Flexible Packaging News

New Resin Makes Peelable Seals for Retortable Polypropylene Packages

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

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

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



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. 


Bringing Heavily Soiled Plates and Anilox Rollers Back to their "Like New" Condition (3-15-15)

In this informative podcast, we will talk about Sun Chemical’s new SunVisto Anilox Renew and SunVisto Power Scrub cleaning solution and how it both can effectively scour heavily soiled plates and anilox rollers as well as reduce costs for flexo printers.

Speaker: Dennis Sweet, Vice President of Rycoline, Sun Chemical
Dennis Sweet has been with Sun Chemical for 20 years. During his tenure, he has held positions of Vice President, Regional Manager in Coldset, Vice President Product Management in Heatset and Vice President Product Management in Consumables and Commercial Sheetfed. Based in Parsippany, New Jersey, Dennis has been responsible for Sun Chemical’s consumables division, Rycoline, for the last four years.

Posted 3/17/15

More Podcasts

Flexible Packaging

FP May 2015 Cover

2015 May

Check out the May 2015 issue of Flexible Packaging, featuring information on the 2015 Global Pouch Forum and much more!

Table Of Contents Subscribe

Sustainable Practices

Which of the following sustainable practices has your company adopted?
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.


Facebook logo Twitter logo  YouTube logo  linkedin_40px.png Google+

The Packaging Guide

The Packaging Guide 2015 CoverThe Packaging Guide is a comprehensive source for products & services your company needs for superior converting & printing of flexible packaging. Whether in search of specific machinery, a type of film, contract converters and packaging, find it all here on the brand new online directory at www.thepackaginguide.com.