70g Premium Woodfree Paper Office & Stationery Label Material — W1MP40

Construction

The three functional layers of this item. Selecting on face stock alone is where most specification errors begin — the adhesive and liner decide how it behaves on your press.

Product features

• Hot melt adhesive system — good heat resistance for demanding environments
• Woodfree paper face — good for writing and printing
• Verified by customer mass production

FAQ

What does W1MP40 (70g Premium Woodfree Paper, Hot Melt) on a 85g White PEK liner need on paper, card and file folders: primer, corona, or nothing, and does it still hold on our own substrate?

70g Premium Woodfree Paper is specified for the office & stationery field, which does not mean every substrate in it. Uncoated woodfree takes pen and stamp, and it is the least water-resistant face in the range. Not recommended for PVC surfaces; small diameters, irregular or squeezable bottles.

At what temperature do we apply W1MP40 (70g Premium Woodfree Paper, Hot Melt), and what can it take afterwards, and does the liner shift it?

The minimum application temperature is 10 °C and the service range after labelling is -15–65 °C. Below the minimum the adhesive cannot wet out, and edges lift within hours on a curved wall. Both figures are measured at 23±2 °C / 50±5 % RH, so confirm them with a trial roll on your line.

Does W1MP40 (70g Premium Woodfree Paper, Hot Melt) really measure ≥12 N tack, and on which substrate, and is that a 20 min or 24 h value?

Initial tack is ≥12 N by the ball method and 90° peel is ≥6 N/25 mm after 20 min. Both are measured to FINAT FTM 9 and FTM 2 at 23±2 °C / 50±5 % RH. Peel grows with dwell, so compare the same hold time against your own pull test.

Does the 85g White PEK liner add lead time to a W1MP40 (70g Premium Woodfree Paper, Hot Melt) order, and can it be pooled with other codes?

Minimum order quantity is 500 ㎡ and lead time is 15 days after artwork and roll-format approval. A trial roll for press approval can be arranged before the production run starts. Shipment is ex-works Guangzhou, and it can be consolidated with other codes on the same order.

What is the difference between W1MP40 (70g Premium Woodfree Paper) and W4MG31, and can we get both as samples?

The adhesive is the same and the liner differs: W1MP40 uses 85g White PEK Liner, while W4MG31 uses 62g White Glassine Liner. Changing the liner shifts release force and die-cutting behaviour, and the price moves with it. Compare the two technical tables above, then test both on the same substrate.