Clarke Joe, Lynch Colleen C. M&R Professional Screen Printing Series
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Acknowledgements
KNC Marketing
86 Irongate Dr.
Waldorf, MD 20602
Phone 301-843-1896
Fax 301-843-7649
Toll Free 800-627-8264
wwwknc.com
Kiwo USA
1929 Marvin Cir.
Seabrook, TX. 77586
Phone 281-474-9777
Fax 281-474-7325
Toll Free 800-549-6872
www.kiwo.com
Liberty Screen Print
320 Gibson Dr.
Madison, NC. 27025
Phone 336-548-6071
Fax 336-548-1866
www.libertyembroidery@aol.
com
M&R Printing Equipment
1 N 372 Main St.
Glen Ellyn, IL 60134
Phone 630-858-6101
Fax 630-858-6134
Toll Free 800-736-7431
www.mrprint.com
Murakami Screen USA
745 Monterey Pass Rd.
Monterey Park, CA 91754
Phone 323-980-0662
Fax 323-980-0659
Toll Free 800-562-3534
E-mail walt@murakami.com
www.murakamiscreen.com
NuArc Inc.
6200 W. Howard St.
Niles, IL 60714
Phone 847-967-4400
Fax 847-967-9664
Toll Free 800-962-8883
E-mail sales@nuarc.com
www.nuarc.com
Photo Research
9731 Topanga Canyon Place
Chatsworth, CA 91311-4135
Phone 818-341-5151
Fax 818-341-7070
www.photresearch.com
Pleiger Plastics Company
Crile Rd. P. O. Box 1271
Washington, PA 15301
Phone 724-228-2244
Fax 724-228-2253
Toll Free 800-753-4437
E-mail pleiger@sgi.net
www.pleiger.com
Printwear Magazine
National Business Media
2800 W. Midway Blvd.
Broomfield, CO 80020
Phone 303-469-0424
Fax 303-469-5730
E-mail pweditor@nbm
www.nbm.com/printwear
Promotions Chicago
904 Westgate St.
Addison, IL. 60101
Phone 630-628-7890
Fax 630-628-7891
E-mail promochi@core-
com.net
S.G.I.A.
10015 Main St.
Fairfax, VA. 22031
Phone 703-385-1335
Fax 703-273-0456
www.sgia.org
SaatiPrint USA (formerly
Majestech )
247 Route 100
P.O. Box 440
Somers, NY 10589
Phone 914-232-7781
Fax 914-232-4004
Toll Free 800-431-2200
E-mail majestech@
majestech.com
www.saati.com
Steve LaMonica
Photographer
2623 N. Drake Ave.
Chicago, IL 60647
Phone 773-772-6895
Fax 773-772-6896
E-mail slam35@aol.com
Stretch Devices
3401 North I Street
Philadelphia, PA 19134
Phone 215-739-3000
Fax 215-739-3011
Toll Free 800-523-3694
Target Graphics
29 W 707 North Aurora Rd.
Naperville, IL 60563
Phone 630-357-7468
Fax 630-357-8287
Toll Free 800-689-6461
E-mail targetgrpx@aol.com
Table Of Contents
Chapter One:
Screens.............................................................1.1
Chapter Two:
Stencils..............................................................2.1
Chapter Three:
Inks....................................................................3.1
Chapter Four:
Press Calibration.............................................4.1
Chapter Five:
Flashing.............................................................5.1
Chapter Six:
Costing..............................................................6.1
Terminator
Challenger II
Formula
Gauntlet II
Ultimate
Gauntlet R/S
Part Number MAN-PSPM-1.0
Chapter
1
SCREENS
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PAGE
11
. 3
Screens
Published Specifications Are Not All The Same
Whether you look at a mesh-manufacturers catalogue, its invoices, hang tags or
the coding on its products selvage, you get specifications. These are intended to
give you some level of certification that the mesh youre looking for is the mesh
you receivebut these specifications can be misleading if you do not have
enough information.
The mesh, in fact, may be far from the product you are expecting. It is important
to note that are no standards in the way mesh manufacturers offer up specifica-
tions. Some information is nominal, some theoretical, some actually measured.
You will want to know the ± tolerance of nominal and measured information,
the equipment used to take measurements, if it was measured or calculated in
metric or English measurements and if any conversions were madetheoretical
specifications should come with the calculations, for you to know how they
arrived at that information.
Specifications are based on relaxed mesh or pre-woven threads. This is not in
itself a problem, unless you try to use this information to determine angles to
avoid moiré or to predict ink mileage. When selecting mesh, this pre-woven,
relaxed-mesh information should be used as comparative information only.
However, the variance in how the specifications are given make even this a chal-
lenge. We urge you to carefully read the specification sheets. They will generally
divulge methods used to gather the data. If youre still uncertain, talk to the man-
ufacturer. It should be able to give you all the information you require. When
youve gathered sufficient information, you will need to make up your own com-
parison sheet that uses that same calculations for all the theoretic specifications,
and includes the ± tolerances of nominal or measured specifications. This is the
only way to get a fair comparison between mesh manufacturers.
There are four types of information available on screen mesh: nominal, theoreti-
cal, measured and absent. Each of these has some utility, but all are vastly
different.
Nominal means the name and has little to do with the precise dimension or
measurement. For example, a 230 mesh is seldom an exact 230; just as infre-
quently as it is the same count in the warp as in the weft. Find out the ± toler-
ance of the mesh count. This will tell you the range you can expect when order-
ing this count. And remember, this specification is for relaxednon-tensioned
mesh. Similarly, low-elongation (LE) is not as much a specification as it is a gen-
eral tendency for the mesh to develop tension with relatively lower elongation.
PAGE
11
. 4
Chapter 1
You require the meshs SS (stress-strain) curve to know this specification.
Theoretical information is that which is developed as a calculation. Many
theoretic values are calculated using a pre-woven thread diameter and a nominal
mesh count. For example, a 41-micron thread diameter is listed (and shown) as a
cylindrical cross section but, in fact, it is not a circle at all. The thread diameter
becomes oval-shaped during weaving and finishingone reason why the fabric
thickness is always less than two times the thread diameter.
Measured information is based on actual measurements taken on either the
bolt or the mill-run of fabricin its relaxed state. It is not to be taken as
absolute, for there are variances in the measurement processes; it can be an aver-
age, or other approximation. For example, some manufacturers list the measured
fabric thickness with each bolt of mesh. Fabric thickness is a composite of
thread diameter; mesh count and finishing conditions, so it is difficult to calcu-
late. While this it is by far the most informative data that can be given, here again,
you will want to be aware of the ± tolerance of this measurement.
Absent information is, obviously, the worst of all. What you dont know can
hurt you. Do you remember the twill-mesh reality of a few years ago? No one
(outside of the weavers) knew that twill mesh was being arbitrarily substituted for
plain-woven goods! Todays missing data pertains to the stress/strain relationship
of the meshits SS curve. It has been deemed by some as trivial but, as an
example, if the SS is imbalanced, you have the option to lose tension during a
press run or to end up with moiré in your halftone work. Your choice.
The real world knows that, If it aint broke (not costing you money), dont fix
it. Butfixing or not fixing asidewouldnt you agree that its critical to know if
your materials are broken? If not, you may make a decision based on wrong (or
absent) information and, in such a case, there is no predicting the results. The
truths upon which youve been relying may be based upon a lack of quality
information.
Thus, we encourage you to get live specifications whenever possible so that you
can set standards and predict your printed results. We help you begin this by iden-
tifying basic screen-mesh properties. Note that specific details are omitted in
these definitionswith reasonbut are covered later in this chapter.
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As we stated above, all such data has utility. The point is that you should not con-
fuse the name of something with its size or other physical property. Many of the