Products - Soarnol - Application - Retort Pouches
         
   
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"Soarnol®" advances to the next stage 
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Retort Pouches
No whitening from boiling or retort treatment "Soarnol®" advances to the next stage.
As ethylene-vinyl alcohol copolymer (EVOH) resin has an OH group in its molecular structure, surface defects (particularly whitening) caused by water absorption occur during retort treatment (at 121deg C for 30 minutes). The first-generation retort "Soarnol®" developed to eliminate these surface defects had limited processability and was not suitable for long-run processing. At its Processing Technique Development Center, Nippon Gohsei worked to overcome these difficulties and at last succeeded in developing next-generation retort "Soarnol®".
With this improved grade, there are few surface defects even after retort treatment (121deg C, 30 minutes) and long-run processability has been dramatically improved over the standard grade.
Sample Applications
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Lids for processed rice diet containers and dessert containers, packaging for boiled wild vegetables, beans, and corn.
Change of Appearance after Retort Treatment
Retort condition: 121deg C-30mins (content is water)
Structure of layer: (PP/Tie/EVOH/Tie/PP)=(10/10/10/10/10)µm
Evaluation: Check the transparency of the pouch by placing behind the pouch a black sheet with the word "Clear" in white letters.
Standard "Soarnol®" shows a decrease in transparency due to whitening of the pouch, so the background letters "Clear" cannot be read. With retort "Soarnol®", however, the background letters "Clear" can be read easily.
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What is Soarnol®?
Solution
Business
Application
 
Films
Blow Molded Bottles
Extruded Tubes
Cups and Trays
Retort Pouches
Pipes
Extrusion Coatings
Coinjection
Plastic Fuel Tanks
Grade Line
Soarnol® Data
Processing
Catalogue
MSDS
Hygienic Performance
R & D
FAQ
Simulation