Vinyl has become the default answer to "which sticker survives water", but for packaging it is often the wrong choice. A label on a bakery bag, a chilled deli pot or a courier box meets different problems: porous kraft, condensation, cold, oil, and a recycling bin at the other end. This guide compares sticker paper, polypropylene (PP), polyethylene (PE), polyester (PET) and vinyl (PVC), and then matches them to the adhesive that actually decides whether the label stays on. It is part of the custom printed stickers and labels hub.
Is vinyl better than sticker paper?
Vinyl is better when the label must survive prolonged water, outdoor weather or abrasion. Paper is better when the pack is dry or only briefly damp, when cost matters, and when the pack is meant for paper recycling. For most food packaging labels the real choice is between coated paper and PP film, not paper and vinyl.
How the three compare on packaging:
- Vinyl (PVC) is durable and conforms well to curved surfaces, but it contains chlorine, is the least compatible with recycling programmes, and is rarely necessary on food packaging.
- Paper is lowest in cost, prints clearly and is usually the most recycling-friendly, but absorbs moisture and oil unless it has a protective coating or laminate.
- PP film is water and oil resistant, prints crisply, and comes in white or clear; it is the usual step up from paper for chilled and damp use.
If a supplier proposes vinyl for a chilled or kraft application, ask what it solves that PP or coated paper would not.
What face materials are available?
The main face materials for packaging labels are coated and uncoated paper, kraft, PP, PE, PET and PVC. Each is supplied on a release liner and chosen for print quality, strength, water resistance and behaviour at end of life.
| Face material | Typical character | Best for | Watch out for |
|---|---|---|---|
| Coated paper (semi-gloss or gloss) | Smooth, bright print; typically around 70-90 g/m² | Dry or lightly damp packs, cartons, retail | Wrinkles with moisture; oil staining without coating |
| Uncoated paper | Natural, matt, absorbent | Handwritten or thermal-transfer labels, dry goods | Ink soaks in; limited water resistance |
| Kraft paper | Brown, rustic; blends with kraft bags | Bakery bags, craft and artisan brands | Bright colours dull on brown; fibres vary |
| PP (BOPP), white | Opaque, water and oil resistant, typically around 50-60 µm | Chilled pots, bottles, wet or oily packs | Plastic layer; can lift on tight curves |
| PP, clear | "No-label look" on glass or film | Premium jars and bottles | Needs good surface prep; adhesive shows on bubbles |
| PE | Soft and flexible; typically from about 50 µm and up | Squeezable tubs, tubes, soft pouches | Harder to print and cut; softer feel |
| PET (polyester) | Stiff, heat-stable, durable | Technical or heated environments | Cost; poor conformability on curves |
| PVC (vinyl) | Very durable, conformable | Outdoor, abrasion, equipment labels | Chlorine content; recycling compatibility |
Thicknesses are indicative; the supplier's datasheet for the chosen material governs. Thicker film resists tearing but conforms less well to curves.
What does a "waterproof" label really mean?
A label is rarely fully waterproof. It is water-resistant to a degree set by the face material, the print protection and the adhesive together, and edges are usually the weak point. A film face with a suitable adhesive withstands splashes, condensation and wiping; a plain paper label does not.
Check three layers when someone says waterproof:
- Face: paper absorbs water through the cut edge unless sealed; film does not.
- Print: inks and varnish must be rated for the exposure; abrasion or alcohol wipes can remove unprotected print.
- Adhesive: water can creep under the edge and lift the label, particularly on cold, wet surfaces.
Ask for the condition in plain terms (chilled with condensation, wiped with sanitiser, submerged in ice water) rather than a general waterproof rating, and test samples under that condition. Immersion is a harder test than condensation, and few paper labels pass it.
Permanent, removable or freezer-grade adhesive?
Use permanent adhesive by default, removable adhesive when the label must come off cleanly, and freezer-grade adhesive when the label is applied cold or stays frozen. The face material sets how the label looks and copes with moisture, but the adhesive decides whether it stays on that surface at that temperature.
| Adhesive type | Behaviour | Typical use |
|---|---|---|
| Permanent | Builds a strong bond; label tears or leaves residue on removal | Bag seals, box closures, product labels |
| Removable | Lower tack; peels without damage or heavy residue | Promotional stickers on retail packs, price labels |
| Repositionable or peelable | Low tack, can be moved and reapplied | Seals on tissue paper and gift wrap |
| Freezer-grade | Formulated to bond at low application temperature and stay bonded in frozen storage | Frozen foods, chilled items applied straight from the fridge |
Standard adhesives are usually specified for application above a minimum temperature, often a few degrees above freezing, and may not grip a cold, frosted surface at all. If labels are applied in a chilled kitchen or onto items taken from the freezer, specify a freezer-grade adhesive and check the application temperature on its datasheet. Most adhesives also build strength gradually, so give them time before judging.
The surface matters as much as the temperature: kraft and recycled board are porous and dusty and need adhesives designed for rough surfaces; low-energy plastics such as PE and PP packaging need adhesives designed for them.
Which material suits which packaging job?
Match the label to the worst condition it will meet, not the average one. The table gives starting points; confirm with samples on your actual pack.
| Packaging job | Starting-point face stock | Starting-point adhesive |
|---|---|---|
| Bakery or sandwich bag seal, dry | Kraft or coated paper | Permanent, suited to porous paper |
| Hot takeaway bag closure (steam, grease) | Coated paper or PP; see tamper-evident takeaway bags for security constructions | Permanent, tested at delivery temperature |
| Chilled deli pot or salad bowl | White PP or coated paper | Permanent, cold-tolerant |
| Frozen product | PP film | Freezer-grade |
| Squeezable tub or soft pouch | PE or thin PP | Permanent, for flexible films |
| Glass jar, premium look | Clear or white PP, or textured paper | Permanent; clean glass |
| Tissue paper or gift wrap seal | Paper | Peelable or low-tack permanent, tested not to tear the paper |
| E-commerce box or mailer closure | Paper or PP | Permanent, suited to board; check cold or damp exposure in transit |
| Retail promotion on another brand's pack | Paper or PP | Removable |
These are decision aids, not specifications. One takeaway bag can carry hot, greasy food and a cold drink running with condensation at the same time, and the closure label has to cope with both.
Do adhesives and inks matter for food safety?
They can. Labels normally sit on the outside of a pack, away from food, but adhesives and inks can migrate through thin or porous packaging into food, particularly fatty or dry foods in direct contact with the inside surface behind a label. If a label is applied over a thin film, an unglazed paper or a wrapper next to unprotected food, ask the supplier about suitability and supporting documentation.
The general EU framework for materials in contact with food is Regulation (EC) 1935/2004, with detail depending on material type; GB retains an equivalent framework. The practical rules are in food-contact packaging compliance in the EU, UK and US. Keep adhesive labels off direct food surfaces and off any area that touches unwrapped food.
How should you test labels before committing?
Test samples on the real pack, in the real condition, for the real duration. A lab datasheet cannot substitute for your bag paper, your kitchen and your delivery route.
- Apply at the actual application temperature and surface condition (cold, damp, dusty).
- Leave overnight before judging adhesion.
- Run the pack through its real route: fridge or freezer, delivery bag, condensation.
- Rub, flex and wipe the printed surface with the cleaning agents staff use.
- Try to peel and reapply to see how obviously the label shows removal.
- Check that the pack opens and recycles as intended; a label that tears the paper on removal may make a bag harder to reuse or recycle.
Record the result per pack type. A chain with several pack families usually needs two or three label constructions, not one.
Does the choice of label material affect recycling?
Yes. A paper label on a paper pack is the simplest case, and a film label on a plastic pack should be chosen so it separates cleanly or is compatible with the pack material. Details on adhesives, wash-off labels and design for recycling are in labels and recyclability; finish choices that add material are in label finishes.
What to send for a quotation
Send the pack the label goes on (or a sample), the condition it must survive, and the way it is applied. The specification should include:
- Surface material and finish (kraft, coated board, PP tub, glass)
- Conditions: dry, damp, oily, chilled, frozen, outdoor
- Application temperature and method (by hand, dispenser or machine)
- Required adhesive behaviour: permanent, removable or freezer-grade
- Preferred face material, or "supplier to propose" with the conditions above
- Print: colours, finish and any wipe or abrasion requirement
- Destination markets and any recyclability or documentation requirement
Roll and sheet formats and sizes are covered in roll labels vs sheet stickers. When the specification is ready, send it to 9 Packaging along with photographs of the pack surface and a note on how the label will be applied; final materials are confirmed at quotation and technical review. The packaging RFQ guide covers the rest of a complete request.