Semi-Automatic Cardboard Box Sealer SR4 | Adjustable Carton Sealing Machine

Semi-Automatic Cardboard Box Sealer SR4

The SR4 Semi-Automatic Cardboard Box Sealer is a versatile and efficient carton sealing machine designed for reliable top and bottom tape application. Engineered with automatic size adjustment capability, it adapts quickly to different box formats, making it ideal for dynamic packaging environments.

This machine ensures stable box alignment during manual filling and delivers consistent sealing performance through synchronized motorized drive belts and precision tape heads.

Main Features

• Semi-automatic carton sealing system

• Automatic adjustment to different box sizes

• Centering unit for box alignment and stability during filling

• Upper and lower motorized drive belts (2 × 50 mm each)

• Conveyor belt speed: 20 m/min

• Motor power: 0.13 HP

• Dual tape heads K11 (50 mm width)

• Optional K12 tape heads (75 mm width)

• Adjustable working height: 500–750 mm

Operating Cycle

• Filled boxes with closed side flaps activate the upper tape head switch

• Upper frame automatically adjusts to box height

• Motorized belts transport the carton through the machine

• Simultaneous sealing of top and bottom flaps

• Continuous and smooth sealing process

Box Dimensions

SR4 Model

• Minimum size: 140 (W/H) × 110 (H) × 150 (L) mm

• Maximum size: 500 (W) × 500 (H) × — (L depending on configuration)

SR46 Model

• Minimum size: 160 (W/H) × 100 (H) × 200 (L) mm

• Maximum size: 500 (W) × 500 (H) × — (L depending on configuration)

Optional Accessories

• Wheels – 4 swivel wheels with brake

• RN04 conveyor – 500 mm length

• RN1 conveyor – 1 m length (custom sizes available)

• GTL500/3 infeed conveyor – 500 mm width

• Flexible output conveyor – extendable from 1.5 to 4.5 m (500/650 mm width)