Overview
Environmental compliance has become a decisive purchasing factor in global electronics manufacturing. Two regulatory frameworks dominate the conversation: the European Union's Restriction of Hazardous Substances (RoHS) Directive and the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) Regulation. For adhesives used inside electronic devices, compliance with both is no longer optional for suppliers targeting the EU, North American and other regulated markets.
Super-curing has responded by developing a family of solvent free, low odor UV curing adhesives designed to meet RoHS and REACH requirements while delivering the curing speed, adhesion and reliability that modern electronics assembly demands. This article explains what RoHS and REACH mean for adhesive users, why solvent free low odor formulations matter, and how these products support compliant, efficient and worker-friendly production.
What RoHS and REACH Require of Adhesives
RoHS restricts the use of specific hazardous substances in electrical and electronic equipment. For adhesives, the most relevant restricted substances include lead, mercury, cadmium, hexavalent chromium, PBB and PBDE flame retardants, and the four phthalates added in the 2015 amendment. REACH goes further, requiring registration of chemical substances and restricting Substances of Very High Concern (SVHC) throughout the supply chain.
For adhesive formulators, compliance means more than avoiding a short list of banned metals:
- Full material disclosure: every ingredient must be traceable and documented through the supply chain.
- SVHC monitoring: the candidate list is updated regularly, requiring ongoing reformulation work.
- Restricted monomers: certain acrylate monomers such as IBOA (isobornyl acrylate) face increasing scrutiny due to sensitization concerns.
- Safety data and labeling: products must carry accurate SDS documentation and hazard communication.
Why Solvent Free Low Odor Formulations Matter
Traditional solvent-borne adhesives release volatile organic compounds (VOCs) during application and drying. In enclosed electronics plants, VOC emissions create odor, require ventilation and abatement equipment, and expose operators to unnecessary chemical risk. Solvent free UV adhesives eliminate this problem at the source:
- 100% solids, zero VOC: no solvent evaporation stage, no solvent recovery cost, and no VOC abatement burden.
- Low odor during dispensing and curing: a significantly improved working environment for line operators.
- Reduced sensitization risk: formulations avoiding IBOA and other high-sensitization monomers lower occupational health concerns.
- Fast UV or LED curing: cure in seconds instead of the minutes or hours required for solvent evaporation, cutting energy use and floor space.
Compliance and Performance in One Formulation
Meeting regulatory requirements is only the entry ticket. The adhesives must still perform under real production conditions. Super-curing's solvent free low odor UV adhesives combine compliance with the following verified characteristics:
| Property |
Typical value |
Production benefit |
| Regulatory compliance |
RoHS, REACH, ISO 10993 certified |
Qualified for EU and global supply chains |
| Solvent content |
Solvent free (100% solids) |
Zero VOC emissions, no solvent recovery |
| Odor |
Low odor formulations |
Better operator environment |
| Restricted monomers |
IBOA free options available |
Lower sensitization risk in handling |
| Curing energy |
300–1,500 mJ/cm², UV or LED |
Seconds-level cure, low energy consumption |
| Cure chemistry |
UV, UV moisture or UV anaerobic dual cure |
Shadow area curing for complex assemblies |
| Dielectric strength |
20–23 kV/mm |
Reliable insulation in electronic devices |
Applications Across Electronics Manufacturing
Solvent free low odor UV adhesives from Super-curing are used across the electronics value chain:
- PCB conformal coating: moisture-proof, insulating protection for boards in humid environments.
- Solder joint protection: reinforcement of cable and connector terminations against bending and pull-out.
- Component fixing: chip corner bonding, wire harness fixing and BGA corner bonding on assembly lines.
- Sealing: Type-C connector sealing, black light blocking encapsulation for optical assemblies.
- Structural bonding: UV anaerobic dual cure adhesives for metal and glass assemblies that pass wave soldering.
Conclusion
As environmental regulations tighten and buyers audit their supply chains more carefully, solvent free low odor UV adhesives have moved from a differentiator to a baseline requirement. Super-curing's RoHS and REACH compliant portfolio gives electronics manufacturers a single source for compliant adhesives without compromising cure speed, adhesion or reliability.
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