Wet Wipe Substrate Options: Viscose, Polyester, or Wood Pulp — Which One for Which Use?

2026-07-28

The substrate (nonwoven fabric) of a wet wipe is the core element determining product performance. Mainstream wet wipe substrates fall into three major categories: viscose fiber, polyester fiber (PET) , and wood pulp fiber. Each possesses distinct physicochemical properties and application scenarios—understanding these differences is the foundation for precisely matching substrate to product use.

1. Viscose Fiber Substrate: Soft, Skin-Friendly, High Absorbency

Viscose fiber is derived from natural wood pulp through a chemical regeneration process, retaining the inherent hydrophilic nature of cellulose.

Characteristic	Viscose Fiber Specification
Liquid Uptake Rate	Fast
Liquid Retention (× self-weight)	Approx. 8–12×
Softness	High; cottony feel
Wet Strength	Moderate (approx. 40%–50% of dry strength)
Biodegradability	Biodegradable (good)
Cost	Medium

Recommended Applications: Due to its excellent skin-friendliness and absorbency, viscose is the preferred substrate for Baby Wipes, facial cleansing wipes, and sensitive-skin wipes. Its natural origin and biodegradability also align with the maternal and infant market's preference for environmentally friendly materials.

Note: Viscose's moderate wet strength makes it unsuitable for heavy-duty wiping scenarios (such as industrial grease cleaning), as it may tear or pill.

2. Polyester Fiber Substrate: High Strength, Wipe-Resistant

Polyester is a synthetic fiber produced from petroleum-based raw materials via melt-spinning. Its core advantage lies in mechanical strength.

Characteristic	Polyester Fiber Specification
Liquid Uptake Rate	Medium-slow (requires hydrophilic treatment)
Liquid Retention (× self-weight)	Approx. 4–6×
Softness	Moderate (stiffer than viscose)
Wet Strength	High (approx. 80%–90% of dry strength)
Biodegradability	Non-biodegradable (environmental concern)
Cost	Low

Recommended Applications: Polyester's high strength makes it suitable for household cleaning wipes, industrial wiping wipes, and floor wipes that require repeated wiping or applied pressure. Its lower cost also supports widespread use in mass-market general-purpose wipes.

Note: Polyester is inherently hydrophobic and requires hydrophilic finishing to function in Wet Wipes. Moreover, its non-biodegradability has drawn regulatory attention—the EU has already included plastic-containing wipes in its Single-Use Plastics Directive.

⭐3. Wood Pulp Fiber Substrate: Natural Short Fibers, High Absorbency and Flushable

Wood pulp fiber is a natural plant fiber (typically from softwood), formed into nonwoven via dry-laid or wet-laid processes. The fibers are short with rough surfaces, offering excellent liquid capture capability.

Characteristic	Wood Pulp Fiber Specification
Liquid Uptake Rate	Very fast
Liquid Retention (× self-weight)	Approx. 10–15×
Softness	Lower (coarser texture)
Wet Strength	Low (requires wet-strength agents or blending)
Biodegradability	Biodegradable (excellent) and flushable
Cost	Medium-low

Recommended Applications: Wood pulp's very fast uptake and natural flushability make it ideal for flushable wipes and kitchen cleaning wipes. The former is used for personal hygiene in restroom settings; the latter for countertops, stovetops, and grease removal.

Note: Wood pulp's naturally low wet strength requires blending with a small amount of viscose or adding eco-friendly wet-strength agents to meet usage requirements. Its coarser texture also makes it unsuitable for sensitive areas such as around the eyes or on baby skin.

4. Comprehensive Comparison of the Three Substrate Types

Comparison Dimension	Viscose	Polyester (PET)	Wood Pulp
Raw Material Source	Natural wood pulp (regenerated)	Petroleum-based (synthetic)	Natural wood pulp (virgin)
Liquid Uptake Rate	Fast	Medium (needs treatment)	Very fast
Liquid Retention	High	Medium	High
Wet Strength	Medium	High	Low
Softness	Excellent	Moderate	Coarse
Biodegradable	Yes	No	Yes
Flushable	Limited	No	Yes (with formulation)
Unit Cost	Medium	Low	Medium-Low

5. Procurement Matching Recommendations

Target Use	Recommended Substrate	Key Rationale
Baby hand-and-mouth wipes	Viscose (≥80% content)	Skin-safe, fast uptake, soft
Facial cleansing/makeup removal wipes	Viscose or viscose/wood blend	Soft, non-abrasive, high retention
Household multi-purpose cleaning wipes	Polyester or polyester/viscose blend	High strength, cost-effective
Kitchen heavy-grease cleaning wipes	Wood/viscose blend (wood-dominant)	Very fast uptake, good degreasing
Toilet flushable wipes	Wood/viscose blend (wood ≥70%)	Flushable, biodegradable, compliant
Industrial/automotive wiping wipes	Polyester (≥80% content)	High strength, solvent-resistant, low linting

When evaluating wet wipe substrates, purchasers should prioritize reviewing the fiber composition and percentage stated in the technical specification sheet, and make comprehensive selection decisions based on target market usage scenarios, environmental regulations, and cost considerations.

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