Graph Expo 2014

Global Pouch West - Register by November 17th and save $200! December 3-4, Garden Grove, CA
Go to www.globalpouchwest.com to register today.

Flexible Packaging News

New Resin Makes Peelable Seals for Retortable Polypropylene Packages

March 2, 2011
/ Print / Reprints /
ShareMore
/ Text Size+

A new lidding solution from DuPont Packaging & Industrial Polymers provides an easy and effective way to make peelable lids for retortable polypropylene (PP) packages. DuPont Appeel 22D843 lidding sealant resin is pellet-blended with a polypropylene sealant resin and then processed to make a lidding structure or sealant layer in conventional extrusion or coextrusion equipment designed for polyolefin resins.

“The new Appeel grade gives converters an easy way to tailor peel force and achieve consistent sealing and peeling performance with a preformulated masterbatch,” says Terry Kendig, senior technical development specialist of DuPont Packaging & Industrial Polymers. 

Appeel 22D843 is typically blended with PP at addition rates of 20 to 40 percent by weight.  The proportion of Appeel in the blend determines peel strength.  Lower addition rates result in higher peel force and vice versa. 

Either homopolymer or copolymer PPs can be used.  The choice of PP depends on the melt index requirements of the extrusion process and performance needs.  Copolymer blends have a lower seal initiation temperature while homopolymer blends may withstand higher retort temperatures.  Appeel 22D843 is a PP-modified ethylene acrylate resin.

Blends of PP and the new Appeel grade can withstand sterilization conditions from 121°C for 20 minutes up to 134°C for 6 minutes with adequate counter pressure, depending on the type of PP employed.

DuPont Packaging & Industrial Polymers
(302) 996-7911
www.dupont.com/

Did you enjoy this article? Click here to subscribe to Flexible Packaging Magazine. 

You must login or register in order to post a comment.

Multimedia

Videos

Image Galleries

Consumer Perceptions of Vacuum-packaged Meat

In June, Sealed Air and NCBA held a virtual press conference revealing research around consumer perceptions on vacuum-packaged meat. The infographic shown highlights additional findings from the two organizations’ research, including interesting statistics around how packaging can influence buying behaviors. 

Podcasts

Emerging Technology in Barrier Coatings

In this podcast, we will talk with Bob O’Boyle at Sun Chemical to learn what barrier coatings are and how they benefit the customers of package printers. 

Speaker: Robert O’Boyle is a product manager of coatings at Sun Chemical. O’Boyle has been in the industry for 35 years and has been instrumental in developing and advanc­ing nanoparticle technology. Sun Chemical offers unique high oxygen barrier coatings – SunBar – which focus on eliminating a laminated structure.

More Podcasts

Flexible Packaging

FP October 2014 cover

2014 October

Check out the October 2014 issue of Flexible Packaging, with features on flexible films, portable packages, and much more!

Table Of Contents Subscribe

Food Waste

What do you think of the recent law passed in Seattle that regulates the amount of food waste residents and businesses have in their trash?
View Results Poll Archive

The Flexible Packaging Store

M:\General Shared\__AEC Store Katie Z\AEC Store\Images\flexible packaging\new site\hnbk-of-paper-paperboard-pa.gif
Handbook of Paper and Paperboard Packaging Technology, 2nd Edition

The definitive industry reference on the paper and paperboard packaging sector.

More Products

Clear Seas Research

Clear Seas ResearchWith access to over one million professionals and more than 60 industry-specific publications, Clear Seas Research offers relevant insights from those who know your industry best. Let us customize a market research solution that exceeds your marketing goals.

STAY CONNECTED

Facebook logo Twitter logo  YouTube logo  linkedin_40px.png Google+

Suppliers Guide

FP 2014 supplier's guideWant to purchase a print copy of the the Suppliers Guide? Visit the AEC Store for easy ordering.