User login

Boosting Garment-Printing Efficiency

(June 2012) posted on Tue Jun 12, 2012

Use the following tips to control the variables most commonly encountered in garment screen printing.


By Dawn M. Hohl-Nowlin

click an image below to view slideshow

Flash curing
Flash or spot curing is used to set or dry to the touch one or more ink layers before printing the next. Flashing is necessary for creating an underbase layer, controlling dye migration, printing light inks on dark garments, printing multiple colors on nylon, solidifying multicolor prints, and printing special-effect inks.
Flashing is also a crutch for many printers, used to compensate for improperly prepared artwork, incorrect color/print order, poor registration, poor ink preparation, incorrect mesh counts, and poor screen tension. Ink problems such as screen buildup and smearing with butt-registered colors are often addressed with flashing as well. In these cases, flashing simply bandages the problem and can be an efficiency killer.
Flash time, distance, and temperature are the primary control points with a given flash unit. Together, these three variables dictate the heat exposure on the ink. Finding the most efficient balance can help a printer save countless hours, reduce scrap and improve production speed.
Flash time or dwell is the main adjustment for flash curing inks. Once the flash distance and heat level are setup, the flash time is the fine tuning to bring the ink just to gel stage. The term flash curing is misleading because the goal of flashing is not to cure the ink. Flash curing is only used to bring the ink to 160-275°F (71-135°C), depending on the ink.
While common practice, excessive flashing not only wastes production time, but it also can create other problems. Over flashing, or fully curing, an underbase layer can hinder adhesion of the subsequent colors. It will also overheat the platens, which can cause ink to start gelling in the screens. The high heat can make fabrics shrink, scorch, and cause the platen adhesive to melt. Additionally, over flashing synthetics can trigger dye migration into the ink film, and some inks may shift color if the flash heat is excessive.
Flashing plastisol ink is influenced by the same variables as fully curing the print and is not a one-time-fits-all situation. Variables include fabric type and weight, shirt color, ink color, ink thickness, ink modification, room temperature and relative humidity, and platen temperature. As these change, your flash dwell will need to be adjusted accordingly to maximize efficiency.
Flash distance is measured from the bottom of the panel to the surface of the garment. The closer the distance is set, the higher the cure efficiency and production rate. It is also important to level the panel over the platens and to ensure the platens are leveled one to another.
Flash temperature can be controlled, provided the flash unit has a heat controller/regulator. Those flash units without this option run at the same temperature all the time. Generally, temperature is not frequently adjusted unless the fabric type is sensitive to heat. The distance and dwell time are the chief means of regulating flash exposure.


Terms:

Comments

jerrywong986 says: Purchasing shoes on the net may appear out belonging using the normal to you. subsequent all, how Herve Leger have you been designed to try the shoes on so that you simply can ensure an amazing fit Christian ...

Purchasing shoes on the net may appear out belonging using the normal to you. subsequent all, how Herve Leger have you been designed to try the shoes on so that you simply can ensure an amazing fit Christian Louboutin Outlet ? count on me; getting shoes on the net requires area an amazing offer extra on the standard time frame than you think. should you are ready to create the changeover to internet purchases, you're going to help save a amazing offer of money
Cheap MBT shoes .

posted on: Fri, 06/15/2012 - 2:38am
DSADSAFA says: Asian Fit Oakley sunglasses, designer sunglasses in the summer, has become an important fashion accessory, which also makes the world's great style.discount oakley sunglasses Movement to maintain a high ...

Asian Fit Oakley sunglasses, designer sunglasses in the summer, has become an important fashion accessory, which also makes the world's great style.discount oakley sunglasses Movement to maintain a high quality frame and comfortable point of view, to protect the role of eye

-safe, but also because of the need to replace the sun lens.Oakley sunglasses are those who want to protect your professional riders of the sun from the ultimate visual clarity,

especially for Kun pounds copy glare, polarized contact lenses oakley sunglasses outlet into the glasses OakleyWe are often

faced with the diffusion of pollutants, almost greatly ultraviolet atmosphere, totally like, like us from the sun
Concerning Can Eight the exact same twelve months, all the Aviator in addition to Wayfarer. Naval aviators found that the Aviator sunglasses besides look nice but in

addition supported a crucial work.ray ban sunglasses Your white-colored spots directly below ones own eyeballs due to any scopes they

can put on have been good enough the sun’s rays through the entire auburn typically the markings by themself. A good cig can be kept in destination by your standard all over

the nostril. Aviators sunglasses can covers the whole face and then to cease the sun’s rays reaching your eye area through the aspect with the glasses.The initial sunglasses

pattern to implement naff, this Wayfarer has been a extreme change. These were acquired 1952 just by Raymond Stegeman ray ban sale to

get Baush as well as Lomb.Much like the Avaitors

posted on: Tue, 06/19/2012 - 1:00am

Did you enjoy this article? Click here to subscribe to the magazine.