Protective Format
Protective shipping formats safeguard raw PCB core materials from physical damage and environmental contamination before fabrication. Manufacturers use core packaging to prevent the oxidation of copper cladding and the scratching of delicate dielectric surfaces during transit. These materials typically consist of vacuum sealed moisture barrier bags, desiccants, and rigid outer containers.
Handling Protocol
Cleanliness in the layup area depends on the integrity of the storage containers. When core packaging is opened, the material is exposed to humidity and dust, which can cause defects in the subsequent etching and lamination steps. Operators must verify that the humidity indicator cards inside the package remain within the acceptable range before accepting the batch into production.
If the cores absorb too much moisture, they may delaminate or blister during the high temperatures of the soldering process. Most facilities require that materials be used or resealed within a specific time window to maintain their quality.
Storage Lifecycle
Inventory management systems track the shelf life of raw laminates to ensure that the resin remains stable. Effective core packaging slows the aging process of the polymer, but it cannot stop the chemical changes entirely. Materials that have exceeded their storage duration may exhibit inconsistent thickness or poor adhesion when processed.
Labels on the packaging provide the lot number and manufacture date required for full traceability in high reliability industries.
