Nov 22, 2018
A uniform cooling of the part is important in the injection molding process in order to reduce shrinkage and warpage.
Especially in long and narrow areas, the cooling layout is often difficult.
This is because the space is insufficient to drill holes next to each other.
Therefore, when there is only enough space for one hole, it is recommended to use a baffle.
It is inserted into the hole and redirects the coolant from one side into the hole and out on the other side.
Injection Molding: The baffle consists of a drilled hole with an inserted divider plate.
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This glossary of plastic industry is provided by PLEXPERT Canada Inc.
Nov 27, 2018
A uniform cooling of the part is important in the injection molding process in order to reduce shrinkage and warpage.
Especially in long and narrow areas the cooling layout is often difficult.
The reason is insufficient space to drill holes next to each other.
When there is only enough space for one hole, it is recommended to use a bubbler.
A tube is inserted into the hole.
The coolant flows inside the tube to the end of the hole and back on the outside.
Injection Molding: The
bubbler consists of a drilled hole with an inserted tube.
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Baffle
This glossary of plastic industry is provided by PLEXPERT Canada Inc.
Mar 14, 2023
If a gate shall not be visible while using a cold runner to fill the part, the melt can be delivered into the cavity by using a cashew gate (also known as banana gate or curved tunnel gate).
The curved design of the runner makes it possible to gate on the backside of a part.
As soon as the mold is open the gate will be separated automatically.
But it needs to be kept in mind that brittle materials or fiber filled materials will break during ejecting and a small piece of material will block the channel afterwards.
Before using a cashew gate the stroke of the ejector pin as well as the type of material must be checked thoroughly.
Injection
mold: Gating through a
cashew gate
Related topics:
This glossary of plastic industry is provided by PLEXPERT Canada Inc.
Nov 29, 2018
The space between the two mold halves, which should be filled with melt, is called cavity.
The shrinkage of the material needs to be considered for the production of the cavity to get dimensionally accurate parts.
In the injection molding simulation, it is important to use the cavity size for the warpage calculation.
Feb 28, 2020
An injection mold can contain one or more cavities.
The number of cavities is often named cavity count.
In general it is considered that all the cavities are identical if we talk about cavity count.
The more cavities in one mold, the more parts can be produced at once.
Therefore production time and part costs can be reduced.
