What Is PU Leather? Complete Guide to Polyurethane Synthetic Leather”
# What Is PU Leather? Complete Guide to Polyurethane Synthetic Leather
PU leather is everywhere — your sofa, your car seat, your favorite jacket, your phone case. But most people have no idea what it actually is, how it’s made, or why it’s become the world’s most widely used synthetic leather.
This guide covers everything you need to know about PU leather, from its chemical composition to its real-world performance.
What Does PU Leather Stand For?
PU leather stands for polyurethane leather. It’s a synthetic material made by coating a fabric base with a layer of polyurethane — a versatile polymer that can be engineered to mimic the look, feel, and texture of genuine animal leather.
The term “PU leather” is used interchangeably with:
- Faux leather
- Synthetic leather
- Vegan leather (when no animal products are used)
- Artificial leather
- Leatherette
All of these terms generally refer to the same category of material, though the quality and construction can vary significantly between products.
How PU Leather Is Manufactured
Understanding how PU leather is made helps explain why it performs the way it does.
The Base Layer: Fabric Backing
Every PU leather starts with a fabric backing. This backing provides structural strength and determines many of the material’s physical properties.
Common backing types:
- Woven fabric — Strong, stable, used for bags and upholstery
- Non-woven fabric — Softer, more economical, used for garments
- Knitted fabric — Flexible and stretchy, ideal for clothing and shoes
- Microfiber nonwoven — Premium option, closest to genuine leather structure
The PU Coating Process
There are two main methods for applying polyurethane to the backing:
Dry Process (Transfer Coating) 1. PU resin is applied to a release paper in multiple layers 2. The fabric backing is laminated onto the PU film 3. The release paper is peeled away, leaving a smooth PU surface 4. Surface is embossed with texture patterns
This method produces a cleaner, more consistent surface and is used for higher-quality PU leather.
Wet Process (Direct Coating) 1. PU solution is directly coated onto the fabric backing 2. The coated fabric passes through a water bath (coagulation) 3. The PU solidifies into a porous structure 4. Surface is finished and embossed
The wet process creates a more breathable structure and is commonly used for shoe uppers and garments.
Surface Finishing
After the base coating, PU leather goes through several finishing steps:
- Embossing — Rollers press texture patterns (grain, croco, smooth) into the surface
- Color coating — Pigments are applied for color consistency
- Top coat — A protective layer adds gloss, matte, or satin finish
- Quality inspection — Each roll is checked for defects
Properties and Characteristics of PU Leather
PU leather’s properties depend heavily on the formulation and manufacturing process, but here are the general characteristics:
Physical Properties
| Property | Typical Range |
|---|---|
| Thickness | 0.5mm – 2.0mm |
| Width | 54″ (137cm) standard |
| Weight | 200 – 600 g/m² |
| Tensile Strength | 15 – 40 N/mm² |
| Elongation at Break | 200 – 400% |
| Peel Strength | 30 – 80 N/cm |
Performance Characteristics
Durability: Quality PU leather lasts 5-10 years with normal use. The coating can crack or peel if exposed to extreme conditions or if the quality is poor.
Water Resistance: PU leather is naturally water-resistant. The polyurethane coating repels liquid water, making it easy to wipe clean.
UV Resistance: Standard PU leather fades with prolonged UV exposure. UV-stabilized formulations are available for automotive and outdoor applications.
Temperature Range: PU leather performs well between -10°C and 60°C. Extreme cold can cause stiffness; extreme heat can cause deformation.
Breathability: Standard PU leather has low breathability. Porous PU formulations and perforated designs improve airflow.
PU Leather Applications by Industry
PU leather’s versatility makes it suitable for dozens of industries:
Fashion & Accessories
- Handbags and purses
- Wallets and cardholders
- Belts and straps
- Gloves
- Hats and caps
Footwear
- Casual shoes and sneakers
- Dress shoes and boots
- Athletic footwear
- Children’s shoes
Furniture & Home
- Sofa and chair upholstery
- Headboards and bed frames
- Dining chair seats
- Home office furniture
Automotive
- Seat covers and upholstery
- Steering wheel covers
- Door panel inserts
- Dashboard trim
Garments
- Jackets and coats
- Skirts and pants
- Vests and waistcoats
- Sportswear panels
Other Applications
- Phone cases and tablet covers
- Stationery and notebooks
- Sports equipment
- Medical equipment covers
PU Leather vs PVC Leather: Quick Comparison
Both are synthetic leathers, but they have important differences:
| Feature | PU Leather | PVC Leather |
|---|---|---|
| Softness | Softer, more flexible | Stiffer, more rigid |
| Breathability | Slightly better | Near zero |
| Durability | 5-10 years | 8-15 years |
| Eco-friendliness | Better (no chlorine) | Contains chlorine |
| Cost | Mid-range | Lower cost |
| Best for | Fashion, garments, bags | Outdoor, automotive, heavy use |
When to choose PU: Garments, fashion bags, furniture where softness matters When to choose PVC: Outdoor furniture, automotive, applications needing maximum durability
PU Leather vs Genuine Leather: How Close Is It?
Modern PU leather has come a long way. Here’s an honest comparison:
Where PU leather matches genuine leather:
- Visual appearance (especially embossed grain patterns)
- Ease of cleaning
- Color consistency
- Cost-effectiveness
Where genuine leather still wins:
- Natural breathability
- Aging character (genuine leather develops patina)
- Perceived luxury and prestige
- Biodegradability
Where PU leather wins:
- Price (30-60% cheaper)
- Consistency across batches
- Water resistance
- Vegan/cruelty-free credentials
- Wider color range
Quality Grades of PU Leather
Not all PU leather is equal. Here’s how to understand quality tiers:
Entry Level
- Thin coating (0.5-0.7mm total)
- Non-woven backing
- Basic embossing
- Lifespan: 2-4 years
- Price: $1-3/meter
Mid Range
- Standard coating (0.8-1.2mm)
- Woven or non-woven backing
- Good color fastness
- Lifespan: 4-7 years
- Price: $3-6/meter
Premium
- Thick coating (1.2-2.0mm)
- Woven backing
- High peel strength
- Excellent color fastness
- Lifespan: 7-12 years
- Price: $6-15/meter
Ultra Premium (Microfiber PU)
- Microfiber nonwoven base
- Multiple PU coating layers
- Closest to genuine leather
- Lifespan: 10-15+ years
- Price: $10-25/meter
How to Identify Quality PU Leather
When sourcing PU leather, here’s what to check:
1. The Bend Test Fold the material sharply. Quality PU leather springs back without creasing. Low-quality material shows permanent fold marks.
2. The Scratch Test Lightly scratch the surface with a fingernail. Quality PU leather shows no marks. Poor quality shows scratches immediately.
3. The Peel Test Try to separate the coating from the backing. Quality PU leather has strong adhesion (peel strength >40 N/cm). Weak adhesion means early peeling.
4. The Smell Test Quality PU leather has a mild, neutral smell. Strong chemical odors indicate poor-quality solvents or excessive plasticizers.
5. Request Test Reports Ask your supplier for:
- Peel strength test (ASTM D751 or equivalent)
- Color fastness test (Grade 4+ minimum)
- Flex resistance test (50,000+ cycles minimum)
- RoHS/REACH compliance certificate
Sourcing PU Leather from China
China produces approximately 65% of the world’s synthetic leather. Here’s what to know when sourcing:
Main production regions:
- Zhejiang Province (Haining, Wenzhou) — largest concentration
- Guangdong Province — fashion-focused production
- Fujian Province — footwear-focused production
How to find reliable suppliers:
- Alibaba and Made-in-China for initial discovery
- Canton Fair (April and October) for in-person meetings
- Request factory audit reports
- Start with sample orders before bulk
Key questions to ask:
- What is your minimum order quantity?
- Can you provide test reports for your materials?
- What is your lead time for custom colors?
- Do you have RoHS/REACH compliance documentation?
At cnmaterials.com, we supply PU leather directly from our factory in China, with full compliance documentation and free samples available.
FAQ: PU Synthetic Leather
Is PU leather real leather?
No. PU leather is a synthetic material made from polyurethane. It contains no animal hide. However, high-quality PU leather can closely mimic the appearance and feel of genuine leather.
Is PU leather waterproof?
Yes. The polyurethane coating makes PU leather water-resistant. It repels liquid water and is easy to wipe clean. However, it is not fully submersible — prolonged water exposure can eventually penetrate seams and edges.
Does PU leather crack?
Low-quality PU leather can crack, especially with UV exposure, extreme temperatures, or poor maintenance. Quality PU leather with proper care should not crack for 5-10 years.
Is PU leather safe?
Quality PU leather is safe. Unlike PVC leather, PU does not contain chlorine or phthalates. Look for RoHS and REACH compliance certificates to ensure safety.
How do I clean PU leather?
Wipe with a damp cloth and mild soap. Avoid harsh chemicals, alcohol, and abrasive cleaners. Dry immediately after cleaning.
Can PU leather be repaired?
Yes. Small scratches and scuffs can be repaired with leather repair kits. Peeling requires more extensive repair or replacement.
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*Last updated: April 2026 | cnmaterials.com*