Wood adhesive plays a critical role in furniture manufacturing, woodworking, and industrial assembly. PUR wood adhesive (polyurethane reactive adhesive) provides superior bonding strength, waterproof performance, and resistance to heat and moisture compared to conventional wood glues. Supex PUR wood adhesive is designed for bonding MDF, plywood, particle boards, laminates, and structural components where durability and long-term performance are required.
What is PUR Wood Adhesive?
PUR wood adhesive (Polyurethane Reactive adhesive) is a high-performance wood glue that cures by reacting with moisture to form extremely strong and durable bonds. It offers excellent waterproof resistance, heat resistance, and gap-filling properties.
Key Features of PUR Wood Adhesive
1. High Bond Strength
PUR wood adhesive provides exceptionally strong and durable bonding across a wide range of wood materials, including MDF, plywood, particle board, and solid wood. It creates long-lasting joints that resist mechanical stress and heavy loads.
2. Waterproof D4 Grade Performance
PUR wood adhesive offers D4 waterproof resistance, making it suitable for indoor and outdoor applications. It protects bonded joints from moisture, humidity, and water exposure, ensuring reliable performance in challenging environments.
3. Moisture-Curing Technology
PUR adhesive cures by reacting with moisture in the air or substrate. This moisture-curing mechanism allows it to create tight, gap-filling bonds even on slightly uneven surfaces.
4. Excellent Heat and Temperature Resistance
PUR wood adhesive maintains strong bonding performance under high and low temperature conditions, making it ideal for applications exposed to heat, sunlight, or changing weather conditions.
5. Gap-Filling Capability
Unlike conventional wood glues, PUR adhesive expands slightly during curing, allowing it to fill small gaps and irregularities in joints, resulting in stronger and more stable bonding.
6. Strong Adhesion to Multiple Materials
PUR wood adhesive bonds not only wood but also metal, plastic, foam, laminates, and composites, making it highly versatile for industrial and furniture manufacturing applications.
7. Fast Setting and Curing Time
PUR adhesive offers fast initial bonding strength, reducing assembly time and improving productivity in manufacturing and woodworking processes.
8. Resistant to Chemicals and Solvents
PUR wood adhesive provides resistance to oils, solvents, and mild chemicals, ensuring long-term durability in demanding industrial environments.
9. Sandable and Paintable Finish
Once cured, PUR adhesive can be sanded, painted, or finished, making it suitable for applications where surface finishing and aesthetics are important.
10. Long-Term Durability
PUR wood adhesive forms permanent, long-lasting bonds that resist ageing, vibration, and environmental stress, ensuring reliable performance over time.
Advantages of PUR Wood Adhesive
1. Stronger Bonding Performance
This adhesive creates stronger joints than traditional wood glues like PVA. It handles heavy loads and mechanical stress, making it suitable for demanding woodworking and industrial use.
2. Reliable Waterproof Protection
With D4-grade water resistance, it performs well in wet and humid conditions. This makes it ideal for kitchens, bathrooms, outdoor furniture, and moisture-prone areas.
3. Suitable for Indoor and Outdoor Use
It maintains bonding strength despite temperature changes, moisture, or weather exposure, making it effective for both interior and exterior applications.
4. Bonds Multiple Materials
Besides wood, it works effectively on:
- MDF and plywood
- Laminates
- Plastics
- Metals
- Foam materials
This versatility simplifies manufacturing processes.
5. Durable and Long-Lasting Joints
The cured bond resists ageing, shrinkage, and environmental stress, helping extend the lifespan of finished products.
6. Improves Production Efficiency
Fast initial strength reduces clamping time, allowing faster assembly and improved workflow in woodworking and furniture production.
7. Resistant to Heat and Harsh Conditions
It performs reliably in environments exposed to heat, humidity, and mild chemicals, making it suitable for industrial and kitchen applications.
8. Gap-Filling Capability
Slight expansion during curing helps fill small gaps, ensuring tight joints and improved structural stability.
9. Supports Smooth Finishing
Once cured, the bond can be sanded and finished cleanly, helping achieve professional-quality surfaces.
10. Helps Reduce Maintenance Costs
Strong, durable joints reduce the risk of failures, minimizing repairs and long-term maintenance expenses.
PUR Wood Adhesive vs PVA Wood Glue
Example table:
| Feature | PUR Adhesive | PVA Adhesive |
|---|---|---|
| Waterproof | Yes | Limited |
| Strength | High | Medium |
| Heat Resistance | High | Low |
| Outdoor Use | Yes | Limited |
Supex Wood adhesive 7150 PUR Adhesive
PUR Wood glue forms permanent bonds by a chemical reaction with moisture from the substrate or environment.
These “Cold” Liquid PUR adhesives are liquid at room temperature so bonded parts must be pressed together and held during the curing process.
Features & advantages of Supex glue:
- Great for wood, metals, ceramics, most plastics, HPL, Corian, stone and most porous/nonporous materials.
- 100% waterproof adhesive that bonds almost everything.
- Epoxy like strength; no mixing and fast cure time.
- Excellent Sandability.
- 100% solids and solvent free.
- Assembly time after glue application: 20-30 minutes.
- Application temperature: Above 25 C.
Supex Wood Adhesive – Supex 7150
Supex 7150 is a Liquid PUR wood glue that forms strong structural bonds on difficult-to-bond materials. It works well on wood, carpet, foam, metal, and most plastics. Avoid using it on vinyl (PVC), polypropylene, polyethylene, and polyolefins.
This adhesive produces highly durable, elastic bonds that perform across temperature extremes, from -40°C to +150°C. It can be custom-formulated for very high initial tack, a fast set in seconds, or a longer open time of several minutes.
After application, Supex 7150 begins to cross-link and build bond strength. Typically, it achieves 50–80% of its final strength within 3–6 hours, depending on air humidity and substrate moisture. Full curing takes 24–36 hours. Once cured, it forms a thermoset material, maintaining structural integrity under stress.
Supex 1K PUR adhesives are ideal for bonding large areas, such as steel to foamed polystyrene, panels in door manufacturing, garage doors, RV walls, and laminating foil to sheet metal. Spraying or roll coating often provides the best application for large surfaces.
Supex 7150 bonds permanently to solid wood, MDF, particle board, metal, paper, glass, wooden veneer, clear plastics, PVC, and foils. Its versatility, durability, and cost-effectiveness make it ideal for industrial and construction applications.
Moisture cure PUR VS Solvent based adhesive
Polyurethane Adhesives (PUR) should be seriously considered when switching away from a Solvent-based adhesive system. PUR adhesives have numerous advantages over solvent-based adhesives.
Primary advantages of using PUR adhesive
- Reduced cost of the adhesives, on a /Kg. basis.
- NO HAP’s or VOC’s, 100% Solvent Free.
- The elimination of a plant explosion risk; lower insurance costs.
- No more need for air pollution control devices.
- The removal of dryers in the production line.
Supex PUR adhesives are commonly used in the following Applications:
Area Of Use
- For indoor and outdoor use
- Wood against wood
- OSB/chipboard
- Styrofoam, foam rubber
- Metal, etc.
Profile Wrapping, Difficult to Bond-PET,PE,BOPP,UV, Foam & Mattress Fabricating, Furniture & Cabinet Assembly, R. V. and Panels, Woodworking and Picture Frames
General Product Assembly
Polyurethane-Based Adhesives; Wood Glue, Marine Adhesive, Pedestal Adhesive
Supex PUR Wood Adhesive bonds almost any material to wood, including ceramic, fabric, glass, metal, and stone. It excels in areas exposed to water, offering strong, durable adhesion. The glue is gentle on delicate or oily surfaces, such as waxed exotic woods like mahogany, without causing damage. Supex 1K PUR wood glue provides high-performance solutions for demanding applications.
In India, it is known as polyurethane wood glue, ship glue, sea glue, profile glue, marine glue, transparent marine glue, yellow glue, yacht glue, or glass fiber sea glue. Globally, it is called wood glue, PU marine adhesive, Aqua Seal PU adhesive, multipurpose PU adhesive, or rapid PU adhesive.
This versatile adhesive ensures reliable bonds, even under moisture or challenging conditions, making it essential for woodworking, marine, and industrial projects.
How to Use D4 PUR Adhesive
Do not use D4 PUR adhesive below +5 °C. Ensure all surfaces are clean, dry, and free from dust or grease. At least one substrate should be porous to improve curing. Slightly moistening the surfaces enhances adhesion.
Apply a thin layer of adhesive with a brush to one or both surfaces. Join the parts within 2 minutes and press them together for 15–20 minutes. You can clean uncured adhesive with acetone.
Because it cures with atmospheric moisture, the adhesive’s shelf life is limited once opened. Always keep the bottle tightly closed. Avoid storing above +35 °C or below -10 °C, as extreme temperatures can shorten shelf life.
Pressing time may vary depending on temperature, humidity, and surface porosity. Following these steps ensures strong, reliable bonds every time.
FAQs – Supex 7150 PUR Wood Glue
Is polyurethane glue good for wood?
Yes. Supex 7150 1K PUR glue is highly versatile. Unlike regular wood glue, it bonds wood, stone, metal, ceramic, foam, glass, concrete, and many other materials effectively.
How strong is polyurethane wood glue?
It offers strength similar to PVA glue, with shear and tensile strengths around 3,000–3,500 psi. However, its shorter shelf life, higher cost, and limited working time make standard wood glue more common for many woodworking tasks.
How do you remove 1K PUR glue?
Polyurethane adhesive is tough to remove using traditional methods. Acetone works best to dissolve and remove cured or uncured glue safely.
Is PUR glue toxic?
No. Supex 7150 is solvent-free and does not emit harmful fumes. It is non-toxic, environmentally friendly, and safe to use without extended drying tunnels.
One Response
Please share cost of 1k PUR along with pack size.
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Lokanathan
87544 22101