FMV02 • FMV12 • FMV22 • FMV32 • FMV0E

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Application

The tamper-indicating mechanism (i.e. the “void” message both on the facestock and

on the substrate) depends upon adequate adhesion of the label to the substrate. A

sufficient bond may not develop on all surfaces due to low surface energy (e.g. PTFE),

contaminated or textured surfaces. Therefore, it is important to determine the

suitability of the product in the intended application by carefully pretesting. The

primary function of the products is to effect a non-transferable (non-reusable) label

seal by causing the “void” message to appear on the facestock when removal from the

substrate is attempted. As a result of the primary function, a “void” message is also

transferred to the substrate and can be removed by hand rubbing or by solvent wiping.

Our tamper-indicating product line is designed to indicate tampering by destructing

when an attempt is made to remove the label. Since no tamper-indicating feature is

100% tamper proof, careful consideration must be taken when designing label seals.

When the consequences of tampering could be severe, such as injury or loss of human

life or significant monetary loss, these products are not recommended as the sole

means of package or product tamper indication. In these instances, additional methods

in combination with the labels should be considered so that the tamper-indicating

features are commensurate with the requirements of the application.

Die-Cutting

(13 mm x 32 mm).

It is recommended that the user test for the presence of the “void” message on every

roll of label seals as they process them, to insure the product quality and consistency.

Which can be done by laminating a label seal to an untreated polyester film test surface.

The label seal should be wiped down with a squeegee, allowed to dwell 10 minutes, and

then removed to observe the presence and functions of the “void” message on both the

facestock and the substrate. It is also recommended that the user test each lot of label

seals on the actual application surface to assure the function of the “void” message.

Dispensing

As care should be taken not to disturb the tamper-indicating feature by pre-destructing

the “void” message when manually removing the label from the liner, slowly remove the

liner from the label at a 90° angle. It is recommended that the user test samples for each

roll of label seals by laminating a representative label seal to the specific application

surface to assure its function meets expectations. This test can be run after 10 minutes

dwell; however, final judgement should be based on 72 hours dwell at room temperature

prior to testing.

Application Ideas

• Tamper-indicating labels and seals for packaging applications.

• Non-transferable durable goods label.