Food-Grade Paperboard (Cupstock): This is the base material, chosen for its strength, rigidity, and food safety. Common paper weights (GSM - grams per square meter) range from 150 GSM to 350 GSM, depending on the size and intended use of the final cup.
Barrier Coating: To make the cup leak-proof and suitable for liquids, the paperboard is laminated with a thin barrier layer. The most common coatings are:
- Polyethylene (PE): A plastic coating that provides excellent water and grease resistance and enables heat sealing. It can be applied to one side (for hot cups, inside) or both sides (for cold cups, to also resist condensation).
- Polylactic Acid (PLA): A bio-based and compostable alternative made from renewable resources (like corn starch). It's used for eco-friendly cups and is compostable under industrial conditions.
- Aqueous/Water-based coatings: Newer, plastic-free coatings that aim to make the paper more easily recyclable in standard paper recycling streams.
Printing (Optional): If the finished paper cups require branding, logos, or designs, the coated paperboard is often flexo-printed or offset-printed with custom graphics before being cut into the fan shape. Many suppliers offer multi-color printing options.

Coating	Single/Double PE coated
Material	Original pulp wood Paper 150 gsm to 350 gsm
Printing Type	Flexographic /Offset Printing
Brands	APP, Enso, SUN, Yinbin, Five Star, Jianghe, Bohui

FAQ:

Do you have Certifications for the PE paper that is suitable for food contact?
A: Paper obtained SGS, it's healthy for food contact. According to customer's requirement, we can offer Health Certificate (HC);
Test report from MA(MA); SGS certificate(SGS);China National Accreditation Service for Conformity Assessment
(CNAS); Embassy certification.
paper Size, Specification
Q: Can you cut roll to the different sizes of sheets as we want? Or there has some standard size for sheets?
A: We can cut size based on your requirement. There is no standard size.
Q: Can you tell me the exact dimension of the paper (width * length)?
A: Different cup moulds, paper size is different. Please inquiry to get your exact size.
Paper Gram Choosing for cups
Q: What is the optimum paper gram for hot drinks and for cold drinks?
A:Usualy, hot drink using single PE coated paper or PBS coated paper; Cold drink use double PE coated cup paper or double PBS
coated cup paper , Different cup size and different market using different gram. Please inquiry to get our suggestion!
Cup fan pcs/ton
Q: How many pieces of paper cups can we make from each ton paper?
A: Please send us your cup drawing-layout (means the opened dimension) Or tell us your cup size (Top diameter /Bottom diameter
/Wall Height). We will estimate to you.
Bottom pcs/ton
Q: How many cup bottom are needed for the 1ton precut & printed paper (cup body)?
A: Usually the proportion is about 1:0.2 (means 1ton paper need about 0.2tons bottom paper, just for reference!). Certainly,
different cup size, different gram, it's different. Please inquiry details!
Paper Printing.
Q: Can you produce the printed & cut cup paper?
A: Yes, we can do flexographic (max 6colors printing)or offset printing, and Auto-cutting to be the shapes you need, such as paper
cup blanks.
Q: What's the difference of flexographic printing & offset printing? What is the best printing method? How many colors can you print on a paper cup?

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