PP與TPR材質

PP (polypropylene) is a rigid, mechanically rugged thermoplastic known for its chemical resistance, while TPR (thermoplastic rubber) is a flexible elastomer that combines the properties of rubber and plastic. PP is often used in durable goods like packaging and car parts, whereas TPR is chosen for applications that require more flexibility and impact resistance, such as tool grips, shoe soles, and seals.

Polypropylene (PP)

• Composition: A single-polymer plastic.
• Rugged and durable.
  High chemical resistance.
  Can be scratched by sharp objects.
  Is not transparent in its higher-density forms.
• Applications: Packaging, automotive components, textiles, and lab equipment.

Thermoplastic Rubber (TPR)

• Composition: A blend of plastic and rubber, often a mix of polypropylene (PP) and another elastomer, or other combinations like EVA and vinylidene chloride.
• Combines the flexibility and elasticity of rubber with the processability of plastic.
  Good impact resistance and tear resistance.
  Wide temperature range resistance (-40°C to 120°C).
  Can be manufactured in a wide range of hardness levels (20A to 85D Shore).
• Applications: Tool handles, shoe soles, seals, grips, and various consumer and industrial parts.