Packaging Options With COC/PE Blends
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Transcript of Packaging Options With COC/PE Blends
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SPE Polyolefins 2007 Conference
February 25 – 28, 2007; updated 2013
Cyclic Olefin Copolymer:
A High Performance Modifier for
Conventional Polyolefins
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Polyolefin Resin
Amorphous
Clear and Colorless
High Purity
High Moisture Barrier
Good Chemical Resistance
Easy to Process
Easy to Reprocess
TOPAS® Cyclic Olefin Copolymer (COC) A New Addition to the Ethylene Copolymer Family
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TOPAS® COC - Film & Packaging Examples
TOPAS® COC enhances a broad range
of film and packaging applications
COC
Soft Shrink Film
Pouches
Optical Film
Shrink Sleeves
Forming Webs
Blister Packaging
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TOPAS® COC - Enhancement in Value
Customized Performance
Barrier
WVTR = extended shelf life
Special barrier (e.g. acetic acid, alcohol, aroma, flavor, acids,
bases, peroxide; moderate gas barrier)
Mechanical Properties
Added stiffness = downgauging of softer polymers
Improved thermoforming
Higher temperature resistance
Controlled tear
Superior twist retention
Curl reduction
Seal Properties
Improved seal strength, hot tack and temperature window
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TOPAS® COC can extend the shelf life of products
due to its very high moisture barrier
TOPAS® COC - Barrier Properties
0.01
0.1
1
10
100
1 000
10 000
0.01 0.1 1 10 100 1 000 10 000
Water Vapor Barrier [g·mil/100 in2·atm·d] 38C/90%
EVOH
Cellulose Acetate
TOPAS® COC
PCL
PA 6 Starch
PS
PC
Cellulose PAN
PET
PVC hard
PVC
plasticized
LCP
PVdC
PEN
BOPP HDPE
PP
LDPE EVA12
Oxyg
en
Barr
ier
[cm
3·m
il/1
00 i
n2·a
tm·d
] 2
3C
/50%
PCTFE
MXD
Sources: Permeability Properties of Plastics and Elastomers, Massey, 2nd Edition; various datasheets; internal data
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Materials: LLDPE Dow 2035, Plastomer ExxonMobil 3125, HDPE ExxonMobil HDZ222, TOPAS 8007
Barrier Properties in PE/COC Blends
0
1
2
3
4
5
6
7
0 20 40 60 80 100
[Weight %] COC in Blend
Wa
ter
Pe
rme
ati
on
[g
10
0µ
m/m
² 2
4h
r]
38°C & 90% RH
Plastomer
LLDPE
HDPE
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0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1R
ela
tive T
ran
sm
issio
n R
ate
Oxygen* Water**
d-limonene***
* 23C & 50% RH
** 38C & 90% RH
*** 23C, MOCON technique, saturated vapor of “paste”
LLDPE 80% TOPAS 8007 / 20% LLDPE
Onion*** Sardine***
Aroma/Odor Barrier
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TOPAS® COC - Laminates / Pouches for Food and Non-food Applications
Description:
Multi-layer pouches with PE/COC sealant
layer
Value Proposition:
Improved stiffness
Potential for downgauging
Excellent clarity & gloss
Controlled easy tear properties
Grade:
8007F-400
Customer:
Not disclosed
LLDPE/COC 20% COC => 4x modulus
0
200
400
600
800
0 5 10 15 20 25
E-M
od
ul (
MP
a)
Weight % 78C Tg COC
m-LLDPE
Plastomer
LLDPE
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136°C Tg grade dramatically increases modulus of PE
at hot fill temperature
0
50
100
150
200
250
70C
75C
80C
85C
2%
Secan
t M
od
ulu
s in
MP
a
Modulus as a Function of Temperature
2.7 mil Three-Layer Blown Film (COC + PE Blend / PE / COC + PE Blend)
10% 8007
(78°C Tg)
10% 6013
(136oC Tg)
8% 8007
3% 6013
LLDPE
(Dowlex 2045)
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100% HDPE
10% TOPAS 5013 / 90% HDPE
20% TOPAS 5013 / 80% HDPE
10% TOPAS 6013 / 90% HDPE
20% TOPAS 6013 / 80% HDPE
10% TOPAS 6015 / 90% HDPE
20% TOPAS 6015 / 80% HDPE
Addition of high Tg COC (e.g. 5013 & 6013) extends
temperature resistance of HDPE/COC blends
HDPE/COC Blends: G-Modulus
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HDPE/COC Blends: G-Modulus
1
10
100
1000
10000
-40 0 40 80 120 160 200 240 Temperature ( °C)
Sh
ea
r M
od
ulu
s
(N)/
mm
2
6017
6015
6013
8007
High modulus for temperature resistant applications
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Formed 4.7-mil mono COC vs. 6-mil Polyolefin coex
0
20
40
60
80
100
120
140
160
Cost ($/MSI)
Gauge (mil)
Haze (%)
Gloss (60o)
MD Modulus (ksi)
TD Modulus (ksi)
MD Tensile Strength (ksi)
TD Tensile Strength (ksi)
Retained Volume (%)
Formed Cavity Gauge Variation (%)
Formed Cavity Puncture (lb)
Formed Corner Puncture (lb)
PP/LLDPE+LDPE/PP h-LLDPE w/15% 9506 & 6013
COC
Thermoforming: Amorphous is best
TOPAS® COC forms much better than other polyolefins
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PE
PE/COC blend
PE
Description:
Forming web for medical device packaging with
PE/COC blends
Value Proposition:
Good forming properties
Excellent dimensional stability
Excellent stiffness
Cost-effective solution: downgauging and reclaim
COC Grades:
68oC Tg and 78oC Tg
Customer:
Not disclosed
TOPAS® COC - Medical Device Packaging
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Description: Zipper (Pactiv Hefty® Slide-Rite®) Value Proposition: Curl and Shrinkage control (no camber) Easy open / close (COF) Mechanical strength and stiffness Moisture barrier COC Grades:
6013F-04, 8007F-04
Customer: Pactiv, US Others
TOPAS® COC - Zipper/Closure System for Bags
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TOPAS® COC Improves Seal Characteristics
Seal Strength is typically maintained or improved with low Tg COC addition levels up to 15% in LDPE, LLDPE and plastomers.
Hot Tack strength is increased up to 100% with the addition of 15% low Tg COC in LDPE, LLDPE, and plastomers.
Seal Initiation Temperature (SIT) can increase by 5 to 10oC with low Tg COC levels of 15% depending on the base polyolefin.
Blends using high Tg COC typically reduce sealability and can be utilized to reduce seal bar sticking in non-seal film surfaces.
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COC / Polyethylene Blend Films
LDPE, LLDPE, Plastomer, EVA
Semi-compatible blends
Increasing compatibility
EVA - HDPE - LDPE - LLDPE - Plastomer
Depending on...
crystallinity (density, refractive index)
side chains, viscosity
Typical blend mixes
5 - 30% PE in COC
Typical Film Structures (blends)
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Glass Clear, Transparent
Exceptional Purity
Low Water Transmission Rate (WVTR)
High Stiffness, Deadfold
Resistant to Alcohols, Acids, Bases, Polar Solvents
Broad Regulatory Clearances
Halogen-free
Glass transition temperatures, °C(°F)
70 - 180 (154 – 356)
Modulus of elasticity, N/mm2 (kpsi)
2600 – 3200 (380 – 460)
Tensile strength, N/mm2 (kpsi)
66 (10)
Density, g/cm3
1.02
Water uptake, %
< 0.01
WVTR, g × mm/m2 (mil/100 in2) × day
0.02 - 0.04 (0.05 – 0.10)
TOPAS® COC – Basic Properties
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TOPAS® COC is the only cyclic olefin resin meeting all major global
regulatory requirements for food contact and medical use
Contact us for compliance of specific grades!
TOPAS® COC – Regulatory Status - Food & Medical
USA
FDA regulation 21 CFR § 177.1520 “Olefin polymers” (3.9)
FDA Food Contact Notification (FCN #405), effective 2004, expanded prior FCN to cover
all applications including bottles (See http://www.accessdata.fda.gov/scripts/fcn/fcnnavigation.cfm?rpt=fcslisting.)
FDA FCN #1104, effective Sep 2011, covers new E-140 grade for many conditions of use
FDA Drug Master File -- DMF #12132
FDA Device Master File -- MAF #1043
Europe
Monomers and additives are listed in the EU Plastics Regulation 10/2011 (PIM - Plastic
Implementation Measure)
Norbornene has a Specific Migration Limit (SML) of 0.05 mg/kg
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Summary
As a polyolefin, TOPAS® COC has good compatibility with most polyolefins.
Addition of relatively low levels of COC can dramatically increase the modulus of
polyolefins and the modulus enhancement is maintained up to the HDT of the
COC.
COC addition can be used to improve the barrier of polyolefins or to “fine tune” a
target transmission.
COC improves seal characteristics of many polyolefins.
COC enhances thermoforming and reduces curl.