Hasco offers Z3240 with valve gate

Hasco's Compact Shot Z3210 series, which has been proven in manifold applications and enables small installation spaces, has been extended with a variant Z3240 with valve gate.

Internal gate positions in long and narrow articles or narrow pitch centres can be achieved with the process reliability of a valve-gate solution.

The needle valve is claimed to guarantee optimum post-pressure transmission and to avoid stringing and poor gate quality.

The fit diameter of the front nozzle tip measures 7mm, with a 14mm-diameter hole over the body length.

Lengths are available up to 180mm, making this nozzle suitable for gate locations in restricted areas of the article.

The Z3240 is particularly suitable for processing polyolefins and styrenes in a shot weight range of between 2g and 20g.

With a homogeneous temperature profile and high-pressure resistance, other plastics can also be processed.

The nozzle is offered in two different designs: one variant for standard assembly; and one for front assembly, in which the nozzle can be changed completely on the machine.

As a result of the design of the nozzle tip, a needle valve stroke of 3mm is required and the tip remains in the guide throughout the entire stroke.

The wear on the needle guide is, therefore, reduced to an absolute minimum, the life of the gate prolonged and expensive repairs to the inserts avoided.

The needle consists of an easily replaceable standard ejector, Z40/1,5x, which is mounted floating in the plate package with a special holder to compensate the heat expansion of the hot runner.

This reduces the radial load of the needle to a minimum and prevents the needle breaking.

The preferred needle drive is by a plate package that is controlled by the cylinder Z2370, which can be actuated hydraulically or pneumatically.

This cylinder is connected to the drive plate package via the adapter provided.

In addition to a long-lasting heater, it is claimed that high-quality materials are used for the nozzle body, needle, needle guide and drive components.

The standardisation of the nozzle series is intended to guarantee optimum availability of the spare and wear parts through the global Hasco service network.

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