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High-density striped double-needle Lixin (stitch-bonded) nonwoven midsole insole board (1.0 mm – 3.0 mm). SATRA compliant flex endurance and high tensile strength for athletic & Strobel footwear. Free sample kits!
A striped double-needle Lixin midsole insole board (commonly referred to as stitch-bonded nonwoven insole board or Strobel board) is a high-performance nonwoven structural material manufactured by reinforcing polyester fiber webs with parallel rows of double-needle chain stitching. The signature colored stripes (typically blue, red, green, or black thread lines) serve both as a visual indicator of gauge/density and as structural stitch reinforcement that drastically improves dimensional stability and tensile strength. Designed primarily for Strobel lasting and athletic shoe construction, this board offers superior flexibility, breathing capacity, and moisture resistance without cracking under repeated flexing. Astreism supplies this material in standard flat sheets (1.00 m × 1.50 m or 0.914 m × 1.52 m) or continuous rolls with strict thickness options (1.0 mm – 3.0 mm).
Technical Specifications Matrix
| Engineering Property | Physical / Chemical Specification Benchmark | Test Standard Reference |
|---|---|---|
| Material Composition | 100% Recycled Polyester (PET) Web + Double‑Needle Chain Stitching Thread | ISO 2286‑1 |
| Thickness Selection | 1.00 mm – 3.00 mm (± 0.05 mm) | ISO 23529 |
| Tensile Strength (Longitudinal) | ≥ 850 N / 5 cm (High resistance to stitch tearing during lasting) | ISO 13934‑1 |
| Tensile Strength (Transverse) | ≥ 650 N / 5 cm | ISO 13934‑1 |
| Flexing Endurance (Bally) | ≥ 150,000 Cycles (Zero cracking, delamination, or fiber separation) | SATRA TM92 / ISO 5402‑1 |
| Stitch Tear Strength | ≥ 120 N (Puncture and seam‑pull resistant for Strobel stitching) | SATRA TM149 |
| Water Absorption & Desorption | High moisture wicking capacity (≥ 35% absorption, fast drying) | SATRA TM2 |
| Environmental Safety | GRS (Global Recycled Standard) Certified, REACH compliant, Non‑Toxic | ISO 17025 |
Double-Needle Stitch Bonding & Strobel Lasting Process
The double-needle stitch-bonding technique creates a mechanical lock between fibers without requiring heavy resin binders, maintaining flexibility and breathable porosity:
Manufacturing & Assembly Process Flow:
- PET Fiber Carding & Web Formation
- Double‑Needle Chain Stitching (Stripe Creation)
- Calendering & Surface Thermal Finishing
- Precision Die‑Cutting & Punching
- Strobel Sewing Machine Bonding to Upper
- Finished Strobel Shoe Assembly
- Carding & Stitching: Polyester fibers are layed into a uniform web. A high-speed double-needle loom passes continuous filaments through the web, forming parallel reinforced stripe lines.
- Thermal Setting: The board passes through heated rollers to stabilize the fibers, smooth the surface, and achieve precise gauge thickness.
- Strobel Sewing: The die-cut Lixin insole board is sewn directly to the bottom perimeter of the shoe upper using a Strobel stitching machine, creating a flexible sock-like shoe cavity prior to outsole attachment.
Industrial Application Scenarios
Astreism striped double-needle Lixin midsole boards are engineered for modern light-footwear manufacturing:
Athletic & Running Shoes
Lightweight gauges (1.0 mm – 1.5 mm) specified for Strobel-stitched sport shoes requiring maximum flexibility and energy return.
Casual & Lifestyle Sneakers
Medium gauges (1.75 mm – 2.25 mm) providing comfortable underfoot support, breathability, and shape stability.
Work & Safety Footwear
Heavy gauges (2.5 mm – 3.0 mm) used as structural insoles or laminated with EVA/EVA-latex foam for added cushioning under heavy load conditions.
FAQ
Q1: What do the colored stripes on the Lixin insole board signify?
A1: The colored stripes (e.g., single blue line, double red line, green line) indicate specific density levels and thickness grades (e.g., 1.25 mm, 1.50 mm, 2.00 mm) to help factory floor operators quickly identify and select correct materials during die-cutting.
Q2: How does Lixin board compare to traditional fiberboard (paper insole board)?
A2: Lixin board is a stitch-bonded textile material, making it significantly more flexible, breathable, and water-resistant than paper-based cellulose fiberboards. It will not break down, turn mushy, or delaminate when exposed to foot sweat or moisture.
Q3: What is the lead time for standard stock and sample requests?
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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
ASTERISM 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 
