Manufacturing - Injection Molding Flashcards
A-Side
The mold half that mounts to the fixed side of the molding press. Sometimes referred to as the stationary or cavity side.
Sometimes referred to as the stationary side or the cavity side.
The A-side does not contain ejector pins and therefore creates the visual part.
Source: https://www.nicoletplastics.com/resources/glossary/#:~:text=Steel%20Safe,rather%20than%20entirely%20re%2Dmachined.
B-side
The mold half that mounts to the moving side of the molding press.
Sometimes referred to as the MOVABLE or CORE side of the mold.
The B-side houses the ejector pins.
Stationary Side
A-Side
Movable Side
B-Side
Blush
Visual blemish at the point of injection in the finished part.
Cavity Side
A-Side
Core Side
B-Side
Bridge Tool
A temporary mold created to make production parts until a high-volume production mold is ready. Benefits:
- Faster time to market
- Revisions from market feedback before tool finalization.
- Generation of revenue before investing in long-term tooling.
Carbon Black
A black pigment produced by the incomplete burning of natural gas or oil.
It is widely used as a filler.
Because it possesses UV protective properties, it is also often used in molding compounds intended for outside weathering applications.
Source: https://www.nicoletplastics.com/resources/glossary/#:~:text=Steel%20Safe,rather%20than%20entirely%20re%2Dmachined.
Core
A convex feature within the mold that will enter an opposing cavity when the mold is closed.
The void between the cavity and core is the location is where the resin is injected and the component is formed.
Core-Cavity
The design of a mold in which the A-side forms the exterior of the component and the B-side forms the interior.
The advantage to this approach is that the part will shrink to the B-side where it can be ejected.
If the inside and outside are drafted with equal and opposite draft, the wall thickness will be uniform.
Coring
Removal of excess material from the cross-section of a molded part to achieve a more uniform wall thickness
Crazing
Fine cracks which may extend in a network on or under the surface or through a layer of plastic material.
Edge Gate
An injection gate on the parting line of the mold.
It typically leaves a vestige on the outside of the part and is sometimes referred to as a TAB GATE.
Edge gates often have to be manually trimmed.
Tab Gate
Edge Gates are also known as Tab Gates.
A tab gate is a gate on the parting line.
A tab gate typically leaves a vestige on the outside of the part.
Tab gates usually have to be manually removed.
