Puncture-Resistant Midsole Fabric & Puncture-Resistant Antistatic Insoles

Puncture-Resistant Midsole Fabric & Puncture-Resistant Antistatic Insoles

1. Product Overview

Puncture-resistant midsoles are indispensable core protective components in safety shoes, military boots, and outdoor shoes. They can effectively resist the risk of puncture from sharp objects on the ground (such as nails, iron filings, and glass shards), providing users with all-day foot protection. JUSTEIN specializes in the R&D of non-metallic puncture-resistant midsole fabrics. While ensuring high protective performance, they also balance lightweight properties and comfort, meeting the diverse needs of modern functional footwear. Such products can undergo antistatic treatment to comply with relevant ESD (Electrostatic Discharge) standards.

2. Materials & Structure

• High-Strength Fiber Fabric: Made of aramid, high-tenacity polyester, or special yarns, featuring high strength and high toughness.
• Multi-Layer Interlacing Technology: Through multi-layer interlacing or needle-punching processes, fibers form a tight protective network in multiple directions, effectively dispersing puncture force.
• Lightweight & Flexible: Compared with traditional metal steel sheets, non-metallic midsole fabrics are more flexible, suitable for shoe styles requiring bending flexibility, and do not restrict walking.
• Metal-Free Design: Will not trigger alarms when passing through security gates, making them suitable for work environments such as aviation and security inspection industries.

3. Protective Principle

The protective mechanism of puncture-resistant midsoles mainly relies on the tensile strength of high-strength fibers and the force dispersion effect of the interlaced structure:

• When a sharp object pierces, the force is dispersed to more fibers, reducing local stress.
• High-strength fibers themselves have extremely high breaking strength, which can resist penetration.
• The multi-layer structure forms a barrier layer, increasing the complexity of the overall puncture path, thereby significantly improving protective performance.

4. International Standards & Certifications

Our puncture-resistant midsole products comply with multiple international footwear safety standards, suitable for markets in Europe, North America, and Asia:

• EN ISO 20344 / 20345 (European Standards)
• Specify the test method for footwear puncture resistance. During the test, a force of 1100N (approximately 112kgf) is applied to the shoe sole, and the test nail must not pierce the midsole.
• Divided into two types of test requirements: non-metallic and steel.
• ASTM F2413 (American Standard)
• Has clear requirements for the puncture resistance of safety shoes. The test method is similar to European standards, with a focus on simulating actual working environments.
• CSA Z195 (Canadian Standard)
• Similar to ASTM, but imposes higher requirements on the performance of footwear in cold environments.
• China GB 21148 / GB 21146
• Stipulate requirements for the puncture protection and comfort of safety shoes, with test methods aligned with ISO standards.

5. Application Fields

• Safety Shoes: Construction, manufacturing, logistics, mining.
• Military & Police Boots: Tactical operations, patrol missions.
• Outdoor Shoes: Wilderness exploration, hiking.
• Special Industries: Aviation security inspection, warehouse operations.

6. Our Advantages

• 100% Inspection Process: Each midsole undergoes strict testing to ensure stable performance.
• Lightweight Upgrade: Weight is reduced by approximately 40%–50% compared with traditional steel midsoles.
• Breathable & Comfortable: Combined with a breathable textile structure, it enhances all-day wearing comfort.
• Customization Services: Can provide different thicknesses, flexibility levels, and cutting solutions according to customers’ shoe style requirements.

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