TANAMAN PU ROCKWOOL SPONS BUSA MEDIA POLYURETAN HORTIKULTURAL Model 3D

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High-quality 3D assets at affordable prices — trusted by designers, engineers, and creators worldwide. Made with care to be versatile, accessible, and ready for your pipeline.

Included File Formats
This model is provided in 14 widely supported formats, ensuring maximum compatibility:
• - FBX (.fbx) – Standard format for most 3D software and pipelines
• - OBJ + MTL (.obj, .mtl) – Wavefront format, widely used and compatible
• - STL (.stl) – Exported mesh geometry; may be suitable for 3D printing with adjustments
• - STEP (.step, .stp) – CAD format using NURBS surfaces
• - IGES (.iges, .igs) – Common format for CAD/CAM and engineering workflows (NURBS)
• - SAT (.sat) – ACIS solid model format (NURBS)
• - DAE (.dae) – Collada format for 3D applications and animations
• - glTF (.glb) – Modern, lightweight format for web, AR, and real-time engines
• - 3DS (.3ds) – Legacy format with broad software support
• - 3ds Max (.max) – Provided for 3ds Max users
• - Blender (.blend) – Provided for Blender users
• - SketchUp (.skp) – Compatible with all SketchUp versions
• - AutoCAD (.dwg) – Suitable for technical and architectural workflows
• - Rhino (.3dm) – Provided for Rhino users

Model Info
• - All files are checked and tested for integrity and correct content
• - Geometry uses real-world scale; model resolution varies depending on the product (high or low poly)
• • - Scene setup and mesh structure may vary depending on model complexity
• - Rendered using Luxion KeyShot
• - Affordable price with professional detailing

Buy with confidence. Quality and compatibility guaranteed.
If you have any questions about the file formats, feel free to send us a message — we're happy to assist you!

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SURF3D
Trusted source for professional and affordable 3D models.

More Information About 3D Model :
Horticultural polyurethane (PU) foam media refers to a class of synthetic polymer substrates specifically engineered for precision agriculture, utilized primarily in soilless cultivation techniques such as hydroponics, aeroponics, and automated greenhouse systems. This material, often marketed as foam grow plugs, sponges, or cubes, serves as an inert rooting matrix for seed germination, vegetative propagation (cloning), and long-term physical support for crop cultivation.

### Material Composition and Properties

Polyurethane media is derived from a polyether or polyester polyol and an isocyanate, reacting to form a rigid or semi-rigid thermoset polymer structure. The resulting foam is characterized by a meticulously controlled open-cell structure, which is critical for optimizing the microenvironment surrounding the plant roots.

**Key Horticultural Characteristics:**

1. **Porosity Management:** Unlike organic substrates, the internal structure of PU foam can be engineered during manufacture to achieve precise ratios of water holding capacity (WHC) and air-filled porosity (AFP). Optimal ratios ensure adequate moisture retention while preventing anoxic conditions, supporting vigorous root respiration and minimizing the risk of root rot. Typical AFP levels in horticultural foam media range between 20% and 40%.
2. **Chemical Inertness:** PU foam is chemically benign, meaning it does not release minerals or organic compounds into the nutrient solution. This inertness ensures pH stability and minimizes interference with the precise nutrient delivery regimens required in high-tech hydroponic systems. Standard substrates are produced to be nearly pH-neutral (5.5–7.0) upon purchase, eliminating the extensive pH buffering required for materials like mineral wool.
3. **Physical Integrity:** The material possesses excellent structural durability and uniformity. This consistency minimizes physical damage during the delicate transplanting phase and allows for seamless integration into automated seeding and robotic handling machinery, crucial for large-scale commercial operations. The firmness provides reliable physical anchoring for developing plants.
4. **Pathogen Resistance:** As a sterile, non-organic material, PU foam is highly resistant to microbial degradation and the harboring of common plant pathogens, contributing to cleaner root zones and reduced reliance on chemical fungicides.

### Applications and Functionality

Horticultural polyurethane media is predominantly used in the propagation stage. Seeds or cuttings are placed directly into pre-cut starter plugs, which are then saturated with a dilute nutrient solution. The uniform moisture profile promotes high germination rates and synchronous rooting.

In hydroponic setups, these foam plugs are often transferred directly into net pots or channels (e.g., Nutrient Film Technique or Deep Water Culture systems). Their light weight and inherent buoyancy are advantages in liquid-based systems.

### Comparison to Rockwool and Other Substrates

PU foam media is frequently positioned as a superior alternative to traditional inorganic substrates, most notably mineral wool (commonly known by the trade name Rockwool), which is the industry benchmark.

| Feature | Polyurethane (PU) Foam | Mineral Wool (Rockwool) | Advantages of PU Foam |
| :--- | :--- | :--- | :--- |
| **Preparation** | pH-neutral; requires minimal pre-treatment. | Highly alkaline; requires significant pre-soaking and pH adjustment. | Reduced labor and preparation time. |
| **Handling** | Soft, non-irritating, structurally consistent. | Fibrous, can shed particles, posing minor respiratory and skin irritation risks. | Enhanced worker safety and cleanliness. |
| **Weight (Saturated)** | Extremely light due to low density. | Substantially heavier; increases shipping and structural load weight. | Easier transport and manual handling. |
| **Root ************* | Controlled density allows uniform, unrestricted root growth. | Fiber orientation can sometimes inhibit uniform lateral root expansion. | Optimized root architecture. |

### Environmental and Future Considerations

While polyurethane is not inherently biodegradable, its durability facilitates sterilization and multiple reuse cycles in controlled environments, extending its lifespan. Manufacturers are increasingly exploring sustainable formulations, including the use of bio-based polyols derived from vegetable oils or utilizing recycled polymer inputs, to mitigate the environmental impact associated with the disposal of plastic-based substrates. The high degree of control offered by PU media makes it increasingly popular in sophisticated vertical farming operations requiring precise environmental regulation.

KEYWORDS: Polyurethane foam, horticultural substrate, soilless cultivation, inert media, hydroponics, rockwool alternative, plant propagation, seedling plugs, cloning media, open-cell structure, air-filled porosity, water holding capacity, controlled environment agriculture, CEA, PU sponge, plant starter, root zone stability, thermoset polymer, pH neutral, vertical farming, net pots, mineral wool, grow cubes, nutrient film technique, deep water culture, synthetic substrate, automated planting, root development, non-degradable, polyol.