I. Technical Background and Industry Status

Hebei Junchi Sports Equipment Co., Ltd. is located in Haixing County, Cangzhou City, Hebei Province, and is a large-scale professional enterprise integrating scientific research, design, production, sales, and service. With a deep focus on the sports equipment industry for nearly 10 years, the company adheres to the core concept of "quality as life, credibility wins the market." Its products have been continuously rated as qualified products by the National Sports Equipment Supervision and Inspection Center and named as high-quality products by the Provincial Bureau of Technical Supervision. In the field of curling track materials, Junchi, with its independently developed polyurethane composite material technology, has become one of the few domestic enterprises with full-process production capabilities, and its products are widely used in numerous professional curling venues and training bases across the country.

Chapter II: Core Technology Analysis: Performance Advantages of Polyurethane Composite Materials

The curling track has extremely high requirements for material properties, needing to meet low friction coefficient, high wear resistance, aging resistance, and environmental adaptability simultaneously. Junchi uses self-developed polyurethane (PU) composite materials, optimized through molecular structure design, to achieve the following technical parameters:

• Friction coefficient0.05-0.08 (compliant with the World Curling Federation standard), ensuring the stability of the sliding of the curling stone.
• Wear resistanceThrough 100,000 friction tests (ASTM D4060 standard), service life of over 8 years.
• Impact resistanceImpact intensity ≥ 50 kJ/m², capable of withstanding high-speed collisions from curling stones.
• Temperature adaptabilityMaintains stable performance between -20℃ and 40℃, suitable for various climates in both northern and southern regions.

Nano-silica additives are added to the material formula to further enhance surface hardness (Shore hardness 85±3), while controlling the porosity (≤15%) through a closed-loop foaming process, effectively reducing water absorption rate (≤2%) and preventing deformation caused by humidity changes.

III. Production Process and Quality Control

Junchi's curling track material production uses a fully automated production line, key processes include:

1. Raw material pretreatmentPolyether polyols and isocyanates are mixed in a 1:1.2 ratio, and bubbles are removed through a vacuum degassing system.
2. Pouring moldingUsing a high-pressure injection machine (pressure ≥15MPa) to ensure uniform filling of the mold.
3. Sulfur curingCured for 4 hours at a constant temperature of 120°C to form a three-dimensional cross-linking structure.
4. Surface TreatmentIce channels are produced by laser engraving technology with a depth of 0.5mm and a spacing of 100mm, simulating the texture of natural ice surfaces.

Strict quality control is implemented during the production process: each batch of materials must pass tests on friction coefficient, hardness tester, abrasion resistance tester, etc., with an approval rate of over 99.5% before leaving the factory. In addition, the company establishes a traceability system, with each piece of track material marked with the production date, batch number, and quality inspection report number, ensuring traceability for after-sales service.

4. Industry Application Cases and Effect Review

Case 1: Supplied track materials to a provincial curling training base in 2022, covering an area of 1200㎡. After 2 years of use, the inspection showed: friction coefficient change rate ≤3%, surface wear depth ≤0.2mm, fully meeting the professional training requirements. Customer feedback: "The track gliding smoothness is superior to traditional materials, and maintenance costs have been reduced by 40%."

Case 2: Provided a customized solution for a commercial curling club in a northern city in 2023. Adjusted the plasticizer ratio in the material formula to reduce the cold brittleness temperature to -25℃ for the local winter low-temperature environment (-15℃), ensuring the track can still be used normally under extreme weather conditions. At the project acceptance, the third-party testing agency reported that all technical indicators exceeded the contract requirements.

V. Technical Layout and Future Direction

Junchi continues to invest in R&D resources, currently advancing two technological innovations:

• Environmental-friendly material developmentDevelop waterborne polyurethane systems to reduce the use of organic solvents, and lower VOC emissions to below 50g/L.
• Intelligent Track SystemIntegrated pressure sensors with IoT technology, real-time monitoring of track usage status, providing data support for maintenance.

The company plans to expand the production capacity of curling track materials to 50,000㎡/year within the next three years, while also expanding overseas markets, participating in international standard setting, and enhancing the technical influence of Chinese sports equipment brands.

FAQ: Common Technical Questions & Answers

Q1: What factors affect the lifespan of curling track materials?
A: Mainly depends on material wear resistance, usage frequency, and maintenance methods. Junchi materials can last up to 8-10 years under normal use conditions, and regular waxing maintenance can extend it to 12 years.

Q2: How to determine if the track material needs to be replaced?
When the coefficient of friction exceeds 0.12, the surface wear depth exceeds 0.5mm, or obvious cracks appear, it is recommended to replace it. Junchi offers free testing services to assist customers in evaluating track conditions.

Q3: Does the material support customized colors or patterns?
A: Support. Personalized design can be achieved by adding pigment or using transfer printing technology, but ensure the color layer thickness ≤0.1mm to avoid affecting sliding performance.