What are the main types of Synthetic Leather Base Fabrics?

Why Are Base Fabrics So Important?

Imagine that even the most high-end concrete cannot build a skyscraper without sturdy steel bars. For synthetic leather, the base fabric is the crucial “steel bar”. It not only serves as the foundation for bearing coatings but also directly determines the final performance of synthetic leather:

• Mechanical properties: Key performance metrics such as tensile resistance, tear resistance and bursting strength are mainly supported by the base fabric.
• Hand feel and appearance: The softness, thickness and structure of the base fabric directly affect whether the synthetic leather is stiff or soft, drapable or elastic.
• Process adaptability: Different production processes (such as direct coating, transfer coating, calendaring and laminating) have distinct requirements for base fabrics.

Based on their structural characteristics, base fabrics can be roughly divided into three main categories: woven fabrics, knitted fabrics and non-woven fabrics. Each type has its own strengths and excels in different application fields.

A Detailed Analysis of the Three Major Base Fabric Categories

1. Woven Fabric for Leather Base Cloth

Woven fabrics are the most traditional textile materials, formed by the interweaving of mutually perpendicular warp and weft yarns, much like a neat grid. Common raw materials include pure cotton, polyester, and polyester-cotton blends.

• Characteristics: Its greatest advantage is excellent dimensional stability, a compact structure and high resistance to deformation. Therefore, synthetic leather with woven fabric as the leather base cloth features high strength, wear resistance and exceptional durability.
• Disadvantages: Due to its dense structure, it has relatively poor softness and drapability, and may have a slightly stiff hand feel.
• Typical Applications: This “sturdy” characteristic makes it ideal for products that need to withstand high stress and wear, such as heavy-duty luggage and bags, wear-resistant packaging materials, industrial accessories, conveyor belts, as well as some furniture and car seat cushions that require a stiff appearance.

2. Knitted Fabric for Leather Base Cloth

Knitted fabrics are formed by the interlooping of stitches, the same structure found in common sweaters and T-shirts. Warp-knitted fabrics are usually adopted as the leather base cloth for synthetic leather.

• Characteristics: The core advantages of knitted fabrics are excellent extensibility and softness. It can fit various curved surfaces well, with a full hand feel and strong drapability.
• Disadvantages: Good extensibility is a double-edged sword, meaning its dimensional stability is inferior to that of woven fabrics, and it is prone to deformation under stress.
• Typical Applications: Such soft and skin-friendly characteristics make it an ideal choice for garments, gloves, soft furnishings and fashion accessories. Foamed synthetic leather, in particular, often uses knitted fabric as the leather base cloth to achieve light weight, softness and a full hand feel.

3. Non-Woven Fabric for Leather Base Cloth

Non-woven fabrics, also known as nonwovens, skip traditional textile weaving steps and are formed by directly entangling or bonding fibers together through mechanical, chemical or thermal processes. This is the most technologically advanced and fastest-growing category in the field of synthetic leather base fabrics.

• Structure: Different from woven and knitted fabrics, the fibers in non-woven fabrics are distributed in a three-dimensional network structure. This structure is remarkably similar to the interwoven structure of collagen fibers in natural leather.
• Characteristics: Unrestricted by warp and weft yarns, non-woven fabrics have more uniform performance in all directions. Moreover, by selecting different fibers and processes, they can achieve an extremely high level of natural leather simulation, with a soft, full and elastic hand feel.
• Advanced Technology – Superfine Fiber Non-Woven Fabric for Leather Base Cloth: To achieve a higher level of natural leather simulation, scientists have developed superfine fibers. These fibers are only a few tenths or even a hundredth the fineness of ordinary fibers, enabling the formation of a large specific surface area and a dense structure. There are two main types:
  • Island-in-sea superfine fibers: One component (the “islands”) is dispersed in another component (the “sea”). The “sea” component is dissolved during post-finishing, leaving behind ultra-fine “island” fiber bundles.
  • Splittable superfine fibers: Two incompatible polymers are arranged in a radial or orange petal shape and split into finer fibers through physical methods such as water jetting.
• Typical Applications: High-end synthetic leather made of superfine fiber non-woven fabric for leather base cloth (often referred to as “microfiber leather”) has performance that is extremely close to, and even surpasses, natural leather in some aspects. It is widely used in high-end fields with strict quality requirements, such as high-grade garments, shoe materials, sports balls, automotive interiors and luxury furniture.

A Comparative Table for Quick Understanding

For a more intuitive comprehension, we compare the three types of base fabrics in the table below:

Base Fabric Type	Core Structure	Core Advantages	Core Disadvantages	Typical Applications
Woven Fabric	Warp and weft yarn interweaving	High strength, excellent dimensional stability, durable	Stiff hand feel, poor drapability	Luggage and bags, industrial accessories, conveyor belts, wear-resistant packaging
Knitted Fabric	Stitch interlooping	Soft, good extensibility, strong drapability	Prone to deformation, poor dimensional stability	Garments, gloves, soft furnishings, fashion accessories
Non-Woven Fabric	Three-dimensional fiber interweaving	Uniform performance, excellent natural leather simulation, soft and full hand feel	Insufficient strength for some products, complex production technology	Microfiber leather, high-grade garments/shoe materials, automotive/furniture interiors

A Simple Guide for Base Fabric Selection

Now that we have understood the characteristics of each type, how to make the right selection? In fact, the answer lies in your specific needs.

• If you pursue ultimate durability and shape retention – for example, a laptop bag for daily commuting or industrial accessories for high-intensity use – synthetic leather with a woven fabric as the leather base cloth will be a reliable choice.
• If you prioritize soft hand feel and wearing comfort – such as a fashionable faux leather jacket or a pair of gloves – synthetic leather with a knitted fabric as the leather base cloth will deliver a better experience.
• If you seek a premium texture comparable to natural leather, desiring both soft touch and good durability – like a high-end sofa or a pair of top-tier sports shoes – synthetic leather made of superfine fiber non-woven fabric as the leather base cloth (microfiber leather) is the optimal answer.

Conclusion

The world of synthetic leather is far more than just surface coatings. The stability of woven fabrics for leather base cloth, the softness of knitted fabrics for leather base cloth, and the natural leather simulation of non-woven fabrics for leather base cloth – each type of base fabric interprets the infinite possibilities of synthetic leather in its own unique way.

Zhejiang Wanlihong Textile Technology Co., Ltd. specializes in the R&D, production and sales of synthetic leather base fabrics. Here, you can find a full range of knitted leather base cloth. With an integrated production chain, we not only control costs but also ensure the stable performance of our products to the greatest extent.