B2B procurement · Buyer guide
A paper napkin supplier should test the finished fold with a defined oil dose and contact time, then record stain visibility on the public-facing side and any transfer to the table surface separately. Compare the candidate with an approved reference under the same lighting and backing. A water-absorption result does not predict grease show-through, and a clean appearance does not establish food-contact compliance.
This is a buyer-defined appearance and transfer screen for a specified napkin use. No Sansheng grease-test result or food-contact approval is claimed.
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Reusable procurement data
Direct answer
A paper napkin supplier should test the finished fold with a defined oil dose and contact time, then record stain visibility on the public-facing side and any transfer to the table surface separately. Compare the candidate with an approved reference under the same lighting and backing. A water-absorption result does not predict grease show-through, and a clean appearance does not establish food-contact compliance.
Define the visible side and use setting
Record napkin size, ply, embossing, print coverage and fold. Mark the side visible to a diner and the side touching food or hands. The paper napkin supplier should agree the table color and lighting before testing, because a stain may be more visible on a white print area or against a dark backing.
Apply a repeatable grease challenge
Select production-intent napkins from identified packs and use one defined oil or greasy food simulant, dose, temperature, weight and contact time. Keep a dry control and an approved competitor or signed reference if available. Apply liquid at the same location relative to print and fold. Do not change the challenge after seeing a result.
Report appearance and transfer separately
Photograph the visible face at fixed intervals, then inspect the back and a clean table witness. Record stain area, color change and any transferred oil using an agreed visual grade or measurement. Include replicate napkins across packs. A napkin may hide a stain yet still transfer oil, or show a stain without transfer; these are different buyer decisions.
Set the purchase limit
Agree an appearance reference for the actual hospitality setting and a separate surface-transfer limit. Recheck after changing furnish, ply, embossing, print, coating or fold. If food-contact status is requested, review applicable material evidence for the destination market separately; this simple observation cannot establish regulatory compliance.
Buyer comparison record
| Check | Record | Buyer purpose |
|---|---|---|
| Napkin | Ply, print and fold | Match intended format |
| Challenge | Oil, dose and time | Repeat the contact |
| Visible side | Stain area and contrast | Judge table appearance |
| Witness | Oil reaching the surface | Judge transfer |
What should buyers ask the paper napkin supplier?
- Finished napkin packs and signed appearance sample
- Oil dose, contact and backing protocol
- Replicate visible-face and witness photographs
- Separate appearance and transfer limits
Send the paper napkin supplier your intended use, destination and required acceptance decision.
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Questions buyers also ask
Is grease show-through the same as oil absorption?
No. Absorption, visible staining and transfer to the table are different outcomes.
Can a water test qualify grease appearance?
No. Water and oil wet the sheet differently.
Does a clean photo prove food-contact compliance?
No. Regulatory evidence must address the actual material and market.
Sources and scope notes
- ISO 12625-8:2010 Supports: Defines water-absorption time and capacity for tissue. Limit: Does not measure grease show-through.
- Sansheng paper napkin product page Supports: Identifies finished napkin product context. Limit: Does not provide a grease-test result.
Source scope checked October 23, 2026. Illustrative images do not document a Sansheng test, certified SKU or customer order.
Request an identified sample review
Send the paper napkin supplier your exact SKU, approved sample, buying destination and evidence requirement. The record can then be matched to the decision before a quote or release.
Sales Manager at Sansheng Paper · 20+ years in tissue paper OEM & bulk export · LinkedIn
