Tamper-Evident Security Bag Tape

Zhejiang Zhuolv New Materials Co., Ltd. is one of the leading manufacturers and suppliers of tamper-evident security bag tape in China, also supports customized service. If you're going to buy bulk durable tamper-evident security bag tape, welcome to get pricelist and free sample from our factory. Quality products and reasonable price are available.

Tamper-Evident Security Bag Tape is a functional sealing tape for plastic security bags that require visible evidence after opening or tape removal. A security layer within the tape produces a visible message, pattern or surface change when the sealed area is disturbed.

The construction typically combines PET film, a security layer, pressure-sensitive adhesive and release liner. Tape specifications can be matched to PE and PP bag films, sealing flap dimensions and manual or automated application. Security messages, tape width, roll length, color and printed information can also be specified.

Product Function
Tamper Indication
The security layer creates a visible change when the tape is peeled or disturbed. Common indications include VOID, OPENED and transfer-style effects.
Bag Closure
The adhesive layer provides the bond between the tape and bag surface. Adhesive selection is matched to the film structure and sealing area.
Seal Identification
Security wording, color and printed information provide a clear visual reference for the sealed area and support package identification during handling.

Typical Applications
Security Bags
Used on controlled-access bags where the condition of the closure needs to remain visually identifiable.
Courier & Document Bags
Suitable for PE or PP mailing bags used for documents, records and controlled paperwork.
Evidence Bags
Applied to selected evidence and specimen bags where the seal condition needs to be checked during handling and storage.
Cash & Valuables Bags
Used for deposit bags and selected valuable-item packaging where visible tamper indication forms part of the closure.

Material & Construction
PET Film
PET provides a stable carrier for the functional layers and supports controlled coating, slitting and tape application.
Security Layer
The security layer determines how the tamper message or visual indication appears after tape removal. Construction can be selected according to the required security effect.
Adhesive
The pressure-sensitive adhesive is selected for the target bag film and required closure performance. PE and PP compatibility should be confirmed using the actual film structure.
Release Liner
The liner protects the adhesive before application and provides controlled release during bag production and sealing.

Key Specifications

Selection Guide
Bag Film
Identify the bag material first. PE, PP and other flexible films can have different surface characteristics that affect adhesive selection.
Sealing Area
Measure the available sealing flap and bonding width. Tape width should provide sufficient contact with the intended closure area without interfering with the bag structure.
Application Method
Manual sealing places greater importance on liner handling and application control. Automated production requires matching roll width, core size, winding and feed requirements.
Security Effect
Select the visual indication according to the application. VOID, OPENED and transfer-style constructions produce different visual results after the tape is removed.

Manufacturing & Quality Control
Layer Coating
Adhesive and functional layers are applied according to the approved construction. Coating control supports consistent layer distribution across the working width.
Slitting
Master rolls are converted into specified widths and roll lengths. Slitting controls include finished width, edge condition and winding condition.
Dimensional Inspection
Finished rolls are checked for width, length, core size and visual condition against the approved specification.
Security Verification
Samples are applied to the specified bag substrate and checked for the required tamper indication after removal or disturbance.

Customization Options
Tape Dimensions
Width and roll length can be specified according to the sealing flap, bag format and production requirements.
Security Message
VOID, OPENED and customer-defined security wording can be incorporated according to the selected tape construction.
Printed Information
Identification text, numbering, graphics or other approved artwork can be included according to the required print format.
Tape Color
Clear, white, red and other colors can be selected according to product identification and bag design.

Procurement Checklist
Bag Specification
Provide the bag film, film thickness, sealing flap dimensions and bag format.
Tape Specification
Confirm tape width, roll length, core size, color and required security message.
Production Method
State whether the tape will be applied manually or through an automated bag production process.
Order Information
Provide estimated order quantity, packaging requirements and any approved artwork for customized tape.
Sample Evaluation
A bag sample or film specification allows adhesive compatibility, tape dimensions and tamper indication to be evaluated against the intended application.

FAQ
What bag films can be used with this tape?
The tape is commonly specified for PE and PP security bags. Final adhesive selection should be confirmed against the actual film structure.
What tamper-evident messages are available?
VOID and OPENED are common security messages. Custom wording and security graphics can be specified according to the selected construction.
What tape widths are available?
Typical widths range from 12 to 100 mm. The required width depends on the sealing flap and available bonding area.
Can the tape be supplied for automated bag production?
Yes. Roll width, core size, roll length, winding and liner specifications can be matched to the production process.
What information is required before ordering samples?
The key information includes bag material, film thickness, sealing flap size, tape dimensions, application method, security effect and estimated quantity.