Discharge printing is a process where water-based inks are applied to certain "dischargeable" dark colored garments to produce very bright, soft prints. As the discharge inks are printed and heat cured, the original dyes on the garment are being reduced, or "discharged", from the image area and the printed image is bonded to the fabric. The result is a brightly colored, opaque print which has been applied directly to a virtually "undyed" area of the fabric. These prints will have a very soft hand. Preprint Discharge is a discharge ink system designed for use as a spot color or underbase for water based or plastisol ink overprinting on dischargeable fabrics. Regular opacity and soft hand plastisols such as Excaliber 500 or Union Ink's Ultrasoft PLUE, PRPE, and PTHF Series are overprinted, producing bright, soft hand plastisol prints on dark 100%cotton fabrics. As the Preprint is a discharge product, the desired effect can only be achieved on "dischargeable" fabrics.
USES:As the Preprint is a discharge product, the desired effect can only be achieved on "dischargeable" fabrics.
FINISH:Bright, soft hand water based or plastisol prints on dark 100% cotton fabrics.
MIXING THE SYSTEM:The Discharge system consists of two parts: The Dischare White and UDSPP-9ZFS Discharge Agent. The DSPP-9ZFS agent is furnished as a powder in a separate container and sold separately.
Add 6-8% DSPP-9ZFS Discharge Agent by weight to the Discharge ink or base. Mix until totally dissolved. A power mixer is recommended.
CAUTION: Minimize the unused portion by only mixing enough of the ink system as will be used in one printing run. Use the entire mixture on the same day it is mixed.
DRYING TIME: A very common problem encountered during discharge printing is incorrect curing of the printed image. The discharge agent is only effective when it is mixed into a specially-formulated water based ink and steamed into the fabric at a very high temperature.
The discharge agent will not be activated unless the temperature of the print is raised to 320-350°F (166-177C). Also, the overprinted plastisol colors will only cure after the water has been completely evaporated from the Preprint Discharge underbase; therefore 1½-3 minute curing time is recommended.
Conveyor drying unit should be properly vented with adequate air flow to ensure successful discharge reaction and plastisol curing.
SCREEN FABRIC: Use monofilament polyester 156T mesh.
SCREEN COATING, FILM, BLOCKOUT: Use water resistant emulsion, preferable with hardener. Such as Ulano QT Discharge or 924WR.
PRINTING: Print on a hard pallet surface with a medium or hard, sharp squeegee. The squeegee must be sufficiently stiff to ensure that the discharge ink mixture is driven into the fabric.
When the plastisol ink is overprinted, the printed image may appear very weak and muddy and overpowered by the garment color. This should not cause concern as proper heat curing will trigger the discharging process in the Preprint Discharge and produce the desired effect for the overprinted image.
MULTI-COLOR PRINTING: Multi-color printing can be done wet-on-wet without flash curing in between colors.
SQUEEGEE: Medium to hard in the 70 to 80 durometer range.
WASHUP: Use water to clean screens and tools, or biodegradable washups 2300 or 5505 detergent.
ALWAYS TEST PRINT BEFORE PRODUCTION!
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| 1 | $ 78.83 |
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