Name: Moisture-Resistant Synthetic Leather | WINIW
Brand: WINIW
SKU: 267038259

Description

Technical Parameters

Material Overview

WINIW manufactures specialized, moisture-resistant synthetic leather engineered specifically to prevent dynamic hydrolysis, surface peeling, and fungal decay in hot, humid, and marine environments. Standard polyurethane (PU) materials degrade rapidly when exposed to moisture molecules, which break the polymer chains and cause the coating to flake off.

By chemically formulating our coatings with highly stable polyether- or polycarbonate-grade resins and integrating permanent antimicrobial agents, our moisture-resistant roll goods withstand over 5 to 10 weeks of SATRA TM344 tropical chamber testing. Our materials provide reliable hydrostatic defense and mold protection for marine seating, outdoor furniture, safety shoes, and medical upholstery directly from our China factory.

Technical Specifications and Hydrolysis Testing Standards

Industrial buyers and material engineers require precise performance limits under thermal and moisture stress. WINIW's moisture-resistant synthetic leather is validated in our certified laboratory using accelerated aging chambers and hydrostatic pressure gauges against international standards:

Physical & Moisture-Resistance Metric	Verified Technical Typical Value	Conventional PU / PVC Leather	Reference Test Protocol	Sourcing Compliance Status
Tropical Chamber Hydrolysis (Jungle)	5 to 10 Weeks (No surface peeling)	1 to 2 Weeks (Ester base)	ISO 1419 Method C / SATRA TM344	Passed (Polycarbonate Grade)
Mildew & Fungal Resistance	Grade 0 Rating (Zero active growth)	Grade 2-3 (Fungal colonization)	ASTM G21 / ISO 846 Method A	Certified (Antimicrobial Matrix)
Hydrostatic Water Resistance	>= 1,500 mm H2O (Waterproof barrier)	< 300 mm H2O (Leaking)	AATCC 127 / ISO 811	Certified (Hydrostatic Defense)
Salt Spray Resistance	> 1,000 Hours (Zero surface corrosion)	< 200 Hours	ASTM B117 / ISO 9227	Passed (Yacht & Marine Grade)
Peeling Strength (After Hydrolysis)	>= 25 N / 3cm (Stable bond)	<= 5 N / 3cm (Delamination)	ISO 2411 (Tested after aging)	Passed (Coating-to-backing lock)
Bally Flexing (After Hydrolysis)	> 50,000 Flex Cycles (No cracking)	Fails instantly	EN ISO 5402-1 (Tested after aging)	Passed (High Crease Recovery)

Ask for Details

Types of WINIW moisture-proof synthetic leather

PVC synthetic leather

PU synthetic leather

Microfiber synthetic leather

Material Structure Selection: Polyether & Polycarbonate Chemistry

Standard cheap polyester-grade PU resins contain ester linkages that are highly vulnerable to water molecule cleavage. WINIW prevents early peeling failure by utilizing high-end polymer structures:

1. Polycarbonate Polyurethane (The Premium Marine Standard)

Our polycarbonate-grade PU is the ultimate defense against extreme humidity. The carbonate chemical bonds are exceptionally stable, providing superior resistance to light, heat, and moisture. This formulation easily passes 10-week jungle test chambers, making it the absolute standard for yacht seating, cruise ship loungers, and high-exposure outdoor marine upholstery.

2. Polyether Polyurethane (The Industrial Footwear Standard)

Our polyether-grade PU is naturally resistant to hydrolysis. It replaces vulnerable ester linkages with highly stable ether bonds that do not break down in water. This polymer maintains excellent flexibility and dynamic Bally flexing endurance under wet conditions, making it perfect for safety shoes, work boots, and athletic shoe linings.

3. Silicone Leather (100% Hydrolysis-Proof)

Because liquid silicone rubber (LSR) is an inorganic material, it does not contain any organic carbon linkages that can undergo hydrolysis. It is intrinsically immune to water degradation and passes dynamic aging tests indefinitely. It also boasts Grade 0 medical cytotoxicity, making it ideal for healthcare facilities and dental chairs.

Application-Specific Moisture-Resistant Solutions

We custom-tailor the backing fibers, thickness caliper, and surface coatings of our hydrophobic substrates to meet the target requirements of four major industries:

Marine & Yacht Seating: Engineered with UV stabilizers and saltwater-resistant topcoats to prevent salt-crusting, fading, and mold growth on open-cabin seating and boat interiors.
Outdoor & Hospitality Furniture: Durable Polycarbonate PU and heavy-duty PVC vinyl designed to withstand constant exposure to rain, high humidity, and sun without cracking or structural breakdown.
Safety & Industrial Footwear (EN ISO 20345): Highly breathable microfiber suede and PU linings that quickly wick sweat away from the foot, treated with permanent antibacterial agents to prevent sour wet odors.
Healthcare & Medical Seating: Waterproof, non-porous silicone and PU surfaces designed to resist chemical sanitizers, bleach, and bodily fluids while maintaining complete hydrostatic defense.

Our Closed-Loop Custom Engineering Process

To satisfy strict public tenders, brand R&D compliance filings, and OEM specifications, WINIW operates a closed-loop custom development line to tailor-make the exact physical properties you need:

Standard Analysis: You provide your target regulatory or industry codes (e.g., IATF 16949, EN ISO 20345, BS 5852 Crib 5).
Formulation Matching: Our laboratory adjusts polymer cross-linking density, UV stabilizers (HALS), plasticizer molecular weights, and backing fibers.
Pilot Lab-Dip Production: We manufacture physical swatches matching your custom Pantone color and gloss levels within 7 to 10 days.
On-Site Destructive Testing: Swatches undergo Wyzenbeek double rubs, tropical chamber hydrolysis, and vertical flammability tests to verify compliance.
Traceable Mass Production: Once approved, volume production is completed within 15 to 20 days with strict batch-code traceability.

Common applications of moisture-proof synthetic leather

WINIW moisture-proof synthetic leather is widely used in places with high requirements for moisture-proof performance, such as outdoor furniture, car interiors, ship interiors and household items in high humidity environments due to its excellent performance.

Furniture industry

Used for sofas, chairs, bedside and other furniture.

Automotive interior

Used in car seats, carpets, door panels, etc., providing excellent moisture resistance and durability.

Shipbuilding and aviation

Used in ship seats, aircraft interiors, etc. to meet the needs of high humidity and high-intensity use.

Fashion and accessories

Used in handbags, wallets, etc., combining beauty and practicality.

Footwear

Such as rain boots, snow boots, etc., are needed to protect the feet from moisture in wet or harsh weather conditions.

Sports equipment

Used for fitness equipment, ball surfaces, etc., providing excellent moisture and wear resistance.

Outdoor equipment

Such as backpacks, tents, outdoor shoes, etc., need to stay dry and comfortable in wet or rainy environments.

Water sports equipment

Such as life jackets, rowing seats, etc., need to be in contact with water for a long time, and moisture-resistant leather can ensure the stability and durability of the equipment.

Sourcing Policy: MOQ, Lead Time, and Packaging

Minimum Order Quantity (MOQ): Our standard custom manufacturing MOQ for moisture-resistant microfiber substrates is 300 linear meters per color and thickness. For standard PU or PVC formulations, the MOQ is 1,000 linear meters per color and thickness. For standard program stocks in black or white, we can dispatch trials starting from 100 linear meters to support your prototyping.
Color Matching Consistency: Lot-to-lot color shading (ΔE) is a critical quality concern for automated assembly lines. Our laboratory utilizes automated gravimetric pigment dispensers and Datacolor spectrophotometers to maintain the overall color difference strictly under Delta E <= 0.82 under standard D65 illuminants.
Packaging and Transport: All bulk rolls are packed in dual-layer PE moisture-barrier roll wrapping with heavy-duty woven outer PP bags and labeled with unique traceable batch-code roll IDs.

Buyer Sourcing FAQs

Q: What is the difference between moisture-resistant and fully waterproof synthetic leather?

A: Fully waterproof leather (AATCC 127) uses a continuous, non-porous polymer topcoat that blocks liquid water from passing through under pressure. However, in hot, humid environments, moisture vapor can still penetrate the material and cause internal hydrolysis of the polymer layer. Moisture resistance ensures that even when water vapor penetrates the material, the chemical bonds of the PU resin remain stable and do not hydrolyze or peel. WINIW recommends moisture-resistant polyether/polycarbonate resins for all high-humidity applications.

Q: Why does natural leather rot in humid climates while synthetic microfiber resists decay?

A: Natural leather is an organic protein-based hide that retains moisture within its collagen fiber network, providing a breeding ground for bacteria, mold, and mildew when stored wet. This causes rapid rotting and sour odors. WINIW synthetic microfiber is formulated with inorganic synthetic nylon and polyester fibers infused with permanent silver-ion antimicrobial additives. Passing ASTM G21 Grade 0 mildew testing, our material intrinsically prevents bacterial colonization and remains structurally intact even when stored damp.

Contact Our Engineering Materials Team

Plant Footprint: 100,000 m² total manufacturing area
Annual Output: 2,000,000 meters of high-grade synthetic roll goods
On-Site Lab: Certified thickness gauges, tensile testers, and Bally flex chambers
Direct Inquiry Email: MKT@MicrofiberLeather.com
B2B WhatsApp: +8618150976625
Corporate Address: 3rd Floor, Huixia Building B, Meiling Street, Jinjiang, Quanzhou, Fujian 362200 China