hot-runner mold

hot-runner mold

[′hät ‚rən·ər ′mōld]
(engineering)
A plastics mold in which the runners are kept hot by insulation from the chilled cavities.
References in periodicals archive ?
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.
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.