THERE YOU HAVE IT.

ETHYLENE VINYL ACETATE (EVA)
BASED HOT-MELT ADHESIVES
HAVE BEEN THE WORKHORSE OF
PACKAGING ADHESIVES FOR THE
PAST 40 YEARS.
In 2013, the
packaging
industry used
an excess
of 400 MM
pounds of
EVA ...
WHICH ROUGHLY CORRESPONDS TO MORE THAN 1
BILLION POUNDS OF HMA!
HOWEVER, THE INTRODUCTION OF AFFINITY GA POLYOLEFIN POLYMERS (POP’s) IN THE LATE
1990’S LED TO THE LAUNCH OF A NEW FAMILY OF HMA’S, WHICH QUICKLY PROVED TO BE
SUPERIOR TO EVA-BASED HMA’S.
These high flow AFFINITY-based HMA’s are now the premier hot-melts in the industry today. They combine
impressive performance characteristics with unparalleled and customer demonstrated cost savings.
WHAT MAKES
AFFINITY GA
DIFFERENT?
A METALLOCENE IS NOT AN
ADHESIVE. IT IS A CATALYST.
Let’s start with chemistry. AFFINITY-based
HMA’s are alternatively called METALLOCENE
Adhesives. But the term METALLOCENE is
often misunderstood in daily adhesive
discussion. HERE’S THE TRUTH
Is used as a catalyst in the actual
creation of hot-melt polymers!
In which the
metallocene
compound ..
(DON’T WORRY, THE CHEMISTRY PART IS OVER)
But with a better understanding of what a metallocene actually is, we can truly understand how they make
AFFINITY-based HMA’s superior to any product in the market!
METALLOCENE catalysts have demonstrated incredibly high productivity which
translates to lower catalyst cost and an overall cleaner polymer.
A cleaner polymer means also gives the metallocene polymer a
lower molecular weight. This reduces smoke, char, and other
process difficulties associated with traditional
EVA formulations.
Above all else, metallocenes allow
for more flexible HMA solutions
for use in almost any
application.
HOW DOES THIS AFFECT MY LINE?
In every way possible! AFFINITY-based HMA’s provide performance benefits that echo through an entire application line such as:
INCREASED MILEAGE
CLEAN MACHINING
50 60 7
0
40
0
100
90
20 30
80
10
1 0 0 0 0 0 0
110
MPH
Reduced adhesive usage &
can lower adhesive costs as
much as 15-30%, depending
on the application
Allows for no plugged filters
or nozzles, reduced downtime,
and lost production
IMPROVED THERMAL STABILITY
NO STRINGING/SPIDER WEBBING
Reduced adhesive usage &
can lower adhesive costs as
much as 15-30%, depending
on the application
Excellent control of viscosity
resulting in precise control of
bead size and bead placement
WIDE SERVICE TEMPERATURE RANGE
VIRTUALLY ODOR FREE
180 °F
-40 °F
Final bonds resist extreme
heat and cold, reducing waste,
product returns, and replacement costs
Allows for enhanced
workplace conditions
WHERE CAN I RUN AFFINITY-based HMA’s?
AFFINITY-based HMA’s are designed to be run in almost any hot-melt and hot-melt
pressure sensitive application!
BOTTLE LABELING
A. Roll Feed
B. Magazine Feed
CASE AND CARTON SEALING
A. Folding Carton Sealing
B. Corrugated Container Closure
C. Tray Forming
D. Pallet Stabilization
MULTI-WALL/SPECIALTY BAG
A. Film Lamination
C. Pinch Bottom
E. Spot Paste
G. Valve Assembly
GENERAL PACKAGING
B. Vacuum Bags
D. Security Bags
F. Wax Bags
H. Plastic Bags
NONWOVEN HYGIENICS
A. Diaper Construction
B. Core Stabilization
BUT DON’T JUST TAKE OUR WORD FOR IT.
THE PROOF IS IN THE DATA.
DOW Chemical has conducted extensive testing between their AFFINITY-based HMA’s and traditional EVA formulations to further reinforce AFFINITY’s superiority.
The rupture of paper cloth fibers during the separation of the adhesive from
the substrate
FIBER TEAR
PERCENT FIBER TEAR
100
-40ºF
PERCENT
FIBER TEAR-40°C
of EVA HMAs-1v
84% 84% 84%
80% 80% 80%
80% 80% 80%
100
90 -40°C
0ºF
PERCENT
FIBER TEAR
of EVA HMAs-18°C
vs. AFFINITY H4
75% 75% 75%
100
90 -40°C
80 -18°C
39ºF
4°C at VARIOU
49
PERCENT
TEAR
of EVA HMAs
vs. AFFINITY HMAs
71% 71%
71% FIBER
68% 68% 68%
90
80
70
80
70
Fiber Tear (%)
70
Fiber Tear (%)
80 -18°C
Fiber Tear (%)
90 -40°C
60
60
50
70
Fiber Tear (%)
60% 60%
58% 60%
58% 58% 100
Fiber Tear (%)
100
90 -40°C
80 -18°C
70 HMAs
120ºF
4°C at VARIOUS
49°C
PERCENT
FIBER TEAR
of EVA HMAs
vs. AFFINITY
TEMP.
4°C
60
50
60 49°C
140ºF
60°C
50
40
40
30
40
30
20
40
30
20
10
40
30
20
10
10% 10% 10%
30
20
1%
60
50
AFFINITY
AFFINITY
GA
AFFINITY
HMA
GA 20
HMA
GA HMA
50
AFFINITY GA HMA
5% 5%
5% 5%
5% 5%
1% 1% 10
10
1%HMA
1%
1% 1%
1%
0% 1%
0%
AFFINITY GA
EVA 1EVA 1EVAAFFINITY
1
GA HMA
EVA 2EVA 2EVA 2
0%
EVA 1
10
GA HMAweight which allows for incredible
EVA 1 fiber
Base
AFFINITY-based HMA’s have low crystallinity and veryAFFINITY
low molecular
tearPolymer
percentage results as indicted above.
AFFINITY GA HMA
EVA 1
Base Polymer
EVA 2
Base Polymer
The temperature to which an adhesive or an assembly is
subjected
to cureVS.the
SERVICE TEMPERATURE RANGE
OF AFFINITY
EVAadhesive
POLYMER
SERVICE TEMPERATURE
AFFINITY GA POP
AFFINITY GA POP
EVA
EVA
HMA formulated with AFFINITY GA POP
HMA formulated with AFFINITY GA POP (-40 °F to 163 °F)
HMA formulated with EVA
HMA formulated with EVA (37 °F to 147 °F)
-40°
-40º
-29°
-20º
-18°
0º
-7°
20º
4°
40º
16°
60º
27°
80º
38°
100º
49°
120º
60°
140º
71°
160º
82°
180º
Service
Temperature
Service
Temperature
(ºF) (°C)
AFFINITY-based HMA’s exhibit exceptional performance at both ends of the temperature scale, due to the very low
glass transition temperatures of the polymers and the heat resistance offered by optimum tackifiers
COLOR CHANGE
AFFINITY HMA’s produce exceptionally clear and virtually odor-free solutions. Below is
a comparison of the color stability of HMA’s formulated at 350°F for 168 hours.
AFFINITY GA HOT-MELT
HOURS
0
24
48
72
60
96
168
TRADITIONAL EVA HOT-MELT
Compared to traditional EVA formulations, AFFINITY HMA initial and aged color is substantially better. These properties
make AFFINITY HMA’s a preferred product when improvement in cosmetic aspects of the packaged goods are needed.
THERE YOU HAVE IT.
DOW AFFINITY GA-Based Hot-Melt Adhesives deliver
innovation that will help you create truly differentiated
products and end-use applications.
AJ Adhesives is a premier industrial adhesive supplier providing adhesive solutions to a diverse range of industry
sectors. Their inventory of DOW products provide end users with the latest in adhesive technology. DOW’s high-flow
adhesives combine performance with customer-demonstrated cost savings and offer process-ability, performance,
cosmetic appearance, and most importantly, they help end-users save money.
Base P
EV

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