UBL carton folding machines are designed for high-speed, precise, and fully automated carton folding. They are compatible with a variety of carton types, including Snap-Lock Bottom, Straight Tuck-End, Reverse Tuck-End, and Glue-Sealed cartons.
UBL is CE-certified and holds over 160 patents, exporting to more than 50 countries including the United States, Canada, Japan, South Korea, Vietnam, Malaysia, Australia, and Brazil. With advanced automation technology and strict quality control, UBL has built a solid reputation in the global market.
Customer-focused and innovation-driven, UBL provides reliable and efficient packaging solutions trusted by leading global enterprises and listed companies.
UBL carton folding machines utilize advanced multi-axis servo motion control to synchronize all folding, tucking, and locking actions with ±0.1mm precision. This ensures perfectly aligned creases and accurate panel engagement even under high-speed continuous operation. Ideal for e-commerce, cosmetics, and food industries, the system delivers consistent folding quality and superior production efficiency for demanding packaging environments.
The equipment features a robust modular frame made from high-strength alloy components, offering exceptional durability and easy maintenance. Its modular design allows quick integration and localized servicing, minimizing downtime and maximizing uptime. The system is compatible with multiple box styles—from mailer boxes to rigid two-piece boxes—meeting a wide range of folding and forming requirements.
Equipped with a precision hot melt glue system, UBL carton folding machines utilize servo-driven glue guns to achieve accurate glue output control within ±0.1 g. The glue lines are consistent, clean, and free of overflow, ensuring strong bonding for rigid boxes, lids, and glued cartons. Designed to meet food-grade packaging standards, the system delivers both high adhesion strength and hygienic compliance—ideal for cosmetics, food, and consumer packaging applications.
Built on a full Siemens automation platform, the UBL folding system integrates PLC, touchscreen HMI, and IoT-enabled monitoring. Operators can visually configure folding parameters, monitor real-time performance, and access remote technical support. This ensures long-term system stability, global service compatibility, and seamless integration with modern smart factory networks.
UBL’s recipe-based changeover system allows operators to switch between different box formats—such as mailer boxes, snap-lock bottoms, or tuck-end cartons—in under five minutes. Each format’s folding parameters can be stored and recalled via the touchscreen interface, dramatically improving flexibility for multi-SKU, short-run packaging lines and optimizing production efficiency for e-commerce fulfillment.
UBL specializes in providing professional mailer box folding machine solutions, engineered to handle a wide range of box styles with precision and stability. Our advanced folding systems are designed to adapt to the most common packaging structures in today’s market, helping businesses meet diverse packaging requirements efficiently.
Whether your production serves the toy, cosmetics, electronics, or e-commerce industries, UBL’s folding machine solutions deliver efficiency, flexibility, and reliability. We help manufacturers stay ahead in competitive markets—building stronger operations and greater profitability through advanced packaging automation.
In high-speed packaging operations, manual carton bottom formation often causes misaligned boxes, slow throughput, and inconsistent quality.
UBL’s Snap Lock Bottom Carton Erecting Machine addresses these pain points by fully automating bottom flap folding and locking for flat carton blanks. With a production speed of 1,500–2,400 pcs/hour, it supports a range of carton sizes and materials, ensuring precise bottom formation every cycle. Equipped with a Siemens PLC system, multi-axis servo drives, and recipe-based quick changeover, the machine enables rapid format switching with minimal downtime.
The stainless steel frame provides durability, hygiene compliance, and seamless integration into automated lines, making it ideal for food, cosmetics, electronics, and hardware packaging.
Equipped with multi-axis servo drives, the machine ensures precise forming and alignment between the box base and lid. This guarantees consistent box shape and tight fit even at high speeds.
Integrated hot melt or cold glue system with programmable glue patterns, achieving stable adhesive bonding for rigid materials like coated or laminated paperboard.
Change between box sizes and designs with stored digital recipes, reducing setup time dramatically—ideal for short-run and multi-size production.
Can be linked seamlessly with lid assembly, glue feeding, or inspection modules, forming part of a complete automated rigid box production line.
The UBL Mailer Box Folding Machine delivers a fully automated, high-speed solution for forming corrugated mailer boxes widely used in e-commerce, electronics, and hardware packaging.
Featuring a stainless-steel body, multi-axis servo control, and SIEMENS PLC system, it ensures precision folding, stable operation, and long-term reliability.
The intuitive touch-screen interface supports quick recipe-based changeovers, enabling flexible production across multiple box sizes.
With an output of up to 2400 boxes per hour, this automatic mailer box folding machine helps manufacturers enhance productivity, reduce labor costs, and achieve consistent, high-quality packaging performance—ideal for modern automated packaging lines.
Equipped with a multi-axis servo-driven system, the machine maintains excellent synchronization during high-speed operation. Each folding movement is precisely controlled, ensuring accurate crease alignment and reliable box integrity even under heavy workloads.
The robust stainless-steel frame provides durability and vibration resistance. It supports various box types, including corrugated mailers, flap-lock boxes, and e-commerce packaging, meeting multiple industry packaging demands.
Designed for efficiency, the UBL mailer box folder can produce up to 1800–2400 boxes per hour. It integrates smoothly with gluing, labeling, or cartoning systems, forming part of a complete automated packaging line to maximize ROI and operational uptime.
The SIEMENS PLC and touch-screen interface simplify operation and adjustment. Operators can easily switch box sizes and production modes through recipe-based changeovers, reducing downtime and improving overall production flexibility.
The UBL Rigid Box with Lid Folding Machine is engineered for premium 2‑piece box applications, such as cosmetics, electronics, hardware and gift packaging.
With an output speed of 1,800‑2,400 pcs/hour and supported size range approximately Length 200‑300 mm × Width 150‑200 mm × Height 50‑90 mm, the HL‑ZP30 model automates feeding, hot‑melt glue spraying, bottom & lid folding, and output of finished boxes.
Equipped with a full stainless steel frame, automatic box‑stack suction feeding device, and integrated forming, gluing and pressing mechanisms, this machine ensures high precision, consistent quality and seamless integration into packaging lines.
Ideal for the fruit industry – perfect for folding packaging boxes for cherries, grapes, and other fruits.
Equipped with multi-axis servo drives, the machine ensures precise forming and alignment between the box base and lid. This guarantees consistent box shape and tight fit even at high speeds.
Integrated hot melt or cold glue system with programmable glue patterns, achieving stable adhesive bonding for rigid materials like coated or laminated paperboard.
Change between box sizes and designs with stored digital recipes, reducing setup time dramatically—ideal for short-run and multi-size production.
Can be linked seamlessly with lid assembly, glue feeding, or inspection modules, forming part of a complete automated rigid box production line.
UBL’s Tuck‑End Box Erecting Machine is engineered for efficient and reliable box forming of both Straight Tuck‑End (STE) and Reverse Tuck‑End (RTE) cartons — widely used in pharmaceutical, cosmetic, snack, and stationery packaging. The system automates the full sequence: carton blank pickup, erecting, single‑ or double‑flap tuck folding, and ready‑for‑loading output.
Built with a Siemens PLC platform and multi‑axis servo drives, it ensures consistent forming precision and minimal downtime. Equipped with a touch‑screen HMI featuring recipe‑based changeover, it enables rapid size switching for flexible production demands. Robust stainless‑steel construction and hygiene‑friendly design make it suitable for demanding environments. From layout planning through commissioning to remote technical support, UBL offers full‑life‑cycle service to maximize production uptime and packaging quality.
Touch-screen HMI allows pre-programmed carton size settings for fast switching between products, ideal for multi-format, small- to medium-batch production.
Enables real-time diagnostics, troubleshooting, and preventive maintenance support, maximizing uptime and production efficiency.
Ensures accurate carton forming, flap folding, and smooth synchronization of all moving parts, minimizing misfolds and downtime.
Everything you need to know about carton folding machines, labeling systems, and automated packaging equipment is right here.
With decades of experience in the folding and packaging automation industry, UBL specializes in the R&D and manufacturing of high-precision folding machines for various box types — including Snap Lock Bottom boxes, Mailer Boxes, Glue-Sealed Cartons, Tuck End Boxes (STE/RTE), and Rigid Boxes with Lids.
This Q&A Portal is designed to provide a complete guide for evaluating and selecting carton folding equipment, helping you make informed decisions for your production line. Our goal is simple: to show that investing in reliable, qualified folding machines is the key to reducing costs, increasing efficiency, and improving packaging quality.
Choosing substandard machinery, however, can result in serious setbacks — including:
Escalating labor and maintenance costs
Frequent downtime or production interruptions
Reduced packaging precision and customer dissatisfaction
Beyond equipment performance, this portal also explores related topics such as packaging material compatibility, line integration, and industry-specific applications. Whether you’re packaging cosmetics, food, pharmaceuticals, or e-commerce products, you’ll find the right UBL folding solution tailored to your specific box structure and production requirements.
UBL carton folding machines are engineered to handle a wide range of box structures, including Snap Lock Bottom boxes, Tuck End cartons (STE/RTE), Mailer Boxes, Glue-Sealed Cartons, and Rigid Boxes with Lids. Each model supports precise creasing, folding, and closing operations, ensuring stable performance across various carton sizes, materials, and configurations. Whether your packaging requires hot-melt sealing, mechanical tucking, or automatic bottom locking, UBL provides a tailored folding solution to fit your needs.
UBL folding machines are designed for versatility and are widely used in cosmetics, pharmaceuticals, food and beverage, electronics, daily chemicals, and e-commerce logistics. Their modular design and recipe-based format switching allow quick adjustments for different box types and production requirements, making them ideal for multi-product, small-batch manufacturing environments.
All UBL folding equipment is built with high-grade stainless steel frames and enclosed guarding systems that meet CE certification standards and international safety requirements. The machines follow hygienic design principles, minimizing dust accumulation and ensuring easy cleaning for food-grade and pharmaceutical packaging environments. Electrical components from SIEMENS and Schneider ensure stable, compliant, and globally serviceable operation.
A carton folding machine is an automated system designed to fold and form flat carton blanks into finished box structures, ready for filling or sealing. It automates complex folding processes such as tucking, gluing, and locking, reducing manual labor and improving consistency. UBL’s folding machines integrate servo-driven precision motion control and intelligent HMI interfaces to ensure accurate, repeatable results at high speeds.
UBL carton folding machines incorporate a full suite of automation technologies:
Multi-Axis Servo Motion Control for synchronized, precise folding actions.
Recipe-Based, Motorized Changeover to switch box formats in minutes.
SIEMENS PLC and HMI System for intelligent monitoring and control.
Remote Connectivity for global online diagnostics and technical support.
Optional Hot-Melt Glue Integration for sealing high-end rigid or glued cartons.
These features enable continuous, high-efficiency production with minimal downtime, ideal for modern automated packaging lines.
UBL folding machines are designed to work with a wide variety of carton materials — including corrugated board, coated paperboard, laminated card stock and recycled board. The machines’ servo‑driven motion control and automatic creasing systems ensure reliable folding across variable thicknesses and finishes, making them suitable for everything from economical e‑commerce mailer boxes to premium gift packaging.
Typical lead time for a standard UBL folding machine is approximately 8‑12 weeks from order confirmation to shipment. Installation, commissioning and operator training on‑site usually take 1‑2 weeks depending on the production environment and integration complexity. With recipe‑based quick changeover features and service support, your production line can be fully operational soon after installation.
Yes — UBL folding systems are engineered for easy integration. The modular structure, stainless steel frame and standardized electronic interface allow them to be seamlessly connected with upstream feeding or blanking machines and downstream loading, gluing or labeling equipment. This flexibility enables efficient upgrades of existing line systems without full replacement.
We provide solutions across a wide range of industries. To learn more, please click below to view our case studies.
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UBL carton folding machines are versatile, serving a wide range of industries.
In e-commerce, they’re used for folding and forming bluetooth device boxes, phone boxes, vaping device boxes, charger boxes, and more.
For the food industry, applications include cookie boxes, chocolate boxes, tea boxes, breakfast cereal boxes, frozen food containers, and other packaging—all precision-folded and formed to meet industry standards.
The Straight Tuck-End (STE) carton is one of the most widely used packaging styles in the industry. Its tuck-in flaps are integrated with the main panels of the carton and close through a straight tuck mechanism, offering a simple and user-friendly structure.
The Reverse Tuck-End (RTE) carton follows a similar structural logic to the Straight Tuck-End design but features oppositely oriented tuck flaps — one on the front panel and one on the back panel. This reverse-folding structure provides enhanced compactness and better space efficiency during packaging
The Snap-Lock Bottom, also known as the 1-2-3 bottom, is a popular and easy-to-fold carton base design. Its flaps interlock with each other to create a secure and tight closure.
The Auto-Lock Bottom carton features a self-locking base structure. When the carton blank is erected, the pre-folded bottom flaps automatically interlock to form a secure base without the need for manual assembly, ensuring quick and stable carton formation.
The Rigid Box with Lid, a premium two-piece packaging style, is defined by its sturdy construction and separate lid-base structure. Crafted from thick, rigid board, it exudes luxury and durability, making it ideal for high-end products like cosmetics, jewelry, electronics, and luxury gifts. Its elegant design elevates brand perception while ensuring exceptional product protection.
The tuck-and-lock carton features a composite structure that combines a tuck flap with interlocking closures to achieve secure sealing. It offers excellent overall strength and effectively resists impact during handling, making it especially suitable for packaging fragile or delicate products.
Guangdong Huanlian intelligent Packaging Group Co., LTD
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