UV Adhesives / UV Curing Equipments / UV LED Equipments / UV LED Spot Equipments

Incure Litemask™ 8177G: A High-Temperature Light-Curable Peelable Maskant

Wave soldering and reflow expose a board and its neighbors to temperatures that break down an ordinary maskant at the mask edge. Incure Litemask™ 8177G is a high-temperature, light-curable peelable gel maskant built to hold its boundary through soldering heat and peel away without residue. The high-temperature masking problem A peelable maskant used near soldering has two jobs at once. It has to survive the thermal exposure of the process, and it has to come off cleanly afterward. Many masking materials do one or the other. A film that resists heat well often embrittles and shatters on removal; a film that peels easily often softens or chars at the mask line during soldering. 8177G is formulated as a tough-yet-soft film. It withstands the temperatures of wave soldering while retaining enough elongation to peel off in one piece rather than fragmenting into slivers that lodge between leads and pads. What it protects against The cured film shields surfaces from chemical stains, burnt marks, and other contamination generated during soldering and related processing. Typical use is masking gold fingers, press-fit connectors, test points, and mechanical features on a board or assembly that must stay solder-free and clean. The formulation is 100% solids with no volatile organic compounds and no acids, which matters on cleanliness-sensitive electronic hardware where residual ionic species could drive corrosion or electrochemical migration later. Cure options and control 8177G cures under UV, visible, or LED light. The reaction is a radical photopolymerization driven by energy near 365–405 nm. A repeatable cure depends on the delivered dose, measured in millijoules per square centimeter with a radiometer, and on exposure of every masked surface, including the shadowed side of tall components. Gel films built up thick, or masked areas sitting in a lamp shadow, are where cure lags. If the surface skins before the bulk sets, the underlayer stays soft and can leave residue on removal. Adequate dose and a fixture that presents all masked faces to the light keep the full film solid. Because UV output declines as sources age, intensity should be verified on a schedule. Batch trays cure under Incure L-Series UV LED flood lamps, and enclosed work fits an Incure B/C-Series UV cure chamber. Application and removal 8177G is applied by brush or dispense and shaped to the masked boundary. Its gel body holds position on vertical features and around component outlines without running. After processing, the film peels by hand; the goal is a single clean motion with no fragments left in tight spaces. Because it removes the slow work of fitting and burnishing high-temperature tape around connectors and fine-pitch features, the gel reduces the labor content of solder masking. For help matching Litemask™ 8177G to a specific soldering profile and peak temperature, Email Us with the process details and the surfaces being protected. Failure modes Charring or breakdown at the mask line means the film was exposed above its limit or held in the heat too long; set the masked boundary back from the highest-temperature…

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August 23, 2024
UV Adhesives / UV Curing Equipments / UV LED Equipments / UV LED Spot Equipments

Masking Vertical and Overhead Surfaces for Plating: A Process Guide

A thin masking resin applied to a vertical wall behaves exactly as gravity dictates — it runs. Getting a durable, uniform barrier on vertical faces, sharp edges, and overhead features during an extended plating or cleaning cycle takes a specific process built around a high-build maskant like Incure Litemask™ 4139, not just a different bottle of resin. Step One: Confirm the Geometry Actually Needs a High-Viscosity Grade Before starting the process, identify which faces of the part are vertical, overhanging, or carry sharp edges where a standard-viscosity maskant would drain or thin before cure. Litemask™ 4139's high viscosity is specifically what keeps it from sagging on these features and running off knife-edges — but that same viscosity means it takes deliberate handling on flat, horizontal surfaces where a lower-viscosity grade would level and flow more easily. Reserve 4139 for the geometry that actually demands it rather than defaulting to it across an entire part. Step Two: Prepare the Substrate Incoming cleanliness determines whether the mask bonds well enough to survive bath agitation. Remove oils, machining residue, and any oxide layer before application; a substrate that looks clean to the eye can still carry enough surface contamination to compromise adhesion during an extended immersion cycle. This step matters more for a thick-film maskant than a thin one, since a heavier film has more mass working to pull away from a poorly prepared surface once the part is agitated in a hot bath. Step Three: Apply in a Single Deliberate Pass, Not a Thin Multi-Pass Coat Despite its high viscosity, 4139 is workable by brush, dispense, or flow-coat, and it's designed to build a substantial film in one pass rather than requiring several thin coats the way a lower-viscosity resin might. On vertical walls specifically, apply from the top down in a controlled, even motion, letting the resin's viscosity do the work of staying in place rather than fighting gravity with a thinner, faster-draining material. A wet-film gauge check immediately after application, before cure, catches an inconsistent film thickness while it can still be corrected. Step Four: Cure to a Verified Dose, With Extra Attention to Film Depth A thick film is the primary under-cure risk with any high-build maskant: if the surface skins over before light penetrates to the full depth, the layer beneath stays soft and gives an aggressive bath a path to attack the substrate from within. Measure delivered dose in millijoules per square centimeter with a radiometer, and confirm recessed or shadowed masked surfaces — the underside of an overhang, for instance — actually receive that dose rather than assuming uniform exposure across a complex part. Add a heat step for any shadowed regions the light genuinely can't reach directly. An Incure CDM UV conveyor paired with a fixed belt speed, or Incure L-Series UV LED flood lamps for batch trays, holds this recipe consistent as lamp output changes with age. Step Five: Decide Whether a Second Coat Is Warranted For routine plating or cleaning cycles, a single…

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August 23, 2024
UV Adhesives / UV Curing Equipments / UV LED Equipments / UV LED Spot Equipments

Incure Litemask™ 1123G: A Peelable Gel Maskant for Soldering and Blast Protection

Soldering, sandblasting, and solvent cleaning all put localized stress on a part, and the surfaces next to the work zone need protection that stays put and then peels away clean. Incure Litemask™ 1123G is a light-curable peelable gel maskant designed for exactly that kind of temporary, high-contrast protection. Why a gel form A gel maskant behaves differently from a thin resin. It holds its shape on a vertical wall, does not run off an edge, and forms a defined boundary where it is placed. That makes 1123G suited to spot masking: covering a connector next to a soldering operation, protecting a machined face during grit blasting, or shielding an area from solvent splash without coating the whole part. The gel is applied by brush or dispense, cured in place, and removed by hand. It carries no adhesive, so there is no residue to clean off the protected surface afterward. Cure options 1123G cures under UV, visible, or LED light. The reaction is a radical photopolymerization driven by energy near 365–405 nm. A repeatable result depends on the delivered dose, measured in millijoules per square centimeter with a radiometer, and on every masked surface seeing that light. Shadowed regions behind standing features cure slowly and may need repositioning under the lamp or a supplemental pass. Because UV output falls as sources age, intensity should be verified rather than assumed. Batch work cures under Incure L-Series UV LED flood lamps at a set distance, and enclosed curing fits an Incure B/C-Series UV cure chamber. Protection during soldering, blasting, and cleaning The cured film resists the conditions of soldering processes, sand-blasting media, and a range of chemicals and solvents. For soldering, the film has to tolerate localized heat at the work zone without breaking down at the mask edge. For blasting, it has to absorb media impact rather than chip away. The gel's toughness and elongation give it the give it needs for both. That same elongation and toughness provide passive vibration isolation, which is why 1123G is also used where a protective layer needs to damp shock and vibration on a component during handling or transport. Removal 1123G is removed by soaking the masked component in hot water for about a minute, which relaxes the film so it peels away in one piece without breakage. Clean removal is a design goal of the grade: the film should not split into fragments that lodge in tight features or leave a skin behind on the protected surface. The maskant is also usable as a bonder for various substrates when a compliant, peelable-strength joint is wanted rather than a permanent structural bond. For help matching Litemask™ 1123G to a soldering profile, blast setup, or cleaning chemistry, Email Us with the process details and the substrate. Failure modes Tacky residue after removal is a cure symptom: add dose or reposition the part so shadowed areas get light. Tearing on peel that leaves gel in a recess usually means the film was applied too thin for the…

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August 23, 2024
UV Adhesives / UV Curing Equipments / UV LED Equipments / UV LED Spot Equipments

Incure Litemask™ 4153: A UV Light-Curable Masking Resin for Chemical Cleaning

Chemical cleaning strips oxides, scale, and old coatings from a part, but it does not distinguish between the areas you want cleaned and the ones you need protected. Incure Litemask™ 4153 is a low-viscosity, light-curable masking resin built to give temporary protection through those cleaning steps. Why a thin masking resin Some masking jobs need a heavy, standing film. Others need the opposite: a resin thin enough to flow into fine detail, wet out a knife-edge, and coat the wall of a small bore without pooling. Litemask™ 4153 is formulated on the low-viscosity end so it penetrates tight geometry and forms a uniform film rather than a thick, uneven bead. That makes it a fit for maintenance and overhaul work where components go through immersion cleaning, descaling, or chemical stripping and a defined set of surfaces, such as bearing bores, sealing lands, and machined datums, must come out untouched. Curing options and control Litemask™ 4153 cures under UV, visible, LED, or heat, which lets it fit different shop setups without a dedicated line. The core reaction is radical photopolymerization driven by energy in the 365–405 nm range. Two things decide whether the cure is repeatable: the delivered dose, measured in millijoules per square centimeter with a radiometer, and line-of-sight exposure of every masked surface. Thin films cure through their depth quickly, which is one advantage of a low-viscosity resin, but shadowed faces still lag. A short heat cycle finishes those regions. Because UV sources lose output as they age, a fixed exposure recipe drifts unless intensity is tracked; a controlled belt speed under a fixed lamp keeps it honest. An Incure CDM UV conveyor pairs a lamp head with a known speed, and Incure L-Series UV LED flood lamps cover batch trays at a measured intensity. Chemical resistance and surface neutrality The cured film resists a broad range of cleaning chemistries, so masked surfaces stay protected through the bath. Just as important, the resin is formulated to be non-affective: it does not stain, etch, or alter the masked surface before or after cure, and it lifts off cleanly. That matters on finished or close-tolerance surfaces where a masking mark is itself a defect. The resin is 100% solids with no volatile organic compounds, so cure shrinkage is low and there is no solvent flash to manage. Application A low-viscosity resin can be brushed, dipped, flow-coated, or dispensed. It self-levels into a thin, even layer and creeps into threads and blind features. Where a longer or harsher cleaning cycle calls for more barrier, a second coat builds film without losing the ability to reach fine detail. A wet-film gauge helps operators hold thickness consistent. Because it streamlines protection during plating and coating prep, 4153 reduces the labor content of masking compared with cutting and burnishing tape into complex features by hand. Failure modes to watch Bleed-under, where cleaning solution wicks beneath the mask edge, is the main risk on any masked part. A clean, oil-free surface removes the capillary path, and…

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August 23, 2024
UV Adhesives / UV Curing Equipments / UV LED Equipments / UV LED Spot Equipments

Incure Litemask™ 4272: A Peelable Masking Solution for Plating and Acid Lines

Selective plating and chemical processing depend on one thing working reliably: a mask that keeps solution off the areas it does not belong and then comes off without a trace. Incure Litemask™ 4272 is a light-curable peelable maskant formulated for etch, strip, and electroplating baths. The problem selective plating creates Few parts are plated all over. Bearing journals get hard chrome while the rest of the shaft stays bare. Connector contact zones get gold while the body does not. Chemical milling removes metal from a defined window and nowhere else. Every one of these operations needs a boundary that survives immersion, agitation, current flow, and rinse cycles without lifting. Tapes and machined boots handle simple cylindrical or flat features. They fall short on splines, radii, cross-drilled holes, and the irregular pockets of a casting. Litemask™ 4272 is applied as a liquid, cured into a tough elastomeric film, and peeled off in one piece, leaving no adhesive to clean and no masking marks on the finish. Chemical resistance in practice Litemask™ 4272 withstands chemical etching and acid stripping, including the acidic baths common to chrome and nickel plating and the caustic solutions used to strip failed coatings. The formulation is 100% solids with no volatile organic compounds, so it does not shrink significantly on cure and does not outgas into the shop. Chemical resistance is not only a property of the polymer; it is a property of the applied film. An under-cured layer beneath a thick section behaves like a weaker material and lets solution attack from within. Adequate film build and a verified cure keep the barrier intact for the full bath residence time. Cure paths and dose control The maskant cures under UV, visible, or LED light, with heat and activator options for shadowed regions. The reaction is a radical photopolymerization driven by energy near 365–405 nm. A production process needs two things measured: the delivered dose in millijoules per square centimeter, checked with a radiometer, and confirmation that recessed faces and the back sides of features actually receive light. Because lamp output falls as sources age, a fixed recipe drifts unless intensity is monitored. Batch trays cure under Incure L-Series UV LED flood lamps at a set working distance, and higher-output arc coverage is available from Incure F-Series UV flood lamps. Enclosed batch work fits an Incure B/C-Series UV cure chamber. Application and film build A moderate viscosity lets 4272 be brushed, flow-coated, dipped, or robotically dispensed. It penetrates threads and narrow gaps while still building enough thickness on vertical walls to form a continuous barrier. Multiple coats increase film build where a long or aggressive bath demands it. A wet-film gauge during application is the simplest way to hold thickness consistent between operators. Typical work includes masking shaft journals for hard chrome, masking terminal bodies for selective gold or silver, protecting datum and sealing surfaces during chemical milling, and shielding threaded features during passivation. Failure modes and how to prevent them Bleed-under is the dominant plating defect:…

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August 23, 2024
UV Adhesives / UV Curing Equipments / UV LED Equipments / UV LED Spot Equipments

Incure Litemask™ 4201: A Multi-Cure Peelable Maskant for Thermal Spray and Plating

Thermal spray, hard chrome plating, and chemical etch lines share one recurring problem: keeping the coating off the surfaces that must stay bare. Incure Litemask™ 4201 is a light-curable peelable maskant designed to hold a sharp boundary through aggressive processing and then release cleanly by hand. Where a peelable maskant fits Machinists have masked selective areas with tapes, silicone boots, and hot waxes for decades. Each method struggles with the same geometry: internal fillets, blind holes, cooling passages, and air vents on castings. A liquid peelable maskant is applied over those features, cured into a continuous elastomeric film, and later stripped in one piece with no adhesive residue. Litemask™ 4201 is aimed at high-energy operations: high-velocity oxygen fuel (HVOF) and plasma thermal spray, chromium and nickel electroplating, and acid stripping of worn coatings. The film has to survive grit-blast preheat, bath agitation, and elevated temperature without lifting at the mask line. Cure options and how to control them Litemask™ 4201 cures under UV, visible, or LED light, with heat or a surface activator as secondary paths. The primary reaction is radical photopolymerization of acrylated oligomers, driven by energy in the 365–405 nm band. Two variables govern a repeatable cure: delivered dose, measured in millijoules per square centimeter with a bench radiometer, and exposure of every masked surface to that dose. Recessed pockets and the shadowed side of standing features receive far less energy than the line-of-sight surface. For those regions, a short heat cycle or activator wipe finishes the film so it does not stay tacky. Lamp output drops as bulbs and LED arrays age, so periodic radiometer checks and a controlled conveyor speed keep the process in band. For inline curing, an Incure CDM UV conveyor pairs a fixed lamp head with a known belt speed, and Incure L-Series UV LED flood lamps cover batch trays at a measured intensity. Chemical and thermal resistance The cured film resists chemical etching and acid stripping baths, and the formulation is 100% solids with no volatile organic compounds. For thermal spray masking, 4201 is engineered so the film can be removed after exposure above 600°C during the HVOF or plasma process. That thermal history matters: a maskant that has been heat-soaked becomes stiffer and less extensible, so the film is easiest to peel while it is still warm and before it fully embrittles. Application and film build Low viscosity lets 4201 be dip-coated, flow-coated, brushed, or dispensed by robot, and it penetrates narrow gaps and threads. Film thickness is built with one or more passes and checked with a wet-film comb. Typical work includes masking turbine blade platforms and internal air passages, aerospace hardware headed for selective plating, and automotive parts moving through paint and plating lines. Failure modes to design against Most masking defects trace to one of four causes. Bleed-under happens when plating solution wicks along the substrate beneath the mask edge; an oil-free, clean surface and an adequate cured edge bead prevent it. Incomplete cure in thick sections leaves…

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August 23, 2024