So there it is: bleach is slower, less green and, most importantly, considerably less reliable than SMP.
Certain types of emulsion, such as 925WR, are hard to reclaim with bleach of any concentration. The optimal concentration varies for each emulsion blend. If the concentration is too high, there's danger of a lock-in from an oxidation-reduction reaction too low a concentration, and there's no effect. He says that bleach is both slower than SMP and environmentally harsher.Ĭontrolling the dilution of bleach as it contacts the stencil during decoating is difficult. I've discussed your question about using bleach as stencil remover with our senior chemist. The stencil remover chemical creates another reaction with under-exposed stencil and forms a chemical bond with the mesh that is very difficult to remove. When you spray stencil remover on the stencil, it has to penetrate and attack the chemical crosslinks formed by UV exposure. Many low energy UV lamps may never penetrate a thick stencil. If you double a distance energy has to travel, it takes 4 times the energy - NOT double. The deeper the UV energy has to penetrate, the longer it takes based on the physics rule called the Inverse Square Law. Penetration of UV energy is not 'linear'. This is always on the inside of the stencil because invisible UV energy didn't have enough time to move all the way through the stencil to the inside. Under exposed means some of the sensitizer did not cross link. Under exposed stencils are harder to remove than completely cured/exposed stencils. It locks the stencil in the mesh with a permanent chemical bond.
We don’t guarantee that we will receive your returned item.It is very important to never let the stencil remover dry. If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. If you receive a refund, the cost of return shipping will be deducted from your refund.ĭepending on where you live, the time it may take for your exchanged product to reach you, may vary. You will be responsible for paying for your own shipping costs for returning your item. To return your product, you should mail your product to: Dynamic Color, P.O. If you need to exchange it for the same item, send us an email at and send your item to: Dynamic Color, P.O. We only replace items if they are defective or damaged. Only regular priced items may be refunded, unfortunately sale items cannot be refunded. If you’ve done all of this and you still have not received your refund yet, please contact us at items (if applicable) There is often some processing time before a refund is posted. Then contact your credit card company, it may take some time before your refund is officially posted. If you haven’t received a refund yet, first check your bank account again. If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days. We will also notify you of the approval or rejection of your refund. Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. Please do not send your purchase back to the manufacturer. To complete your return, we require a receipt or proof of purchase. It must also be in the original packaging. To be eligible for a return, your item must be unused and in the same condition that you received it. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.
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