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Easybond Specific Adhesive – 40 Years of Excellence in Fire Door Adhesives
Time: 2026-07-27

A Legacy of Innovation Since 1988

Easybond Specific Adhesive (Jingjiang Special Adhesive Co., Ltd.) was founded in 1988 and has been dedicated to the research, development, and manufacturing of high-performance polyurethane adhesives for nearly four decades. Located in the XinGang Industrial Park, Jingjiang City, Jiangsu Province, China, the company occupies a sprawling 57,942 square meter facility equipped with a Postdoctoral Innovation Center and an Adhesive Research Institute.

As an ISO9001 and ISO14001 certified manufacturer, Easybond has established itself as a trusted name in the global adhesive industry, with the capability to independently develop and produce specialized adhesives that replace imported alternatives. Our Sanlian brand polyurethane adhesives are exported worldwide, serving fire door manufacturers across North America, Europe, Asia, and beyond.


Fire Door Adhesive – Engineered for Safety and Performance

In the demanding world of fire-rated door manufacturing, the adhesive is not merely a bonding agent—it is a structural reinforcement. If the adhesive fails, the door fails. Easybond’s MPU-20 single-component polyurethane adhesive is specifically engineered to meet the rigorous demands of fire door production, providing a bond that is as resilient as it is reliable.

Why Polyurethane (PU) Adhesive for Fire Doors?

Paper honeycomb cores offer excellent strength-to-weight ratios and insulation properties, but bonding them to cold-rolled or galvanized steel requires a specialized chemical approach. Easybond’s PU fire door adhesive delivers:

  • Exceptional Shear Strength – Creates a rigid yet slightly flexible bond that absorbs thermal expansion without delaminating
  • Heat Resistance – Maintains structural integrity during critical fire-rating tests, unlike standard glues that soften under heat
  • Optimal Open Time – Tailored for industrial production lines, allowing sufficient time for positioning while ensuring fast curing for high-volume output
  • Superior Steel-to-Paper Adhesion – High-strength chemical bond penetrates paper honeycomb fibers while anchoring firmly to galvanized or cold-rolled steel surfaces

Versatile Applications

Easybond fire door adhesive is widely used in the manufacturing of:

  • Fire-rated steel doors – Bonding steel skins to paper honeycomb cores
  • Fire-rated steel doors – Bonding steel skins to aluminum honeycomb cores
  • Fire-rated steel doors – Bonding steel skins to rock wool / mineral wool insulation
  • Steel to gypsum board, calcium silicate board, and perlite
  • Steel to fiberglass wool, ceramic fiber wool, and aluminum silicate fiber felt
  • Steel to polystyrene foam and PVC microcellular foam
  • Steel to plywood, MDF, and fire-rated decorative panels


Certified for the Global Market – UL, SGS, and Beyond

For international buyers, certification is the most critical factor. Easybond Specific Adhesive is built for the global market with comprehensive certifications:

✅ UL Fire Door Quality Compliance

Our products are formulated to meet USA UL door quality requirements, making them the ideal choice for manufacturers exporting to North America. Tested to withstand extreme high-temperature conditions while maintaining stable bonding performance.

✅ SGS Certified

Our adhesives have passed SGS testing, meeting international safety and environmental standards.

✅ National Fire Safety Certification

Backed by Chinese national fire-safety certifications, our adhesives have been rigorously tested in real-world fire door assemblies. The product has passed the National Fire Building Materials Quality Supervision and Inspection Center tests, with all nine indicators meeting GB 8624-2006 standards.

✅ Eco-Friendly & Low VOC

Our adhesives meet international environmental standards with zero formaldehyde, non-benzene, and low VOCs to comply with global green building regulations. Passed GB 18583-2001 non-benzene testing and GB 18583-2008 formaldehyde-free testing.

✅ ROHS Compliant

Fully compliant with EU Directive 2011/65/EU.

✅ ISO9001 & ISO14001 Certified

Manufacturing processes are certified to the highest quality and environmental management standards.


Technical Specifications –  Single-Component Polyurethane Adhesive

PropertySpecification
Product Model Single-Component Polyurethane Adhesive
AppearanceDark brown or brown viscous liquid
Density1.15 ± 0.05 g/cm³
Viscosity8–20 Pa·s
Working Time (Open Time)> 2 hours
Curing Time4–5 hours
Bond Strength (Metal-to-Metal)≥ 15 MPa (GB6329)
Bond Strength (Metal to Insulation)Substrate failure (GB6329)
Temperature Range-40°C to +200°C
Shelf Life24 months
Packaging25kg drums, 200kg drums, or IBC tanks

Key Features

FeatureBenefit for Door Manufacturers
High Solid ContentMinimal shrinkage, maximum gap filling between honeycomb and steel
Moisture ResistancePrevents delamination in humid climates during shipping or installation
Excellent SpreadabilityReduces waste, ensures 100% coverage on honeycomb edges
Foaming CureCured adhesive layer expands and becomes insoluble and infusible, offering exceptional high/low temperature resistance
Anti-Warping TechnologyPrevents "oil-canning" effect, ensures perfectly flat, premium finish
Adaptable to ProductionWorks with cold press or vacuum press; adjustable open times to fit factory workflow

Why Choose Easybond Fire Door Adhesive?

1. 40 Years of Specialized Expertise

Since 1988, Easybond has been at the forefront of polyurethane adhesive innovation. Our deep industry knowledge translates into products that consistently outperform expectations.

2. In-House R&D Capability

With a Postdoctoral Innovation Center and dedicated Adhesive Research Institute, we possess the independent capability to develop specialized adhesives that address unique manufacturing challenges.

3. Proven Export Track Record

We understand the logistics of international chemical trade. Our export-grade packaging (IBC tanks or 200kg drums) and comprehensive Technical Data Sheets (TDS) and Material Safety Data Sheets (MSDS) ensure smooth customs clearance and shop-floor implementation.

4. Trusted by Manufacturers Worldwide

Our fire door adhesive is trusted by manufacturers worldwide for safer, compliant fire doors. From 50+ story office towers to international airport terminals, Easybond adhesives are specified by architects and contractors globally.

5. Zero Formaldehyde – Safe for Indoor Environments

Our commitment to environmental safety means our adhesives contain zero formaldehyde and zero benzene, protecting both production workers and end-users.


Fire Door Adhesive – Frequently Asked Questions

Q: What is the best glue for honeycomb core fire doors?

A: A UL-certified polyurethane adhesive (like Easybond MPU-20) ensures fire resistance, strong bonding, and low smoke toxicity.

Q: Can I use regular glue for fire doors?

A: No! Standard glue burns quickly, fails under heat, and produces toxic smoke. Fire doors require specialized adhesives that maintain structural integrity under extreme temperatures.

Q: How do you apply honeycomb door glue?

A: Apply 1.5mm thickness, press facing within 5 minutes, and cure for 24 hours.

Q: Does this glue work for steel and wood honeycomb doors?

A: Yes! It bonds steel, wood, aluminum, and paper honeycomb securely.

Q: What is the temperature range?

A: Easybond fire door adhesive performs reliably from -40°C to +200°C.


Get Your Fire Door Adhesive Today

Upgrade your fire-rated door quality and ensure your products pass every inspection. Easybond Specific Adhesive is your trusted partner for high-performance polyurethane adhesives.

  • Company: Easybond Specific Adhesive
  • Brand: Sanlian
  • Founded: 1988
  • Email: easybond@easybondglue.com
  • WhatsApp: +86 13505260570
  • Fax: 0523-84256666
  • Contact: Ms. Ann Zhao (Overseas Sales Manager)

Easybond Specific Adhesive – 40 Years of Fire Door Adhesive Excellence. Your Global Partner in Polyurethane Bonding Solutions.


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EASYBOND CO.,ltd.

Address: Xingang Industrial Zone,JingJiang City, JiangSu Province, China.

Tel: +86 - 13505260570

Email: easybond@easybondglue.com

Website: https://www.highfrictionsurfacesystems.com

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