Tamper-evident bag tape: Custom security tape, UK manufactured

Protectaseal manufactures tamper-evident bag tape to your exact specification — from standard VOID mechanism tape to fully bespoke formulations with custom printing, and covert and overt security features.

Assortment of Protectaseal tamper-evident bag tape products

Tamper-evident bag tape: Built for the demands of your industry

Our tamper-evident bag tapes are engineered to provide immediate, irrefutable evidence of interference. When the tape is removed or disturbed, a clear VOID or custom security message is revealed on the substrate — impossible to disguise, impossible to replace without detection.

Unlike bag tape sold by distributors, our bag tape is manufactured in-house in the United Kingdom. That means we control the adhesive compound, the substrate specification, the print quality, and the security mechanism — and we hold your custom specification in strict confidence.

Our bag tape product range

Stock VOID tape

Standard tamper-evident tape with VOID or OPEN VOID message on removal. Available in a range of widths, roll lengths, and colours. Suitable for documentation, forensics, medical, and cash-in-transit applications.

Custom printed security bag tape

Bespoke bag tape printed with your brand, logo, security message, or unique identifier. Manufactured to your colour specification. MOQ and lead time on application. Ideal for branded packaging, cash-in-transit, and product authentication.

UV reactive security bag tape

Bag tape incorporating ultraviolet ink features that are invisible to the naked eye and only visible under UV illumination. Used as a covert authentication layer in high-security applications.

Taggant Reactive Bag Tap

Bag tape incorporating a unique identifier that is invisible to the naked eye. It provides machine readability that can be used for process control, content verification, and ongoing protection.

Supreme Bag Tape

Since each end-user of bag tape has a specific requirement, we prefer not to use the commonly used generic Level 1 to 6 grading system for tamper-evident bag tapes. Our Supreme Bag Tape is manufactured to your unique requirements to achieve the exact end result you require.

What sets Protectaseal apart

Blue tamper-evident bag tape showing cold manipulation security evidence
In-house manufacturing

In-house manufactured adhesive compounds include both acrylic and hot melt derivatives. Any adhesive specification developed in conjunction with yourself is not available to competitors.

Custom messaging

Custom VOID messaging — your brand, your security message. .

Substrate options

Multiple substrate options to suit your conversion process.

Bespoke dimensions

Bespoke width and roll lengths — manufactured to your operational requirements, not standard catalogue sizes.

These include unique identifiers, thermochromic inks, internal security cuts, water-soluble inks, UV-reactive inks, authentication, and anti-diversion features.

Secure manufacturing facility

Manufactured in a secure UK facility — chain of custody from raw materials to dispatch.

Tamper-evident tape applied to a forensic evidence bag

Where our bag tape is used

Protectaseal tamper-evident bag tape is specified by procurement and quality assurance teams across banking, cash handling, duty-free, pharmaceutical manufacturing, education, and forensics. Our bag tapes are available through our approved global distributor network.

Want to know more about our bag tape? We've got answers!

Blue tamper-evident bag tape being processed on manufacturing equipment
What is tamper evident bag tape?

Tamper-evident bag tape is a security tape that reveals a visible message, typically "VOID" or "OPEN VOID", when removed from the bag. The message is permanently transferred to the substrate, making it impossible to reseal the package without detection.

Can I have my logo printed on the tape?

Yes. We manufacture custom-printed security tape with your brand, logo, security message, unique identifiers, and Pantone-matched colours. Minimum order quantities and lead times are available on application.

What type of substrate does tamper evident bag tape work on?

Our bag tape is available in multiple adhesive compound specifications designed for different substrates, including conventional plastics, engineered plastics, and paper. Our technical team can advise on the right compound for your specific surface and operating temperature range.

What is UV-reactive security bag tape?

UV-reactive bag.tape incorporates ultraviolet ink features — text, logos, or patterns — that are invisible to the naked eye and only visible under UV illumination. This adds a covert authentication layer for high-security applications.