part of the brand experience.

But how is a book-shaped rigid box manufactured? More importantly, how can automation improve production efficiency while maintaining the precision and consistency required by premium brands?

This article walks through every stage of the manufacturing process and explains how modern rigid box making machines help manufacturers build efficient, reliable production lines.

Step 1: Greyboard Preparation

Every rigid box begins with greyboard (chipboard), which provides the strength and structure of the finished product.

The greyboard is first prepared according to the required box dimensions. Depending on the manufacturer’s production method, the boards may be cut in-house using dedicated board cutting equipment or supplied as pre-cut pieces.

Accurate board dimensions are essential because they directly affect the appearance, assembly accuracy, and overall quality of the finished box.

Step 2: Precision Grooving

After the greyboard has been prepared, the next critical process is grooving.

For book-shaped rigid boxes, V-shaped grooves are cut into the greyboard to create clean and accurate folding lines. During grooving, a thin connecting layer of paper is intentionally left intact, allowing the board to fold smoothly without cracking while maintaining excellent structural strength.

The quality of this process determines whether the finished box has sharp, straight edges and a premium appearance.

A professional Greyboard Grooving Machine provides consistent groove depth and positioning, significantly improving both efficiency and product quality compared with manual grooving.

Step 3: Magnet Installation

One of the signature features of a book-shaped rigid box is its magnetic closure.

Before assembly, cavities are prepared at the designated positions for the magnets. The magnets are then inserted into the cavities and secured with adhesive or protective tape. Depending on the box design, the matching component may use either another magnet or a metal plate to create a reliable magnetic closure.

For manufacturers with high production volumes, an Automatic Magnet Pasting Machine can greatly improve placement accuracy, reduce labor requirements, and ensure consistent magnetic alignment throughout production.

Step 4: Making the Book Cover (Case)

The book cover, also known as the case, is one of the most important components of a book-shaped rigid box.

Printed paper is first coated with water-based white glue before being accurately positioned onto the prepared greyboard pieces. The paper is then wrapped around the edges, while rollers or pressing devices remove trapped air and ensure a smooth, wrinkle-free surface. Finally, the corners are folded neatly to create clean and professional edges.

For manufacturers seeking higher productivity, a Case Making Machine automates paper positioning, wrapping, folding, and pressing, delivering excellent consistency while reducing manual labor.

Once the outer cover has been completed, an inner lining paper is applied to conceal the exposed greyboard edges and provide a clean interior finish.

Step 5: Manufacturing the Box Base

While the book cover is being produced, the box base is manufactured separately.

The greyboard for the base is prepared, grooved, folded, and wrapped with decorative paper using a process similar to that of the cover.

Depending on the product requirements, the box may also include custom inserts made from EVA foam, cardboard, paperboard, sponge, or other materials to securely hold the packaged product.

Accurate manufacturing of both the cover and the base ensures smooth assembly and a high-quality finished box.

Step 6: Final Assembly

The final stage is assembling the cover and the box body.

Water-based white glue or hot melt adhesive is applied to the designated bonding areas. The box body is then accurately positioned onto the cover before being pressed to achieve a strong and durable bond.

After assembly, the finished box is inspected for appearance, dimensions, magnetic alignment, and overall quality before packaging.

From Manual Production to Intelligent Manufacturing

Manufacturing a premium book-shaped rigid box requires precision at every stage—from greyboard preparation and grooving to magnet installation, case making, and final assembly.

Traditional manual production relies heavily on skilled operators and can be both labor-intensive and inconsistent. As production volumes increase, many packaging manufacturers choose to introduce automation to improve efficiency, product consistency, and production capacity.

At Wenzhou Rongda Packaging Equipment Co., Ltd., we provide complete post-press packaging equipment solutions covering every major stage of rigid box production.

Our product portfolio includes:

Rigid Box Making Machines

Our rigid box making equipment is designed to automate key forming processes while delivering stable production performance and consistent box quality. We offer both semi-automatic and automatic solutions suitable for different production capacities and factory layouts.

Case Making Machines

Our Case Making Machines efficiently produce hardcover cases for book covers, luxury packaging, book-shaped rigid boxes, and other premium products. They improve production consistency while reducing labor requirements.

Laminating Machines

Our Laminating Machines apply protective BOPP or PET films to printed paper before the box-making process. Film lamination enhances surface durability, improves appearance, and creates premium finishes such as gloss or matte effects.

Auxiliary Equipment

To help customers build complete production lines, we also supply a wide range of supporting equipment, including:

· Greyboard Grooving Machines

· Automatic Magnet Pasting Machines

· Corner Pasting Machines

· Box Pressing Machines

· Die Cutting Machines

These machines can be combined into manual, semi-automatic, or fully integrated production lines according to different production requirements.

Complete Solutions for Premium Packaging Manufacturers

Every packaging factory has unique production goals. Whether you are starting your first rigid box production line or expanding an existing factory, choosing the right equipment can significantly improve productivity and product quality.

At Rongda, we focus on providing practical, reliable, and cost-effective post-press packaging solutions for customers worldwide. From equipment selection and production planning to installation, training, and after-sales support, we work closely with customers to help them build efficient rigid box manufacturing lines.

Our equipment is widely used for producing luxury gift boxes, cosmetic packaging, jewelry boxes, electronics packaging, wine boxes, book-shaped rigid boxes, and many other premium packaging products.

Upgrade Your Rigid Box Production with Rongda

The growing demand for premium packaging continues to drive manufacturers toward higher efficiency, greater precision, and more flexible production.

With professional Rigid Box Making Machines, Case Making Machines, Laminating Machines, Grooving Machines, and Automatic Magnet Pasting Machines, Rongda helps packaging manufacturers improve product quality, reduce labor costs, and increase production efficiency.

If you’re planning to upgrade your rigid box production line or looking for a reliable post-press packaging equipment supplier, we’re here to help.

Contact Rongda today to discover how our complete packaging equipment solutions can support your next production upgrade.