Amcor Rigid Packaging (ARP) is a leading producer of rigid plastic containers for food, beverage, health care, and home/personal care markets. ARP has a substantial presence throughout the Americas and produces packaging from several plastic materials and utilizes many molding processes including injection molding, injection-stretch-blow molding, and extrusion blow molding to produce sustainable consumer packaging.
Traditionally, moisture-sensitive products like dry goods have been packaged in non-PET formats. This is due to the fact PET inherently lacks the desired level of moisture barrier needed to reach the targeted shelf-life for these product types. These products include dry goods such as coffee, baby formula, nuts, spices, powdered milk, etc. Due to the high moisture barrier requirements these products are generally packaged in containers made from metal, glass, polyolefin plastics materials [high density polyethylene (HDPE); Polypropylene (PP)], or laminate structures including foils or other high-barrier materials.
The heightened societal and consumer expectations for more eco-friendly, recyclable packaging has driven a growing interest in packaging these products in containers made from PET. This is driven by the facts: 1) PET is easily recycled and introduced back into subsequent packaging; 2) PET recycling is broadly available; 3) the manufacture of PET containers results in production of less Green House Gas (GHG) emissions vs. competing alternatives.
Unfortunately, PET lacks the desired level of moisture barrier required to meet targeted shelf life for these products. Often times, the existing package formats have moisture barrier performance of greater than 20x that of PET. Conventional solutions for improving the moisture barrier of PET containers have several limitations. Generally, these limitations are in the form of high cost, incompatibility with the PET recycle stream, or limited barrier performance.
We are seeking improved moisture barrier solutions for PET containers that meet requirements for performance, cost, and recyclability.
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