Bonding Plastics and Dissimilar Substrates

Tangent’s adhesives for plastic bonding can be cured with UV, UV/Visible, or only Visible light wavelengths. High adhesion is achieved when bonding dissimilar substrates, including combinations of polycarbonate, acrylic, ABS, polyurethane, polyethylene, stainless steel, and glass. They are well suited for assembling consumer appliances and electronics, screens and displays, product packaging, and a host of other applications involving combinations of plastics, metals and glass.

Solvent-free adhesive bonding (joining) of plastics with light curable adhesives can vary from a relatively simple process to something that is extremely challenging. Variables such as component configuration, molding humidity, surface energy, light transmission, and operating environment all influence which adhesive and bonding process best suits the application. On occasion, additional processes must be incorporated to mitigate some of these variables. For example, the bonding of plastics with low surface energy may require a pre-treatment process using plasma or corona discharge. Increasing surface energy improves the substrate’s “wettability”, which can dramatically improve adhesive bond strength.

The pioneering adhesive formulators at Panacol-USA have found methods to create more robust adhesives that possess greater cohesive strength with improved adhesion to a broader array of plastic substrates. Tangent’s expertise in light curable adhesives has led to the development of much desired soft, flexible adhesives that can be cured under low intensity UV and UV/Visible light. Despite using lower light intensity, Tangent’s adhesives fully cure in seconds, and exhibit dry, tack-free surfaces. These low intensity curable adhesives are part of Tangent’s LEDcure product line.

Tangent’s adhesives for plastic bonding can be cured with UV, UV/Visible, or only Visible light wavelengths. High strength bonds are achieved with a wide variety of substrates, including combinations of polycarbonate, acrylic, ABS, polyurethane, polyethylene, stainless steel, and glass. They are well suited for assembling consumer appliances and electronics, screens and displays, product packaging, and a host of other applications involving combinations of plastics, metals and glass.

The following table provides a quick summary of our selection of light curable adhesives best suited for plastics and dissimilar materials assembly. In the event that these standard products do not satisfactorily address your performance requirements, Tangent will investigate other solutions that include adhesive development specifically tailored to the complexity of your application.

Product NumberSuitable ApplicationsViscosity cP mPaShore Durometer24 Hour Water AbsorbtionLEDcureBondable SubstratesComments/FeaturesRequest
TDS button TDS
Sample button Sample
4641bonding plastics with multiple dissimilar materials1000-2500D25-35< 1.0%yesplastics, ceramic, glass,stainless steelUV/Visible cure, flexible, high elongation, tack-free surfaceRequest sample button TDS button
4731bonding plastics with multiple dissimilar materials900–1500D35-50< 1.0%yesmost plastics, ceramic, glass, stainless steelUV/Visible cure, clear, tack-free surface, suitable for medical device assemblyRequest sample button TDS button
5140bonding/laminating flexible materials and those with differing CTE values250-500A45-65< 1.0%yeswide range of plastics, ceramic, glass,stainless steelUV/Visible cure, extremely soft, highly flexible, tack-free surface, clear, suitable for medical device assemblyRequest sample button TDS button
70001bonding or sealing acrylic displays50-90D70-903.0%YesPMMA, PC, styrene, stainless steelUV/Visible light curable, hard, tack-free surface, wicking viscosity, moisture resistantRequest sample button TDS button
70001-VTbonding or sealing acrylic displays8,000-16,000D70-903.0%YesPMMA, PC, styrene, stainless steelUV/Visible light curable, hard, tack-free surface, high viscosity for gap-filling, moisture resistantRequest sample button TDS button
70012bonding or forming a seal between surfaces500-900D25-35< 1.0%yesPU, PVC, other plastics, stainless steel, ceramicUV/Visible cure, soft, flexible, high elogation, soft, waxy surfaceRequest sample button TDS button
7041needle/syringe assembly50-150D70-80< 3.0%yesstainless steel, polycarbonate, PVC, treated polypropylene/HDPEUV/Visible cure, low intensity curable, clear, moisture resistant, generates highest tensile strength with LED curing equipment, tack-freeRequest sample button TDS button
7090-V-HSbonding/potting rigid plastics10-150D80-90< 1.0%yesPC, PVC, polyester, other rigid plasticsUV/Visible cure, secondary thermal cure, low intensity curable, wicking grade viscosity, withstands autoclaving, very hard, clear, suitable for medical device assemblyRequest sample button TDS button
7173-Vbonding PVC and polyethylene components200-300D70-79< 4.0%yesPVC, PC, other plasticsUV/Visible cure, best for highly plasticized PVC, tack-free surface, suitable for medical device assemblyRequest sample button TDS button
7200-VFbonding combinations or rigid and flexible plastic1000-2000A60-80< 10.0%yesPVC, PC, polyester, other plasticsUV/Visible cure, low intensity curable, high peel strength, soft, flexible, fluorescing, resitant to salt spray and thermal cyclingRequest sample button TDS button
7551bonding rigid plastics1300-2000D80-90< 1.0%yesPC, PVC, styrene, some metalsUV/Visible cure, low intensity curable, clear and very hard, highly resistant to yellowing and moistureRequest sample button TDS button
7551-VFbonding rigid plastics1300-2000D80-90< 1.0%yesPC, PVC, other plasticsUV/Visible cure, low intensity curable, tack-free surface, fluorescing, suitable for medical device assemblyRequest sample button TDS button
7555-VCbonding or coating rigid plastics1300-2000D80-90< 1.0%yesPVC,PC, other plasticUV/Visible cure, low intensity curable, modified for better wetting, very hard, tack-freeRequest sample button TDS button
7631bonding or sealing acrylic displays100-300D70-90< 9.0%yesPMMA, PC, other plasticsUV/Visible cure, low intensity curable,high tensile strength, low viscosity for capillary flowRequest sample button TDS button
7989-Vreservoir assembly/plastics bonding3000-5000D45-55< 5.0%yesPC, ABS, PVC, polyesterUV/Visible cure, clear, moisture resistant, flexible, tack-free, suitable for medical device assemblyRequest sample button TDS button
8400bonding/laminating of flexible plastics100-200D40-50< 2.0%noPE, Mylar, PVC, PC, polyester, other plastics, and stainlessUV cure, very flexible, clear, excellent for strain relief and lamination, high peel strength, UV/Visible cure version available, suitable for medical device assemblyRequest sample button TDS button

*Note: viscosity variations are typically available, or can be formulated, for all listed products. Please inquire with Panacol-USA Applications Engineering for viscosity ranges not shown in the table.
**Note: modifications can be made to most products in order to meet unique performance requirements. Adding fluorescing properties, color, and secondary curing mechanisms are typical examples of minor modifications. Please contact Panacol-USA Applications Engineering to discuss your specific requirements.

Contact Panacol-USA for more info.