With the increasing demand for high-end packaging, gift packaging and rigid box products, packaging enterprises have put forward higher requirements for cardboard processing efficiency, slot accuracy and mass production capacity. Traditional manual slotting method is not only limited in productivity, but also prone to location bias and inconsistent slotting depth during mass production.
Automatic slotting machines are used to create V-shaped grooves in materials such as industrial cardboard, gray cardboard and MDF in preparation for subsequent bonding, folding and box-forming processes. For example, in rigid box production, precise grooving ensures that the plate folds exactly as designed, thus improving the shape of a superior finished box shape. Koten's SW-A series automatic slotting machines make ideal for continuous mass production, integrating automatic feed, automatic alignment correction, automatic collection and waste discharge.

1. Rigid Box Packaging Industry
Rigid box packaging is one of the main application fields of automatic slotting machine. Production of cardboard boxes usually requires precise grooves in ash or other industrial cardboard before the material enters the bonding, paper laminating, folding and molding stages.
From a supplier's perspective of view, if a client's core products is a high-end hard box with a high order volumes, then automatic slotting equipment can reduce repetitive manual labor and improve the continuity of the initial paperboard processing phase.
Common products include:
- Gift boxes
- Mobile phone box
- Shoe boxes
- Shirt boxes
- Clothing boxes
- Jewellery boxes
- Chocolate boxes
Hardware packaging boxes
Koten's automatic grooving machines, designed for the pre-processing stage of a hardbox production line, creates precise V-shaped grooves on cardboard.
2. Gift Boxes and High-End Packaging
Gift boxes are often demanding in appearance, structural integrity and molding quality. This is especially true for lids and baskets, bookcases and certain rigid boxes with irregular shapes, all of which require consistent folding positions during manufacturing.
Automatic slotting machines allow a specific groove locations to be configured according to the structure of the product, ensuring that the cardboard folds along a predetermined route during subsequent molding. For gift packaging, automatic slots also have the distinct advantage of reducing errors caused by manual positioning. When dealing with large order volumes, the stability and repeatability of the equipment directly affect overall production efficiency.
3. Shoebox and Clothing Packaging
Shoeboxes, shirt boxes and apparel packaging boxes are common applications of automatic slot machines. Such packaging usually requires a certain rigidity, as well as neat fold lines and a stable box structure.
During production, the cardboard must be slotted before moving on to the next folding and shaping stage.
For shoebox and suitcase manufacturers, key factors to consider when choosing an automatic slot machine include:
Maximum and minimum dimensions of cardboard processing
Cardboard thickness range
Number of grooves
Slotted Angle
Processing speed
Automatic feeding method
Automatic calibration/correction capability
For example, different models in the Koten SW-A range can accommodate different cardboard size, with handles ranging from 0.6mm to 4mm thick and adjustable slotting angles of 80-140°.
4. Mobile and Consumer Electronics Packaging Industry
Products such as mobile phones, headphones and small electronic devices often use packaging boxes that meets certain hardness and aesthetic standards. High-end electronics packaging not only to protect the product, but also through the structural design of the box to reflect the high-end quality of the product.
Automatic slotting machines are used for preprocessing cardboard in rigid electronics boxes; by producing precise V-shaped slotting, they provide the basis for subsequent folding and shaping.
For electronics packaging manufacturers dealing with various product specifications, the ease with which equipment can be adjusted and the efficiency of switching between orders must also be taken into account.
5. Jewellery Box and Cosmetic Packaging
Products such as jewelry and cosmetics often require a high level of aesthetic and structural precision in packaging. Jewellery and cosmetic gift boxes tend to have intricate rigid box structures, meaning the quality of the grooves directly affects the outcome of subsequent folding and shaping processes.
For these customers, we generally recommend-aside from simply checking machine speed-that they test against actual cardboard materials, size and specific slotting requirements. For high-end packaging, consistent processing quality is often more important than simply chasing maximum speed.
6. Food and Chocolate Packaging Industry
Rigid boxes are often used for premium foods, chocolates and gifts. Especially for holiday gift boxes, branded boxes and high-end food packaging, paper boxes have to balance structural integrity with aesthetics.
Automatic slotting machine is used for the V-grooving pretreatment cardboard, which lays the foundation for subsequent box production.
Apps listed on the Koten website include chocolate boxes, premium food packaging boxes and other high-end paper packaging products.
It is important to note that slots are used for cardboard pretreatment and that the final packaging meets food packaging standards, depending on a comprehensive evaluation of panel materials, adhesives, printing, etc.
7. Printing and Post-Printing Companies
Automatic slotting machine is suitable not only for professional rigid box factories, but also for some printing and post-printing processing enterprises.
For printing enterprises, customers' packing orders often involve printing, laminating, paper mounting, slotting, folding, box forming, and multiple other processes. Companies that already have front-end printing equipment and want to expand post-print packaging capabilities might consider adding automatic slot machines.
From a supplier's perspective of view, we generally advise customers to configure equipment based on existing production lines, rather than buying stand-alone equipment whose production capacity does not match other workflows.
8. Paper Processing and Packaging Manufacturers
Paper processing companies deal with a large number of product specifications and orders, therefore when choosing an automatic slot machine must be based on actual production needs.
The Koten SW-A series, for example, currently offers models such as the SW1000A, SW1200A and SW1300A. These models have a maximum width of 930mm, 1130 mm and 1230 mm respectively, and support a range of cardboard lengths.
The device achieves a production speeds of 130–150 pieces per minute and supports simultaneous processing of multiple blades. Nine blades are available on The SW1000A and SW1200A models and 10 blades on the the SW1300A.
Therefore, for paper manufacturers processing large orders, multi-blade processing and automatic feeding capabilities can help reduce labor and improve overall production efficiency.
9. How Do I Know If an Automatic Slot Machine Is Right for My Business?
Not every carton maker needs to invest immediately in high-speed automatic slot machines. As equipment suppliers, we generally recommend that customers evaluate the following factors:
- Order volume: The larger the volume of batch orders, the greater the advantage of automated equipment.
- Product Type: Automatic slot machine for the main production of hard boxes, high-end gift boxes and other products manufacturers to provide high value products.
- Sheet Specification: Ensure that the equipment can handle the dimensions and thickness required for actual production.
- Slotted requirements: determine the number of grooves, spacing and angles according to the product structure.
- Production line configuration: Consider how the grooving machine's capacity is aligned with downstream equipment such as adhesives, folders and box molding machines.
- Labor costs: Automation can help reduce repetitive labor if manual feeding and positioning consume significant production time.
Therefore, when choosing an automatic slot machine, the most important thing is not simply to compare prices, but to determine whether the device can effectively solve the company's current production challenges.
Frequently Asked Questions
1. Which Industries Mainly Use Automatic Slot Machines?
Automatic slot machine mainly used in the rigid box, high-end packaging industries, products including gift boxes, shoe boxes, mobile phone boxes, jewelry boxes, clothing boxes, chocolate boxes, electronics packaging.
2. What Materials Can Automatic Slot Machines Process?
Mainly processing industrial paperboard, grey board, medium density fibreboard and so on suitable for rigid box production of plate. Specific material ranges shall be determined on the basis of the type of equipment and the material actually used.
3. Why Are Automatic Slot Machines Suitable for Mass Production?
Automatic slotting machine integrated with automatic feed, automatic alignment correction, automatic collection, automatic waste discharge and other functions. Multi-blade processing is also supported, reducing repetitive manual operations and increasing continuous production efficiency.
4. Does the Automatic Slot Function Slot from Different Angles?
Yes. The slotted angle of the Koten SW-A series can be adjusted between 80° and 140°, depending on specific rigid box structure and folding requirements.
5. What Is the Rate of Production of Automatic Slot Machines?
According to the technical specifications of the Koten SW-A series, the machine can produce between 130 and 150 pieces per minute, but the actual speed depends on the material, specifications and production conditions.
6. How to Choose the Right Automatic Slot Machine?
It is suggested that the comprehensive selection should be made according to the size, thickness, number of grooves, slot spacing, slot angle, yield and subsequent processing steps. Different product types and capacity requirements require different models.
7. Is the Automatic Slot Function Integrated with Other Rigid Box Equipment?
Yes. Automatic grooving is a pretreatment step in rigid box manufacturing, and the machine can be integrated into the production line with subsequent processes such as bonding, paper laminating, folding and box forming. The specific configuration should be based on the customer's product and production capacity.
Conclusion
The core value of automatic slotting machine lies not merely in ``slotting on cardboard '', but also in improving efficiency and consistency of cardboard pretreatment in cardboard boxes and high-end packaging manufacturers through automatic feeding, precise positioning, multi-chip processing and continuous operation.
As suppliers, we advise customers to choose equipment based on product type, cardboard size, material thickness, order volume and overall production line capacity, rather than simply pursuing faster or larger models.
If you're interested in automatic slot machines and please more detailed product information, contact the manufacturer directly by filling out the form below: We can then recommend the most suitable model and configuration according to your specific production needs.









