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A Novel Approach to Clear Barrier on Packaging Films
Howard Kravitz, CEOTel: 484-367-7015, ext 302
NanoPack Inc.
•Business Materials science
•Location Wayne, PA
•Founding date 2004
•Commercial late 2008
•Employees 4 + 2*0.5
NanoPack Background
2
Materials Science Company
Singularize particles in a solubilized resin that is printed on flexible films.
Goal: barrier to maintain shelf life
3
Replaces traditional materials
•Standard materials•Polyvinylidene chloride•EVOH co-ex•PVOH•Glassy coatings•SiOx•AlOx
4
5
Packaging Structure
Structural Film
Adhesive
Sealant Film
Ink
Barrier
6
Coating Structure
30-40 layers of platelets
0.3µ
7
Goal: Good barrier resin gets better with added tortuous path.
Choice of Resin is Important
8
Good Barrier Resins
Low* loading of platelets• Barrier improved by orders of
magnitude• Excellent clarity• Destruct bond strengths
* Less than 10% platelet loading
9
1 10 100 1000 1000010
100
1000
10000CLAYS: OTR vs. Aspect Ratio
Aspect Ratio
OTR
In
dex
Substrate alone
HectoriteMontmorilonite
Vermiculite
Constant Loading
Choice of Clay is Important
11
__
_
__
__+++
+ ++
+
Choice of Vermiculite is ImportantSurface Charge is Key to Platelet Singularity
12
Choice of Vermiculite is Important
__
_
__
__+++
+ ++
+
Singularity in solution requires proprietary chemistry
= NanoPack IP
13
SEM: NanoSeal on Flexible Film
14
__
_
__
__
Aroma Barrier
__
_
__
__
Another Feature of Vermiculite
15
PrintedSide of Film
Film
CoatingTrough
Impression Roll
GravureCylinder
DoctorBlade
Dry barriercoating
Gravureapplication
Coating
film Barrier Film
film
Application of NanoSeal
Drying
16
Oxygen Barrier
Better
Good
• PVdC (“saran”)
• EVOH co-ex• PVOH0.3
µ
0.6µ
17
Note 1: %RH inside of package @ 0% when external RH is 0%; %RH inside of package @ 50% when external RH is ≥50%.
0% 20% 40% 60% 80% 100%0.1
1
10
NanoSeal on PET, 0.3µ
NanoSeal on BOPP, 0.3µ
EVOH: 10µ co-ex laminated to PET
PVDC, 1µ on PET
% Relative Humidity
OTR
, cc/1
00
in
²/d
ay·a
tm
Oxygen Barrier
18
0 10 20 30 40 50 60 70 80 900.01
0.1
1
10
PVOH on BOPP, 2µ
NanoSeal on BOPP, 0.3µ
% Relative Humidty
OTR
, cc/1
00
in²/
day
Note 1: %RH inside of package @ 0% when external RH is 0%; %RH inside of package @ 50% when external RH is ≥50%.
Oxygen Barrier - continued
19
Barrier – New Technology
0.001
0.01
0.1
0.1 0.05 0.002
NanoSeal™, 0.3µ Metal @ 25 Optical DensityNanoSeal™ & Metal
OTR
, cc/1
00
in
²Coated PET
NanoSeal™ Metal NanoSeal™ + Metal
20
Economics
LowCost
HighCost
• PVOH
• EVOH co-ex (purchased)
• PVdC (“saran”)
• EVOH co-ex (in-house)
Illustrative
NP coated film
21
Economics
LowCost
HighCost
• PVOH
• EVOH co-ex (purchased)
• PVdC (“saran”)
• EVOH co-ex (in-house)
Illustrative
PurchaseNanoSeal™ coating
22
Environmentally Friendly
• Less material used
• No toxic chlorine
• Biodegradable
23
Other Advantages
• Clarity (non-yellowing)• Scratch resistance• Flexibility• Oil resistance• Solvent resistance
24
Commercial Status
25
26
New Developments
•PLA•PE
27
New Developments – anticipated
•Moisture barrier• Incorporation into adhesives
28
Thank you
29