Vehicle occupant safety hinges on a secure windshield bond. When you need that bond to meet stringent crash safety standards like FMVSS 212, and you need it fast, there’s no room for error. Adhesion failures often stem from inadequate surface preparation or bypassing the tailored activator and primer sequence. Autoshield NP60 ensures the entire bonding system performs, delivering a 1-hour drive-away time compliant with dual airbags.
Autoshield NP60 was engineered to provide a reliable, rapid solution for direct-glazing windshields and side glass. Its formulation ensures high-strength bonding that meets the critical FMVSS 212 standard, enabling a 1-hour drive-away time even with dual airbags deployed. This preserves vehicle structural integrity and occupant safety, particularly crucial for modern vehicles, including those with aluminium bodies, where high green strength and rapid curing are essential.
While chemically formulated as a 'primer-less' polyurethane, achieving its specified performance relies on a precise system. This means using Autoshield Activator for plain glass surfaces, or Autoshield GB Primer for ceramic band areas. This distinct system ensures the high green strength and rapid FMVSS 212 compliant performance, setting it apart from general-purpose sealants.
The most critical metric for Autoshield NP60 is its ability to pass the FMVSS 212 crash test with dual airbags after just 1 hour at 23°C and 50% RH. This means vehicles are safe for return to service quickly, maintaining structural integrity and occupant protection without extended curing waits.
Its shear resistance of over 3 MPa after 5 hours (Ford SAE J 1529) demonstrates high green strength. This rapid development of bond strength is what enables the 1-hour drive-away time. Combined with an elongation at break greater than 700% and a modulus at break of approximately 6 MPa, it delivers a balance of flexibility and structural rigidity, absorbing vehicle dynamic stresses without compromising the bond.
The skin forming time of 20-35 minutes (at 23°C and 50% RH) provides a workable window for positioning and pressing the glass into place. It’s crucial to complete the glass installation and pressing before this skin forms to achieve optimal adhesion and bond integrity.
Application of Autoshield NP60 follows a mandatory 3-step system to ensure bond integrity and FMVSS 212 compliance:
For best results, store cartridges at 20°C before use, especially in cold weather, to maintain optimal flow and cure characteristics. Uncured sealant cleans up easily with Cleaner T or acetone. Cured material requires mechanical removal.
Autoshield NP60 is the final bonding step in a precise direct-glazing system. It depends on the preceding activation and priming steps to achieve its specified safety and performance criteria. The sequence ensures optimal adhesion to varied glass and body substrates, guaranteeing the fast, high-strength bond needed for immediate vehicle return to service. This integrated system is critical for preventing adhesion failures that compromise crash safety. Each component plays a distinct role in preparing the substrate for the final bond, from cleaning and activating to forming an adhesive linking film.
A vehicle fitted with Autoshield NP60 can be driven after 1 hour. This applies at 23°C and 50% relative humidity, meeting the FMVSS 212 standard for dual airbag deployment. This rapid drive-away time ensures quick vehicle return to service without compromising safety.
Autoshield NP60 is primer-less for plain glass, requiring only Autoshield Activator. For windscreens with a ceramic band, Autoshield GB Primer is necessary after light abrasion to ensure proper adhesion and prevent issues with silicone residues. Always follow specific prep instructions for each substrate.
Autoshield NP60 passes the FMVSS 212 crash test. This certification confirms it maintains structural integrity and allows for dual airbag deployment within 1 hour of installation, provided specified conditions (23°C, 50% RH) are met.
Yes, Autoshield NP60 can be applied between 5°C and 35°C. For temperatures between 5°C and 15°C, drying times will be twice as long. Always store the product at 20°C before use in cold conditions to ensure optimal performance and workability.
| Application | Key benefit | Primary trades |
|---|---|---|
| Windscreen replacement on passenger vehicles | Achieves 1-hour drive away time with dual airbags, meeting FMVSS 212 safety standards. This ensures rapid vehicle return to service. | Auto glaziers, smash repairers |
| Side glass installation | Forms a high modulus, flexible bond with high green strength, securing side glass quickly and reliably. | Auto body technicians, vehicle customisers |
| Bonding glass to aluminium vehicle bodies | Optimised for adhesion to aluminium, preventing compatibility issues and ensuring a durable bond for modern vehicle construction. | Vehicle manufacturers, specialist vehicle builders |
| Applications requiring rapid vehicle return to service | Fast moisture-curing polyurethane provides rapid green strength and cure, minimising vehicle downtime in busy workshops. | Fleet maintenance, auto repair shops |
Begin by preparing the vehicle. Remove mouldings and old glass, then trim the existing adhesive bed, leaving a clean, flat base of 1-2mm. Inspect the pinchweld for any corrosion; treat and repair as necessary. The job's integrity depends on this first step.
Using a fresh, lint-free applicator, wipe down both the pinchweld bonding surface and the ceramic frit band on the new windscreen with Adheseal Autoshield Activator. This crucial step removes contaminants and chemically prepares the surfaces for bonding.
Proper priming creates the unbreakable chemical link needed for a safe, OEM-quality bond.
Thoroughly shake the Adheseal Autoshield GP Primer can for at least one minute after the mixing ball is free. Apply a thin, even coat to the activated frit band and any bare metal repairs on the pinchweld. Ensure complete, solid coverage.
The final stage requires a steady hand and correct technique to ensure a perfect, leak-free seal.
Prepare the NP-60 cartridge and cut the V-notch nozzle to the required size. Apply a continuous, consistent, triangular-shaped bead of adhesive onto the primed glass or pinchweld. Ensure there are no gaps in the bead.
Carefully lift and set the new windscreen into position within 10 minutes of applying the adhesive. Apply gentle, even pressure to bed the glass into the adhesive, ensuring a proper wet-out and seal. Use setting blocks and tape to secure the glass during the initial cure.
Signal Word: Danger
Wear protective gloves (nitrile rubber recommended), apron, safety glasses, and a respirator. If inhalation risk exists, use an organic vapour/particulate respirator meeting AS/NZS 1715 and AS/NZS 1716 standards.
Ensure adequate ventilation, using local exhaust ventilation in enclosed areas. Avoid generating and inhaling dusts, fumes, gases, vapours, or spray.
Store in dry and cool conditions. Dispose of contents and container in accordance with local, regional, national, and international regulations, preferably by hazardous waste incinerator.
Proper surface preparation is crucial for achieving the specified performance and ensuring durable, compliant bonds.
Surface prep: Clean with acetone until residue-free. Avoid touching the prepared area. Then, apply Autoshield Activator using a wipe on/wipe off method with a clean, dry, lint-free cloth. Wipe off the activator 30 to 60 seconds after application, once the solvent has evaporated. Never clean old sealant with alcohol-based solutions.
Primer: Required. Use Autoshield Activator. Do not use if the activator appears cloudy.
Surface prep: Clean with a glass cleaner to remove impurities. Abrade the ceramic band lightly with a Scotch Brite pad (Very Fine - Red) using 5 back and forth movements to remove silicone residues. This action will not affect UV protection. Then, follow with acetone cleaning as for plain glass.
Primer: Required. Apply a thin, uniform film of Autoshield GB Primer with an applicator pad. Shake the bottle before use and close immediately. Allow primer to dry for 15 to 60 minutes, depending on temperature, before applying the sealant.
Surface prep: Clean with acetone until the surface is free of contamination. Repeat the cleaning process if necessary. Do not touch the prepared area after cleaning.
Primer: Not required. Autoshield NP60 is formulated for direct adhesion to properly prepared aluminium.
| Property | Value |
|---|---|
| Type Of Product | Polyurethane |
| Curing System | Moisture |
| Density Specific Gravity | 1.35 +/- 0.05 |
| Sagging ISO 7390 | None |
| Application Temperature | 5 °C to 35 °C |
| Skin Forming 23C 50HR | 20-35 min approx. |
| Cure Time 23C 50HR | 3 mm / 24 hr |
| Shore A Hardness | >50 |
| Shear Resistance 5hr 23C 50HR Ford SAE J 1529 | >3 MPa (130 psi) |
| Shear Resistance 7 Day 23C 50HR Ford SAE J 1529 | >3.5 MPa (500 psi) |
| Water And Salt Spray Resistance | Excellent |
| Temperature Resistance | -40 °C to 90 °C |
| Colour | Black |
| Modulus At Break ISO 37 | approx. 6 MPa |
| Elongation At Break ISO 37 | > 700 % |
| Tear Strength ISO 34 | approx. 20 N/mm |
| Crash Test Performance FMVSS 212 | Passes 1 hour with dual airbags |
Here are some common examples on where Adheseal NP-60 Polyurethane Windscreen Adhesive used by our customers.
