Water-Based Coated Cupstock Board

Water-based coated cupstock board is a food-grade paperboard whose surface carries a water-based (aqueous) barrier coating instead of a plastic PE film. It is the substrate behind hot and cold drink paper cups: cup converters die-cut, crease and heat-seal the coated board into cup bodies and bottoms, relying on the coating to keep the drink from soaking through the paper.

As a paper converter, Bofeng supplies this cupstock in rolls, slit to the widths your cup-forming line runs, and printed to your artwork. Tell us the cup size, the filling temperature and your print layout, and we will match grammage and coating performance to your line.

What is water-based coated cupstock board

Cupstock is a heavier food-grade paperboard built to be formed and heat-sealed into cups. In this grade the board is coated on-machine with a water-based dispersion instead of being laminated with PE. The coating dries to a continuous barrier with no separate plastic layer, so the board stays printable, creases cleanly at fold lines and heat-seals reliably on high-speed cup-forming equipment.

Key material properties

• Leak and moisture barrier. The aqueous coating stops liquid from soaking through the board, so a filled cup does not weep, soften or wet its outside surface.
• Hot- and cold-drink performance. The coating holds hot drinks such as coffee and tea at serving temperature, and it helps keep the condensation of a cold drink off the cup's outer surface — the cup and its sleeve stay dry.
• Grease resistance. The coated surface resists oil and grease, suiting creamy, milky or oily drinks.
• Converting and heat-sealing. The coating lies flat and uniform, does not crack when the board is creased and rolled, and heat-seals consistently for secure cup-bottom sealing on fast lines.
• Print surface. The smooth coated surface carries sharp, high-resolution colour printing for cup branding.
• Food-contact safety. Food-grade cupstock meets food-contact safety requirements for paper and board that touches food; documentation for compliance review is available offline on request.

Supply forms and custom converting

• Rolls, slit to the cup-machine widths you run — plain or printed.
• Custom grammage, slit width and print (brand artwork) on request.

We also convert this board on our own lines — slit to the cup-machine width you run, printed, creased and die-cut to your blank. Typical finished format: cake cups and liners.

Slitting, rewinding, sheeting and printing are carried out on our own converting lines. Send the line the paper runs on and the form you need; grade, grammage and tolerance are confirmed before quoting. Custom paper converting

Typical end uses

Because it forms, seals and holds liquid without leaking, water-based coated cupstock board is commonly converted into:

• Hot drink paper cups for coffee, tea and similar beverages
• Cold drink paper cups for juice, soft drinks and iced drinks
• Ice-cream and frozen-dessert cups
• Single-use cup packaging for food service

How to order and choose

Board for a cup is chosen by grammage — heavier for larger or hot-filled cups — and by coating performance for what will be served. For cup producers and food-service packagers we supply coated cupstock in the common basis-weight range, slit and printed to order. Request samples to trial on your own cup machine — tell us the cup size and the fill temperature, and we will recommend a starting grammage and coating.

Bofeng New Materials supplies water-based coated cupstock board to cup makers, food-service packagers and brand owners worldwide.

Fluorine-free construction. The coating is a water-based system and contains no fluorochemical greaseproof agent. For EU food-contact packaging — where PFAS restrictions apply from 12 August 2026 — tell us the destination market and we will confirm the grade and the documents you need. Compliance documentation is provided offline on request; we do not publish certificate numbers online.

Request samples or a quote: jason.zhan@bofmat.com

Related: Water-Based Coated Cupstock Board · Water-based Coating Paper · Rolled-edge baking cup base paper · Cake Cup Base Paper