Ever stared at a beautiful screen-printed design and wondered how they made those crisp lines and vibrant colors? That magic often comes from something called emulsion. But choosing the right emulsion for your screen printing project can feel like navigating a maze. Should you pick diazo or photopolymer? What about sensitizers? It’s easy to get lost in the technical terms and end up with screens that don’t work right, leading to wasted time and ink.
Don’t let confusing emulsion choices stop your creativity! This post is here to clear things up. We will break down the world of screen printing emulsions in a way that makes sense. You will learn the differences between the main types and discover which one fits your printing style best. By the end, you will feel confident mixing and coating your screens like a pro.
Ready to move past guesswork and start printing with precision? Let’s dive into the details of emulsion screen printing and unlock your best prints yet.
Top Emulsion Screen Printing Recommendations
- Designed For Water Based & Plastisol Screen Printing - Developed for the screen printer who likes to use water base screen printing ink and mixing it up with plastisol silk screen ink. Our purple water resistant screen printing emulsion stands tough against water. Feel confident passing the squeegee over your designs repetitively, this is emulsion screen printing at its finest.
- Pre Mixed and Ready to Use - Take the guess work out of your silk screen printing kit with our ready to use emulsion. No mixing required with pre-sensitized water resistant emulsion. Make sure to use a good emulsion scoop coater to get clean and even coverage.
- Print in Your Favorite Ways - It doesn't matter if you are a seasoned vet with a 6 station screen printing machine or you are doing screen printing with kids. This is the perfect addition to your screen printing supplies and gives easy to use versatility.
- Works Great with All Exposure Units - Whether you are using an led exposure light unit, DIY 500 watt halogen light set up or an ultra violet LED light this silk screen emulsion will expose quickly and easy.
- Made in the USA - All of our silkscreen emulsion is made here in the USA and hand-poured by SPD's very finest to ensure ultimate quality. ADD TO CART NOW.
- Simple and Easy - Our AP Blue emulsion is one of the best screen printing supplies you can buy. Premixed and Pre-sensitized for ease of use and ready to apply to your screen printing screens right out of the canister.
- Use with your Favorite Products - Fully compatible with all plastisol ink screen printing techniques as well as UV ink. Make sure you pick up some emulsion remover for when you are done to reclaim your screens.
- Designed for Long Use - When used with your preferred silk screen printing kit this emulsion is ultra durable and must be cured with a strong emulsion exposure unit, DIY light is not recommended. Use an emulsion scoop coater for clean even coverage. is not an issue with this emulsion. Use an emulsion scoop coater for clean even coverage.mended. Use an emulsion scoop coater for clean even coverage.
- Perfect For All Skill Levels - Whether this is your first screen print kit or you are an advanced printer, Ecotex has your back. 12 month shelf life and proudly made in the USA.
- Extended Shelf Life - Pre sensitized photo emulsion does not require the addition of diazo and therefore has a very long shelf life of over a year! Perfect and economical silk screen emulsion for your print shop.
- Simple And Easy - Our Tex emulsion is one of the best screen printing supplies you can buy. Premixed and Pre-sensitized for ease of use and ready to apply to your screen printing screens right out of the canister.
- Use With Your Favorite Products - Fully compatible with all plastisol ink screen printing techniques as well as UV ink. Make sure you pick up some emulsion remover for when you are done to reclaim your screens.
- Designed For Long Use - When used with your preferred silk screen printing kit this emulsion is ultra durable and can be cured with a emulsion exposure unit, or DIY light . Neither is use is not an issue with this emulsion. Use an emulsion scoop coater for clean even coverage.
- Perfect For All Skill Levels - Whether this is your first screen print kit or you are an advanced printer, Ecotex has your back. 12 month shelf life and proudly made in the USA.
- Extended Shelf Life - Pre sensitized photo emulsion does not require the addition of diazo and therefore has a very long shelf life of over a year! Perfect and economical silk screen emulsion for your print shop.
- Beginner Emulsion - This emulsion is literally made to work with all screen printing inks. Newly developed for those just getting started or those with smaller projects in mind, this purple 8 oz. water-resistant screen printing emulsion will give its printers the versatility to print with plastisol or water-based screen printing inks.
- Pre-mixed, Pre-sensitized, and Ready to Use - Take the guesswork out of your silk screen printing kit with our ready-to-use emulsion. No mixing required with pre-sensitized water resistant emulsion. Don't worry about mixing diazos; this bottle is ready as is. Pairs seamlessly with Ecotex's Black Aluminum Scoop Coater 15", and that's a dynamic duo that everyone wants to see.
- Print in Your Favorite Ways - It doesn't matter if your doing a fun screen printing activity with your kids or a seasoned vet who needs a little extra emulsion for their silk screens, this little 8 oz. is perfect for the job. New and improved bottle sized for easy pouring. Pour with comfortability knowing your spill worries are no more.
- Works Great with All Exposure Units - Whether you are using an LED exposure light unit, a DIY 500-watt halogen light set up, or an ultra violet LED light, this silk screen emulsion will expose quickly and easily. This is the perfect addition to your screen printing supplies and gives easy to use versatility.
- Made in the USA - All of our silkscreen emulsion is made here in the USA and hand-poured by SPD's very finest to ensure ultimate quality. Find confidence in your squeegee pushes and pulls, knowing that this is emulsion screen printing at its finest.
- Photo emulsion is best for creating detailed or photographic type stencils for screen printing.
- Speedball’s Diazo Photo Emulsion is a 2-step process where the photo emulsion needs to be “activated.” To activate, the photo emulsion, sensitizer needs to be added. The sensitizer is a very thick oil and needs water to create the right consistency for adding it to the photo emulsion. (The sensitizer bottle will feel unfilled, but don’t worry it is not empty!)
- No need for a light safe environment or darkroom! Mix photo emulsion under normal light conditions.
- Set contains 1 each of the following: 6.6oz (195ml) Diazo Photo Emulsion; 2.12g Diazo Sensitizer; 8oz (237ml) Diazo Photo Emulsion Remover and Instructions.
- Conforms to ASTM D-4236.
- Jacquard Photo Emulsion & Diazo Sensitizer for silk screening.
- Mix together, following the instructions, then squeegee on the outside of the screen
- Simple and Easy - Our AP Blue emulsion is one of the best screen printing supplies you can buy. Premixed and Pre-sensitized for ease of use and ready to apply to your screen printing screens right out of the canister.
- Use with your Favorite Products - Fully compatible with all plastisol ink screen printing techniques as well as UV ink. Make sure you pick up some emulsion remover for when you are done to reclaim your screens.
- Designed for Long Use - When used with your preferred silk screen printing kit this emulsion is ultra durable and must be cured with a strong emulsion exposure unit, DIY light is not recommended. Use an emulsion scoop coater for clean even coverage.
- Perfect For All Skill Levels - Whether this is your first screen print kit or you are an advanced printer, Ecotex has your back. 12 month shelf life and proudly made in the USA.
- Extended Shelf Life - Pre sensitized photo emulsion does not require the addition of diazo and therefore has a very long shelf life of over a year! Perfect and economical silk screen emulsion for your print shop.
- Beginner Emulsion - This emulsion is literally made to work with all screen printing inks. Newly developed for those just getting started or those with smaller projects in mind, this purple 8 oz. water-resistant screen printing emulsion will give its printers the versatility to print with plastisol or water-based screen printing inks.
- Pre-mixed, Pre-sensitized, and Ready to Use - Take the guesswork out of your silk screen printing kit with our ready-to-use emulsion. No mixing required with pre-sensitized water resistant emulsion. Don't worry about mixing diazos; this bottle is ready as is. Pairs seamlessly with Ecotex's Black Aluminum Scoop Coater 15", and that's a dynamic duo that everyone wants to see.
- Print in Your Favorite Ways - It doesn't matter if your doing a fun screen printing activity with your kids or a seasoned vet who needs a little extra emulsion for their silk screens, this little 8 oz. is perfect for the job. New and improved bottle sized for easy pouring. Pour with comfortability knowing your spill worries are no more.
- Works Great with All Exposure Units - Whether you are using an LED exposure light unit, a DIY 500-watt halogen light set up, or an ultra violet LED light, this silk screen emulsion will expose quickly and easily. This is the perfect addition to your screen printing supplies and gives easy to use versatility.
- Made in the USA - All of our silkscreen emulsion is made here in the USA and hand-poured by SPD's very finest to ensure ultimate quality. Find confidence in your squeegee pushes and pulls, knowing that this is emulsion screen printing at its finest. ADD TO CART NOW.
The Ultimate Buying Guide to Emulsion Screen Printing
Emulsion screen printing lets you put your designs onto fabric, paper, or other surfaces. It is a fun and creative way to make custom shirts or art. This guide helps you choose the right gear.
Key Features to Look For
When buying emulsion screen printing supplies, look for a few important things. These features make your printing easier and your results better.
1. Emulsion Type
There are two main types: **Diazo** and **Pre-sensitized** emulsions. Pre-sensitized is easier for beginners. You mix it once, and it’s ready to use. Diazo needs a sensitizer added before use, which takes more time. Look for pre-sensitized if you are just starting out.
2. Scoop Coater Quality
The scoop coater spreads the emulsion evenly onto your screen mesh. A good scoop coater has clean, sharp edges. Worn or chipped edges leave streaks. Smooth coating means better detail in your final print.
3. Mesh Count Suitability
Mesh count is how many threads fit into one inch of the screen. Higher numbers (like 230 or 305) mean finer detail. Lower numbers (like 86 or 110) allow more ink through, good for thick colors or glitter. Choose a kit that includes a mid-range mesh (like 156) if you plan to print general designs.
Important Materials You Need
You need more than just the emulsion to start printing. Make sure you gather these essential materials.
- Screens: These hold the dried emulsion stencil. Aluminum frames are durable.
- Emulsion Remover/Degreaser: You need this to clean the emulsion off the screen after printing so you can reuse it.
- Squeegee: This tool pushes the ink through the mesh. A medium-firm squeegee works well for most projects.
- Ink: Water-based inks are usually easiest for beginners to clean up. Plastisol inks offer brighter colors but require heat curing.
- Light Source: You need a strong UV light source to expose (harden) the emulsion where your design is.
Factors That Improve or Reduce Quality
The quality of your print depends heavily on how you handle the emulsion.
Improving Quality:
Good quality comes from careful steps. **Proper mixing** of the emulsion ensures it hardens correctly. **Cleanliness** is vital; dust or oil on the screen ruins the stencil. Always ensure the emulsion is **fully dried** in a dark, dust-free area before exposing it to light. Over-exposure or under-exposure are common mistakes that weaken the stencil.
Reducing Quality:
Rushing the process reduces quality. If you expose the screen too long, the fine details wash out during rinsing. If you don’t rinse thoroughly, leftover emulsion clogs the mesh. Using old or improperly stored emulsion also causes poor adhesion to the screen.
User Experience and Use Cases
Emulsion screen printing offers a rewarding user experience. It feels professional once you get the hang of it.
Beginner Experience:
For beginners, pre-sensitized emulsion offers a smoother start. The learning curve involves mastering the coating technique and the exposure time. Expect some failed screens initially; this is normal as you learn the chemistry.
Use Cases:
You can use this method for many things. Create custom T-shirts for events or personal wear. Print unique artwork onto heavy paper or canvas. It is also great for making small batches of branded merchandise like tote bags or posters.
10 Frequently Asked Questions (FAQ) About Emulsion Screen Printing
Q: Can I use regular sunlight to expose my screen?
A: You can, but it is hard to control. Sunlight changes intensity quickly. A dedicated UV exposure unit gives consistent results, which improves quality greatly.
Q: How long does mixed emulsion last?
A: Pre-sensitized emulsion lasts about 40 hours once mixed, even in the fridge. Diazo emulsion lasts longer if stored correctly. Always check the instructions for your specific brand.
Q: What is the best way to clean ink off my screen?
A: For water-based inks, warm water and soap work well. For plastisol inks, you need a special ink remover solvent. Always clean the screen immediately after printing.
Q: Do I need a darkroom to work with emulsion?
A: You need a dark area for mixing and coating the screen because the emulsion hardens with any UV light, including standard room lights. Once dried, you must expose it only under a specific UV light source.
Q: Why does my design wash out when I rinse the screen?
A: This usually means the screen was under-exposed. The UV light did not harden the emulsion enough in the design area, so the water washes it away.
Q: What is “haze remover” used for?
A: Haze remover cleans the ghost image—the faint stain left on the mesh after many prints. It helps you completely clean the screen for a new design.
Q: Can I print on dark-colored shirts?
A: Yes, but you need a thicker layer of ink or a special white underbase layer first. Use a lower mesh count screen (like 110) to push more opaque ink through.
Q: Should I use a vacuum table for exposure?
A: A vacuum table holds your film positive flat against the screen. This contact is crucial. If the film lifts even slightly, the edges of your design become blurry.
Q: How do I store unused, unmixed emulsion?
A: Store it in a cool, dark place, usually away from light and heat. Check the manufacturer’s recommendation; some emulsions must be refrigerated before mixing.
Q: What is the difference between a detail screen and a standard screen?
A: A detail screen has a high mesh count (more threads per inch) for sharp lines and small text. A standard screen has a lower mesh count, letting more ink pass for block colors.