They are the pre-cut form of high-bond double-sided tape — the acrylic foam family used where tape genuinely substitutes for screws and rivets — supplied as discs, pads, strips, and custom outlines on a liner rather than on a roll.

The applications mirror the parent tape's: mounting signage and nameplates, bonding trims and badges to vehicles and appliances, fixing hooks, rails, and holders to walls and furniture, securing panels and stiffeners in fabrication, and attaching feet, bumpers, and spacers to products. In each case the shape is cut to the exact footprint of the part being bonded — a disc for a coat hook's base plate, a rectangle for a sign standoff, a picture-frame outline for a panel's perimeter.

The die-cut format is what makes tape-bonding a production process rather than a craft. Every part receives an identical adhesive footprint in one peel-and-place motion: no scissors, no measuring, no operator judgement about how much tape a bracket deserves, and no exposed sticky edges hanging past the part to collect dirt. For assembly lines, shapes arrive nested on rolls or sheets ready for jigs and even automated placement; for site work, a strip of correctly-sized pads in the toolbox replaces a roll, a knife, and guesswork.

Within their design envelope, genuinely yes — the acrylic foam tape family behind these shapes is the same technology used to bond exterior automotive trim, architectural panels, and elevator interiors, applications that shrug off vibration, weather, and years of load. Typical high-bond foam tapes hold on the order of several hundred kilopascals in tensile pull and support permanent static shear loads when sized correctly; manufacturers publish holding power per area, and the working rule of thumb for permanent loads sits around the low kilograms per 100 mm² region depending on grade.

The physics behind the honest 'yes': the viscoelastic foam core spreads load across the entire bonded footprint instead of concentrating it at screw points, absorbs shock and vibration that would loosen fasteners, and keeps building adhesion for hours to days after placement as the acrylic wets out the surface.

The envelope matters equally. Tape shapes excel at static loads spread over adequate area on smooth, sound surfaces — signs, trims, hooks, panels. They are the wrong answer for concentrated pry-off (peel) loads, for safety-critical overhead mounting without mechanical backup, for crumbly or flaking substrates (the tape holds; the paint releases), and for surfaces that cannot be cleaned. Sizing is the designer's honest lever: double the pad area and the safe load doubles — which is exactly why the die-cut format, with its defined footprint per part, makes tape-bonded designs predictable enough to certify.

Preparation is nine-tenths of the bond, and with high-bond acrylics it follows a strict, short ritual:

1. Clean with the right solvent. Wipe both surfaces with a 50:50 isopropyl alcohol/water mix — the industry-standard degrease for tape bonding — using a clean, lint-free cloth, and let it flash off fully. Household sprays and white spirit leave films; avoid them. Oily metals may need a stronger degrease first, finished with the IPA wipe.
2. Check the surface is bondable. The pad holds whatever it touches — if that is flaking paint, chalky render, or loose anodising, the bond is only as strong as that skin. Sound, adhered finishes are fine; friable ones need removing or sealing.
3. Prime the difficult materials. Bare low-energy plastics (polyethylene, polypropylene), powder coatings, and some paints resist even aggressive acrylics; an adhesion promoter wiped on first transforms the result. Glass in wet environments appreciates a silane primer.
4. Work at a sensible temperature. Apply between roughly 15 °C and 35 °C; cold surfaces make the adhesive sluggish and condensation-prone. Cold-weather work means warming parts first.
5. Place once, then press hard. Position accurately — high-bond pads do not reposition — then apply firm pressure (roughly 100 kPa; a firm thumb or roller) for several seconds across the whole pad. Wet-out is pressure-driven: no pressure, no strength.

Then respect the cure curve: the joint reaches roughly half strength within the first hour and full strength in about 72 hours — load it gently at first, fully after cure.

Thickness is not padding — it is the engineering dimension of the joint, doing three jobs:

1. Bridging the gap between imperfect surfaces. Real parts are not flat: powder-coated plates bow, extrusions ripple, walls undulate. A thin film tape touches only the high spots; a foam pad of adequate thickness conforms into the low spots so the entire footprint carries load. The rougher or less flat the pairing, the thicker the pad needed for full contact — typical shapes run from around 0.4 mm up to 2 mm and beyond for irregular surfaces.
2. Absorbing movement between dissimilar materials. A metal sign on a masonry wall, an acrylic badge on a painted steel door — each side expands at its own rate with temperature. The viscoelastic foam core stretches and recovers across that differential; a joint bonded too thin transmits the movement as shear stress at the adhesive interface and fatigues. Outdoor and dissimilar-material bonds are precisely where the thicker grades are specified.
3. Distributing shock. Thicker cores damp impacts and vibration — the reason foam-taped exterior trim survives car washes and door slams.

The trade-offs that stop 'thicker is always better': thicker pads introduce a visible bond line, allow slightly more initial movement under sustained load, and cost more per piece. The selection logic mirrors the manufacturers': as smooth, flat, and similar as the surfaces are, go thin; as rough, bowed, outdoor, or dissimilar as they are, go thick — and when in doubt between two, the thicker pad fails more gracefully than the starved one.

High-strength pads are permanent by design — removal is possible, but it is disassembly, not peeling, and the honest answer about damage is 'it depends on the surface, not the tape'.

The working method:

1. Cut the joint, don't pry the part. Slice through the foam core with a length of thin wire, dental floss, or a fine blade worked behind the part with a sawing motion. Prying levers the substrate — this is how plasterboard faces and veneers get ruined, and it is unnecessary once the core is cut.
2. Remove the residue in shear. The foam left on each surface rolls off under a thumb or a plastic scraper; stubborn films respond to citrus adhesive remover or IPA, softened further by gentle heat from a hot-air gun on low. Steel blades stay in the drawer on painted and coated surfaces.
3. Expect the truth about substrates. On glass, metal, and sound factory finishes, complete clean removal is the normal outcome. On decorated plasterboard, the bond is often stronger than the paint — the pad comes away wearing a paint skin (repaintable, but real). On brittle or aged finishes, assume the finish will follow the tape.

Design guidance follows directly: where planned removability matters, either specify the removable/stretch-release members of the mounting-tape family instead of high-bond grades, or bond to a sacrificial intermediate (a plate or clip that stays). And a removed pad is never reused — the joint's strength lived in its first pressure-driven wet-out; re-bonding means a fresh shape, which is exactly why they come in packs.