Tamper Proof Bag Sealing Film is designed for HDPE security bags, courier bags, cash bags, evidence bags, forensic bags, confidential document pouches, and high-value transport packaging. Hanksec supports custom VOID messages, serial numbers, barcodes, QR codes, warning text, heat or cold indicators, water-sensitive effects, roll width, and OEM/ODM security bag sealing film development.
If you have any questions about our products and service,please feel free to leave us a message
Tamper Proof Bag Sealing Film is designed for manufacturing security bags, courier bags, cash bags, evidence bags, forensic bags, confidential document pouches, airline security bags, medical sample bags, and high-value transport bags. It provides visible opening evidence when the bag is peeled, opened, resealed, or attacked during transport and handling.
Unlike ordinary bag sealing tape, tamper proof bag sealing film is engineered as part of the bag closure system. It can reveal VOID, OPENED, custom warning text, color change, serial number, barcode, or other anti-tamper evidence depending on the required security level and final bag application.
Tamper Proof Bag Sealing Film uses a multi-layer structure that may include face film, hidden message layer, release coating, adhesive system, color layer, heat-sensitive layer, cold-sensitive layer, or water-sensitive coating. After the film is applied to the bag structure, it forms a security closure that cannot be opened cleanly without leaving visible evidence.
When the sealed bag is opened or attacked, the hidden security layer reacts. The film can show a VOID message, OPENED message, residue pattern, color change, tearing evidence, or other irreversible tamper indication. This helps inspectors, bank staff, courier teams, forensic officers, and warehouse operators identify unauthorized access quickly.
Tamper proof bag sealing film is recommended when customers need a security closure material for bag production rather than a finished label only. It is suitable for bag manufacturers who produce security bags in roll-to-roll, sheet, or automatic bag-making processes.
For HDPE, LDPE, PE, co-extruded film, courier bag film, and plastic mailing bag applications, the sealing film must match the bag substrate, adhesive bonding requirement, printing process, sealing line, roll tension, and production speed. Hanksec can support sample testing and OEM development according to the customer’s bag structure and final security requirement.
Tamper Proof Bag Sealing Film is commonly used for bank deposit bags, cash transport bags, police evidence bags, forensic sample bags, customs inspection bags, courier security bags, airline security bags, confidential document pouches, medical sample bags, and high-value logistics packaging.
For evidence and forensic applications, the film helps support visual chain-of-custody control. For banking and cash handling, custom serial numbers and barcodes can improve traceability. For courier and logistics packaging, visible tamper evidence helps reduce disputes caused by unauthorized opening during shipment.
Hanksec can customize tamper proof bag sealing film according to bag material, film width, adhesive system, hidden message, tape color, printing layout, release liner, security level, barcode format, sequence number style, and production process.
Common customization options include VOID, OPENED, ABIERTO, custom logo, warning text, variable serial numbers, QR codes, barcodes, water-sensitive indication, heat indication, cold indication, solvent-sensitive effect, twin seal design, easy tear strip, and writable area design.
Standard bag sealing tape mainly provides basic closure. Once the bag is opened and resealed, visible evidence may not be strong enough. Tamper Proof Bag Sealing Film is designed to show irreversible evidence when the bag closure is attacked.
For ordinary mailing bags, standard sealing tape may be enough. For security bags, cash bags, evidence bags, confidential envelopes, and high-value logistics packaging, tamper proof bag sealing film provides stronger inspection value and better protection against unauthorized access.
Tamper Proof Bag Sealing Film must be tested with the customer’s real bag-making process. Important converting factors include roll width, roll tension, adhesive release, heat sealing temperature, bag film compatibility, cutting position, printing registration, liner removal, and machine running speed.
For large-volume security bag production, stable material performance is very important. Hanksec can provide sample testing support to help customers confirm adhesive bonding, hidden message effect, roll stability, printing compatibility, and final sealing performance before bulk production.
Before mass production, customers should test the sealing film on the real bag material. HDPE, LDPE, PE, co-extruded film, laminated film, recycled plastic, coated film, and printed bag surfaces may show different bonding and tamper evidence performance.
Important testing points include peel adhesion, VOID message clarity, heat response, cold response, water-sensitive reaction, solvent resistance, barcode readability, serial number accuracy, liner release force, machine stability, and final bag sealing strength.
Hanksec HDPE Tamper Evident Bag Sealing Film is specially developed for manufacturing security bags, courier bags, cash bags, evidence bags, duty-free bags, and confidential document pouches. Once the sealing area is opened, a hidden security message will be clearly revealed, providing irreversible evidence of unauthorized access.
| Item | Specification |
|---|---|
| Material | PO Security Film |
| Security Level | Level 2 Tamper Evident |
| Hidden Message | VOID / OPENED / Customized |
| Film Thickness | 20-80 Microns |
| Adhesive Type | Permanent Hot Melt / Acrylic |
| Adhesion Strength | Customized According to Application |
| Film Color | White, Blue, Red, Yellow, Transparent or Custom |
| Printing | Logo, Text, Barcode, Serial Number |
| Release Liner | Glassine Paper or Customized |
| Roll Width | Customized |
| Roll Length | Customized |
| Operating Temperature | -20°C to 80°C |
| Shelf Life | 12 Months |
A hidden VOID or OPENED message becomes visible immediately after any attempt to open the package.
Engineered for HDPE, LDPE, PE bags, courier bags, and plastic mailing bags.
Support for custom logos, hidden texts, serial numbering, barcodes, and tracking systems.
Provides visible evidence against peeling, resealing, lifting, and unauthorized opening attempts.
Suitable for automatic security bag production lines and high-speed bag-making machines.
Available with Level 3, Level 4, Level 5, and Level 6 security structures depending on security requirements.
As one of China’s leading tamper evident material manufacturers, Hanksec provides complete OEM and ODM solutions from security film coating, security message design, adhesive development, slitting, and converting.
✔ Direct Factory Supply
✔ Custom Security Message Development
✔ Low MOQ Available
✔ Fast Sample Production
✔ Stable Quality Control System
✔ Global Export Experience
✔ Security Bag Material Specialist
Contact Hanksec today for free samples and professional security packaging recommendations.
Customers can also explore related Hanksec materials, including tamper evident security tapes, non-transfer VOID security tapes, VOID label materials, destructible label materials, and tamper evident security products.
For Tamper Proof Bag Sealing Film, customers often evaluate peel adhesion, hidden message clarity, bag film bonding, barcode readability, serial number traceability, and transport packaging performance. Useful external references include ASTM D3330 peel adhesion testing, PSTC pressure-sensitive tape test methods, GS1 barcode standards, and ISTA package testing procedures.
Standard Samples: Hanksec provide free samples, but we require your courier account (e.g., FedEx, DHL or UPS) for shipping. If you don’t have an account, the shipping cost will be borne by you.
Custom Samples: If mold creation or special processing is required, corresponding mold costs or sample fees will be charged.
For products requiring customization from rolls, standard MOQs ensure efficiency. However, please feel free to contact us to discuss – we can find the best solution based on our current stock.
Hanksec leveraging our mature production system and raw material inventory, we provide clear and efficient delivery timelines for orders of all scales:
Samples: Standard samples are dispatched within 1-2 working days for quick decision-making.
Small/Medium Batches: The standard lead time is 3-5 working days for rapid response.
Mass Customization: For complex mass production (7-20 working days), we precisely coordinate resources to ensure on-time delivery.
Hanksec to ensure a smooth collaboration, our process is designed for clarity and efficiency. Your key involvement is as follows:
Step 1: Provide Requirements – Please share detailed requirements including applied surfaces, how to use and so on.
Step 2: Receive Quotation – We will prepare a customized quotation for you according to your exact requirements.
Step 3: Approve Samples – Verify samples to ensure they fully meet your expectations.
Step 4: Confirm Order – Sign the Proforma Invoice (PI) to formalize the order.
Step 5: Pay Deposit – Production commences immediately after we receive the deposit.
Step 6 & 7: Production & Shipping – Handled efficiently by us.
Step 8: Receive Support – We continue to provide support after the transaction. We are here whenever you need us.
Hanksec offer comprehensive customization solutions across the following ten aspects to meet your branding and security needs:
Size: Customized to any specification based on the application.
Color: Precisely matched by providing a Pantone color code.
Film Thickness: Various options available to suit different durability requirements.
Hidden Messages: Covert text, images, or patterns can be embedded.
Thermochromic Ink: Special ink that changes color or disappears with heat.
UV Ink: Hidden graphics revealed under ultraviolet light.
Holographic Effect: Customized dynamic visual holograms.
Barcode or QR Code: Integrated variable data for traceability and marketing.
Serial Numbers: Unique identification for each item.
Perforated Receipts: Easy-to-tear stubs for warranties or loyalty programs.
Hanksec Thanks to a special top coating on our materials, our tamper-evident substrates are highly compatible with almost all mainstream printing methods, including:
Thermal Transfer Printing
Screen Printing
Rotary Printing
Offset Printing
Hanksec equipped to handle a variety of International Commercial Terms (Incoterms) and can recommend the most suitable option based on your logistics control. Our professional team ensures clarity and reliability from the factory to the final destination.
EXW (Ex Works): The buyer bears all transportation processes and costs.
FOB (Free on Board): The seller is responsible for delivering the goods on board the vessel at the port of shipment; risk transfers to the buyer thereafter.
CNF/CFR (Cost and Freight): The seller pays for freight to the port of destination, but insurance is the buyer’s responsibility.
CIF (Cost, Insurance and Freight): The seller covers freight and insurance to the port of destination.
Hanksec provide flexible logistics solutions based on order volume:
For Small Trial Orders: Typically shipped via international express (e.g., FedEx, DHL, UPS) or by air for timeliness.
For Large Volume Orders: Shipped by sea for cost-effectiveness or by air for speed, according to your requirements.
Hanksec pleased to offer complimentary professional design and modification services to ensure your artwork is perfectly adapted for our production processes.
To guarantee print quality and production efficiency, we strongly recommend submitting editable vector files in the following formats:
Adobe Illustrator (.ai)
CorelDRAW (.cdr)
PDF (with all fonts outlined or embedded)
Our design team will optimize based on your initial draft, ensuring a seamless transition from design to final product.
If you have any questions about our products and service,please feel free to contact us!
English 
Spanish 
Russian 
French 
German 
Portuguese 
Italian 
Arabic 
Turkish