Fully Automatic Flap

Product Overview

The fully automatic flap‑folding case sealer is an intelligent packaging machine that automatically folds the top flaps (front, side, and rear) of corrugated cartons and applies tape to seal the top and bottom in a single pass. The unit completes both top‑flap folding and “I‑type” (straight‑line) taping without any manual intervention. It can operate as a stand‑alone machine or be integrated into an automated packaging line, making it a core component of modern production environments.

Product Core Advantages

1. Significantly Increased Packaging Efficiency

Compared to traditional manual sealing, the fully automatic flap‑folding case sealer boosts packaging speed by 30%–80%. The machine achieves sealing speeds of 15–20 cartons per minute (approximately 300–360 cartons per hour), with some models reaching up to 25 cartons per minute. High‑speed, stable operation ensures smooth material flow and substantially increases overall throughput.

2.Drastic Reduction in Labor Costs

The fully automatic folding and taping process replaces multiple manual operators. Workers only need to periodically replenish cartons and tape rolls, minimising manual intervention and alleviating labour shortages. Additionally, the machine can save 5%–10% of consumable tape costs through consistent application.

3. Consistent Sealing Quality

Automatic operation eliminates common manual defects such as misaligned tape, wrinkled tape, weak seals, and uneven length. The resulting seal is flat, neat, and professional‑looking. When printed tape is used, the final package enhances brand image.

4. Flexible Integration

The machine can be used independently or incorporated into an automated packaging line. It can be combined with a four‑corner case sealer to form a fully automatic “I‑type” sealing system, or paired with a strapping machine for integrated strapping and sealing. This versatility meets the needs of facilities ranging from small‑scale factories to large distribution centres.

5. Long‑Term Reliability

Precision‑built mechanical components and a robust structural design ensure vibration‑free operation. Key parts undergo rigorous endurance testing to guarantee continuous, trouble‑free performance with minimal downtime.

Product Features

Intelligent Control

• Equipped with a PLC control system for stable, reliable operation; simple to operate and maintain.

• Automatically senses and adjusts to the width and height of incoming cartons – no manual changeovers required.

• The machine’s control logic handles the entire sealing cycle without operator intervention.

High‑Efficiency Sealing Mechanism

• Automatically folds the front, side, and rear top flaps, then applies top and bottom tape in a single “I‑type” pass.

• Side‑gripping belt conveyor ensures stable, straight transport without lateral deviation.

• The tape head unit features a robust, precision‑engineered design for smooth application and wrinkle‑free taping.

Stable and Durable Drive System

• Main transmission incorporates special bearing housings for high precision and low noise.

• Lower dual‑belt drive provides smooth, consistent carton advancement.

• Left‑and‑right drive configuration, combined with a pneumatic flap‑folding mechanism, guarantees stable operation.

Safety and Ergonomic Design

• Fitted with blade guards to prevent accidental operator injury during tape cutting.

• Dual‑column structure enhances rigidity, eliminates shaking during folding, and significantly reduces noise.

• Equipped with heavy‑duty locking casters for easy repositioning and flexible workshop layout.

Energy Efficiency and Tape Compatibility

• Low power consumption (typically 240W–450W) ensures economical operation.

• Compatible with standard BOPP sealing tape in widths of 48mm, 60mm, or 75mm; supports extra‑long rolls (e.g. 1000 yards) to further reduce consumable costs.

Wide Application Scope

This automatic box erecting machine serves as front-end core equipment for automated packaging lines, designed for mass continuous carton forming. It is compatible with most standard corrugated cartons and widely deployed across multiple industries:

• E-commerce & Logistics Warehousing

Large e-commerce warehouses, cross-border logistics centers, express parcel automated sorting and packaging assembly lines.

• Food, Beverage & Daily Consumer Goods

Snack food, drinks, household cleaning supplies, cosmetics and personal care product packaging workshops.

• Electronics & Hardware Manufacturing

Electronic components, electrical accessories, hardware tools, auto parts finished goods packaging lines.

• Pharmaceutical Industry

Medicines, medical supplies, health care products standardized carton packaging production.

• General Processing Factories

Medium and large manufacturing enterprises upgrading manual packaging to automatic packaging assembly lines.

It is the preferred front-end automation equipment for enterprises planning to build unmanned packaging workshops and realize full-process carton automation from box erecting, loading to sealing.

About Us

Nanjing Sazi Machinery Technology Co., Ltd. Established on July 12, 2013, Nanjing Sazi Machinery Technology Co., Ltd. specializes in the R&D and sales of advanced packaging and coding equipment. Our core product portfolio includes Delta Robot Case Packers, Delta Robot Case Packing Workstations, Collaborative Robotic Palletizing Workstations, Fully Automatic Large Bag Packaging & Palletizing Lines, Fully Automatic Vertical Packaging Units, Robotic Case Erectors, and Automatic Carton Sealers. Additionally, we offer a comprehensive range of coding solutions, including UV, CO2, and Fiber Laser Marking Machines, as well as CIJ (Continuous Inkjet) printers.

We provide complete product identification solutions and industrial online continuous coding equipment with consumables. Our products are widely applied across various industries, including pharmaceuticals, food, cosmetics, beverages, cables, pipes, electronics, and chemicals.

Corporate Strength & Qualifications

Holding independent import and export qualifications, Sazi Machinery has established a robust service network with branches in Hefei and Shanghai, covering the East China region. The company owns 4 registered trademarks and 5 patents. We have maintained excellent corporate credit ratings, achieving an AAA principal credit rating in 2025 and an A taxpayer credit rating in both 2023 and 2024.