What is Flexographic Printing? Flexible Printing for Holograms
Flexographic printing (often called flexo printing) is a high‑speed, rotary relief printing process that uses flexible photopolymer plates wrapped around cylinders to transfer ink onto a wide range of substrates – including paper, plastic film, metallic film, and especially holographic film. In flexo, the raised image areas on the plate receive ink from an anilox roller (a precision‑engraved roller that meters the ink), and then the plate transfers the ink directly to the substrate. Flexographic printing is widely used for producing brand logos, text, background patterns, barcodes, QR codes, and variable data (serial numbers) on hologram labels. It offers a balance of quality, speed, and cost that makes it ideal for medium‑to‑large runs (typically 50,000 to 5 million labels). Unlike rotogravure (which requires expensive engraved cylinders), flexo plates are less expensive and quicker to produce, allowing for faster turnaround and easier design changes. Flexo presses can also be combined with inline processes like die‑cutting, hot stamping, and lamination, making them a versatile choice for converting hologram label rolls. Holoseal offers flexo‑printed hologram labels for clients who need high‑quality printing with reasonable setup costs and fast production times.
🔍 How Flexographic Printing Works (Step‑by‑Step)
- Plate preparation – A digital file of your artwork is used to create a flexible photopolymer plate (typically 0.5–2 mm thick). The plate is developed, and the raised image areas become the printing surface.
- Mounting the plate – The flexible plate is wrapped around a printing cylinder (or a sleeve).
- Inking with anilox roller – An engraved anilox roller picks up ink from a chamber and transfers a precise, uniform layer of ink to the raised areas of the plate. The anilox roller’s cell volume and line count determine the ink density.
- Printing – The substrate (holographic film) passes between the plate cylinder and an impression roller. The plate transfers the ink to the film.
- Drying / curing – The printed film moves through a hot air dryer (for solvent or water‑based inks) or past UV lamps (for UV‑curable inks).
- Inline finishing (optional) – Many flexo presses include additional stations for die‑cutting, slitting, hot stamping, or laminating.
Flexo presses can have multiple print stations (e.g., 4–10 colours) for full‑colour graphics and can print on both sides of the film (with appropriate turning bars).
🛡️ Why Flexography is Ideal for Hologram Label Printing
- Wide substrate compatibility – Flexo prints on nearly any surface: glossy holographic film, matte paper, PET, BOPP, and even metallic foil.
- Good print quality for text and barcodes – Modern flexo (with high‑resolution plates and precise anilox rollers) produces sharp edges, making barcodes highly scannable.
- Cost‑effective for medium runs – Plate costs are much lower than rotogravure cylinders, making flexo economical for runs from 50,000 to a few million labels.
- Fast turnaround – Photopolymer plates can be made in hours, not weeks.
- Variable data capability (hybrid) – While traditional flexo prints the same image repeatedly, it can be combined with digital inkjet heads for variable data (e.g., unique QR codes or sequential numbers). Holoseal offers such hybrid solutions.
- Inline finishing – Many flexo presses laminate, die‑cut, and slit the labels in one pass, reducing handling and lead time.
🔐 Flexography vs. Rotogravure vs. Digital for Hologram Labels
- Flexography – Best for medium to large runs (50k–5M). Moderate plate cost, good print quality, fast changeover. Ideal for most brand protection labels.
- Rotogravure – Best for very long runs (>5M). High cylinder cost, very low per‑unit cost, excellent ink opacity. Used for high‑volume pharmaceutical and FMCG labels.
- Digital printing – Best for short runs (1k–50k) and fully variable data (unique QR codes). No plate cost, but higher per‑unit cost and slower speed.
📦 What Can Be Printed with Flexography on Hologram Labels
- Brand logos and text – Sharp, opaque printing of company names, product descriptions, and warning labels.
- Background patterns and guilloche – Fine security patterns that deter copying.
- Linear barcodes (Code 128, Code 39, EAN‑13) – High contrast for reliable scanning at retail and warehouses.
- Static QR codes – If the same QR code repeats on all labels (e.g., link to brand website). For unique codes, we use hybrid flexo + digital.
- UV‑fluorescent inks (covert) – Flexo can apply invisible UV inks that glow under black light.
- Spot varnish or matte finish – For aesthetic or protective coatings over the printed area.
⚙️ Integration with Hologram Manufacturing
Flexographic printing is typically performed after the holographic film has been embossed and metalized. The printed roll then goes to adhesive coating, slitting, and die‑cutting. Holoseal manages the entire workflow: we arrange hologram origination, embossing, and then flexo printing at dedicated converting facilities. The result is a finished hologram label roll ready for your automatic packaging line.
🌍 Holoseal’s Flexographic Printing Capabilities
We offer flexo‑printed hologram labels for clients with medium to high annual demand. Our process includes:
- Plate making – High‑resolution photopolymer plates (up to 133 lpi or higher) for sharp text and fine details.
- Ink selection – Solvent‑based, water‑based, or UV‑curable inks matched to your holographic substrate. We also offer food‑contact‑safe inks.
- Multi‑colour printing – Up to 8 colours for complex brand graphics.
- Hybrid variable data printing – Combine flexo with digital inkjet for unique QR codes or serial numbers on each label.
- Inline finishing – Die‑cutting, slitting, and waste matrix removal in one pass.
We serve clients across Mumbai, Delhi, Bengaluru, Chennai, Hyderabad, Pune, Ahmedabad, Kolkata, Surat, Kochi, Jaipur, Lucknow, Nagpur, Indore, Vadodara, Ludhiana, Patna, Guwahati, Chandigarh and worldwide. With 15+ years of experience, we help you select the right printing method (flexo, rotogravure, or digital) based on your volume, variable data needs, and budget.
❓ Frequently Asked Questions About Flexographic Printing for Holograms
What is the minimum order quantity for flexo‑printed hologram labels?
Flexo is economical for runs starting at around 50,000 labels. For smaller quantities (e.g., 10,000), digital printing may be more cost‑effective because there are no plate costs. We provide a free cost comparison.
Can flexography print variable data like unique QR codes on each label?
Traditional flexo cannot print unique codes because the plate is fixed. However, we can combine flexo (for static graphics) with a digital inkjet unit (inline) to print unique QR codes, serial numbers, or barcodes. This hybrid approach is very popular for pharma and track‑and‑trace labels.
Is flexo print durable on holographic film?
Yes – with UV‑curable or solvent‑based inks, the print is highly resistant to scratching, rubbing, and mild chemicals. For extreme environments, we can apply a protective varnish over the print.
How long do flexographic plates last?
Depending on the substrate and ink, a photopolymer plate can last for 50,000–200,000 impressions. For longer runs, multiple plates may be used or the job may be switched to rotogravure.
Can flexography print on the adhesive side of a hologram label?
Printing on the adhesive side is not typical because the adhesive would interfere. However, we can print on the release liner or print on the back of the hologram film before adhesive coating.
How to order flexo‑printed hologram labels from Holoseal?
Provide your artwork, label dimensions, annual quantity, and any variable data requirements. We will quote plate costs and per‑label price, then produce samples for your approval. Contact us for a quote.