Woodfree adhesive paper is a self-adhesive substrate manufactured from chemical wood pulp that has had the lignin component completely removed during the pulping process. The absence of lignin is what distinguishes it from mechanical wood-pulp papers: it resists yellowing, delivers a brighter base white, and provides a stable, predictable surface for printing inks and adhesive coatings.
Structurally, the material is a laminate of three functional layers: the woodfree facestock on top, a pressure-sensitive adhesive in the middle, and a silicone-coated release liner on the bottom. This construction allows the label to be die-cut, dispensed, and applied to target surfaces without additional bonding agents on the production line.
Key distinction: "Woodfree" does not mean the paper contains no wood fiber — it means the wood pulp has been chemically treated to remove lignin and resins, resulting in higher brightness, better aging resistance, and superior printability compared to mechanical pulp papers.
The following grid summarises the standard parameters for Guanhao's woodfree adhesive paper range. Custom combinations of weight, adhesive type, and liner are available on request.
Guanhao supplies three primary variants under the woodfree adhesive category. The table below maps their technical differences to help procurement teams select the correct grade for their application.
| Variant | Facestock Weight | Adhesive Type | Removability | Typical Use | Product Page |
|---|---|---|---|---|---|
| Basic Woodfree Paper | 80 gsm | Permanent acrylic | Non-removable | Office stationery, laser & handwritten labels | View |
| General Purpose Woodfree | 90 – 100 gsm | Permanent acrylic | Non-removable | Product pricing, retail labeling, barcodes | View |
| Removable Woodfree Label | 80 – 100 gsm | Removable acrylic | Clean removal, repositionable | Logistics, product pricing, promotional sealing | View |
The adhesive layer is arguably the most technically complex component of a self-adhesive label construction. For woodfree facestocks, two adhesive chemistries dominate the market:
Water-based acrylic emulsion adhesives cure to form strong, durable bonds with a broad range of surface energies. They exhibit excellent UV and plasticizer resistance, making them the default choice for product labels that must remain legible and attached throughout the supply chain. Initial tack is high, and ultimate bond strength increases over 24–72 hours as the adhesive flows into microscopic surface irregularities.
Removable grades are formulated with a lower peel-force profile — typically 3–8 N/25mm at 180° peel on stainless steel — versus 10–18 N/25mm for permanent grades. Critically, the adhesive leaves no residue on clean, low-energy surfaces such as glass and polyethylene, which is essential for logistics labels on reusable containers and promotional stickers on retail packaging. Guanhao's Removable Woodfree Paper Label is explicitly engineered for repeat-pasting scenarios without surface damage.
| Printing Method | Compatibility | Recommended Resolution | Notes |
|---|---|---|---|
| Laser (electrophotographic) | Excellent ✓✓ | 600 – 1200 dpi | Allow 3–5 s cooling; use paper-weight preset |
| Inkjet (dye-based) | Good ✓ | 300 – 600 dpi | Neutral surface pH promotes faster drying |
| Inkjet (pigment-based) | Excellent ✓✓ | 600 – 1200 dpi | Superior water resistance vs. dye-based |
| Offset Lithography | Excellent ✓✓ | 175 lpi screen | Low ink absorption creates crisp halftones |
| Flexographic | Good ✓ | 120 – 150 lpi | Water-based or UV flexo inks preferred |
| Thermal Transfer | Good ✓ | 203 – 300 dpi | Requires compatible ribbon; test first on 80 gsm |
| Direct Thermal | Not recommended ✗ | N/A | Requires heat-sensitive coating; use Thermal Adhesive grades instead |
The structural and optical characteristics of woodfree adhesive paper make it suitable across a broad spectrum of industries. Below is a sector-by-sector breakdown aligned with Guanhao's verified application areas.
Price tags, shelf-edge labels, barcode labels, and SKU stickers all demand consistent print registration and strong adhesion to cardboard, glass, and HDPE packaging. The 90–120 gsm range provides enough stiffness for automated label dispensers while remaining thin enough for neat corner wrap.
High-volume logistics labels printed on thermal transfer or laser equipment require a facestock that can tolerate warehouse humidity fluctuations (typically 20–80% RH) without curling or delaminating from the liner. Permanent acrylic adhesive on general-purpose woodfree maintains reliable bond strength in these conditions.
Drug labels must comply with serialisation and traceability standards (GS1, EU FMD). The smooth, high-brightness woodfree surface supports fine-print variable data — batch numbers, expiry dates, and 2D DataMatrix codes — at the resolutions required by regulatory bodies without dot gain degrading barcode scanability.
Component identification and ESD-warning labels used in electronics manufacturing benefit from the chemical-pulp base's dimensional stability under soldering oven temperatures. Woodfree grades rated to 80°C sustained service temperature are suitable for most board-level labeling scenarios where full polyimide labels are cost-prohibitive.
Shampoo, detergent, and personal-care labels face moisture exposure in retail and consumer environments. While Film Adhesive products offer superior water resistance, premium woodfree grades with permanent acrylic provide a cost-effective solution when products are unlikely to be fully submerged and a paper aesthetic is brand-preferred.
| Property | Woodfree Adhesive | Copperplate (Coated) | Film Adhesive | Thermal Adhesive |
|---|---|---|---|---|
| Surface Finish | Uncoated / matte | Gloss or silk coated | Gloss or matte film | Thermal-sensitive coating |
| Print Sharpness | High | Very High | Very High | Medium |
| Water Resistance | Low – Medium | Medium | High | Low |
| Tear Resistance | Medium | Medium | Very High | Low |
| Eco Profile | Excellent (recyclable) | Good | Moderate (plastic) | Good |
| Cost Index | ★★☆☆☆ (Low) | ★★★☆☆ (Medium) | ★★★★☆ (High) | ★★☆☆☆ (Low) |
| Best For | Office, logistics, retail | Premium FMCG, cosmetics | Chemical, food, outdoor | Point-of-sale receipts |
Woodfree adhesive paper should be stored flat (not on end) in a cool, dry environment: 15–25°C and 40–65% relative humidity. Rolls should remain in their original packaging until use. Exposure to direct sunlight or fluorescent UV accelerates the aging of both the facestock and the adhesive.
The target surface must be clean, dry, and free of oils or loose particles. For smooth substrates — glass bottles, powder-coated metals — a quick wipe with an isopropyl alcohol cloth raises surface energy and dramatically improves adhesion. Application below 5°C is not recommended with standard acrylic adhesives; low-temperature variants are available for cold-chain environments on request.
Woodfree facestocks die-cut cleanly with both rotary and flatbed tooling. Because the surface is uncoated, edge quality is excellent and matrix stripping is reliable even at high die-cutting speeds. Lamination with BOPP overlaminates is possible for applications requiring moisture or scuff resistance without migrating to a film facestock.
The removal of lignin from woodfree paper not only improves print performance but also extends the material's useful life — it does not yellow or become brittle as rapidly as mechanical pulp paper. From a recyclability standpoint, paper-based labels are accepted in most fiber-recycling streams, provided the adhesive residue content is within limits specified by industry bodies such as INGEDE (European deinking standards). Guanhao's permanent acrylic adhesive is formulated as a water-based emulsion, avoiding solvent-borne chemistries that complicate end-of-life processing.
Guanhao Label is a professional self-adhesive label material manufacturer based at No. 888 Cangqing Road, Xincang Town, Pinghu City, Zhejiang, China. The company exports a complete range of pressure-sensitive label constructions — including Thermal Adhesive, Copperplate Paper Adhesive, Film Adhesive, and Woodfree Adhesive — serving industries from retail and logistics to pharmaceuticals and electronics globally.
The technical and sales teams provide end-to-end support: material selection, custom slitting and sheeting, sample evaluation, and after-sales technical guidance. Custom configurations — non-standard roll widths, alternative liner weights, private-label branding — are handled through the contact and inquiry form.
Request a sample or quote: Contact Guanhao Label at +86-573-8571-1001 or email 031105@chinapaper.com.cn. Visit the full Woodfree Adhesive product page for the latest variant listing.
