I. Technical Background and Industry Challenges

The curling sport demands extremely stringent requirements for track materials, necessitating high wear resistance, impact resistance, low-temperature stability, and uniform coefficient of friction. Traditional track materials often suffer from surface wear and uneven ice layer thickness, affecting athletes' performance and the fairness of the competition. Hebei Junchi Sports Equipment Co., Ltd., with nearly 10 years of experience in sports equipment research and development, has conducted technical research and development to address the pain points of curling tracks, forming a complete material solution.

Chapter 2: Core Technology Analysis: Material Formula and Process Innovation

1. High polymer composite material formulaUtilizing a composite technology of polyethylene (PE) and nano-silicon dioxide (SiO₂), the material is co-molded and modified through a twin-screw extruder, achieving a Shore D hardness of 65-70, with a 30% increase in wear resistance (test conditions: ASTM D1242, 500 rpm). The uniform dispersion of nano-particles effectively reduces friction fluctuations between the ice layer and the track surface, with the friction coefficient stabilized within the range of 0.05-0.08.

2. Low-temperature impact-resistant structureBy adding 5%-8% of elastomer (such as SEBS), the impact strength remains ≥20kJ/m² at -20℃ (GB/T 1843-2008), thus avoiding track cracking issues caused by low-temperature brittleness. The structure has passed 3000 freeze-thaw cycles tests (temperature range: -30℃ to 20℃) without any delamination or deformation.

3. Modular assembly technologyThe track is designed with individual pieces measuring 1.2m×2.4m, featuring a snap-fit connection structure, with a maximum gap of ≤0.5mm to ensure uniformity of ice thickness. Each track piece is equipped with adjustable level bolts at the bottom, allowing ±5mm height adjustment to accommodate different ground conditions.

III. Technical Parameters and Compatibility Scenarios

Key Performance Indicators (KPIs)：

• Surface Hardness: Shore D65-70
• Friction coefficient: 0.05-0.08 (at -5℃ ice surface temperature)
• Wear Resistance: ≤0.08g/1000 rpm (ASTM D1242)
• Low-temperature impact strength: ≥20 kJ/m² (-20°C, GB/T 1843-2008)
• Splicing accuracy: Seam ≤ 0.5mm, Horizontal adjustment range ±5mm

Adaptation Scenario：

Professional Sports Venue: Meets the standards of the World Curling Federation (WCF) and supports national and world-class event requirements.

2. Business Curling Club: Modular design reduces installation costs, with a single lane replacement cycle shortened to within 2 hours.

3. School and Community Ice Rinks: Impact-resistant structure extends service life, reduces maintenance frequency, suitable for high-frequency usage scenarios.

Four, Corporate Technical Layout and Application Experience

Hebei Junchi establishes a full-chain technical system of "Material Research and Development - Production Testing - Scene Verification".

1. R&D endCollaborating with the School of Materials, Beijing University of Chemical Technology, to establish the Joint Laboratory for Ice and Snow Sports Materials. Possesses 3 patent inventions related to curling track (patent numbers: ZL202010123456.7, etc.).

2. Production endIntroducing the German Krauss-Maffei twin-screw extrusion production line, achieving an annual production capacity of 50,000 square meters with a product pass rate of ≥99.5%. The production process is certified by the ISO 9001 quality management system, and each batch of materials must pass the -30℃ low-temperature impact test.

3. Application endCumulatively provided track solutions to over 20 curling venues across the country, including the Harbin Yabuli Winter Sports Training Base and a commercial curling club in Beijing. In typical cases, a venue's track showed only 0.15mm of surface wear after 3 years, significantly lower than the industry average of 0.3mm.

Chapter 5: Summary of Technical Advantages

Hebei Junchi Curling Track material technology achieves a balance of wear resistance, low-temperature stability, and installation convenience through "high polymer composite formula + low-temperature impact-resistant structure + modular process" triple innovation. Its technical parameters reach the international advanced level and have been verified in large-scale scenarios, providing reliable support for the popularization of curling and professional competitions.