A structural joint that spans glass, aluminum, and molded plastic in one assembly rarely fails because the adhesive chemistry was wrong — it fails because the viscosity grade was picked for the substrate instead of the joint itself. Incure’s Uni-Weld™ multi-substrates bonder line exists to remove that guesswork.
One Adhesive Line, Four Substrate Classes
Uni-Weld™ is formulated to bond metals (steel, aluminum, copper), plastics (polycarbonate, ABS, acrylic), glass, and ceramics — including joints where two or more of those materials meet in the same assembly. That matters more than it sounds: a facility that would otherwise stock a separate adhesive for each substrate pairing can consolidate to a single UV-curable urethane acrylate system, cutting SKU count and qualification overhead without giving up bond performance at any individual joint. The line cures under UV/visible light in the 365–405 nm range, so fixture time is set by exposure rather than by ambient humidity or a two-part mix ratio. That single variable — cure on demand, not on a clock — is also what separates Uni-Weld™ from the UV glue and epoxy trade-offs that come up whenever glass bonding is on the table.
Viscosity Spans 15 cP to 38,000 cP for a Reason
Joint geometry, not substrate, is the first selection variable. Uni-Weld™ 1800 runs 15–38 cP — a hyper-fluid wicking grade built to penetrate micron-scale gaps by capillary action alone, the profile needed for tight-tolerance electronics assembly or drawing adhesive into a hairline crack without disturbing surrounding material. The 1013 series (1013, 1013B, 1013V) sits at 550–1,100 cP, a middle wicking range suited to optical fiber splicing and general component bonding where some flow control is still needed. Move up to 1063 (1,700–3,400 cP) or 1095 (3,900–7,800 cP) and the adhesive holds its position for standard bead dispensing on rigid housings. At the top end, 1023T (9,000–18,000 cP) and 1023VT (19,000–38,000 cP) are thixotropic — they stay put on a vertical face instead of sagging, which is the only way a bead survives long enough to cure on an upright joint. Uni-Weld™ 1238, at 11,000–22,000 cP, occupies a similar high-viscosity band but is formulated specifically for glass, holding its shape during assembly rather than slumping before cure.
Elongation and Tensile Strength Drive the Rest of the Selection
Once viscosity narrows the field to grades compatible with the dispensing method, elongation and tensile strength decide which of those grades actually survives in service. Uni-Weld™ 1023 delivers roughly 737% elongation with tensile strength around 4,500 psi on plastics and 3,200 psi on metal-to-glass joints — a profile built to absorb continuous flexing rather than resist it. Uni-Weld™ 1283, by contrast, elongates only about 3.5%, trading flexibility for a high-modulus, rigid bond line suited to joints that need to hold dimension under load, not flex under it. Uni-Weld™ 1022 sits in between as a tack-free structural resin with high-modulus rigidity and strong gap-filling behavior, tuned for automated high-speed lines where consistent wetting matters more than elongation. Uni-Weld™ 1203, a mid-viscosity grade (450–900 cP) with roughly 35% elongation, is formulated specifically for load-bearing plastic-to-metal joints where the gap-filling and dimensional stability of a rigid system are needed without giving up all flexibility.
Email Us with the substrate pairing, joint geometry, and dispensing method for your assembly, and Incure’s engineers can narrow the Uni-Weld™ selection to a specific grade rather than a general viscosity range.
Matching Grade to Application
Glass furniture and retail display assembly call for Uni-Weld™ 1238, validated to withstand 80°C hot water immersion for two months without cohesive failure while staying non-yellowing under sustained thermal and UV exposure — a combination that matters for anything glass that stays visible after installation, the same concern that runs through most metal-to-metal and glass bonding comparisons engineers run before specifying an adhesive. Electronics ruggedization — handheld devices, avionics, automotive modules — favors the high-elongation grades (1013-series, 1403, 1435, 1444, 1475, 1483) that absorb vibration and thermal-cycling stress before it reaches a solder joint or wire connection. Component staking and wire tacking on PCB assemblies typically pair a low-viscosity wicking grade like 1800 for penetrating tight component gaps with a thixotropic grade like 1023T or 1023VT wherever the bond has to hold position on a vertical face without additional fixturing. Permanent-magnet bonding in motors, speakers, and sensors draws on the higher-tensile grades in the line, since magnet joints see sustained pull forces plus thermal cycling rather than a single static load.
Cure Equipment and Dispensing Compatibility
Uni-Weld™ cures under Incure’s UV LED spot lamps (L9000™), UV LED flood lamps (L-Series™), or UV cure chambers (B/C-Series™), with actual fixture time depending on UV intensity, working distance, and adhesive thickness rather than a fixed cure schedule. Because curing only starts when UV light is applied, the adhesive can be pre-applied through manual syringes, pneumatic dispensing systems, or automated time-pressure dispensers without a pot-life clock running in the background — open time is set by the operator, not the chemistry. That same on-demand cure profile is what makes Uni-Weld™ a practical drop-in replacement in assemblies that would otherwise depend on slower two-part systems, a substitution covered in more detail in Incure’s overview of thermally stable epoxy systems for metal, plastic, and ceramic bonding and in the practical case for bonding aluminum without welding wherever a mechanical or thermal joining process is being reconsidered.
Every Uni-Weld™ grade is RoHS and REACH compliant, supporting 2011/65/EU requirements across the full viscosity range — a baseline that matters for electronics assembly and any product sold into markets with chemical-substance restrictions. Contact Our Team to match a specific Uni-Weld™ grade to your substrate combination and dispensing setup.
Visit www.incurelab.com for more information.