Rubber Adhesive
Rubber Adhesive Manufacturer & Supplier
Great Bridge supplies rubber adhesion promoters for rubber-to-textile and other reinforced rubber applications. The product range includes HMMM-based rubber adhesive and RA-65 methoxylated melamine resin.
These materials are used in rubber compounding systems to improve adhesion between rubber and reinforcing materials. HMMM functions as a methylene donor in suitable adhesion systems, while RA-65 is used with resorcinol, silica, or other compatible components depending on the formulation.
Product Types & Grades
HMMM High Performance Rubber Adhesive
HMMM (Hexamethoxymethyl Melamine) is a methylene donor used in rubber-to-fiber adhesion systems. It is incorporated into rubber compounds with compatible methylene acceptors or other adhesion-system components.
Typical evaluation points include ash content, moisture, sieve residue, and free formaldehyde.
Rubber Adhesive RA-65
RA-65 is a methoxylated melamine resin used as a rubber-to-fiber adhesion promoter. The published product information identifies resorcinol and silica as components used alongside RA-65 in the adhesion system.
It may be considered for reinforced rubber compounds where rubber-to-textile adhesion is required. Confirm compatibility and formulation requirements before replacing an existing resin or adhesion promoter.
Technical Specifications
The following specification is published for the HMMM product. It should not automatically be applied to RA-65 or other product listings.
|
Parameter |
HMMM Specification |
|
Chemical Name |
Hexamethoxymethyl Melamine |
|
CAS Number |
3089-11-0 |
|
Appearance |
White powder |
|
Ash Content (850°C) |
29–35% |
|
Moisture Content (boiling evaporation method) |
≤4.5% |
|
Sieve Residue (325 mesh, wet method) |
≤0.3% |
|
Free Formaldehyde |
≤0.1% |
|
Validity |
12 months, as stated in the product information |
Applications
Tires
Rubber compounds used with textile or steel cord reinforcement. Confirm the selected adhesion system is suitable for the specific tire compound and cord treatment.
01
Conveyor belts
Rubber-to-fabric adhesion in reinforced belt structures.
02
Rubber hoses
Adhesion between rubber layers and textile reinforcement in hose constructions.
03
V-belts
Rubber compounds used with textile reinforcement.
04
Industrial rubber components
Other reinforced products requiring rubber-to-fiber bonding.
05
Formulation Compatibility
HMMM acts as a methylene donor and is generally used with a compatible methylene acceptor in a rubber adhesion system. RA-65 is a methoxylated melamine resin identified for use with resorcinol, silica, or other compatible formulation components.
The two products should not be treated as interchangeable solely because they belong to the same broad product category. Confirm the required chemistry and formulation role before substitution.
Mixing and Vulcanization
Adhesion performance depends on the complete rubber compound and processing conditions, not on the adhesion promoter alone.
When evaluating a grade, consider:
Addition sequence and dispersion during mixing
Compatibility with the selected methylene acceptor and other ingredients
Mixing temperature and potential premature reaction
Reinforcement material and surface treatment
Vulcanization temperature and curing time
Adhesion results after curing and relevant aging tests
Dosage and mixing conditions should be established through formulation trials. A general dosage should not be assumed suitable for every rubber compound.
Manufacturing and Quality Control
Heze Great Bridge Chemical Co., Ltd. supplies rubber chemicals through a production system that includes reactors, dryers, pulverizers, granulators, mixing equipment, and automated process control systems.
The company states that its quality management system is certified to ISO 9001:2015 and that it operates product testing facilities. For rubber adhesive orders, buyers should confirm the applicable inspection items and request the current product TDS and batch COA.
Quality documentation should be checked against the agreed product grade and purchasing specification. Technical support is available for product selection and sample evaluation.
Packaging & Supply
Published HMMM packaging: 25 kg/bag.
Validity: 12 months for the HMMM grade, as stated in the product information.
Storage: Keep in a cool, dry, well-ventilated place, following the product SDS and label instructions.
Documentation: Request the current TDS, SDS, and batch COA for the selected grade.
Supply arrangements: Confirm order quantity, packaging, delivery schedule, and destination requirements with the sales team.
FAQ
Request a Quote
Looking for HMMM or RA-65 for a rubber-to-fiber adhesion system?
Send us the following details so we can identify the appropriate product information and prepare a quotation:
Required product or grade: HMMM, RA-65, or another specification
End application: Tire, conveyor belt, hose, V-belt, or other reinforced rubber product
Rubber polymer and reinforcement material
Existing adhesion system or formulation reference, if available
Required technical specifications and documentation
Estimated order quantity
Destination country and packaging requirements
Contact Great Bridge Chemical
Email: export@greatbridge-chem.com
Tel: +86-530-5399496
WhatsApp: 86 158 0675 1555
With abundant experience, we are one of the most professional rubber adhesive manufacturers and suppliers in China. We warmly welcome you to buy high quality rubber adhesive in stock here and get pricelist from our factory. Good service and reasonable price are available.
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