With RFID technology spreading in garment traceability, smart access control and similar fields, demand keeps growing for simultaneous multi-label application on large cards and hang tags. Multi-label application, however, often makes it hard to balance output and accuracy. Conventional single-head machines need multiple passes, which is slow and accumulates error. Multi-station parallel labeling is now an important trend in industry upgrades.

Technical challenges and industry trends in multi-label application on large cards

In multi-area labeling of large cards (such as 600mm garment RFID hang tags or smart cards), a conventional single-head labeler requires repeated conveying and positioning. This serial mode stretches the production cycle and, with repeated positioning, easily shifts the relative position of labels. In addition, if the machine lacks rigidity, large cards vibrate and drift at high conveying speed, causing wrinkles or bubbles. To break this bottleneck, the industry is moving from single-head serial labeling to multi-head parallel labeling: several heads work at once so multiple areas are labeled in a single pass, raising output while safeguarding registration accuracy.

Parallel labeling technology and how the WZ-125G applies it

To meet the technical challenges of multi-label application on large cards, Wanzhi Automation developed the WZ-125G automatic four-head card labeling machine, an efficient parallel labeling solution. The machine uses a modular head design and supports 2 to 6 heads working in parallel. On core parameters, registration accuracy reaches ±0.5mm, meeting the strict multi-label alignment requirements for RFID smart cards; dispensing speed reaches 60M/min and overall capacity is about 1200~1600 cards/min, greatly improving batch processing efficiency.

To ensure stability at high web speed, the WZ-125G has a one-piece long, heavy stainless steel frame weighing 900Kg, which suppresses vibration and drift during high-speed operation. The machine handles large cards up to 600mm in length and width, and with high-accuracy two-side supported labeling modules and automatic separating and collecting mechanisms it achieves fully unmanned continuous production, from separating and loading through simultaneous multi-area labeling to stacking collection.

Selection essentials and typical applications

When selecting an automatic labeling machine of this kind, you can refer to the technical advice of manufacturers such as Wanzhi Automation and focus on the following:

  • Frame rigidity and stability:High-speed conveying of large cards depends on a heavy-duty frame to suppress vibration.
  • Head synchronization accuracy:Parallel operation of several heads requires their relative positions to be fixed to safeguard registration accuracy.
  • Smoothness of the loading and unloading mechanisms:Automatic separating and collecting mechanisms are the key to continuous unmanned production.

For garment RFID traceability, smart card manufacturing, furniture hang tag processing and ID card printing, choose the model according to the card’s label layout. If future orders involve switching between several product types, modular equipment offers greater reusability. For some tiny precision parts with extremely high visual alignment requirements, the industry also uses CCD vision labeling for assisted positioning, but for flat multi-label application on large cards, the multi-head mechanical parallel approach offers a better balance of output and cost.

FAQ

How does multi-head simultaneous labeling maintain the relative position accuracy of each label?

This relies mainly on a highly rigid frame and high-accuracy two-side supported labeling modules. The heavy-duty frame absorbs vibration during high-speed web travel and keeps the heads at a fixed relative physical position while working together, achieving ±0.5mm labeling accuracy.

How is vibration kept from affecting labeling during high-speed conveying of large cards?

The machine typically uses a one-piece long, heavy stainless steel frame together with an automatic sheet feeding and separating mechanism. The heavy structure keeps the whole unit stable, while precise conveying and hold-down design keep cards flat as they pass the labeling station, preventing wrinkles or drift caused by vibration.

Can the number of heads be adjusted when orders change later?

Modular multi-head machines allow the number of heads to be increased or reduced. As card label layouts change, you can order or add 2 to 6 heads; the equipment is highly reusable and suits orders across many card categories.

Written by Wanzhi Automation