FAQ sur les matériaux d'étiquettes de sécurité

Qu'est-ce qu'un matériau d'étiquette de sécurité ?

Un matériau d'étiquette de sécurité est un adhésif conçu pour laisser une trace visible en cas de tentative de retrait, d'ouverture ou de manipulation. Selon sa conception, il peut révéler un message caché « VOID » ou « OPENED », transférer une partie de la couche de sécurité sur le support, se briser lors du retrait ou créer une autre altération visuelle irréversible.

Pour l'approvisionnement B2B, évaluez le système complet : support + couche de sécurité fonctionnelle + surface imprimable + adhésif sensible à la pression + film protecteur. Voir Comment fonctionnent les systèmes d'étiquettes de sécurité.

Quelle est la différence entre « inviolable » et « à l’épreuve des falsifications » ?

L'expression « inviolable » signifie que la construction est conçue pour rendre toute interférence visible après qu'elle se soit produite. L'appellation « inviolable » est couramment utilisée dans le commerce, mais un scellé sensible à la pression ne doit pas être considéré comme rendant l'accès physiquement impossible en toutes circonstances.

Pour les spécifications, définissez les preuves nécessaires après le retrait : message transféré, effet VOID côté étiquette, destruction du support, déchirure de la fibre du carton ou autre modification permanente.

Comment fonctionne le matériau d'étiquette VOID ?

Le matériau VOID utilise une séparation contrôlée entre les couches fonctionnelles. Lorsqu'on tente de le retirer, sa structure se sépare de manière intentionnelle et révèle un motif caché tel que VOID, OPENED, VOIDOPEN, SECURITY, un logo ou un texte personnalisé.

Le message peut rester principalement sur le support, principalement sur l'étiquette retirée, ou être réparti entre les deux surfaces. Voir Qu'est-ce que le matériau d'étiquette VOID ? et le Comparaison complète / partielle / sans transfert.

Quelle est la différence entre le matériau d'une étiquette VOID et une étiquette VOID finie ?

Les étiquettes VOID sont des supports prêts à l'emploi, fournis en rouleaux jumbo, en rouleaux refendus, en feuilles ou dans d'autres formats pour l'impression et la découpe. Une étiquette VOID finie est déjà au format final et peut comporter une impression, des données variables, des numéros de série ou des formes découpées.

Les transformateurs doivent définir la largeur du rouleau, le support, le noyau, la méthode d'impression et le processus en aval. Voir le Guide des rouleaux de matériaux d'étiquettes VOID.

Quelle est la différence entre les matériaux de sécurité VOID et les matériaux de sécurité destructibles ?

Les constructions VOID ne laissent aucune trace de falsification, principalement par séparation ou transfert contrôlé des couches. Les matériaux destructibles, quant à eux, laissent principalement des traces par fracture de la surface, ce qui rend leur retrait propre et intact difficile.

Utilisez VOID lorsqu'un message caché lisible ou un effet de transfert contrôlé est important. Envisagez un matériau destructible lorsque la rupture de l'étiquette elle-même constitue le principal mécanisme anti-retrait. Voir Matériaux d'étiquettes destructibles et le Guide de sélection des convertisseurs.

Comment choisir entre l'annulation par transfert total, par transfert partiel et sans transfert ?

Commencez par le résultat d'inspection requis. Le transfert intégral est une option de départ lorsqu'une preuve visible et nette sur la surface d'application est nécessaire. Le transfert partiel répartit la preuve entre l'étiquette retirée et le support. Le non-transfert préserve le message caché principalement dans l'étiquette retirée, tout en minimisant les traces de transfert visibles sur la surface protégée.

Il s'agit de lignes directrices de sélection, et non de garanties universelles. Le résidu final et la clarté du message dépendent de l'adhésif, du support, du temps de contact et de l'environnement. Comparez les formulations sur Types de matériaux d'étiquettes VOID.

L'appellation « ANNULÉ sans transfert » signifie-t-elle absolument zéro résidu ?

Pas nécessairement. Le terme « non-transfert » décrit le comportement prévu de la couche de sécurité ; il ne doit pas être interprété comme une garantie universelle d’absence totale de résidus d’adhésif sur toutes les surfaces.

Le résidu réel peut varier en fonction de la chimie de surface, du revêtement, de la pression d'application, du temps de contact, de la température et du vieillissement. Pour les surfaces sensibles ou réutilisables, testez la construction choisie sur le produit final. Voir la Non-Transfer VOID Buyer’s Guide.

Can the hidden VOID or OPENED message be customized?

Oui. Les constructions appropriées peuvent utiliser des messages cachés standard ou personnalisés tels que VOID, OPENED, VOIDOPEN, SECURITY, un nom d'entreprise, un logo, un texte d'avertissement ou un motif répétitif.

Custom patterns may require artwork preparation, gravure-cylinder or tooling setup and a project-specific MOQ. Standard stock patterns are usually more suitable when fast sampling and flexible quantities are priorities.

Can the same VOID construction be used on every surface?

No. A material that activates correctly on glass or PET may behave differently on PP, PE, HDPE, coated cartons, painted metal or textured plastics. Adhesive wet-out, coating strength and surface energy all influence the final result.

Start with the actual substrate and required tamper response, then qualify samples. See the Guide d'utilisation des étiquettes de sécurité inviolables.

Can a VOID label be removed and reused without evidence?

A properly selected VOID construction is designed so removal produces an irreversible visual change. The original condition should not be restored simply by pressing the label back into place.

For critical projects, evaluate removal and reapplication attempts during sample qualification rather than relying only on a hand-peel demonstration.

Why is the application surface so important?

The adhesive must wet out and bond to the real substrate strongly enough to activate the intended security response. Two surfaces that look similar may behave differently because of surface energy, varnish, paint, texture, contamination, plasticizers or release agents.

This is why Hanksec recommends identifying the exact substrate before selecting the adhesive. See the Guide de sélection des adhésifs et des substrats.

What surfaces can security label materials be applied to?

Selon l'adhésif et la construction, les applications peuvent inclure le verre, le PET, l'ABS, le PC, le PP, le PE, le PEHD, le métal peint ou non peint, le carton couché, le carton ondulé, l'acrylique, les boîtiers électroniques et les composants industriels.

A material family should not be assumed to work equally well on all these surfaces. Sample qualification on the real substrate remains the preferred approach.

Why are PP, PE and HDPE more difficult to label?

PP, PE and HDPE are commonly treated as lower-surface-energy plastics. Standard pressure-sensitive adhesives may not wet out these surfaces as effectively as higher-energy substrates such as glass, PET or clean metal.

The final choice should consider the exact molded or packaging surface, not only the polymer name. Check initial tack, developed adhesion, edge lifting and final tamper activation on the actual part.

Can security labels be used on rough, textured or powder-coated surfaces?

Yes, but roughness and texture reduce the true contact area between adhesive and substrate. Some applications may require a different adhesive chemistry, coat weight or more conformable material construction.

For rough cartons, textured plastics, powder-coated metal or slightly contaminated industrial surfaces, evaluate application pressure, dwell time, edge lifting and final tamper response before bulk approval.

What information should I provide for adhesive selection?

Indiquez le matériau du substrat, la finition de surface, le revêtement ou la peinture, la température d'application, la température de service, l'humidité ou l'exposition chimique, la réponse requise en cas de falsification, l'exigence de résidu, la taille de l'étiquette et le temps de contact prévu.

If possible, send a real substrate sample. A physical sample is often more useful than trying to select an adhesive from a generic material name alone.

Are security label materials printable?

De nombreux matériaux pour étiquettes de sécurité peuvent être fournis avec une surface imprimable, un apprêt ou une couche de finition. La compatibilité dépend du système d'encre, de toner ou de ruban utilisé, ainsi que de la plateforme d'impression.

A material can produce the correct VOID effect and still fail printing requirements if the surface chemistry is mismatched. See the Guide des matériaux pour étiquettes de sécurité imprimables.

Which printing methods can be used on security label materials?

En fonction du traitement de surface et de la construction du produit, les projets peuvent être évalués pour les systèmes d'impression suivants : flexographie UV, sérigraphie, offset, transfert thermique, impression numérique sélectionnée, jet d'encre pigmentaire et autres.

“Digital printable” or “inkjet printable” should not be treated as universal specifications. Confirm the actual printer, ink or toner, drying or curing conditions and downstream converting process.

Can VOID materials be printed by thermal transfer?

Yes, when the printable surface is compatible with the selected ribbon and printer settings. Qualification should include ribbon transfer, print density, scratch or rub resistance and barcode or QR readability.

The printable topcoat must also remain compatible with the security-layer behavior and downstream die cutting.

Can barcodes, QR codes, serial numbers and variable data be added?

Oui, les matériaux compatibles peuvent contenir des codes-barres, des codes QR, des numéros de série, du texte variable, des logos et des informations de traçabilité. La méthode d'impression et de vérification dépend du fait que le transformateur imprime en interne ou que Hanksec fournisse un format converti.

For barcode or QR applications, check scan readability after printing, handling and any required environmental exposure.

Why should a printed security material be tested again after converting?

Printing is only one part of the production system. Die cutting, matrix stripping, slitting, rewinding and dispensing can introduce additional mechanical stress.

Final qualification should confirm that print adhesion and readability remain acceptable and that the intended VOID or destructible response still works after converting. See the Guide de contrôle de la qualité des matériaux d'étiquettes de sécurité.

Do pigment-inkjet systems require a special coating?

Often they do. A standard PET or security surface that works well with UV or flexographic ink may not provide suitable drying, dot definition or rub resistance with pigment inkjet.

For Epson ColorWorks and similar systems, review the Guide des matériaux pour étiquettes imprimables à jet d'encre and qualify the exact printer and ink set.

Do you supply security label materials in jumbo rolls and slit rolls?

Oui. Selon la conception du produit et les exigences du projet, les matériaux d'étiquettes de sécurité peuvent être fournis sous forme de rouleaux jumbo/maîtres, de rouleaux refendus, de feuilles ou de formats convertis.

Converters should specify web width, roll length, core size, winding direction and release-liner requirement. See the Guide de sélection des rouleaux jumbo et refendus.

What should a label converter provide before ordering roll material?

Provide the printing process, required security construction, application substrate, web width, roll length, core size, winding direction, release liner, die-cutting method, approximate label geometry and estimated volume.

This helps separate material selection from machine-fit issues and reduces the risk of approving a small sample that does not run correctly on the production line.

Why is the release liner important?

Le film protecteur protège l'adhésif avant application et influe également sur la force de libération, la découpe à l'emporte-pièce, le dénudage de la matrice, le rembobinage, la manipulation de la bande, la distribution et la stabilité du rouleau.

Changing liner type can change converting behavior even when facestock and adhesive remain the same. See Glassine vs PET Release Liner.

When should I choose glassine versus PET release liner?

Glassine is widely used for conventional label converting and can provide a practical balance of cost and processing performance. PET liner offers higher dimensional stability and tensile strength and may be useful for demanding high-speed converting or dispensing.

Neither is automatically better. Liner selection should be driven by the complete laminate, die-cutting method, web tension, dispensing geometry and machine conditions.

What is release force?

Release force is the force required to separate the pressure-sensitive laminate from its release liner under defined test conditions. Stable release behavior supports matrix stripping, dispensing and consistent web handling.

Release force should be evaluated together with the adhesive and liner rather than as an isolated number.

Why do matrix stripping or die-cutting problems occur with security materials?

Possible causes include incorrect die depth, fragile facestock, excessive web tension, narrow matrix, sharp label corners, adhesive flow, unstable release force or a liner that is not suitable for the process.

Security and destructible materials can have a narrower converting window than ordinary label stock. See the Destructible Material Converter Guide et Guide de contrôle de la qualité.

What controls how easily a destructible material breaks?

Destructibility is influenced by facestock formulation, film thickness, elongation and brittleness, adhesive bond strength, application substrate, temperature, dwell time and label geometry.

The most fragile material is not automatically the best choice: extreme brittleness can create printing, die-cutting or matrix-stripping problems. Compare easy, medium and hard directions in the Destructible Label Material Rolls Guide.

Are destructible materials suitable for very small labels?

They can be, but small labels place greater demands on die-cutting accuracy, corner geometry, matrix stripping and dispensing. A very fragile facestock may provide strong anti-removal behavior while reducing converting stability.

Sample rolls should be evaluated at the intended label size and production speed.

Can holographic effects be combined with VOID tamper evidence?

Yes. A holographic optical layer can be combined with a VOID, partial-transfer, non-transfer or destructible construction depending on the project. Holographic appearance provides visible authentication, while the underlying security structure provides removal evidence.

Voir le Hologram Labels Selection Guide.

Are all hologram labels tamper-evident?

No. A holographic effect is an optical authentication feature; it does not automatically create tamper evidence. For removal evidence, the hologram must be combined with a VOID, destructible or other engineered tamper-response construction.

What are paper VOID materials used for?

Paper VOID materials use a paper-based facestock together with a controlled security and adhesive system. They are often considered for fiber-based cartons and paper packaging where buyers want the security label to integrate more naturally with the package construction.

See Étiquettes papier VOID : matériaux, types de transfert et applications.

Do you offer high-temperature label materials for PCB and electronics?

Yes. High-temperature projects may use polyimide or application-specific PET constructions depending on the thermal profile, adhesive requirement and printing system.

The facestock temperature alone is not a finished-label rating. Confirm peak temperature, exposure time, repeated thermal cycles, substrate and print durability. See High-Temperature Polyimide Label Material.

What is a water-contact indicator label material?

Water-contact indicator material is designed to create a visible response after contact with a defined liquid or moisture condition. It can be used for electronics, warranty inspection and liquid-exposure verification.

Selection should consider target liquid, humidity environment, laminated or unlaminated construction, adhesive, application location and converting format. See the Water Contact Indicator Buyer’s Guide.

What tests should be performed before bulk production?

Cinq domaines clés sont particulièrement utiles pour les matériaux de sécurité destinés aux transformateurs : l’adhérence au pelage, la force de libération, la découpe à l’emporte-pièce et le décapage de la matrice, la vérification de la réponse à la falsification et les tests d’impression/de code-barres/de frottement.

Additional checks may be needed for temperature, ageing, chemical exposure or application-specific risks. See the Guide de contrôle de la qualité des matériaux d'étiquettes de sécurité and Hanksec Assurance qualité page.

Is a hand-peel test enough to approve a security material?

No. A hand-peel demonstration is useful for initial screening, but it does not represent production printing, die cutting, matrix stripping, web handling, automatic dispensing, longer dwell time or the full service environment.

Bulk approval should use representative production and end-use conditions wherever practical.

Why does dwell time matter?

Pressure-sensitive adhesive bonding can develop after application. A label peeled immediately may behave differently after several hours or days.

When comparing materials, keep application pressure, temperature and dwell time consistent so the tamper response is being compared under equivalent conditions.

Why should samples be tested on the customer’s actual substrate?

Laboratory panels cannot reproduce every varnish, paint, molded plastic, roughness, contamination or curvature found in production. These factors can change adhesion, residue behavior and VOID activation.

Actual-substrate testing is one of the most important steps before bulk production, particularly for sensitive surfaces or low-surface-energy plastics.

Une meilleure adhérence au pelage signifie-t-elle toujours une meilleure preuve de falsification ?

No. Peel adhesion measures one aspect of adhesive performance under defined conditions. Tamper evidence also depends on the facestock, functional security layer, transfer mechanism, substrate and removal behavior.

The goal is a controlled system that produces the required security response — not simply the highest possible peel value.

How does Hanksec control manufacturing consistency?

Hanksec’s manufacturing workflow includes security-layer production, coating, metallizing where required, printable-surface treatment, adhesive coating, release-liner lamination, slitting and quality inspection. The relevant controls depend on the material construction.

For a manufacturing overview, see Capacités de fabrication.

What can be customized on security label materials?

Selon la famille de produits, la personnalisation peut inclure le message VOID / OPENED, un logo ou un motif, le comportement de transfert, le support, la couleur, l'épaisseur, l'effet holographique, la couche de finition imprimable, le système adhésif, le support antiadhésif, la largeur de la bande, la longueur du rouleau, la taille du mandrin et le sens d'enroulement.

Voir le Présentation des produits et matériaux Hanksec for the broader range.

Can the adhesive be customized for a specific substrate?

For selected projects, the adhesive direction can be matched to the intended substrate, surface condition and environment. Unusual plastics, sensitive surfaces, high/low temperature or special residue requirements should begin with application details and sample testing.

Can material thickness be customized?

Selected constructions can be supplied in different facestock thicknesses or project-specific structures. Thickness should not be changed independently because it can affect stiffness, die cutting, matrix stripping, rewinding, dispensing and tamper response.

Can I request samples before placing a bulk order?

Yes. Sample evaluation is strongly recommended for technical security-material projects. Standard material samples can be used for initial screening, while custom constructions may require artwork, tooling, plate/cylinder setup or sample charges depending on the project.

Use the Contactez Hanksec page to send the substrate, printing method and required tamper response with your sample request.

What is the MOQ?

There is no single MOQ for every security material. MOQ depends on whether the material is stock or custom, the roll format, hidden message, color, coating, adhesive, liner, holographic feature and manufacturing setup.

Standard stock constructions generally allow more flexible quantities than fully customized materials. Send the required specification first so MOQ can be quoted against the actual production route.

What information is needed for a quotation?

Pour obtenir un devis technique dans les plus brefs délais, veuillez fournir : le support d’application, la réponse à la falsification requise, la méthode d’impression, le matériau ou le format du rouleau, la largeur de la bande, la longueur du rouleau, la taille du mandrin, le sens d’enroulement, la préférence de doublure, la couleur, le message personnalisé et la quantité estimée.

Photos or a physical sample of the application surface are also useful.

Do you supply only finished labels?

Non. Le positionnement principal de Hanksec est celui de fabricant de matériaux d'étiquettes de sécurité et de fournisseur de solutions inviolables, fournissant des matériaux prêts à la conversion ainsi que certains formats convertis.

Label converters and printers can source jumbo or slit rolls for in-house printing and die cutting. End users with a finished-label requirement can confirm the required converting scope with the sales team.

Can tamper-evident materials be used for pharmaceutical and healthcare packaging?

Yes, tamper-verification materials can be used as one component of pharmaceutical and healthcare packaging systems for medicine cartons, bottles, vials, medical-device packaging and related applications.

A label by itself does not make the complete package compliant. The package design, substrate, application method and target-market requirements must be assessed together. See Pharmaceutical VOID Materials Guide.

Which security material is suitable for electronics and warranty protection?

Common starting directions include non-transfer or partial-transfer VOID when residue control matters, full-transfer VOID when stronger surface evidence is preferred, and destructible material when intact label removal should be difficult.

Final choice depends on device surface, service-access point, label size and inspection method. See Étiquettes de sécurité : types, matériaux et sélection.

What should be used for carton sealing and logistics security?

For cartons, parcels and shipping packaging, buyers may consider security packing tape, carton-sealing tamper labels or full/partial-transfer VOID constructions depending on the opening path and residue requirement.

See Rubans adhésifs de sécurité inviolables pour emballage et le Security Packing Tape range.

How is security bag tape different from ordinary carton security tape?

Security bag tape is designed around flexible bag films and the bag-manufacturing process. Adhesive compatibility with HDPE, LDPE, co-extruded or laminated bag films can be very different from adhesion to corrugated carton.

Bag tape may also incorporate additional tamper-response features depending on security level. See the Security Bag Tape Selection Guide et Bag Tape Types.

When should I use an evidence bag instead of a label or tape?

An evidence or security bag is appropriate when the complete pouch must provide controlled one-time closure, identification and chain-of-custody support for documents, cash, evidence or sensitive contents.

Voir le Tamper Evident Security Bags Guide for bag structures, applications and selection criteria.

Can tamper-evident labels prevent theft or opening completely?

No pressure-sensitive seal should be treated as a physical lock. Its primary purpose is to make unauthorized opening, removal or manipulation more visible and harder to conceal.

For higher-risk systems, combine tamper evidence with appropriate packaging design, traceability, inspection procedures and other physical or digital controls.

Where should a new buyer start if they do not know which security material to choose?

Start with the Security Labels Selection Guide to define required tamper response, application substrate, residue requirement, printing method and supply format.

Then use the Hanksec Knowledge Center for deeper guides on adhesives, release liners, printing, roll formats, destructible materials and quality testing.

How does Hanksec recommend a material for a new project?

Define the application first: substrate, tamper-response objective, printing method, converting process, service environment and supply format. Suitable constructions can then be shortlisted for sample evaluation.

This application-first approach is designed to avoid choosing a material only from color, VOID pattern or a generic adhesive specification.

What should I send Hanksec for a technical evaluation?

Send application photos, substrate type, surface coating or finish, current material if available, required security effect, printing method, final label size, die-cutting or converting process, roll specification, temperature range and estimated quantity.

If a material is failing in production, also provide photos or video of the failure and describe when it occurs.

Where can I review Hanksec’s manufacturing and quality capabilities?

Use Capacités de fabrication to review the production workflow and Assurance qualité to review material input control, functional testing and pre-production qualification.

Where can I see all products and technical guides?

Use the Aperçu des produits et des matériaux for product families and the Centre de connaissances sur les matériaux d'étiquetage de sécurité for technical and buyer guides.

For company background, production history and factory information, see À propos de Hanksec.