Material mismatch
Layers may have inadequate chemical or thermal compatibility, preventing reliable bonding.
Process variation
Temperature, pressure, dwell time, alignment or cooling can move outside the qualified window.
Prevention
Control storage, surface cleanliness, layer orientation, equipment settings and adhesion tests against an approved construction.
Scope note
This guide covers legitimate material selection and credential manufacturing principles. It does not describe how to copy or bypass the security of any real government credential.
Related materials and technologies
Continue with driver license card materials, overlay films, the security features overview, or the security technology library.