An electric Allrounder 470 A with a clamping force of 88 tons produced protective caps for syringes on a 48-cavity hot-runner mold
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.
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.
But what happens when we're testing a hot-runner mold
or a cold-runner mold with oversized gates?
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.
I once started up six brand-new hot-runner molds
with six brand-new controllers.
In hot-runner molds
, adjusting the nozzle or tip temperatures is the most common practice.
While hot-runner molds
are more expensive than conventional molds, the economics for large operations are favorable because cycle time is reduced.