TITLE: Single Wall Paper Cup 8oz: Grammage, Coating and What Buyers Get Wrong
SLUG: single-wall-paper-cup-8oz
META: An 8oz single wall paper cup lives or dies by grammage and coating. Cup stock weights, PE vs water-based lining, MOQ and FOB Qingdao pricing, explained.
An 8oz single wall paper cup is the cheapest hot drink cup you can import in volume, and the one we get the most complaint emails about. Most complaints: the cup goes soft before the latte is finished, the seam leaks at the bottom, or the logo looks dull because the paper was too thin. None of that is random. It comes from choices made at the quotation stage. We run a converting operation in Qingdao, around 2,500 to 3,000 tonnes a year.
What “single wall” actually means in an 8oz cup
A single wall cup is one layer of cup stock, formed into a truncated cone, with a bottom disc sealed in and a rolled rim at the top. No air gap and no corrugated wrap.
8oz is roughly 237ml, about 240ml working volume in most moulds. In our tooling that lands at a top diameter of 80mm, bottom diameter 56mm, height 92mm, with a 10mm curled rim. Sleeves, lids and carrier trays are tooled around those numbers. Trim the top diameter 2mm and lids in stock stop fitting.
Single wall is what most cafés, convenience stores and event caterers order for hot coffee and tea. It is not a cold cup. Iced drinks work through the paper in 10 to 15 minutes of condensation.
Grammage: the number that decides everything
Cup stock for a single wall 8oz cup usually runs 210 to 280 gsm. Typical results from our sample room:
| Stock weight | Typical use | Realistic hold time (hot, 85°C) | Notes |
|---|---|---|---|
| 210–230 gsm | Water, short-serve espresso, samples | 20–30 min | Cheapest tier; goes soft fast if squeezed |
| 240–250 gsm | Standard café hot cup | 45–60 min | The volume seller for most importers |
| 260–280 gsm | Tea, hot chocolate, catering | 75–90 min | Heavier, stiffer, better print |
| 280+ gsm | Premium retail, espresso bars | 90+ min | Diminishing returns; cost climbs fast |
Two buyers can order “8oz single wall” and get cups that behave nothing alike: one is 215 gsm, the other 260 gsm. A headline price quoted without grammage is not comparable.
Our rule after enough returns: for drinks above 80°C held over half an hour, go 250 gsm or heavier. Under 230 gsm you are selling a sample cup.
PE coating vs water-based coating
The lining is the other half of the spec. A single wall cup needs a barrier or the paper drinks the coffee.
Polyethylene (PE) at 15 to 18 gsm inside is still the default worldwide. It seals reliably at high speed, takes hot liquid and is cheap. The catch is recyclability: a PE-lined cup is hard to repulp in standard mills, and a growing number of EU and Australian municipal programs refuse them outright. Check the local accepted-materials list before committing to a container load.
Water-based acrylic coatings cost roughly 8 to 15 percent more per cup, run slower, and need a tighter seal window in our experience. In exchange the cup is repulpable in mills that accept coated stock, and it fits the direction PPWR (EU) 2025/40 is pushing the market. Water-based is better positioned for 2027 onward, PE is still cheaper and more forgiving today.
Neither lining makes a single wall paper cup home-compostable. If compostability is the selling point of your range, bagasse pulp tells a cleaner story than coated paper; our bamboo fiber tableware page covers the material, and the certifications page lists what we hold.
Lid fit and the tolerance nobody checks
Nearly every “the lids don’t fit” email traces back to rim tolerance, not to the lid. A rolled rim on an 8oz cup is typically 10mm, and the outside diameter of that roll is what matters. Our line holds ±0.3mm. Some hold ±0.8mm. Both look fine on a table. Only one works at 40 cups a minute in a drive-through.
If cups and lids come from different suppliers, ask both for the same drawing number and check the rim OD callout.
Printed 8oz cups: where thin stock shows
This is a grammage problem more often than an ink problem. On 210 gsm stock, full-bleed flexo looks washed out and fibres show through dark solids. At 250 gsm and up the surface is smoother and the same artwork holds its edges. Print on 250 gsm minimum and keep dark panels under a third of the face.
Setup points that come up repeatedly:
- Bleed 3mm past trim, seam clear of key text
- Bottom 15mm left light, where the forming ring creases the stock
- Minimum 6pt type; smaller fills in on flexo
- Pantone matched under D50 light, not on a phone screen
Food-contact compliance sits alongside this. We work to FDA 21 CFR for US stock and LFGB plus EU 10/2011 for Europe, and can supply migration test reports per batch. Ask for the report number, not the certificate image.
MOQ, lead time and what an 8oz cup costs FOB Qingdao
Indicative numbers from our quotations, order-of-magnitude.
| Item | Typical range |
|---|---|
| 8oz single wall, 250 gsm, PE lined, plain | USD 0.018–0.028 per cup |
| 8oz single wall, 250 gsm, water-based lined | USD 0.022–0.033 per cup |
| 8oz single wall, 280 gsm, 1–2 colour print | USD 0.030–0.045 per cup |
| MOQ, plain stock | 50,000 pcs |
| MOQ, custom print | 100,000 pcs per design |
| Production lead time | 20–30 days after artwork approval |
| 40HQ capacity (nested) | roughly 1.1–1.4 million cups |
The per-cup price looks tiny and the freight does not. Ocean freight on a 40HQ to the US West Coast has swung between roughly USD 2,000 and USD 8,500 over the last two years, enough to move landed cost 15 percent while the factory price never changes.
Our MOQ is lower than most cup mills because small runs fit production gaps. For a first order we would rather ship 50,000 plain cups, a printed sample set and a lid fit report than talk you into a container you cannot sell through.
What we ask before quoting an 8oz cup
Four in five first calls leave out the detail that changes the price: what goes in the cup. Our questions:
- Hot or cold, and what temperature range
- Expected hold time in the customer’s hand
- Grammage and lining, or target cup weight if you do not know
- Lid source, and whether we need to match a drawing
- Destination country and whether coated cup stock is restricted there
Answer those and the quote is accurate on the first pass. Our compostable utensils ship alongside cups on mixed orders, cutting freight. Send the answers through the quote request form and we will reply with a spec sheet and FOB price within two working days.
FAQ
Is an 8oz single wall paper cup suitable for cold drinks?
No. With no insulating gap, condensation softens the paper within 15 minutes and the cup feels damp. Use double wall or a cold-specific cup with a heavier barrier.
How long does an 8oz single wall cup hold hot coffee?
With 250 gsm stock and a 15 gsm lining, expect 45 to 60 minutes of comfortable hold at 85°C. Thinner 210 to 230 gsm cups soften after 20 to 30 minutes, faster if squeezed.
What grammage should I order for an 8oz cup?
250 gsm is the practical default for cafés and convenience retail. Move to 260 to 280 gsm for tea, hot chocolate or premium branding, and only go below 240 gsm for short-serve espresso or samples.
Are PE-lined single wall cups recyclable?
Only in mills equipped to separate the plastic film, and many municipal programs exclude them. Water-based coated cups are easier to repulp.
Can you match an existing lid to your cup?
Yes, if you send the lid drawing or a physical sample. We confirm the rim outside diameter on our line (held to ±0.3mm) and run a 200-cup fit test first.
