Most label failures start in the adhesive, the substrate match, the liner, or the coating, while the print itself holds up. Each failure mode has a cause you can diagnose, and a complete spec that lists the container substrate, full temperature range, environmental exposure, application speed, and shelf life prevents most of them.
When a label fails on the line, the print is usually fine.
The failure is a corner lifting off the container, adhesive residue left behind when the label is removed, face stock that wrinkles after 24 hours in a refrigerated warehouse, or a label that applies perfectly in the morning and starts flagging by afternoon when the line warms up.
Each of these failures has a cause you can diagnose. This guide covers the most common failure modes, how to tell which one you’re dealing with, and what it takes to spec a label that won’t fail in your application environment.
The anatomy of a pressure-sensitive label
A pressure-sensitive label (sometimes called a PS label or peel-and-stick label) consists of three components bonded together:
The face stock: The top layer, what you see. This is what gets printed on. Face stocks can be paper, film (polypropylene, polyester, polyethylene), or specialty materials. Face stock selection affects appearance, durability, print quality, and how the label handles environmental conditions.
The adhesive: The middle layer, what you don’t see. This is what connects the label to the container. Adhesive selection is the most common source of label failure. Different adhesive formulations have different performance characteristics: temperature range, tack level, removability, solvent resistance, and behavior on different substrates.
The liner: The bottom layer, the release backing the label sits on until application. Liner selection affects how the label feeds through automated application equipment and how it releases from the roll.
Buyers tend to focus on the face stock because it’s the part they can see, but most failures start in the adhesive, where the environmental stress lands.
The five most common label failure modes
1. Adhesive failure due to temperature mismatch
Pressure-sensitive adhesives are formulated for specific temperature ranges. An adhesive designed for ambient temperature application will lose tack in cold environments. An adhesive formulated for cold application may not cure properly at higher temperatures.
How to identify it: Labels apply and adhere initially, then lift at the corners or edges after exposure to temperature change. The face stock is intact; the adhesive is failing. Common in refrigerated beverages, frozen food products, and anything that moves between ambient and cold storage.
The fix: Match the adhesive to the lowest temperature the label will encounter in its life cycle, not just the application temperature. Cold chain products need adhesives formulated and tested for refrigerated or frozen conditions, on the specific container substrate.
2. Substrate incompatibility
Adhesive tack varies widely by substrate. High-density polyethylene (HDPE) and polypropylene (PP) are low-surface-energy plastics, meaning adhesives don’t bond to them as readily as they do to glass or higher-energy substrates. Labels that work fine on glass bottles may fail on the same product in a plastic container.
How to identify it: Labels fail on plastic containers but not on glass or metal versions of the same product. Adhesive residue is minimal or nonexistent when the label is removed; the bond never fully formed.
The fix: Specify an adhesive formulated for low-surface-energy substrates. This is a different formulation than a standard permanent adhesive and needs to be called out explicitly when ordering.
3. Label flagging due to curved surface application
When a pressure-sensitive label is applied to a curved surface, the label edges are under tension. If the label material doesn’t have sufficient flexibility, or the adhesive doesn’t have sufficient tack to hold against that tension, the label flags, lifting at the edges.
How to identify it: Labels apply flat and adhere correctly on flat surfaces, but the corners or edges lift on cylindrical containers, particularly on smaller diameter containers where the curvature is tightest.
The fix: Face stock flexibility and adhesive formulation both matter here. Conformable face stocks (softer films, certain paper constructions) handle tight curvatures better than rigid films. The adhesive may also need adjustment for the specific container diameter.
4. Liner or release problems on automated application equipment
Automated label application equipment is sensitive to liner weight, release force, and label construction. Labels that apply fine by hand can misfeed, double-apply, or fail to transfer on high-speed equipment.
How to identify it: Manual application works; automated application doesn’t. Misfeed rates increase at higher line speeds. Labels stick to the liner and fail to transfer to the container, or two labels feed at once.
The fix: The liner specification needs to match the application equipment, so have this conversation with your label supplier before you order. Different equipment has different liner weight and release force requirements. A supplier who has worked with your equipment type will know this. One who hasn’t will learn it on your run.
5. Print failure due to incompatible coating or laminate
Occasionally, what looks like a print failure is actually a coating or laminate failure. Labels exposed to sanitizers, solvents, or oils can show ink or coating breakdown that looks like a print problem.
How to identify it: Labels are fine immediately after application. Print quality degrades over time, particularly in areas exposed to chemicals or moisture. The label stays physically intact while the print breaks down.
The fix: The print system (ink type, coating, laminate) needs to match the exposure environment. For labels in food processing facilities, chemical-resistant overcoats are standard. For outdoor applications, UV-resistant coatings extend print life.
How to read a label specification (and what’s usually missing)
Most label spec sheets cover dimensions, face stock type, adhesive type, printing requirements, and quantity. That’s a good start, but most specs leave something out.
What’s missing from many label specs:
Container substrate and surface energy. The container matters as much as the label. If your spec says “BOPP label, permanent adhesive” without specifying what it’s being applied to, the supplier is guessing on adhesive selection.
Application temperature range. List the full temperature range the label will experience in its life cycle (production floor, warehouse, retail case, consumer home), along with the temperature at application.
Environmental exposure. List any moisture, chemicals, UV exposure, or abrasion the label will face. These are the everyday conditions the label lives in.
Application speed and equipment. High-speed automated application has different requirements than hand-application or semi-automated lines. A label built for 100 labels per minute may not perform the same at 400 per minute.
Expected shelf life. A label on a product that will be consumed in 30 days can be specified differently than one that will sit in a warehouse for two years.
A complete spec gives your supplier the information they need to make the right choices. An incomplete spec is a guess, and the first production run is where you find out what they guessed wrong.
Specialty label types: when standard pressure-sensitive isn’t the answer
Not every application calls for a standard pressure-sensitive label. A few specialty types come up regularly:
Shrink sleeves: Full-body or partial-coverage sleeves that conform to the container shape when heat is applied. Used when full 360-degree coverage is needed, when the container shape doesn’t support flat label application, or when tamper-evidence is required. Shrink sleeves require different production equipment, different substrate types, and a production process that includes a shrink tunnel.
Flexible packaging: For pouches, bags, and other soft packaging formats. Flexible packaging requires printing directly on the substrate (or on a laminate that becomes the packaging), not applying a label to a container. The substrate selection, sealing requirements, and graphics registration standards are all different from label production.
Promotional and specialty labels: Extended content labels (ECL) that fold out for additional information, scratch-off labels for promotions, QR code labels for serialization, and others. These require specific construction methods and are often combined with standard pressure-sensitive production.
Cold foil and embossed labels: For premium retail applications where visual differentiation matters. Cold foil and high-end embossing are not Label Systems Inc.’s primary capability. If your application requires them, we’ll tell you upfront and can refer you to a supplier better suited for it.
How label pricing works
Label pricing rarely comes from a rate card. It depends on several variables that interact with each other.
The primary cost drivers:
Substrate cost. Film face stocks cost more than paper. Specialty films (polyester, polyethylene, certain synthetics) cost more than standard BOPP. Adhesive type also affects material cost.
Print process and color count. Flexographic printing is economical at longer runs because the plate cost is spread across more units. Digital printing has no plate cost but higher per-unit cost at long runs. Color count affects plate cost and press time.
Run length. Longer runs have lower per-unit costs because setup costs (plates, makeready, color calibration) are spread across more units. Short runs are more expensive per unit but don’t require long-run minimums.
Finishing. Die cutting, lamination, cold foil (where applicable), special coatings, and other finishing operations add to cost and production time.
Quantity and frequency. Clients who order consistently and in predictable volumes are easier to plan for, and that predictability has value. Label Systems Inc. works with clients on inventory management programs that allow us to pre-stage and hold inventory, reducing lead times and improving cost per unit.
If you’re comparing label quotes and one is well below the others, ask what’s different about the substrate, adhesive, and production process. A low quote sometimes reflects a lower-spec label, one that works in controlled conditions and fails when the environment changes.
The bottom line
Labels fail for specific, diagnosable reasons. Most failures are preventable with the right spec, the right substrate match, and a supplier who understands your application environment before the label ships.
Label Systems Inc. has held a 1-2% reject rate over 50+ years by building every label to its own spec instead of treating it as a catalog item.
If you're experiencing label failures or building a spec for a new application, call 800.220.9552 or request a consultation at labelsystemsinc.com/contact. We'll look at your application, tell you what we'd change, and whether we're the right supplier for it.
FAQ: label troubleshooting and specification
My labels were fine for two years and now they're failing. Nothing changed on my end. What happened?
Something changed, either in your production environment, your container supply, or your label supplier's raw material source. Adhesive and face stock formulations can change when a supplier switches raw material sources, even if the product specification number stays the same. Ask your label supplier for a material change notification, a formal notification they'll send when any component of your label spec changes. If they can't provide one, that's a gap.
How do I spec a label for a container I haven't used before?
Provide your label supplier with the new container substrate, the application conditions, and the label's intended life cycle. Request adhesion testing on the actual container before you commit to a production run. A supplier who won't run application testing before you order is just taking orders.
What's the actual difference between permanent and removable adhesives?
Permanent adhesives are formulated to form a lasting bond that increases over time and is difficult to remove without damaging the label or surface. Removable adhesives are formulated to release cleanly without residue when removed. Neither is universally better; the right choice depends on whether the label needs to be removed in your application (price tags, temporary labels) or not.
Why do my labels look different from run to run?
Color variation between runs is usually a press calibration issue or a difference in substrate lot. Small variations in face stock brightness or coating can affect how colors reproduce, even when the ink formulation is identical. ISO 9001:2015 quality management systems include color consistency controls (press calibration, color matching standards, and run approval processes) that reduce run-to-run variation.
What's a realistic minimum order quantity for custom labels?
Minimum orders start at $250. Custom materials and specifications will determine the minimum order quantity.