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What are the current models of Oushida’s piston pump hot melt adhesive dispensers?

Posted by iwonder

A piston pump hot melt adhesive dispenser is a specialized device that combines the volumetric conveying principle of a piston pump with the heating and melting properties of hot melt adhesive. Its core function is to melt solid hot melt adhesive into a liquid state, then apply the liquid accurately and stably through the high-pressure push of the piston pump (for applications such as packaging edge sealing, product assembly, and label application).

Its operating principle is based on the coordinated operation of two core systems: hot melt adhesive processing and piston pump delivery. This can be broken down into four key steps: heating and melting, negative pressure adhesive suction, high-pressure adhesive delivery, and precise coating.

A piston pump hot melt adhesive dispenser operates in a closed loop: “adhesive melt → pump delivery → precise coating,” with each step seamlessly integrated. The piston pump in a piston pump hot melt adhesive dispenser is not an ordinary liquid delivery pump; it must be adapted to the high temperature, easy solidification, and high viscosity characteristics of hot melt adhesive.

Advantages of piston pumps:

1. Stable delivery pressure, suitable for high-viscosity hot melt adhesives: Hot melt adhesive remains a high-viscosity fluid even after melting. Conventional gear pumps experience pressure fluctuations during delivery due to their high viscosity. The structural characteristics of piston pumps perfectly address this issue.

2.High coating precision meets the demands of refined production: Industrial applications (such as electronic component packaging and medical product bonding) require stringent “quantity and positioning” accuracy in hot melt adhesive coating. The piston pump’s structural design makes it a key choice for high-precision coating.

3.Wide adaptability for adhesive materials, compatible with multiple types of hot melt adhesives: Hot melt adhesives used in different industries have widely varying properties (e.g., EVA adhesive, PU adhesive, polyamide adhesive, and hot melt pressure-sensitive adhesive). Piston pump hot melt adhesive dispensers can accommodate a wide range of adhesive types without requiring significant modification.

4.High operational reliability and low maintenance costs: Hot melt adhesive machines require continuous operation (such as a 24/7 packaging line). Equipment failure rate and ease of maintenance directly impact production efficiency. The piston pump structure offers significant advantages in this regard.

5.Fast start-stop response, suitable for intermittent production: Some scenarios (such as label application and intermittent product assembly) require the hot melt adhesive machine to be “on and off” to avoid glue solidification or dripping during downtime. The characteristics of the piston pump are perfectly adapted.

In short,the primary operating principle of a piston pump is the conversion of hot melt adhesive states and the volumetric delivery of the piston pump. This principle determines its core advantages: stable delivery of high-viscosity hot melt adhesives, high coating precision, and controllable pressure. Therefore, it is widely used in industrial applications with strict requirements for adhesive adhesion quality (such as food packaging, automotive interior assembly, and electronic component packaging).

1.OSD-106A: 5kg piston pump, with a 5kg tank capacity, 2000W power, a melt rate of up to 5kg per hour, and a voltage of 220V. This model can connect two hoses.

2.OSD-812A: 12kg piston pump, with a 12kg tank capacity, 2800W power, a melt rate of up to 10kg per hour, and a voltage of 220V. This model can connect four hoses.

3.OSD-806A: 5kg piston pump, with a 5kg tank capacity, 4000W power, a melt rate of up to 5kg per hour, and a voltage of 220V. This model can connect two hoses.

4.OSD-106B: 5kg piston pump, with a 5kg tank capacity, 2000W power, a melt rate of up to 5kg per hour, and a voltage of 220V. This model can connect four hoses.

5.OSD-620A：20kg piston pump ,with a 20kg tank capacity, 3900W power, and a melt rate of up to 20kg/hour , and a voltage of 220V. This model can connect six hoses.

The above are OSD piston pump hot melt machines. If your product requires a fast glue shutoff, you can select the piston pump hot melt machine that best suits your production line based on our various models.