Stretch Devices Constant Force Squeegee™
- Eliminates squeegee length variations caused by sharpening and solvent attack which changes the squeegee flex angle.
- NEVER sharpen another squeegee blade. Simply replace the tip when needed at 1/2 the cost of a conventional squeegee.
- Minimal squeegee pressure and angle adjustment are required with
each print run since the squeegee dimension and flex angle are constant.
- Uniform ink film thickness is easily achieved.
- Improved color and print definition using less squeegee pressure.
- Unique design constantly rolls & mixes the ink keeping it fluid and smooth
- Reduces carding since the ink uniformly tracks down the frame.
- Reduction in ink climbing up the handle.
- Specially formulated urethane tips in various durometers will typically last 6 months to 2 years.
Easy clean up - no screws to trap ink.
*Personal Note From Mike Fresener
I have watched innovation in this industry all of my life. I have used just about every type of squeegee and every squeegee handle profile from short to tall and all of the ergonomic styles. I simply cannot recommend these squeegees enough! If you have carpel tunnel problems, these can REALLY help. If you have problems getting white ink through your screens, these can REALLY help! If you need to get your body weight behind your squeegee because you have a small frame, THESE CAN REALLY HELP! They are a "push" style squeegee and I can type all I want but it won't compare to actually trying a few of these on a job. You may test one at a tradeshow and feel the difference, but the REAL difference will be felt when you actually use them in a longer print run. ~Mike Fresener
PREPARED AND WRITTEN by DON NEWMAN After 12 years of developing the economical NEWMAN CONSTANT FORCE SQUEEGEE (on average 1/2 the cost of a conventional squeegee) the squeegee is no longer a variable.
squeegee varies its length due to sharpening combined with solvent
attack, which changes the flex angle of attack on the ink. This changes
the pressure on the ink significantly during long print runs and between
subsequent print runs. Like screen tension, the conventional squeegee
is a larger and more significant variable than first meets the eye.
The NEWMAN CONSTANT FORCE SQUEEGEE
has constant length since it is not sharpened; the entire tip is simply
exchanged. The Squeegee Holder also cannot be attacked by ink and
chemicals like conventional squeegees, which gradually change their flex
angle. This new squeegee has constant length, constant flex angle and
constant pressure on the ink every time you use it.
achieve faster set-up times because there is no need to adjust the
squeegee up or down due to the length of different squeegee according to
how many times the squeegee has been sharpened.
tips, in various durometers, are made of specially formulated urethane
and for many applications will last 6 months to 2 years.
sharpening of a conventional squeegee radically changes the squeegee
stiffness, flex angle, angle of attach on the ink, and the required
pressure on the ink. As the conventional squeegee becomes shorter from
sharpening, the squeegee increase its stiffness dramatically – not
directly proportionately – but changes by the 3rd power of the new
shorter length (L3).
By example: a 75 durometer squeegee with
1.2" length (past the holder) with flex approximated 3/8" with 5
lbs./inch of pressure. By sharpening the squeegee to 1.0" long, the same
5 lbs./inch of pressure causes the squeegee to stand up straighter with
only approximately 1/8" flex. To bring the flex back to 3/8", now about
30 lbs./inch of squeegee pressure is required. This will change the
ink deposit and detail. The approximate numbers vary greatly with
various screen tensions, off-contact, ink rheology, squeegee durometer
and type, print speeds, substrate variations, and aesthetic goals.
These approximate numbers and the general pictures below are provided for the purpose of conceptionalization only.
that new technology is rarely a quick fix. Improvements in print
quality and speed usually comes at the price of hard work, testing, and
an open mind to new possibilities. The printers that get better and
faster every year are constantly testing, working harder, applying
constant creativity, and more persistence than their competitors might
Data reference Equation: D = PL3 3EI
Prepared and written by Don Newman October 1997