Plastics Joining Solvent Dispenser

An enormous number of medical and non-medical products are assembled using plastics joining solvents. Traditionally, the majority of these assemblies have been made by dipping the components into a small container of solvent and then blotting the excess away.

This method although effective, presents a number of problems:

• Operator is exposed to high levels of solvent vapor.
• The wetting of the component is inconsistent as the depth of solvent in the container is constantly varying.
• The operator is less efficient due to the wasted motion of blotting.
• There is typically a substantial volume of solvent wasted in the blotting operation.
• There is a fire hazard presented by solvent in an open container.

After years of using the dip and blot method and struggling with the few commercially available dispensers, we designed the SD7200™ Solvent Dispenser. In the three years since its' introduction, the SD7200 has become the product of choice for many of the world's largest medical device manufacturers. Due to the value engineered design it is also selected by much smaller firms as well. The product is so versatile, it is used by several companies to apply silicone lubricants to components.

The model SD7200™ Solvent Dispenser represents a break through in solvent dispensing technology. From the ground up, this dispenser has been engineered with diverse medical bonding in mind. Designed for the operator, the technician, the manufacturing/process engineer and the safety manager, the model SD7200 is unsurpassed in performance, reliability and safety.

Principle Of Operation
The model SD7200 consists of two primary subsystems: A pump drive module and a fluid delivery module.

The pump drive module is 100% pneumatically operated to minimize explosion hazards associated with solvent dispensing. Plant line air is coupled to the dispenser with a standard quick disconnect fitting. A dual acting air cylinder is controlled by an air bearing, pneumatically piloted control valve. This bi-directional valve is speed controlled by a precision integral regulator to allow repeatable metering of solvent.

The fluid delivery module consists of a primary reservoir, a positive displacement pump, a secondary reservoir and a solvent applicator. Solvent is transported from the primary reservoir to the secondary reservoir by a fully submerged piston pump. This pump is actuated by the pump drive module described above. The solvent is then gravity fed from the secondary reservoir into the application area. A solvent film is uniformly applied to the desired component by transfer from non-clogging porous materials contained in the applicator.

Design Criteria
The model SD7200 is designed and manufactured to provide highly accurate uniform dispensing with a minimum of effort and a maximum of operator safety. The product will perform reliably on a wide range of external diameters, internal diameters, and both simultaneously.

Configurations
Applicators are custom made to your components. Each Model SD7200 comes with one applicator of your choice. Applicators can also be ordered with large tapered lead-ins to facilitate easier component location. All configurations are interchangeable.

Benefits | Specifications | Design Form