Impressions - March 2018 - 38

think.
Screen Printing Production

make.

Like this article? read more screen-printing
articles at impressionsmag.com/screenprinting.

do.

It's the
Small Things
When it comes to emulsions, paying attention
to the small details makes a big difference.
By AlAn Howe, ConTrIBuTIng wrITer

When the coated screen is not dried
completely, the excess water will
block the cross-linking action of the
stencil during the exposure process.

One type of emulsion may work for one shop, but not another.
Why? The truth is that all emulsions from quality manufacturers
work, but shops often use the wrong product for a particular
type of printing.
For example, if you are printing with water-based ink and
don't use an emulsion designed specifically for it, you may run
into trouble. It's an easy fix: Simply switch out the product for
a more suitable emulsion.
More commonly, however, it's a failure in process that leads
to error and makes it impossible for a stencil to work properly.
It's often small or overlooked tasks that when fixed or tweaked
can make all the difference.

P.38

i m p r e s s i o n s m a g . c o m MARCH 2018

Drying Screens Properly
Emulsion primarily is made up of liquid - a 40% solids emulsion is 60% water - and that moisture needs to evaporate from
the stencil before exposure.
When the coated screen is not dried completely, the excess
water can prevent the stencil from curing, causing a host of
issues like loss of durability, premature breakdown on press, poor
resolution, lack of water or solvent resistance, and pin holes.
This excess water actually will block the stencil's cross-linking
action during the exposure process. This is especially true in
diazo and dual-cure products. Only photopolymer emulsions


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Impressions - March 2018

Table of Contents for the Digital Edition of Impressions - March 2018

Impressions - March 2018
Contents
First Impressions
From the Show Director
Overheard
First Look
Scene at ISS
On Design
Mindfully Made
Breakdown: Decorating Womenswear
The Work Flow Series
Living the Print Life
Shop Talk
Embroidery Production
Screen Printing Production
Direct-To-Garment
Heat Printing
Ad Index/Online Directory
Classifieds
Impressions - March 2018 - Intro
Impressions - March 2018 - CT1
Impressions - March 2018 - CT2
Impressions - March 2018 - Impressions - March 2018
Impressions - March 2018 - Cover2
Impressions - March 2018 - 1
Impressions - March 2018 - Contents
Impressions - March 2018 - 3
Impressions - March 2018 - 4
Impressions - March 2018 - 5
Impressions - March 2018 - First Impressions
Impressions - March 2018 - 7
Impressions - March 2018 - From the Show Director
Impressions - March 2018 - 9
Impressions - March 2018 - Overheard
Impressions - March 2018 - 11
Impressions - March 2018 - 12
Impressions - March 2018 - 13
Impressions - March 2018 - First Look
Impressions - March 2018 - 15
Impressions - March 2018 - 15A
Impressions - March 2018 - 15B
Impressions - March 2018 - Scene at ISS
Impressions - March 2018 - 17
Impressions - March 2018 - 18
Impressions - March 2018 - On Design
Impressions - March 2018 - Mindfully Made
Impressions - March 2018 - 21
Impressions - March 2018 - 22
Impressions - March 2018 - 23
Impressions - March 2018 - Breakdown: Decorating Womenswear
Impressions - March 2018 - 25
Impressions - March 2018 - The Work Flow Series
Impressions - March 2018 - 27
Impressions - March 2018 - 28
Impressions - March 2018 - 29
Impressions - March 2018 - Living the Print Life
Impressions - March 2018 - 31
Impressions - March 2018 - Shop Talk
Impressions - March 2018 - 33
Impressions - March 2018 - Embroidery Production
Impressions - March 2018 - 35
Impressions - March 2018 - 36
Impressions - March 2018 - 37
Impressions - March 2018 - Screen Printing Production
Impressions - March 2018 - 39
Impressions - March 2018 - 40
Impressions - March 2018 - 41
Impressions - March 2018 - Direct-To-Garment
Impressions - March 2018 - 43
Impressions - March 2018 - 44
Impressions - March 2018 - Heat Printing
Impressions - March 2018 - 46
Impressions - March 2018 - 47
Impressions - March 2018 - Ad Index/Online Directory
Impressions - March 2018 - Classifieds
Impressions - March 2018 - 50
Impressions - March 2018 - Cover3
Impressions - March 2018 - Cover4
Impressions - March 2018 - IA1
Impressions - March 2018 - IA2
Impressions - March 2018 - IA3
Impressions - March 2018 - IA4
Impressions - March 2018 - IA5
Impressions - March 2018 - IA6
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