Flexible Thermoplastic Polyurethane Material for Comfortable and Durable Footwear Applications

The footwear industry continues to demand materials that provide better comfort, durability, lightweight performance, and design flexibility. Soft Grade TPU Resin for Footwear has become an ideal solution for manufacturers looking for a balance between rubber-like flexibility and thermoplastic processing advantages.

Longyixing Soft TPU Resin is specially developed for footwear applications requiring excellent elasticity, soft touch, abrasion resistance, and low-temperature flexibility. With a hardness range of Shore A 55–80, this TPU material is suitable for flexible shoe components, footwear accessories, anti-slip parts, and customized footwear solutions.

Unlike traditional rubber materials, TPU can be processed through injection molding and extrusion, offering higher production efficiency and greater design freedom.

Soft Grade TPU resin pellets for footwear — Shore A 55-80 flexible thermoplastic polyurethane material
Figure 1. Soft Grade TPU resin pellets for footwear manufacturing. Shore A 55–80 hardness range provides rubber-like flexibility with thermoplastic processability for shoe straps, sandals, outsoles and accessories.

Why Use Soft TPU Resin in Footwear Manufacturing?

1 Excellent Flexibility and Soft Touch

Footwear components often require comfortable contact, bending resistance, and elastic recovery. Soft TPU provides a rubber-like feeling while maintaining the mechanical strength of thermoplastic materials.

The advantages include:

  • Soft and comfortable hand feel
  • Excellent flexibility
  • High elasticity
  • Good rebound performance
  • Long-term durability

These properties make Soft TPU suitable for products such as shoe straps, flexible accessories, and comfort-focused footwear components.

2 Outstanding Abrasion and Tear Resistance
TPU shoe sole abrasion resistance test — soft TPU footwear material durability
Figure 2. TPU shoe sole abrasion resistance. Soft TPU maintains stable performance under repeated bending and stretching, extending the service life of footwear components.

Footwear materials are exposed to continuous friction and mechanical stress during daily use. TPU offers excellent abrasion resistance and tear strength, helping extend the service life of footwear components.

Compared with many conventional soft materials, TPU maintains stable performance under repeated bending and stretching.

Typical applications include:

  • Anti-slip shoe components
  • Flexible outsole parts
  • Shoe reinforcement parts
  • Sports footwear accessories
3 Excellent Low Temperature Flexibility

Shoes used in outdoor environments require materials that remain flexible under cold conditions.

Soft TPU resin maintains elasticity at low temperatures, making it suitable for:

  • Outdoor footwear
  • Hiking shoes
  • Sports shoes
  • Winter footwear components
4 Plasticizer-Free Soft Material

Soft PVC often requires plasticizers to achieve flexibility, while TPU can provide soft performance without additional plasticizers.

Benefits include:

  • Better durability
  • Stable physical properties
  • Improved environmental performance
  • Better resistance to aging

Applications of Soft TPU Resin for Footwear

TPU soles for safety footwear — cushioning, flexibility and resistance applications
Figure 3. Soft TPU applied across footwear sole structures. From cushioning layers to flexible zones, soft TPU grades support diverse design requirements in safety, sports and casual footwear.

1. Shoe Straps and Sandal Components

Soft TPU is widely used for:

  • Sandal straps
  • Shoe bands
  • Decorative elements
  • Flexible connectors

The material provides comfortable touch, excellent elasticity, and good resistance to repeated deformation.

2. Footwear Accessories

Soft TPU pellets are suitable for producing:

  • Shoe logos
  • Decorative parts
  • Protective elements
  • Flexible inserts

Injection molding allows manufacturers to create complex designs with excellent surface appearance.

3. Soft and Flexible Shoe Sole Components

Although outsole materials usually require higher hardness TPU grades, soft TPU can be used in footwear structures requiring:

  • Cushioning performance
  • Flexible zones
  • Shock absorption components
  • Comfort layers

TPU materials are widely applied in footwear soles because of their combination of abrasion resistance, elasticity, and processing versatility.

4. TPU Modification for Footwear Materials

Soft TPU can also be combined with other polymers to develop customized footwear materials.

Examples:

  • TPU/ABS modification
  • TPU blends
  • Soft-touch compounds

This allows manufacturers to optimize:

  • Hardness
  • Surface feeling
  • Mechanical strength
  • Processing performance

Soft TPU Resin Grades for Footwear Applications

Longyixing provides different soft TPU grades according to footwear requirements.

Grade Hardness Processing Main Features
S55A Series Shore A 55-60 Injection Ultra-soft, flexible, comfortable touch
S65A Series Shore A 65-70 Injection Balanced softness and strength
S70A Series Shore A 70-75 Injection Good elasticity and durability
S80A Series Shore A 78-82 Injection / Extrusion Higher strength, better wear resistance

Processing Methods

Soft TPU Resin can be processed using:

TPU footwear sole injection molding — soft TPU processing for shoe components
Figure 4. Soft TPU resin processed by injection molding for footwear sole components. Both injection molding and extrusion are supported depending on the grade and application requirement.

Injection Molding

Suitable for:

  • Shoe accessories
  • Straps
  • Logos
  • Flexible components

Advantages:

  • Fast cycle time
  • High production efficiency
  • Excellent molding performance

Extrusion

Suitable for:

  • TPU strips
  • Flexible profiles
  • Continuous footwear components

Longyixing Soft TPU Resin Advantages

Longyixing provides customized TPU solutions for footwear manufacturers worldwide.

Our Soft TPU Resin features:

  • Shore A 55–80 hardness range
  • Excellent elasticity and flexibility
  • Good abrasion resistance
  • Low-temperature performance
  • Injection and extrusion grades
  • Custom colors available
  • Customized UV resistance options

With professional TPU formulation technology, Longyixing supports footwear manufacturers in developing comfortable, durable, and high-performance footwear products.

Need Soft Grade TPU Resin for your footwear production? Contact Longyixing Chemicals for customized TPU grade recommendations and technical support.