A stock square perfume flacon in 30 / 50 / 100 ml starts around 500–1,000 pieces undecorated on a public mould, about 2,000 screen-printed and 3,000–5,000 sprayed; your own square shape is a glass mould at USD 350–555 per set (USD 2,200–4,450 for a 4–8 cavity set, full programmes commonly USD 8,000–20,000), 10,000+ pieces and a 90–120 day programme. Caps: sprayed ABS from 2,000–5,000, Surlyn (glass-like ionomer) and wood in the low thousands as a typical partner-factory range, zamac (zinc alloy) plated or magnetic at 5,000–10,000, with plating line minimums around 10,000. The neck is the same as a round flacon — FEA 15 crimp or 15/415 / 18/415 screw — so the pump does not change.
Why square is harder than round
Glass wants to be round. A cylinder blows to an even wall; a square parison has to fill four corners, so the glass is thinner at the corners and thicker at the face centres unless the mould and the forming method are chosen for it. Three consequences drive everything below. Corners concentrate stress, so a square flacon is drawn with radiused internal corners and annealed properly — internal stress is checked on a polariscope to GB 4545 and thermal shock to GB/T 4547 (55°C to 20°C water), because a rushed anneal is what makes a square bottle crack on the shelf weeks later. Flat faces show every flaw: clear perfume glass is rejected harder than jar glass, with the A face allowed only 1–2 specks or bubbles of ≤0.5 mm and none on the logo, which is why sprayed minimums sit above skincare glass. And thick bases are press-formed: the heavy square base that makes the shape feel expensive is formed by press or narrow-neck press-and-blow, not simple blow-blow. The glass grades, forming methods and defect limits are on glass bottle specifications.
Stock square shapes: start here
Partner glassworks hold public-mould square and rectangular flacons in the commercial sizes, in super-flint or crystal-white glass for a clear bottle and standard flint where the bottle will be sprayed. They carry the same necks as round stock — FEA 15 crimp or 15/415 / 18/415 screw — so the pump, collar and cap references from a round programme carry straight over. Dimensions below are the typical partner-factory range for a square flacon with its cap; a square of the same capacity is shorter and broader than a cylinder.
| Size | Typical square flacon (mm, with cap) | Neck | Indicative minimum, stock clear | Notes |
|---|---|---|---|---|
| 30 ml | 35–45 across × 80–100 tall | FEA 15 crimp or 15/415 screw | 500–1,000 pcs | Entry EDP; thin base unless press-formed |
| 50 ml | 45–55 across × 95–120 tall | FEA 15 crimp or 15/415 / 18/415 screw | 500–1,000 pcs | The hero size; most stock square moulds exist here |
| 100 ml | 55–65 across × 110–140 tall | FEA 15 crimp or 18/415 screw | 500–1,000 pcs | Flagship; thick base by press or NNPB forming |
| 10 ml travel square | 15–18 across × 80–95 tall | 15/415 screw | 500–1,000 pcs | Rarer as a square; usually matched by cap and colour instead |
Stock samples are usually free with courier at your cost, in 7–10 days; production on stock glass is 15–25 days at the factory gate. The full route list is on perfume bottles wholesale vs custom.
Custom square moulds: cost, minimum, time
If no stock square gives the proportion you want, the mould itself is cheap; the glass run is not. From mould cost and ownership and the perfume bottle supplier page:
| Item | Figure | What it means for a square |
|---|---|---|
| Hand-blown mould | RMB 2,500 ≈ USD 350 per set | Artisan and sculptural squares; wider tolerances, slower |
| Automatic-line mould, single cavity | RMB 4,000 ≈ USD 555 per cavity | The standard for a production square flacon |
| 4–8 cavity automatic set | RMB 16,000–32,000 ≈ USD 2,200–4,450 | Needed for an economic run; lowers unit cost above the floor |
| Full custom flacon programme, as commonly quoted | USD 8,000–20,000 tooling | Mould, trials, first shots and a 500-piece trial run at ≥95% yield |
| Minimum pieces | 10,000+ per shape (some short-run lines from 5,000); made-to-order furnace 30,000–200,000 | Anyone quoting a 500-piece custom square is quoting a stock shape with your label |
| Tooling time | 45–60 days, then 30–60 days made-to-order glass | Plan a 90–120 day programme; ×1.3 buffer; +15 days across Chinese New Year |
| Payment and ownership | 30/40/30; brand owns the mould, transferable on notice | Write the six clauses in before the first shot |
Two square-specific drawing checks before steel is cut: label panel flatness, because a face that bows even slightly prints badly and shows in a screen-print pass, and base stability on a filling line, because a tall square with a small footprint tips. Ask for the DFM review to state both.
Decoration minimums on a square
A square is counted as a shaped bottle, and that changes two numbers. Screen print on a cylinder counts as one colour per pass; on a square it is two or more, because each face is a registration. Print position on 30 ml and over is held to ±0.75 mm vertical and ±0.25 mm tilt — visible on a flat face where it would hide on a curve. Spray coating is set up per shape, so a square 50 ml and a round 30 ml in one colour are two set-ups. The process rules are on decoration process comparison.
| Process | Indicative minimum | Indicative add-on | Square-specific note |
|---|---|---|---|
| Pressure-sensitive label or sleeve | ~100–500 | Lowest of all routes | Flat faces take a label beautifully; the honest first-run route |
| Screen print | ~2,000 | RMB 0.1 per colour ≈ USD 0.014 | One face = one colour; four faces = four; keep print + hot stamp to ≤2 passes |
| Hot stamp | Small one-off die | RMB 0.4 per design ≈ USD 0.055 | Excellent on a flat face; ≤0.5 mm² foil loss on the tape test |
| Frosting (acid-etch) | Moderate; usually with the sprayed run | Per bottle, by size | Stops below the thread; no bright spots on the A face |
| Spray coating, matte / gloss / gradient | 2,000–5,000 per shape; 3,000–5,000 on clear perfume glass | RMB 0.5–1.1 ≈ USD 0.07–0.15 | Gradient reads strongest on a square; coverage checked corner to corner |
| Electroplating / vacuum metallising (caps, collars) | ~10,000 | Medium–high; ~6 h per cycle | Exterior only; never in contact with the juice |
Cap options: Surlyn, wood, zamac, ABS, aluminium
On a square flacon the cap is the design. It usually repeats the square, which raises one engineering point a round cap never has: orientation. On a crimp neck the collar is fixed, so a square overcap is indexed to it; on a screw neck the cap must stop square to the body every time, which means an indexing feature on the collar or an overcap that sits on a fixed collar rather than on the thread. Specify it, or the cap will land at a different angle on every bottle.
| Cap material | Character | Indicative minimum | What to test |
|---|---|---|---|
| Sprayed ABS | Light, any colour, cheapest route to a custom tone | 2,000–5,000 sprayed | Spray adhesion (3M 810 cross-hatch), pencil hardness ≥2H, colour ΔE under D65 |
| Surlyn (ionomer) | Glass-like clarity in thick sections, warm hand-feel, high impact; over-moulds onto glass; light transmission about 80–92%; stays tough below −76°C; FDA-compliant grades; the dearest common cap resin | Low thousands on a stock Surlyn cap; custom shape needs an injection tool (typical partner-factory range) | Batch-to-batch colour control, which is Surlyn's known weak point; pull-off force |
| Wood (with plastic or metal insert) | Natural, artisanal positioning; each cap unique in grain | Low thousands (typical partner-factory range) | Insert bond, moisture stability, laser or hot-stamp logo adhesion |
| Zamac (zinc alloy) | Heavy, cold to the touch; plated gold, silver, rose gold; the luxury standard, recommended above about USD 50 retail | 5,000–10,000 plated or magnetic; plating line ~10,000 | 50 open/close cycles on a force gauge; nickel-release data for the EU; plating exterior only |
| Anodised aluminium | Hard, dyed metal finish; light; matches an anodised collar | Stock silver / gold lower; ~10,000 custom tone | Anodic film hardness (about HV300; hard-anodised HV500); batch colour against a control sample |
| Magnetic close (any shell) | Satisfying snap; hides the collar | 5,000–10,000 | Engage and release force across 50 cycles; not too tight, not loose in transit |
Why Surlyn on perfume caps. It is an ethylene–acrylic ionomer that moulds thick, water-clear sections without the sink marks and brittleness of acrylic, feels warm rather than cold, and can be over-moulded directly onto a glass flacon so cap and bottle read as one block — the effect most square 'ice-cube' flacons are built on. The trade-offs are price and colour consistency between batches, so a tinted Surlyn cap needs a control sample and an agreed ΔE. Why zamac. Weight. The cap-to-bottle weight ratio is what makes a fragrance feel expensive in hand, and zinc alloy delivers it; it is plated, so the plating rules apply — 30+ metals possible, ABS or zinc as the substrate, exterior only, no nickel on touch surfaces for the EU. Why wood. Positioning, at the cost of tolerance: every cap is different, so the insert that actually grips the collar is plastic or metal and the wood is the shell.
Putting the square together
Write it as one line: 50 ml stock square flacon, super-flint, press-formed base, FEA 15 crimp, 0.1–0.2 ml fine-mist pump, stock silver collar, square Surlyn (or zamac) cap indexed to the collar, hot-stamped logo, rigid box; 2,000 sets. The set is QC'd together — pump on bottle, cap on collar, flacon in insert — and signed against the pack tests on QC standards: atomisation, dose within 0.02 g, ≥1,500 actuations, vacuum leak at −0.08 MPa for 15 minutes, 1.5 m drop capped and filled, thermal cycling 48°C / −15°C. Sizes are on the perfume bottle sizes guide and the cosmetic bottle size guide, the ml-to-oz and gram conversions for the label on the unit converter, the per-component minimums on the MOQ index, the formats on fragrance bottles, and the supplier questions on how to evaluate a China packaging supplier.
Vella is a Guangzhou-based beauty packaging solutions provider — a sourcing partner, not a factory — that helps indie and emerging beauty brands specify, source, sample, quality-control and ship complete fragrance packaging systems from vetted partner factories operating to ISO 22716 / GMP. For a square programme the flacon, the cap and the collar are approved side by side in one hand before production; the system is on fragrance packaging solutions and a brief can go to contact.
Frequently asked
Designing a square flacon?
Send the sketch; we quote glass, cap and collar as a set.
Size, quantity, crimp or screw if you know it, and the cap material you have in mind. We reply within 24 hours with stock square options, the custom-mould route with tooling in USD, and cap minimums.
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