residual force may linger in the plastics around the insert
residual force may linger in the plastics around the insert. The amount depends on the plastic material type, insert material, insert structure, […]
the location of the insert inside the mold
the location of the insert inside the mold must be accurate and secure, to avoid disorientation or deformation during injection molding. […]
the expansion coeficient of the material
the expansion coefficient of the materials for insert and the plastic part should be as similar as possible. It should assure that the insert does not rotate or pop out, when it is under load.
the material of insert
usually most inserts are made of metal, but other materials may also be used. of course, a insert in a plastic part still has other purposes, Some are used for electricity reasons, while others are used to improve the stability of it's shape and dimensional precision.
a metal part inserts into a plastic part
when a metal part permanently inserts into a plastic part , we call it as insert, inserts in a plastic part have various purposes. Some are used to enhance local strength, hardness, or wear of a plastic part.
The typical inserts in plastic parts
Inserts are used in plastic parts, to allow the use of fasteners such as machine screws. The advantage of this is that since these inserts are made out of metal, they are robust. Further, machine threads also allow great many cycles of assembly and disassembly, Inserts are installed using one of the following methods. [...]