Eastman Chemical Company and Prestige Mold Incorporated have collaborated to create a first-of-its-kind multi-cavity hot-runner mold
for producing intricate medical parts.
An electric Allrounder 470 A with a clamping force of 88 tons produced protective caps for syringes on a 48-cavity hot-runner mold
Now let's consider best practices for heating/cooling the hot-runner mold
sequentially and not creating a large temperature difference inside the mold that could result in losing the manifold seal.
A well-designed hot-runner mold
can reduce increments of time in each of these steps.
The nozzle orifice on a hot-runner mold
should be the same size or only slightly smaller than the hot-sprue-bushing orifice.
For example, a 48 + 48 stack mold can run in a 200-ton press and produce 96 bortle closures every 3 sec, or almost 3 million per day, making it 30% more cost-efficient than a conventional 96-cavity hot-runner mold
New Even Cool software from Gammaflux provides a reliable way to cool down the hot-runner mold
and prevent material leaks.
Most of these companies subcontract to other suppliers for the label magazine, hot-runner mold
, robot, and automation system, while some have developed and patented their own components.
This procedure applies to hot-runner molds
but can be easily extended to valve-gated molds.
While hot-runner molds
are more expensive than conventional molds, the economics for large operations are favorable because cycle time is reduced.
As explained previously, burns in hot-runner molds
can be very misleading.
Another common source of bubbles is too much decompression, especially in hot-runner molds