CK-04 Polyurethane Adhesive

Physical state: Colorless to pale yellow, transparent liquid

Main chemical components: Terminal isocyanate prepolymer, high-purity solvent-free system

Viscosity (25℃, mPa·s): 5000–6000; moderate viscosity with excellent workability and good coating performance.

Tensile strength (MPa): 0.7, high-strength structure with outstanding tear resistance in the field.

Tensile elongation at break (%): 74; balanced toughness, suitable for various site deformation requirements.

Packaging specifications: 20 kg small drums (for repairs/small-area applications); 200 kg iron drums (for large-scale projects/whole-container exports for foreign trade).

① Pure solvent-free, eco-friendly formula—safe and non-toxic.

Adopting a brand-new solvent-free synthesis process, this product contains zero added benzeneor ester-based harmful solvents, boasts extremely low VOC content, and emits no pungent odors during application. It fully complies with the new national standard GB 36246-2018 for safety of school grounds and is suitable for constructing various types of public sports facilities.

② Ultra-high tensile strength and excellent physical properties

The tensile strength can reach 0.7 MPa, which is higher than that of conventional track adhesives. It boasts significantly improved tear resistance and impact resistance, making it ideally suited for sports venues subjected to high-frequency activities and frequent foot traffic. As a result, it is less likely to develop cracks, damage, or loosening over time.

③ Moderate viscosity and high construction stability

5000-6000mPa·s gold-grade construction viscosity, with excellent compatibility and integration with EPDM colored granules and black rubber granules. It mixes smoothly without clumping or settling, ensuring even coating of the particles. Suitable for both manual and mechanical application, it offers a high margin of error during construction and delivers a beautifully smooth finished surface.

④ Super strong adhesion, stable site structure

It exhibits extremely strong penetration and adhesion to cement-based surfaces, asphalt-based surfaces, and various rubber particles. After curing, the adhesive layer becomes dense and robust, effectively preventing common quality issues such as blistering, delamination, particle shedding, and layer separation on the site, thereby significantly extending the service life of the site.

⑤ Wide range of application scenarios and strong versatility

It can be used simultaneously for the base layer, surface layer of EPDM surfaces, and the elastic layer of breathable synthetic running tracks. One single adhesive meets the requirements of multiple construction processes, eliminating the need for frequent adhesive changes, simplifying the construction workflow, and enhancing overall project efficiency.

⑥ High cost performance and excellent engineering compatibility.

With high-performance characteristics comparable to premium rubber compounds, this product boasts an affordable price, low material waste, and a high pass rate for finished products. It strikes the perfect balance between quality and cost-effectiveness, making it the ideal, cost-efficient choice for school running tracks, community sports facilities, and overseas export projects.

The product has slightly poor yellowing resistance and may exhibit slight yellowing when exposed to intense outdoor sunlight over a long period. It is not recommended for high-end, aesthetically demanding surface applications but is more suitable for conventional sublayers and standard exterior surface construction.

1. Construction of the High-Performance Elastic Layer for Breathable Plastic Running Tracks

2. General Construction for Outdoor EPDM Rubber Surface and Base Layers

3. Construction and renovation of regular sports facilities in primary and secondary schools, kindergartens, and communities.

4. Park fitness trails and flexible recreational flooring project

5. Various sports venue projects with high requirements for structural strength and stability.

① Standard Breathable Track Project for Primary and Secondary Schools

In many regions across the country, standardized, breathable running tracks are being mass-produced using CK-04 adhesive. Thanks to its exceptionally high tensile strength, the track boasts a stable structure and excellent crack resistance once laid. It remains free from issues such as particle shedding or blistering even after prolonged use, and easily passes the national standard acceptance criteria in one go.

② Community EPDM recreational area project

EPDM playground surfaces, widely used in urban communities and parks for recreational purposes, feature moderate viscosity for smooth construction. The finished granules are tightly bonded and exhibit high flatness, making them ideal for frequent daily recreational use with extremely low maintenance costs over time.

③ General Sports Venue Project for Foreign Trade

We export large volumes to overseas regions such as Southeast Asia and the Middle East. We hold all necessary environmental certifications and offer stable, versatile performance that meets the construction standards for most breathable running tracks and EPDM surfaces overseas. Our repeat purchase rate among contractors remains consistently high.

Q1: What’s the difference between CK-04 glue and conventional 06 glue?

A: The two glues have similar viscosities, but...CK-04 has higher tensile strength (0.7 MPa).Its structural strength, tear resistance, and site stability are superior to those of conventional No. 06 glue. It boasts overall superior physical performance and is particularly suitable for projects with higher requirements for site firmness and durability.

Q2: Is CK-04 glue an environmentally friendly glue?

A: This is a pure, solvent-free, eco-friendly polyurethane adhesive that contains no added solvents and has low VOC emissions. It fully complies with the new national standard GB 36246-2018 testing criteria. It is non-toxic and harmless, making it safe to use in construction projects for schools, kindergartens, and public sports facilities.

Q3: Can it be used directly as an EPDM field surface layer?

A: It can be used normally as a standard floor surface with strong adhesion and stable performance. However, since it has moderate resistance to yellowing, prolonged exposure to intense sunlight may cause slight yellowing over time. For high-end, visually appealing surfaces, we recommend using a yellowing-resistant adhesive.

Q4: Is the construction difficult? Is it compatible with standard mixing equipment?

A: Simple construction with strong adaptability; standard viscosity of 5,000–6,000 mPa·s, compatible with commonly available track mixing equipment on the market. It ensures uniform mixing without clogging equipment, and offers a high margin of error for novice users.

Q5: How should I choose the packaging?

A: For small repairs, sporadic renovations, and small-area sites, we recommend using 20-kg small buckets—easy to store and with low wastage. For large standard playgrounds, bulk projects, and full-container orders for foreign trade, we suggest opting for 200-kg large buckets—offering lower unit prices and higher cost-effectiveness.