Knowing your screen printing experience level, and understanding the type of exposure unit you use is a big help when deciding between the different emulsions. If you are new to t-shirt printing, or have longer exposure times because you are not using an LED exposure unit, a dual-cure might be a good option for you. Dual-cure emulsion has a wider exposure latitude. Having a wider latitude makes it easier to develop wash-out your screen if you under or over expose your emulsion coated screen.
I recommend beginner silk screeners start out with Lawson Dual-Cure If you are a screen printer using an LED exposure unit, fast exposure times is key. The fastest exposing screen printing emulsions are photopolymers.
The chemistry of photopolymer emulsions make them great for fine details and half-tones. If you do not want to deal with the mess of applying liquid emulsion, a great alternative are emulsion sheets, also known as capillary film or direct film. First I found the best way to adhere them to the screen is by using a spray bottle and spraying the screen and the non-plastic side of the emulsion sheet.
Then apply the sheet carefully as the moment it touches the screen you're committed to the position it's in. It's super fragile until it's completely dry and set. In my very-little experience I was successful at creating 9 printable screens out of the 11 I attempted.
I think the two that didn't turn out well were a combination of not enough water ones I did before I thought to also spray the sheet and not being gentle enough when washing it out. Good luck I hope this helps! These work great! I am so glad to have an alternative to expensive YUDU brand products! I was surprised how well these worked and I wanted to truly test the product I usually use EZ Orange emulsion sheets and will continue to but these are great for a beginner just starting out priced to be affordable I was able to use an old Yudo machine set for minutes exposure time not the 14 they recommend and they worked great I really wanted to test this produce and I used my pressure sprayer to wash out after exposing didn't have any problems with the emulsion washing off I made multiple sized screens from 8x10 to 18x20 and the results were the same for all of them I haven't tested yet for durability of finished screens yet that's next and the reason why I didn't give 5 stars but so far I have been pleasantly surprised I tried this product at so many different exposures from 15 minutes to an hour and a half and it ALWAYS just washed right off.
Terrible product. An interesting process from the drawing fluid and vinyl methods I have used in the past. Forget fine lines and details with this material. One headache I had was the sheets sticking together as I tried to separate them in a darkroom. Only after exposing them did I realize I had two sheets stuck together which ruined both sheets.
The screen had to be cleaned and prepped again. Arghh Also exposure time was a lot longer then recommended for a good burn. These are the best emulsion sheets ever clean up so nice! Item arrived quickly and worked perfectly. Just what I needed and also the price was great. Great service as always from Dharma and the sheets are such a time saver! Clear sharp images and excpet for some operator errors are easy to apply. Received my order and used the product and was very happy with the results.
Customer Comments. Is your washout booth in the same room? If you work in a space that doesn't permit any light to enter and you have the right equipment, you can use either presensitized or diazo mixed emulsions. If you're working in a spare bedroom, bathroom, garage, or a space where there's a good chance light may enter at some point of the process, you'll want to stick with the diazo mixed emulsions. It's also a good idea to use diazo emulsions if you're using a bulb or an exposure unit without a lid since diazo slows down the reaction of curing.
Insider Tip : If you're using your backyard as your washout booth, try wetting your screen with a spray bottle before you go outside. By wetting the screen, you'll help prevent the emulsion from cross-linking with the screen before you're able to wash it out. It's also a good idea to put the screen in a black garbage bag when bringing it outside to further prevent the emulsion from cross-linking.
Create your account Lost password? First name. Last name. Company Name. Classes Online Classes My Courses. First, you must ask yourself a few questions: What experience level do I have with screen printing? Am I a beginner, intermediate or pro? What type of exposure unit do I have? What environment will I be washing out my emulsion in? Is it light-safe What kind of ink will I be using?
PROS: Exposes faster. Longer shelf life up to one year. Great detail resolution. CONS: Very sensitive — not for units without timers and needs to be washed out in light safe area. More expensive compared to diazo-mixed emulsions. Limited resistance to water exposure.
PROS: Cheaper. Forgiving on under or over exposure. Can be washed out under UV light as long as you have made the stencil wet before bringing the screen outside: sunlight can still expose the image.
Offers good detail. CONS: Shorter life span. Must to mix to use. Previous article Next article.
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