FL0104W21 is a 80gsm woodfree paper on a 54gsm white glassine liner, built for flexographic presses, in roll form. This page gives you the construction as we actually coat it, where it belongs, and what to pick instead when it does not.
Construction page · last verified 2026-10-19 · published in English · technical questions: contact the lab
A paper facestock is the default for the great majority of label work. It takes ink readily, die-cuts predictably and keeps the cost of the finished label down. What varies between paper grades is the surface: a cast-coated sheet gives a smooth, high-gloss print face, a woodfree sheet gives a more absorbent matte face, and a thermal topcoat gives a heat-sensitive imaging layer instead of a printable one.
Underneath it sits hot-melt adhesive. The liner is a glassine — a supercalendered paper with a dense, closed surface. Glassine releases cleanly at high converting speeds, it is the cheapest liner that does the job, and it is the default for roll-fed work.
This construction sits in the Flexo family, which we build for flexographic presses, in roll form. The family grouping is not marketing shorthand — it is how the topcoat is chosen.
| Material code | FL0104W21 |
|---|---|
| Facestock | 80gsm woodfree paper |
| Adhesive | Hot-melt adhesive |
| Liner | 54gsm white glassine liner |
| Print platform | Flexo |
| Series | Self Adhesive Paper |
| Supply form | Jumbo roll, slit roll — sheeted on request |
Hot-melt is the workhorse system for long runs: it wets out fast, runs at line speed and holds on the substrates that dominate volume labelling. This is the construction to quote when the job is cost-sensitive and the environment is ordinary.
Rough, slightly porous surfaces need an adhesive that flows into the profile instead of sitting on top of it. Hot-melt does that without a special primer.
Batch codes, ingredient panels, logistics barcodes — the everyday labels that carry no unusual environmental demand and simply have to be reliable and cheap.
Sustained heat and high humidity are the conditions where hot-melt systems need an evaluation before you commit a full run.
Surface contamination blocks wet-out. Wipe-down or a high-tack variant is the fix, not a thicker coat.
Paper facestock is not waterproof. Where the label meets water, condensation or a wash-down, a film facestock — or a laminate over the print — is the correct answer.
The Self Adhesive Paper series holds 8 constructions in our catalogue. They share the same facestock family, so the differences that matter are adhesive system and liner — and those two decide which jobs each code wins.
| Code | Facestock | Adhesive | Liner |
|---|---|---|---|
| FL0104W21 | 80gsm woodfree paper | Hot-melt adhesive | 54gsm white glassine liner |
| FL0101W21 | 70gsm woodfree paper | Hot-melt adhesive | 54gsm white glassine liner |
| FL0102W21 | 100gsm woodfree paper | Water-based acrylic adhesive | 54gsm white glassine liner |
| FL0103W21 | 80gsm woodfree paper | Freezer-grade adhesive | 54gsm white glassine liner |
| FL0105W21 | 70gsm semi-glossy cast coated paper | Freezer-grade adhesive | 54gsm glassine liner |
| FL0106W21 | 90gsm high-glossy cast coated paper | Strong adhesion hot melt | T-type 54gsm white glassine liner |
| FL0107W21 | 100gsm high-glossy cast coated paper | Strong adhesion hot melt | A-type 54gsm white glassine liner |
| FL0108W21 | 180gsm high-glossy cast coated paper | Hot-melt adhesive | 54gsm glassine liner |
Buyers often ask the reverse question: the construction works, but the press changes. These are the codes in other families built on the same facestock type.
| Family | Code | Facestock | Adhesive |
|---|---|---|---|
| UV Inkjet | UV0101W21 | 140gsm semi-glossy cast coated paper | 23 +/- 3 mic — adhesive coat weight; system confirmed on the TDS |
| UV Inkjet | UV0105W21 | 80gsm UV Inkjet Semi- glossy Paper | Water-based acrylic adhesive |
| UV Inkjet | UV0103W21 | 160gsm high-glossy cast coated paper | Hot-melt adhesive |
| Memjet | MJ0101W21 | 100gsm high-glossy cast coated paper | Hot-melt adhesive |
Answered from the construction data, not from a brochure.
What the liner contributes to release, converting speed and moisture tolerance.
The full data sheet index for this press family.
The full Flexo family with the interactive filter.
All 62 published constructions side by side, filterable by press and material.
How the 115 constructions are organised, and which family fits your press.