Viper XPT 6000, Руководство пользователя

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7.11 Appendix K
– Pretreating Basics with the Viper XPT-6000
Methods of Applying Pretreatment
There are several ways you can pretreat shirts for Direct-to-Garment printing. The three main
methods are:
1. Using a roller and manually applying pretreatment to the selected area.
2. Utilizing a HPLV sprayer like a Wagner Power Sprayer.
3. An automated pretreating system like the Viper XPT-6000.
Pros and Cons of Each Application Method
1. Roller:
Very precise in application area but extremely difficult to apply the correct
amount of pretreatment. No over spray whatsoever.
2. Spray Gun:
Very difficult to apply precise amount of fluid. Additional wasted
pretreatment in overspray or bounce.
3. Automated Pretreatment Machine:
With the Viper it allows for more precise
application of pretreatment by utilizing 6 independent spray zones (user defined). Much
more precise application of pretreatment fluid for consistent and repeatable results
from shirt to shirt. Minimized bounce and overspray.
Application Amounts of Pretreatment
The amount of pretreatment applied will vary based on a variety of factors:
1. Manufacturer’s Recommendations:
The manufacturer’s recommendations are always
first and foremost for application. However, some manufacturers don’t necessarily have
solid recommendations.
2. The Shirt Color:
We have found that darker shirts will require more pretreatment than
lighter shirts. The lighter the shirt, if excessive amounts of pretreatment are applied and
cured may result in scorching or a yellowing of the pretreated area.
3. Shirt Weight:
The heavier the shirt, the more pretreatment in general will be needed in
comparison to the same colored shirt but of a lighter weight fabric. A 6.0 oz.
heavyweight dark shirt may require 26-32 grams of fluid while the same dark shirt in a
4.0 oz. fabric may require only 20-24 grams of pretreatment.
4. Shirt Composition:
Depending on the composition of the shirt, this can also vary the
amount of pretreatment. A 50/50 shirt may require a different amount (usually less
pretreatment) than a 100% cotton shirt.