Single Sachet Wet Wipes Machine with Four Side Sealing System

The single-wipe, four-side seal packaging machine is a continuous-operation system designed to fold automatically, dose with liquid, cut, and heat-seal individual wet wipes (or small-format packs) on all four sides. Primarily used for the high-speed, standardized production of baby wipes, alcohol-based disinfecting wipes, and portable cleaning wipes, it enhances production line stability and per-unit output efficiency while ensuring excellent seal integrity and hygiene standards.

Process Flow and Structural Composition

The equipment typically comprises an unwinding system, a folding mechanism, a precision liquid dosing system, a cutting unit, and a four-sided sealing module. Base materials usually consist of spunlace non-woven fabric or wet-strength paper, paired with PET/PE composite film packaging. The production process involves: raw material unwinding → automatic folding → precision liquid dosing (with dosage variance typically controlled within ±1–3%) → continuous cutting → single-wipe positioning → four-side heat sealing → coding and output.

The four-sided seal is achieved through heated compression using upper and lower molds; sealing temperatures are generally maintained between 120°C and 180°C to ensure seal strength and barrier performance. Depending on the configuration, the line speed typically ranges from 100 to 300 packs per minute, with high-end, multi-lane models capable of achieving even higher capacities.

Core Equipment Performance and Control Logic

Key to this equipment’s performance is synchronized control and a stable liquid supply system. Servo drives regulate the timing of the cutting blade and sealing mechanism, ensuring precise alignment of each wipe to prevent misalignment, which could lead to sealing defects or wrinkles. The liquid system utilizes metering pumps or pneumatic piston pumps to ensure stable dispensing of various formulations (such as purified water, alcohol, or skincare solutions).

Regarding temperature control, the four-sided sealing module typically employs zoned temperature regulation to prevent localized overheating that could cause the packaging film to shrink. Some high-end models incorporate PLC and HMI control systems to monitor output, sealing temperatures, and fault alarms in real-time, thereby enhancing continuous operational stability and minimizing losses associated with downtime.

Application Scenarios and Production Value

Single-wipe, four-side sealed wet wipes are widely used in medical disinfection, disposable foodservice cleaning, and portable travel applications—scenarios that demand high standards for seal integrity and contamination resistance. Compared to traditional folded-pack wet wipes, the four-side-seal structure offers superior barrier properties, effectively extending the product’s moisture-retention period and reducing the risk of leakage during transport.

From a production perspective, the equipment’s value lies in its high level of integration—combining slitting, liquid dispensing, and packaging—which minimizes manual intervention and ensures more stable single-line output. It also supports rapid switching between specifications, making it ideal for OEM operations and multi-product line configurations.