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 ?
* An electric Allrounder 470 A with a clamping force of 88 tons produced protective caps for syringes on a 48-cavity hot-runner mold. The cycle time was 4.9 seconds.
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.
Caption: A high-volume hot-runner mold with both sides cut directly into pre-hardened plates.
ton)." In addition, Nissei says, these machines are equipped with mold-temperature controller, mold inner pressure/temperature direct control system, airblow system, and valve gate (hot-runner mold)--capable interface.
The system to be shown utilizes a Boy 60 E horizontal injection press with a four-cavity, hot-runner mold with an index plate that rotates 180[degrees] to transfer injection molded preforms to the blowing station.
A well-designed hot-runner mold can reduce increments of time in each of these steps.
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.
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.