Top and bottom drive models are the most standard and widely used type of carton sealing equipment, with drive belts located on both the top and bottom surfaces of the carton path. This design provides stable, even pulling force for cartons of varying weight, and it works reliably for standard corrugated boxes of regular shape. Most general-purpose manufacturing facilities and warehouses choose this type for its simple structure, easy maintenance, and wide size adjustment range. The automatic box sealer with this drive method handles both light and moderately heavy cartons, making it a versatile choice for facilities that pack multiple product categories. Side drive models, by contrast, use drive belts on the left and right sides of the carton, and they are designed specifically for narrow, tall cartons that cannot be gripped well by top and bottom belts. They are commonly used in industries such as cosmetics, pharmaceuticals, and stationery, where products are packed in tall, slim boxes.
Corner edge sealers, also known as "H" sealers, form a separate category that seals both the top and bottom seams and the four corner edges of the carton. This creates a stronger, more dust-proof and moisture-proof seal that is ideal for long-distance shipping, export cargo, and products that require high protection such as electronics and precision instruments. The automatic box sealer in this category usually works alongside a standard top-bottom sealer to complete the full H-shaped sealing process. Another specialized type is the random size auto-adjust sealer, which uses sensors to detect the dimensions of each incoming carton and adjusts its guide rails and press plate automatically without manual setting. This type is perfect for e-commerce fulfillment centers and third-party logistics warehouses that process hundreds of different carton sizes every day. There are also heavy-duty models built with reinforced frames and high-power motors for extra-heavy cartons such as hardware parts, building materials, and bulk industrial supplies.