How to solve IML process problem

In mold labeling process is mature technology. This article aims to introduce how to solve IML process problem which is common.

1.     Deformation
IML process is combining with injection molding. And the material of label and the shrinkage of label will also plays an important role in IML molding. If the label shrinkage is huge difference like part shrinkage, the container or cup will also shrink so that the deformation problem comes.
Solution: To choice suitable label material for IML part. The shrinkage rate need close to PP material shrinkage.

2.     Air bubbles
If mold design structure is not reasonable, it is easy to cause IML labeled part deformation, air venting problem so that the air bubbles comes out.
Solution: the designers need rich experience in IML mold drawings which need consider all related effecter things. IML mold could adopt slide inserting structure which is better for air venting. Besides, the label size also needs carefully considering. If not, when the robot put label into mold inside, the pressure and cooling also will cause air bubbles problem.

3.     Same label stick twice or more
IML robot through static sticks the label. If the static is too strong, the robot will pick more labels,
Solution: adjust IML robot static.

More questions regarding to how to solve IML process problem, welcome to contact email: sino6001@sinomould.com