US2005224172A1PendingUtilityA1

Laminate antioxidant film

55
Individually held — no corporate assignee on recordPriority: Jun 22, 2000Filed: Jun 9, 2005Published: Oct 13, 2005
Est. expiryJun 22, 2020(expired)· nominal 20-yr term from priority
Inventors:James S. Bradley
B65D 2565/387Y10T428/31786Y10T428/31504B32B 27/08B32B 37/12Y10T428/1334B65D 2565/388B32B 2553/00Y10T428/1379Y10T428/1359B32B 7/12Y02W30/80Y10T428/31551Y10T428/31855Y10T428/1321B65D 81/28
55
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Claims

Abstract

A packaging laminate includes an impermeable outer layer, an inner layer having a gas transmission rate greater than that of the outer layer, and an adhesive layer therebetween. The adhesive layer includes an adhesive resin, a curing agent and a butylated phenolic antioxidant. Migration of the butylated phenolic antioxidant through the laminate inner layer exposes a product stored in contact therewith to an antioxidant thereby decreasing the rate of product oxidation.

Claims

exact text as granted — not AI-modified
1 . A process of forming a packaging laminate comprising the step of sandwiching a solventless adhesive material comprising an adhesive resin, a curing agent, and a butylated phenolic antioxidant between two thin polymeric film substrates.  
   
   
       2 . The process of  claim 1  wherein said adhesive material further comprises an additive selected from the group consisting of: a plasticizer, a filler, and a pigment.  
   
   
       3 . The process of  claim 1  wherein sandwiching occurs at a temperature less than 400° F.  
   
   
       4 . The process of  claim 3  wherein the temperature is between 50° and 200° F.  
   
   
       5 . An adhesive mixture comprising: an adhesive resin, a curing agent and a butylated phenolic antioxidant.

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