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Meter Mix Dispensing Systems

The proper meter mix system and dispensing process is key to dispense two components adhesives and encapsulants. Shot-size accuracy and range, adjustable flow rate and consistent ratio are critical aspects of a two components meter mix dispensing system.

2-Part Meter Mix Dispensing Systems

2-part (also known as 2K) meter mix dispensing systems require a good understanding of the properties of the materials and studying the different process requirements. Whether it’s dotting, line, or potting, meter-mix machines are complex and highly customized to meet the user’s needs.

Following are the four commonly used metering methods for meter mix dispense systems.

Piston Displacement

The piston displacement method works by attaching a piston to the end of a rod, with which material is pushed out positively from the cylinder. The internal diameters of the 2 cylinders determine the mixing ratio and dispensing amount for each dispensing stroke. The dispensing speed and amount of a meter mix dispensing system can be set by the magnitude and speed of the piston movement during the dispensing cycle.

Positive Rod Displacement

This method uses a solid rod to displace fluid as it moves in and out of a cylinder into which material is fed. Metering is accurate with good repeatability as the rod displaces a fixed amount for each stroke. The ratio can be changed by simply replacing one of the rods with a different diameter.

Progressive Cavity Pump

The Progressive Cavity Pump consists of a rotor and stator that forms a perfectly sealed metering chamber within a housing. It dispenses continuously with a rotary displacement action based on the screw pump principle.

Precision Gear Metering

This method uses the gear size and rotation speed to determine the ratio and dispensing amount. As such, these factors can be changed very easily by changing the rotation speed of the gear pumps. The precision gear metering system provides a continuous flow of material without the need to reload. We have a video demonstration of this gear metering system, please click here.

It is less suitable for materials with abrasive fillers as it will require more maintenance due to higher wear and tear of the gears.

Amongst the above 4 metering methods, if your material contains fillers, we would recommend positive rod displacement method because of the advantages mentioned below:

  1. Ease of Bleeding of Bubbles: As material goes in from the bottom of the cylinder and goes out from the top, existing bubbles in the system can be bled easily via a venting outlet at the top of the cylinder.
  2. Ease of Changing of Mixing Ratio: Changing rod size to cater to change of mixing ratio can be achieved quickly and at a low cost.

Ideal Meter Mix Solution for Two-part Material

Gear Pump Meter Mix Dispensing System by Technodigm™ is a 2-part dispensing system that provides high-precision volumetric metering, homogeneous mixing, and consistent dispensing.

TechnoDigm™ possesses over two decades of experience with fluid dispensing and UV curing technologies. Do speak with us for a consultation on your meter-mix-dispensing process and regarding our 2-part meter mix dispensing systems.

Meter Mix Dispensing System For Two-Part Material

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Our featured content focuses on our core competencies and design such as our two-part material meter mix machine.

“The launch has been in the works for weeks and it’s finally here! Introducing a new webpage that will help potential clients learn how TechnoDigm™ can improve their manufacturing process, especially with two-part materials using our two-components dispense systems.” Said Mr. Lee, Lead Engineer

Mixing Methods Meter Mix Dispensing System

The need to meter, mix and then dispense lubricants, adhesives, epoxy, and other fluid products is an essential step in almost every manufacturing process.

With so many different meter mix machines available in the market, how do we know which one suits our needs?

To first identify which meter mix dispense equipment is suitable for your needs, we need to first decide which mixing method we need.

The 2 types of mixing methods are Static Mixer and Dynamic Mixer.

Static Mixer

Static mixers come in a wide range of sizes and a number of mixing elements. These mixers are disposables, thus providing a maintenance-free mixing solution. Mixing is effective upon selecting the correct diameter and number of mixing elements.

Dynamic Mixer

With a motor driving a rotor shaft, metered fluids are mixed thoroughly when they are fed into the chamber. The dynamic mixer comes with a flushing port to allow the solvent to be purged through the chamber to prevent mixed materials from curing when it remain within the chamber beyond the pot life.

Feeding Methods Meter Mix Dispensing Systems

Pressure Tanks

This method facilitates a continuous supply of material to the dispensing system without the need for frequent refilling. Sizes ranging from 3L to above. Configured to incorporate these options:

Pressure Pumps

Allow high-viscosity material to be dispensed directly from cans in varying sizes. These pumps can be configured to include level sensors and alarms.

Dependent on material viscosity and mixing ratio

These are some basic comparisons between our machines like the 2k meter mix dispense system for easy referencing.

Meter Mix Dispensing Systems

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