04/2016 - Direct digital textile printing total solution - Rimslow Global Pty Ltd

Go to content

Main menu:

Direct digital textile printing total solution

Published by George Sebek in digital textile printing · 28/4/2016 19:06:00
Direct digital textile printing total solution needs coater, steamer and washer.

Using reactive, acid, disperse, pigment ink:
  • Fabric must be pre-treated (coated) by chemicals to avoid ink migration and also improve ink penetration. That could be done on Wash-X (washing/coating) or Precoat-W, Precoat-Z and Precoat-ZP (coating only).
  • After printing ink must be cured and fixed. Reactive, acid and disperse by steam. Pigment by steam or heat only. Machine used – Steam-XL, Steam-X ECOM, Steam-X RDA or high speed steamers XL-Double, XL -Quattro
  • After steaming fabric must washed to get out pre-treatment chemical and residual of ink which was not fixed to the fabric. Washing by Wash-X
  • In the case using pigment, pre-treatment of fabric prior printing is required by most ink manufacturers. In this case Precoat-W, Precoat-Z and Precoat-ZP could be used if curing is done by heat only.
  • Pigment fixation could be done also steamed in our steamer. Per our experience by steaming pigment is giving better results (brightness)
Inks:
a. Reactive ink is for all natural fiber fabrics, including silk
b. Acid ink for some silk and nylon
c. Disperse is for manmade fibers (polyester)
d. Pigment - In my experience, pigment was always used for less expensive prints (getting washed out by time).
e. All inks needs pre-treatment, including pigment if you want to get reasonable results.
For the total solution for digital textile printer is recommend:
a. Wash-X 1850 with 2nd cold water tank version for pretreatment and washing
b. Steam-XL 1850 for fabric fixation. For small production could used also Steam-X 1850 ECOM, but will fit only 1-2 digital printers for reactive and disperse inks. For acid ink is just for 1 printer. (Curing time is 30-45 minutes for acid ink)
Recommended machines:
Steam-XL and Steam-X ECOM:
  • ECOM is small machine which could handle all types of dyes and also pigment. Machine is 1 scroll roller (fabric expander) prior fabric winding.
  • XL is also capable handle all types of dyes, but is with tensionless system (all rollers driven and analog tension regulation included). XL is with 2 scroll rollers to handle fabric better and production output is 2.5 higher as ECOM version.
Steaming temperatures:
102C – reactive, acid, saturated steam
Up to 180C – disperse, pigment, superheated steam
Temperature and steam amount is set automatically, when type of ink is selected on the control screen. No additional adjustments are required.
Wash-X:
Pretreatment/coating
  • Chemicals are automatically transported into coating tray where level is controlled.
  • Machine is coming with chemicals stirrer for chemical liquid storage
  • Machine is with tension control adjustable from control screen
  • Speeds are adjustable also and drying could be controlled as required
  • Amount of chemicals applied to the fabric is controlled by pressure on coating roller
  • Drying is by infrared dryer with temperature regulation up to 180C
  • On the end, fabric is winded into a roll on fabric winding unit equipped with fabric scroll roller (expander) and one side edge control to have fabric edge straight for printing.
Washing:
  • First is fabric going through cold water tank filled with recycled water from high frequency nozzles tray
  • 2nd stage is fabric going through hot water tank with adjustable temperature (max 65C or 95C).
  • All tanks have automatic control of dirty water discharge and refill according to meters’ preset
  • Hot tank is with auto filling of washing chemicals depended on liters of water discharged. (cold tank on request)
  • All tanks are equipped with water air agitation
  • After each tank fabric is squeezed by rubber rollers to get out dirt and ink residual
  • In 3rd step fabric is going through cold water bath created by water from high frequency nozzles
  • 4th step is final washing fabric by high frequency nozzles to clean the fabric prior going through last set of rubber rollers to squeeze out water prior drying
  • Drying and fabric winding is the same as in coating process.
Optional machines feature:
  • Decurlers are for circular knits used through coating and washing process and washer require 3 sets. (Precoat-W 2 sets only)
  • Fabric softener is additional module to Wash-X. This unit is consisting Hot fix tank and softener applicator. It is plug-in module and could be added to the machine later. 



Back to content | Back to main menu