Tamper Proof Bags are designed for cash, documents, evidence, medical samples, courier packages, customs inspection, warehouse transfer, and high-value security packaging. They provide visible tamper evidence and support sequence number, barcode, QR code, writable surface, easy tear strip, twin seal, reinforced side sealing, custom logo, warning text, bag size, film thickness, and OEM/ODM security bag production.
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Tamper Proof Bags are designed to protect valuable items, cash, confidential documents, evidence, samples, transport records, and high-value products during storage, handling, delivery, and inspection. Once the bag is sealed, any unauthorized opening, lifting, resealing, cutting, heating, or manipulation can leave visible evidence.
Compared with ordinary plastic bags, tamper proof bags provide stronger security control through tamper evident closure, sequence number, barcode, writable surface, reinforced sealing, easy tear strip, and customized warning text. They help users reduce package disputes, improve traceability, and protect the integrity of the contents during the whole handling process.
Tamper Proof Bags use a security closure system that reacts when someone tries to open or manipulate the sealed area. Depending on the selected structure, the closure can show VOID messages, OPENED messages, adhesive transfer, film damage, color change, broken sealing patterns, or other irreversible tamper evidence.
Each bag can also be printed with a unique sequence number, barcode, QR code, writable information area, detachable receipt, or customer logo. These features help banks, logistics companies, laboratories, police departments, couriers, and warehouse teams record, track, verify, and inspect every bag more efficiently.
Tamper proof bags are useful when customers need more than simple packaging. They provide visible evidence if the package has been opened or manipulated before delivery. This helps reduce disputes, prevent unauthorized access, improve handover control, and support chain-of-custody management.
For B2B buyers, security packaging distributors, courier companies, banks, laboratories, and government projects, Tamper Proof Bags provide a practical solution for secure storage, controlled transport, and traceable inspection.
Tamper Proof Bags are commonly used for cash deposit bags, bank bags, courier security bags, confidential document bags, evidence bags, forensic sample bags, medical sample bags, customs inspection bags, airport security bags, retail cash bags, warehouse transfer bags, and high-value logistics packaging.
For banks and cash handling, the bag helps protect money during collection, storage, and transport. For evidence or sample handling, it helps maintain package integrity. For courier and logistics applications, it helps reduce disputes caused by unauthorized opening, product switching, or package replacement.
Ordinary plastic bags mainly provide basic containment and transport convenience. They usually cannot show clear evidence if opened and resealed. Tamper Proof Bags are different because they are designed to reveal visible evidence when unauthorized opening is attempted.
If the customer only needs basic packaging, ordinary plastic bags may be enough. If the package contains cash, evidence, documents, samples, confidential files, or valuable goods, tamper proof bags provide a stronger and more professional security solution.
Evidence security bags are usually designed for police, forensic, and laboratory chain-of-custody applications. Tamper Proof Bags cover a wider range of security packaging needs, including banking, logistics, retail, documents, medical samples, and general high-value transport.
For evidence handling, customers can choose a more specialized evidence bag structure. For general secure packaging, cash handling, courier transport, and confidential document transfer, tamper proof bags offer flexible customization and broader application coverage.
Hanksec can customize Tamper Proof Bags with different functional features according to the customer’s security level and application. Common options include thermochromic tape, tamper evident closure, easy tear strip, sequence number, multi-directional barcode, twin seal, reinforced side sealing, writable surface, detachable receipt, and custom printed warning messages.
These features help users improve security inspection, reduce unauthorized access, simplify internal tracking, and maintain a clearer record during storage, transport, and handover.
Hanksec can customize Tamper Proof Bags according to bag size, film thickness, bag color, closure structure, sealing strength, printing layout, barcode type, sequence number format, QR code, writable surface, tear strip position, and final application requirement.
Common customization options include customer logo, warning text, serial number, barcode, QR code, transparent window, opaque film, reinforced side seal, twin seal, easy tear strip, writable area, thermochromic indication, and private security design.
Before bulk production, customers should test the complete tamper proof bag structure under real application conditions. Important testing points include sealing strength, tamper evidence clarity, barcode readability, sequence number accuracy, writable surface performance, tear strip function, side seal strength, film thickness, and final bag usability.
Storage temperature, handling pressure, film material, closure design, printing method, barcode size, and transport conditions can all affect final performance. Sample testing is recommended before confirming large-volume OEM or ODM production.
A security bag is designed to protect valuable items, documents, cash, samples and confidential materials during storage, transportation and handover. Compared with ordinary plastic bags, security bags require clear tamper evidence, reliable sealing strength, traceable identification and easy handling for authorized users.
Hank Security security bags can be customized with multiple functional features, including thermochromic tape, tamper evident closure, easy tear strip, sequence number, multi-directional barcode, twin seal structure, reinforced side seals and writable surface. These features help users improve security control, reduce unauthorized access and maintain a clear chain of custody.
Thermochromic tape provides an additional security layer against heat-based tampering.
When someone tries to use hot air, heat or other thermal methods to open the bag without obvious damage, the thermochromic security layer can show a visible change or warning mark. This helps inspectors identify possible heat tampering attempts more easily.
This feature is especially suitable for high-security applications such as cash bags, evidence bags, confidential document bags, banking bags and high-value product transportation.
The tamper evident closure is the core security feature of a security bag.
Once the bag is sealed, any attempt to open, lift, remove or reseal the closure will leave visible tamper evidence. Depending on the security design, the closure can show VOID messages, security patterns, adhesive transfer, film damage or other clear warning signs.
This helps users quickly check whether the bag has been opened or manipulated after sealing.
The easy tear strip allows authorized users to open the security bag quickly and cleanly without using scissors, knives or other tools.
This design improves user convenience while keeping the tamper evident closure secure before final opening. It also helps prevent random cutting, which may affect inspection, record keeping or evidence preservation.
Easy tear strip is a practical feature for courier bags, document bags, medical sample bags, evidence bags and daily secure handling applications.
Each security bag can be printed with a unique sequence number for item-level identification and traceability.
The sequence number allows every bag to be recorded, tracked and verified during packing, storage, transportation and final delivery. It helps users build a clear chain-of-custody record and reduce the risk of replacement, loss or dispute.
This feature is widely used for cash handling, bank deposit bags, evidence storage, confidential documents, logistics and sample management.
Multi-directional barcode printing allows the security bag to be scanned from different angles during sorting, storage, delivery and verification.
This improves scanning efficiency, reduces manual input errors and supports better digital tracking throughout the whole handling process.
It is especially useful for logistics companies, banks, laboratories, government departments, courier services and organizations that require fast and accurate bag identification.
The twin seal structure uses two sealing areas to improve closure strength and security performance.
Compared with a single sealing structure, twin seal design provides stronger protection and makes unauthorized opening more difficult. It helps create a more reliable sealing effect during transportation, storage and repeated handling.
This feature is suitable for applications that require higher sealing strength, such as cash transportation, confidential documents, evidence storage, banking operations and high-value goods delivery.
Customers interested in Tamper Proof Bags can also explore level 4 tamper evident security bags, evidence security bag, cash deposit bag tape, jumbo roll security bag tape, and tamper evident security packaging tapes guide.
For Tamper Proof Bags, customers often evaluate sealing strength, tamper evidence clarity, barcode readability, sequence number durability, writable surface performance, transport packaging reliability, and chain-of-custody control. Useful external references include GS1 barcode standards, ISTA package testing procedures, NIJ evidence management resources, and ASTM D3330 peel adhesion testing.
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!
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