Chromaline ProCap 25 Diazo Capillary Film – Precision Meets Durability
Chromaline
Chromaline ProCap 25 Diazo Capillary Film is the versatile mid-thin ProCap — balancing fine halftone capability with enough ink deposit to handle a wider range of work including PC boards and UV printing. At 25 microns thick, it’s engineered specifically for 65 LPI halftones, fine graphics, decal production, PC boards, larger dot halftones, heavier UV ink printing, and general fine-detail textile work. Pre-sensitized diazo chemistry means no mixing or measuring — open the package, cut to size, and apply to your wet mesh. Drop ships direct from Chromaline’s South Carolina warehouse (allow 2-3 extra business days for processing and shipping). Browse all Chromaline capillary films in our capillary film category.
Price range: $102.65 through $152.15
Description
Versatile Mid-Detail & Fine Graphics
Chromaline ProCap® 25 Capillary Film is the versatile mid-thin ProCap — balancing fine halftone capability with enough ink deposit to handle a wider range of work including PC boards and UV printing. At 25 microns thick, it’s engineered specifically for 65 LPI halftones, fine graphics, decal production, PC boards, larger dot halftones, heavier UV ink printing, and general fine-detail textile work. Pre-sensitized diazo chemistry — open the package, cut to size, apply to your wet mesh. Drop ships direct from Chromaline’s South Carolina warehouse.
What Is Chromaline ProCap® 25 Capillary Film?
Capillary film is pre-sensitized photopolymer emulsion supplied as a dry sheet. Instead of coating your screen with liquid emulsion (and waiting hours for multiple coats to dry while fighting orange peel), you apply the film to a wet mesh, squeegee it down, and the capillary action of the wet threads draws the film into the mesh. The result: a perfectly uniform stencil thickness in minutes instead of hours.
Chromaline ProCap® 25 Capillary Film is the versatile mid-thin ProCap — balancing fine halftone capability with enough ink deposit to handle a wider range of work including PC boards and UV printing. The 25-micron stencil thickness is specifically calibrated for 65 LPI halftones — different thicknesses in the ProCap and Chromaline capillary film lineup are engineered for different LPI halftone ranges and ink deposit requirements.
Stencil thickness directly controls ink deposit. A 25-micron stencil deposits a specific volume of ink optimized for 65 LPI halftone work on 305-390 thread count mesh. Go thinner and your halftones get sharper but coverage drops; go thicker and coverage improves but fine detail blurs. The ProCap lineup exists because no single thickness handles every screen printing application — Chromaline ProCap® 25 Capillary Film is the right answer for 65 LPI halftones.
Where Chromaline ProCap® 25 Capillary Film Fits in the Chromaline Capillary Film Lineup
Chromaline makes capillary films across a wide thickness range — from 15 microns for ultra-fine detail up to 700 microns for extreme high-density 3D effects. Pick the thickness that matches your design’s LPI/halftone requirements and your ink type. Click any thickness to view that product:
The flex player — handles 65 LPI halftones AND can take the heavier UV ink loads that thinner ProCaps struggle with.
What Chromaline ProCap® 25 Capillary Film Is Used For
Chromaline ProCap® 25 Capillary Film’s 25-micron thickness is calibrated for these primary applications. If your work matches any of the below, this is the right capillary film:
Watch: How to Apply Capillary Film
Two video demonstrations from Chromaline showing the capillary film application process — start with the general technique overview, then watch the ProCap-specific walkthrough. The application method is the same for Chromaline ProCap® 25 Capillary Film: degrease, wet mesh, lay film, squeegee, dry, expose. Watch before your first attempt to see what proper film-to-mesh contact looks like in real time.
General capillary film application technique — the roll-down method that works for all Chromaline capillary films including Chromaline ProCap® 25 Capillary Film.
ProCap-specific application walkthrough — same technique applies to Quick Film and Super PHAT, with the bonding emulsion step optional or required depending on the film.
Step-by-Step: Applying Chromaline ProCap® 25 Capillary Film to Your Screen
The standard roll-down method below works for Chromaline ProCap® 25 Capillary Film. Larger production shops sometimes use spray-gun methods for lighter water application, but the roll-down approach is the proven workflow. Total active time: 10-15 minutes plus drying.
Start with a properly degreased, fully dry screen using mesh in the 305-390 thread count sweet spot for Chromaline ProCap® 25 Capillary Film. Yellow mesh is strongly preferred for any fine-detail capillary film work — it absorbs scattered UV during exposure for cleaner edges.
Open the ProCap film only under yellow safelight or low-wattage tungsten bulbs. AVOID daylight, fluorescent, quartz/halogen, and cool-white LED — these will pre-expose the film. Cut about 1″ larger than your image area.
Spray or wipe the mesh side with clean filtered water until uniformly wet — not dripping, not dry. The capillary action of the wet threads is what draws the film into the mesh.
With the film side DOWN (toward the wet mesh) and the Mylar carrier UP, lay the film flat. Smooth any wrinkles by hand before squeegeeing — once water wets the film, you can’t reposition it.
Use a soft squeegee or window-squeegee. Light pressure, working from center outward to push water and air bubbles to the edges. Multiple light passes beat one heavy pass.
For small bubbles in the image area, wet your finger and touch the bubble. Capillary action will pull the film tight to the mesh, eliminating the bubble.
Lay flat to dry. Diazo films like Chromaline ProCap® 25 Capillary Film typically dry in 2-4 hours depending on environmental conditions. Drying position doesn’t matter.
For maximum durability and edge definition, coat the print side with a Chromaline diazo or dual-cure emulsion (Hydro-X, CP-Tex, etc.) and dry again. This step is optional for short runs but adds significant longevity for production-volume work.
Diazo chemistry — moderate exposure time. Use metal halide or LED UV exposure (not fluorescent). Run an exposure step test on a small area first to dial in your specific shop’s optimal time. Wash out gently with low-pressure water, inspect for clean edges and full image.
Unlike Super PHAT (which REQUIRES a bonding emulsion), ProCap diazo films can be used standalone OR laminated with a Chromaline textile emulsion. For runs over a few hundred impressions, lamination significantly extends stencil durability. For short-run jobs, standalone application works fine.
Pro Tips for Chromaline ProCap® 25 Capillary Film
Distilled from Chromaline’s technical documentation, shop experience, and customer feedback. Save yourself the trial-and-error:
For Chromaline ProCap® 25 Capillary Film, target 305-390 thread count. Going too fine restricts ink flow; going too coarse loses the detail capability Chromaline ProCap® 25 Capillary Film provides. The mesh + capillary film combination is the system — neither works in isolation.
Yellow mesh absorbs scattered UV during exposure, preventing light bounce inside the threads. For halftone or fine-detail work, yellow mesh is worth the modest price premium — it saves screens from re-burning when fine edges blur on white mesh.
ProCap is diazo chemistry — moderate exposure time. If you’re switching from Quick Film (photopolymer) or other photopolymer films, expect to roughly DOUBLE your exposure time. Run a step test on the first screen of any new ProCap variant to dial in your shop’s optimal exposure.
ProCap can be used standalone, but for production runs over a few hundred impressions, laminating with a Chromaline textile emulsion (like Hydro-X Blue or CP-Tex) significantly extends stencil life. It takes 10 minutes more — but doubles or triples stencil durability.
Fluorescent exposure units don’t have enough UV intensity to fully cure capillary film, especially thicker variants like ProCap 38 and 50. If you have a fluorescent unit and you’re seeing soft edges or wash-out problems, the unit is the issue — not the film.
Every shop has slightly different exposure requirements based on lamp age, distance, mesh color, and ambient humidity. Burn a 21-step Stouffer wedge on a small test screen before committing your full daily screen run to a new ProCap variant. The 10 minutes invested saves hours of reclaim work.
Exposure Unit Requirements
All Chromaline capillary films need proper UV exposure to cure correctly. Underexposure causes the image area to wash out during development — leaving you with no usable stencil. Here’s what works:
- Metal Halide units (3-7KW typical) — the industry-standard exposure source
- LED UV exposure units — modern shop standard, fast cure times
- High-power mercury vapor lamps
- Used with yellow mesh for best edge definition on detail work
- Fluorescent / BLB exposure units — usually too weak for thick films
- Sunlight exposure — uneven, unpredictable
- Standard household UV lamps — not enough power
- Reptile bulbs & hobbyist UV — won’t fully cure
Capillary Film vs Liquid Emulsion — When to Use Which
Both have their place. For high-detail, halftone, and consistency-critical work, capillary film like Chromaline ProCap® 25 Capillary Film produces better results. For everyday standard plastisol work in mid-LPI range, liquid emulsion remains the cost-effective choice. Here’s the honest comparison:
| Factor | ★ Chromaline ProCap® 25 Capillary Film (Capillary Film) | Liquid Emulsion |
|---|---|---|
| Thickness Consistency | ★ Uniform across entire screen (factory-cast) | Variable — depends on operator coating technique |
| Edge Definition | ★ Sharper edges, especially at high LPI | Good with skill, but coating variability shows |
| Setup Time Per Screen | ★ Faster — one application, single dry | Multiple coats + dry between each |
| Cost Per Screen | Higher per-screen for consumable cost | ★ Lower per-screen consumable cost |
| Learning Curve | ★ Easier — uniform results regardless of operator | Coating skill required for consistent results |
| Best Application | ★ High-detail, halftones, consistency-critical | Standard plastisol work, larger format screens |
Stock Chromaline Hydro-X liquid emulsion for everyday standard plastisol work AND Chromaline ProCap® 25 Capillary Film for high-detail / halftone / fine-line screens. Each tool for its right job — forcing one to do the other’s work costs you time and quality.
Shipping & Drop-Ship Notice
Chromaline ProCap® 25 Capillary Film ships directly from Chromaline’s South Carolina distribution warehouse — NOT from our San Antonio facility. Please allow 2-3 extra business days for processing before standard shipping transit time. Most US destinations receive shipment in 4-7 business days total via standard ground.
The drop-ship arrangement means you get fresh, factory-direct inventory with no double-handling. FREE shipping applies on RCS orders over $200 (combined with other items as needed). Need it faster? Contact us — expedited shipping options may be available for an additional fee.
Other Chromaline Capillary Films
If Chromaline ProCap® 25 Capillary Film isn’t quite the right thickness for your work, Chromaline makes capillary films across the full thickness range. Browse the full capillary film category or jump to a specific product:
Technical Specifications
Product Identification
| Specification | Value |
|---|---|
| Product Name | Chromaline ProCap 25 Diazo Capillary Film |
| Manufacturer | Chromaline Screen Print Products |
| Category | Pre-sensitized diazo capillary film |
| Color | Diazo orange/red |
| Country of Origin | USA |
| Shipping Origin | Drop ships from Chromaline South Carolina warehouse |
Physical Specifications
| Property | Value |
|---|---|
| Film Thickness | 25 microns (0.025 mm) |
| Chemistry Type | Diazo (standard production cure rate) |
| Ink Compatibility | Plastisol and solvent-based inks |
| Recommended LPI Range | 65 LPI |
| Recommended Mesh Range | 305-390 thread count |
| Bonding Emulsion | Optional — Can be used standalone OR laminated with Chromaline diazo/dual-cure emulsion for production runs |
| Exposure Source | Metal halide or LED UV (fluorescent units typically insufficient) |
| Exposure Speed | Standard diazo — moderate exposure time |
| Recommended Mesh Color | Yellow mesh (especially for halftone work) or white mesh for solid color |
| Safelight Handling | Yellow safelight or low-wattage tungsten only |
Available Sizes
| Size Option |
|---|
| 26″ × 15′ roll |
| 26″ × 30′ roll |
Storage & Handling
| Detail | Value |
|---|---|
| Unopened Shelf Life | Approximately 2 years at room temperature, sealed |
| Storage Position | Flat in sealed container, cool, dry, dark area |
| Coated Screen Shelf Life | Use within 1 month — store in completely dark cabinet |
| Temperature Range | Room temperature (60-80°F ideal) |
| Light Sensitivity | High — avoid all daylight, fluorescent, halogen, cool-white LED |
Technical Sheets / Safety Data Sheets / Documents
📄 Chromaline ProCap Safety Data Sheet (PDF)
FREQUENTLY ASKED QUESTIONS
Product Identification
| Specification | Value |
|---|---|
| Product Name | Chromaline ProCap 25 Diazo Capillary Film |
| Manufacturer | Chromaline Screen Print Products |
| Category | Pre-sensitized diazo capillary film |
| Color | Diazo orange/red |
| Country of Origin | USA |
| Shipping Origin | Drop ships from Chromaline South Carolina warehouse |
Physical Specifications
| Property | Value |
|---|---|
| Film Thickness | 25 microns (0.025 mm) |
| Chemistry Type | Diazo (standard production cure rate) |
| Ink Compatibility | Plastisol and solvent-based inks |
| Recommended LPI Range | 65 LPI |
| Recommended Mesh Range | 305-390 thread count |
| Bonding Emulsion | Optional — Can be used standalone OR laminated with Chromaline diazo/dual-cure emulsion for production runs |
| Exposure Source | Metal halide or LED UV (fluorescent units typically insufficient) |
| Exposure Speed | Standard diazo — moderate exposure time |
| Recommended Mesh Color | Yellow mesh (especially for halftone work) or white mesh for solid color |
| Safelight Handling | Yellow safelight or low-wattage tungsten only |
Available Sizes
| Size Option |
|---|
| 26″ × 15′ roll |
| 26″ × 30′ roll |
Storage & Handling
| Detail | Value |
|---|---|
| Unopened Shelf Life | Approximately 2 years at room temperature, sealed |
| Storage Position | Flat in sealed container, cool, dry, dark area |
| Coated Screen Shelf Life | Use within 1 month — store in completely dark cabinet |
| Temperature Range | Room temperature (60-80°F ideal) |
| Light Sensitivity | High — avoid all daylight, fluorescent, halogen, cool-white LED |
Documents & Resources
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