3M™ Tamper Evident Label Material 7381/7866

Tamper Evident | Security Label Material | Durable Polyester

3M™ Tamper Evident Label Material 7381/7866 is designed for labeling applications where tamper resistance is important. The material is engineered to create a visible “void” indication when removal is attempted, helping identify unauthorized access or tampering. Its durable facestock and acrylic adhesive provide reliable adhesion across a variety of surfaces.

Key Features

Designed for labeling applications where tamper resistance is important.
Produces a visible “void” message when removal of the label is attempted.
Durable polyester facestock helps withstand demanding environments.
Acrylic adhesive provides strong bonding to a wide range of surfaces.
Suitable for high and low surface energy plastic substrates.
Compact void messaging allows production of small security labels.

Product Highlights

Tamper Indication

Designed to display a visible void message when removal is attempted, helping identify tampering.

Durable Facestock

Durable polyester facestock provides reliable performance for demanding labeling applications.

Strong Adhesion

Acrylic adhesive technology provides strong bonding to a variety of commonly used surfaces.

Wide Surface Compatibility

Designed to bond effectively to a range of substrates including high and low surface energy plastics.

Small Label Format

Compact void messaging supports the manufacture of small tamper-indicating labels.

Print Processing

Label materials can support various printing processes depending on the selected construction.

Specifications

Product Name	3M™ Tamper Evident Label Material 7381/7866
Product Series	7381/7866
Product Type	Tamper Evident Label Material
Primary Function	Tamper Indication
Facestock	Durable Polyester
Adhesive Type	Acrylic Adhesive
Adhesive	3M™ Adhesive 300
Tamper Message	Void Message
Surface Compatibility	High and Low Surface Energy Plastics and Various Surfaces
Label Application	Tamper Evident and Security Labeling
Printing Applications	Thermal Transfer, Digital, Inkjet, Laser and Dot Matrix Printing
Primary Benefit	Identification of Attempted Label Removal

Resources

Technical Data Sheet

View or download the technical data sheet for 3M™ Tamper Evident Label Material 7381/7866.

View TDS

Applications

Tamper Evident Labels

Suitable for applications where visible evidence of label removal or tampering is required.

Product Closures

Can be used for security and tamper indication applications including over-the-counter product closures.

Barcode Tracking

Suitable for labels used for barcode identification, tracking and product traceability.

Track and Trace

Supports labeling requirements where product identification and traceability are important.

Variable Information Printing

Suitable for applications requiring variable information and customized label printing.

Warning & Security Labels

Useful for brand, instruction, warning and security labeling applications where tamper indication is needed.