Learn how TOPAS COC can improve aroma barrier and product purity. TOPAS resin also delivers many other benefits - moisture protection, easy forming, high shrink, easy opening, superb twist, and more.
The chemical resistance and barrier of TOPAS COC make it an excellent replacement for Barex in many packaging applications, including nicotine patch sealants and more. See our data.
The chemical resistance and barrier of TOPAS COC make it an excellent replacement for Barex in many packaging applications, including nicotine patch sealants and more. See our data.
The classic way to increase rate in LLDPE blown films is to add 10-25% LDPE. It works, but it compromises toughness. Now there is a new option. Blend less than 5% of TOPAS COC to achieve high rates and bubble stability, with very little impact on properties.
Typical PSA dispersion can be much improved in adhesive performance by adding tackifier dispersions. Especially the tack and peel on low surface energy sustrates like untreated PE and PP is affected positively, while cohesion is still sufficient for the application. When developing tackifier dispersions we need to walk a fine line between creating a stable final adhesive dispersion and not affecting the tackifier action negatively. In the current presentation we will show the nature and the action of the tackifier, the surfactant, and the influence of surfactant packages to come to a stable, fast running PSA dispersion which has excellent adhesive performance.
The classic way to increase rate in LLDPE blown films is to add 10-25% LDPE. It works, but it compromises toughness. Now there is a new option. Blend less than 5% of TOPAS COC to achieve high rates and bubble stability, with very little impact on properties.
Typical PSA dispersion can be much improved in adhesive performance by adding tackifier dispersions. Especially the tack and peel on low surface energy sustrates like untreated PE and PP is affected positively, while cohesion is still sufficient for the application. When developing tackifier dispersions we need to walk a fine line between creating a stable final adhesive dispersion and not affecting the tackifier action negatively. In the current presentation we will show the nature and the action of the tackifier, the surfactant, and the influence of surfactant packages to come to a stable, fast running PSA dispersion which has excellent adhesive performance.
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
Elevating Tactical DDD Patterns Through Object CalisthenicsDorra BARTAGUIZ
After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Generating a custom Ruby SDK for your web service or Rails API using Smithyg2nightmarescribd
Have you ever wanted a Ruby client API to communicate with your web service? Smithy is a protocol-agnostic language for defining services and SDKs. Smithy Ruby is an implementation of Smithy that generates a Ruby SDK using a Smithy model. In this talk, we will explore Smithy and Smithy Ruby to learn how to generate custom feature-rich SDKs that can communicate with any web service, such as a Rails JSON API.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
Mission to Decommission: Importance of Decommissioning Products to Increase E...
Aroma Barrier & Low Extractables
1. 2005 PLACE
Conference September
27-29 Las Vegas,
Nevada
TOPAS Cyclic Olefin Copolymers in
Food Packaging – High Aroma Barrier
Combined with Low Extractables
Presented by:
Randy Jester
Associate Engineer
2. TOPAS® COC
A New Addition to the Ethylene Copolymer Family
Polyolefin Resin
Amorphous
Clear and Colorless
High Purity
High Moisture Barrier
Good Chemical Resistance
Easy to Process
2
3. Production Plant in Oberhausen, Germany
Production plant on stream
since Oct 2000
30 000 tons / year production capacity
Backward integrated in Norbornene
Largest Cyclic Olefin Copolymer (COC)
plant in the world
Large scale production of COC enables the production
of a cost competitive product for use in packaging
applications
3
4. COC - Synthesis and Structure
H 2C CH2 +
Readily available raw
Ethylene Cyclopentadiene Norbornene materials
Highly efficient catalyst
+ H 2C CH2 Low usage
Catalyst removed as part of
Metallocene process
Catalysis
High purity product
( )(
m
)
n
Amorphous
Crystal clear
COC
4
5. COC is Amorphous
The COC molecule is a chain of small CH2-CH2 links
randomly interspersed with large bridged ring
elements
It cannot fold up to make a regular structure, i.e., a
crystallite
NB NB NB NB
COC has no crystalline melting point, but only a glass
transition temperature, Tg , at which the polymer goes
from “glassy” to “rubbery” behavior
5
7. COC – Regulatory Status
FDA Regulation 21 CFR 177.1520 (3.9)
COC FDA Food Contact Notification (FCN #75) became effective
August 22, 2000, covers films, sheets, and articles made therein
from and molded articles for repeated use.
COC FDA Food Contact Notification (FCN #405) became
effective May 20, 2004, expands #75 to cover all applications,
including bottles.
FDA Drug Master File, DMF# 12132, established.
FDA Device Master File, MAF# 1043, established.
The monomers are listed in the EU Directive 2002/72/EG
Norbornene has a SML = 0.05 mg/kg.
COC can meet all major regulatory requirements for
food contact and medical use
7
8. 23C/50%
TOPAS® COC - Barrier Properties
10 000
Oxygen Barrier [cm3·mil/100 in2·atm·d]
1 000 LDPE EVA12 PCL
HDPE PC
BOPP Cellulose Acetate
100 PP PS PVC
® COC plasticized
TOPAS PVC hard
10 PET PA 6
PCTFE Starch
PEN
1
PAN MXD
PVdC Cellulose
0.1 EVOH
LCP
Sources: Permeability Properties of Plastics and Elastomers, Massey, 2nd Edition; various datasheets; internal data
0.01
0.01 0.1 1 10 100 1 000 10 000
Water Vapor Barrier [g·mil/100 in2·atm·d] 38C/90%
COC can extend the shelf life of products
due to its very high moisture barrier
8
9. COC in LLDPE blends can reduce gas/vapor transmission
rates by 70 – 90% at blend levels as low as 80%. This blend
level typically achieves >90% of the barrier of 100% COC.
9
10. Reduced Flavor Scalping
Scalped d-Limonene
1400.00
1195.08
1200.00 1110.76
Concentration (ng/cm2)
Purge & Trap-Thermal
1000.00
Desorpt ion-GC-M S
Analysis Dat a
800.00
600.00
400.00
200.00
0.00
100% COC 100% LLDPE
Scalping of d-Limonene by COC is similar to that of LLDPE,
indicating that the solubility of d-Limonene in COC is similar to that
of LLDPE
10
11. Factors Affecting Permeability
Permeability (normalized transmission) is the product of
diffusivity (kinetic factor) and solubility (thermodynamic
factor).
The similar levels of equilibrium scalping indicate that
solubility of d-limonene is similar in LLDPE and COC.
This information indicates that the primary factor affecting
the reduced permeability of COC is diffusivity.
11
12. Glassy vs. Rubbery State
The COC grades in this study have Tg’s in the 68-80oC
range, well above the measurement conditions. LLDPE on
the other hand has a Tg of –128oC and is in a rubbery state.
Polymers in the rubbery state typically have a higher free
volume due to a high level of molecular mobility, which
increases diffusion rates of permeants.
Polyethylene and COC are both non-polar materials and
would in general have similar solubility parameters for most
permeants.
It can be generalized that for many permeants, COC will
produce an improved barrier as compared to polyethylene
since it will typically be in the glassy state under use
conditions.
12
13. Reduced Extractables
Elevated temperature (60oC for 24 hours) extraction shows that COC has
significantly lower extractables than LLDPE including about 50% lower
oligomer levels which can produce off tastes in food
13
14. Conclusions
COC has better aroma barrier than polyethylene and can reduce
aroma/flavor loss from food when it is utilized as a barrier layer in food
packaging.
COC can also reduce the transmission of objectionable odors to
surrounding areas and should have utility in disposable food storage
bags.
Low extractables in COC reduces the possibility of generating an “off-
taste” in water or susceptible foods when used as a contact layer or just
under a seal layer in packaging.
14