双层标签材料，是当上层标签外观保持不变，在其背面复合一层可剥离的离型介质膜作为底层标签，在承贴物上撕起时两层标签完全分离，且不可复原，而该底层标签将会完整的保留在承贴物表面上。
Double-layer adhesive labels ，the second set of information appears when the top label layer is oeeled off. That means you only need one label for procedures such as “Blocked/Released” The removed upper label can also be stuck back on for instance, on the test documents.

产品特性

产品特性： 上层标签被揭起时，其隐藏的防伪图案将会在底层标签上显现；而底层标签仍可用于封缄或包装。 双层防伪结构较之单层降低了摩擦损耗的成本。 Product Features: A Hidden messages will appear on the bottom layer if the top layer is peeled away, while the bottom layer can also be used to seal box corner or other packaging. Double-layer construction reduces total application and removal costs versus single Layer protection films. Individual layers are easily removed using special tool. Thick polyester film construction prevents typical scratches from affecting layers below.