Until now the only way that printers could add a foil effect to specific elements within a design was by using water-based ink. Excalibur has a plastisol solution. 801 Foil Proof is a clear coat plastisol that repels foil. Simply screen-print Foil proof over top of the plastisol where you do not want foil to stick. When you heat seal the foil onto the image, the foil will only stick to the parts of the design that are not clear coated. For best result we recommend using with a printable adhesive.
Stencil: All types
Adhesive: Use 845 Printable Adhesive for areas to be foiled. Or tint the 845 Printable Adhesive with ink colour similar to the foil. Print the adhesive thru 80-110/inch (32T- 43T/cm) mesh.
Mesh: 160 to 200/inch (48T to 80T/cm)
Reducer: Reducers are not recommended for this product. **Please note that inks should be thoroughly stirred prior to printing, inks are thixotropic and will naturally reduce with stirring.
Squeegee: Use a medium (70) durometer.
Printing Method: For best results, use a print/flash/print method to build up the areas where you want the foil to stick with the 845 printable adhesive. On non-foil areas, the goal is to achieve a thinner ink film than the areas to be foiled. A print/flash/print method with the 801 thru a finer mesh count is suggested for maximum foil resistance.
Other tips: Adding small amounts of 820 Puff Base to the adhesive creates a low loft, which will result in a higher surface area for the foil to adhere to. As a starting point we recommend adding 25% of the 820 base, by weight, to the 845 adhesive.
Adding small amounts (3% by weight or less) of the 801 Foil Proof to the ink will also aid in resisting foil. Be aware that adding more than 3% will affect the viscosity and opacity.
Curing: Gelling (dry to the touch) instead of fully curing the print initially, will result in a much better foil transfer. Heat pressing the foil at 375F (191C) will contribute to a proper cure. You may also consider putting the foiled garment through the dryer again at normal curing temperatures. Full cure can be reached when the entire ink film reaches 320F (160C). Light colours may require longer periods to obtain this temperature. Tests for product compatibility should always be conducted prior to production runs. Note: The amount of time it takes for the ink to reach a curing temperature will depend on the colour and thickness of the ink deposit. Curing is a time and temperature relationship. The longer the time or the higher the temperature or combination of these, the faster the cure. Temperature strips can be used to help read the temperature of the ink film, temperature guns can help read the surface temperature of the ink film. The absolute test is whether the print will stand repeated washings. An initial test to determine cure is, after curing allow the garment to cool to room temperature, the print should feel dry and firm when rubbed with your thumb. It should be able to stretch and relax without excessive cracking.
Clean up: TR-Blend or 2000 Green
Foil Application: Set heat press to 375F (191C). lay the foil over the image areas to be foiled, heat seal for 4-6 seconds with very light pressure. Peel foil slowly while still warm.
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