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Introduce our products
High-density gray nonwoven fiber insole board (1.0 mm – 3.0 mm) for footwear manufacturing. High flex resistance, moisture absorption, SATRA compliant. Free samples!
Gray nonwoven fiber insole board (also referred to as cellulose or synthetic nonwoven insole paperboard) is a high-density, structural footbed foundation material manufactured from a compacted blend of recycled synthetic polyester (PET) fibers, cellulose pulp, and synthetic latex binders. Designed as the structural backbone for dress shoes, casual footwear, work boots, and athletic footwear, this material provides rigid heel-to-ball torsional stability while maintaining controlled forefoot flexibility. The signature slate-gray color indicates a balanced fiber density that resists edge fraying during die-cutting and prevents delamination when exposed to internal foot perspiration. Solamni produces this material in standard flat sheet formats (0.914 m × 1.52 m, 1.00 m × 1.50 m, or 36" × 60") with strict thickness gauges (1.0 mm – 3.0 mm).
Technical Specifications Matrix
| Engineering Property | Physical / Chemical Specification Benchmark | Test Standard Reference |
|---|---|---|
| Fiber Composition | Recycled Polyester (PET) / Polypropylene / Cellulose Fiber Matrix | ISO 1833 |
| Thickness Selection | 0.80 mm – 3.00 mm (± 0.05 mm) | ISO 23529 |
| Apparent Density | 0.55 g/cm³ – 0.85 g/cm³ | ISO 564 |
| Tensile Strength (Longitudinal/Transverse) | ≥ 12.0 MPa / ≥ 10.0 MPa | ISO 1924‑2 / SATRA TM2 |
| Delamination / Layer Peel Strength | ≥ 1.8 N/mm (High internal bond strength; zero split during lasting) | SATRA TM3 |
| Flexural Fatigue Resistance | ≥ 100,000 Cycles (Zero cracking or structural softening) | SATRA TM3 / ISO 5402 |
| Moisture Absorption / Desorption | Absorption: ≥ 35% / Desorption: ≥ 80% (Vents internal foot perspiration) | SATRA TM8 |
| Environmental Safety | REACH SVHC compliant, Formamide‑Free, Low VOC, Recyclable Fiber Matrix | ISO 17025 |
Manufacturing & Lasting Line Integration
Integrating gray nonwoven fiber insole board into shoe lasting lines provides clean die-cutting and reliable cement adhesion:
Footwear Assembly Process Flow:
- Sheet Stock Inspection
- Automated Hydraulic / CNC Die‑Cutting
- Shank & Heel Cushion Stitching
- Moisture Conditioning & Thermo‑Forming
- Upper Lasting Cement Bonding
- Finished Shoe Assembly
- Precision Die-Cutting: High-density needle-punched construction ensures clean, burr-free edges when stamped with steel clicker dies or cut via CNC drag knives.
- Conforming & Molding: The sheet accepts moisture conditioning and mild heat to mold precisely to the longitudinal arch and heel cup contours of the shoe last.
- Cement Lasting Bond: The surface texture accepts polychloroprene, polyurethane (PU), and hot-melt lasting adhesives, ensuring a permanent bond between the upper lasting margin, insole board, and outsole.
Industrial Application Scenarios
Solamni gray nonwoven fiber insole boards are specified across various footwear manufacturing segments:
01
Casual Footwear & Sneakers
Lightweight, flexible 1.0 mm – 1.5 mm boards providing stable underfoot support and breathability for daily wear.
02
Work & Safety Boots
Heavy-duty 2.0 mm – 3.0 mm boards engineered for torsional stability, shank reinforcement attachment, and puncture-resistant footbeds.
03
Dress Shoes & Boots
Medium-density 1.5 mm – 2.2 mm boards that maintain crisp perimeter lines along the lasting margin without telegraphing through thin upper leathers.
FAQ
Q1: What is the difference between nonwoven fiber insole board and traditional cellulose paperboard?
A1: Nonwoven fiber boards utilize synthetic polyester fibers bound by needle-punching and latex, offering significantly higher flex fatigue resistance and tear strength. Unlike pure paper/cellulose boards, nonwoven boards will not disintegrate or turn mushy when exposed to heavy sweat or water immersion.
Q2: Can steel shanks or arch supports be riveted or stapled to this board?
A2: Yes. The high internal bond strength and dense fiber matrix hold steel or fiberglass arch shanks, metal rivets, and lasting staples securely without tearing out or cracking under foot pressure.
Q3: What is the lead time for standard sheet sizes, custom gauges, and sample swatches?
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why choose us
why choose our products
We specialize in providing premium-grade materials for industrial applications. Our focus on wholesale sourcing ensures you receive competitive pricing on large orders, alongside flexible fabric customization to meet your exact specifications. Whether you need high-volume production runs or specialized orders, we ensure your success with fast delivery and exceptional support.
- Bulk Sourcing: Competitive pricing for large-scale orders.
- Customization: Flexible solutions tailored to your industry needs.
- Global Shipping: Fast, reliable delivery to international markets.
- High-Quality Standards: Rigorous testing and quality assurance to ensure performance and durability.
Elite Partners
Direct collaboration with DHL, FedEx, UPS, TNT, and EMS to ensure maximum shipping efficiency.
Custom Logistics
Flexible options covering air freight, sea cargo, and express door-to-door delivery.
Secure Transit
Professional packaging and full-course tracking for peace of mind.
Our Advantage
Sourced for Excellence: We meticulously select only premium-grade raw materials.
Expert Craftsmanship: Our team comprises experienced technicians operating advanced machinery.
Proactive QC: We implement rigorous in-line inspections throughout every stage of production.
Zero-Risk Standards: A dedicated QC team performs final double-inspections, fully compliant with your chosen AQL standards before packaging.
Unwavering Consistency: We maintain a strict, non-negotiable commitment to top-tier quality.
fAQ
A1: Approximately 25-35 days after all specifications and order details are confirmed.
A2: We typically require a 30% deposit in advance with the remaining 70% balance due before shipment. Alternatively, we accept a 50/50 split depending on the final order quantity.
A3: We accept T/T (Telegraphic Transfer), PayPal, and Western Union.
A4: Free samples are available! Custom sample preparation takes about 3-5 days once all details are confirmed
Solamni Import And Export Co., Ltd.
Let's build a profitable future together. We sincerely welcome global clients for long-term strategic cooperation. Contact us today-our team is ready to respond to your inquiries swiftly.
ace01@eurus-cn.com +8613459576329
Whatsapp+8613459576329
