Products /
RESERVOIR / CONVEYING

Reservoir / Compensator

In order to bridge the time for a container change, an accumulator with different conveyor drives depending on the application can be used as an efficient and inexpensive variant. This is particularly useful in fully automated production lines where an interruption for a container change is not desired. Of course, the accumulator also serves to cover peaks in the adhesive demand. In this case we also call it a compensator. Depending on the required accuracy, pressure and delivery or dosing capacity, a gear pump is used on the accumulator/compensator directly or with an intermediate hose as a delivery drive or for dosing the adhesive quantity.

The area of application of the accumulator is mainly in operation with drum and bag melters, where it is not possible to change the container directly while the system is running. The accumulator is also a low-cost alternative to tandem or dual systems. The accumulator as a compensator, on the other hand, is used before a feed or metering pump or directly as an application quantity stabilizer. Pistonless expansion joints are also used for special applications.

Standard accumulators are available with capacities from 0.1 to 3 litres and compensators from 2.5 to 100 cm3.

Heating Hoses

Heating hoses are used to transport molten adhesive or sealant. In some cases the hose is also used to increase the temperature (gradual heating, especially with reactive hotmelt). The integrated heating and the external insulation ensure a constant temperature control of the adhesive. Hose type, inner diameter and length are designed according to adhesive characteristics and requirements, such as distances to be covered or maximum required flow rates.

• Standard lengths = 2, 4, 6 and 8 m; special lengths from 0.3 to 12 m
• Inner diameter = 6, 8, 10, 13, 16, 20 or 25 mm
• Pressures up to 300 bar at 200 °C
• Teflon inner core (also available interchangeably), thermal insulation and protective sheathing
• vapour diffusion-tight (protection against moisture) for reactive adhesives
• Specially designed hoses for robot applications

Feeding Pumps

Feed pumps are usually part of the melting plant, unless a system pressure (pressure tank, piston pressure on adhesive/container) is used immediately. Depending on the type of adhesive and the required delivery rate, balti can fall back on a wide range of pumps:

• Piston pumps
• Worm pumps
• Gear pumps from 0.12 cm3/rev to 50 cm3/rev to 5l/min
• Membrane pumps

Thanks to many years of experience as well as 100% in-house and continuous development, balti has a wide range of products available for almost every medium from almost water to the toughest adhesives and sealants with viscosities of up to several million mPa*s. There are also solutions to convey highly abrasive media such as adhesives filled with corundum. Gear pumps and worm pumps are driven by a wide variety of electric motors and corresponding controllers, depending on power, space conditions and control methods (pressure or speed).

Dosing Pumps

Wherever precise adhesive application in an automatic system is required, dosing pumps are used. The high-precision dosing pump, which is installed between the melting unit and the application head, delivers the adhesive in the desired quantity, pressure or volume controlled. The closer the dosing pump is to the application nozzle, the faster and more precise the regulation can be.

Thanks to its short reaction time, the precision dosing pump enables perfect adhesive application, which can also be controlled by a robot or other multi-axis systems, even speed-dependent. The start/end of an application can also be optimally dosed.

With the Dosing Pump Valve (DPV), dosing pump in the application head, balti took over a leading function in the hotmelt sector years ago, which has not been achieved until today.

Highest performance and precision at lowest possible weight!

• Dosing capacity from 1 to 20cm3/revolution or up to 1'000 cm3/min.
• Accuracy <3% guaranteed; effectively mostly <1%
• Process monitoring options for volume and pressure
• for different nozzles and application systems

Piston Dosing Feeder

Supplied by a balti melting plant and based on the balti accumulator principle, the piston dosing unit is used for stationary, non-dynamic dosing. This means that a certain amount of adhesive with a certain pressure or speed is used for filling or injecting into a cavity (see also casting). If dynamic application is used, e.g. with a robot, the dosing pump is much more suitable. This is also because it does not require a "charging cycle" and can dose for a practically unlimited time. Depending on the dosing quantity and choice of piston dosing unit, filling the piston is sufficient for one or more components. The piston stroke as well as the pressure is often monitored or even controlled.

• Piston dosing units are available from 2.5 to 100cm3 and in the pressure range up to 60 bar as standard version
• Special designs are available for very small quantities, abrasive media, etc.