GMW GMW17991 PDF

Note: Nothing in this standard supercedes applicable laws and regulations.

Note: In the event of conflict between the English and domestic language, the English language shall take precedence.

Purpose/Material Description.

This specification covers the material requirements for vacuum-deposited metal coatings for decorative exterior plastic trim components. Physical Vapor Deposition (PVD) describes the metallizing process which gives the part a ‘metal-like’ appearance. The total coating construction requires an organic basecoat and a vacuum metallized layer. An organic topcoat is sometimes also added for additional durability or to modify appearance.

Symbols.

Not applicable.

Applicability.

Typical applications include decorative exterior trim components. Parts with a coating according to this specification can be classified into the following categories:

• Type 1:

Exterior body decorative parts where stone impact resistance is not required where the PVD is applied to the A-surface of the part.

• Type 2:

Exterior body decorative parts where moderate stone impact resistance is required where the PVD is applied to the A-surface of the part.

• Type 3:

Exterior body decorative parts where the PVD is applied to the B-surface of the part that is made from a transparent substrate, such as hard-coated polycarbonate (PC) or polymethyl methacrylate (PMMA).

Note: Type 2 systems may be used in Type 1 applications.

Remarks.

None.