Tamper-Evident Shipping Bag Tape

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

Tamper-Evident Shipping Bag Tape is a security sealing tape for PE and PP shipping bags, poly mailers, courier bags, apparel bags and document mailers. It provides a visible indication when the sealed area is opened or the tape is removed.

A typical construction combines a film carrier, security layer, pressure-sensitive adhesive and release liner. Common specifications include 10–50 mm tape width, 50–100 μm total thickness and 500–2,000 m roll length. Construction is selected according to bag material, flap dimensions and application method.

Product Construction
Film Carrier
A 12–50 μm film carrier provides the base for the functional layers. Carrier selection is coordinated with the required tape thickness, converting process and finished roll format.
Security Layer
The security layer creates the visible indication after seal disturbance. Available effects include message reveal, pattern change and surface transfer.
Pressure-Sensitive Adhesive
The adhesive bonds the tape to the bag film. Formulation selection takes into account PE or PP substrate, surface condition and application requirements.
Release Liner
A 30–80 μm release liner protects the adhesive before use and controls tape release during application.

Key Specifications

Shipping Bag Applications
Poly Mailers
The tape fits flexible PE or PP mailers where the sealing flap requires a defined tamper indication.
Courier Bags
Roll dimensions and tape width can be matched to courier bag flap geometry and the selected sealing process.
Apparel Bags
The tape provides a narrow sealing format for flexible garment packaging while maintaining a visible security feature.
Document Bags
The security indication allows the seal condition to be checked during storage, handling and delivery.

How to Select the Tape
Check Film Type
Confirm PE, PP or another approved film before selecting the adhesive system. Film surface characteristics affect the final bond.
Set Tape Width
Choose the width according to the available flap area. Typical widths of 10–50 mm cover common shipping-bag sealing configurations.
Define Security Effect
Specify the required visual indication before production. Message reveal, pattern change and surface transfer provide different visual results.
Match Application Method
Manual and automated application can require different roll lengths, core sizes and release characteristics. The application process should be confirmed during specification review.

Manufacturing Considerations
Layer Coating
Functional coatings are applied to controlled thickness ranges. Coating uniformity is monitored during production to maintain consistent layer structure.
Lamination
The carrier, security layer and adhesive construction are combined under controlled web tension and alignment.
Slitting
Master rolls are slit into the specified widths. Edge condition, roll width and winding accuracy are checked during conversion.
Roll Winding
Finished rolls are wound to the specified length and core diameter. Roll tension is controlled for stable dispensing during bag production.

Quality Control Points
Dimensional Check
Tape width, total thickness, roll length and core diameter are measured against the approved specification.
Adhesion Check
Bond performance is evaluated on the specified PE or PP film using defined test conditions.
Security Check
The selected visual effect is checked for clarity and consistency across sampled rolls from the production batch.
Roll Inspection
Winding condition, edge quality, liner release and visible surface defects are inspected before final packing.

Customization Options
Tape Dimensions
Width from 10–50 mm, total thickness from 50–100 μm and roll lengths from 500–2,000 m can be configured according to the sealing design.
Security Effect
Message, pattern and surface-change effects can be specified for different shipping bag formats.
Adhesive System
The adhesive construction can be selected according to PE or PP film and the intended application conditions.
Roll Format
Core diameter, roll length and packaging format can be aligned with manual dispensing or automated bag production.

Procurement Information
Bag Details
Provide the film material, film thickness, flap width and bag dimensions.
Tape Details
Specify tape width, total thickness, roll length, core diameter and required security effect.
Production Method
State whether application is manual or automated and provide the available dispensing or sealing conditions.
Order Requirements
Estimated order quantity, packaging requirements, labeling information and delivery schedule support production planning.
A bag sample or existing tape sample can be reviewed when substrate compatibility or security-effect matching requires confirmation.

FAQ

What bag materials can this tape be used on?
The tape is commonly specified for PE and PP shipping bags, poly mailers, courier bags, apparel bags and document mailers.
What tape widths are available?
Typical widths range from 10–50 mm. The final width is selected according to the sealing flap and application area.
What roll lengths are available?
Common roll lengths range from 500–2,000 m. The final length can be matched to the dispensing process and production volume.
How does the tamper-evident effect work?
The security layer creates a visible message, pattern change or surface indication when the sealed area is opened or the tape is removed.
Can the tape be customized for PE and PP bags?
Yes. Tape width, thickness, carrier, security layer, adhesive, liner, roll length and security effect can be specified for the intended bag construction.
What information is needed before ordering?
The main requirements are bag film, film thickness, flap dimensions, tape size, security effect, application method, roll format and estimated quantity.